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gimp/app/core/gimp-units.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-1999 Spencer Kimball and Peter Mattis
*
* gimpunit.c
* Copyright (C) 1999-2000 Michael Natterer <mitch@gimp.org>
*
* 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 <http://www.gnu.org/licenses/>.
*/
/* This file contains functions to load & save the file containing the
* user-defined size units, when the application starts/finished.
*/
#include "config.h"
#include <gio/gio.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpconfig/gimpconfig.h"
#include "core-types.h"
#include "gimp.h"
#include "gimp-units.h"
#include "gimpunit.h"
#include "config/gimpconfig-file.h"
#include "gimp-intl.h"
/*
* All deserialize functions return G_TOKEN_LEFT_PAREN on success,
* or the GTokenType they would have expected but didn't get.
*/
static GTokenType gimp_unitrc_unit_info_deserialize (GScanner *scanner,
Gimp *gimp);
void
gimp_units_init (Gimp *gimp)
{
g_return_if_fail (GIMP_IS_GIMP (gimp));
gimp->user_units = NULL;
gimp->n_user_units = 0;
}
void
gimp_units_exit (Gimp *gimp)
{
g_return_if_fail (GIMP_IS_GIMP (gimp));
gimp_user_units_free (gimp);
}
/* unitrc functions **********/
enum
{
UNIT_INFO = 1,
UNIT_FACTOR,
UNIT_DIGITS,
UNIT_SYMBOL,
UNIT_ABBREV,
UNIT_SINGULAR,
UNIT_PLURAL
};
void
gimp_unitrc_load (Gimp *gimp)
{
gchar *filename;
GScanner *scanner;
GTokenType token;
GError *error = NULL;
g_return_if_fail (GIMP_IS_GIMP (gimp));
filename = gimp_personal_rc_file ("unitrc");
if (gimp->be_verbose)
g_print ("Parsing '%s'\n", gimp_filename_to_utf8 (filename));
scanner = gimp_scanner_new_file (filename, &error);
if (! scanner && error->code == GIMP_CONFIG_ERROR_OPEN_ENOENT)
{
g_clear_error (&error);
g_free (filename);
filename = g_build_filename (gimp_sysconf_directory (), "unitrc", NULL);
scanner = gimp_scanner_new_file (filename, NULL);
}
if (! scanner)
{
g_clear_error (&error);
g_free (filename);
return;
}
g_scanner_scope_add_symbol (scanner, 0,
"unit-info", GINT_TO_POINTER (UNIT_INFO));
g_scanner_scope_add_symbol (scanner, UNIT_INFO,
"factor", GINT_TO_POINTER (UNIT_FACTOR));
g_scanner_scope_add_symbol (scanner, UNIT_INFO,
"digits", GINT_TO_POINTER (UNIT_DIGITS));
g_scanner_scope_add_symbol (scanner, UNIT_INFO,
"symbol", GINT_TO_POINTER (UNIT_SYMBOL));
g_scanner_scope_add_symbol (scanner, UNIT_INFO,
"abbreviation", GINT_TO_POINTER (UNIT_ABBREV));
g_scanner_scope_add_symbol (scanner, UNIT_INFO,
"singular", GINT_TO_POINTER (UNIT_SINGULAR));
g_scanner_scope_add_symbol (scanner, UNIT_INFO,
"plural", GINT_TO_POINTER (UNIT_PLURAL));
token = G_TOKEN_LEFT_PAREN;
while (g_scanner_peek_next_token (scanner) == token)
{
token = g_scanner_get_next_token (scanner);
switch (token)
{
case G_TOKEN_LEFT_PAREN:
token = G_TOKEN_SYMBOL;
break;
case G_TOKEN_SYMBOL:
if (scanner->value.v_symbol == GINT_TO_POINTER (UNIT_INFO))
{
g_scanner_set_scope (scanner, UNIT_INFO);
token = gimp_unitrc_unit_info_deserialize (scanner, gimp);
if (token == G_TOKEN_RIGHT_PAREN)
g_scanner_set_scope (scanner, 0);
}
break;
case G_TOKEN_RIGHT_PAREN:
token = G_TOKEN_LEFT_PAREN;
break;
default: /* do nothing */
break;
}
}
if (token != G_TOKEN_LEFT_PAREN)
{
g_scanner_get_next_token (scanner);
g_scanner_unexp_token (scanner, token, NULL, NULL, NULL,
_("fatal parse error"), TRUE);
gimp_message_literal (gimp, NULL, GIMP_MESSAGE_ERROR, error->message);
g_clear_error (&error);
gimp_config_file_backup_on_error (filename, "unitrc", NULL);
}
gimp_scanner_destroy (scanner);
g_free (filename);
}
void
gimp_unitrc_save (Gimp *gimp)
{
GimpConfigWriter *writer;
gchar *filename;
gint i;
GError *error = NULL;
g_return_if_fail (GIMP_IS_GIMP (gimp));
filename = gimp_personal_rc_file ("unitrc");
if (gimp->be_verbose)
g_print ("Writing '%s'\n", gimp_filename_to_utf8 (filename));
writer =
