Add graphviz output for TRIE's.

Add simple output in dot format for trie structures. Along with a
slightly updated main which handles a few more command line arguments.

Also updated makefile to generate pdf's from dot files and dot-files
from parse.

1 files changed, 34 insertions, 7 deletions

diff --git a/main.c b/main.c
index 9ee1288b..27385b55 100644
--- a/main.c
+++ b/main.c
@@ -1,25 +1,52 @@
 #include <errno.h>
+#include <stdio.h>
+#include <string.h>
 
 #include "calendar.h"
 #include "macro.h"
 #include "vcal.h"
-#include "stdio.h"
+#include "graphs.h"
+
+typedef struct {
+	int argc;
+	char** argv;
+} arg;
+
+int arg_shift (arg* a) {
+	if (a->argc == 0) return 0;
+
+	++a->argv;
+	return --a->argc;
+
+}
 
 int main (int argc, char* argv[argc]) {
-	if (argc < 2) {
+	arg args = { .argc = argc, .argv = argv };
+
+	if (arg_shift(&args) == 0) {
 		puts("Please give vdir as first argument");
 		exit (1);
 	}
 
 	SNEW(vcalendar, cal);
 
-	read_vcalendar(&cal, argv[1]);
+	read_vcalendar(&cal, args.argv[0]);
+	arg_shift(&args);
 
-	printf("\nParsed calendar file containing [%lu] events\n",
-			cal.n_events);
-	for (size_t i = 0; i < cal.n_events; i++) {
-		printf("%3lu. %s\n", i + 1, get_property(cal.events[i], "SUMMARY")->val.mem);
+	if (args.argc == 0 || strcmp(args.argv[0], "-p") == 0) {
+		printf("\nParsed calendar file containing [%lu] events\n",
+				cal.n_events);
+		for (size_t i = 0; i < cal.n_events; i++) {
+			printf("%3lu. %s\n", i + 1, get_property(cal.events[i], "SUMMARY")->val.mem);
+		}
+	} else if (strcmp(args.argv[0], "-g") == 0) {
+		if (arg_shift(&args) == 0) {
+			create_graph(cal.events[0], "graph.dot");
+		} else {
+			create_graph(cal.events[0], args.argv[0]);
+		}
 	}
 
+
 	free_vcalendar(&cal);
 }