Mercurial > ~dholland > hg > ag > index.cgi
annotate tests/agcl/oldagsrc/dsl.syn @ 22:5581ef01f993
Regen all the AG output.
This also fixes the line number output in the tools
(cgbigen/helpgen/help2html), apparently because those files weren't
regenerated last go.
author | David A. Holland |
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date | Mon, 13 Jun 2022 00:06:39 -0400 |
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1 { // C Prologue |
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2 /* |
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3 AnaGram, a System for Syntax Directed Programming |
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4 |
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5 A Dos Script Language |
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6 |
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7 Copyright (c) 1993, Parsifal Software. |
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8 All Rights Reserved. |
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9 |
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10 */ |
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11 |
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12 |
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13 #include "stack.h" |
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14 #include "charsink.h" |
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15 #include "strdict.h" |
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16 #include "array.h" |
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17 #include "symbol.h" |
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18 #include "query.h" |
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19 #include <conio.h> |
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20 |
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21 |
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22 // Define stacks for temporary storage |
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23 |
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24 stack <action_pointer> as(25); // Stack actions |
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25 stack <int> is(100); // Stack string indices |
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26 stack <char *> ps(1000,20); // Stack parameter strings |
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27 stack <query_item> qs(23); // Stack query items |
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28 |
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29 |
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30 // Define data structures for symbol table |
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31 |
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32 #define N_STRINGS 2000 |
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33 |
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34 string_accumulator sa(64000U,500); |
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35 string_dictionary sd(N_STRINGS); |
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36 array <symbol_table_entry> st(N_STRINGS); |
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37 |
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38 } // End of C Prologue |
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39 |
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40 |
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41 // Character Set Definitions |
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42 |
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43 digit = '0-9' |
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44 eof = 0 + ^Z |
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45 letter = 'a-z' + 'A-Z' + '_' |
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46 not double quote = ~eof - ('"' + '\\' + '\n') |
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47 not eol = ~(eof + '\n') |
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48 not paren = ~(eof + '(' + ')') |
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49 not single quote = ~eof - ('\'' + '\\' + '\n') |
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50 operator = '#' + '=' + '<' + '>' + '|' |
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51 punctuation = '(' + ')' + '{' + '}' + '[' + ']' + '"' + '\n' |
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52 text char = ~(eof + operator + white + punctuation + '@') |
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53 white = ' ' + '\t' + '\v' + '\f' + '\r' |
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54 |
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55 |
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56 // Configuration Section |
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57 |
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58 [ |
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59 ~allow macros |
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60 line numbers |
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61 pointer input |
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62 context type = action_pointer |
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63 test file mask = "*.dsl" |
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64 distinguish keywords {letter + digit} |
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65 sticky {name} |
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66 far tables |
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67 |
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68 disregard ws |
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69 lexeme {literal, integer constant, string literal, paren string, |
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70 character constant, eol, literals} |
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71 |
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72 subgrammar {word, literals} |
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73 parser file name = "#.cpp" |
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74 ] |
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75 |
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76 |
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77 // White Space Definitions |
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78 |
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79 ws |
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80 -> white | comment |
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81 |
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82 comment |
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83 -> comment head, "*/" |
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84 |
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85 comment head |
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86 -> "/*" |
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87 -> comment head, ~eof |
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88 |
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89 // Comment out one of the following two productions to determine whether |
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90 // comments nest or not |
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91 |
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92 comment head |
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93 -> comment head, comment // comments nest |
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94 |
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95 /* |
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96 comment |
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97 -> comment head, comment // comments do not nest |
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98 */ |
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99 |
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100 eol |
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101 -> '\n' |
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102 -> "//", not eol?..., '\n' // C++ style comments |
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103 |
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104 |
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105 |
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106 // Script File Description |
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107 |
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108 script file $ |
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109 -> [execution block | declaration | eol]..., eof |
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110 |
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111 |
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112 // Dos Command and Parameter Recognition |
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113 |
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114 word |
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115 -> paren string |
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116 -> string literal |
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117 -> literal =lookup(); |
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118 -> word, '[', !sa << '[';, |
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119 parameter string, ']' =concat(sa) << ']', lookup(); |
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120 |
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121 string |
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122 -> word |
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123 -> string, '#', word =concat(sa); |
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124 |
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125 parameter string |
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126 -> param word |
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127 -> parameter string, '#', |
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128 param word =concat(sa); |
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129 |
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130 literal |
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131 -> text char + '@':c =++sa << c; |
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132 -> literal, text char:c =sa << c; |
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133 |
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134 param word |
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135 -> word |
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136 -> action text =action_string(); |
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137 |
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138 |
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139 // Gather, but do not execute, the text of an action block |
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140 |
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141 action text |
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142 -> action text head, '}' |
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143 |
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144 action text head |
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145 -> '{' =as << CONTEXT; |
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146 -> action text head, word =--sa; |
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147 -> action text head, eol |
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148 -> action text head, action text ={action_pointer a; as >> a;} |
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149 -> action text head, operator |
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150 |
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151 |
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152 /***** |
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153 |
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154 Parenthesized string |
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155 |
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156 May contain any characters inside balanced parentheses. If parentheses |
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157 are included, they must balance. Outer parentheses are stripped before |
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158 use. |
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159 |
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160 *****/ |
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161 |
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162 paren string |
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163 -> paren string chars, ')' |
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164 |
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165 paren string chars |
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166 -> '(' =++sa; |
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167 -> paren string chars, paren string char |
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168 |
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169 paren string char |
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170 -> not paren:c =sa << c; |
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171 -> !sa << '(';, paren string chars, ')' =concat(sa) << ')'; |
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172 |
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173 |
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174 /***** |
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175 |
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176 String Literal |
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177 |
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178 Follows the same rules as for string literals in C and C++ |
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179 |
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180 *****/ |
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181 |
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182 string literal |
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183 -> string chars, '"' |
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184 |
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185 string chars |
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186 -> '"' =++sa; |
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187 -> string chars, string char |
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188 |
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189 string char |
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190 -> not double quote:c =sa << c; |
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191 -> escape sequence:c =sa << c; |
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192 |
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193 (int) escape sequence |
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194 -> "\\a" ='\a'; |
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195 -> "\\b" ='\b'; |
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196 -> "\\f" ='\f'; |
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197 -> "\\n" ='\n'; |
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198 -> "\\r" ='\r'; |
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199 -> "\\t" ='\t'; |
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200 -> "\\v" ='\v'; |
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201 -> "\\\\" ='\\'; |
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202 -> "\\?" = '\?'; |
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203 -> "\\'" ='\''; |
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204 -> "\\\"" ='"'; |
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205 -> octal escape |
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206 -> hex escape |
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207 |
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208 (int) octal escape |
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209 -> one octal | two octal | three octal |
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210 |
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211 (int) one octal |
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212 -> '\\', '0-7':d =d-'0'; |
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213 |
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214 (int) two octal |
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215 -> one octal:n, '0-7':d =8*n + d-'0'; |
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216 |
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217 (int) three octal |
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218 -> two octal:n, '0-7':d =8*n + d-'0'; |
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219 |
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220 (int) hex escape |
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221 -> "\\x", hex number:n =(int) n; |
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222 |
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223 (long) hex number |
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224 -> hex digit |
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225 -> hex number:n, hex digit:d =16*n + d; |
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226 |
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227 [ |
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228 sticky {one octal, two octal, hex number} |
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229 ] |
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230 |
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231 |
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232 /***** |
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233 |
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234 Command Line Interpretation |
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235 |
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236 The identifier may be the name of a DOS command, internal or external, |
