annotate files.c @ 174:09cfad6772de

Some minor cosmetic changes relating to ei->itemtype.
author David A. Holland
date Fri, 12 Jun 2015 02:21:28 -0400
parents f14f5352956c
children ffdb0b73856f
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1 /*-
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60184aa42604 add 2013 to copyrights where it seems warranted
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2 * Copyright (c) 2010, 2013 The NetBSD Foundation, Inc.
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3 * All rights reserved.
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4 *
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5 * This code is derived from software contributed to The NetBSD Foundation
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6 * by David A. Holland.
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7 *
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions
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10 * are met:
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11 * 1. Redistributions of source code must retain the above copyright
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12 * notice, this list of conditions and the following disclaimer.
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13 * 2. Redistributions in binary form must reproduce the above copyright
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14 * notice, this list of conditions and the following disclaimer in the
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15 * documentation and/or other materials provided with the distribution.
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16 *
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17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 * POSSIBILITY OF SUCH DAMAGE.
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28 */
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29
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30 #include <stdbool.h>
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31 #include <stdio.h>
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32 #include <stdlib.h>
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33 #include <string.h>
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34 #include <unistd.h>
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35 #include <fcntl.h>
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36 #include <errno.h>
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37
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38 #include "array.h"
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39 #include "mode.h"
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40 #include "place.h"
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41 #include "files.h"
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42 #include "directive.h"
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43
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44 struct incdir {
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45 const char *name;
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46 bool issystem;
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47 };
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48
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49 DECLARRAY(incdir, static UNUSED);
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50 DEFARRAY(incdir, static);
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51
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52 static struct incdirarray quotepath, bracketpath;
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53
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54 ////////////////////////////////////////////////////////////
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55 // management
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56
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57 static
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58 struct incdir *
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59 incdir_create(const char *name, bool issystem)
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60 {
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61 struct incdir *id;
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62
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63 id = domalloc(sizeof(*id));
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64 id->name = name;
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65 id->issystem = issystem;
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66 return id;
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67 }
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69 static
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70 void
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71 incdir_destroy(struct incdir *id)
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72 {
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73 dofree(id, sizeof(*id));
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74 }
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76 void
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77 files_init(void)
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78 {
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79 incdirarray_init(&quotepath);
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80 incdirarray_init(&bracketpath);
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81 }
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82
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83 DESTROYALL_ARRAY(incdir, );
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84
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85 void
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86 files_cleanup(void)
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87 {
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88 incdirarray_destroyall(&quotepath);
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89 incdirarray_cleanup(&quotepath);
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90 incdirarray_destroyall(&bracketpath);
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91 incdirarray_cleanup(&bracketpath);
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92 }
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93
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94 ////////////////////////////////////////////////////////////
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95 // path setup
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96
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97 void
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98 files_addquotepath(const char *dir, bool issystem)
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99 {
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100 struct incdir *id;
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101
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102 id = incdir_create(dir, issystem);
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103 incdirarray_add(&quotepath, id, NULL);
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104 }
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105
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106 void
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107 files_addbracketpath(const char *dir, bool issystem)
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108 {
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109 struct incdir *id;
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110
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111 id = incdir_create(dir, issystem);
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112 incdirarray_add(&bracketpath, id, NULL);
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113 }
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114
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115 ////////////////////////////////////////////////////////////
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116 // parsing
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117
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118 /*
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119 * Find the end of the logical line. End of line characters that are
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120 * commented out do not count.
