Fix memory leak in scanner

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "src/hoedown"]
+	path = src/hoedown
+	url = git@github.com:hoedown/hoedown.git

CMakeLists.txt

@@ -21,9 +21,21 @@ add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/resources.c"
 	COMMENT "Generating resources"
 )
 
+add_custom_command(OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/src/hoedown/libhoedown.a"
+	COMMAND make libhoedown.a
+	WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/src/hoedown"
+	COMMENT "Compiling libhoedown"
+)
+
+ADD_LIBRARY(HOEDOWN STATIC IMPORTED)
+SET_TARGET_PROPERTIES(HOEDOWN PROPERTIES
+    IMPORTED_LOCATION "${CMAKE_CURRENT_SOURCE_DIR}/src/hoedown/libhoedown.a"
+)
+
 aux_source_directory(./src SRC_LIST)
 add_executable(${PROJECT_NAME} ${SRC_LIST})
 target_sources(${PROJECT_NAME} PUBLIC "${CMAKE_CURRENT_BINARY_DIR}/resources.c")
-target_link_libraries(${PROJECT_NAME} ${GTK3_LIBRARIES} ${WEBKIT_LIBRARIES})
+target_sources(${PROJECT_NAME} PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/src/hoedown/libhoedown.a")
+target_link_libraries(${PROJECT_NAME} ${GTK3_LIBRARIES} ${WEBKIT_LIBRARIES} HOEDOWN)
 
 install (TARGETS ${PROJECT_NAME} DESTINATION bin)

demo-workspace/2018-01-26.md

@@ -13,7 +13,7 @@ Renders everything as is. You will see the source code except for the header abo
 The following constructs are supported: *italics*, **bold**, Headings 1 to 4.
 
 ## Full HTML with Images
-As the external md command is invoked and a web browser used to render the content, all markdown syntax supported by the md command is supported.
+Markdown is rendered using [Hoedown](https://github.com/hoedown/hoedown/) and displayed using an integrated web browser. This all Markdown syntax (including images) are supported.
 
 # Encrypted Entries Using GPG
 MDiary supports gpg encrypted entries. To use this feature, place a gpg encrypted entry as *<name>.md.gpg* in the workspace. MDiary will automatically show a decrypt button in the header bar which will invoke gpg to decrypt all encrypted entries in the workspace for this session.

src/hoedown

@@ -0,0 +1 @@
+Subproject commit 980b9c549b4348d50b683ecee6abee470b98acda

src/mainwindow.c

@@ -771,16 +771,18 @@ void mainWindow_calendarSelected(GtkWidget *widget, gpointer user_data)
 
 static void mainWindow_set_text(struct mainWindow *mainWindow, gchar *text, gchar *file_url)
 {
-	gchar *tempfile_path = "/tmp/mdiary.tmp.md";
 	gchar *cmd	  = NULL;
 	gchar *cmd_stdout = NULL;
 	gchar *cmd_stderr = NULL;
-	gint exit_status  = 0;
-	gchar *base_url   = NULL;
 	GFileOutputStream *stream = NULL;
 	GFile *file       = NULL;
 	GtkTextIter iter;
 	GtkTextIter iter_end;
+	hoedown_buffer *ob;
+	hoedown_renderer *renderer = NULL;
+	void (*renderer_free)(hoedown_renderer *) = NULL;
+	hoedown_document *document;
+	gchar *base_url   = NULL;
 
 	if (mainWindow->renderer == RENDERER_TEXT) {
 		gtk_text_buffer_set_text(mainWindow->textBuffer, text, strlen(text));
@@ -802,24 +804,21 @@ static void mainWindow_set_text(struct mainWindow *mainWindow, gchar *text, gcha
 	} else {
 		if (text[0] != '\0') {
 			base_url = g_strdup_printf("file://%s", file_url);
-			file = g_file_new_for_path(tempfile_path);
-			stream = g_file_replace(
-						file, NULL, FALSE,
-						G_FILE_CREATE_NONE,
-						NULL, NULL);
-			g_output_stream_write(G_OUTPUT_STREAM(stream), text, strlen(text), NULL, NULL);
-			g_output_stream_flush(G_OUTPUT_STREAM(stream), NULL, NULL);
+			g_info("Rendering markdown as full HTML...");
 
