Mercurial > noffle
diff itemlist.c @ 26:526a4c34ee2e noffle
[svn] Applied patch from Jim Hague: support for local groups / new command
line options --create and --cancel.
author | enz |
---|---|
date | Sat, 29 Apr 2000 15:45:56 +0100 |
parents | |
children | 8e972daaeab9 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/itemlist.c Sat Apr 29 15:45:56 2000 +0100 @@ -0,0 +1,123 @@ +/* + itemlist.c + + $Id: itemlist.c 32 2000-04-29 14:45:56Z enz $ +*/ + +#include "itemlist.h" +#include <ctype.h> +#include <string.h> +#include <stdlib.h> +#include "common.h" +#include "log.h" + +struct ItemList +{ + char *list; + char *separators; + char *next; + size_t count; +}; + +/* Make a new item list. */ +ItemList * +new_Itl( const char *list, const char *separators ) +{ + ItemList * res; + char *p; + Bool inItem; + + res = (ItemList *) malloc( sizeof( ItemList ) ); + if ( res == NULL ) + { + Log_err( "Malloc of ItemList failed." ); + exit( EXIT_FAILURE ); + } + + res->list = (char *) malloc( strlen(list) + 2 ); + if ( res->list == NULL ) + { + Log_err( "Malloc of ItemList.list failed." ); + exit( EXIT_FAILURE ); + } + strcpy( res->list, list ); + + if ( ( res->separators = strdup( separators ) ) == NULL ) + { + Log_err( "Malloc of ItemList.separators failed." ); + exit( EXIT_FAILURE ); + } + + res->count = 0; + res->next = res->list; + + /* Separate items into strings and have final zero-length string. */ + for( p = res->list, inItem = FALSE; *p != '\0'; p++ ) + { + Bool isSep = ( strchr( separators, p[ 0 ] ) != NULL ); + + if ( inItem ) + { + if ( isSep ) + { + p[ 0 ] = '\0'; + inItem = FALSE; + res->count++; + } + } + else + { + if ( ! isSep ) + inItem = TRUE; + } + } + if ( inItem ) + res->count++; + p[ 1 ] = '\0'; + return res; +} + +/* Delete an item list. */ +void +del_Itl( ItemList *self ) +{ + if ( self == NULL ) + return; + free( self->list ); + free( self->separators ); + free( self ); +} + +/* Get first item. */ +const char * +Itl_first( ItemList *self ) +{ + self->next = self->list; + return Itl_next( self ); +} + +/* Get next item or NULL. */ +const char * +Itl_next( ItemList *self ) +{ + const char *res = self->next; + + if ( res[ 0 ] == '\0' ) + return NULL; + + while ( strchr( self->separators, res[ 0 ] ) != NULL ) + res++; + + if ( res[ 0 ] == '\0' && res[ 1 ] == '\0' ) + return NULL; + + self->next += strlen( res ) + 1; + return res; +} + +/* Get count of items in list. */ +size_t +Itl_count( const ItemList *self ) +{ + return self->count; +}