gio/glib-compile-resources.c

   1 /*
   2  * Copyright © 2011 Red Hat, Inc
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the licence, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  *
  17  * Author: Alexander Larsson <alexl@redhat.com>
  18  */
  19
  20 #include "config.h"
  21
  22 #include <glib.h>
  23 #include <gstdio.h>
  24 #include <gi18n.h>
  25 #include <gioenums.h>
  26
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include <locale.h>
  30 #include <errno.h>
  31 #ifdef G_OS_UNIX
  32 #include <unistd.h>
  33 #endif
  34 #ifdef G_OS_WIN32
  35 #include <io.h>
  36 #endif
  37
  38 #include <gio/gmemoryoutputstream.h>
  39 #include <gio/gzlibcompressor.h>
  40 #include <gio/gconverteroutputstream.h>
  41
  42 #include <glib.h>
  43 #include "gvdb/gvdb-builder.h"
  44
  45 #include "gconstructor_as_data.h"
  46
  47 #ifdef G_OS_WIN32
  48 #include "glib/glib-private.h"
  49 #endif
  50
  51 typedef struct
  52 {
  53   char *filename;
  54   char *content;
  55   gsize content_size;
  56   gsize size;
  57   guint32 flags;
  58 } FileData;
  59
  60 typedef struct
  61 {
  62   GHashTable *table; /* resource path -> FileData */
  63
  64   gboolean collect_data;
  65
  66   /* per gresource */
  67   char *prefix;
  68
  69   /* per file */
  70   char *alias;
  71   gboolean compressed;
  72   char *preproc_options;
  73
  74   GString *string;  /* non-NULL when accepting text */
  75 } ParseState;
  76
  77 static gchar **sourcedirs = NULL;
  78 static gchar *xmllint = NULL;
  79 static gchar *gdk_pixbuf_pixdata = NULL;
  80
  81 static void
  82 file_data_free (FileData *data)
  83 {
  84   g_free (data->filename);
  85   g_free (data->content);
  86   g_free (data);
  87 }
  88
  89 static void
  90 start_element (GMarkupParseContext  *context,
  91                const gchar          *element_name,
  92                const gchar         **attribute_names,
  93                const gchar         **attribute_values,
  94                gpointer              user_data,
  95                GError              **error)
  96 {
  97   ParseState *state = user_data;
  98   const GSList *element_stack;
  99   const gchar *container;
 100
 101   element_stack = g_markup_parse_context_get_element_stack (context);
 102   container = element_stack->next ? element_stack->next->data : NULL;
 103
 104 #define COLLECT(first, ...) \
 105   g_markup_collect_attributes (element_name,                                 \
 106                                attribute_names, attribute_values, error,     \
 107                                first, __VA_ARGS__, G_MARKUP_COLLECT_INVALID)
 108 #define OPTIONAL   G_MARKUP_COLLECT_OPTIONAL
 109 #define STRDUP     G_MARKUP_COLLECT_STRDUP
 110 #define STRING     G_MARKUP_COLLECT_STRING
 111 #define BOOL       G_MARKUP_COLLECT_BOOLEAN
 112 #define NO_ATTRS()  COLLECT (G_MARKUP_COLLECT_INVALID, NULL)
 113
 114   if (container == NULL)
 115     {
 116       if (strcmp (element_name, "gresources") == 0)
 117         return;
 118     }
 119   else if (strcmp (container, "gresources") == 0)
 120     {
 121       if (strcmp (element_name, "gresource") == 0)
 122         {
 123           COLLECT (OPTIONAL | STRDUP,
 124                    "prefix", &state->prefix);
 125           return;
 126         }
 127     }
 128   else if (strcmp (container, "gresource") == 0)
 129     {
 130       if (strcmp (element_name, "file") == 0)
 131         {
 132           COLLECT (OPTIONAL | STRDUP, "alias", &state->alias,
 133                    OPTIONAL | BOOL, "compressed", &state->compressed,
 134                    OPTIONAL | STRDUP, "preprocess", &state->preproc_options);
 135           state->string = g_string_new ("");
 136           return;
 137         }
 138     }
 139
 140   if (container)
 141     g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT,
 142                  _("Element <%s> not allowed inside <%s>"),
 143                  element_name, container);
 144   else
 145     g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT,
 146                  _("Element <%s> not allowed at toplevel"), element_name);
 147
 148 }
 149
 150 static GvdbItem *
 151 get_parent (GHashTable *table,
 152             gchar      *key,
 153             gint        length)
 154 {
 155   GvdbItem *grandparent, *parent;
 156
 157   if (length == 1)
 158     return NULL;
 159
 160   while (key[--length - 1] != '/');
 161   key[length] = '\0';
 162
 163   parent = g_hash_table_lookup (table, key);
 164
 165   if (parent == NULL)
 166     {
 167       parent = gvdb_hash_table_insert (table, key);
 168
 169       grandparent = get_parent (table, key, length);
 170
 171       if (grandparent != NULL)
 172         gvdb_item_set_parent (parent, grandparent);
 173     }
 174
 175   return parent;
 176 }
 177