-			cmd = g_strdup_printf("markdown %s", tempfile_path);
-			if (g_spawn_command_line_sync(cmd, &cmd_stdout, &cmd_stderr, &exit_status, NULL) &&
-					exit_status == 0) {
-				webkit_web_view_load_html(WEBKIT_WEB_VIEW(mainWindow->webkitView),
-							  cmd_stdout, base_url);
-			} else {
-				g_warning("Could not render markdown for file. Showing plain text instead.\n");
-				webkit_web_view_load_html(WEBKIT_WEB_VIEW(mainWindow->webkitView),
-							  text, base_url);
-			}
+			renderer = hoedown_html_renderer_new(0, 0);
+			renderer_free = hoedown_html_renderer_free;
+
+			ob = hoedown_buffer_new(64);
+			document = hoedown_document_new(renderer, 0, 16);
+			hoedown_document_render(document, ob, (const uint8_t *) text, strlen(text));
+
+			webkit_web_view_load_html(WEBKIT_WEB_VIEW(mainWindow->webkitView),
+						  hoedown_buffer_cstr(ob), base_url);
+
+			hoedown_buffer_free(ob);
+			hoedown_document_free(document);
+			renderer_free(renderer);
 			g_free(base_url);
 		} else {
 			webkit_web_view_load_html(WEBKIT_WEB_VIEW(mainWindow->webkitView),

src/mainwindow.h

@@ -8,6 +8,9 @@
 #include "mdiary.h"
 #include "md_pango.h"
 
+#include "hoedown/src/document.h"
+#include "hoedown/src/html.h"
+
 #define FILE_LIST_MAX_LEN 5
 
 enum {

src/mdiary.c

@@ -246,7 +246,7 @@ static gchar *mdiary_get_line_from_string(gchar **str_ptr)
  * @param autoCompletion
  */
 static void mdiary_add_file_to_store(struct mdiary_scanner *mdiary_scanner,
-				     gchar *filename, gchar *content,
+				     gchar *filename, gchar *content, GList *autotags,
 				     GtkListStore *entryListStore, GtkListStore *autoCompletion)
 {
 	GFile *file = NULL;
@@ -263,6 +263,8 @@ static void mdiary_add_file_to_store(struct mdiary_scanner *mdiary_scanner,
 	GString *text  = NULL;
 	guint header_state = 0;
 
+	GList *l;
+
 	g_message("Add file: %s\n", filename);
 	mdiary_scanner->entries_failed++; /* Will be decremented again when entry was successfully added. */
 
@@ -323,7 +325,7 @@ static void mdiary_add_file_to_store(struct mdiary_scanner *mdiary_scanner,
 	}
 	if (!tagList) {
 		g_warning("PARSER: Could not detect tags in file!\n");
-		tagList = g_list_append(tagList, "untagged");
+		tagList = g_list_append(tagList, g_strdup("untagged"));
 	}
 	if (!text) {
 		g_warning("PARSER: Could not find any text in file!\n");
@@ -338,6 +340,11 @@ static void mdiary_add_file_to_store(struct mdiary_scanner *mdiary_scanner,
 		title = g_strdup("Untitled");
 	}
 
