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-rw-r--r--app/core/gimppalette-load.c702
1 files changed, 702 insertions, 0 deletions
diff --git a/app/core/gimppalette-load.c b/app/core/gimppalette-load.c
new file mode 100644
index 0000000..32a1fc1
--- /dev/null
+++ b/app/core/gimppalette-load.c
@@ -0,0 +1,702 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+
+#include <cairo.h>
+#include <gegl.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpcolor/gimpcolor.h"
+
+#include "core-types.h"
+
+#include "gimp-utils.h"
+#include "gimppalette.h"
+#include "gimppalette-load.h"
+
+#include "gimp-intl.h"
+
+
+GList *
+gimp_palette_load (GimpContext *context,
+ GFile *file,
+ GInputStream *input,
+ GError **error)
+{
+ GimpPalette *palette = NULL;
+ GimpPaletteEntry *entry;
+ GDataInputStream *data_input;
+ gchar *str;
+ gsize str_len;
+ gchar *tok;
+ gint r, g, b;
+ gint linenum;
+
+ g_return_val_if_fail (G_IS_FILE (file), NULL);
+ g_return_val_if_fail (G_IS_INPUT_STREAM (input), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ data_input = g_data_input_stream_new (input);
+
+ r = g = b = 0;
+
+ linenum = 1;
+ str_len = 1024;
+ str = gimp_data_input_stream_read_line_always (data_input, &str_len,
+ NULL, error);
+ if (! str)
+ goto failed;
+
+ if (! g_str_has_prefix (str, "GIMP Palette"))
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Missing magic header."));
+ g_free (str);
+ goto failed;
+ }
+
+ g_free (str);
+
+ palette = g_object_new (GIMP_TYPE_PALETTE,
+ "mime-type", "application/x-gimp-palette",
+ NULL);
+
+ linenum++;
+ str_len = 1024;
+ str = gimp_data_input_stream_read_line_always (data_input, &str_len,
+ NULL, error);
+ if (! str)
+ goto failed;
+
+ if (g_str_has_prefix (str, "Name: "))
+ {
+ gchar *utf8;
+
+ utf8 = gimp_any_to_utf8 (g_strstrip (str + strlen ("Name: ")), -1,
+ _("Invalid UTF-8 string in palette file '%s'"),
+ gimp_file_get_utf8_name (file));
+ gimp_object_take_name (GIMP_OBJECT (palette), utf8);
+ g_free (str);
+
+ linenum++;
+ str_len = 1024;
+ str = gimp_data_input_stream_read_line_always (data_input, &str_len,
+ NULL, error);
+ if (! str)
+ goto failed;
+
+ if (g_str_has_prefix (str, "Columns: "))
+ {
+ gint columns;
+
+ if (! gimp_ascii_strtoi (g_strstrip (str + strlen ("Columns: ")),
+ NULL, 10, &columns))
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Invalid column count."));
+ g_free (str);
+ goto failed;
+ }
+
+ if (columns < 0 || columns > 256)
+ {
+ g_message (_("Reading palette file '%s': "
+ "Invalid number of columns in line %d. "
+ "Using default value."),
+ gimp_file_get_utf8_name (file), linenum);
+ columns = 0;
+ }
+
+ gimp_palette_set_columns (palette, columns);
+ g_free (str);
+
+ linenum++;
+ str_len = 1024;
+ str = gimp_data_input_stream_read_line_always (data_input, &str_len,
+ NULL, error);
+ if (! str)
+ goto failed;
+ }
+ }
+ else /* old palette format */
+ {
+ gimp_object_take_name (GIMP_OBJECT (palette),
+ g_path_get_basename (gimp_file_get_utf8_name (file)));
+ }
+
+ while (str)
+ {
+ GError *my_error = NULL;
+
+ if (str[0] != '#' && str[0] != '\0')
+ {
+ tok = strtok (str, " \t");
+ if (tok)
+ r = atoi (tok);
+ else
+ g_message (_("Reading palette file '%s': "
+ "Missing RED component in line %d."),
+ gimp_file_get_utf8_name (file), linenum);
+
+ tok = strtok (NULL, " \t");
+ if (tok)
+ g = atoi (tok);
+ else
+ g_message (_("Reading palette file '%s': "
+ "Missing GREEN component in line %d."),
