mirror of
https://github.com/MidnightCommander/mc
synced 2024-12-23 04:46:55 +03:00
7257f794d2
Add section for forward declarations of local functions. This section is
located before file scope variables because functions can be used in
strucutres (see find.c for example):
/*** forward declarations (file scope functions) *************************************************/
/* button callbacks */
static int start_stop (WButton * button, int action);
static int find_do_view_file (WButton * button, int action);
static int find_do_edit_file (WButton * button, int action);
/*** file scope variables ************************************************************************/
static struct
{
...
bcback_fn callback;
} fbuts[] =
{
...
{ B_STOP, NORMAL_BUTTON, N_("S&uspend"), 0, 0, NULL, start_stop },
...
{ B_VIEW, NORMAL_BUTTON, N_("&View - F3"), 0, 0, NULL, find_do_view_file },
{ B_VIEW, NORMAL_BUTTON, N_("&Edit - F4"), 0, 0, NULL, find_do_edit_file }
};
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
1522 lines
40 KiB
C
1522 lines
40 KiB
C
/*
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UTF-8 strings utilities
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Copyright (C) 2007-2023
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Free Software Foundation, Inc.
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Written by:
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Rostislav Benes, 2007
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This file is part of the Midnight Commander.
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The Midnight Commander is free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of the License,
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or (at your option) any later version.
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The Midnight Commander 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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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 <stdlib.h>
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#include <langinfo.h>
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#include <limits.h> /* MB_LEN_MAX */
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#include <string.h>
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#include "lib/global.h"
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#include "lib/strutil.h"
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/* using function for utf-8 from glib */
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/*** global variables ****************************************************************************/
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/*** file scope macro definitions ****************************************************************/
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/*** file scope type declarations ****************************************************************/
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struct utf8_tool
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{
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char *actual;
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size_t remain;
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const char *checked;
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int ident;
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gboolean compose;
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};
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struct term_form
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{
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char text[BUF_MEDIUM * MB_LEN_MAX];
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size_t width;
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gboolean compose;
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};
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/*** forward declarations (file scope functions) *************************************************/
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/*** file scope variables ************************************************************************/
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static const char replch[] = "\xEF\xBF\xBD";
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/* --------------------------------------------------------------------------------------------- */
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/*** file scope functions ************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_unichar_iscombiningmark (gunichar uni)
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{
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GUnicodeType type;
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type = g_unichar_type (uni);
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return (type == G_UNICODE_SPACING_MARK)
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|| (type == G_UNICODE_ENCLOSING_MARK) || (type == G_UNICODE_NON_SPACING_MARK);
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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str_utf8_insert_replace_char (GString * buffer)
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{
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g_string_append (buffer, replch);
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_utf8_is_valid_string (const char *text)
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{
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return g_utf8_validate (text, -1, NULL);
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}
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/* --------------------------------------------------------------------------------------------- */
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static int
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str_utf8_is_valid_char (const char *ch, size_t size)
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{
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switch (g_utf8_get_char_validated (ch, size))
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{
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case (gunichar) (-2):
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return (-2);
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case (gunichar) (-1):
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return (-1);
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default:
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return 1;
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}
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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str_utf8_cnext_char (const char **text)
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{
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(*text) = g_utf8_next_char (*text);
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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str_utf8_cprev_char (const char **text)
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{
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(*text) = g_utf8_prev_char (*text);
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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str_utf8_cnext_char_safe (const char **text)
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{
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if (str_utf8_is_valid_char (*text, -1) == 1)
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(*text) = g_utf8_next_char (*text);
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else
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(*text)++;
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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str_utf8_cprev_char_safe (const char **text)
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{
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const char *result, *t;
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result = g_utf8_prev_char (*text);
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t = result;
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str_utf8_cnext_char_safe (&t);
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if (t == *text)
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(*text) = result;
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else
