forked from AuroraMiddleware/gtk
415 lines
12 KiB
C
415 lines
12 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gdkprivate-x11.h"
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#include "gdkdisplay-x11.h"
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <string.h>
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/**
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* gdk_x11_display_text_property_to_text_list:
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* @display: (type GdkX11Display): The `GdkDisplay` where the encoding is defined
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* @encoding: a string representing the encoding. The most
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* common values for this are "STRING", or "COMPOUND_TEXT".
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* This is value used as the type for the property
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* @format: the format of the property
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* @text: The text data
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* @length: The number of items to transform
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* @list: location to store an array of strings in
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* the encoding of the current locale. This array should be
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* freed using gdk_x11_free_text_list().
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*
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* Convert a text string from the encoding as it is stored
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* in a property into an array of strings in the encoding of
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* the current locale. (The elements of the array represent the
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* nul-separated elements of the original text string.)
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*
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* Returns: the number of strings stored in list, or 0,
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* if the conversion failed
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*/
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int
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gdk_x11_display_text_property_to_text_list (GdkDisplay *display,
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const char *encoding,
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int format,
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const guchar *text,
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int length,
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char ***list)
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{
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XTextProperty property;
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int count = 0;
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int res;
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char **local_list;
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g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
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if (list)
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*list = NULL;
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if (gdk_display_is_closed (display))
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return 0;
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property.value = (guchar *)text;
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property.encoding = gdk_x11_get_xatom_by_name_for_display (display, encoding);
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property.format = format;
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property.nitems = length;
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res = XmbTextPropertyToTextList (GDK_DISPLAY_XDISPLAY (display), &property,
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&local_list, &count);
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if (res == XNoMemory || res == XLocaleNotSupported || res == XConverterNotFound)
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return 0;
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else
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{
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if (list)
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*list = local_list;
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else
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XFreeStringList (local_list);
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return count;
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}
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}
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/**
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* gdk_x11_free_text_list:
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* @list: the value stored in the @list parameter by
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* a call to gdk_x11_display_text_property_to_text_list().
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*
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* Frees the array of strings created by
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* gdk_x11_display_text_property_to_text_list().
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*/
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void
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gdk_x11_free_text_list (char **list)
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{
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g_return_if_fail (list != NULL);
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XFreeStringList (list);
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}
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static int
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make_list (const char *text,
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int length,
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gboolean latin1,
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char ***list)
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{
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GSList *strings = NULL;
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int n_strings = 0;
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int i;
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const char *p = text;
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const char *q;
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GSList *tmp_list;
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GError *error = NULL;
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while (p < text + length)
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{
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char *str;
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q = p;
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while (*q && q < text + length)
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q++;
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if (latin1)
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{
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str = g_convert (p, q - p,
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"UTF-8", "ISO-8859-1",
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NULL, NULL, &error);
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if (!str)
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{
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g_warning ("Error converting selection from STRING: %s",
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error->message);
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g_error_free (error);
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}
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}
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else
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{
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str = g_strndup (p, q - p);
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if (!g_utf8_validate (str, -1, NULL))
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{
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g_warning ("Error converting selection from UTF8_STRING");
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g_free (str);
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str = NULL;
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}
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}
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if (str)
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{
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strings = g_slist_prepend (strings, str);
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n_strings++;
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}
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p = q + 1;
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}
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if (list)
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{
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*list = g_new (char *, n_strings + 1);
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(*list)[n_strings] = NULL;
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}
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i = n_strings;
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tmp_list = strings;
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while (tmp_list)
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{
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if (list)
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(*list)[--i] = tmp_list->data;
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else
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g_free (tmp_list->data);
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tmp_list = tmp_list->next;
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}
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g_slist_free (strings);
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return n_strings;
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}
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int
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_gdk_x11_display_text_property_to_utf8_list (GdkDisplay *display,
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const char *encoding,
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int format,
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const guchar *text,
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int length,
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char ***list)
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{
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if (g_str_equal (encoding, "STRING"))
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{
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return make_list ((char *)text, length, TRUE, list);
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}
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else if (g_str_equal (encoding, "UTF8_STRING"))
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{
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return make_list ((char *)text, length, FALSE, list);
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}
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else
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{
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char **local_list;
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int local_count;
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int i;
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const char *charset = NULL;
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gboolean need_conversion = !g_get_charset (&charset);
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int count = 0;
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GError *error = NULL;
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/* Probably COMPOUND text, we fall back to Xlib routines
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*/
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local_count = gdk_x11_display_text_property_to_text_list (display,
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encoding,
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format,
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text,
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length,
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&local_list);
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if (list)
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*list = g_new (char *, local_count + 1);