+ gimp_file_get_utf8_name (file), linenum);
+
+ tok = strtok (NULL, " \t");
+ if (tok)
+ b = atoi (tok);
+ else
+ g_message (_("Reading palette file '%s': "
+ "Missing BLUE component in line %d."),
+ gimp_file_get_utf8_name (file), linenum);
+
+ /* optional name */
+ tok = strtok (NULL, "\n");
+
+ if (r < 0 || r > 255 ||
+ g < 0 || g > 255 ||
+ b < 0 || b > 255)
+ g_message (_("Reading palette file '%s': "
+ "RGB value out of range in line %d."),
+ gimp_file_get_utf8_name (file), linenum);
+
+ /* don't call gimp_palette_add_entry here, it's rather inefficient */
+ entry = g_slice_new0 (GimpPaletteEntry);
+
+ gimp_rgba_set_uchar (&entry->color,
+ (guchar) r,
+ (guchar) g,
+ (guchar) b,
+ 255);
+
+ entry->name = g_strdup (tok ? tok : _("Untitled"));
+ entry->position = gimp_palette_get_n_colors (palette);
+
+ palette->colors = g_list_prepend (palette->colors, entry);
+ palette->n_colors++;
+ }
+
+ g_free (str);
+
+ linenum++;
+ str_len = 1024;
+ str = g_data_input_stream_read_line (data_input, &str_len,
+ NULL, &my_error);
+ if (! str && my_error)
+ {
+ g_message (_("Reading palette file '%s': "
+ "Read %d colors from truncated file: %s"),
+ gimp_file_get_utf8_name (file),
+ g_list_length (palette->colors),
+ my_error->message);
+ g_clear_error (&my_error);
+ }
+ }
+
+ palette->colors = g_list_reverse (palette->colors);
+
+ g_object_unref (data_input);
+
+ return g_list_prepend (NULL, palette);
+
+ failed:
+
+ g_object_unref (data_input);
+
+ if (palette)
+ g_object_unref (palette);
+
+ g_prefix_error (error, _("In line %d of palette file: "), linenum);
+
+ return NULL;
+}
+
+GList *
+gimp_palette_load_act (GimpContext *context,
+ GFile *file,
+ GInputStream *input,
+ GError **error)
+{
+ GimpPalette *palette;
+ gchar *palette_name;
+ guchar color_bytes[3];
+ gsize bytes_read;
+
+ g_return_val_if_fail (G_IS_FILE (file), NULL);
+ g_return_val_if_fail (G_IS_INPUT_STREAM (input), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ palette_name = g_path_get_basename (gimp_file_get_utf8_name (file));
+ palette = GIMP_PALETTE (gimp_palette_new (context, palette_name));
+ g_free (palette_name);
+
+ while (g_input_stream_read_all (input, color_bytes, sizeof (color_bytes),
+ &bytes_read, NULL, NULL) &&
+ bytes_read == sizeof (color_bytes))
+ {
+ GimpRGB color;
+
+ gimp_rgba_set_uchar (&color,
+ color_bytes[0],
+ color_bytes[1],
+ color_bytes[2],
+ 255);
+ gimp_palette_add_entry (palette, -1, NULL, &color);
+ }
+
+ return g_list_prepend (NULL, palette);
+}
+
+GList *
+gimp_palette_load_riff (GimpContext *context,
+ GFile *file,
+ GInputStream *input,
+ GError **error)
+{
+ GimpPalette *palette;
+ gchar *palette_name;
+ guchar color_bytes[4];
+ gsize bytes_read;
+
+ g_return_val_if_fail (G_IS_FILE (file), NULL);
+ g_return_val_if_fail (G_IS_INPUT_STREAM (input), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ palette_name = g_path_get_basename (gimp_file_get_utf8_name (file));
+ palette = GIMP_PALETTE (gimp_palette_new (context, palette_name));
+ g_free (palette_name);
+
+ if (! g_seekable_seek (G_SEEKABLE (input), 28, G_SEEK_SET, NULL, error))
+ {
+ g_object_unref (palette);
+ return NULL;
+ }
+
+ while (g_input_stream_read_all (input, color_bytes, sizeof (color_bytes),
+ &bytes_read, NULL, NULL) &&
+ bytes_read == sizeof (color_bytes))
+ {
+ GimpRGB color;
+
+ gimp_rgba_set_uchar (&color,
+ color_bytes[0],
+ color_bytes[1],
+ color_bytes[2],
+ 255);
+ gimp_palette_add_entry (palette, -1, NULL, &color);
