[Script] Support a data option that get passed to next execution.

fixes: #1601

Examples/test_script_env.sh

@@ -7,6 +7,7 @@ then
 fi
 
 echo -en "\x00no-custom\x1ffalse\n"
+echo -en "\x00data\x1fmonkey do, monkey did\n"
 echo -en "\x00use-hot-keys\x1ftrue\n"
 echo -en "${ROFI_RETV}\x00icon\x1ffirefox\x1finfo\x1ftest\n"
 
@@ -14,3 +15,7 @@ if [ -n "${ROFI_INFO}" ]
 then
     echo "my info: ${ROFI_INFO} "
 fi
+if [ -n "${ROFI_DATA}" ]
+then
+    echo "my data: ${ROFI_DATA} "
+fi

doc/rofi-script.5

@@ -82,6 +82,10 @@ An integer number with the current state:
 .PP
 Environment get set when selected entry get set with the property value of the 'info' row option, if set.
 
+.SS \fB\fCROFI\_DATA\fR
+.PP
+Environment get set when script sets \fB\fCdata\fR option in header.
+
 .SH Passing mode options
 .PP
 Extra options, like setting the prompt, can be set by the script.
@@ -119,6 +123,8 @@ The following extra options exists:
 \fBno\-custom\fP:   If set to 'true'; only accept listed entries, ignore custom input.
 .IP \(bu 2
 \fBuse\-hot\-keys\fP: If set to true, it enabled the Custom keybindings for script. Warning this breaks the normal rofi flow.
+.IP \(bu 2
+\fBdata\fP:         Passed data to the next execution of the script via \fBROFI\_DATA\fP\&.
 
 .RE
 

doc/rofi-script.5.markdown

@@ -63,6 +63,10 @@ An integer number with the current state:
 
 Environment get set when selected entry get set with the property value of the 'info' row option, if set.
 
+### `ROFI_DATA`
+
+Environment get set when script sets `data` option in header.
+
 ## Passing mode options
 
 Extra options, like setting the prompt, can be set by the script.
@@ -84,6 +88,7 @@ The following extra options exists:
  * **delim**:       Set the delimiter for for next rows. Default is '\n' and this option should finish with this. Only call this on first call of script, it is remembered for consecutive calls.
  * **no-custom**:   If set to 'true'; only accept listed entries, ignore custom input.
  * **use-hot-keys**: If set to true, it enabled the Custom keybindings for script. Warning this breaks the normal rofi flow.
+ * **data**:         Passed data to the next execution of the script via **ROFI_DATA**.
 
 ## Parsing row options
 

source/modes/script.c

@@ -65,6 +65,7 @@ typedef struct {
   /** Configuration settings. */
   char *message;
   char *prompt;
+  char *data;
   gboolean do_markup;
   char delim;
   /** no custom */
@@ -134,6 +135,8 @@ static void parse_header_entry(Mode *sw, char *line, ssize_t length) {
       pd->no_custom = (strcasecmp(value, "true") == 0);
     } else if (strcasecmp(line, "use-hot-keys") == 0) {
       pd->use_hot_keys = (strcasecmp(value, "true") == 0);
+    } else if (strcasecmp(line, "data") == 0) {
+      pd->data = g_strdup(value);
     }
   }
 }
@@ -163,6 +166,9 @@ static DmenuScriptEntry *execute_executor(Mode *sw, char *arg,
   if (entry && entry->info) {
     env = g_environ_setenv(env, "ROFI_INFO", entry->info, TRUE);
   }
+  if (pd->data) {
+    env = g_environ_setenv(env, "ROFI_DATA", pd->data, TRUE);
+  }
 
   if (g_shell_parse_argv(sw->ed, &argc, &argv, &error)) {
     argv = g_realloc(argv, (argc + 2) * sizeof(char *));
@@ -342,6 +348,7 @@ static void script_mode_destroy(Mode *sw) {
     g_free(rmpd->cmd_list);
     g_free(rmpd->message);
     g_free(rmpd->prompt);
+    g_free(rmpd->data);
     g_free(rmpd->urgent_list);
     g_free(rmpd->active_list);
     g_free(rmpd);