New tmux parser and test program.

parser-test/main.c

@@ -0,0 +1,59 @@
+/*
+ * Standalone driver for the cmd-parse.y AST parser. Reads a config/command
+ * file (argument, or stdin) and prints both forms: the debug AST dump via
+ * cmd_parse_log (to stderr) and the normalized form via cmd_parse_print (to
+ * stdout).
+ *
+ * Usage: parsetest [file]
+ */
+
+#include <locale.h>
+
+#include "tmux.h"
+#include "tmux-parser.h"
+
+int
+main(int argc, char **argv)
+{
+	struct cmd_parse_input	 pi;
+	struct cmd_parse_tree	*tree;
+	FILE			*f = stdin;
+	char			*cause = NULL, *out;
+
+	/* As tmux does at startup, so \u/\U escapes can be encoded. */
+	setlocale(LC_CTYPE, "");
+
+	memset(&pi, 0, sizeof pi);
+	pi.line = 1;
+	if (getenv("ONEGROUP") != NULL)
+		pi.flags |= CMD_PARSE_ONEGROUP;
+	if (argc > 1) {
+		pi.file = argv[1];
+		if ((f = fopen(argv[1], "r")) == NULL) {
+			perror(argv[1]);
+			return (1);
+		}
+	}
+
+	tree = cmd_parse_from_file(f, &pi, &cause);
+	if (f != stdin)
+		fclose(f);
+
+	if (tree == NULL) {
+		fprintf(stderr, "parse error: %s\n",
+		    cause != NULL ? cause : "unknown");
+		free(cause);
+		return (1);
+	}
+
+	fprintf(stdout, "=== AST (stderr) ===\n");
+	fflush(stdout);
+	cmd_parse_log(tree);
+
+	out = cmd_parse_print(tree);
+	fprintf(stdout, "=== NORMALIZED ===\n%s\n", out);
+	free(out);
+
+	cmd_parse_free(tree);
+	return (0);
+}