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121 */
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122 static
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123 size_t
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124 findeol(const char *buf, size_t start, size_t limit)
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125 {
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126 size_t i;
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127 int incomment = 0;
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128 bool inquote = false;
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129 char quote = '\0';
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130
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131 for (i=start; i<limit; i++) {
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132 if (incomment) {
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133 if (i+1 < limit && buf[i] == '*' && buf[i+1] == '/') {
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134 i++;
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135 incomment = 0;
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136 }
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137 } else if (!inquote && i+1 < limit &&
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138 buf[i] == '/' && buf[i+1] == '*') {
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139 i++;
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140 incomment = 1;
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141 } else if (i+1 < limit &&
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142 buf[i] == '\\' && buf[i+1] != '\n') {
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143 i++;
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144 } else if (!inquote && (buf[i] == '"' || buf[i] == '\'')) {
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145 inquote = true;
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146 quote = buf[i];
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147 } else if (inquote && buf[i] == quote) {
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148 inquote = false;
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149 } else if (buf[i] == '\n') {
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150 return i;
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151 }
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152 }
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153 return limit;
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154 }
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155
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156 static
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157 unsigned
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158 countnls(const char *buf, size_t start, size_t limit)
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159 {
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160 size_t i;
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161 unsigned count = 0;
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162
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163 for (i=start; i<limit; i++) {
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164 if (buf[i] == '\n') {
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165 count++;
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166 }
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167 }
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168 return count;
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169 }
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170
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171 static
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172 void
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173 file_read(const struct placefile *pf, int fd, const char *name, bool toplevel)
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174 {
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175 struct lineplace places;
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176 struct place ptmp;
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177 size_t bufend, bufmax, linestart, lineend, nextlinestart, tmp;
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178 ssize_t result;
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179 bool ateof = false;
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180 char *buf;
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181
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182 place_setfilestart(&places.current, pf);
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183 places.nextline = places.current;
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184
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185 bufmax = 128;
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186 bufend = 0;
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187 linestart = 0;
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188 lineend = 0;
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189 buf = domalloc(bufmax);
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190
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191 while (1) {
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192 if (lineend >= bufend) {
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193 /* do not have a whole line in the buffer; read more */
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194 assert(bufend >= linestart);
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195 if (linestart > 0 && bufend > linestart) {
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196 /* slide to beginning of buffer */
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197 memmove(buf, buf+linestart, bufend-linestart);
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198 bufend -= linestart;
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199 lineend -= linestart;
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200 linestart = 0;
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201 }
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diff changeset
202 if (bufend >= bufmax) {
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diff changeset
203 /* need bigger buffer */
39
337110e7240a Pass the size to free; it makes debug checking easier.
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diff changeset
204 buf = dorealloc(buf, bufmax, bufmax*2);
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diff changeset
205 bufmax = bufmax*2;
15
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206 }
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diff changeset
207
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diff changeset
208 if (ateof) {
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diff changeset
209 /* don't read again, in case it's a socket */
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diff changeset
210 result = 0;
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diff changeset
211 } else {
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diff changeset
212 result = read(fd, buf+bufend, bufmax - bufend);
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213 }
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214
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215 if (result == -1) {
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diff changeset
216 /* read error */
143
ed45f2d8d3bc Don't use the <err.h> functions.
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diff changeset
217 complain(NULL, "%s: %s",
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diff changeset
218 name, strerror(errno));
15
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219 complain_fail();
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diff changeset
220 } else if (result == 0 && bufend == linestart) {
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221 /* eof */
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diff changeset
222 ateof = true;
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223 break;
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224 } else if (result == 0) {
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diff changeset
225 /* eof in middle of line */
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diff changeset
226 ateof = true;
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227 ptmp = places.current;
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diff changeset
228 ptmp.column += bufend - linestart;
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diff changeset
229 complain(&ptmp, "No newline at end of file");
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diff changeset
230 if (mode.werror) {
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diff changeset
231 complain_fail();
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diff changeset
232 }
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233 assert(bufend < bufmax);
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234 lineend = bufend++;
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235 buf[lineend] = '\n';
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236 } else {
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diff changeset
237 bufend += (size_t)result;
81
27c9aafcaca1 Don't recognize comments within double-quote strings.
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238 lineend = findeol(buf, linestart, bufend);
15
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diff changeset
239 }
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diff changeset
240 /* loop in case we still don't have a whole line */
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241 continue;
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242 }
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243
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244 /* have a line */
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diff changeset
245 assert(buf[lineend] == '\n');
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246 buf[lineend] = '\0';
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diff changeset
247 nextlinestart = lineend+1;
154
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diff changeset
248 places.nextline.line++;
15
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diff changeset
249
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diff changeset
250 /* check for CR/NL */
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diff changeset
251 if (lineend > 0 && buf[lineend-1] == '\r') {
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diff changeset
252 buf[lineend-1] = '\0';
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253 lineend--;
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254 }
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255
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diff changeset
256 /* check for continuation line */
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diff changeset
257 if (lineend > 0 && buf[lineend-1]=='\\') {
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diff changeset
258 lineend--;
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diff changeset
259 tmp = nextlinestart - lineend;
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diff changeset
260 if (bufend > nextlinestart) {
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diff changeset
261 memmove(buf+lineend, buf+nextlinestart,
f6177d3ed5c2 handle directives
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diff changeset
262 bufend - nextlinestart);
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diff changeset
263 }
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diff changeset
264 bufend -= tmp;
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diff changeset
265 nextlinestart -= tmp;
81
27c9aafcaca1 Don't recognize comments within double-quote strings.