 178 static gchar *
 179 find_file (const gchar *filename)
 180 {
 181   guint i;
 182   gchar *real_file;
 183   gboolean exists;
 184
 185   if (g_path_is_absolute (filename))
 186     return g_strdup (filename);
 187
 188   /* search all the sourcedirs for the correct files in order */
 189   for (i = 0; sourcedirs[i] != NULL; i++)
 190     {
 191         real_file = g_build_path ("/", sourcedirs[i], filename, NULL);
 192         exists = g_file_test (real_file, G_FILE_TEST_EXISTS);
 193         if (exists)
 194           return real_file;
 195         g_free (real_file);
 196     }
 197     return NULL;
 198 }
 199
 200 static void
 201 end_element (GMarkupParseContext  *context,
 202              const gchar          *element_name,
 203              gpointer              user_data,
 204              GError              **error)
 205 {
 206   ParseState *state = user_data;
 207   GError *my_error = NULL;
 208
 209   if (strcmp (element_name, "gresource") == 0)
 210     {
 211       g_free (state->prefix);
 212       state->prefix = NULL;
 213     }
 214
 215   else if (strcmp (element_name, "file") == 0)
 216     {
 217       gchar *file;
 218       gchar *real_file = NULL;
 219       gchar *key;
 220       FileData *data = NULL;
 221       char *tmp_file = NULL;
 222       char *tmp_file2 = NULL;
 223
 224       file = state->string->str;
 225       key = file;
 226       if (state->alias)
 227         key = state->alias;
 228
 229       if (state->prefix)
 230         key = g_build_path ("/", "/", state->prefix, key, NULL);
 231       else
 232         key = g_build_path ("/", "/", key, NULL);
 233
 234       if (g_hash_table_lookup (state->table, key) != NULL)
 235         {
 236           g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT,
 237                        _("File %s appears multiple times in the resource"),
 238                        key);
 239           return;
 240         }
 241
 242       if (sourcedirs != NULL)
 243         {
 244           real_file = find_file (file);
 245           if (real_file == NULL && state->collect_data)
 246             {
 247                 g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
 248                              _("Failed to locate “%s” in any source directory"), file);
 249                 return;
 250             }
 251         }
 252       else
 253         {
 254           gboolean exists;
 255           exists = g_file_test (file, G_FILE_TEST_EXISTS);
 256           if (!exists && state->collect_data)
 257             {
 258               g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
 259                            _("Failed to locate “%s” in current directory"), file);
 260               return;
 261             }
 262         }
 263
 264       if (real_file == NULL)
 265         real_file = g_strdup (file);
 266
 267       data = g_new0 (FileData, 1);
 268       data->filename = g_strdup (real_file);
 269       if (!state->collect_data)
 270         goto done;
 271
 272       if (state->preproc_options)
 273         {
 274           gchar **options;
 275           guint i;
 276           gboolean xml_stripblanks = FALSE;
 277           gboolean to_pixdata = FALSE;
 278
 279           options = g_strsplit (state->preproc_options, ",", -1);
 280
 281           for (i = 0; options[i]; i++)
 282             {
 283               if (!strcmp (options[i], "xml-stripblanks"))
 284                 xml_stripblanks = TRUE;
 285               else if (!strcmp (options[i], "to-pixdata"))
 286                 to_pixdata = TRUE;
 287               else
 288                 {
 289                   g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT,
 290                                _("Unknown processing option “%s”"), options[i]);
 291                   g_strfreev (options);
 292                   goto cleanup;
 293                 }
 294             }
 295           g_strfreev (options);
 296
 297           if (xml_stripblanks && xmllint != NULL)
 298             {
 299               int fd;
 300               GSubprocess *proc;
 301
 302               tmp_file = g_strdup ("resource-XXXXXXXX");
 303               if ((fd = g_mkstemp (tmp_file)) == -1)
 304                 {
 305                   int errsv = errno;
 306
 307                   g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errsv),
 308                                _("Failed to create temp file: %s"),
 309                               g_strerror (errsv));
 310                   g_free (tmp_file);
 311                   tmp_file = NULL;
 312                   goto cleanup;
 313                 }
 314               close (fd);
 315
 316               proc = g_subprocess_new (G_SUBPROCESS_FLAGS_STDOUT_SILENCE, error,
 317                                        xmllint, "--nonet", "--noblanks", "--output", tmp_file, real_file, NULL);
