Switch to the two-layer model. Add testsuite.

The configuration file parser creates a syntax tree.  This step
does not require any knowledge about which keywords are allowed.
The user can then either use that tree directly, or post-process
it using parser tables.  The latter approach is equivalent to
previous versions of grecs.

1 files changed, 76 insertions, 0 deletions

diff --git a/tests/gcfpeek.c b/tests/gcfpeek.c
new file mode 100644
index 0000000..360000d
--- /dev/null
+++ b/tests/gcfpeek.c
@@ -0,0 +1,76 @@
+/* grecs - Gray's Extensible Configuration System
+   Copyright (C) 2007-2011 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 "grecs.h"
+
+static void
+usage(const char *arg, FILE *fp, int code)
+{
+	fprintf(fp, "usage: %s [-h] [-locus] [-delim=char] file path\n", arg);
+	exit(code);
+}
+
+int
+main(int argc, char **argv)
+{
+	char *progname = argv[0];
+	char *path = NULL;
+	char *file = NULL;
+	struct grecs_node *tree, *node;
+	int flags = 0;
+	int rc = 2;
+	
+	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, "-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);
+
+	for (node = tree; node; node = node->next) {
+		node = grecs_find_node(node, path);
+		if (!node)
+			break;
+		rc = 0;
+		grecs_format_node(node, flags, stdout);
+		fputc('\n', stdout);
+	}
+	exit(rc);
+}