Mercurial > noffle

annotate src/itemlist.c @ 180:09ca6eb5c7ff noffle

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[svn] * TODO,src/client.c,src/client.h,src/fetch.c,src/fetch.h,src/noffle.c: Improve error checking during fetches. A fetch is now aborted immediately if the connection times out or if an unexpected response arrives. This should fix problems with articles appearing in the wrong group, and possibly other mysterious happenings.
author bears
date Wed, 09 May 2001 12:33:43 +0100
parents 78e2ae741240
children 24d4cd032da5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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) */