From f1f65664dab973ebe85f0169bf6f5eb210c0d15f Mon Sep 17 00:00:00 2001
From: Sidharth Kapur <sidharthkapur1@gmail.com>
Date: Thu, 1 Oct 2015 16:55:07 -0500
Subject: [PATCH] Add feature to show ~ instead of $HOME in title

---
 zathura/config.c  |  2 ++
 zathura/zathura.c | 40 +++++++++++++++++++++++++++++++++-------
 zathura/zathura.h |  2 ++
 3 files changed, 37 insertions(+), 7 deletions(-)

diff --git a/zathura/config.c b/zathura/config.c
index 25275af..22078ca 100644
--- a/zathura/config.c
+++ b/zathura/config.c
@@ -224,6 +224,8 @@ config_load_default(zathura_t* zathura)
   bool_value = false;
   girara_setting_add(gsession, "window-title-basename",  &bool_value,  BOOLEAN, false, _("Use basename of the file in the window title"), NULL, NULL);
   bool_value = false;
+  girara_setting_add(gsession, "window-title-home-tilde",  &bool_value,  BOOLEAN, false, _("Use ~ instead of $HOME in the filename in the window title"), NULL, NULL);
+  bool_value = false;
   girara_setting_add(gsession, "window-title-page",      &bool_value,  BOOLEAN, false, _("Display the page number in the window title"), NULL, NULL);
   bool_value = false;
   girara_setting_add(gsession, "statusbar-basename",     &bool_value,  BOOLEAN, false, _("Use basename of the file in the statusbar"), NULL, NULL);
diff --git a/zathura/zathura.c b/zathura/zathura.c
index 391f756..6e92bca 100644
--- a/zathura/zathura.c
+++ b/zathura/zathura.c
@@ -546,6 +546,38 @@ document_info_open(gpointer data)
   return FALSE;
 }
 
+const char*
+get_window_title_filename(zathura_t* zathura, const char* file_path)
+{
+  bool basename_only = false;
+  girara_setting_get(zathura->ui.session, "window-title-basename", &basename_only);
+  if (basename_only == false) {
+    bool home_tilde = false;
+    girara_setting_get(zathura->ui.session, "window-title-home-tilde", &home_tilde);
+    if (home_tilde) {
+      char *home = getenv("HOME");
+      int home_len = home ? strlen(home) : 0;
+      int file_path_len = file_path ? strlen(file_path) : 0;
+
+      if (home_len > 1 && strncmp(home, file_path, home_len) == 0 && (!file_path[home_len] || file_path[home_len] == '/')) {
+        // Length should be total length of path - length of $HOME + 1 for '~' + 1 for '\0'
+        int tlen = file_path_len - home_len + 2;
+        char *tdir = malloc(sizeof(char) * tlen);
+        strncpy(tdir + 1, file_path + home_len, tlen);
+        tdir[0] = '~';
+        tdir[tlen - 1] = '\0';
+        return tdir;
+      } else {
+        return file_path;
+      }
+    } else {
+      return file_path;
+    }
+  } else {
+    return zathura_document_get_basename(zathura->document);
+  }
+}
+
 bool
 document_open(zathura_t* zathura, const char* path, const char* password,
               int page_number)
@@ -838,13 +870,7 @@ document_open(zathura_t* zathura, const char* path, const char* password,
   }
 
   /* update title */
-  basename_only = false;
-  girara_setting_get(zathura->ui.session, "window-title-basename", &basename_only);
-  if (basename_only == false) {
-    girara_set_window_title(zathura->ui.session, file_path);
-  } else {
-    girara_set_window_title(zathura->ui.session, zathura_document_get_basename(document));
-  }
+  girara_set_window_title(zathura->ui.session, get_window_title_filename(zathura, file_path));
 
   g_free(file_uri);
 
diff --git a/zathura/zathura.h b/zathura/zathura.h
index d4b71af..a829415 100644
--- a/zathura/zathura.h
+++ b/zathura/zathura.h
@@ -278,6 +278,8 @@ void zathura_set_plugin_dir(zathura_t* zathura, const char* dir);
  */
 void zathura_set_argv(zathura_t* zathura, char** argv);
 
+const char* get_window_title_filename(zathura_t* zathura, const char* file_path);
+
 /**
  * Opens a file
  *