mirror of https://github.com/GNOME/gimp.git
117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gio/gio.h>
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#include "libgimpbase/gimpbase.h"
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#include "xcf-read.h"
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#include "gimp-intl.h"
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#define MAX_XCF_STRING_LEN (16L * 1024 * 1024)
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guint
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xcf_read_int32 (GInputStream *input,
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guint32 *data,
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gint count)
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{
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guint total = 0;
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if (count > 0)
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{
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total += xcf_read_int8 (input, (guint8 *) data, count * 4);
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while (count--)
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{
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*data = g_ntohl (*data);
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data++;
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}
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}
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return total;
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}
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guint
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xcf_read_float (GInputStream *input,
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gfloat *data,
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gint count)
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{
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return xcf_read_int32 (input, (guint32 *) ((void *) data), count);
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}
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guint
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xcf_read_int8 (GInputStream *input,
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guint8 *data,
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gint count)
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{
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gsize bytes_read;
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g_input_stream_read_all (input, data, count,
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&bytes_read, NULL, NULL);
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return bytes_read;
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}
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guint
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xcf_read_string (GInputStream *input,
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gchar **data,
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gint count)
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{
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guint total = 0;
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gint i;
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for (i = 0; i < count; i++)
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{
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guint32 tmp;
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total += xcf_read_int32 (input, &tmp, 1);
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if (tmp > MAX_XCF_STRING_LEN)
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{
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g_warning ("Maximum string length (%ld bytes) exceeded. "
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"Possibly corrupt XCF file.", MAX_XCF_STRING_LEN);
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data[i] = NULL;
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}
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else if (tmp > 0)
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{
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gchar *str;
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str = g_new (gchar, tmp);
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total += xcf_read_int8 (input, (guint8*) str, tmp);
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if (str[tmp - 1] != '\0')
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str[tmp - 1] = '\0';
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data[i] = gimp_any_to_utf8 (str, -1,
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_("Invalid UTF-8 string in XCF file"));
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g_free (str);
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}
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else
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{
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data[i] = NULL;
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}
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}
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return total;
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}
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