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237 a path name of an arbitrary executable, or an internal commmand of the |
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238 scripting language. It may appear literally, or may be the result of |
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239 string concatenation and substitution. |
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240 |
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241 command is used in the program logic section, below. |
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242 |
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243 *****/ |
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244 |
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245 command |
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246 -> identifier, parameters? =exec(); |
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247 -> identifier, parameters?, |
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248 '<', parameter string =exec_redirect_in(); |
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249 -> piped command:file, '|', |
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250 identifier, parameters? =exec_pipe_in(file); |
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251 -> piped command:file, '>', |
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252 parameter string =grab_output(file); |
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253 -> piped command:file, ">>", |
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254 parameter string =append_output(file); |
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255 |
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256 (char *) piped command |
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257 -> identifier, parameters? =exec_pipe_out(); |
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258 -> identifier, parameters?, |
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259 '<', parameter string =exec_redirect_in_pipe_out(); |
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260 -> piped command:file, '|', |
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261 identifier, parameters? =exec_pipe_in_pipe_out(file); |
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262 |
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263 identifier |
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264 -> string =sa << 0, ++ps << sa; |
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265 |
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266 parameters |
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267 -> parameter string =ps << sa, sa << 0; |
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268 -> parameters, parameter string =ps << sa, sa << 0; |
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269 |
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270 |
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271 /***** |
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272 |
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273 Program logic. |
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274 |
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275 This section of syntax controls the interpretation of a sequence |
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276 of commands enclosed within braces. |
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277 |
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278 *****/ |
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279 |
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280 execution block |
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281 -> '{', eol?...,[command sequence, eol?... | if sequence, eol?...], '}' |
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282 |
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283 |
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284 /***** |
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285 |
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286 A command sequence is any sequence of statements and |
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287 if statements that ends with a statement. |
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288 |
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289 *****/ |
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290 |
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291 command sequence |
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292 -> statement |
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293 -> command sequence, eol..., statement |
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294 -> if sequence, eol..., statement |
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295 -> if sequence:pc, eol?..., |
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296 "else", action text =do_if(pc,1); |
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297 |
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298 /***** |
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299 |
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300 An if sequence is any direct sequence of statements and if statements |
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301 that ends with an if statement. The difference between an "if sequence" and |
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302 a "command sequence" is that an else clause may follow the "if sequence". |
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303 |
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304 *****/ |
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305 |
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306 (int) if sequence |
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307 -> if statement |
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308 -> if sequence, eol..., if statement:cc =cc; |
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309 -> command sequence, eol..., if statement:cc =cc; |
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310 -> if sequence:pc, eol?..., "else", eol?..., |
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311 if condition:cc, action text =do_if(pc,cc!=0); |
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312 |
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313 (int) if condition |
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314 -> "if", |
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315 '(', conditional exp:cc, ')' =(int) cc; |
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316 |
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317 (int) if statement |
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318 -> if condition:cc, action text =do_if(0,cc != 0); |
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319 |
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320 /***** |
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321 |
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322 A statement is any command that isn't an if or else statement. |
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323 The iteration on the while statement is a ruse. |
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324 |
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325 *****/ |
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326 |
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327 statement |
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328 -> command |
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329 -> assignment |
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330 -> for statement |
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331 -> declaration |
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332 -> screen description |
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333 -> while statement... |
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334 |
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335 |
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336 /***** |
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337 |
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338 Assignment statements |
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339 |
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340 There are four varieties of assignment statement depending on whether |
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341 or how the variable on the left hand side has been previously declared. |
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342 |
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343 *****/ |
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344 |
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345 assignment |
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346 -> undeclared variable:v, '=', |
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347 parameter string =assign_value(v); |
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348 -> integer variable:v, '=', |
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349 conditional exp:x, ';'? =st[v].data.integer = (int) x; |
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350 -> string variable:v, '=', |
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351 string exp, ';'? =st[v].data.text = copy(sa--); |
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352 -> string variable:v, '@', |
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353 primary exp:n, '=', |
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354 conditional exp:x, ';'? =st[v].data.text[(unsigned)n] = (int) x; |
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355 |
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356 |
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357 /***** |
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358 |
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359 Semantically determined production to determine treatment of variable |
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360 on left side of assignment statement. |
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361 |
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362 *****/ |
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363 |
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364 (unsigned) integer variable, |
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365 string variable, |
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366 undeclared variable |
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367 -> literal =check_integer(); |
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368 |
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369 |
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370 /***** |
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371 |
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372 While Statement |
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373 |
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374 The While statement loops by simply resetting the input pointer for |
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375 the parser back to the beginning of the while loop. This is the reason |
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376 for the iteration of the while statement in the production for "simple |
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377 command". |
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378 |
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379 *****/ |
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380 |
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381 while statement |
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382 -> "while", '(', conditional exp:cc, ')', |
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383 action text =do_while(cc != 0); |
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384 |
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385 |
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386 /***** |
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387 |
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388 |
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389 |
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390 For Statement |
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391 |
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392 This for statement corresponds to the for statement in the DOS batch |
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393 programming language, not the for statement in C. |
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394 |
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395 *****/ |
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396 |
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397 for statement |
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398 -> "for", name, // !++sa << '(';, |
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399 "in", parameter string, |
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400 "do"?, action text =do_for_loop(); |
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401 |
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402 |
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403 /***** |
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404 |
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405 Declaration statements |
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406 |
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407 *****/ |
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408 |
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409 declaration |
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410 -> "action", literals:n, |
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411 action text =define_action(n); |
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412 -> "int", |
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413 name, '=', conditional exp:x, ';'? =define_integer(sa--, x); |
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414 -> "string", |
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415 name, '=', string exp, ';'? =define_string(); |
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416 |
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417 (int) literals |
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418 -> literal =0; |
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419 -> literals:n, ws..., literal =n+1; |
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420 |
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421 |
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422 name |
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423 -> letter:c =++sa << c; |
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424 -> name, letter:c =sa << c; |
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425 -> name, digit:c =sa << c; |
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426 |
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427 |
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428 /***** |
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429 |
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430 Integer and String Expression Logic |
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431 |
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432 The syntax for expressions is essentially that of C, with the addition |
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433 of string comparison. The only missing operators are ++, --, and comma. |
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434 |
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435 *****/ |
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436 |
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437 |
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438 (long) conditional exp |
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439 -> logical or exp |
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440 -> logical or exp:c, '?', conditional exp:x, ':', |
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441 conditional exp:y = c != 0 ? x : y; |
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442 |
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443 (long) logical or exp |
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444 -> logical and exp |
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445 -> logical or exp:x, "||", |
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446 logical and exp:y =x != 0 || y!=0; |
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447 |
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448 (long) logical and exp |
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|
449 -> inclusive or exp |
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parents:
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|
450 -> logical and exp:x, "&&", |
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451 inclusive or exp:y =x != 0 && y !=0; |
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452 |
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parents:
diff
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|
453 (long) inclusive or exp |
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parents:
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|
454 -> exclusive or exp |
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parents:
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|
455 -> inclusive or exp:x, '|', |
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parents:
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|
456 exclusive or exp:y =x | y; |
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|
457 |
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|
458 (long) exclusive or exp |
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459 -> and exp |
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parents:
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460 -> exclusive or exp:x, '^', and exp:y =x ^ y; |
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Import AnaGram (near-)release tree into Mercurial.