+ }
+
+ return g_list_prepend (NULL, palette);
+}
+
+GList *
+gimp_palette_load_psp (GimpContext *context,
+ GFile *file,
+ GInputStream *input,
+ GError **error)
+{
+ GimpPalette *palette;
+ gchar *palette_name;
+ guchar color_bytes[4];
+ gint number_of_colors;
+ gsize bytes_read;
+ gint i, j;
+ gboolean color_ok;
+ gchar buffer[4096];
+ /*Maximum valid file size: 256 * 4 * 3 + 256 * 2 ~= 3650 bytes */
+ gchar **lines;
+ gchar **ascii_colors;
+
+ g_return_val_if_fail (G_IS_FILE (file), NULL);
+ g_return_val_if_fail (G_IS_INPUT_STREAM (input), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ palette_name = g_path_get_basename (gimp_file_get_utf8_name (file));
+ palette = GIMP_PALETTE (gimp_palette_new (context, palette_name));
+ g_free (palette_name);
+
+ if (! g_seekable_seek (G_SEEKABLE (input), 16, G_SEEK_SET, NULL, error))
+ {
+ g_object_unref (palette);
+ return NULL;
+ }
+
+ if (! g_input_stream_read_all (input, buffer, sizeof (buffer) - 1,
+ &bytes_read, NULL, error))
+ {
+ g_object_unref (palette);
+ return NULL;
+ }
+
+ buffer[bytes_read] = '\0';
+
+ lines = g_strsplit (buffer, "\x0d\x0a", -1);
+
+ number_of_colors = atoi (lines[0]);
+
+ for (i = 0; i < number_of_colors; i++)
+ {
+ if (lines[i + 1] == NULL)
+ {
+ g_printerr ("Premature end of file reading %s.",
+ gimp_file_get_utf8_name (file));
+ break;
+ }
+
+ ascii_colors = g_strsplit (lines[i + 1], " ", 3);
+ color_ok = TRUE;
+
+ for (j = 0 ; j < 3; j++)
+ {
+ if (ascii_colors[j] == NULL)
+ {
+ g_printerr ("Corrupted palette file %s.",
+ gimp_file_get_utf8_name (file));
+ color_ok = FALSE;
+ break;
+ }
+
+ color_bytes[j] = atoi (ascii_colors[j]);
+ }
+
+ if (color_ok)
+ {
+ GimpRGB color;
+
+ gimp_rgba_set_uchar (&color,
+ color_bytes[0],
+ color_bytes[1],
+ color_bytes[2],
+ 255);
+ gimp_palette_add_entry (palette, -1, NULL, &color);
+ }
+
+ g_strfreev (ascii_colors);
+ }
+
+ g_strfreev (lines);
+
+ return g_list_prepend (NULL, palette);
+}
+
+GList *
+gimp_palette_load_aco (GimpContext *context,
+ GFile *file,
+ GInputStream *input,
+ GError **error)
+{
+ GimpPalette *palette;
+ gchar *palette_name;
+ gint format_version;
+ gint number_of_colors;
+ gint i;
+ gchar header[4];
+ gsize bytes_read;
+
+ g_return_val_if_fail (G_IS_FILE (file), NULL);
+ g_return_val_if_fail (G_IS_INPUT_STREAM (input), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ if (! g_input_stream_read_all (input, header, sizeof (header),
+ &bytes_read, NULL, error) ||
+ bytes_read != sizeof (header))
+ {
+ g_prefix_error (error,
+ _("Could not read header from palette file '%s': "),
+ gimp_file_get_utf8_name (file));
+ return NULL;
+ }
+
+ palette_name = g_path_get_basename (gimp_file_get_utf8_name (file));
+ palette = GIMP_PALETTE (gimp_palette_new (context, palette_name));
+ g_free (palette_name);
+
+ format_version = header[1] + (header[0] << 8);
+ number_of_colors = header[3] + (header[2] << 8);
+
+ for (i = 0; i < number_of_colors; i++)
+ {
+ gchar color_info[10];
+ gint color_space;
+ gint w, x, y, z;
+ gboolean color_ok = FALSE;
+ GimpRGB color;
+ GError *my_error = NULL;
+
+ if (! g_input_stream_read_all (input, color_info, sizeof (color_info),
+ &bytes_read, NULL, &my_error) ||
+ bytes_read != sizeof (color_info))
+ {
+ if (palette->colors)
+ {
+ g_message (_("Reading palette file '%s': "
+ "Read %d colors from truncated file: %s"),
+ gimp_file_get_utf8_name (file),
+ g_list_length (palette->colors),
+ my_error ?