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diff changeset
266 lineend = findeol(buf, linestart, bufend);
15
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diff changeset
267 /* might not have a whole line, so loop */
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268 continue;
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269 }
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diff changeset
270
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diff changeset
271 /* line now goes from linestart to lineend */
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diff changeset
272 assert(buf[lineend] == '\0');
75
980ed7cb620a More multiline comment fixes.
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diff changeset
273
980ed7cb620a More multiline comment fixes.
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diff changeset
274 /* count how many commented-out newlines we swallowed */
154
a2c2fe8dbea3 Wrap up the current and next line position when invoking directives.
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diff changeset
275 places.nextline.line += countnls(buf, linestart, lineend);
75
980ed7cb620a More multiline comment fixes.
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diff changeset
276
980ed7cb620a More multiline comment fixes.
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diff changeset
277 /* if the line isn't empty, process it */
15
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diff changeset
278 if (lineend > linestart) {
154
a2c2fe8dbea3 Wrap up the current and next line position when invoking directives.
David A. Holland
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diff changeset
279 directive_gotline(&places,
15
f6177d3ed5c2 handle directives
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diff changeset
280 buf+linestart, lineend-linestart);
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diff changeset
281 }
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diff changeset
282
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diff changeset
283 linestart = nextlinestart;
75
980ed7cb620a More multiline comment fixes.
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diff changeset
284 lineend = findeol(buf, linestart, bufend);
154
a2c2fe8dbea3 Wrap up the current and next line position when invoking directives.
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diff changeset
285 places.current = places.nextline;
15
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diff changeset
286 }
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diff changeset
287
28
8a955e3dda2c two more tests, more fixes
David A. Holland
parents: 24
diff changeset
288 if (toplevel) {
154
a2c2fe8dbea3 Wrap up the current and next line position when invoking directives.
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diff changeset
289 directive_goteof(&places.current);
28
8a955e3dda2c two more tests, more fixes
David A. Holland
parents: 24
diff changeset
290 }
39
337110e7240a Pass the size to free; it makes debug checking easier.
David A. Holland
parents: 38
diff changeset
291 dofree(buf, bufmax);
15
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diff changeset
292 }
6
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293
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294 ////////////////////////////////////////////////////////////
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295 // path search
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296
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297 static
13
120629a5d6bf seenfile -> placefile (clearer)
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diff changeset
298 char *
112
2b0b61fd1a36 Fix handling of relative includes.
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diff changeset
299 mkfilename(struct place *place, const char *dir, const char *file)
13
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
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diff changeset
300 {
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
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diff changeset
301 size_t dlen, flen, rlen;
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
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diff changeset
302 char *ret;
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
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diff changeset
303 bool needslash = false;
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David A. Holland
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diff changeset
304
112
2b0b61fd1a36 Fix handling of relative includes.
David A. Holland
parents: 107
diff changeset
305 if (dir == NULL) {
2b0b61fd1a36 Fix handling of relative includes.
David A. Holland
parents: 107
diff changeset
306 dir = place_getparsedir(place);
2b0b61fd1a36 Fix handling of relative includes.
David A. Holland
parents: 107
diff changeset
307 }
2b0b61fd1a36 Fix handling of relative includes.
David A. Holland
parents: 107
diff changeset
308
13
120629a5d6bf seenfile -> placefile (clearer)
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diff changeset
309 dlen = strlen(dir);
120629a5d6bf seenfile -> placefile (clearer)
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diff changeset
310 flen = strlen(file);
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
311 if (dlen > 0 && dir[dlen-1] != '/') {
120629a5d6bf seenfile -> placefile (clearer)
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diff changeset
312 needslash = true;
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David A. Holland
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diff changeset
313 }
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
314
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
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diff changeset
315 rlen = dlen + (needslash ? 1 : 0) + flen;
120629a5d6bf seenfile -> placefile (clearer)
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diff changeset
316 ret = domalloc(rlen + 1);
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
317 strcpy(ret, dir);
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
318 if (needslash) {
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
319 strcat(ret, "/");
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
320 }
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
321 strcat(ret, file);
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
322 return ret;
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
323 }
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
324
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
325 static
6
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diff changeset
326 int
0601b6e8e53d checkpoint - can find files
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parents:
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327 file_tryopen(const char *file)
0601b6e8e53d checkpoint - can find files
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diff changeset
328 {
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329 int fd;
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David A. Holland
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330
15
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diff changeset
331 /* XXX check for non-regular files */
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diff changeset
332
6
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parents:
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333 fd = open(file, O_RDONLY);
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David A. Holland
parents:
diff changeset
334 if (fd < 0) {
113
1e7144176a42 Print a warning if we get an unexpected error trying to open a file.