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|
461 |
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462 (long) and exp |
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|
463 -> equality exp |
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parents:
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|
464 -> and exp:x, '&', equality exp:y =x & y; |
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|
465 |
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parents:
diff
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|
466 (long) equality exp |
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David A. Holland
parents:
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|
467 -> relational exp |
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David A. Holland
parents:
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468 -> equality exp:x, "==", relational exp:y =x == y; |
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469 -> equality exp:x, "!=", relational exp:y =x != y; |
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470 -> string exp, "==", string exp =string_comp() == 0; |
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471 -> string exp, "!=", string exp =string_comp() != 0; |
13d2b8934445
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|
472 |
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|
473 |
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parents:
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474 (long) relational exp |
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David A. Holland
parents:
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475 -> shift exp |
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parents:
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476 -> relational exp:x, '<', shift exp:y =x < y; |
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parents:
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477 -> relational exp:x, '>', shift exp:y =x > y; |
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478 -> relational exp:x, "<=", shift exp:y =x <= y; |
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479 -> relational exp:x, ">=", shift exp:y =x >= y; |
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480 -> string exp, '<', string exp =string_comp() < 0; |
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481 -> string exp, '>', string exp =string_comp() > 0; |
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482 -> string exp, "<=", string exp =string_comp() <= 0; |
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|
483 -> string exp, ">=", string exp =string_comp() >= 0; |
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|
484 |
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|
485 (long) shift exp |
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|
486 -> additive exp |
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parents:
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487 -> shift exp:x, "<<", additive exp:y =x << y; |
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|
488 -> shift exp:x, ">>", additive exp:y =x >> y; |
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|
489 |
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|
490 (long) additive exp |
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|
491 -> multiplicative exp |
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parents:
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|
492 -> additive exp:x, '+', |
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parents:
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|
493 multiplicative exp:y =x + y; |
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|
494 -> additive exp:x, '-', |
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|
495 multiplicative exp:y =x - y; |
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parents:
diff
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|
496 |
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parents:
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|
497 (long) multiplicative exp |
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|
498 -> unary exp |
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|
499 -> multiplicative exp:x, '*', unary exp:y =x * y; |
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|
500 -> multiplicative exp:x, '/', nonzero:y =x / y; |
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parents:
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501 -> multiplicative exp:x, '%', nonzero:y =x % y; |
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diff
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|
502 |
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|
503 (long) nonzero |
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|
504 -> unary exp: x ={ |
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|
505 assert(x); |
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506 return x; |
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|
507 } |
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|
508 |
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parents:
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|
509 (long) unary exp |
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David A. Holland
parents:
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|
510 -> primary exp |
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parents:
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|
511 -> '+', unary exp:x =x; |
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David A. Holland
parents:
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|
512 -> '-', unary exp:x =-x; |
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parents:
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|
513 -> '~', unary exp:x =~x; |
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diff
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|
514 -> '!', unary exp:x =!x; |
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parents:
diff
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|
515 |
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parents:
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|
516 (long) primary exp |
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|
517 -> integer constant |
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parents:
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|
518 -> character constant |
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|
519 -> string term,'@', primary exp:n =((unsigned char *) sa--)[(unsigned) n]; |
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parents:
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|
520 -> '#', string element ={ |
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parents:
diff
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|
521 long temp; |
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|
522 sscanf(sa--, "%ld", &temp); |
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parents:
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|
523 return temp; |
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|
524 } |
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|
525 -> numeric name |
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David A. Holland
parents:
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|
526 -> '(', conditional exp:x, ')' =x; |
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Import AnaGram (near-)release tree into Mercurial.
