Mercurial > noffle
annotate src/itemlist.c @ 89:f17eb481c126 noffle
[svn] Added post-locally, updated posting code
author | bears |
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date | Thu, 18 May 2000 13:19:32 +0100 |
parents | 78e2ae741240 |
children | 24d4cd032da5 |
rev | line source |
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1 /* |
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2 itemlist.c |
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3 |
72 | 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 |
72 | 19 #if defined(ITEMLIST_TEST) |
20 #define Log_err printf | |
21 #endif | |
22 | |
23 #define SEP_CHAR '\1' /* Replace all separators with this */ | |
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 { |
72 | 74 if ( isSep ) |
75 p[ 0 ] = SEP_CHAR; | |
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 { |
72 | 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 |
72 | 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 |
72 | 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 } |
72 | 129 |
130 #if defined(ITEMLIST_TEST) | |
131 | |
132 /* Test code borrowed from wildmat.c. Yep, still uses gets(). */ | |
133 extern char *gets(); | |
134 | |
135 int | |
136 main() | |
137 { | |
138 Str line; | |
139 Str seps; | |
140 ItemList * itl; | |
141 int count; | |
142 const char *item; | |
143 | |
144 printf( "Itemlist tester. Enter seperators, then strings to test.\n" ); | |
145 printf( "A blank line gets prompts for new seperators; blank separators\n" ); | |
146 printf( "exits the program.\n" ); | |
147 | |
148 for ( ; ; ) | |
149 { | |
150 printf( "\nEnter seperators: " ); | |
151 (void) fflush( stdout ); | |
152 if ( gets( seps ) == NULL || seps[0] == '\0' ) | |
153 break; | |
154 for ( ; ; ) | |
155 { | |
156 printf( "Enter line: " ); | |
157 (void) fflush( stdout ); | |
158 if ( gets( line ) == NULL ) | |
159 exit( 0 ); | |
160 if ( line[0] == '\0' ) | |
161 break; | |
162 itl = new_Itl( line, seps ); | |
163 printf( "%d items on list\n", Itl_count( itl ) ); | |
164 count = 0; | |
165 for ( item = Itl_first( itl ); | |
166 item != NULL; | |
167 item = Itl_next( itl ) ) | |
168 printf( " Item %d is '%s'\n", ++count, item ); | |
169 if ( count != Itl_count( itl ) ) | |
170 printf( "*** Warning - counts don't match ***\n" ); | |
171 del_Itl( itl ); | |
172 } | |
173 } | |
174 | |
175 exit(0); | |
176 /* NOTREACHED */ | |
177 } | |
178 #endif /* defined(TEST) */ |