Support ~/.config/labwc/{autostart,environment}

README.md

@@ -79,16 +79,13 @@ Suggested apps to use with labwc:
 ## 6. Roadmap
 
 - [x] Support xwayland
-- [x] Parse [rc.xml](docs/rc.xml)
-- [x] Parse [themerc](docs/themerc)
-- [x] Read xbm icons
+- [x] Parse ~/.config/labwc/{rc.xml,autostart,environment}
+- [x] Parse /usr/share/themes/<name>/openbox-3/themerc and associated xbm icons
 - [x] Show maximize, iconify, close buttons
-- [x] Catch SIGHUP to reconfigure (re-load config and theme)
+- [x] Catch SIGHUP to re-load config file and theme
 - [x] Support layer-shell protocol (partial)
 - [ ] Support 'maximize'
 - [ ] Show window title
-- [ ] Read ~/.config/labwc/autostart
-- [ ] Read ~/.config/labwc/environment (useful for XKB environment variables)
 - [ ] Support foreign-toplevel protocol (e.g. to integrate with wlroots panels/bars)
 - [ ] Support damage control to reduce CPU usage
 - [ ] Implement client-menu

include/config/session.h

@@ -0,0 +1,16 @@
+#ifndef __LABWC_SESSION_H
+#define __LABWC_SESSION_H
+
+/**
+ * session_environment_init - set enrivonment variables
+ * Note: Same as `. ~/.config/labwc/environment` (or equivalent XDG config dir)
+ */
+session_environment_init(void);
+
+/**
+ * session_autostart_init - run autostart file as shell script
+ * Note: Same as `sh ~/.config/labwc/autostart` (or equivalent XDG config dir)
+ */
+session_autostart_init(void);
+
+#endif /* __LABWC_SESSION_H */

src/config/meson.build

@@ -1,4 +1,5 @@
 labwc_sources += files(
   'rcxml.c',
   'keybind.c',
+  'session.c',
 )

src/config/session.c

@@ -0,0 +1,131 @@
+#define _POSIX_C_SOURCE 200809L
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include "common/dir.h"
+#include "common/log.h"
+#include "common/spawn.h"
+
+static bool
+isfile(const char *path)
+{
+	struct stat st;
+	return (!stat(path, &st));
+}
+
+static bool
+string_empty(const char *s)
+{
+	return !s || !*s;
+}
+
+static void
+rtrim(char **s)
+{
+	size_t len = strlen(*s);
+	if (!len) {
+		return;
+	}
+	char *end = *s + len - 1;
+	while (end >= *s && isspace(*end)) {
+		end--;
+	}
+	*(end + 1) = '\0';
+}
+
+static char *
+strstrip(char *s)
+{
+	rtrim(&s);
+	while (isspace(*s)) {
+		s++;
+	}
+	return s;
+}
+
+static void
+process_line(char *line)
+{
+	if (string_empty(line) || line[0] == '#') {
+		return;
+	}
+	char *key = NULL, *value = NULL;
+	char *p = strchr(line, '=');
+	if (!p) {
+		return;
+	}
+	*p = '\0';
+	key = strstrip(line);
+	value = strstrip(++p);
+	if (string_empty(key) || string_empty(value)) {
+		return;
+	}
+	info("setenv %s %s", key, value);
+	setenv(key, value, 1);
+}
+
+void
+read_environment_file(const char *filename)
+{
+	char *line = NULL;
+	size_t len = 0;
+	FILE *stream = fopen(filename, "r");
+	if (!stream) {
+		return;
+	}
+	while (getline(&line, &len, stream) != -1) {
+		char *p = strrchr(line, '\n');
+		if (p) {
+			*p = '\0';
+		}
+		process_line(line);
+	}
+	free(line);
+	fclose(stream);
+}
+
+static const char *
+config_dir_append(const char *append)
+{
+	const char *config = config_dir();
+	if (string_empty(config) || string_empty(append)) {
+		return NULL;
+	}
+	int len = strlen(config) + strlen(append) + 2;
+	char *buffer = calloc(len, 1);
+	strcat(buffer, config);
+	strcat(buffer, "/");
+	strcat(buffer, append);
+	return buffer;
+}
+
+void
+session_environment_init(void)
+{
+	const char *environment = config_dir_append("environment");
+	if (!environment)
+		return;
+	read_environment_file(environment);
+	free((void*)environment);
+}
+
+void
+session_autostart_init(void)
+{
+	const char *autostart = config_dir_append("autostart");
+	if (!autostart)
+		return;
+	if (!isfile(autostart)) {
+		warn("no autostart file");
+		return;
+	}
+	int len = strlen(autostart) + 4;
+	char *cmd = calloc(len, 1);
+	strcat(cmd, "sh ");
+	strcat(cmd, autostart);
+	spawn_async_no_shell(cmd);
+	free((void*)autostart);
+}

src/main.c

@@ -1,4 +1,5 @@
 #include "common/spawn.h"
+#include "config/session.h"
 #include "labwc.h"
 #include "theme/theme.h"
 #include "xbm/xbm.h"
@@ -44,6 +45,8 @@ main(int argc, char *argv[])
 	}
 
 	wlr_log_init(WLR_ERROR, NULL);
+
+	session_environment_init();
 	rcxml_read(config_file);
 
 	if (!getenv("XDG_RUNTIME_DIR")) {
@@ -58,6 +61,7 @@ main(int argc, char *argv[])
 	theme_read(rc.theme_name);
 	xbm_load(server.renderer);
 
+	session_autostart_init();
 	if (startup_cmd) {
 		spawn_async_no_shell(startup_cmd);
 	}