gladish: credit translators in the about dialog

_(translator-credits) is not used because i think it will lead
to need to translate names multiple times, because some of them
appear as part of author credits, for example.

common/catdup.c

@@ -153,3 +153,42 @@ char * catdupv(const char * s1, const char * s2, ...)
 
   return buffer;
 }
+
+char * catdup_array(const char ** array, const char * delimiter)
+{
+  size_t len;
+  size_t i;
+  size_t delimiter_length;
+  char * buffer;
+  char * p;
+
+  delimiter_length = delimiter != NULL ? strlen(delimiter) : 0;
+
+  len = 0;
+  for (i = 0; array[i] != NULL; i++)
+  {
+    len += strlen(array[i]);
+    len += delimiter_length;
+  }
+
+  buffer = malloc(len);
+  if (buffer == NULL)
+  {
+    log_error("malloc(%zu) failed.", len);
+    return NULL;
+  }
+
+  p = buffer;
+  for (i = 0; array[i] != NULL; i++)
+  {
+    len = strlen(array[i]);
+    memcpy(p, array[i], len);
+    p += len;
+    memcpy(p, delimiter, delimiter_length);
+    p += delimiter_length;
+  }
+
+  *p = 0;
+
+  return buffer;
+}

common/catdup.h

@@ -31,5 +31,6 @@ char * catdup(const char * s1, const char * s2);
 char * catdup3(const char * s1, const char * s2, const char * s3);
 char * catdup4(const char * s1, const char * s2, const char * s3, const char * s4);
 char * catdupv(const char * s1, const char * s2, ...);
+char * catdup_array(const char ** array, const char * delimiter);
 
 #endif /* #ifndef CATDUP_H__D42302F1_4D96_4EE4_AC09_E97ED5748277__INCLUDED */

gui/about.c

@@ -35,6 +35,7 @@
 #include "version.h"
 
 #include "../common/file.h"
+#include "../common/catdup.h"
 
 #define ABOUT_DIALOG_LOGO     "ladish-logo-128x128.png"
 
@@ -42,8 +43,30 @@ void show_about(void)
 {
   GtkWidget * dialog;
   GdkPixbuf * pixbuf;
-  const char * authors[] = {_("Nedko Arnaudov"), _("Nikita Zlobin"), _("Filipe Alexandre Lopes Coelho"), NULL};
-  const char * artists[] = {_("Lapo Calamandrei"), _("Nadejda Pancheva-Arnaudova"), NULL};
+  const char * authors[] =
+    {
+      _("Nedko Arnaudov"),
+      _("Nikita Zlobin"),
+      _("Filipe Alexandre Lopes Coelho"),
+      NULL
+    };
+  const char * artists[] =
+    {
+      _("Lapo Calamandrei"),
+      _("Nadejda Pancheva-Arnaudova"),
+      NULL
+    };
+  const char * translators_array[] =
+    {
+      _("Nikita Zlobin"),
+      _("Alexandre Prokoudine"),
+      _("Olivier Humbert"),
+      _("Frank Kober"),
+      _("Maxim Kachur"),
+      _("Jof Thibaut"),
+      NULL,
+    };
+  char * translators;
   char * license;
   struct stat st;
   char timestamp_str[26];
@@ -79,6 +102,12 @@ void show_about(void)
   gtk_about_dialog_set_authors(GTK_ABOUT_DIALOG(dialog), authors);
   gtk_about_dialog_set_artists(GTK_ABOUT_DIALOG(dialog), artists);
 
+  translators = catdup_array(translators_array, "\n");
+  if (translators != NULL)
+  {
+    gtk_about_dialog_set_translator_credits(GTK_ABOUT_DIALOG(dialog), translators);
+  }
+
   gtk_widget_show(dialog);
   gtk_dialog_run(GTK_DIALOG(dialog));
   gtk_widget_hide(dialog);