mirror of
https://github.com/AuxXxilium/eudev.git
synced 2024-12-21 14:12:14 +07:00
437 lines
8.8 KiB
C
437 lines
8.8 KiB
C
/*-*- Mode: C; c-basic-offset: 8 -*-*/
|
|
|
|
/***
|
|
This file is part of systemd.
|
|
|
|
Copyright 2010 Lennart Poettering
|
|
|
|
systemd is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
***/
|
|
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
#include "util.h"
|
|
#include "strv.h"
|
|
|
|
char *strv_find(char **l, const char *name) {
|
|
char **i;
|
|
|
|
assert(l);
|
|
assert(name);
|
|
|
|
STRV_FOREACH(i, l)
|
|
if (streq(*i, name))
|
|
return *i;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void strv_free(char **l) {
|
|
char **k;
|
|
|
|
if (!l)
|
|
return;
|
|
|
|
for (k = l; *k; k++)
|
|
free(*k);
|
|
|
|
free(l);
|
|
}
|
|
|
|
char **strv_copy(char **l) {
|
|
char **r, **k;
|
|
|
|
if (!(r = new(char*, strv_length(l)+1)))
|
|
return NULL;
|
|
|
|
for (k = r; *l; k++, l++)
|
|
if (!(*k = strdup(*l)))
|
|
goto fail;
|
|
|
|
*k = NULL;
|
|
return r;
|
|
|
|
fail:
|
|
for (k--, l--; k >= r; k--, l--)
|
|
free(*k);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
unsigned strv_length(char **l) {
|
|
unsigned n = 0;
|
|
|
|
if (!l)
|
|
return 0;
|
|
|
|
for (; *l; l++)
|
|
n++;
|
|
|
|
return n;
|
|
}
|
|
|
|
char **strv_new_ap(const char *x, va_list ap) {
|
|
const char *s;
|
|
char **a;
|
|
unsigned n = 0, i = 0;
|
|
va_list aq;
|
|
|
|
|
|
if (x) {
|
|
n = 1;
|
|
|
|
va_copy(aq, ap);
|
|
while (va_arg(aq, const char*))
|
|
n++;
|
|
va_end(aq);
|
|
}
|
|
|
|
if (!(a = new(char*, n+1)))
|
|
return NULL;
|
|
|
|
if (x) {
|
|
if (!(a[i] = strdup(x))) {
|
|
free(a);
|
|
return NULL;
|
|
}
|
|
|
|
i++;
|
|
|
|
while ((s = va_arg(ap, const char*))) {
|
|
if (!(a[i] = strdup(s)))
|
|
goto fail;
|
|
|
|
i++;
|
|
}
|
|
}
|
|
|
|
a[i] = NULL;
|
|
|
|
return a;
|
|
|
|
fail:
|
|
|
|
for (; i > 0; i--)
|
|
if (a[i-1])
|
|
free(a[i-1]);
|
|
|
|
free(a);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
char **strv_new(const char *x, ...) {
|
|
char **r;
|
|
va_list ap;
|
|
|
|
va_start(ap, x);
|
|
r = strv_new_ap(x, ap);
|
|
va_end(ap);
|
|
|
|
return r;
|
|
}
|
|
|
|
char **strv_merge(char **a, char **b) {
|
|
char **r, **k;
|
|
|
|
if (!a)
|
|
return strv_copy(b);
|
|
|
|
if (!b)
|
|
return strv_copy(a);
|
|
|
|
if (!(r = new(char*, strv_length(a)+strv_length(b)+1)))
|
|
return NULL;
|
|
|
|
for (k = r; *a; k++, a++)
|
|
if (!(*k = strdup(*a)))
|
|
goto fail;
|
|
for (; *b; k++, b++)
|
|
if (!(*k = strdup(*b)))
|
|
goto fail;
|
|
|
|
*k = NULL;
|
|
return r;
|
|
|
|
fail:
|
|
for (k--; k >= r; k--)
|
|
free(*k);
|
|
|
|
free(r);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
char **strv_merge_concat(char **a, char **b, const char *suffix) {
|
|
char **r, **k;
|
|
|
|
/* Like strv_merge(), but appends suffix to all strings in b, before adding */
|
|
|
|
if (!b)
|
|
return strv_copy(a);
|
|
|
|
if (!(r = new(char*, strv_length(a)+strv_length(b)+1)))
|
|
return NULL;
|
|
|
|
for (k = r; *a; k++, a++)
|
|
if (!(*k = strdup(*a)))
|
|
goto fail;
|
|
for (; *b; k++, b++)
|
|
if (!(*k = strappend(*b, suffix)))
|
|
goto fail;
|
|
|
|
*k = NULL;
|
|
return r;
|
|
|
|
fail:
|
|
for (k--; k >= r; k--)
|
|
free(*k);
|
|
|
|
free(r);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
char **strv_split(const char *s, const char *separator) {
|
|
char *state;
|
|
char *w;
|
|
size_t l;
|
|
unsigned n, i;
|
|
char **r;
|
|
|
|
assert(s);
|
|
|
|
n = 0;
|
|
FOREACH_WORD_SEPARATOR(w, l, s, separator, state)
|
|
n++;
|
