Add theme validator

Recursively loads a given theme file.

meson.build

@@ -28,6 +28,7 @@ endif
 
 prefix = get_option('prefix')
 
+bindir = join_paths(prefix, get_option('bindir'))
 datadir = join_paths(prefix, get_option('datadir'))
 libdir = join_paths(prefix, get_option('libdir'))
 girdir = join_paths(prefix, join_paths(datadir, 'gir-1.0'))
@@ -90,6 +91,7 @@ endif
 global_c_args = [
   '-DFEEDBACKD_THEME_DIR="@0@"'.format(feedbackd_theme_dir),
   '-DLIBFEEDBACK_COMPILATION',
+  '-DFBD_VERSION="@0@"'.format(meson.project_version()),
 ]
 
 add_project_arguments(

src/fbd-theme-validate.c

@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2022 Guido Günther
+ *
+ * SPDX-License-Identifier: GPL-3.0+
+ */
+
+#define G_LOG_DOMAIN "fbd"
+
+#include "fbd-theme-expander.h"
+
+#include <gio/gio.h>
+
+#define BLURP "- A validator for feedback themes"
+
+static void
+print_version (void)
+{
+  g_print ("%s %s " BLURP "\n", g_get_prgname(), FBD_VERSION);
+  exit (0);
+}
+
+static void
+log_handler (const gchar   *log_domain,
+             GLogLevelFlags log_level,
+             const gchar   *message,
+             gpointer       user_data)
+{
+  g_print ("%s\n", message);
+}
+
+
+int main(int argc, char *argv[])
+{
+  g_autoptr (GError) err = NULL;
+  g_autoptr (GOptionContext) opt_context = NULL;
+  g_autoptr (FbdThemeExpander) expander = NULL;
+  g_autoptr (FbdFeedbackTheme) theme = NULL;
+  g_autofree char *theme_file = NULL;
+  const char *compatible = NULL;
+  gboolean version = FALSE;
+  GStrv args = NULL;
+  const char *compatibles[] = { NULL, NULL };
+  int ret = EXIT_FAILURE;
+
+  const GOptionEntry options [] = {
+    {"version", 0, 0, G_OPTION_ARG_NONE, &version,
+     "Show version information", NULL},
+    {"compatible", 0, 0, G_OPTION_ARG_STRING, &compatible,
+     "The device compatible", NULL},
+    { G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &args, NULL, NULL },
+    G_OPTION_ENTRY_NULL,
+  };
+
+  opt_context = g_option_context_new ("THEME-FILE " BLURP);
+  g_option_context_add_main_entries (opt_context, options, NULL);
+  if (!g_option_context_parse (opt_context, &argc, &argv, &err)) {
+    g_warning ("%s", err->message);
+    g_clear_error (&err);
+    return 1;
+  }
+
+  if (version) {
+    print_version ();
+  }
+
+  g_log_set_handler ("fbd-theme-expander", G_LOG_LEVEL_INFO | G_LOG_FLAG_RECURSION,
+                     log_handler, NULL);
+
+  if (!args) {
+    g_printerr ("%s: No theme file given\n", g_get_prgname ());
+    g_printerr ("Try \"%s --help\" for more information.", g_get_prgname ());
+    g_printerr ("\n");
+    return 1;
+  }
+
+  compatibles[0] = compatible;
+  theme_file = *args;
+  expander = fbd_theme_expander_new (compatibles, NULL, theme_file);
+  theme = fbd_theme_expander_load_theme_files (expander, &err);
+  if (theme == NULL) {
+    g_printerr ("Validation of '%s' failed \n\n", theme_file);
+    g_printerr ("error: %s\n\n", err->message);
+  } else {
+    g_print ("Validation successful.\n");
+    ret = EXIT_SUCCESS;
+  }
+
+  return ret;
+}

src/meson.build

@@ -80,4 +80,13 @@ executable(
   install_dir: libexecdir,
 )
 
+executable(
+  'fbd-theme-validate',
+  sources : ['fbd-theme-validate.c'],
+  include_directories : fbd_inc,
+  dependencies : fbd_dep,
+  install : true,
+  install_dir: bindir,
+)
+
 endif