Make the restart path configurable.

include/config.h

@@ -89,6 +89,7 @@ struct Config {
         const char *font;
 
         const char *ipc_socket_path;
+        const char *restart_state_path;
 
         int container_mode;
         int container_stack_limit;

src/cfgparse.l

@@ -91,6 +91,7 @@ assign                          { BEGIN(ASSIGN_COND); return TOKASSIGN; }
 set[^\n]*                       { return TOKCOMMENT; }
 ipc-socket                      { BEGIN(BIND_AWS_COND); return TOKIPCSOCKET; }
 ipc_socket                      { BEGIN(BIND_AWS_COND); return TOKIPCSOCKET; }
+restart_state                   { BEGIN(BIND_AWS_COND); return TOKRESTARTSTATE; }
 new_container                   { return TOKNEWCONTAINER; }
 new_window                      { return TOKNEWWINDOW; }
 focus_follows_mouse             { return TOKFOCUSFOLLOWSMOUSE; }

src/cfgparse.y

@@ -217,6 +217,7 @@ void parse_file(const char *f) {
 %token TOKASSIGN "assign"
 %token TOKSET
 %token TOKIPCSOCKET "ipc_socket"
+%token TOKRESTARTSTATE "restart_state"
 %token TOKEXEC "exec"
 %token TOKSINGLECOLOR
 %token TOKCOLOR
@@ -248,6 +249,7 @@ line:
         | workspace
         | assign
         | ipcsocket
+        | restart_state
         | exec
         | single_color
         | color
@@ -554,6 +556,13 @@ ipcsocket:
         }
         ;
 
+restart_state:
+        TOKRESTARTSTATE WHITESPACE STR
+        {
+                config.restart_state_path = $<string>3;
+        }
+        ;
+
 exec:
         TOKEXEC WHITESPACE STR
         {

src/config.c

@@ -364,6 +364,8 @@ void load_configuration(xcb_connection_t *conn, const char *override_configpath,
         INIT_COLOR(config.bar.unfocused, "#333333", "#222222", "#888888");
         INIT_COLOR(config.bar.urgent, "#2f343a", "#900000", "#ffffff");
 
+        config.restart_state_path = "~/.i3/_restart.json";
+
         parse_configuration(override_configpath);
 
         if (reload) {

src/tree.c

@@ -14,7 +14,7 @@ struct all_cons_head all_cons = TAILQ_HEAD_INITIALIZER(all_cons);
  *
  */
 bool tree_restore() {
-    char *globbed = resolve_tilde("~/.i3/_restart.json");
+    char *globbed = resolve_tilde(config.restart_state_path);
 
     if (!path_exists(globbed)) {
         LOG("%s does not exist, not restoring tree\n", globbed);
@@ -27,7 +27,11 @@ bool tree_restore() {
     focused = croot;
 
     tree_append_json(globbed);
-    char *old_restart = resolve_tilde("~/.i3/_restart.json.old");
+
+    size_t path_len = strlen(config.restart_state_path);
+    char *old_restart = malloc(path_len + 5);
+    strncpy(old_restart, config.restart_state_path, path_len + 5);
+    strncat(old_restart, ".old", path_len + 5);
     unlink(old_restart);
     rename(globbed, old_restart);
     free(globbed);

src/util.c

@@ -375,7 +375,7 @@ void store_restart_layout() {
         unsigned int length;
         y(get_buf, &payload, &length);
 
-        char *globbed = resolve_tilde("~/.i3/_restart.json");
+        char *globbed = resolve_tilde(config.restart_state_path);
         int fd = open(globbed, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
         free(globbed);
         if (fd == -1) {