+	for (l = autotags; l != NULL; l = l->next)
+	{
+		tagList = g_list_append(tagList, g_strdup(l->data));
+	}
+
 	mdiary_scanner->entries_failed--;
 	mdiary_scanner->entries_added++;
 	mdiary_add_entry_to_store(entryListStore,
@@ -359,6 +366,8 @@ static void mdiary_add_file_to_store(struct mdiary_scanner *mdiary_scanner,
 		g_input_stream_close(G_INPUT_STREAM(stream), NULL, NULL);
 		g_object_unref(file);
 	}
+
+	g_list_free_full(tagList, *g_free);
 	g_string_free(text, 0);
 	g_free(summary);
 	g_free(title);
@@ -366,7 +375,7 @@ static void mdiary_add_file_to_store(struct mdiary_scanner *mdiary_scanner,
 }
 
 static void mdiary_add_gpg_to_store(struct mdiary_scanner *mdiary_scanner,
-				    gchar *filename,
+				    gchar *filename, GList **add_tags,
 				    GtkListStore *entryListStore, GtkListStore *autoCompletion)
 {
 	gchar *cmd	  = NULL;
@@ -378,7 +387,7 @@ static void mdiary_add_gpg_to_store(struct mdiary_scanner *mdiary_scanner,
 
 	if (g_spawn_command_line_sync(cmd, &cmd_stdout, &cmd_stderr, &exit_status, NULL) && exit_status == 0) {
 		g_message("GPG: Decryption OK!\n");
-		mdiary_add_file_to_store(mdiary_scanner, filename, cmd_stdout, entryListStore, autoCompletion);
+		mdiary_add_file_to_store(mdiary_scanner, filename, cmd_stdout, *add_tags, entryListStore, autoCompletion);
 	} else {
 		mdiary_scanner->entries_failed++;
 		mdiary_scanner->error_code |= MDS_ERROR_GPG;
@@ -396,6 +405,7 @@ static void mdiary_add_gpg_to_store(struct mdiary_scanner *mdiary_scanner,
 
 static void mdiary_recurse_and_collect(struct mdiary_scanner *mdiary_scanner,
 				       gchar *base_dir,
+				       GList **autotags,
 				       GtkListStore *entryListStore,
 				       GtkListStore *autoCompletion,
 				       guint max_level)
@@ -417,27 +427,28 @@ static void mdiary_recurse_and_collect(struct mdiary_scanner *mdiary_scanner,
 				if (g_regex_match(regex, fullPath, 0, &match_info) &&
 						g_match_info_matches(match_info))
 					mdiary_add_file_to_store(mdiary_scanner,
-								 fullPath, NULL,
+								 fullPath, NULL, *autotags,
 								 entryListStore, autoCompletion);
 				g_regex_unref(regex);
 
-
 				regex = g_regex_new("\\.md.gpg$", G_REGEX_CASELESS, 0, NULL);
 				if (g_regex_match(regex, fullPath, 0, &match_info) &&
 						g_match_info_matches(match_info)) {
 					mdiary_scanner->entries_encrypted++;
 					if (mdiary_scanner->gpg_enabled)
 						mdiary_add_gpg_to_store(mdiary_scanner,
-									fullPath,
+									fullPath, autotags,
 									entryListStore, autoCompletion);
 				}
 				g_regex_unref(regex);
 
 			} else if (g_file_test(fullPath, G_FILE_TEST_IS_DIR) && max_level) {
+				*autotags = g_list_append(*autotags, dirname);
 				mdiary_recurse_and_collect(mdiary_scanner,
-							   fullPath,
+							   fullPath, autotags,
 							   entryListStore, autoCompletion,
 							   max_level--);
+				*autotags = g_list_remove(*autotags, g_list_last(*autotags)->data);
 			}
 			g_free(fullPath);
 		}
@@ -478,8 +489,11 @@ gint mdiary_scan_to_store(struct mdiary_scanner *mdiary_scanner,
 			  gchar *base_dir,
 			  GtkListStore *entryListStore, GtkListStore *autoCompletion)
 {
+	GList *autotags = NULL;
 
-	mdiary_recurse_and_collect(mdiary_scanner, base_dir, entryListStore, autoCompletion, 5);
+	mdiary_recurse_and_collect(mdiary_scanner, base_dir, &autotags, entryListStore, autoCompletion, 5);
+
+	g_list_free(autotags);
 
 	return mdiary_scanner->entries_added;
 }