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annotate src/itemlist.c @ 91:93cc929329eb noffle

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[svn] Date output change and now date parsing
author bears
date Fri, 19 May 2000 16:12:45 +0100
parents 78e2ae741240
children 24d4cd032da5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
43
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1 /*
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2 itemlist.c
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3
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4 $Id: itemlist.c 78 2000-05-13 15:34:15Z bears $
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5 */
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6
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7 #if HAVE_CONFIG_H
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8 #include <config.h>
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9 #endif
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10
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11 #include "itemlist.h"
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12 #include <ctype.h>
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13 #include <string.h>
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14 #include <stdlib.h>
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15 #include "common.h"
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16 #include "log.h"
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17 #include "portable.h"
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18
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19 #if defined(ITEMLIST_TEST)
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20 #define Log_err printf
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21 #endif
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22
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23 #define SEP_CHAR '\1' /* Replace all separators with this */
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24
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25 struct ItemList
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26 {
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27 char *list;
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28 char *next;
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29 size_t count;
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30 };
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31
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32 /* Make a new item list. */
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33 ItemList *
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34 new_Itl( const char *list, const char *separators )
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35 {
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36 ItemList * res;
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37 char *p;
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38 Bool inItem;
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39
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40 res = malloc( sizeof( ItemList ) );
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41 if ( res == NULL )
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42 {
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43 Log_err( "Malloc of ItemList failed." );
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44 exit( EXIT_FAILURE );
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45 }
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46
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47 res->list = malloc ( strlen(list) + 2 );
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48 if ( res->list == NULL )
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49 {
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50 Log_err( "Malloc of ItemList.list failed." );
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51 exit( EXIT_FAILURE );
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52 }
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53 strcpy( res->list, list );
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54
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55 res->count = 0;
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56 res->next = res->list;
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57
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58 /* Separate items into strings and have final zero-length string. */
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59 for( p = res->list, inItem = FALSE; *p != '\0'; p++ )
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60 {
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61 Bool isSep = ( strchr( separators, p[ 0 ] ) != NULL );
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62
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63 if ( inItem )
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64 {
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65 if ( isSep )
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66 {
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67 p[ 0 ] = '\0';
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68 inItem = FALSE;
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69 res->count++;
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70 }
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71 }
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72 else
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73 {
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74 if ( isSep )
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75 p[ 0 ] = SEP_CHAR;
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76 else
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77 inItem = TRUE;
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78 }
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79 }
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80 if ( inItem )
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81 res->count++;
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82 p[ 1 ] = '\0';
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83 return res;
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84 }
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85
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86 /* Delete an item list. */
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87 void
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88 del_Itl( ItemList *self )
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89 {
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90 if ( self == NULL )
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91 return;
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92 free( self->list );
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93 free( self );
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94 }
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95
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96 /* Get first item. */
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97 const char *
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98 Itl_first( ItemList *self)
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99 {
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100 self->next = self->list;
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101 return Itl_next( self );
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102 }
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103
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104 /* Get next item or NULL. */
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105 const char *
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106 Itl_next( ItemList *self )
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107 {
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108 char *res = self->next;
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109
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110 if ( res[ 0 ] == '\0' )
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111 return NULL;
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112
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113 while ( res[ 0 ] == SEP_CHAR )
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114 res++;
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115
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116 if ( res[ 0 ] == '\0' && res[ 1 ] == '\0' )
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117 return NULL;
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118
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119 self->next = res + strlen( res ) + 1;
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120 return res;
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121 }
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122
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123 /* Get count of items in list. */
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124 size_t
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125 Itl_count( const ItemList *self )
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126 {
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127 return self->count;
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128 }
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129
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130 #if defined(ITEMLIST_TEST)
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131
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132 /* Test code borrowed from wildmat.c. Yep, still uses gets(). */
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133 extern char *gets();
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134
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135 int
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136 main()
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137 {
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138 Str line;
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139 Str seps;
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140 ItemList * itl;
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141 int count;
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142 const char *item;
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143
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144 printf( "Itemlist tester. Enter seperators, then strings to test.\n" );
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145 printf( "A blank line gets prompts for new seperators; blank separators\n" );
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146 printf( "exits the program.\n" );
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147
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148 for ( ; ; )
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149 {
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150 printf( "\nEnter seperators: " );
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151 (void) fflush( stdout );
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152 if ( gets( seps ) == NULL || seps[0] == '\0' )
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153 break;
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154 for ( ; ; )
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155 {
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156 printf( "Enter line: " );
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157 (void) fflush( stdout );
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158 if ( gets( line ) == NULL )
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159 exit( 0 );
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160 if ( line[0] == '\0' )
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161 break;
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162 itl = new_Itl( line, seps );
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163 printf( "%d items on list\n", Itl_count( itl ) );
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164 count = 0;
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165 for ( item = Itl_first( itl );
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166 item != NULL;
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167 item = Itl_next( itl ) )
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168 printf( " Item %d is '%s'\n", ++count, item );
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169 if ( count != Itl_count( itl ) )
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170 printf( "*** Warning - counts don't match ***\n" );
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171 del_Itl( itl );
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172 }
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173 }
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174
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175 exit(0);
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176 /* NOTREACHED */
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177 }
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178 #endif /* defined(TEST) */