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1 /* expandargv test program,
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2 Copyright (C) 2006 Free Software Foundation, Inc.
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3 Written by Carlos O'Donell <carlos@codesourcery.com>
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4
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5 This file is part of the libiberty library, which is part of GCC.
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6
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7 This file is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2 of the License, or
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10 (at your option) any later version.
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11
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12 In addition to the permissions in the GNU General Public License, the
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13 Free Software Foundation gives you unlimited permission to link the
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14 compiled version of this file into combinations with other programs,
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15 and to distribute those combinations without any restriction coming
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16 from the use of this file. (The General Public License restrictions
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17 do apply in other respects; for example, they cover modification of
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18 the file, and distribution when not linked into a combined
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19 executable.)
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20
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21 This program is distributed in the hope that it will be useful,
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22 but WITHOUT ANY WARRANTY; without even the implied warranty of
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23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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24 GNU General Public License for more details.
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25
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26 You should have received a copy of the GNU General Public License
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27 along with this program; if not, write to the Free Software
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28 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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29 */
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30
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31 #ifdef HAVE_CONFIG_H
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32 #include "config.h"
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33 #endif
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34 #include "libiberty.h"
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35 #include <stdio.h>
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36 #include <errno.h>
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37 #ifdef HAVE_STDLIB_H
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38 #include <stdlib.h>
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39 #endif
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40 #ifdef HAVE_STRING_H
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41 #include <string.h>
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42 #endif
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43
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44 #ifndef EXIT_SUCCESS
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45 #define EXIT_SUCCESS 0
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46 #endif
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47
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48 #ifndef EXIT_FAILURE
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49 #define EXIT_FAILURE 1
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50 #endif
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51
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52 static void fatal_error (int, const char *, int) ATTRIBUTE_NORETURN;
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53 void writeout_test (int, const char *);
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54 void run_replaces (char *);
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55 void hook_char_replace (char *, size_t, char, char);
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56 int run_tests (const char **);
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57 void erase_test (int);
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58
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59 /* Test input data, argv before, and argv after:
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60
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61 The \n is an important part of test_data since expandargv
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62 may have to work in environments where \n is translated
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63 as \r\n. Thus \n is included in the test data for the file.
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64
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65 We use \b to indicate that the test data is the null character.
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66 This is because we use \0 normally to represent the end of the
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67 file data, so we need something else for this. */
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68
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69 #define FILENAME_PATTERN "test-expandargv-%d.lst"
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70 #define ARGV0 "test-expandargv"
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71
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72 const char *test_data[] = {
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73 /* Test 0 - Check for expansion with \r\n */
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74 "a\r\nb", /* Test 0 data */
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75 ARGV0,
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76 "@test-expandargv-0.lst",
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77 0, /* End of argv[] before expansion */
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78 ARGV0,
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79 "a",
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80 "b",
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81 0, /* End of argv[] after expansion */
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82
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83 /* Test 1 - Check for expansion with \n */
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84 "a\nb", /* Test 1 data */
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85 ARGV0,
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86 "@test-expandargv-1.lst",
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87 0,
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88 ARGV0,
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89 "a",
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90 "b",
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91 0,
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92
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93 /* Test 2 - Check for expansion with \0 */
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94 "a\bb", /* Test 2 data */
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95 ARGV0,
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96 "@test-expandargv-2.lst",
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97 0,
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98 ARGV0,
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99 "a",
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100 0,
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101
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102 /* Test 3 - Check for expansion with only \0 */
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103 "\b", /* Test 3 data */
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104 ARGV0,
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105 "@test-expandargv-3.lst",
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106 0,
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107 ARGV0,
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108 0,
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109
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110 0 /* Test done marker, don't remove. */
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111 };
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112
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113 /* Print a fatal error and exit. LINE is the line number where we
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114 detected the error, ERRMSG is the error message to print, and ERR
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115 is 0 or an errno value to print. */
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116
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117 static void
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118 fatal_error (int line, const char *errmsg, int err)
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119 {
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120 fprintf (stderr, "test-expandargv:%d: %s", line, errmsg);
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121 if (errno != 0)
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122 fprintf (stderr, ": %s", xstrerror (err));
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123 fprintf (stderr, "\n");
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124 exit (EXIT_FAILURE);
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125 }
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126
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127 /* hook_char_replace:
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128 Replace 'replacethis' with 'withthis' */
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129
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130 void
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131 hook_char_replace (char *string, size_t len, char replacethis, char withthis)
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132 {
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133 int i = 0;
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134 for (i = 0; i < len; i++)
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135 if (string[i] == replacethis)
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136 string[i] = withthis;
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137 }
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138
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139 /* run_replaces:
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140 Hook here all the character for character replaces.
