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/* This file is part of "reprepro"
* Copyright (C) 2003 Bernhard R. Link
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include <config.h>
#include <errno.h>
#include <assert.h>
#include <string.h>
#include <strings.h>
#include <stdio.h>
#include <malloc.h>
#include "error.h"
#include "strlist.h"
#include "guesscomponent.h"
extern int verbose;
/* Guess which component to use:
* - if the user gave one, use that one.
* - if the section is a componentname, use this one
* - if the section starts with a componentname/, use this one
* - if the section ends with a /componentname, use this one
* - if the section/ is the start of a componentname, use this one
* - use the first component in the list
*/
retvalue guess_component(const char *codename,const struct strlist *components,
const char *package,const char *section,
const char *givencomponent,char **guess) {
int i;
size_t section_len;
#define RETURNTHIS(comp) { \
char *c = strdup(comp); \
if( c == NULL ) \
return RET_ERROR_OOM; \
*guess = c; \
return RET_OK; \
}
if( givencomponent != NULL ) {
if( !strlist_in(components,givencomponent) ) {
(void)fprintf(stderr,"Could not find '%s' in components of '%s': ",
givencomponent,codename);
(void)strlist_fprint(stderr,components);
(void)fputs("'\n",stderr);
return RET_ERROR;
}
RETURNTHIS(givencomponent);
}
if( section == NULL ) {
fprintf(stderr,"Found no section for '%s', so I cannot guess the component to put it in!\n",package);
return RET_ERROR;
}
if( components->count <= 0 ) {
fprintf(stderr,"I do not find any components in '%s', so there is no chance I cannot even take one by guessing!\n",codename);
return RET_ERROR;
}
section_len = strlen(section);
for( i = 0 ; i < components->count ; i++ ) {
const char *component = components->values[i];
if( strcmp(section,component) == 0 )
RETURNTHIS(component);
}
for( i = 0 ; i < components->count ; i++ ) {
const char *component = components->values[i];
size_t len = strlen(component);
if( len<section_len && section[len] == '/' &&
strncmp(section,component,len) == 0 )
RETURNTHIS(component);
}
for( i = 0 ; i < components->count ; i++ ) {
const char *component = components->values[i];
size_t len = strlen(component);
if( len<section_len && section[section_len-len-1] == '/' &&
strncmp(section+section_len-len,component,len) == 0 )
RETURNTHIS(component);
}
for( i = 0 ; i < components->count ; i++ ) {
const char *component = components->values[i];
if( strncmp(section,component,section_len) == 0 && component[section_len] == '/' )
RETURNTHIS(component);
}
RETURNTHIS(components->values[0]);
#undef RETURNTHIS
}
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