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parents:
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527 -> built_in name:x, built_in argument =(*st[(unsigned)x].data.func)(); |
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|
528 |
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|
529 built_in argument |
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David A. Holland
parents:
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|
530 -> '(', parameter string, ')' |
13d2b8934445
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|
531 |
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David A. Holland
parents:
diff
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|
532 (long) numeric name, |
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David A. Holland
parents:
diff
changeset
|
533 string name, |
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diff
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|
534 built_in name, |
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parents:
diff
changeset
|
535 undefined name |
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|
536 -> name =name_type(); |
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parents:
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|
537 |
13d2b8934445
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David A. Holland
parents:
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|
538 |
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|
539 /***** |
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David A. Holland
parents:
diff
changeset
|
540 |
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David A. Holland
parents:
diff
changeset
|
541 String Expressions |
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David A. Holland
parents:
diff
changeset
|
542 |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
543 *****/ |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
544 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
545 string exp |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
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|
546 -> string term |
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David A. Holland
parents:
diff
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|
547 -> string exp, '#', string term =concat(sa); |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
548 |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
549 string term |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
550 -> string element |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
551 -> string term, '@', '(', |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
552 conditional exp:first, "..", |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
553 conditional exp:last, ')' =extract((unsigned)first, (unsigned) last); |
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David A. Holland
parents:
diff
changeset
|
554 -> string term, '[', !sa << '[';, |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
555 parameter string, ']' =concat(sa) << ']', lookup(); |
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David A. Holland
parents:
diff
changeset
|
556 |
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David A. Holland
parents:
diff
changeset
|
557 string element |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
558 -> string literal |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
559 -> string name:x =++sa << st[(unsigned)x].data.text; |
13d2b8934445
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parents:
diff
changeset
|
560 -> undefined name:x =++sa << sd[(unsigned)x]; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
561 -> action text =action_string(); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
562 -> '=', primary exp:x =++sa,sa.printf("%ld",x); |
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David A. Holland
parents:
diff
changeset
|
563 -> '(', string exp, ')' |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
564 |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
565 /***** |
13d2b8934445
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David A. Holland
parents:
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changeset
|
566 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
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parents:
diff
changeset
|
567 Integer constants |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
568 |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
569 The syntax for integer constants is identical to that in C. |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
570 |
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David A. Holland
parents:
diff
changeset
|
571 *****/ |
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David A. Holland
parents:
diff
changeset
|
572 |
13d2b8934445
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parents:
diff
changeset
|
573 integer constant |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
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parents:
diff
changeset
|
574 -> hex constant |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
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|
575 -> octal constant |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
576 -> decimal constant |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
577 |
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David A. Holland
parents:
diff
changeset
|
578 (long) hex constant |
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David A. Holland
parents:
diff
changeset
|
579 -> {"0x" | "0X"} =0; |
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David A. Holland
parents:
diff
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|
580 -> hex constant:x, hex digit:d =16*x + d-'0'; |
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David A. Holland
parents:
diff
changeset
|
581 |
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David A. Holland
parents:
diff
changeset
|
582 (long) hex digit |
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David A. Holland
parents:
diff
changeset
|
583 -> '0-9' |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
584 -> 'a-f' + 'A-F':d =(d&7) + 9; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
585 |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
586 (long) octal constant |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
587 -> '0' =0; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
588 -> octal constant:n, '0-7':d =8*n + d-'0'; |
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David A. Holland
parents:
diff
changeset
|
589 |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
590 (long) decimal constant |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
591 -> '1-9':d =d-'0'; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
592 -> decimal constant:n, '0-9':d =10*n + d-'0'; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
593 |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
594 |
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595 /***** |
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596 |
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597 Character Constant |
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598 |
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599 The rules for character constant are the same as in C. |
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600 |
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601 *****/ |
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602 |
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603 (int) character constant |
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604 -> '\'', char constant element:c, '\'' =c; |
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605 |
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606 (int) char constant element |
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607 -> not single quote |
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608 -> escape sequence |
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609 |
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610 |
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611 /***** |
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612 |
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613 Screen Display |
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614 |
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615 *****/ |
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616 |
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617 screen description |
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618 -> screen items:scd, '}' =display_queries(scd); |
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619 |
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620 (screen_descriptor *) screen items |
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621 -> "screen", '{' =reset(qs), new screen_descriptor; |
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622 -> screen items, eol |
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623 -> screen items:scd, |
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624 "title", '=', |
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625 formula, eol =scd->title = formula(), scd; |
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626 -> screen items:scd, |
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627 color spec:c, eol =scd->color = c, scd; |
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628 -> screen items:scd, |
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629 "entry", color spec:c, eol =scd->entry_color = c, scd; |
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630 -> screen items:scd, |
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631 "highlight", color spec:c, eol =scd->highlight_color = c, scd; |
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632 -> screen items:scd, |
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633 "size", '=', conditional exp:w, |
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634 ',', conditional exp:h =scd->width = (unsigned)w, scd->height = (unsigned) h, scd; |
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635 -> screen items:scd, |
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636 "location", '=', conditional exp:x, |
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637 ',', conditional exp:y =scd->pos.x = (unsigned) x,scd->pos.y = (unsigned) y, scd; |
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638 -> screen items:scd, |
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639 query line:q, '}', eol =qs << *q, delete q, scd; |
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640 -> screen items:scd, |
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641 button line:q, '}', eol =qs << *q, delete q, scd; |
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642 |
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643 (int) color spec |
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644 -> "color", '=', conditional exp:fg, |
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645 ',', conditional exp:bg =COLOR((unsigned)fg,(unsigned)bg); |
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646 |
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647 |
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648 (query_item *) query line |
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649 -> "field", '{' =clear(new query_item); |
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650 -> query line, eol |
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651 -> query line:q, |
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652 "variable", '=', |
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653 literal, eol =q->id = sd << sa--, q; |
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654 -> query line:q, |
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655 "default", '=', |
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656 formula, eol =q->value = formula(), q; |
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657 -> query line:q, |
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658 "prompt", '=', |
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659 formula, eol =q->prompt = formula(), q; |
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660 -> query line:q, |
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661 "explanation", '=', |
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662 formula, eol =q->explanation = formula(),q; |
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663 |
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664 (query_item *) button line |
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665 -> "button", '{' =clear(new query_item); |
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666 -> button line, eol |
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667 -> button line:q, |
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668 "prompt", '=', formula, eol =q->prompt = formula(), q; |
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669 -> button line:q, |
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670 "explanation", '=', |
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671 formula, eol =q->explanation = formula(),q; |
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672 -> button line:q, |
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673 action text, eol =q->action = copy_action(), q; |
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674 |
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675 formula |
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676 -> formula element =reset(is) << (sd << sa--); |
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677 -> formula, '#', formula element =is << (sd << sa--); |
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678 |
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679 formula element |
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680 -> paren string |
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681 -> string literal |
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682 -> literal |
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683 -> formula element, '[', !sa << '[';, |
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684 parameter string, ']' =concat(sa) << ']'; |
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685 |
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686 { |
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687 |
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688 #include <process.h> |
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689 #include <stdlib.h> |
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690 #include <ctype.h> |
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691 #include <sys/stat.h> |
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692 #include <fcntl.h> |
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693 #include <io.h> |
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694 #include <conio.h> |
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695 #include <dir.h> |
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696 #include <dos.h> |
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697 #include <time.h> |
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698 #include "assert.h" |
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699 |
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700 #include "edit.h" |
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|
701 |
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702 |
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703 #include "screen.h" |
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704 #include "util.h" |
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705 #include "redirect.h" |
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706 |
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707 #define GET_CONTEXT CONTEXT.pointer = PCB.pointer;\ |
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708 CONTEXT.line=PCB.line;\ |
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709 CONTEXT.column = PCB.column; |
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710 |
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711 |
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712 int debug_switch = 0; |
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713 char *error_msg = NULL; |
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714 unsigned errorlevel_index; |
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715 int errorlevel; |
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716 int exitcode = 0; |
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717 int exitflag = 0; |
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718 int first_line = 1; |
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719 int first_column = 1; |
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720 unsigned stderr_index; |
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721 |
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722 void display_queries(screen_descriptor *); |
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723 |
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724 #define FIRST_LINE first_line |
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725 #define FIRST_COLUMN first_column |
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726 |
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727 |
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728 /***** |
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|