 318               g_free (real_file);
 319               real_file = NULL;
 320
 321               if (!proc)
 322                 goto cleanup;
 323
 324               if (!g_subprocess_wait_check (proc, NULL, error))
 325                 {
 326                   g_object_unref (proc);
 327                   goto cleanup;
 328                 }
 329
 330               g_object_unref (proc);
 331
 332               real_file = g_strdup (tmp_file);
 333             }
 334
 335           if (to_pixdata)
 336             {
 337               int fd;
 338               GSubprocess *proc;
 339
 340               if (gdk_pixbuf_pixdata == NULL)
 341                 {
 342                   g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
 343                                        "to-pixbuf preprocessing requested but GDK_PIXBUF_PIXDATA "
 344                                        "not set and gdk-pixbuf-pixdata not found in path");
 345                   goto cleanup;
 346                 }
 347
 348               tmp_file2 = g_strdup ("resource-XXXXXXXX");
 349               if ((fd = g_mkstemp (tmp_file2)) == -1)
 350                 {
 351                   int errsv = errno;
 352
 353                   g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errsv),
 354                                _("Failed to create temp file: %s"),
 355                                g_strerror (errsv));
 356                   g_free (tmp_file2);
 357                   tmp_file2 = NULL;
 358                   goto cleanup;
 359                 }
 360               close (fd);
 361
 362               proc = g_subprocess_new (G_SUBPROCESS_FLAGS_STDOUT_SILENCE, error,
 363                                        gdk_pixbuf_pixdata, real_file, tmp_file2, NULL);
 364               g_free (real_file);
 365               real_file = NULL;
 366
 367               if (!g_subprocess_wait_check (proc, NULL, error))
 368                 {
 369                   g_object_unref (proc);
 370                   goto cleanup;
 371                 }
 372
 373               g_object_unref (proc);
 374
 375               real_file = g_strdup (tmp_file2);
 376             }
 377         }
 378
 379       if (!g_file_get_contents (real_file, &data->content, &data->size, &my_error))
 380         {
 381           g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT,
 382                        _("Error reading file %s: %s"),
 383                        real_file, my_error->message);
 384           g_clear_error (&my_error);
 385           goto cleanup;
 386         }
 387       /* Include zero termination in content_size for uncompressed files (but not in size) */
 388       data->content_size = data->size + 1;
 389
 390       if (state->compressed)
 391         {
 392           GOutputStream *out = g_memory_output_stream_new (NULL, 0, g_realloc, g_free);
 393           GZlibCompressor *compressor =
 394             g_zlib_compressor_new (G_ZLIB_COMPRESSOR_FORMAT_ZLIB, 9);
 395           GOutputStream *out2 = g_converter_output_stream_new (out, G_CONVERTER (compressor));
 396
 397           if (!g_output_stream_write_all (out2, data->content, data->size,
 398                                           NULL, NULL, NULL) ||
 399               !g_output_stream_close (out2, NULL, NULL))
 400             {
 401               g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT,
 402                            _("Error compressing file %s"),
 403                            real_file);
 404               goto cleanup;
 405             }
 406
 407           g_free (data->content);
 408           data->content_size = g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (out));
 409           data->content = g_memory_output_stream_steal_data (G_MEMORY_OUTPUT_STREAM (out));
 410
 411           g_object_unref (compressor);
 412           g_object_unref (out);
 413           g_object_unref (out2);
 414
 415           data->flags |= G_RESOURCE_FLAGS_COMPRESSED;
 416         }
 417
 418 done:
 419       g_hash_table_insert (state->table, key, data);
 420       data = NULL;
 421
 422     cleanup:
 423       /* Cleanup */
 424
 425       g_free (state->alias);
 426       state->alias = NULL;
 427       g_string_free (state->string, TRUE);
 428       state->string = NULL;
 429       g_free (state->preproc_options);
 430       state->preproc_options = NULL;
 431
 432       g_free (real_file);
 433
 434       if (tmp_file)
 435         {
 436           unlink (tmp_file);
 437           g_free (tmp_file);
 438         }
 439
 440       if (tmp_file2)
 441         {
 442           unlink (tmp_file2);
 443           g_free (tmp_file2);
 444         }
 445
 446       if (data != NULL)
 447         file_data_free (data);
 448     }
 449 }
 450
 451 static void
