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/* ISC license. */
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <skalibs/bytestr.h>
#include <skalibs/buffer.h>
#include <skalibs/env.h>
#include <skalibs/direntry.h>
#include <skalibs/stralloc.h>
#include <skalibs/djbunix.h>
#include <skalibs/skamisc.h>
#include "envdir-internal.h"
#define N 4096
int envdir_internal_noclamp (char const *path, stralloc *modifs, unsigned int options, char nullis)
{
unsigned int n = 0 ;
size_t pathlen = strlen(path) ;
size_t modifbase = modifs->len ;
int wasnull = !modifs->s ;
int fd ;
DIR *dir = opendir(path) ;
if (!dir) return -1 ;
for (;;)
{
direntry *d ;
size_t len, pos ;
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) ;
fd = openc_readb(tmp) ;
}
if (fd < 0)
{
if (errno == ENOENT) errno = EIDRM ;
goto err ;
}
if (!stralloc_catb(modifs, d->d_name, len) || !stralloc_catb(modifs, "=", 1)) goto errfd ;
pos = modifs->len ;
if (options & SKALIBS_ENVDIR_VERBATIM)
{
if (!slurp(modifs, fd)) goto errfd ;
if (modifs->len == pos) modifs->len = pos - 1 ;
if (!(options & SKALIBS_ENVDIR_NOCHOMP) && (modifs->s[modifs->len - 1] == '\n')) modifs->len-- ;
}
else
{
int r ;
char buf[N] ;
buffer b = BUFFER_INIT(&buffer_read, fd, buf, N) ;
r = skagetln(&b, modifs, '\n') ;
if (r == -1)
{
if (errno != EPIPE) goto errfd ;
if (!(options & SKALIBS_ENVDIR_NOCHOMP)) modifs->len = pos ;
if (!stralloc_catb(modifs, "\n", 1)) goto errfd ;
}
if (!r) modifs->len = pos - 1 ;
else
{
size_t i = pos ;
if (!(options & SKALIBS_ENVDIR_NOCHOMP))
{
while (modifs->len-- > pos)
{
char c = modifs->s[modifs->len] ;
if ((c != ' ') && (c != '\t') && (c != '\r')) break ;
}
modifs->len++ ;
for (; i < modifs->len ; i++) if (!modifs->s[i]) modifs->s[i] = nullis ;
}
}
}
fd_close(fd) ;
if (!stralloc_0(modifs)) goto err ;
n++ ;
}
if (errno) goto err ;
dir_close(dir) ;
return n ;
errfd:
fd_close(fd) ;
err:
{
int e = errno ;
dir_close(dir) ;
if (wasnull) stralloc_free(modifs) ; else modifs->len = modifbase ;
errno = e ;
return -1 ;
}
}
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