degesch: add Meta-H to open the full log file

As opposed to just the visible backlog.

degesch.c

@@ -3037,12 +3037,9 @@ make_log_filename (const char *filename, struct str *output)
 			str_append_c (output, tolower_ascii (*p));
 }
 
-static void
+static char *
-buffer_open_log_file (struct app_context *ctx, struct buffer *buffer)
+buffer_get_log_path (struct buffer *buffer)
 {
-	if (!ctx->logging || buffer->log_file)
-		return;
-
 	struct str path;
 	str_init (&path);
 	get_xdg_home_dir (&path, "XDG_DATA_HOME", ".local/share");
@@ -3054,13 +3051,22 @@ buffer_open_log_file (struct app_context *ctx, struct buffer *buffer)
 	str_append_c (&path, '/');
 	make_log_filename (buffer->name, &path);
 	str_append (&path, ".log");
+	return str_steal (&path);
+}
 
-	if (!(buffer->log_file = fopen (path.str, "ab")))
+static void
+buffer_open_log_file (struct app_context *ctx, struct buffer *buffer)
+{
+	if (!ctx->logging || buffer->log_file)
+		return;
+
+	char *path = buffer_get_log_path (buffer);
+	if (!(buffer->log_file = fopen (path, "ab")))
 		log_global_error (ctx, "Couldn't open log file `#s': #s",
-			path.str, strerror (errno));
+			path, strerror (errno));
 	else
 		set_cloexec (fileno (buffer->log_file));
-	str_free (&path);
+	free (path);
 }
 
 static void
@@ -9046,18 +9052,9 @@ exec_backlog_helper (const char *command, FILE *backlog)
 }
 
 static void
-display_backlog (struct app_context *ctx)
+launch_backlog_helper (struct app_context *ctx, FILE *backlog)
 {
 	hard_assert (!ctx->running_backlog_helper);
-
-	FILE *backlog = tmpfile ();
-	set_cloexec (fileno (backlog));
-
-	for (struct buffer_line *line = ctx->current_buffer->lines;
-		line; line = line->next)
-		buffer_line_write_to_backlog (ctx, line, backlog);
-
-	rewind (backlog);
 	suspend_terminal (ctx);
 
 	pid_t child = fork ();
@@ -9083,6 +9080,47 @@ display_backlog (struct app_context *ctx)
 	fclose (backlog);
 }
 
+static void
+display_backlog (struct app_context *ctx)
+{
+	FILE *backlog = tmpfile ();
+	if (!backlog)
+	{
+		log_global_error (ctx, "#s: #s",
+			"Failed to create a temporary file", strerror (errno));
+		return;
+	}
+
+	for (struct buffer_line *line = ctx->current_buffer->lines;
+		line; line = line->next)
+		buffer_line_write_to_backlog (ctx, line, backlog);
+
+	rewind (backlog);
+	set_cloexec (fileno (backlog));
+	launch_backlog_helper (ctx, backlog);
+}
+
+static void
+display_full_log (struct app_context *ctx)
+{
+	char *path = buffer_get_log_path (ctx->current_buffer);
+	FILE *full_log = fopen (path, "rb");
+	free (path);
+
+	if (!full_log)
+	{
+		log_global_error (ctx, "Failed to open log file for #s: #s",
+			ctx->current_buffer->name, strerror (errno));
+		return;
+	}
+
+	if (ctx->current_buffer->log_file)
+		fflush (ctx->current_buffer->log_file);
+
+	set_cloexec (fileno (full_log));
+	launch_backlog_helper (ctx, full_log);
+}
+
 static void
 bind_common_keys (struct app_context *ctx)
 {
@@ -9095,6 +9133,7 @@ bind_common_keys (struct app_context *ctx)
 		input_bind_meta (self, '0' + i, "goto-buffer");
 
 	input_bind_meta (self, 'm', "insert-attribute");
+	input_bind_meta (self, 'h', "display-full-log");
 
 	if (key_f5)
 		input_bind (self, key_f5, "previous-buffer");
@@ -9153,6 +9192,17 @@ on_readline_display_backlog (int count, int key)
 	return 0;
 }
 
+static int
+on_readline_display_full_log (int count, int key)
+{
+	(void) count;
+	(void) key;
+
+	struct app_context *ctx = g_ctx;
+	display_full_log (ctx);
+	return 0;
+}
+
 static int
 on_readline_redraw_screen (int count, int key)
 {
@@ -9246,6 +9296,7 @@ app_readline_init (void)
 	rl_add_defun ("next-buffer",      on_readline_next_buffer,      -1);
 	rl_add_defun ("goto-buffer",      on_readline_goto_buffer,      -1);
 	rl_add_defun ("display-backlog",  on_readline_display_backlog,  -1);
+	rl_add_defun ("display-full-log", on_readline_display_full_log, -1);
 	rl_add_defun ("redraw-screen",    on_readline_redraw_screen,    -1);
 	rl_add_defun ("insert-attribute", on_readline_insert_attribute, -1);
 	rl_add_defun ("send-line",        on_readline_return,           -1);
@@ -9314,6 +9365,15 @@ on_editline_display_backlog (EditLine *editline, int key)
 	display_backlog (g_ctx);
 }
 
+static unsigned char
+on_editline_display_full_log (EditLine *editline, int key)
+{
+	(void) editline;
+	(void) key;
+
+	display_full_log (g_ctx);
+}
+
 static unsigned char
 on_editline_redraw_screen (EditLine *editline, int key)
 {
@@ -9430,7 +9490,8 @@ app_editline_init (struct input *self)
 		{ "goto-buffer",      "Go to buffer",    on_editline_goto_buffer      },
 		{ "previous-buffer",  "Previous buffer", on_editline_previous_buffer  },
 		{ "next-buffer",      "Next buffer",     on_editline_next_buffer      },
-		{ "display-backlog",  "Display backlog", on_editline_display_backlog  },
+		{ "display-backlog",  "Show backlog",    on_editline_display_backlog  },
+		{ "display-full-log", "Show full log",   on_editline_display_full_log },
 		{ "redraw-screen",    "Redraw screen",   on_editline_redraw_screen    },
 		{ "insert-attribute", "mIRC formatting", on_editline_insert_attribute },
 		{ "send-line",        "Send line",       on_editline_return           },