From a08520a33d248d07038b93f9e0a74afdd8d24022 Mon Sep 17 00:00:00 2001
From: Moritz Lipp <mlq@pwmt.org>
Date: Tue, 14 Aug 2012 11:45:11 +0200
Subject: [PATCH] Implement cmd_exec with

---
 commands.c | 22 ++++++++++++++++++++++
 commands.h |  9 +++++++++
 config.c   |  1 +
 utils.c    | 42 ++++++++++++++++++++++++++++++++++++++++++
 utils.h    | 12 ++++++++++++
 5 files changed, 86 insertions(+)

diff --git a/commands.c b/commands.c
index c8b8d3c..5d568f7 100644
--- a/commands.c
+++ b/commands.c
@@ -21,6 +21,7 @@
 
 #include <girara/session.h>
 #include <girara/settings.h>
+#include <girara/commands.h>
 #include <girara/datastructures.h>
 #include <girara/utils.h>
 
@@ -487,6 +488,27 @@ error_ret:
   return true;
 }
 
+bool
+cmd_exec(girara_session_t* session, girara_list_t* argument_list)
+{
+  g_return_val_if_fail(session != NULL, false);
+  g_return_val_if_fail(session->global.data != NULL, false);
+  zathura_t* zathura = session->global.data;
+
+  if (zathura->document != NULL) {
+    const char* path = zathura_document_get_path(zathura->document);
+
+    GIRARA_LIST_FOREACH(argument_list, char*, iter, value)
+      char* r = NULL;
+      if ((r = replace_substring(value, "$FILE", path)) != NULL) {
+        girara_list_iterator_set(iter, r);
+      }
+    GIRARA_LIST_FOREACH_END(argument_list, char*, iter, value);
+  }
+
+  return girara_exec_with_argument_list(session, argument_list);
+}
+
 bool
 cmd_offset(girara_session_t* session, girara_list_t* argument_list)
 {
diff --git a/commands.h b/commands.h
index e22fa86..1327068 100644
--- a/commands.h
+++ b/commands.h
@@ -142,6 +142,15 @@ bool cmd_search(girara_session_t* session, const char* input, girara_argument_t*
  */
 bool cmd_export(girara_session_t* session, girara_list_t* argument_list);
 
+/**
+ * Execute command
+ *
+ * @param session The used girara session
+ * @param argument_list List of passed arguments
+ * @return true if no error occured
+ */
+bool cmd_exec(girara_session_t* session, girara_list_t* argument_list);
+
 /**
  * Set page offset
  *
diff --git a/config.c b/config.c
index 99443b3..401472f 100644
--- a/config.c
+++ b/config.c
@@ -293,6 +293,7 @@ config_load_default(zathura_t* zathura)
   girara_inputbar_command_add(gsession, "blist",      NULL,   cmd_bookmark_open,   cc_bookmarks, _("List all bookmarks"));
   girara_inputbar_command_add(gsession, "close",      NULL,   cmd_close,           NULL,         _("Close current file"));
   girara_inputbar_command_add(gsession, "info",       NULL,   cmd_info,            NULL,         _("Show file information"));
+  girara_inputbar_command_add(gsession, "exec",       NULL,   cmd_exec,            NULL,         _("Execute a command"));
   girara_inputbar_command_add(gsession, "help",       NULL,   cmd_help,            NULL,         _("Show help"));
   girara_inputbar_command_add(gsession, "open",       "o",    cmd_open,            cc_open,      _("Open document"));
   girara_inputbar_command_add(gsession, "quit",       "q",    cmd_quit,            NULL,         _("Close zathura"));
diff --git a/utils.c b/utils.c
index 724b591..dc765c3 100644
--- a/utils.c
+++ b/utils.c
@@ -393,3 +393,45 @@ zathura_get_version_string(zathura_t* zathura, bool markup)
 
 	return version;
 }
+
+char*
+replace_substring(const char* string, const char* old, const char* new)
+{
+  if (string == NULL || old == NULL || new == NULL) {
+    return NULL;
+  }
+
+  size_t old_len = strlen(old);
+  size_t new_len = strlen(new);
+
+  /* count occurences */
+  unsigned int count = 0;
+  unsigned int i = 0;
+
+  for (i = 0; string[i] != '\0'; i++) {
+    if (strstr(&string[i], old) == &string[i]) {
+      i += (old_len - 1);
+      count++;
+    }
+  }
+
+  if (count == 0) {
+    return NULL;
+  }
+
+  char* ret = g_malloc0(sizeof(char) * (i - count * old_len + count * new_len + 1));
+  i = 0;
+
+  /* replace */
+  while (*string != '\0') {
+    if (strstr(string, old) == string) {
+      strcpy(&ret[i], new);
+      i += new_len;
+      string += old_len;
+    } else {
+      ret[i++] = *string++;
+    }
+  }
+
+  return ret;
+}
diff --git a/utils.h b/utils.h
index 2fffab8..b531731 100644
--- a/utils.h
+++ b/utils.h
@@ -140,4 +140,16 @@ void document_draw_search_results(zathura_t* zathura, bool value);
  */
 char* zathura_get_version_string(zathura_t* zathura, bool markup);
 
+/**
+ * Replaces all occurences of \ref old in \ref string with \ref new and returns
+ * a new allocated string
+ *
+ * @param string The original string
+ * @param old String to replace
+ * @param new Replacement string
+ *
+ * @return new allocated string
+ */
+char* replace_substring(const char* string, const char* old, const char* new);
+
 #endif // UTILS_H