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/* grecs - Gray's Extensible Configuration System
Copyright (C) 2007-2016 Sergey Poznyakoff
Grecs 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.
Grecs 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 Grecs. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include "grecs.h"
static void
usage(const char *arg, FILE *fp, int code)
{
fprintf(fp,
"usage: %s [-h] [-locus] [-delim=char] [-nodesc] [-nopath] [-reduce] [-match] [-root=path] file path\n",
arg);
exit(code);
}
int
set_parser(const char *arg)
{
grecs_parser_t p = grecs_get_parser_by_type(arg);
if (p) {
grecs_parser_fun = p;
return 0;
}
return 1;
}
int
main(int argc, char **argv)
{
char *progname = argv[0];
char *path = NULL;
char *file = NULL;
struct grecs_node *tree, *root, *node;
int flags = GRECS_NODE_FLAG_DEFAULT;
int rc = 2;
int reduce = 0;
int match = 0;
char *root_path = NULL;
while (--argc) {
char *arg = *++argv;
if (strcmp(arg, "-locus") == 0)
flags |= GRECS_NODE_FLAG_LOCUS;
else if (strncmp(arg, "-delim=", 7) == 0)
flags |= arg[7];
else if (strcmp(arg, "-reduce") == 0)
reduce = 1;
else if (strcmp(arg, "-match") == 0)
match = 1;
else if (strcmp(arg, "-nodesc") == 0)
flags &= ~GRECS_NODE_FLAG_DESCEND;
else if (strcmp(arg, "-nopath") == 0)
flags &= ~GRECS_NODE_FLAG_PATH;
else if (strncmp(arg, "-type=", 6) == 0) {
if (set_parser(arg + 6))
usage(progname, stderr, 1);
} else if (strncmp(arg, "-root=", 6) == 0)
root_path = arg + 6;
else if (strcmp(arg, "-h") == 0)
usage(progname, stdout, 0);
else if (arg[0] == '-')
usage(progname, stderr, 1);
else if (file) {
if (path)
usage(progname, stderr, 1);
else
path = arg;
} else
file = arg;
}
if (!file || !path || argc)
usage(progname, stderr, 1);
tree = grecs_parse(file);
if (!tree)
exit(1);
if (reduce)
grecs_tree_reduce(tree, NULL, 0);
if (root_path) {
root = grecs_find_node(tree, root_path);
if (!root) {
fprintf(stderr, "%s: node %s not found\n",
progname, root_path);
exit(1);
}
} else
root = tree;
if (match) {
grecs_match_buf_t match_buf;
for (node = grecs_match_first(root, path, &match_buf);
node;
node = grecs_match_next(match_buf)) {
rc = 0;
grecs_print_node(node, flags, stdout);
fputc('\n', stdout);
}
grecs_match_buf_free(match_buf);
} else {
for (node = root; node; node = node->next) {
node = grecs_find_node(node, path);
if (!node)
break;
rc = 0;
grecs_print_node(node, flags, stdout);
fputc('\n', stdout);
}
}
grecs_tree_free(tree);
exit(rc);
}
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