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init/lib/libcfg/rdcfg.c
David Oberhollenzer 5cd5f48f76 Add helper library for cron configuration
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
2018-09-17 14:53:19 +02:00

84 lines
2 KiB
C

/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* Copyright (C) 2018 - David Oberhollenzer
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "libcfg.h"
#include <string.h>
#include <stdio.h>
static const cfg_param_t *find_param(rdline_t *rd, const char *name,
const cfg_param_t *params, size_t count)
{
size_t i;
for (i = 0; i < count; ++i) {
if (!strcmp(params[i].key, name))
return params + i;
}
fprintf(stderr, "%s: %zu: unknown keyword '%s'\n",
rd->filename, rd->lineno, name);
return NULL;
}
int rdcfg(void *cfgobj, rdline_t *rd, const cfg_param_t *params, size_t count,
int flags)
{
const cfg_param_t *p;
char *key, *value;
int ret;
while ((ret = rdline(rd)) == 0) {
if (splitkv(rd, &key, &value))
return -1;
p = find_param(rd, key, params, count);
if (p == NULL)
return -1;
if (p->allow_block && *value == '{') {
for (++value; *value == ' '; ++value)
;
if (*value != '\0') {
ret = p->handle(cfgobj, value, rd, flags);
if (ret)
return -1;
}
while ((ret = rdline(rd)) == 0) {
if (strcmp(rd->buffer, "}") == 0)
break;
if (p->handle(cfgobj, rd->buffer, rd, flags))
return -1;
}
if (ret < 0)
return -1;
if (ret > 0)
goto fail_bra;
} else if (p->handle(cfgobj, value, rd, flags)) {
return -1;
}
}
return ret < 0 ? -1 : 0;
fail_bra:
fprintf(stderr, "%s: missing '}' before end-of-file\n", rd->filename);
return -1;
}