+ my_error->message : _("Premature end of file."));
+ g_clear_error (&my_error);
+ break;
+ }
+
+ g_propagate_error (error, my_error);
+ g_object_unref (palette);
+
+ return NULL;
+ }
+
+ color_space = color_info[1] + (color_info[0] << 8);
+
+ w = (guchar) color_info[3] + ((guchar) color_info[2] << 8);
+ x = (guchar) color_info[5] + ((guchar) color_info[4] << 8);
+ y = (guchar) color_info[7] + ((guchar) color_info[6] << 8);
+ z = (guchar) color_info[9] + ((guchar) color_info[8] << 8);
+
+ if (color_space == 0) /* RGB */
+ {
+ gdouble R = ((gdouble) w) / 65536.0;
+ gdouble G = ((gdouble) x) / 65536.0;
+ gdouble B = ((gdouble) y) / 65536.0;
+
+ gimp_rgba_set (&color, R, G, B, 1.0);
+
+ color_ok = TRUE;
+ }
+ else if (color_space == 1) /* HSV */
+ {
+ GimpHSV hsv;
+
+ gdouble H = ((gdouble) w) / 65536.0;
+ gdouble S = ((gdouble) x) / 65536.0;
+ gdouble V = ((gdouble) y) / 65536.0;
+
+ gimp_hsva_set (&hsv, H, S, V, 1.0);
+ gimp_hsv_to_rgb (&hsv, &color);
+
+ color_ok = TRUE;
+ }
+ else if (color_space == 2) /* CMYK */
+ {
+ GimpCMYK cmyk;
+
+ gdouble C = 1.0 - (((gdouble) w) / 65536.0);
+ gdouble M = 1.0 - (((gdouble) x) / 65536.0);
+ gdouble Y = 1.0 - (((gdouble) y) / 65536.0);
+ gdouble K = 1.0 - (((gdouble) z) / 65536.0);
+
+ gimp_cmyka_set (&cmyk, C, M, Y, K, 1.0);
+ gimp_cmyk_to_rgb (&cmyk, &color);
+
+ color_ok = TRUE;
+ }
+ else if (color_space == 8) /* Grayscale */
+ {
+ gdouble K = 1.0 - (((gdouble) w) / 10000.0);
+
+ gimp_rgba_set (&color, K, K, K, 1.0);
+
+ color_ok = TRUE;
+ }
+ else if (color_space == 9) /* Wide? CMYK */
+ {
+ GimpCMYK cmyk;
+
+ gdouble C = 1.0 - (((gdouble) w) / 10000.0);
+ gdouble M = 1.0 - (((gdouble) x) / 10000.0);
+ gdouble Y = 1.0 - (((gdouble) y) / 10000.0);
+ gdouble K = 1.0 - (((gdouble) z) / 10000.0);
+
+ gimp_cmyka_set (&cmyk, C, M, Y, K, 1.0);
+ gimp_cmyk_to_rgb (&cmyk, &color);
+
+ color_ok = TRUE;
+ }
+ else
+ {
+ g_printerr ("Unsupported color space (%d) in ACO file %s\n",
+ color_space, gimp_file_get_utf8_name (file));
+ }
+
+ if (format_version == 2)
+ {
+ gchar format2_preamble[4];
+ gint number_of_chars;
+
+ if (! g_input_stream_read_all (input,
+ format2_preamble,
+ sizeof (format2_preamble),
+ &bytes_read, NULL, error) ||
+ bytes_read != sizeof (format2_preamble))
+ {
+ g_object_unref (palette);
+ return NULL;
+ }
+
+ number_of_chars = format2_preamble[3] + (format2_preamble[2] << 8);
+
+ if (! g_seekable_seek (G_SEEKABLE (input), number_of_chars * 2,
+ G_SEEK_SET, NULL, error))
+ {
+ g_object_unref (palette);
+ return NULL;
+ }
+ }
+
+ if (color_ok)
+ gimp_palette_add_entry (palette, -1, NULL, &color);
+ }
+
+ return g_list_prepend (NULL, palette);
+}
+
+
+GList *
+gimp_palette_load_css (GimpContext *context,
+ GFile *file,
+ GInputStream *input,