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for (i=0; i<local_count; i++)
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{
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/* list contains stuff in our default encoding
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*/
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if (need_conversion)
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{
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char *utf = g_convert (local_list[i], -1,
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"UTF-8", charset,
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NULL, NULL, &error);
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if (utf)
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{
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if (list)
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(*list)[count++] = utf;
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else
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g_free (utf);
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}
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else
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{
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g_warning ("Error converting to UTF-8 from '%s': %s",
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charset, error->message);
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g_error_free (error);
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error = NULL;
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}
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}
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else
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{
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if (list)
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{
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if (g_utf8_validate (local_list[i], -1, NULL))
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(*list)[count++] = g_strdup (local_list[i]);
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else
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g_warning ("Error converting selection");
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}
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}
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}
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if (local_count)
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gdk_x11_free_text_list (local_list);
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if (list)
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(*list)[count] = NULL;
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return count;
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}
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}
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/**
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* gdk_x11_display_string_to_compound_text:
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* @display: (type GdkX11Display): the `GdkDisplay` where the encoding is defined
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* @str: a nul-terminated string
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* @encoding: (out) (transfer none): location to store the encoding
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* (to be used as the type for the property)
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* @format: (out): location to store the format of the property
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* @ctext: (out) (array length=length): location to store newly
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* allocated data for the property
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* @length: the length of @ctext, in bytes
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*
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* Convert a string from the encoding of the current
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* locale into a form suitable for storing in a window property.
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*
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* Returns: 0 upon success, non-zero upon failure
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*/
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int
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gdk_x11_display_string_to_compound_text (GdkDisplay *display,
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const char *str,
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const char **encoding,
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int *format,
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guchar **ctext,
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int *length)
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{
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int res;
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XTextProperty property;
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g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
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if (gdk_display_is_closed (display))
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res = XLocaleNotSupported;
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else
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res = XmbTextListToTextProperty (GDK_DISPLAY_XDISPLAY (display),
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(char **)&str, 1, XCompoundTextStyle,
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&property);
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if (res != Success)
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{
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property.encoding = None;
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property.format = None;
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property.value = NULL;
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property.nitems = 0;
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}
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if (encoding)
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*encoding = gdk_x11_get_xatom_name_for_display (display, property.encoding);
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if (format)
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*format = property.format;
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if (ctext)
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*ctext = property.value;
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if (length)
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*length = property.nitems;
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return res;
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}
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/**
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* gdk_x11_display_utf8_to_compound_text:
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* @display: (type GdkX11Display): a `GdkDisplay`
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* @str: a UTF-8 string
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* @encoding: (out) (transfer none): location to store resulting encoding
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* @format: (out): location to store format of the result
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* @ctext: (out) (array length=length): location to store the data of the result
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* @length: location to store the length of the data stored in @ctext
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*
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* Converts from UTF-8 to compound text.
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*
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* Returns: %TRUE if the conversion succeeded, otherwise %FALSE
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*/
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gboolean
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gdk_x11_display_utf8_to_compound_text (GdkDisplay *display,
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const char *str,
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const char **encoding,
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int *format,
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guchar **ctext,
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int *length)
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{
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gboolean need_conversion;
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const char *charset;
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char *locale_str, *tmp_str;
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GError *error = NULL;
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gboolean result;
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g_return_val_if_fail (str != NULL, FALSE);
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g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
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need_conversion = !g_get_charset (&charset);
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tmp_str = gdk_x11_utf8_to_string_target (str, FALSE);
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if (need_conversion)
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{
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locale_str = g_convert (tmp_str, -1,
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charset, "UTF-8",
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NULL, NULL, &error);
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g_free (tmp_str);
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if (!locale_str)
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{
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if (!g_error_matches (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE))
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{
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g_warning ("Error converting from UTF-8 to '%s': %s",
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charset, error->message);
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}
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g_error_free (error);
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if (encoding)
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*encoding = NULL;
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if (format)
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*format = None;
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if (ctext)
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*ctext = NULL;
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if (length)
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*length = 0;
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return FALSE;
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}
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}
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else
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locale_str = tmp_str;
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result = gdk_x11_display_string_to_compound_text (display, locale_str,
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encoding, format,
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ctext, length);
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result = (result == Success? TRUE : FALSE);
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g_free (locale_str);
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return result;
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}
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/**
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* gdk_x11_free_compound_text:
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* @ctext: The pointer stored in @ctext from a call to
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* gdk_x11_display_string_to_compound_text().
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*
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* Frees the data returned from gdk_x11_display_string_to_compound_text().
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*/
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void
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gdk_x11_free_compound_text (guchar *ctext)
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{
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if (ctext)
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XFree (ctext);
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}
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