annotate place.c @ 191:c8d4ab9aeff0

don't use "remove" as a local variable; fails on gcc4.1 (because of remove() in stdio.h)
author David A. Holland
date Fri, 12 Jun 2015 20:06:55 -0400
parents 16b4451e34b8
children 1d2bad7151f9
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1 /*-
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2 * Copyright (c) 2010 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 <assert.h>
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31 #include <stdarg.h>
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32 #include <stdio.h>
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33 #include <stdlib.h>
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34 #include <string.h>
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35
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36 #include "utils.h"
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37 #include "array.h"
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38 #include "place.h"
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39
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40 struct placefile {
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41 struct place includedfrom;
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42 char *dir;
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43 char *name;
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44 int depth;
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45 bool fromsystemdir;
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46 };
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47 DECLARRAY(placefile, static UNUSED);
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48 DEFARRAY(placefile, static);
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49
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50 static struct placefilearray placefiles;
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51 static bool overall_failure;
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52
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53 static const char *myprogname;
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54
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55 ////////////////////////////////////////////////////////////
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56 // placefiles
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57
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58 static
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59 struct placefile *
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60 placefile_create(const struct place *from, const char *name,
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61 bool fromsystemdir)
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62 {
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63 struct placefile *pf;
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64 const char *s;
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65 size_t len;
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66
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67 pf = domalloc(sizeof(*pf));
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68 pf->includedfrom = *from;
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69
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70 s = strrchr(name, '/');
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71 len = (s == NULL) ? 0 : s - name;
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72 pf->dir = dostrndup(name, len);
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73
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74 pf->name = dostrdup(name);
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75 pf->fromsystemdir = fromsystemdir;
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76
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77 if (from->file != NULL) {
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78 pf->depth = from->file->depth + 1;
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79 } else {
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80 pf->depth = 1;
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81 }
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82 return pf;
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83 }
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84
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85 static
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86 void
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87 placefile_destroy(struct placefile *pf)
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88 {
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89 dostrfree(pf->name);
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90 dofree(pf, sizeof(*pf));
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91 }
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92
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93 DESTROYALL_ARRAY(placefile, );
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94
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95 const char *
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96 place_getparsedir(const struct place *place)
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97 {
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98 if (place->file == NULL) {
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99 return ".";
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100 }
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101 return place->file->dir;
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102 }
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103
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104 static
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105 struct placefile *
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106 placefile_find(const struct place *incfrom, const char *name)
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107 {
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108 unsigned i, num;
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109 struct placefile *pf;
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110
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111 num = placefilearray_num(&placefiles);
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112 for (i=0; i<num; i++) {
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113 pf = placefilearray_get(&placefiles, i);
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114 if (place_eq(incfrom, &pf->includedfrom) &&
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115 !strcmp(name, pf->name)) {
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116 return pf;
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117 }
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118 }
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119 return NULL;
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120 }
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121
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122 void
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123 place_changefile(struct place *p, const char *name)
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124 {
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125 struct placefile *pf;
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126
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127 assert(p->type == P_FILE);
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128 if (!strcmp(name, p->file->name)) {
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129 return;
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130 }
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131 pf = placefile_find(&p->file->includedfrom, name);
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132 if (pf == NULL) {
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133 pf = placefile_create(&p->file->includedfrom, name,
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134 p->file->fromsystemdir);
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135 placefilearray_add(&placefiles, pf, NULL);
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136 }
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137 p->file = pf;
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138 }
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139
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140 const struct placefile *
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141 place_addfile(const struct place *place, const char *file, bool issystem)
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142 {
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143 struct placefile *pf;
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144
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145 pf = placefile_create(place, file, issystem);
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146 placefilearray_add(&placefiles, pf, NULL);
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147 if (pf->depth > 120) {
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148 complain(place, "Maximum include nesting depth exceeded");
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149 die();
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150 }
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151 return pf;
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152 }
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153
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154 ////////////////////////////////////////////////////////////
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155 // places
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156
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157 void
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158 place_setnowhere(struct place *p)
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159 {
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160 p->type = P_NOWHERE;
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161 p->file = NULL;
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162 p->line = 0;
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163 p->column = 0;
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164 }
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165
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166 void
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167 place_setbuiltin(struct place *p, unsigned num)
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168 {
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169 p->type = P_BUILTIN;
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170 p->file = NULL;
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171 p->line = num;
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172 p->column = 1;
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173 }
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174
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175 void
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176 place_setcommandline(struct place *p, unsigned line, unsigned column)
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177 {
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178 p->type = P_COMMANDLINE;
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179 p->file = NULL;
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180 p->line = line;
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181 p->column = column;
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182 }
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183
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184 void
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185 place_setfilestart(struct place *p, const struct placefile *pf)
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186 {
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187 p->type = P_FILE;
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188 p->file = pf;
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189 p->line = 1;
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190 p->column = 1;
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191 }
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192
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193 const char *
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194 place_getname(const struct place *p)
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195 {
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196 switch (p->type) {
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197 case P_NOWHERE: return "<nowhere>";
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198 case P_BUILTIN: return "<built-in>";
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199 case P_COMMANDLINE: return "<command-line>";
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200 case P_FILE: return p->file->name;
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201 }
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202 assert(0);
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203 return NULL;
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204 }
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205
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206 bool
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207 place_samefile(const struct place *a, const struct place *b)
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208 {
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209 if (a->type != b->type) {
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210 return false;
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211 }
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212 if (a->file != b->file) {
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213 return false;
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214 }
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215 return true;
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216 }
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217
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218 bool
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219 place_eq(const struct place *a, const struct place *b)
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220 {
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221 if (!place_samefile(a, b)) {
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222 return false;
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223 }
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224 if (a->line != b->line || a->column != b->column) {
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225 return false;
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226 }
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227 return true;
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228 }
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229
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230 static
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231 void
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232 place_printfrom(const struct place *p)
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233 {
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234 const struct place *from;
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235
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236 if (p->file == NULL) {
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237 return;
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238 }
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239 from = &p->file->includedfrom;
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240 if (from->type != P_NOWHERE) {
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241 place_printfrom(from);
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242 fprintf(stderr, "In file included from %s:%u:%u:\n",
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243 place_getname(from), from->line, from->column);
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244 }
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245 }
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246
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247 ////////////////////////////////////////////////////////////
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248 // complaints
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249
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250 void
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251 complain_init(const char *pn)
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252 {
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253 myprogname = pn;
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254 }
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255
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256 void
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257 complain(const struct place *p, const char *fmt, ...)
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258 {
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259 va_list ap;
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260
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261 if (p != NULL) {
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262 place_printfrom(p);
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263 fprintf(stderr, "%s:%u:%u: ", place_getname(p),
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264 p->line, p->column);
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265 } else {
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266 fprintf(stderr, "%s: ", myprogname);
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267 }
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268 va_start(ap, fmt);
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269 vfprintf(stderr, fmt, ap);
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270 va_end(ap);
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271 fprintf(stderr, "\n");
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272 }
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273
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274 void
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275 complain_fail(void)
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276 {
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277 overall_failure = true;
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278 }
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279
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280 bool
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281 complain_failed(void)
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282 {
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283 return overall_failure;
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284 }
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285
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286 ////////////////////////////////////////////////////////////
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287 // module init and cleanup
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288
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289 void
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290 place_init(void)
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291 {
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292 placefilearray_init(&placefiles);
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293 }
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294
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295 void
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296 place_cleanup(void)
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297 {
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298 placefilearray_destroyall(&placefiles);
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299 placefilearray_cleanup(&placefiles);
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300 }