729 |
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730 Internal Functions |
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731 |
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732 *****/ |
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733 |
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734 long file_exists(void) { |
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735 FILE *f = fopen(sa--,"r"); |
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736 if (f != NULL) fclose(f); |
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737 return f != NULL; |
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738 } |
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739 |
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740 long directory_exists(void) { |
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David A. Holland
parents:
diff
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741 struct ffblk ff; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
742 int result; |
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David A. Holland
parents:
diff
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|
743 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
744 sa << "\\*.*"; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
745 result = findfirst(sa--,&ff,FA_DIREC); |
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David A. Holland
parents:
diff
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|
746 return result == 0; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
747 } |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
748 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
749 long string_length(void) { |
13d2b8934445
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David A. Holland
parents:
diff
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|
750 return size(sa--); |
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David A. Holland
parents:
diff
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|
751 } |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
752 |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
753 long get_file_length(void) { |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
754 int handle = open(sa--, O_RDONLY); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
755 long length; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
756 if (handle < 0) return 0; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
757 length = filelength(handle); |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
758 close(handle); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
759 return length; |
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David A. Holland
parents:
diff
changeset
|
760 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
761 |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
762 long disk_space(void) { |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
763 struct dfree free; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
764 int drive = toupper(*(char *)sa--) - 64; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
765 long avail; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
766 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
767 getdfree(drive, &free); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
768 avail = (long) free.df_avail * (long) free.df_bsec * (long) free.df_sclus; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
769 return avail; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
770 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
771 |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
772 long file_time(void) { |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
773 int handle = open(sa--, O_RDONLY); |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
774 struct ftime ft; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
775 struct tm t; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
776 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
777 if (handle < 0) return 0; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
778 getftime(handle, &ft); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
779 close(handle); |
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David A. Holland
parents:
diff
changeset
|
780 t.tm_year = ft.ft_year + 70; |
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David A. Holland
parents:
diff
changeset
|
781 t.tm_mon = ft.ft_month; |
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David A. Holland
parents:
diff
changeset
|
782 t.tm_mday = ft.ft_day; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
783 t.tm_hour = ft.ft_hour; |
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David A. Holland
parents:
diff
changeset
|
784 t.tm_min = ft.ft_min; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
785 t.tm_sec = ft.ft_tsec*2; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
786 return mktime(&t); |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
787 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
788 |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
789 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
790 // Support for reduction procecures |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
791 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
792 // Compare top strings on string accumulator |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
793 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
794 /* |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
795 pops top two strings from string accumulator using strcmp |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
796 and returns |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
797 -1 if first string is less than top string |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
798 0 if strings match |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
799 +1 if top string is greater than first string |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
800 */ |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
801 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
802 int string_comp(void) { |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
803 int n = size(sa); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
804 array<char> right_string(sa--, n+1); |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
805 return strcmp(sa--,right_string); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
806 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
807 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
808 /* |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
809 replace the top string on the stack, with a substring where the index |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
810 of the first character in the substring is given by "first" and the index |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
811 of the last character is given by "last" |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
812 */ |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
813 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
814 void extract(unsigned first, unsigned last) { |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
815 int n = last - first + 1; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
816 assert (last >= first); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
817 array <char> x((char *) sa-- + first, n+1); |
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David A. Holland
parents:
diff
changeset
|
818 x[n] = 0; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
819 ++sa << x; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
820 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
821 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
822 /* |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
823 Look up the top string on the accumulator stack in the string dictionary. |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
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diff
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|
824 If it has a value in the symbol table, replace it with the symbol table |
13d2b8934445
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David A. Holland
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diff
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|
825 value. If the value is numeric, convert it to integer. Otherwise, leave the |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
826 string untouched on the stack. |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
827 */ |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
828 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
829 void lookup(void) { |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
830 unsigned index = sd[sa]; |
13d2b8934445
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David A. Holland
parents:
diff
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|
831 if (index == 0) return; |
13d2b8934445
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David A. Holland
parents:
diff
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|
832 switch (st[index].type) { |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
833 case string_type: |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
834 case value_type: { |
13d2b8934445
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David A. Holland
parents:
diff
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|
835 --sa; // discard name |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
836 ++sa << st[index].data.text; // stack value |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
837 break; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
838 } |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
839 case integer_type: { |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
840 --sa; // discard name |
13d2b8934445
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David A. Holland
parents:
diff
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|
841 (++sa).printf("%ld", st[index].data.integer); // convert to ascii |
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David A. Holland
parents:
diff
changeset
|
842 break; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
843 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
844 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
845 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
846 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
847 /* |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
848 Find the data type of a symbol and change the reduction accordingly. |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
849 Return the dictionary index for strings, and the value itself for integers. |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
850 */ |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
851 |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
852 long name_type(void) { |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
853 unsigned index = sd << sa--; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
854 switch (st[index].type) { |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
855 case value_type: |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
856 case string_type: { |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
857 CHANGE_REDUCTION(string_name); |
13d2b8934445
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David A. Holland
parents:
diff
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|
858 return index; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
859 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
860 case built_in_function_type: { |
13d2b8934445
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David A. Holland
parents:
diff
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|
861 CHANGE_REDUCTION(built_in_name); |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
862 return index; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
863 } |
13d2b8934445
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David A. Holland
parents:
diff
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|
864 case undefined_type: { |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
865 CHANGE_REDUCTION(undefined_name); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
866 return index; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
867 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
868 case integer_type: return st[index].data.integer; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
869 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
870 return 0; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
871 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
872 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
873 /* |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
874 Store a string formula. A string formula is a sequence of string identifiers |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
875 the values of which are to be concatenated. The parser has accumulated the |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
876 identifiers on the integer_stack, is. The formula is terminated by a zero |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
877 entry. |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
878 */ |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
879 |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
880 int *formula(void) { |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
881 int n = size(is << 0); |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
882 int *f = new int[n]; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
883 while (n--) is >> f[n]; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
884 return f; |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
885 } |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
886 |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
changeset
|
887 /* |
13d2b8934445
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David A. Holland
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888 Make a copy of an action that has been identified in the text stream. |
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|
889 An action pointer was stacked at the beginning of the action text on the |
13d2b8934445
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diff
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|
890 action stack, as. |
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Import AnaGram (near-)release tree into Mercurial.
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|
891 */ |
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|
892 |
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|
893 action_pointer copy_action(void) { |
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David A. Holland
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|
894 action_pointer ap; |
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|
895 as >> ap; // pop action descriptor |
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David A. Holland
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|
896 unsigned length = (unsigned) (PCB.pointer - ap.pointer); |
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897 unsigned char *action = memdup(ap.pointer,length + 1); |
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David A. Holland
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|
898 action[length] = 0; |
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|
899 ap.pointer = action; |
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David A. Holland
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|
900 return ap; |
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David A. Holland
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|
901 } |
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parents:
diff
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|
902 |
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David A. Holland
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diff
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|
903 |
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diff
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|
904 // Internal Commands |
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diff
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|
905 |
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parents:
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|
906 int echo(int n_args, char *args[]) { |
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David A. Holland
parents:
diff
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|
907 int i; |
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David A. Holland
parents:
diff
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|
908 char *cs = ""; |
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parents:
diff
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|
909 for (i = 1; args[i]; i++) printf("%s%s", cs, args[i]), cs = " "; |
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David A. Holland
parents:
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|
910 printf("\n"); |
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David A. Holland
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diff
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|
911 return 0; |
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David A. Holland
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diff
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|
912 } |
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Import AnaGram (near-)release tree into Mercurial.