 452 text (GMarkupParseContext  *context,
 453       const gchar          *text,
 454       gsize                 text_len,
 455       gpointer              user_data,
 456       GError              **error)
 457 {
 458   ParseState *state = user_data;
 459   gsize i;
 460
 461   for (i = 0; i < text_len; i++)
 462     if (!g_ascii_isspace (text[i]))
 463       {
 464         if (state->string)
 465           g_string_append_len (state->string, text, text_len);
 466
 467         else
 468           g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT,
 469                        _("text may not appear inside <%s>"),
 470                        g_markup_parse_context_get_element (context));
 471
 472         break;
 473       }
 474 }
 475
 476 static GHashTable *
 477 parse_resource_file (const gchar *filename,
 478                      gboolean     collect_data,
 479                      GHashTable  *files)
 480 {
 481   GMarkupParser parser = { start_element, end_element, text };
 482   ParseState state = { 0, };
 483   GMarkupParseContext *context;
 484   GError *error = NULL;
 485   gchar *contents;
 486   GHashTable *table = NULL;
 487   gsize size;
 488
 489   if (!g_file_get_contents (filename, &contents, &size, &error))
 490     {
 491       g_printerr ("%s\n", error->message);
 492       g_clear_error (&error);
 493       return NULL;
 494     }
 495
 496   state.collect_data = collect_data;
 497   state.table = g_hash_table_ref (files);
 498
 499   context = g_markup_parse_context_new (&parser,
 500                                         G_MARKUP_TREAT_CDATA_AS_TEXT |
 501                                         G_MARKUP_PREFIX_ERROR_POSITION,
 502                                         &state, NULL);
 503
 504   if (!g_markup_parse_context_parse (context, contents, size, &error) ||
 505       !g_markup_parse_context_end_parse (context, &error))
 506     {
 507       g_printerr ("%s: %s.\n", filename, error->message);
 508       g_clear_error (&error);
 509     }
 510   else
 511     {
 512       GHashTableIter iter;
 513       const char *key;
 514       char *mykey;
 515       gsize key_len;
 516       FileData *data;
 517       GVariant *v_data;
 518       GVariantBuilder builder;
 519       GvdbItem *item;
 520
 521       table = gvdb_hash_table_new (NULL, NULL);
 522
 523       g_hash_table_iter_init (&iter, state.table);
 524       while (g_hash_table_iter_next (&iter, (gpointer *)&key, (gpointer *)&data))
 525         {
 526           key_len = strlen (key);
 527           mykey = g_strdup (key);
 528
 529           item = gvdb_hash_table_insert (table, key);
 530           gvdb_item_set_parent (item,
 531                                 get_parent (table, mykey, key_len));
 532
 533           g_free (mykey);
 534
 535           g_variant_builder_init (&builder, G_VARIANT_TYPE ("(uuay)"));
 536
 537           g_variant_builder_add (&builder, "u", data->size); /* Size */
 538           g_variant_builder_add (&builder, "u", data->flags); /* Flags */
 539
 540           v_data = g_variant_new_from_data (G_VARIANT_TYPE("ay"),
 541                                             data->content, data->content_size, TRUE,
 542                                             g_free, data->content);
 543           g_variant_builder_add_value (&builder, v_data);
 544           data->content = NULL; /* Take ownership */
 545
 546           gvdb_item_set_value (item,
 547                                g_variant_builder_end (&builder));
 548         }
 549     }
 550
 551   g_hash_table_unref (state.table);
 552   g_markup_parse_context_free (context);
 553   g_free (contents);
 554
 555   return table;
 556 }
 557
 558 static gboolean
 559 write_to_file (GHashTable   *table,
 560                const gchar  *filename,
 561                GError      **error)
 562 {
 563   gboolean success;
 564
 565   success = gvdb_table_write_contents (table, filename,
 566                                        G_BYTE_ORDER != G_LITTLE_ENDIAN,
 567                                        error);
 568
 569   return success;
 570 }
 571
 572 static gboolean
 573 extension_in_set (const char *str,
 574                   ...)
 575 {
 576   va_list list;
 577   const char *ext, *value;
 578   gboolean rv = FALSE;
 579
 580   ext = strrchr (str, '.');
 581   if (ext == NULL)
 582     return FALSE;
 583
 584   ext++;
 585   va_start (list, str);
 586   while ((value = va_arg (list, const char *)) != NULL)
 587     {
 588       if (g_ascii_strcasecmp (ext, value) != 0)
 589         continue;
 590
 591       rv = TRUE;
 592       break;
 593     }
 594
 595   va_end (list);
 596   return rv;
 597 }
 598
 599 /*
 600  * We must escape any characters that `make` finds significant.
 601  * This is largely a duplicate of the logic in gcc's `mkdeps.c:munge()`.