+ GError **error)
+{
+ GimpPalette *palette;
+ GDataInputStream *data_input;
+ gchar *name;
+ GRegex *regex;
+ gchar *buf;
+
+ g_return_val_if_fail (G_IS_FILE (file), NULL);
+ g_return_val_if_fail (G_IS_INPUT_STREAM (input), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ regex = g_regex_new (".*color.*:(?P<param>.*);", G_REGEX_CASELESS, 0, error);
+ if (! regex)
+ return NULL;
+
+ name = g_path_get_basename (gimp_file_get_utf8_name (file));
+ palette = GIMP_PALETTE (gimp_palette_new (context, name));
+ g_free (name);
+
+ data_input = g_data_input_stream_new (input);
+
+ do
+ {
+ gsize buf_len = 1024;
+
+ buf = g_data_input_stream_read_line (data_input, &buf_len, NULL, NULL);
+
+ if (buf)
+ {
+ GMatchInfo *matches;
+
+ if (g_regex_match (regex, buf, 0, &matches))
+ {
+ GimpRGB color;
+ gchar *word = g_match_info_fetch_named (matches, "param");
+
+ if (gimp_rgb_parse_css (&color, word, -1))
+ {
+ if (! gimp_palette_find_entry (palette, &color, NULL))
+ {
+ gimp_palette_add_entry (palette, -1, NULL, &color);
+ }
+ }
+
+ g_free (word);
+ }
+ g_match_info_free (matches);
+ g_free (buf);
+ }
+ }
+ while (buf);
+
+ g_regex_unref (regex);
+ g_object_unref (data_input);
+
+ return g_list_prepend (NULL, palette);
+}
+
+GimpPaletteFileFormat
+gimp_palette_load_detect_format (GFile *file,
+ GInputStream *input)
+{
+ GimpPaletteFileFormat format = GIMP_PALETTE_FILE_FORMAT_UNKNOWN;
+ gchar header[16];
+ gsize bytes_read;
+
+ if (g_input_stream_read_all (input, &header, sizeof (header),
+ &bytes_read, NULL, NULL) &&
+ bytes_read == sizeof (header))
+ {
+ if (g_str_has_prefix (header + 0, "RIFF") &&
+ g_str_has_prefix (header + 8, "PAL data"))
+ {
+ format = GIMP_PALETTE_FILE_FORMAT_RIFF_PAL;
+ }
+ else if (g_str_has_prefix (header, "GIMP Palette"))
+ {
+ format = GIMP_PALETTE_FILE_FORMAT_GPL;
+ }
+ else if (g_str_has_prefix (header, "JASC-PAL"))
+ {
+ format = GIMP_PALETTE_FILE_FORMAT_PSP_PAL;
+ }
+ }
+
+ if (format == GIMP_PALETTE_FILE_FORMAT_UNKNOWN)
+ {
+ gchar *lower = g_ascii_strdown (gimp_file_get_utf8_name (file), -1);
+
+ if (g_str_has_suffix (lower, ".aco"))
+ {
+ format = GIMP_PALETTE_FILE_FORMAT_ACO;
+ }
+ else if (g_str_has_suffix (lower, ".css"))
+ {
+ format = GIMP_PALETTE_FILE_FORMAT_CSS;
+ }
+
+ g_free (lower);
+ }
+
+ if (format == GIMP_PALETTE_FILE_FORMAT_UNKNOWN)
+ {
+ GFileInfo *info = g_file_query_info (file,
+ G_FILE_ATTRIBUTE_STANDARD_SIZE,
+ G_FILE_QUERY_INFO_NONE,
+ NULL, NULL);
+
+ if (info)
+ {
+ goffset size = g_file_info_get_size (info);
+
+ if (size == 768)
+ format = GIMP_PALETTE_FILE_FORMAT_ACT;
+
+ g_object_unref (info);
+ }
+ }
+
+ g_seekable_seek (G_SEEKABLE (input), 0, G_SEEK_SET, NULL, NULL);
+
+ return format;
+}
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