Adding json patch

patch/json.c

@@ -0,0 +1,73 @@
+#include <jansson.h>
+
+static size_t items_sz = 0;
+static size_t items_ln = 0;
+static json_t *json = NULL;
+
+static struct item *
+itemnew(void)
+{
+	if (items_ln + 1 >= (items_sz / sizeof *items))
+		if (!(items = realloc(items, (items_sz += BUFSIZ))))
+			die("cannot realloc %u bytes:", items_sz);
+	return &items[items_ln++];
+}
+
+static void
+readjson(const char *path)
+{
+	json_error_t jerr;
+
+	if (!(json = json_load_file(path, 0, &jerr)))
+		die("%s @ line: %i - %s", jerr.text, jerr.line, path);
+}
+
+static void
+listjson(json_t *obj)
+{
+	void *iter;
+	unsigned imax = 0;
+	unsigned tmpmax = 0;
+	struct item *item;
+
+	items_ln = 0;
+	iter = json_object_iter(obj);
+	while (iter) {
+		item = itemnew();
+		item->text = (char*) json_object_iter_key(iter);
+		item->json = json_object_iter_value(iter);
+		#if !MULTI_SELECTION_PATCH
+		item->out = 0;
+		#endif // MULTI_SELECTION_PATCH
+		drw_font_getexts(drw->fonts, item->text, strlen(item->text),
+				 &tmpmax, NULL);
+		if (tmpmax > inputw) {
+			inputw = tmpmax;
+			imax = items_ln - 1;
+		}
+		iter = json_object_iter_next(obj, iter);
+	}
+	if (items)
+		items[items_ln].text = NULL;
+	inputw = items ? TEXTW(items[imax].text) : 0;
+	lines = MIN(lines, items_ln - 1);
+}
+
+static int
+printjsonssel(unsigned int state)
+{
+	if (sel && sel->json) {
+		if (json_is_object(sel->json)) {
+			listjson(sel->json);
+			text[0] = '\0';
+			match();
+			drawmenu();
+			return 0;
+		} else {
+			puts(json_string_value(sel->json));
+		}
+	} else {
+		puts((sel && !(state & ShiftMask)) ? sel->text : text);
+	}
+	return 1;
+}

patch/json.h

@@ -0,0 +1 @@
+static void listjson(json_t *obj);