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/* ISC license. */
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <skalibs/bytestr.h>
#include <skalibs/env.h>
#include <skalibs/direntry.h>
#include <skalibs/stralloc.h>
#include <skalibs/djbunix.h>
#include "envdir-internal.h"
#define MAXVARSIZE 4095
int envdir_internal_clamp (char const *path, stralloc *modifs, unsigned int options, char nullis)
{
char buf[MAXVARSIZE + 1] ;
unsigned int n = 0 ;
size_t pathlen = strlen(path) ;
size_t modifbase = modifs->len ;
int wasnull = !modifs->s ;
DIR *dir = opendir(path) ;
if (!dir) return -1 ;
for (;;)
{
direntry *d ;
size_t len ;
ssize_t r ;
errno = 0 ;
d = readdir(dir) ;
if (!d) break ;
if (d->d_name[0] == '.') continue ;
len = strlen(d->d_name) ;
if (str_chr(d->d_name, '=') < len) continue ;
{
char tmp[pathlen + len + 2] ;
memcpy(tmp, path, pathlen) ;
tmp[pathlen] = '/' ;
memcpy(tmp + pathlen + 1, d->d_name, len + 1) ;
r = openreadnclose(tmp, buf, MAXVARSIZE) ;
}
if (r < 0)
{
if (errno == ENOENT) errno = EIDRM ;
goto err ;
}
else if (r > 0)
{
if (options & SKALIBS_ENVDIR_VERBATIM)
{
if (!(options & SKALIBS_ENVDIR_NOCHOMP) && (buf[r-1] == '\n')) r-- ;
}
else
{
r = byte_chr(buf, r, '\n') ;
if (!(options & SKALIBS_ENVDIR_NOCHOMP))
{
while (r--) if ((buf[r] != ' ') && (buf[r] != '\t') && (buf[r] != '\r')) break ;
r++ ;
}
}
{
size_t i = 0 ;
for (; i < (size_t)r ; i++) if (!buf[i]) buf[i] = nullis ;
}
buf[r++] = 0 ;
if (!env_addmodif(modifs, d->d_name, buf)) goto err ;
}
else if (!env_addmodif(modifs, d->d_name, 0)) goto err ;
n++ ;
}
if (errno) goto err ;
dir_close(dir) ;
return n ;
err:
{
int e = errno ;
dir_close(dir) ;
if (wasnull) stralloc_free(modifs) ; else modifs->len = modifbase ;
errno = e ;
return -1 ;
}
}
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