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diff
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|
913 |
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|
914 int pause(int n_args, char *args[]) { |
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David A. Holland
parents:
diff
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|
915 int c; |
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David A. Holland
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diff
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|
916 while (kbhit()) getch(); // Empty buffer |
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diff
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|
917 printf("Press any key to continue . . .\n"); |
13d2b8934445
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David A. Holland
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diff
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|
918 c = getch(); |
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Import AnaGram (near-)release tree into Mercurial.
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diff
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|
919 if (c == 3) exit(1); |
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diff
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|
920 return c; |
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diff
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|
921 } |
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David A. Holland
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diff
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|
922 |
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Import AnaGram (near-)release tree into Mercurial.
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|
923 int exit_script(int n_args, char *args[]) { |
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parents:
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|
924 if (n_args > 1) sscanf(args[1], "%ld", &exitcode); |
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David A. Holland
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diff
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|
925 exit(exitcode); |
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David A. Holland
parents:
diff
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|
926 return exitcode; |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
927 } |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
928 |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
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diff
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|
929 /* |
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|
930 int return_script(int n_args, char *args[]) { |
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David A. Holland
parents:
diff
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|
931 if (n_args > 1) sscanf(args[1], "%ld", &exitcode); |
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David A. Holland
parents:
diff
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|
932 PCB.exit_flag = AG_SUCCESS_CODE; |
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David A. Holland
parents:
diff
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|
933 return exitcode; |
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David A. Holland
parents:
diff
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|
934 } |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
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diff
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|
935 */ |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
936 |
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diff
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|
937 int subdirs(int n_args, char *args[]) { |
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Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
938 ffblk file_block; |
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David A. Holland
parents:
diff
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|
939 int flag; |
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David A. Holland
parents:
diff
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|
940 int length = strlen(args[1]); |
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David A. Holland
parents:
diff
changeset
|
941 array <char> name(args[1],length + 5); |
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David A. Holland
parents:
diff
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|
942 |
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David A. Holland
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diff
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|
943 strcat(name, "\\*.*"); |
13d2b8934445
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David A. Holland
parents:
diff
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|
944 for(flag = findfirst(name, &file_block, FA_DIREC); |
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David A. Holland
parents:
diff
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|
945 flag == 0; flag = findnext(&file_block)) { |
13d2b8934445
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David A. Holland
parents:
diff
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|
946 if ((file_block.ff_attrib & FA_DIREC) == 0) continue; |
13d2b8934445
Import AnaGram (near-)release tree into Mercurial.
David A. Holland
parents:
diff
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|
947 if (strcmp(file_block.ff_name, ".") == 0) continue; |
13d2b8934445
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parents:
diff
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|
948 if (strcmp(file_block.ff_name, "..") == 0) continue; |
13d2b8934445
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David A. Holland
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diff
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|
949 puts(file_block.ff_name); |
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diff
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|
950 } |
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diff
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|
951 return 0; |
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David A. Holland
parents:
diff
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|
952 } |
13d2b8934445
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David A. Holland
parents:
diff
changeset
|
953 |
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parents:
diff
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|
954 int files(int n_args, char *args[]) { |
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parents:
diff
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|
955 ffblk file_block; |
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parents:
diff
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|
956 int flag; |
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diff
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|
957 int length = strlen(args[1]); |
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|
958 array<char> name(args[1],length + 5); |
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parents:
diff
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|
959 |
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|
960 strcat(name, "\\*.*"); |
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|
961 for(flag = findfirst(name, &file_block, 0); |
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diff
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|
962 flag == 0; flag = findnext(&file_block)) { |
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diff
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|
963 puts(file_block.ff_name); |
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diff
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|
964 } |
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|
965 return 0; |
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diff
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|
966 } |
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David A. Holland
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diff
changeset
|
967 |
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diff
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|
968 |
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diff
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|
969 /***** |
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diff
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|
970 |
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diff
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|
971 Execute Command Line |
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diff
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|
972 |
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|
973 *****/ |
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|
974 |
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|
975 |
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|
976 void perform_action(action_pointer ap) { |
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|
977 dsl_pcb_type save_pcb = PCB; |
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David A. Holland
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diff
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|
978 |
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|
979 PCB.pointer = ap.pointer; |
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|
980 first_line = ap.line; |
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diff
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|
981 first_column = ap.column; |
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parents:
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|
982 dsl(); |
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|
983 exitflag = PCB.exit_flag != AG_SUCCESS_CODE; |
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diff
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|
984 PCB = save_pcb; |
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|
985 if (exitflag) PCB.exit_flag = AG_SEMANTIC_ERROR_CODE; |
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David A. Holland
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|
986 } |
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David A. Holland
parents:
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|
987 |
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|
988 void exec(void) { |
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|
989 int n = size(ps << (char *) NULL); |
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|
990 int n_args = n - 1; |
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diff
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|
991 unsigned index; |
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David A. Holland
parents:
diff
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|
992 char *cs; |
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|
993 int i; |
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|
994 |
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|
995 array <char *> args(n); |
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diff
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|
996 while (n--) ps >> args[n]; |
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David A. Holland
parents:
diff
changeset
|
997 |
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|
998 cs = args[0]; |
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|
999 for (i = 0; cs[i]; i++) cs[i] = toupper(cs[i]); |
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diff
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|
1000 if (debug_switch) { |
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parents:
diff
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|
1001 for (i = 0; args[i]; i++) fprintf(stderr, "%s ", args[i]); |
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1002 fprintf(stderr,"\nPress any key to continue\n"); |
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diff
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|
1003 while (!kbhit()); |
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diff
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|
1004 getch(); |
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David A. Holland
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diff
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|
1005 } |
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parents:
diff
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|
1006 index = sd[args[0]]; |
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parents:
diff
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|
1007 if (n_args == 1 && strlen(cs) == 2 && cs[1] == ':') { |
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David A. Holland
parents:
diff
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|
1008 errorlevel = system(args[0]); |
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diff
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|
1009 } |
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parents:
diff
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|
1010 else if ( *cs && index) switch (st[index].type) { |
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1011 case internal_type: { |
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David A. Holland
parents:
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1012 errorlevel = (*st[index].data.proc)(n_args, args); |
