Add option to change location of cache dir.

-cache-dir

Fixes: #769

config/config.c

@@ -156,4 +156,6 @@ Settings config = {
     .combi_hide_mode_prefix = FALSE,
 
     .matching_negate_char   = '-',
+
+    .cache_dir              = NULL,
 };

doc/rofi-theme-selector.1

@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "ROFI\-THEME\-SELECTOR" "1" "February 2018" "" ""
+.TH "ROFI\-THEME\-SELECTOR" "1" "May 2018" "" ""
 .
 .SH "NAME"
 \fBrofi\-theme\-selector\fR \- Preview and apply themes for \fBrofi\fR

doc/rofi.1

@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "ROFI" "1" "January 2019" "" ""
+.TH "ROFI" "1" "February 2019" "" ""
 .
 .SH "NAME"
 \fBrofi\fR \- A window switcher, application launcher, ssh dialog and dmenu replacement
@@ -311,6 +311,12 @@ Filter the list by setting text in input bar to \fIfilter\fR
 Load an alternative configuration file\.
 .
 .P
+\fB\-cache\-dir\fR \fIfilename\fR
+.
+.P
+Directory that is used to place temporary files, like history\.
+.
+.P
 \fB\-scroll\-method\fR \fImethod\fR
 .
 .P

doc/rofi.1.markdown

@@ -175,6 +175,11 @@ Filter the list by setting text in input bar to *filter*
 
 Load an alternative configuration file.
 
+`-cache-dir` *filename*
+
+Directory that is used to place temporary files, like history.
+
+
 `-scroll-method` *method*
 
 Select the scrolling method. 0: Per page, 1: continuous.

include/settings.h

@@ -181,6 +181,9 @@ typedef struct
     gboolean       combi_hide_mode_prefix;
 
     char           matching_negate_char;
+
+    /** Cache directory. */
+    char           *cache_dir;
 } Settings;
 /** Global Settings structure. */
 extern Settings config;

source/rofi.c

@@ -776,13 +776,6 @@ int main ( int argc, char *argv[] )
         g_free ( base_name );
     }
     TICK ();
-    // Get the path to the cache dir.
-    cache_dir = g_get_user_cache_dir ();
-
-    if ( g_mkdir_with_parents ( cache_dir, 0700 ) < 0 ) {
-        g_warning ( "Failed to create cache directory: %s", g_strerror ( errno ) );
-        return EXIT_FAILURE;
-    }
 
     // Create pid file path.
     const char *path = g_get_user_runtime_dir ();
@@ -883,6 +876,18 @@ int main ( int argc, char *argv[] )
 
     parse_keys_abe ( bindings );
 
+    // Get the path to the cache dir.
+    cache_dir = g_get_user_cache_dir ();
+
+    if ( config.cache_dir != NULL ) {
+        cache_dir = config.cache_dir;
+    }
+
+    if ( g_mkdir_with_parents ( cache_dir, 0700 ) < 0 ) {
+        g_warning ( "Failed to create cache directory: %s", g_strerror ( errno ) );
+        return EXIT_FAILURE;
+    }
+
     /** dirty hack for dmenu compatibility */
     char *windowid = NULL;
     if ( !dmenu_mode ) {

source/xrmoptions.c

@@ -218,6 +218,8 @@ static XrmOption xrmOptions[] = {
       "Hide the prefix mode prefix on the combi view.", CONFIG_DEFAULT },
     { xrm_Char, "matching-negate-char",     { .charc= &config.matching_negate_char            }, NULL,
       "Set the character used to negate the matching. ('\\0' to disable)", CONFIG_DEFAULT },
+    { xrm_String, "cache-dir",               { .str = &config.cache_dir                       }, NULL,
+      "Directory where history and temporary files are stored.", CONFIG_DEFAULT },
 };
 
 /** Dynamic array of extra options */