--- /dev/null
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2009 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Alexander Larsson <alexl@redhat.com>
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <locale.h>
+#include <errno.h>
+
+#include <glib.h>
+#include <gio/gio.h>
+
+static gchar **locations = NULL;
+static char *from_charset = NULL;
+static char *to_charset = NULL;
+static gboolean decompress = FALSE;
+static gboolean compress = FALSE;
+static gboolean gzip = FALSE;
+static gboolean fallback = FALSE;
+
+static GOptionEntry entries[] = {
+ {"decompress", 0, 0, G_OPTION_ARG_NONE, &decompress, "decompress", NULL},
+ {"compress", 0, 0, G_OPTION_ARG_NONE, &compress, "compress", NULL},
+ {"gzip", 0, 0, G_OPTION_ARG_NONE, &gzip, "use gzip format", NULL},
+ {"from-charset", 0, 0, G_OPTION_ARG_STRING, &from_charset, "from charset", NULL},
+ {"to-charset", 0, 0, G_OPTION_ARG_STRING, &to_charset, "to charset", NULL},
+ {"fallback", 0, 0, G_OPTION_ARG_NONE, &fallback, "use fallback", NULL},
+ {G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &locations, "locations", NULL},
+ {NULL}
+};
+
+static void
+cat (GFile * file)
+{
+ GInputStream *in;
+ char buffer[1024 * 8 + 1];
+ char *p;
+ gssize res;
+ gboolean close_res;
+ GError *error;
+ GConverter *conv;
+ GCharsetConverter *cconv = NULL;
+
+ error = NULL;
+ in = (GInputStream *) g_file_read (file, NULL, &error);
+ if (in == NULL)
+ {
+ /* Translators: the first %s is the program name, the second one */
+ /* is the URI of the file, the third is the error message. */
+ g_printerr ("%s: %s: error opening file: %s\n",
+ g_get_prgname (), g_file_get_uri (file), error->message);
+ g_error_free (error);
+ return;
+ }
+
+ if (decompress)
+ {
+ GInputStream *old;
+ conv = (GConverter *)g_zlib_decompressor_new (gzip?G_ZLIB_COMPRESSOR_FORMAT_GZIP:G_ZLIB_COMPRESSOR_FORMAT_RAW);
+ old = in;
+ in = (GInputStream *) g_converter_input_stream_new (in, conv);
+ g_object_unref (conv);
+ g_object_unref (old);
+ }
+
+ if (from_charset && to_charset)
+ {
+ cconv = g_charset_converter_new (to_charset, from_charset, &error);
+ conv = (GConverter *)cconv;
+ if (conv)
+ {
+ GInputStream *old;
+
+ g_charset_converter_set_use_fallback (cconv, fallback);
+
+ old = in;
+ in = (GInputStream *) g_converter_input_stream_new (in, conv);
+ g_object_unref (conv);
+ g_object_unref (old);
+ }
+ else
+ {
+ g_printerr ("%s: Can't convert between charsets: %s\n",
+ g_get_prgname (), error->message);
+ }
+ }
+
+ if (compress)
+ {
+ GInputStream *old;
+ conv = (GConverter *)g_zlib_compressor_new (gzip?G_ZLIB_COMPRESSOR_FORMAT_GZIP:G_ZLIB_COMPRESSOR_FORMAT_RAW, -1);
+ old = in;
+ in = (GInputStream *) g_converter_input_stream_new (in, conv);
+ g_object_unref (conv);
+ g_object_unref (old);
+ }
+
+ while (1)
+ {
+ res =
+ g_input_stream_read (in, buffer, sizeof (buffer) - 1, NULL, &error);
+ if (res > 0)
+ {
+ ssize_t written;
+
+ p = buffer;
+ while (res > 0)
+ {
+ written = write (STDOUT_FILENO, p, res);
+
+ if (written == -1 && errno != EINTR)
+ {
+ /* Translators: the first %s is the program name, the */
+ /* second one is the URI of the file. */
+ g_printerr ("%s: %s, error writing to stdout",
+ g_get_prgname (), g_file_get_uri (file));
+ goto out;
+ }
+ res -= written;
+ p += written;
+ }
+ }
+ else if (res < 0)
+ {
+ g_printerr ("%s: %s: error reading: %s\n",
+ g_get_prgname (), g_file_get_uri (file),
+ error->message);
+ g_error_free (error);
+ error = NULL;
+ break;
+ }
+ else if (res == 0)
+ break;
+ }
+
+ out:
+
+ close_res = g_input_stream_close (in, NULL, &error);
+ if (!close_res)
+ {
+ g_printerr ("%s: %s:error closing: %s\n",
+ g_get_prgname (), g_file_get_uri (file), error->message);
+ g_error_free (error);
+ }
+
+ if (cconv != NULL && fallback)
+ {
+ guint num = g_charset_converter_get_num_fallbacks (cconv);
+ if (num > 0)
+ g_printerr ("Number of fallback errors: %u\n", num);
+ }
+}
+
+int
+main (int argc, char *argv[])
+{
+ GError *error = NULL;
+ GOptionContext *context = NULL;
+ GFile *file;
+ int i;
+
+ g_type_init ();
+
+ context =
+ g_option_context_new ("LOCATION... - concatenate LOCATIONS "
+ "to standard output.");
+
+ g_option_context_set_summary (context, "filter files");
+
+ g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
+ g_option_context_parse (context, &argc, &argv, &error);
+
+ g_option_context_free (context);
+
+ if (error != NULL)
+ {
+ g_printerr ("Error parsing commandline options: %s\n", error->message);
+ g_printerr ("\n");
+ g_printerr ("Try \"%s --help\" for more information.",
+ g_get_prgname ());
+ g_printerr ("\n");
+ g_error_free(error);
+ return 1;
+ }
+
+ if (!locations)
+ {
+ g_printerr ("%s: missing locations", g_get_prgname ());
+ g_printerr ("\n");
+ g_printerr ("Try \"%s --help\" for more information.",
+ g_get_prgname ());
+ g_printerr ("\n");
+ return 1;
+ }
+
+ i = 0;
+
+ do
+ {
+ file = g_file_new_for_commandline_arg (locations[i]);
+ cat (file);
+ g_object_unref (file);
+ }
+ while (locations[++i] != NULL);
+
+ return 0;
+}
projects / dana / cg-glib.git / blobdiff