 602  */
 603 static char *
 604 escape_makefile_string (const char *string)
 605 {
 606   GString *str;
 607   const char *p, *q;
 608
 609   str = g_string_sized_new (strlen (string) + 1);
 610   for (p = string; *p != '\0'; ++p)
 611     {
 612       switch (*p)
 613         {
 614         case ' ':
 615         case '\t':
 616           /* GNU make uses a weird quoting scheme for white space.
 617              A space or tab preceded by 2N+1 backslashes represents
 618              N backslashes followed by space; a space or tab
 619              preceded by 2N backslashes represents N backslashes at
 620              the end of a file name; and backslashes in other
 621              contexts should not be doubled.  */
 622           for (q = p - 1; string <= q && *q == '\\';  q--)
 623             g_string_append_c (str, '\\');
 624           g_string_append_c (str, '\\');
 625           break;
 626
 627         case '$':
 628           g_string_append_c (str, '$');
 629           break;
 630
 631         case '#':
 632           g_string_append_c (str, '\\');
 633           break;
 634         }
 635       g_string_append_c (str, *p);
 636     }
 637
 638   return g_string_free (str, FALSE);
 639 }
 640
 641 int
 642 main (int argc, char **argv)
 643 {
 644   GError *error;
 645   GHashTable *table;
 646   GHashTable *files;
 647   gchar *srcfile;
 648   gboolean show_version_and_exit = FALSE;
 649   gchar *target = NULL;
 650   gchar *binary_target = NULL;
 651   gboolean generate_automatic = FALSE;
 652   gboolean generate_source = FALSE;
 653   gboolean generate_header = FALSE;
 654   gboolean manual_register = FALSE;
 655   gboolean internal = FALSE;
 656   gboolean generate_dependencies = FALSE;
 657   gboolean generate_phony_targets = FALSE;
 658   char *dependency_file = NULL;
 659   char *c_name = NULL;
 660   char *c_name_no_underscores;
 661   const char *linkage = "extern";
 662   GOptionContext *context;
 663   GOptionEntry entries[] = {
 664     { "version", 0, 0, G_OPTION_ARG_NONE, &show_version_and_exit, N_("Show program version and exit"), NULL },
 665     { "target", 0, 0, G_OPTION_ARG_FILENAME, &target, N_("name of the output file"), N_("FILE") },
 666     { "sourcedir", 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &sourcedirs, N_("The directories where files are to be read from (default to current directory)"), N_("DIRECTORY") },
 667     { "generate", 0, 0, G_OPTION_ARG_NONE, &generate_automatic, N_("Generate output in the format selected for by the target filename extension"), NULL },
 668     { "generate-header", 0, 0, G_OPTION_ARG_NONE, &generate_header, N_("Generate source header"), NULL },
 669     { "generate-source", 0, 0, G_OPTION_ARG_NONE, &generate_source, N_("Generate sourcecode used to link in the resource file into your code"), NULL },
 670     { "generate-dependencies", 0, 0, G_OPTION_ARG_NONE, &generate_dependencies, N_("Generate dependency list"), NULL },
 671     { "dependency-file", 0, 0, G_OPTION_ARG_FILENAME, &dependency_file, N_("name of the dependency file to generate"), N_("FILE") },
 672     { "generate-phony-targets", 0, 0, G_OPTION_ARG_NONE, &generate_phony_targets, N_("Include phony targets in the generated dependency file"), NULL },
 673     { "manual-register", 0, 0, G_OPTION_ARG_NONE, &manual_register, N_("Don’t automatically create and register resource"), NULL },
 674     { "internal", 0, 0, G_OPTION_ARG_NONE, &internal, N_("Don’t export functions; declare them G_GNUC_INTERNAL"), NULL },
 675     { "c-name", 0, 0, G_OPTION_ARG_STRING, &c_name, N_("C identifier name used for the generated source code"), NULL },
 676     { NULL }
 677   };
 678
 679 #ifdef G_OS_WIN32
 680   gchar *tmp;
 681 #endif
 682
 683   setlocale (LC_ALL, "");
 684   textdomain (GETTEXT_PACKAGE);
 685
 686 #ifdef G_OS_WIN32
 687   tmp = _glib_get_locale_dir ();
 688   bindtextdomain (GETTEXT_PACKAGE, tmp);
 689   g_free (tmp);
 690 #else
 691   bindtextdomain (GETTEXT_PACKAGE, GLIB_LOCALE_DIR);
 692 #endif
 693
 694 #ifdef HAVE_BIND_TEXTDOMAIN_CODESET
 695   bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
 696 #endif
 697
 698   context = g_option_context_new (N_("FILE"));
 699   g_option_context_set_translation_domain (context, GETTEXT_PACKAGE);
 700   g_option_context_set_summary (context,
 701     N_("Compile a resource specification into a resource file.\n"
 702        "Resource specification files have the extension .gresource.xml,\n"
 703        "and the resource file have the extension called .gresource."));
 704   g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