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|
1013 break; |
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|
1014 } |
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David A. Holland
parents:
diff
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|
1015 case dos_type: { |
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parents:
diff
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|
1016 int i; |
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|
1017 for (i = 1; args[i]; i++) args[i][-1] = ' '; |
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|
1018 errorlevel = system(args[0]); |
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diff
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|
1019 assert(errorlevel >= 0); |
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diff
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|
1020 break; |
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|
1021 } |
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|
1022 case action_type: { |
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|
1023 action_descriptor d = *st[index].data.action; |
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|
1024 stack <symbol_table_entry> old_entries(d.n_args); |
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1025 for (i = 0; i < d.n_args && args[i+1]; i++) { |
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|
1026 old_entries << st[d.args[i]]; |
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1027 st[d.args[i]].type = value_type; |
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1028 st[d.args[i]].data.text = memdup(args[i+1], 1 + strlen(args[i+1])); |
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diff
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|
1029 } |
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|
1030 perform_action(d.ap); |
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David A. Holland
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1031 for (i = d.n_args; i--;) { |
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|
1032 release(st[d.args[i]]); |
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|
1033 old_entries >> st[d.args[i]]; |
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|
1034 } |
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|
1035 } |
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|
1036 } |
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1037 else { |
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1038 errorlevel = spawnvp(P_WAIT, args[0], args); |
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|
1039 assert(errorlevel >= 0); |
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David A. Holland
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diff
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|
1040 } |
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diff
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|
1041 st[errorlevel_index].data.integer = errorlevel; |
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diff
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|
1042 while (n_args--) --sa; |
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David A. Holland
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diff
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|
1043 --ps; |
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|
1044 if (kbhit()) { |
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diff
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|
1045 int c = getch(); |
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diff
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|
1046 if (c == 3) exit(1); |
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David A. Holland
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diff
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|
1047 ungetch(c); |
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|
1048 } |
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|
1049 } |
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|
1050 |
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|
1051 void discard_temp_file(char *file_name) { |
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|
1052 unlink(file_name); // Delete file |
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|
1053 delete [] file_name; // Free storage for name |
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diff
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|
1054 } |
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|
1055 |
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|
1056 |
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|
1057 /***** |
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|
1058 |
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1059 Execute Command with piped input |
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|
1060 |
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|
1061 *****/ |
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|
1062 |
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|
1063 |
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1064 void exec_pipe_in(char *file_name) { |
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|
1065 { |
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|
1066 redirect sin(STDIN, file_name); |
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|
1067 exec(); |
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|
1068 } |
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|
1069 discard_temp_file(file_name); |
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|
1070 } |
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|
1071 |
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|
1072 |
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|
1073 /***** |
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|
1074 |
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1075 Execute Command with redirected I/O |
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|
1076 |
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|
1077 *****/ |
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|
1078 |
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|
1079 void exec_redirect_in(void) { |
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|
1080 redirect sin(STDIN, sa--); |
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|
1081 exec(); |
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|
1082 } |
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|
1083 |
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|
1084 char *exec_pipe_out(void) { |
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|
1085 redirect sout(STDOUT); |
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|
1086 exec(); |
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|
1087 return save_file(sout); |
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|
1088 } |
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|
1089 |
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1090 char *exec_pipe_in_pipe_out(char *file_name) { |
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|
1091 char *result; |
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|
1092 { |
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|
1093 redirect sin(STDIN, file_name); |
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|
1094 redirect sout(STDOUT); |
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|
1095 exec(); |
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|
1096 result = save_file(sout); |
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|
1097 } |
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|
1098 discard_temp_file(file_name); |
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|
1099 return result; |
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|
1100 } |
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|
1101 |
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|
1102 char *exec_redirect_in_pipe_out(void) { |
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1103 redirect sout(STDOUT); |
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|
1104 exec_redirect_in(); |
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|
1105 return save_file(sout); |
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|
1106 } |
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|
1107 |
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|
1108 unsigned check_integer(void) { |
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|
1109 unsigned index = sd << sa--; |
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1110 if (st[index].type == integer_type) return index; |
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|
1111 CHANGE_REDUCTION(undeclared_variable); |
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1112 if (st[index].type == string_type) CHANGE_REDUCTION(string_variable); |
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|
1113 return index; |
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|
1114 } |
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|
1115 |
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|
1116 void assign_value(unsigned index) { |
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|
1117 char *text = copy(sa--); |
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|
1118 release(st[index]); |
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|
1119 st[index].type = value_type; |
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|
1120 st[index].data.text = text; |
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diff
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|
1121 } |
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|
1122 |
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|
1123 void grab_output(char *temp_name) { |
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|
1124 unlink(sa); // delete old file |
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|
1125 rename(temp_name, sa--); // rename temp file |
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|
1126 delete [] temp_name; // discard name string |
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diff
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|
1127 } |
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diff
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|
1128 |
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|
1129 void append_output(char *temp_name) { |
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|
1130 redirect sout(STDOUT, sa--, 1); // append to file named on sa |
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|
1131 redirect sin(STDIN, temp_name); |
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|
1132 char *buf[2000]; |
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|
1133 int n; |
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|
1134 while (1) { |
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|
1135 n = read(STDIN, buf, 2000); |
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|
1136 if (n == 0) break; |
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|
1137 write(STDOUT, buf, n); |
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|
1138 } |
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|
1139 unlink(temp_name); |
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|
1140 delete [] temp_name; |
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|
1141 } |
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|
1142 |
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|
1143 void action_string(void) { |
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|
1144 action_pointer ap; |
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|
1145 as >> ap; |
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|
1146 unsigned length = (unsigned)(PCB.pointer - ap.pointer); |
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|
1147 array <unsigned char> action(ap.pointer,length + 1); |
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|
1148 action[length] = 0; |
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1149 redirect sout(STDOUT); |
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|
1150 char *result; |
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|
1151 |
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1152 ap.pointer = action; |
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|
1153 perform_action(ap); |
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|
1154 result = content(sout); |
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|
1155 ++sa << result; |
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|
1156 delete [] result; |
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|
1157 } |
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|
1158 |
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|
1159 |
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|
1160 // Program Control functions |
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|
1161 |
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1162 // If/else statement |
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|
1163 |
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|
1164 int do_if(int pc, int cc) { |
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|
1165 action_pointer ap; |
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|
1166 as >> ap; |
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|
1167 if (!pc && cc && exitflag == 0) { |
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1168 unsigned length = (unsigned) (PCB.pointer - ap.pointer); |
