+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- 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(name);
-
- STRV_FOREACH(i, l)
- if (streq(*i, name))
- return *i;
-
- return NULL;
-}
-
-char *strv_find_prefix(char **l, const char *name) {
- char **i;
-
- assert(name);
-
- STRV_FOREACH(i, l)
- if (startswith(*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;
-
- k = r = new(char*, strv_length(l)+1);
- if (!k)
- return NULL;
-
- if (l)
- for (; *l; k++, l++)
- if (!(*k = strdup(*l)))
- goto fail;
-
- *k = NULL;
- return r;
-
-fail:
- for (k--; k >= r; k--)
- free(*k);
-
- free(r);
-
- 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);
-
- r = new(char*, strv_length(a) + strv_length(b) + 1);
- if (!r)
- return NULL;
-
- k = r;
- if (a)
- for (; *a; k++, a++) {
- *k = strdup(*a);
- if (!*k)
- goto fail;
- }
-
- for (; *b; k++, b++) {
- *k = strappend(*b, suffix);
- if (!*k)
- 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++] = cunescape_length(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);
-
- r = new(char*, strv_length(l)+2);
- if (!r)
- 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;
-
- assert(s);
-
- /* Drops every occurrence of s in the string list, edits
- * in-place. */
-
- 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);
-
- if (!a)
- return 0;
-
- /* Add the entries of a to *k unless they already exist in *r
- * in which case they are overridden instead. This assumes
- * there is enough space in the r array. */
-
- for (; *a; a++) {
- char **j;
- size_t n;
-
- n = strcspn(*a, "=");
-
- if ((*a)[n] == '=')
- n++;
-
- 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(unsigned n_lists, ...) {
- size_t n = 0;
- char **l, **k, **r;
- va_list ap;
- unsigned i;
-
- /* Merges an arbitrary number of environment sets */
-
- va_start(ap, n_lists);
- for (i = 0; i < n_lists; i++) {
- l = va_arg(ap, char**);
- n += strv_length(l);
- }
- va_end(ap);
-
- if (!(r = new(char*, n+1)))
- return NULL;
-
- k = r;
-
- va_start(ap, n_lists);
- for (i = 0; i < n_lists; i++) {
- l = va_arg(ap, char**);
- if (env_append(r, &k, l) < 0)
- goto fail;
- }
- va_end(ap);
-
- *k = NULL;
-
- return r;
-
-fail:
- va_end(ap);
-
- for (k--; k >= r; k--)
- free(*k);
-
- free(r);
-
- return NULL;
-}
-
-static bool env_match(const char *t, const char *pattern) {
- assert(t);
- assert(pattern);
-
- /* pattern a matches string a
- * a matches a=
- * a matches a=b
- * a= matches a=
- * a=b matches a=b
- * a= does not match a
- * a=b does not match a=
- * a=b does not match a
- * a=b does not match a=c */
-
- if (streq(t, pattern))
- return true;
-
- if (!strchr(pattern, '=')) {
- size_t l = strlen(pattern);
-
- return strncmp(t, pattern, l) == 0 && t[l] == '=';
- }
-
- return false;
-}
-
-char **strv_env_delete(char **x, unsigned n_lists, ...) {
- size_t n, i = 0;
- char **k, **r;
- va_list ap;
-
- /* Deletes every entry from x that is mentioned in the other
- * string lists */
-
- n = strv_length(x);
-
- r = new(char*, n+1);
- if (!r)
- return NULL;
-
- STRV_FOREACH(k, x) {
- unsigned v;
-
- va_start(ap, n_lists);
- for (v = 0; v < n_lists; v++) {
- char **l, **j;
-
- l = va_arg(ap, char**);
- STRV_FOREACH(j, l)
- if (env_match(*k, *j))
- goto skip;
- }
- va_end(ap);
-
- r[i] = strdup(*k);
- if (!r[i]) {
- strv_free(r);
- return NULL;
- }
-
- i++;
- continue;
-
- skip:
- va_end(ap);
- }
-
- r[i] = NULL;
-
- assert(i <= n);
-
- return r;
-}
-
-char **strv_env_unset(char **l, const char *p) {
-
- char **f, **t;
-
- if (!l)
- return NULL;
-
- assert(p);
-
- /* Drops every occurrence of the env var setting p in the
- * string list. edits in-place. */
-
- for (f = t = l; *f; f++) {
-
- if (env_match(*f, p)) {
- free(*f);
- continue;
- }
-
- *(t++) = *f;
- }
-
- *t = NULL;
- return l;
-}
-
-char **strv_env_set(char **x, const char *p) {
-
- char **k, **r;
- char* m[2] = { (char*) p, NULL };
-
- /* Overrides the env var setting of p, returns a new copy */
-
- if (!(r = new(char*, strv_length(x)+2)))
- return NULL;
-
- k = r;
- if (env_append(r, &k, x) < 0)
- goto fail;
-
- if (env_append(r, &k, m) < 0)
- goto fail;
-
- *k = NULL;
-
- return r;
-
-fail:
- for (k--; k >= r; k--)
- free(*k);
-
- free(r);
-
- return NULL;
-
-}
-
-char *strv_env_get_with_length(char **l, const char *name, size_t k) {
- char **i;
-
- assert(name);
-
- STRV_FOREACH(i, l)
- if (strncmp(*i, name, k) == 0 &&
- (*i)[k] == '=')
- return *i + k + 1;
-
- return NULL;
-}
-
-char *strv_env_get(char **l, const char *name) {
- return strv_env_get_with_length(l, name, strlen(name));
-}
-
-char **strv_env_clean(char **l) {
- char **r, **ret;
-
- for (r = ret = l; *l; l++) {
- const char *equal;
-
- equal = strchr(*l, '=');
-
- if (equal && equal[1] == 0) {
- free(*l);
- continue;
- }
-
- *(r++) = *l;
- }
-
- *r = NULL;
-
- return ret;
-}
-
-char **strv_parse_nulstr(const char *s, size_t l) {
- const char *p;
- unsigned c = 0, i = 0;
- char **v;
-
- assert(s || l <= 0);
-
- if (l <= 0)
- return strv_new(NULL, NULL);
-
- for (p = s; p < s + l; p++)
- if (*p == 0)
- c++;
-
- if (s[l-1] != 0)
- c++;
-
- if (!(v = new0(char*, c+1)))
- return NULL;
-
- p = s;
- while (p < s + l) {
- const char *e;
-
- e = memchr(p, 0, s + l - p);
-
- if (!(v[i++] = strndup(p, e ? e - p : s + l - p))) {
- strv_free(v);
- return NULL;
- }
-
- if (!e)
- break;
-
- p = e + 1;
- }
-
- assert(i == c);
-
- return v;
-}
-
-bool strv_overlap(char **a, char **b) {
- char **i, **j;
-
- STRV_FOREACH(i, a) {
- STRV_FOREACH(j, b) {
- if (streq(*i, *j))
- return true;
- }
- }
-
- return false;
-}
~ianmdlvl / elogind.git / blobdiff