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(*text)--;
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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str_utf8_fix_string (char *text)
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{
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while (text[0] != '\0')
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{
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gunichar uni;
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uni = g_utf8_get_char_validated (text, -1);
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if ((uni != (gunichar) (-1)) && (uni != (gunichar) (-2)))
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text = g_utf8_next_char (text);
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else
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{
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text[0] = '?';
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text++;
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}
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}
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_utf8_isspace (const char *text)
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{
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gunichar uni;
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uni = g_utf8_get_char_validated (text, -1);
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return g_unichar_isspace (uni);
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_utf8_ispunct (const char *text)
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{
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gunichar uni;
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uni = g_utf8_get_char_validated (text, -1);
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return g_unichar_ispunct (uni);
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_utf8_isalnum (const char *text)
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{
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gunichar uni;
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uni = g_utf8_get_char_validated (text, -1);
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return g_unichar_isalnum (uni);
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_utf8_isdigit (const char *text)
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{
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gunichar uni;
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uni = g_utf8_get_char_validated (text, -1);
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return g_unichar_isdigit (uni);
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_utf8_isprint (const char *ch)
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{
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gunichar uni;
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uni = g_utf8_get_char_validated (ch, -1);
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return g_unichar_isprint (uni);
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_utf8_iscombiningmark (const char *ch)
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{
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gunichar uni;
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uni = g_utf8_get_char_validated (ch, -1);
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return str_unichar_iscombiningmark (uni);
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}
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/* --------------------------------------------------------------------------------------------- */
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static int
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str_utf8_cnext_noncomb_char (const char **text)
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{
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int count = 0;
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while ((*text)[0] != '\0')
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{
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str_utf8_cnext_char_safe (text);
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count++;
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if (!str_utf8_iscombiningmark (*text))
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break;
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}
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return count;
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}
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/* --------------------------------------------------------------------------------------------- */
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static int
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str_utf8_cprev_noncomb_char (const char **text, const char *begin)
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{
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int count = 0;
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while ((*text) != begin)
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{
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str_utf8_cprev_char_safe (text);
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count++;
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if (!str_utf8_iscombiningmark (*text))
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break;
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}
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return count;
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_utf8_toupper (const char *text, char **out, size_t * remain)
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{
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gunichar uni;
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size_t left;
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uni = g_utf8_get_char_validated (text, -1);
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if (uni == (gunichar) (-1) || uni == (gunichar) (-2))
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return FALSE;
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uni = g_unichar_toupper (uni);
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left = g_unichar_to_utf8 (uni, NULL);
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if (left >= *remain)
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return FALSE;
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left = g_unichar_to_utf8 (uni, *out);
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(*out) += left;
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(*remain) -= left;
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return TRUE;
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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str_utf8_tolower (const char *text, char **out, size_t * remain)
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{
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gunichar uni;
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size_t left;
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uni = g_utf8_get_char_validated (text, -1);
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if (uni == (gunichar) (-1) || uni == (gunichar) (-2))
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return FALSE;
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uni = g_unichar_tolower (uni);
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left = g_unichar_to_utf8 (uni, NULL);
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if (left >= *remain)
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return FALSE;
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left = g_unichar_to_utf8 (uni, *out);
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(*out) += left;
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(*remain) -= left;
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return TRUE;
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}
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/* --------------------------------------------------------------------------------------------- */
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static int
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str_utf8_length (const char *text)
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{