gimp_config_writer_new_file (filename,
TRUE,
"GIMP units\n\n"
"This file contains the user unit database. "
"You can edit this list with the unit "
"editor. You are not supposed to edit it "
"manually, but of course you can do.\n"
"This file will be entirely rewritten each "
"time you exit.",
NULL);
g_free (filename);
if (!writer)
return;
/* save user defined units */
for (i = _gimp_unit_get_number_of_built_in_units (gimp);
i < _gimp_unit_get_number_of_units (gimp);
i++)
{
if (_gimp_unit_get_deletion_flag (gimp, i) == FALSE)
{
gchar buf[G_ASCII_DTOSTR_BUF_SIZE];
gimp_config_writer_open (writer, "unit-info");
gimp_config_writer_string (writer,
_gimp_unit_get_identifier (gimp, i));
gimp_config_writer_open (writer, "factor");
gimp_config_writer_print (writer,
g_ascii_formatd (buf, sizeof (buf), "%f",
_gimp_unit_get_factor (gimp, i)),
-1);
gimp_config_writer_close (writer);
gimp_config_writer_open (writer, "digits");
gimp_config_writer_printf (writer,
"%d", _gimp_unit_get_digits (gimp, i));
gimp_config_writer_close (writer);
gimp_config_writer_open (writer, "symbol");
gimp_config_writer_string (writer,
_gimp_unit_get_symbol (gimp, i));
gimp_config_writer_close (writer);
gimp_config_writer_open (writer, "abbreviation");
gimp_config_writer_string (writer,
_gimp_unit_get_abbreviation (gimp, i));
gimp_config_writer_close (writer);
gimp_config_writer_open (writer, "singular");
gimp_config_writer_string (writer,
_gimp_unit_get_singular (gimp, i));
gimp_config_writer_close (writer);
gimp_config_writer_open (writer, "plural");
gimp_config_writer_string (writer,
_gimp_unit_get_plural (gimp, i));
gimp_config_writer_close (writer);
gimp_config_writer_close (writer);
}
}
if (! gimp_config_writer_finish (writer, "end of units", &error))
{
gimp_message_literal (gimp, NULL, GIMP_MESSAGE_ERROR, error->message);
g_clear_error (&error);
}
}
/* private functions */
static GTokenType
gimp_unitrc_unit_info_deserialize (GScanner *scanner,
Gimp *gimp)
{
gchar *identifier = NULL;
gdouble factor = 1.0;
gint digits = 2.0;
gchar *symbol = NULL;
gchar *abbreviation = NULL;
gchar *singular = NULL;
gchar *plural = NULL;
GTokenType token;
if (! gimp_scanner_parse_string (scanner, &identifier))
return G_TOKEN_STRING;
token = G_TOKEN_LEFT_PAREN;
while (g_scanner_peek_next_token (scanner) == token)
{
token = g_scanner_get_next_token (scanner);
switch (token)
{
case G_TOKEN_LEFT_PAREN:
token = G_TOKEN_SYMBOL;
break;
case G_TOKEN_SYMBOL:
switch (GPOINTER_TO_INT (scanner->value.v_symbol))
{
case UNIT_FACTOR:
token = G_TOKEN_FLOAT;
if (! gimp_scanner_parse_float (scanner, &factor))
goto cleanup;
break;
case UNIT_DIGITS:
token = G_TOKEN_INT;
if (! gimp_scanner_parse_int (scanner, &digits))
goto cleanup;
break;
case UNIT_SYMBOL:
token = G_TOKEN_STRING;
if (! gimp_scanner_parse_string (scanner, &symbol))
goto cleanup;
break;
case UNIT_ABBREV:
token = G_TOKEN_STRING;
if (! gimp_scanner_parse_string (scanner, &abbreviation))
goto cleanup;
break;
case UNIT_SINGULAR:
token = G_TOKEN_STRING;
if (! gimp_scanner_parse_string (scanner, &singular))
goto cleanup;
break;
case UNIT_PLURAL:
token = G_TOKEN_STRING;
if (! gimp_scanner_parse_string (scanner, &plural))
goto cleanup;
break;
default:
break;
}
token = G_TOKEN_RIGHT_PAREN;
break;
case G_TOKEN_RIGHT_PAREN:
token = G_TOKEN_LEFT_PAREN;
break;
default:
break;
}
}
if (token == G_TOKEN_LEFT_PAREN)
{
token = G_TOKEN_RIGHT_PAREN;
if (g_scanner_peek_next_token (scanner) == token)
{
GimpUnit unit = _gimp_unit_new (gimp,
identifier, factor, digits,
symbol, abbreviation,
singular, plural);
/* make the unit definition persistent */
_gimp_unit_set_deletion_flag (gimp, unit, FALSE);
}
}
cleanup:
g_free (identifier);
g_free (symbol);
g_free (abbreviation);
g_free (singular);
g_free (plural);
return token;
}
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