diff options
Diffstat (limited to 'src/shared/replace-var.c')
-rw-r--r-- | src/shared/replace-var.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/src/shared/replace-var.c b/src/shared/replace-var.c deleted file mode 100644 index e11c57a43d..0000000000 --- a/src/shared/replace-var.c +++ /dev/null @@ -1,110 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2012 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <string.h> - -#include "macro.h" -#include "util.h" -#include "replace-var.h" - -/* - * Generic infrastructure for replacing @FOO@ style variables in - * strings. Will call a callback for each replacement. - */ - -static int get_variable(const char *b, char **r) { - size_t k; - char *t; - - assert(b); - assert(r); - - if (*b != '@') - return 0; - - k = strspn(b + 1, "ABCDEFGHIJKLMNOPQRSTUVWXYZ_"); - if (k <= 0 || b[k+1] != '@') - return 0; - - t = strndup(b + 1, k); - if (!t) - return -ENOMEM; - - *r = t; - return 1; -} - -char *replace_var(const char *text, char *(*lookup)(const char *variable, void*userdata), void *userdata) { - char *r, *t; - const char *f; - size_t l; - - assert(text); - assert(lookup); - - l = strlen(text); - r = new(char, l+1); - if (!r) - return NULL; - - f = text; - t = r; - while (*f) { - _cleanup_free_ char *v = NULL, *n = NULL; - char *a; - int k; - size_t skip, d, nl; - - k = get_variable(f, &v); - if (k < 0) - goto oom; - if (k == 0) { - *(t++) = *(f++); - continue; - } - - n = lookup(v, userdata); - if (!n) - goto oom; - - skip = strlen(v) + 2; - - d = t - r; - nl = l - skip + strlen(n); - a = realloc(r, nl + 1); - if (!a) - goto oom; - - l = nl; - r = a; - t = r + d; - - t = stpcpy(t, n); - f += skip; - } - - *t = 0; - return r; - -oom: - free(r); - return NULL; -} |