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int result = 0;
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const char *start;
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const char *end;
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start = text;
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while (!g_utf8_validate (start, -1, &end) && start[0] != '\0')
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{
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if (start != end)
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result += g_utf8_strlen (start, end - start);
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result++;
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start = end + 1;
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}
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if (start == text)
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result = g_utf8_strlen (text, -1);
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else if (start[0] != '\0' && start != end)
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result += g_utf8_strlen (start, end - start);
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return result;
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}
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/* --------------------------------------------------------------------------------------------- */
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static int
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str_utf8_length2 (const char *text, int size)
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{
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int result = 0;
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const char *start;
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const char *end;
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start = text;
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while (!g_utf8_validate (start, -1, &end) && start[0] != '\0' && size > 0)
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{
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if (start != end)
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{
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result += g_utf8_strlen (start, MIN (end - start, size));
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size -= end - start;
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}
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result += (size > 0);
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size--;
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start = end + 1;
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}
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if (start == text)
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result = g_utf8_strlen (text, size);
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else if (start[0] != '\0' && start != end && size > 0)
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result += g_utf8_strlen (start, MIN (end - start, size));
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return result;
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}
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/* --------------------------------------------------------------------------------------------- */
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static int
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str_utf8_length_noncomb (const char *text)
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{
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int result = 0;
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const char *t = text;
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while (t[0] != '\0')
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{
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str_utf8_cnext_noncomb_char (&t);
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result++;
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}
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return result;
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}
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/* --------------------------------------------------------------------------------------------- */
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#if 0
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static void
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str_utf8_questmark_sustb (char **string, size_t * left, GString * buffer)
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{
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char *next;
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next = g_utf8_next_char (*string);
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(*left) -= next - (*string);
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(*string) = next;
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g_string_append_c (buffer, '?');
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}
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#endif
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/* --------------------------------------------------------------------------------------------- */
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static gchar *
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str_utf8_conv_gerror_message (GError * mcerror, const char *def_msg)
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{
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if (mcerror != NULL)
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return g_strdup (mcerror->message);
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return g_strdup (def_msg != NULL ? def_msg : "");
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}
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/* --------------------------------------------------------------------------------------------- */
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static estr_t
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str_utf8_vfs_convert_to (GIConv coder, const char *string, int size, GString * buffer)
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{
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estr_t result = ESTR_SUCCESS;
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if (coder == str_cnv_not_convert)
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g_string_append_len (buffer, string, size);
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else
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result = str_nconvert (coder, string, size, buffer);
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return result;
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}
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/* --------------------------------------------------------------------------------------------- */
|
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/* utility function, that makes string valid in utf8 and all characters printable
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* return width of string too */
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static const struct term_form *
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str_utf8_make_make_term_form (const char *text, size_t length)
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{
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static struct term_form result;
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gunichar uni;
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size_t left;
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char *actual;
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result.text[0] = '\0';
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result.width = 0;
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result.compose = FALSE;
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actual = result.text;
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|
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/* check if text start with combining character,
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* add space at begin in this case */
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if (length != 0 && text[0] != '\0')
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{
