From 9d244bfbe0e4cfc0fbe7d57a65810951be665d0d Mon Sep 17 00:00:00 2001
From: Andrea Zagli <azagli@libero.it>
Date: Mon, 8 Jul 2019 16:30:32 +0200
Subject: [PATCH] Builded the tree of headers.

---
 src/parser.c     | 94 +++++++++++++++++++++++++++++++++++++++++++++---
 tests/simple.org |  2 ++
 2 files changed, 92 insertions(+), 4 deletions(-)

diff --git a/src/parser.c b/src/parser.c
index 8f8b428..74307d4 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -21,6 +21,7 @@
 #endif
 
 #include <glib/gi18n-lib.h>
+#include <glib/gprintf.h>
 
 #include "parser.h"
 
@@ -49,7 +50,13 @@ struct _ZakGorgParser
 		GNode *nodes;
 	};
 
-G_DEFINE_TYPE (ZakGorgParser, zak_gorg_parser, ZAK_GORG_TYPE_PARSER)
+G_DEFINE_TYPE (ZakGorgParser, zak_gorg_parser, G_TYPE_OBJECT)
+
+typedef struct
+	{
+		guint level;
+		gchar *str;
+	} Header;
 
 static void
 zak_gorg_parser_class_init (ZakGorgParserClass *klass)
@@ -76,12 +83,17 @@ zak_gorg_parser_init (ZakGorgParser *zak_gorg_parser)
 ZakGorgParser
 *zak_gorg_parser_new_gfile (GFile *gfile)
 {
+	Header *root;
+
 	ZakGorgParser *zak_gorg_parser;
 
 	zak_gorg_parser = g_object_new (ZAK_GORG_TYPE_PARSER, NULL);
-	g_warning("gfile");
 
-	zak_gorg_parser->nodes = NULL;
+	root = g_new0 (Header, 1);
+	root->level = 0;
+	root->str = "The root";
+
+	zak_gorg_parser->nodes = g_node_new (root);
 	zak_gorg_parser->gfile = gfile;
 
 	zak_gorg_parser_parse (zak_gorg_parser);
@@ -160,6 +172,15 @@ zak_gorg_parser_finalize (GObject *gobject)
 	parent_class->finalize (gobject);
 }
 
+static gboolean
+traverse_func (GNode *node,
+               gpointer data)
+{
+	g_printf ("%d: %s\n", g_node_depth (node), ((Header *)node->data)->str);
+
+	return FALSE;
+}
+
 static void
 zak_gorg_parser_parse (ZakGorgParser *zak_gorg_parser)
 {
@@ -171,6 +192,16 @@ zak_gorg_parser_parse (ZakGorgParser *zak_gorg_parser)
 
 	void *buffer;
 
+	guint i;
+	guint l;
+	guint start;
+	guint line;
+
+	GNode *root;
+	GNode *cur;
+
+	gchar *strline;
+
 	error = NULL;
 	giostream = g_file_read (zak_gorg_parser->gfile, FALSE, &error);
 	if (giostream == NULL
@@ -205,7 +236,62 @@ zak_gorg_parser_parse (ZakGorgParser *zak_gorg_parser)
 			return;
 		}
 
-	g_warning ("BUFFER %s", buffer);
+	g_warning ("BUFFER\n%s", buffer);
+
+	gchar *str = buffer;
+
+	root = g_node_get_root (zak_gorg_parser->nodes);
+
+	start = 0;
+	line = 0;
+	cur = root;
+	for (i = 0; i < size; i++)
+		{
+			if (str[i] == '\n')
+				{
+					line++;
+					strline = g_strndup (buffer + start, i - start);
+					g_printf ("%d: %s\n", line, strline);
+					start = i + 1;
+
+					Header *h = g_new0 (Header, 1);
+					for (l = 0; l < i - start; l++)
+						{
+							if (strline[l] == ' ')
+								{
+									h->level = l - 1;
+									break;
+								}
+						}
+					h->str = g_strdup (strline);
+
+					GNode *n = g_node_new (h);
+
+					if (h->level == 0)
+						{
+							cur = root;
+						}
+					else
+						{
+							Header *hcur = (Header *)cur->data;
+							if (h->level == hcur->level)
+								{
+									cur = cur->parent;
+								}
+						}
+					g_node_append (cur, n);
+					cur = n;
+				}
+		}
+
+	g_printf ("\n");
+	g_message ("Traversing");
+	g_node_traverse (zak_gorg_parser->nodes,
+	                 G_PRE_ORDER,
+	                 G_TRAVERSE_ALL,
+	                 -1,
+	                 traverse_func,
+	                 NULL);
 
 	g_free (buffer);
 	g_object_unref (ginfo);
diff --git a/tests/simple.org b/tests/simple.org
index 7d8f3b5..e56df32 100644
--- a/tests/simple.org
+++ b/tests/simple.org
@@ -2,5 +2,7 @@
 ** sub 1 first line
 ** sub 2 first line
 * second line
+*** sub 1 sub 1 second line (without parent)
 * third line
 ** sub 1 third line
+*** sub 1 sub 1 third line
-- 
2.49.0