 705
 706   error = NULL;
 707   if (!g_option_context_parse (context, &argc, &argv, &error))
 708     {
 709       g_printerr ("%s\n", error->message);
 710       return 1;
 711     }
 712
 713   g_option_context_free (context);
 714
 715   if (show_version_and_exit)
 716     {
 717       g_print (PACKAGE_VERSION "\n");
 718       return 0;
 719     }
 720
 721   if (argc != 2)
 722     {
 723       g_printerr (_("You should give exactly one file name\n"));
 724       g_free (c_name);
 725       return 1;
 726     }
 727
 728   if (internal)
 729     linkage = "G_GNUC_INTERNAL";
 730
 731   srcfile = argv[1];
 732
 733   xmllint = g_strdup (g_getenv ("XMLLINT"));
 734   if (xmllint == NULL)
 735     xmllint = g_find_program_in_path ("xmllint");
 736   if (xmllint == NULL)
 737     g_printerr ("XMLLINT not set and xmllint not found in path; skipping xml preprocessing.\n");
 738
 739   gdk_pixbuf_pixdata = g_strdup (g_getenv ("GDK_PIXBUF_PIXDATA"));
 740   if (gdk_pixbuf_pixdata == NULL)
 741     gdk_pixbuf_pixdata = g_find_program_in_path ("gdk-pixbuf-pixdata");
 742
 743   if (target == NULL)
 744     {
 745       char *dirname = g_path_get_dirname (srcfile);
 746       char *base = g_path_get_basename (srcfile);
 747       char *target_basename;
 748       if (g_str_has_suffix (base, ".xml"))
 749         base[strlen(base) - strlen (".xml")] = 0;
 750
 751       if (generate_source)
 752         {
 753           if (g_str_has_suffix (base, ".gresource"))
 754             base[strlen(base) - strlen (".gresource")] = 0;
 755           target_basename = g_strconcat (base, ".c", NULL);
 756         }
 757       else if (generate_header)
 758         {
 759           if (g_str_has_suffix (base, ".gresource"))
 760             base[strlen(base) - strlen (".gresource")] = 0;
 761           target_basename = g_strconcat (base, ".h", NULL);
 762         }
 763       else
 764         {
 765           if (g_str_has_suffix (base, ".gresource"))
 766             target_basename = g_strdup (base);
 767           else
 768             target_basename = g_strconcat (base, ".gresource", NULL);
 769         }
 770
 771       target = g_build_filename (dirname, target_basename, NULL);
 772       g_free (target_basename);
 773       g_free (dirname);
 774       g_free (base);
 775     }
 776   else if (generate_automatic)
 777     {
 778       if (extension_in_set (target, "c", "cc", "cpp", "cxx", "c++", NULL))
 779         generate_source = TRUE;
 780       else if (extension_in_set (target, "h", "hh", "hpp", "hxx", "h++", NULL))
 781         generate_header = TRUE;
 782       else if (extension_in_set (target, "gresource", NULL))
 783         { }
 784     }
 785
 786   files = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify)file_data_free);
 787
 788   if ((table = parse_resource_file (srcfile, !generate_dependencies, files)) == NULL)
 789     {
 790       g_free (target);
 791       g_free (c_name);
 792       return 1;
 793     }
 794
 795   /* This can be used in the same invocation
 796      as other generate commands */
 797   if (dependency_file != NULL)
 798     {
 799       /* Generate a .d file that describes the dependencies for
 800        * build tools, gcc -M -MF style */
 801       GString *dep_string;
 802       GHashTableIter iter;
 803       gpointer key, data;
 804       FileData *file_data;
 805       char *escaped;
 806
 807       g_hash_table_iter_init (&iter, files);
 808
 809       dep_string = g_string_new (NULL);
 810       escaped = escape_makefile_string (srcfile);
 811       g_string_printf (dep_string, "%s:", escaped);
 812       g_free (escaped);
 813
 814       /* First rule: foo.xml: resource1 resource2.. */
 815       while (g_hash_table_iter_next (&iter, &key, &data))
 816         {
 817           file_data = data;
 818           if (!g_str_equal (file_data->filename, srcfile))
 819             {
 820               escaped = escape_makefile_string (file_data->filename);
 821               g_string_append_printf (dep_string, " %s", escaped);
 822               g_free (escaped);
 823             }
 824         }
 825
 826       g_string_append (dep_string, "\n");
 827
 828       /* Optionally include phony targets as it silences `make` but
 829        * isn't supported on `ninja` at the moment. See also: `gcc -MP`
 830        */
 831       if (generate_phony_targets)
 832         {
 833                                         g_string_append (dep_string, "\n");
 834
 835           /* One rule for every resource: resourceN: */
 836           g_hash_table_iter_init (&iter, files);
