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Guard against single operand multiplication when detecting like terms This *shouldn't* happen, but it apparently does in some pathological cases so guard against a single operand multiplication to prevent a crash.
author William Astle <lost@l-w.ca>
date Mon, 04 Nov 2024 23:48:23 -0700
parents a6c9129e5948
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 /*
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2 main.c
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3 Copyright © 2009 William Astle
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4
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5 This file is part of LWAR.
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6
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7 LWAR is free software: you can redistribute it and/or modify it under the
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8 terms of the GNU General Public License as published by the Free Software
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9 Foundation, either version 3 of the License, or (at your option) any later
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10 version.
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11
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12 This program is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 more details.
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16
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17 You should have received a copy of the GNU General Public License along with
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18 this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20
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21 Implements the program startup code
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22
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23 */
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24
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25 #include <errno.h>
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26 #include <stdio.h>
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27 #include <stdlib.h>
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28 #include <sys/types.h>
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29 #include <sys/stat.h>
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30
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31 #include <lw_cmdline.h>
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32 #include <version.h>
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33
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34 #include "lwar.h"
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35
386
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36 #ifdef _MSC_VER
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37 #include <lw_win.h> // windows build
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38 #else
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39 #include <unistd.h>
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40 #endif
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41
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42 // command line option handling
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43 #define PROGVER "lwar from " PACKAGE_STRING
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44 char *program_name;
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45
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46 static int parse_opts(int key, char *arg, void *state)
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47 {
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48 switch (key)
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49 {
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50 case 'd':
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51 // debug
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52 debug_level++;
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53 break;
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54
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55 case 'n':
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56 // filename only, no path
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57 filename_flag++;
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58 break;
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59
0
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60 case 'a':
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61 // add members
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62 operation = LWAR_OP_ADD;
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63 break;
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64
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65 case 'c':
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66 // create archive
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67 operation = LWAR_OP_CREATE;
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68 break;
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69
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70 case 'm':
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71 mergeflag = 1;
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72 break;
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73
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74 case 'r':
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75 // replace members
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76 operation = LWAR_OP_REPLACE;
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77 break;
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78
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79 case 'l':
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80 // list members
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81 operation = LWAR_OP_LIST;
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82 break;
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83
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84 case 'x':
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85 // extract members
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86 operation = LWAR_OP_EXTRACT;
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87 break;
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88
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89 case lw_cmdline_key_arg:
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90 if (archive_file)
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91 {
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92 // add archive member to list
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93 add_file_name(arg);
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94 }
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95 else
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96 archive_file = arg;
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97 break;
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98
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99 case lw_cmdline_key_end:
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100 break;
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101
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102 default:
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103 return lw_cmdline_err_unknown;
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104 }
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105 return 0;
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106 }
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107
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108 static struct lw_cmdline_options options[] =
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109 {
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110 { "replace", 'r', 0, 0,
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111 "Add or replace archive members" },
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112 { "extract", 'x', 0, 0,
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113 "Extract members from the archive" },
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114 { "add", 'a', 0, 0,
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115 "Add members to the archive" },
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116 { "list", 'l', 0, 0,
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117 "List the contents of the archive" },
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118 { "create", 'c', 0, 0,
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119 "Create new archive (or truncate existing one)" },
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120 { "merge", 'm', 0, 0,
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121 "Add the contents of archive arguments instead of the archives themselves" },
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122 { "nopaths", 'n', 0, 0,
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123 "Store only the filename when adding members and ignore the path, if any, when extracting members" },
0
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124 { "debug", 'd', 0, 0,
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125 "Set debug mode"},
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126 { 0 }
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127 };
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128
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129 static struct lw_cmdline_parser argparser =
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130 {
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131 options,
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132 parse_opts,
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133 "ARCHIVE [FILE ...]",
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134 "lwar, a library file manager for lwlink",
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135 PROGVER
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136 };
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137
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138 extern void do_list(void);
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139 extern void do_add(void);
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140 extern void do_remove(void);
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141 extern void do_replace(void);
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142 extern void do_extract(void);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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143
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144 // main function; parse command line, set up assembler state, and run the
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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145 // assembler on the first file
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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146 int main(int argc, char **argv)
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147 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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148 program_name = argv[0];
449
96a05e89ab03 Fix command line bug in lwar
William Astle <lost@l-w.ca>
parents: 441
diff changeset
149
441
b138b4005125 Make missing command line arguments fail properly
William Astle <lost@l-w.ca>
parents: 430
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150 if (lw_cmdline_parse(&argparser, argc, argv, 0, 0, NULL) != 0)
b138b4005125 Make missing command line arguments fail properly
William Astle <lost@l-w.ca>
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151 {
b138b4005125 Make missing command line arguments fail properly
William Astle <lost@l-w.ca>
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152 exit(1);
b138b4005125 Make missing command line arguments fail properly
William Astle <lost@l-w.ca>
parents: 430
diff changeset
153 }
0
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154 if (archive_file == NULL)
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155 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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156 fprintf(stderr, "You must specify an archive file.\n");
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157 exit(1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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158 }
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159
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160 if (operation == 0)
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161 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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162 fprintf(stderr, "You must specify an operation.\n");
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163 exit(1);
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164 }
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165
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166 if (operation == LWAR_OP_LIST || operation == LWAR_OP_REMOVE || operation == LWAR_OP_EXTRACT)
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167 {
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168 struct stat stbuf;
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169 // make sure the archive exists
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170 if (stat(archive_file, &stbuf) < 0)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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171 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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172 fprintf(stderr, "Cannot open archive file %s:\n", archive_file);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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173 perror("");
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174 exit(2);
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175 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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176 }
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177 if (operation == LWAR_OP_CREATE)
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178 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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179 struct stat stbuf;
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180 // check if the archive exists
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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181 if (stat(archive_file, &stbuf) < 0)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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182 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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183 if (errno != ENOENT)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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184 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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185 fprintf(stderr, "Cannot create archive file %s:\n", archive_file);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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186 perror("");
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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187 exit(2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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188 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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189 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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190 else
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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191 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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192 if (unlink(archive_file) < 0)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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193 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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194 fprintf(stderr, "Cannot create archive file %s:\n", archive_file);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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195 perror("");
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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196 exit(2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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197 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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198
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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199 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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200 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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201
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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202 switch (operation)
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203 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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204 case LWAR_OP_LIST:
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205 do_list();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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206 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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207
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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208 case LWAR_OP_ADD:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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209 case LWAR_OP_CREATE:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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210 do_add();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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211 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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212
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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213 case LWAR_OP_REMOVE:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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214 do_remove();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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215 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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216
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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217 case LWAR_OP_REPLACE:
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218 do_replace();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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219 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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220
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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221 case LWAR_OP_EXTRACT:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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222 do_extract();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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223 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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224 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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225
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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226 exit(0);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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227 }