|
|
|
if (!(r = new(char*, n+1)))
|
|
return NULL;
|
|
|
|
i = 0;
|
|
FOREACH_WORD_SEPARATOR(w, l, s, separator, state)
|
|
if (!(r[i++] = strndup(w, l))) {
|
|
strv_free(r);
|
|
return NULL;
|
|
}
|
|
|
|
r[i] = NULL;
|
|
return r;
|
|
}
|
|
|
|
char **strv_split_quoted(const char *s) {
|
|
char *state;
|
|
char *w;
|
|
size_t l;
|
|
unsigned n, i;
|
|
char **r;
|
|
|
|
assert(s);
|
|
|
|
n = 0;
|
|
FOREACH_WORD_QUOTED(w, l, s, state)
|
|
n++;
|
|
|
|
if (!(r = new(char*, n+1)))
|
|
return NULL;
|
|
|
|
i = 0;
|
|
FOREACH_WORD_QUOTED(w, l, s, state)
|
|
if (!(r[i++] = strndup(w, l))) {
|
|
strv_free(r);
|
|
return NULL;
|
|
}
|
|
|
|
r[i] = NULL;
|
|
return r;
|
|
}
|
|
|
|
char *strv_join(char **l, const char *separator) {
|
|
char *r, *e;
|
|
char **s;
|
|
size_t n, k;
|
|
|
|
if (!separator)
|
|
separator = " ";
|
|
|
|
k = strlen(separator);
|
|
|
|
n = 0;
|
|
STRV_FOREACH(s, l) {
|
|
if (n != 0)
|
|
n += k;
|
|
n += strlen(*s);
|
|
}
|
|
|
|
if (!(r = new(char, n+1)))
|
|
return NULL;
|
|
|
|
e = r;
|
|
STRV_FOREACH(s, l) {
|
|
if (e != r)
|
|
e = stpcpy(e, separator);
|
|
|
|
e = stpcpy(e, *s);
|
|
}
|
|
|
|
*e = 0;
|
|
|
|
return r;
|
|
}
|
|
|
|
char **strv_append(char **l, const char *s) {
|
|
char **r, **k;
|
|
|
|
if (!l)
|
|
return strv_new(s, NULL);
|
|
|
|
if (!s)
|
|
return strv_copy(l);
|
|
|
|
if (!(r = new(char*, strv_length(l)+2)))
|
|
return NULL;
|
|
|
|
for (k = r; *l; k++, l++)
|
|
if (!(*k = strdup(*l)))
|
|
goto fail;
|
|
|
|
if (!(*(k++) = strdup(s)))
|
|
goto fail;
|
|
|
|
*k = NULL;
|
|
return r;
|
|
|
|
fail:
|
|
for (k--; k >= r; k--)
|
|
free(*k);
|
|
|
|
free(r);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
char **strv_uniq(char **l) {
|
|
char **i;
|
|
|
|
/* Drops duplicate entries. The first identical string will be
|
|
* kept, the others dropped */
|
|
|
|
STRV_FOREACH(i, l)
|
|
strv_remove(i+1, *i);
|
|
|
|
return l;
|
|
}
|
|
|
|
char **strv_remove(char **l, const char *s) {
|
|
char **f, **t;
|
|
|
|
if (!l)
|
|
return NULL;
|
|
|
|
/* Drops every occurence of s in the string list */
|
|
|
|
for (f = t = l; *f; f++) {
|
|
|
|
if (streq(*f, s)) {
|
|
free(*f);
|
|
continue;
|
|
}
|
|
|
|
*(t++) = *f;
|
|
}
|
|
|
|
*t = NULL;
|
|
return l;
|
|
}
|
|
|
|
static int env_append(char **r, char ***k, char **a) {
|
|
assert(r);
|
|
assert(k);
|
|
assert(a);
|
|
|
|
/* Add the entries of a to *k unless they already exist in *r
|
|
* in which case they are overriden instead. This assumes
|
|
* there is enough space in the r */
|
|
|
|
for (; *a; a++) {
|
|
char **j;
|
|
size_t n = strcspn(*a, "=") + 1;
|
|
|
|
for (j = r; j < *k; j++)
|
|
if (strncmp(*j, *a, n) == 0)
|
|
break;
|
|
|
|
if (j >= *k)
|
|
(*k)++;
|
|
else
|
|
free(*j);
|
|
|
|
if (!(*j = strdup(*a)))
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
char **strv_env_merge(char **x, ...) {
|
|
size_t n = 0;
|
|
char **l, **k, **r;
|
|
va_list ap;
|
|
|
|
/* Merges an arbitrary number of environment sets */
|
|
|
|
if (x) {
|
|
n += strv_length(x);
|
|
|
|
va_start(ap, x);
|
|
while ((l = va_arg(ap, char**)))
|
|
n += strv_length(l);
|
|
va_end(ap);
|
|
}
|
|
|
|
|
|
if (!(r = new(char*, n+1)))
|
|
return NULL;
|
|
|
|
k = r;
|
|
|
|
if (x) {
|
|
if (env_append(r, &k, x) < 0)
|
|
goto fail;
|
|
|
|
va_start(ap, x);
|
|
while ((l = va_arg(ap, char**)))
|
|
if (env_append(r, &k, l) < 0)
|
|
goto fail;
|
|
va_end(ap);
|
|
}
|
|
|
|
*k = NULL;
|
|
|
|
return r;
|
|
|
|
fail:
|
|
for (k--; k >= r; k--)
|
|
free(*k);
|
|
|
|
free(r);
|
|
|
|
return NULL;
|
|
}
|