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1169 array<unsigned char> q(ap.pointer, length+1); |
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|
1170 q[length] = 0; |
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|
1171 ap.pointer = q; |
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|
1172 perform_action(ap); |
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|
1173 } |
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|
1174 return pc || cc; |
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|
1175 } |
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|
1176 |
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|
1177 // While statement |
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1178 |
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1179 void do_while(int cc) { |
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1180 unsigned length; |
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1181 action_pointer ap; |
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1182 as >> ap; |
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1183 if (cc == 0) return; |
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1184 length = (unsigned) (PCB.pointer - ap.pointer); |
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1185 array<unsigned char> q(ap.pointer, length+1); |
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1186 q[length] = 0; |
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1187 ap.pointer = q; |
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|
1188 perform_action(ap); |
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1189 if (exitflag) return; |
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1190 PCB.pointer = CONTEXT.pointer; |
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1191 PCB.line = CONTEXT.line; |
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1192 PCB.column = CONTEXT.column; |
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|
1193 } |
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|
1194 |
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|
1195 |
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1196 // For Statement |
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1197 // Note that this is the for statement in the DOS batch languange for, not C |
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1198 |
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1199 void do_for_loop(void) { |
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1200 int n,k; |
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1201 char *q; |
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1202 char *seps = " \t\v\f\r\n"; |
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1203 action_pointer ap; |
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|
1204 as >> ap; |
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|
1205 unsigned length = (unsigned)(PCB.pointer - ap.pointer); |
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1206 array <unsigned char> action(ap.pointer, length + 1); |
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1207 action[length] = 0; |
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|
1208 |
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1209 ap.pointer = action; |
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1210 n = size(sa); |
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1211 array<char> text(sa--, n + 1); |
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|
1212 |
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|
1213 |
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|
1214 unsigned index = sd << sa--; |
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|
1215 |
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1216 ++ps; |
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1217 for (q = strtok(text, seps); q != NULL; q = strtok(NULL,seps)) { |
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|
1218 if (*q == '(') { |
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|
1219 int k = strlen(q) - 1; |
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|
1220 assert(q[k] == ')'); |
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|
1221 q[k] = 0; |
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|
1222 q++; |
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|
1223 } |
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|
1224 else if (*q == '"') { |
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|
1225 int k = strlen(q) - 1; |
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|
1226 assert(q[k] == '"'); |
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|
1227 q[k] = 0; |
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|
1228 q++; |
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|
1229 } |
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|
1230 ps << q; |
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|
1231 } |
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|
1232 k = n = size(ps); |
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|
1233 array<char *> args(n); |
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|
1234 while (k--) ps >> args[k]; |
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|
1235 --ps; |
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|
1236 symbol_table_entry save_table_entry = st[index]; |
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|
1237 st[index].type = value_type; |
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|
1238 |
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|
1239 for (k = 0; k < n && exitflag == 0; k++) { |
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|
1240 st[index].data.text = args[k]; |
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|
1241 perform_action(ap); |
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|
1242 } |
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|
1243 st[index] = save_table_entry; |
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|
1244 } |
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|
1245 |
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|
1246 void invoke_script(void) { |
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|
1247 int handle = open(sa, O_TEXT | O_RDONLY); |
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|
1248 long size; |
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|
1249 unsigned n; |
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|
1250 action_pointer ap; |
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|
1251 |
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|
1252 if (handle < 0) { |
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|
1253 fprintf(stderr,"Cannot open %s\n", (char *) sa--); |
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|
1254 exit(1); |
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|
1255 } |
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|
1256 --sa; |
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|
1257 size = filelength(handle); |
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|
1258 assert(size < 65536L); |
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|
1259 array <unsigned char> data((unsigned) size+1); |
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|
1260 n = (unsigned) read(handle,data,(unsigned) size); |
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|
1261 data[n] = 0; |
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|
1262 close(handle); |
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|
1263 exitflag = 0; |
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|
1264 ap.pointer = data; |
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|
1265 ap.line = ap.column = 1; |
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|
1266 perform_action(ap); |
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|
1267 st[errorlevel_index].data.integer = exitcode; |
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|
1268 exitflag = exitcode = 0; |
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|
1269 return; |
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|
1270 } |
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|
1271 |
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|
1272 internal_commands_descriptor internal_commands[] = { |
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|
1273 {"ECHO", echo}, |
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|
1274 {"EXIT", exit_script}, |
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|
1275 {"FILES", files}, |
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|
1276 {"PAUSE", pause}, |
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|
1277 // {"RETURN", return_script}, |
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|
1278 {"SUBDIRS", subdirs}, |
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|
1279 {NULL, NULL} |
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|
1280 }; |
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|
1281 |
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|
1282 struct built_ins_descriptor built_ins[] = { |
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|
1283 {"file_exists", file_exists}, |
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|
1284 {"directory_exists", directory_exists}, |
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|
1285 {"string_length", string_length}, |
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|
1286 {"file_length", get_file_length}, |
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|
1287 {"disk_space", disk_space}, |
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|
1288 {"file_time", file_time}, |
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|
1289 {NULL, NULL} |
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|
1290 }; |
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|
1291 |
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|
1292 void set_extension(char *path, char *e) { |
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|
1293 char s[MAXPATH]; |
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|
1294 char drive[MAXDRIVE]; |
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|
1295 char dir[MAXDIR]; |
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|
1296 char file[MAXFILE]; |
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|
1297 char ext[MAXEXT]; |
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|
1298 |
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|
1299 fnsplit(path,drive,dir,file,ext); |
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|
1300 fnmerge(s, drive, dir, file, e); |
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1301 ++sa << s; |
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1302 } |
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|
1303 |
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|
1304 /* |
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|
1305 Note that if this program is called without any arguments, it looks for a |
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|
1306 script with the same name as the executable. Thus, to make an install |
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|
1307 program that picks up the install script without any arguments, you simply |
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|
1308 rename DSL.EXE to INSTALL.EXE. Then when you run it without any arguments |
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|
1309 it will run the INSTALL.DSL script. |
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|
1310 */ |
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|
1311 |
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|
1312 void main(int argc, char *argv[]) { |
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|
1313 int arg_number = 0; |
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|
1314 int i = 1; |
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|
1315 int j = 0; |
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|
1316 |
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|
1317 init_dos_internals(); |
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|
1318 set_arg(j++, argv[0]); |
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|
1319 if (argc > i && (argv[i][0] == '/' || argv[i][0] == '-')) { |
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1320 if (toupper(argv[i][1]) != 'D') { |
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1321 printf("Unrecognized switch -- /%s\n",argv[i][1]); |
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1322 return; |
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1323 } |
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1324 debug_switch = 1; |
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1325 i++; |
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1326 } |
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1327 if (argc > i) arg_number = i++; |
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1328 set_extension(argv[arg_number], "DSL"); |
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1329 set_arg(j++,copy(sa)); |
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1330 while (i < argc) set_arg(j++, argv[i++]); |
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1331 define_integer("argc", j); |
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1332 invoke_script(); // Takes file name from sa |
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1333 exit(exitcode); |
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1334 } |
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1335 } // End Embedded C |