David A. Holland
parents: 112
diff changeset
335 if (errno != ENOENT && errno != ENOTDIR) {
143
ed45f2d8d3bc Don't use the <err.h> functions.
David A. Holland
parents: 128
diff changeset
336 complain(NULL, "%s: %s", file, strerror(errno));
113
1e7144176a42 Print a warning if we get an unexpected error trying to open a file.
David A. Holland
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diff changeset
337 }
6
0601b6e8e53d checkpoint - can find files
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338 return -1;
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
339 }
15
f6177d3ed5c2 handle directives
David A. Holland
parents: 13
diff changeset
340
6
0601b6e8e53d checkpoint - can find files
David A. Holland
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diff changeset
341 return fd;
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
342 }
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
343
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
344 static
0601b6e8e53d checkpoint - can find files
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345 void
0601b6e8e53d checkpoint - can find files
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diff changeset
346 file_search(struct place *place, struct incdirarray *path, const char *name)
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
347 {
0601b6e8e53d checkpoint - can find files
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parents:
diff changeset
348 unsigned i, num;
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
349 struct incdir *id;
13
120629a5d6bf seenfile -> placefile (clearer)
David A. Holland
parents: 10
diff changeset
350 const struct placefile *pf;
6
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
351 char *file;
0601b6e8e53d checkpoint - can find files
David A. Holland
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diff changeset
352 int fd;
0601b6e8e53d checkpoint - can find files
David A. Holland
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diff changeset
353
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
354 assert(place != NULL);
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
355
104
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
356 if (name[0] == '/') {
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
357 fd = file_tryopen(name);
6
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
358 if (fd >= 0) {
104
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
359 pf = place_addfile(place, name, true);
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
360 file_read(pf, fd, name, false);
6
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
361 close(fd);
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
362 return;
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
363 }
104
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
364 } else {
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
365 num = incdirarray_num(path);
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
366 for (i=0; i<num; i++) {
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
367 id = incdirarray_get(path, i);
112
2b0b61fd1a36 Fix handling of relative includes.
David A. Holland
parents: 107
diff changeset
368 file = mkfilename(place, id->name, name);
104
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
369 fd = file_tryopen(file);
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
370 if (fd >= 0) {
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
371 pf = place_addfile(place, file, id->issystem);
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
372 file_read(pf, fd, file, false);
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
373 dostrfree(file);
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
374 close(fd);
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
375 return;
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
376 }
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
377 dostrfree(file);
91f600e6647b Allow absolute paths in include files.
David A. Holland
parents: 99
diff changeset
378 }
6
0601b6e8e53d checkpoint - can find files
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parents:
diff changeset
379 }
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
380 complain(place, "Include file %s not found", name);
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
381 complain_fail();
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
382 }
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
383
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
384 void
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
385 file_readquote(struct place *place, const char *name)
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
386 {
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
387 file_search(place, &quotepath, name);
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
388 }
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
389
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
390 void
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
391 file_readbracket(struct place *place, const char *name)
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
392 {
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
393 file_search(place, &bracketpath, name);
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
diff changeset
394 }
0601b6e8e53d checkpoint - can find files
David A. Holland
parents:
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395
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396 void
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397 file_readabsolute(struct place *place, const char *name)
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398 {
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399 const struct placefile *pf;
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400 int fd;
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401
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402 assert(place != NULL);
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403
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404 if (name == NULL) {
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405 fd = STDIN_FILENO;
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406 pf = place_addfile(place, "<standard-input>", false);
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407 } else {
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408 fd = file_tryopen(name);
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409 if (fd < 0) {
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410 complain(NULL, "%s: %s", name, strerror(errno));
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411 die();
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412 }
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413 pf = place_addfile(place, name, false);
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414 }
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415
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416 file_read(pf, fd, name, true);
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417
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418 if (name != NULL) {
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419 close(fd);
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420 }
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421 }