Added support for gpg encrypted files

src/mdiary.c

@@ -217,13 +217,48 @@ static GList *mdiary_add_tags_from_string(gchar *string)
 	return ret;
 }
 
-static void mdiary_add_file_to_store(gchar *filename, GtkListStore *entryListStore, GtkListStore *autoCompletion)
+/**
+ * @brief mdiary_get_line_from_string WARNING: This does modify str and the content of str!
+ * @param str The pointer to the string where to search the linebreak
+ * @return The current line (null terminated). Do not free, this is a direct pointer into the original string.
+ */
+static gchar *mdiary_get_line_from_string(gchar **str_ptr)
+{
+	gchar *start;
+	gchar *str;
+
+	if (!str_ptr || !*str_ptr | !**str_ptr)
+		return NULL;
+
+	str   = *str_ptr;
+	start = str;
+
+	while (*str != '\n' && *str != '\0') {
+		str++;
+	}
+
+	*str = '\0';
+	*str_ptr = ++str;
+
+	return start;
+}
+
+/**
+ * @brief mdiary_add_file_to_store
+ * @param filename
+ * @param content NULL when the file shall be read by the function. Otherwise the file content.
+ * @param entryListStore
+ * @param autoCompletion
+ */
+static void mdiary_add_file_to_store(gchar *filename, gchar *content,
+				     GtkListStore *entryListStore, GtkListStore *autoCompletion)
 {
 	GFile *file;
 	GError *err = NULL;
 	GFileInputStream *stream;
 	GDataInputStream *dstream;
 	gchar *line;
+	gchar *content_ptr;
 
 	GDateTime *datetime = NULL;
 	gchar *title   = NULL;
@@ -234,6 +269,7 @@ static void mdiary_add_file_to_store(gchar *filename, GtkListStore *entryListSto
 
 	g_message("Add file: %s\n", filename);
 
+	if (!content) {
 		file = g_file_new_for_path(filename);
 		stream = g_file_read(file, NULL, &err);
 		if (err != NULL) {
@@ -242,8 +278,12 @@ static void mdiary_add_file_to_store(gchar *filename, GtkListStore *entryListSto
 			return;
 		}
 		dstream = g_data_input_stream_new(G_INPUT_STREAM(stream));
+	}
 
-	while (line = g_data_input_stream_read_line(G_DATA_INPUT_STREAM(dstream), NULL, NULL, NULL)) {
+	content_ptr = content;
+
+	while (line = (content ? mdiary_get_line_from_string(&content_ptr) :
+		       g_data_input_stream_read_line(G_DATA_INPUT_STREAM(dstream), NULL, NULL, NULL))) {
 		if (header_state == 0) {
 			if (!datetime) {
 				datetime = mdiary_get_date_from_string_ext(line, "Date: .*", "");
@@ -323,6 +363,31 @@ static void mdiary_add_file_to_store(gchar *filename, GtkListStore *entryListSto
 	g_object_unref(file);
 }
 
+static void mdiary_add_gpg_to_store(gchar *filename, GtkListStore *entryListStore, GtkListStore *autoCompletion)
+{
+	gchar *cmd	  = NULL;
+	gchar *cmd_stdout = NULL;
+	gchar *cmd_stderr = NULL;
+	gint exit_status  = 0;
+
+	cmd = g_strdup_printf("gpg --decrypt %s", filename);
+
+	if (g_spawn_command_line_sync(cmd, &cmd_stdout, &cmd_stderr, &exit_status, NULL) && exit_status == 0) {
+		g_print("GPG: Decryption OK!\n");
+		mdiary_add_file_to_store(filename, cmd_stdout, entryListStore, autoCompletion);
+	} else {
+		g_print("GPG: Decryption of message failed!\n"
+			"---------- SNIP ----------\n"
+			"%s"
+			"---------- SNIP ----------\n",
+			cmd_stderr ? cmd_stderr : "Unknown error.");
+	}
+
+	g_free(cmd);
+	g_free(cmd_stdout);
+	g_free(cmd_stderr);
+}
+
 static void mdiary_recurse_and_collect(gchar *base_dir,
 				       GtkListStore *entryListStore,
 				       GtkListStore *autoCompletion,
@@ -343,7 +408,13 @@ static void mdiary_recurse_and_collect(gchar *base_dir,
 				regex = g_regex_new("\\.md$", G_REGEX_CASELESS, 0, NULL);
 				if (g_regex_match(regex, fullPath, 0, &match_info) &&
 						g_match_info_matches(match_info))
-					mdiary_add_file_to_store(fullPath, entryListStore, autoCompletion);
+					mdiary_add_file_to_store(fullPath, NULL, entryListStore, autoCompletion);
+				g_regex_unref(regex);
+
+				regex = g_regex_new("\\.md.gpg$", G_REGEX_CASELESS, 0, NULL);
+				if (g_regex_match(regex, fullPath, 0, &match_info) &&
+						g_match_info_matches(match_info))
+					mdiary_add_gpg_to_store(fullPath, entryListStore, autoCompletion);
 				g_regex_unref(regex);
 			} else if (g_file_test(fullPath, G_FILE_TEST_IS_DIR) && max_level) {
 				mdiary_recurse_and_collect(fullPath, entryListStore, autoCompletion, max_level--);