 837           while (g_hash_table_iter_next (&iter, &key, &data))
 838             {
 839               file_data = data;
 840               if (!g_str_equal (file_data->filename, srcfile))
 841                 {
 842                   escaped = escape_makefile_string (file_data->filename);
 843                   g_string_append_printf (dep_string, "%s:\n\n", escaped);
 844                   g_free (escaped);
 845                 }
 846             }
 847         }
 848
 849       if (g_str_equal (dependency_file, "-"))
 850         {
 851           g_print ("%s\n", dep_string->str);
 852         }
 853       else
 854         {
 855           if (!g_file_set_contents (dependency_file, dep_string->str, dep_string->len, &error))
 856             {
 857               g_printerr ("Error writing dependency file: %s\n", error->message);
 858               g_string_free (dep_string, TRUE);
 859               g_free (dependency_file);
 860               g_error_free (error);
 861               return 1;
 862             }
 863         }
 864
 865       g_string_free (dep_string, TRUE);
 866       g_free (dependency_file);
 867     }
 868
 869   if (generate_dependencies)
 870     {
 871       GHashTableIter iter;
 872       gpointer key, data;
 873       FileData *file_data;
 874
 875       g_hash_table_iter_init (&iter, files);
 876
 877       /* Generate list of files for direct use as dependencies in a Makefile */
 878       while (g_hash_table_iter_next (&iter, &key, &data))
 879         {
 880           file_data = data;
 881           g_print ("%s\n", file_data->filename);
 882         }
 883     }
 884   else if (generate_source || generate_header)
 885     {
 886       if (generate_source)
 887         {
 888           int fd = g_file_open_tmp (NULL, &binary_target, NULL);
 889           if (fd == -1)
 890             {
 891               g_printerr ("Can't open temp file\n");
 892               g_free (c_name);
 893               return 1;
 894             }
 895           close (fd);
 896         }
 897
 898       if (c_name == NULL)
 899         {
 900           char *base = g_path_get_basename (srcfile);
 901           GString *s;
 902           char *dot;
 903           int i;
 904
 905           /* Remove extensions */
 906           dot = strchr (base, '.');
 907           if (dot)
 908             *dot = 0;
 909
 910           s = g_string_new ("");
 911
 912           for (i = 0; base[i] != 0; i++)
 913             {
 914               const char *first = G_CSET_A_2_Z G_CSET_a_2_z "_";
 915               const char *rest = G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "_";
 916               if (strchr ((i == 0) ? first : rest, base[i]) != NULL)
 917                 g_string_append_c (s, base[i]);
 918               else if (base[i] == '-')
 919                 g_string_append_c (s, '_');
 920
 921             }
 922
 923           c_name = g_string_free (s, FALSE);
 924         }
 925     }
 926   else
 927     binary_target = g_strdup (target);
 928
 929   c_name_no_underscores = c_name;
 930   while (c_name_no_underscores && *c_name_no_underscores == '_')
 931     c_name_no_underscores++;
 932
 933   if (binary_target != NULL &&
 934       !write_to_file (table, binary_target, &error))
 935     {
 936       g_printerr ("%s\n", error->message);
 937       g_free (target);
 938       g_free (c_name);
 939       return 1;
 940     }
 941
 942   if (generate_header)
 943     {
 944       FILE *file;
 945
 946       file = fopen (target, "w");
 947       if (file == NULL)
 948         {
 949           g_printerr ("can't write to file %s", target);
 950           g_free (c_name);
 951           return 1;
 952         }
 953
 954       fprintf (file,
 955                "#ifndef __RESOURCE_%s_H__\n"
 956                "#define __RESOURCE_%s_H__\n"
 957                "\n"
 958                "#include <gio/gio.h>\n"
 959                "\n"
 960                "%s GResource *%s_get_resource (void);\n",
 961                c_name, c_name, linkage, c_name);
 962
 963       if (manual_register)
 964         fprintf (file,
 965                  "\n"
 966                  "%s void %s_register_resource (void);\n"
 967                  "%s void %s_unregister_resource (void);\n"
 968                  "\n",
 969                  linkage, c_name, linkage, c_name);
 970
 971       fprintf (file,
 972                "#endif\n");
 973
 974       fclose (file);
 975     }
 976   else if (generate_source)
 977     {
 978       FILE *file;
 979       guint8 *data;
 980       gsize data_size;