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141 Be warned that expanding the string or contracting the string
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142 should be handled with care. */
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143
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144 void
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145 run_replaces (char * string)
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146 {
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147 /* Store original string size */
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148 size_t len = strlen (string);
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149 hook_char_replace (string, len, '\b', '\0');
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150 }
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151
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152 /* write_test:
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153 Write test datafile */
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154
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155 void
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156 writeout_test (int test, const char * test_data)
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157 {
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158 char filename[256];
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159 FILE *fd;
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160 size_t len;
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161 char * parse;
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162
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163 /* Unique filename per test */
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164 sprintf (filename, FILENAME_PATTERN, test);
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165 fd = fopen (filename, "w");
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166 if (fd == NULL)
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167 fatal_error (__LINE__, "Failed to create test file.", errno);
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168
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169 /* Generate RW copy of data for replaces */
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170 len = strlen (test_data);
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171 parse = malloc (sizeof (char) * (len + 1));
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172 if (parse == NULL)
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173 fatal_error (__LINE__, "Failed to malloc parse.", errno);
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174
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175 memcpy (parse, test_data, sizeof (char) * len);
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176 /* Run all possible replaces */
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177 run_replaces (parse);
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178
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179 fwrite (parse, len, sizeof (char), fd);
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180 free (parse);
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181 fclose (fd);
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182 }
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183
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184 /* erase_test:
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185 Erase the test file */
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186
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187 void
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188 erase_test (int test)
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189 {
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190 char filename[256];
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191 sprintf (filename, FILENAME_PATTERN, test);
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192 if (unlink (filename) != 0)
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193 fatal_error (__LINE__, "Failed to erase test file.", errno);
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194 }
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195
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196
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197 /* run_tests:
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198 Run expandargv
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199 Compare argv before and after.
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200 Return number of fails */
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201
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202 int
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203 run_tests (const char **test_data)
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204 {
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205 int argc_after, argc_before;
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206 char ** argv_before, ** argv_after;
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207 int i, j, k, fails, failed;
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208
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209 i = j = fails = 0;
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210 /* Loop over all the tests */
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211 while (test_data[j])
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212 {
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213 /* Write test data */
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214 writeout_test (i, test_data[j++]);
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215 /* Copy argv before */
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216 argv_before = dupargv ((char **) &test_data[j]);
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217
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218 /* Count argc before/after */
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219 argc_before = 0;
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220 argc_after = 0;
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221 while (test_data[j + argc_before])
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222 argc_before++;
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223 j += argc_before + 1; /* Skip null */
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224 while (test_data[j + argc_after])
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225 argc_after++;
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226
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227 /* Copy argv after */
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228 argv_after = dupargv ((char **) &test_data[j]);
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229
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230 /* Run all possible replaces */
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231 for (k = 0; k < argc_before; k++)
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232 run_replaces (argv_before[k]);
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233 for (k = 0; k < argc_after; k++)
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234 run_replaces (argv_after[k]);
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235
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236 /* Run test: Expand arguments */
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237 expandargv (&argc_before, &argv_before);
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238
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239 failed = 0;
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240 /* Compare size first */
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241 if (argc_before != argc_after)
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242 {
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243 printf ("FAIL: test-expandargv-%d. Number of arguments don't match.\n", i);
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244 failed++;
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245 }
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246 /* Compare each of the argv's ... */
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247 else
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248 for (k = 0; k < argc_after; k++)
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249 if (strncmp (argv_before[k], argv_after[k], strlen(argv_after[k])) != 0)
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250 {
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251 printf ("FAIL: test-expandargv-%d. Arguments don't match.\n", i);
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252 failed++;
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253 }
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254
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255 if (!failed)
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256 printf ("PASS: test-expandargv-%d.\n", i);
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257 else
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258 fails++;
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259
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260 freeargv (argv_before);
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261 freeargv (argv_after);
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262 /* Advance to next test */
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263 j += argc_after + 1;
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264 /* Erase test file */
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265 erase_test (i);
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266 i++;
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267 }
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268 return fails;
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269 }
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270
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271 /* main:
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272 Run tests.
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273 Check result and exit with appropriate code. */
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274
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275 int
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276 main(int argc, char **argv)
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277 {
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278 int fails;
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279 /* Repeat for all the tests:
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280 - Parse data array and write into file.
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281 - Run replace hooks before writing to file.
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282 - Parse data array and build argv before/after.
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283 - Run replace hooks on argv before/after
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284 - Run expandargv.
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285 - Compare output of expandargv argv to after argv.
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286 - If they compare the same then test passes
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287 else the test fails.
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288 - Erase test file. */
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289
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290 fails = run_tests (test_data);
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291 if (!fails)
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292 exit (EXIT_SUCCESS);
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293 else
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294 exit (EXIT_FAILURE);
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295 }
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296
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