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/* ISC license. */
#include <string.h>
#include <errno.h>
#include <skalibs/direntry.h>
#include <skalibs/strerr.h>
#include <skalibs/stralloc.h>
#include <skalibs/genalloc.h>
#include <s6-rc/repo.h>
int s6rc_repo_listsub (char const *repo, char const *set, char const *sub, stralloc *sa, genalloc *ga)
{
size_t sabase = sa->len ;
size_t gabase = genalloc_len(size_t, ga) ;
size_t repolen = strlen(repo) ;
size_t setlen = strlen(set) ;
size_t sublen = strlen(sub) ;
int sawasnull = !sa->s ;
int gawasnull = !genalloc_s(size_t, ga) ;
int n = 0 ;
char fn[repolen + setlen + 10 + sublen] ;
memcpy(fn, repo, repolen) ;
memcpy(fn + repolen, "/sources/", 9) ;
memcpy(fn + repolen + 9, set, setlen) ;
memcpy(fn + repolen + 9 + setlen, sub, sublen) ;
DIR *dir = opendir(fn) ;
if (!dir)
{
strerr_warnfu2sys("opendir ", fn) ;
return -1 ;
}
for (;;)
{
direntry *d ;
size_t len ;
errno = 0 ;
d = readdir(dir) ;
if (!d) break ;
if (d->d_name[0] == '.') continue ;
len = strlen(d->d_name) ;
if (!genalloc_catb(size_t, ga, &sa->len, 1)) goto err ;
if (!stralloc_catb(sa, d->d_name, len+1)) goto err ;
n++ ;
}
if (errno) goto err ;
dir_close(dir) ;
return n ;
err:
dir_close(dir) ;
if (gawasnull) genalloc_free(size_t, ga) ;
else genalloc_setlen(size_t, ga, gabase) ;
if (sawasnull) stralloc_free(sa) ;
else sa->len = sabase ;
return -1 ;
}
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