 981       gsize i;
 982
 983       if (!g_file_get_contents (binary_target, (char **)&data,
 984                                 &data_size, NULL))
 985         {
 986           g_printerr ("can't read back temporary file");
 987           g_free (c_name);
 988           return 1;
 989         }
 990       g_unlink (binary_target);
 991
 992       file = fopen (target, "w");
 993       if (file == NULL)
 994         {
 995           g_printerr ("can't write to file %s", target);
 996           g_free (c_name);
 997           return 1;
 998         }
 999
1000       fprintf (file,
1001                "#include <gio/gio.h>\n"
1002                "\n"
1003                "#if defined (__ELF__) && ( __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 6))\n"
1004                "# define SECTION __attribute__ ((section (\".gresource.%s\"), aligned (8)))\n"
1005                "#else\n"
1006                "# define SECTION\n"
1007                "#endif\n"
1008                "\n"
1009                "static const SECTION union { const guint8 data[%"G_GSIZE_FORMAT"]; const double alignment; void * const ptr;}  %s_resource_data = { {\n",
1010                c_name_no_underscores, data_size, c_name);
1011
1012       for (i = 0; i < data_size; i++) {
1013         if (i % 8 == 0)
1014           fprintf (file, "  ");
1015         fprintf (file, "0x%2.2x", (int)data[i]);
1016         if (i != data_size - 1)
1017           fprintf (file, ", ");
1018         if ((i % 8 == 7) || (i == data_size - 1))
1019           fprintf (file, "\n");
1020       }
1021
1022       fprintf (file, "} };\n");
1023
1024       fprintf (file,
1025                "\n"
1026                "static GStaticResource static_resource = { %s_resource_data.data, sizeof (%s_resource_data.data), NULL, NULL, NULL };\n"
1027                "%s GResource *%s_get_resource (void);\n"
1028                "GResource *%s_get_resource (void)\n"
1029                "{\n"
1030                "  return g_static_resource_get_resource (&static_resource);\n"
1031                "}\n",
1032                c_name, c_name, linkage, c_name, c_name);
1033
1034
1035       if (manual_register)
1036         {
1037           fprintf (file,
1038                    "\n"
1039                    "%s void %s_unregister_resource (void);\n"
1040                    "void %s_unregister_resource (void)\n"
1041                    "{\n"
1042                    "  g_static_resource_fini (&static_resource);\n"
1043                    "}\n"
1044                    "\n"
1045                    "%s void %s_register_resource (void);\n"
1046                    "void %s_register_resource (void)\n"
1047                    "{\n"
1048                    "  g_static_resource_init (&static_resource);\n"
1049                    "}\n",
1050                    linkage, c_name, c_name, linkage, c_name, c_name);
1051         }
1052       else
1053         {
1054           fprintf (file, "%s", gconstructor_code);
1055           fprintf (file,
1056                    "\n"
1057                    "#ifdef G_HAS_CONSTRUCTORS\n"
1058                    "\n"
1059                    "#ifdef G_DEFINE_CONSTRUCTOR_NEEDS_PRAGMA\n"
1060                    "#pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(resource_constructor)\n"
1061                    "#endif\n"
1062                    "G_DEFINE_CONSTRUCTOR(resource_constructor)\n"
1063                    "#ifdef G_DEFINE_DESTRUCTOR_NEEDS_PRAGMA\n"
1064                    "#pragma G_DEFINE_DESTRUCTOR_PRAGMA_ARGS(resource_destructor)\n"
1065                    "#endif\n"
1066                    "G_DEFINE_DESTRUCTOR(resource_destructor)\n"
1067                    "\n"
1068                    "#else\n"
1069                    "#warning \"Constructor not supported on this compiler, linking in resources will not work\"\n"
1070                    "#endif\n"
1071                    "\n"
1072                    "static void resource_constructor (void)\n"
1073                    "{\n"
1074                    "  g_static_resource_init (&static_resource);\n"
1075                    "}\n"
1076                    "\n"
1077                    "static void resource_destructor (void)\n"
1078                    "{\n"
1079                    "  g_static_resource_fini (&static_resource);\n"
1080                    "}\n");
1081         }
1082
1083       fclose (file);
1084
1085       g_free (data);
1086     }
1087
1088   g_free (binary_target);
1089   g_free (target);
1090   g_hash_table_destroy (table);
1091   g_free (xmllint);
1092   g_free (c_name);
1093
1094   return 0;
1095 }