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uni = g_utf8_get_char_validated (text, -1);
|
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if ((uni != (gunichar) (-1)) && (uni != (gunichar) (-2))
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&& str_unichar_iscombiningmark (uni))
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{
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actual[0] = ' ';
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actual++;
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result.width++;
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result.compose = TRUE;
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}
|
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}
|
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|
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while (length != 0 && text[0] != '\0')
|
|
{
|
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uni = g_utf8_get_char_validated (text, -1);
|
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if ((uni != (gunichar) (-1)) && (uni != (gunichar) (-2)))
|
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{
|
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if (g_unichar_isprint (uni))
|
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{
|
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left = g_unichar_to_utf8 (uni, actual);
|
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actual += left;
|
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if (str_unichar_iscombiningmark (uni))
|
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result.compose = TRUE;
|
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else
|
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{
|
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result.width++;
|
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if (g_unichar_iswide (uni))
|
|
result.width++;
|
|
}
|
|
}
|
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else
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{
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actual[0] = '.';
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actual++;
|
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result.width++;
|
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}
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text = g_utf8_next_char (text);
|
|
}
|
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else
|
|
{
|
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text++;
|
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/*actual[0] = '?'; */
|
|
memcpy (actual, replch, strlen (replch));
|
|
actual += strlen (replch);
|
|
result.width++;
|
|
}
|
|
|
|
if (length != (size_t) (-1))
|
|
length--;
|
|
}
|
|
actual[0] = '\0';
|
|
|
|
return &result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static const char *
|
|
str_utf8_term_form (const char *text)
|
|
{
|
|
static char result[BUF_MEDIUM * MB_LEN_MAX];
|
|
const struct term_form *pre_form;
|
|
|
|
pre_form = str_utf8_make_make_term_form (text, (size_t) (-1));
|
|
if (pre_form->compose)
|
|
{
|
|
char *composed;
|
|
|
|
composed = g_utf8_normalize (pre_form->text, -1, G_NORMALIZE_DEFAULT_COMPOSE);
|
|
g_strlcpy (result, composed, sizeof (result));
|
|
g_free (composed);
|
|
}
|
|
else
|
|
g_strlcpy (result, pre_form->text, sizeof (result));
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
/* utility function, that copies all characters from checked to actual */
|
|
|
|
static gboolean
|
|
utf8_tool_copy_chars_to_end (struct utf8_tool *tool)
|
|
{
|
|
tool->compose = FALSE;
|
|
|
|
while (tool->checked[0] != '\0')
|
|
{
|
|
gunichar uni;
|
|
size_t left;
|
|
|
|
uni = g_utf8_get_char (tool->checked);
|
|
tool->compose = tool->compose || str_unichar_iscombiningmark (uni);
|
|
left = g_unichar_to_utf8 (uni, NULL);
|
|
if (tool->remain <= left)
|
|
return FALSE;
|
|
left = g_unichar_to_utf8 (uni, tool->actual);
|
|
tool->actual += left;
|
|
tool->remain -= left;
|
|
tool->checked = g_utf8_next_char (tool->checked);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
/* utility function, that copies characters from checked to actual until ident is
|
|
* smaller than to_ident */
|
|
|
|
static gboolean
|
|
utf8_tool_copy_chars_to (struct utf8_tool *tool, int to_ident)
|
|
{
|
|
tool->compose = FALSE;
|
|
|
|
while (tool->checked[0] != '\0')
|
|
{
|
|
gunichar uni;
|
|
size_t left;
|
|
int w = 0;
|
|
|
|
uni = g_utf8_get_char (tool->checked);
|
|
if (str_unichar_iscombiningmark (uni))
|
|
tool->compose = TRUE;
|
|
else
|
|
{
|
|
w = 1;
|
|
if (g_unichar_iswide (uni))
|
|
w++;
|
|
if (tool->ident + w > to_ident)
|
|
return TRUE;
|
|
}
|
|
|
|
left = g_unichar_to_utf8 (uni, NULL);
|
|
if (tool->remain <= left)
|
|
return FALSE;
|
|
left = g_unichar_to_utf8 (uni, tool->actual);
|
|
tool->actual += left;
|
|
tool->remain -= left;
|
|
tool->checked = g_utf8_next_char (tool->checked);
|
|
tool->ident += w;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
/* utility function, adds count spaces to actual */
|
|
|
|
static int
|
|
utf8_tool_insert_space (struct utf8_tool *tool, int count)
|
|
{
|
|
if (count <= 0)
|
|
return 1;
|
|
if (tool->remain <= (gsize) count)
|
|
return 0;
|
|
|
|
memset (tool->actual, ' ', count);
|
|
tool->actual += count;
|
|
tool->remain -= count;
|
|
return 1;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
/* utility function, adds one characters to actual */
|
|
|
|
static int
|
|
utf8_tool_insert_char (struct utf8_tool *tool, char ch)
|
|
{
|
|
if (tool->remain <= 1)
|
|
return 0;
|
|
|
|
tool->actual[0] = ch;
|
|
tool->actual++;
|
|
tool->remain--;
|
|
return 1;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
/* utility function, thah skips characters from checked until ident is greater or
|
|
* equal to to_ident */
|
|
|
|
static gboolean
|
|
utf8_tool_skip_chars_to (struct utf8_tool *tool, int to_ident)
|
|
{
|
|
gunichar uni;
|
|
|
|
while (to_ident > tool->ident && tool->checked[0] != '\0')
|
|
{
|
|
uni = g_utf8_get_char (tool->checked);
|
|
if (!str_unichar_iscombiningmark (uni))
|
|
{
|
|
tool->ident++;
|
|
if (g_unichar_iswide (uni))
|
|
tool->ident++;
|
|
}
|
|
tool->checked = g_utf8_next_char (tool->checked);
|
|
}
|
|
|
|
uni = g_utf8_get_char (tool->checked);
|
|
while (str_unichar_iscombiningmark (uni))
|
|
{
|
|
tool->checked = g_utf8_next_char (tool->checked);
|
|
uni = g_utf8_get_char (tool->checked);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static void
|
|
utf8_tool_compose (char *buffer, size_t size)
|
|
{
|
|
char *composed;
|
|
|
|
composed = g_utf8_normalize (buffer, -1, G_NORMALIZE_DEFAULT_COMPOSE);
|
|
g_strlcpy (buffer, composed, size);
|
|
g_free (composed);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static const char *
|
|
str_utf8_fit_to_term (const char *text, int width, align_crt_t just_mode)
|
|
{
|
|
static char result[BUF_MEDIUM * MB_LEN_MAX];
|
|
const struct term_form *pre_form;
|
|
struct utf8_tool tool;
|
|
|
|
pre_form = str_utf8_make_make_term_form (text, (size_t) (-1));
|
|
tool.checked = pre_form->text;
|
|
tool.actual = result;
|
|
tool.remain = sizeof (result);
|
|
tool.compose = FALSE;
|
|
|
|
if (pre_form->width <= (gsize) width)
|
|
{
|
|
switch (HIDE_FIT (just_mode))
|
|
{
|
|
case J_CENTER_LEFT:
|
|
case J_CENTER:
|
|
tool.ident = (width - pre_form->width) / 2;
|
|
break;
|
|
case J_RIGHT:
|
|
tool.ident = width - pre_form->width;
|
|
break;
|
|
default:
|
|
tool.ident = 0;
|
|
break;
|
|
}
|
|
|
|
utf8_tool_insert_space (&tool, tool.ident);
|
|
utf8_tool_copy_chars_to_end (&tool);
|
|
utf8_tool_insert_space (&tool, width - pre_form->width - tool.ident);
|
|
}
|
|
else if (IS_FIT (just_mode))
|
|
{
|
|
tool.ident = 0;
|
|
utf8_tool_copy_chars_to (&tool, width / 2);
|
|
utf8_tool_insert_char (&tool, '~');
|
|
|
|
tool.ident = 0;
|
|
utf8_tool_skip_chars_to (&tool, pre_form->width - width + 1);
|
|
utf8_tool_copy_chars_to_end (&tool);
|
|
utf8_tool_insert_space (&tool, width - (pre_form->width - tool.ident + 1));
|
|
}
|
|
else
|
|
{
|
|
switch (HIDE_FIT (just_mode))
|
|
{
|
|
case J_CENTER:
|
|
tool.ident = (width - pre_form->width) / 2;
|
|
break;
|
|
case J_RIGHT:
|
|
tool.ident = width - pre_form->width;
|
|
break;
|
|
default:
|
|
tool.ident = 0;
|
|
break;
|
|
}
|
|
|
|
utf8_tool_skip_chars_to (&tool, 0);
|
|
utf8_tool_insert_space (&tool, tool.ident);
|
|
utf8_tool_copy_chars_to (&tool, width);
|
|
utf8_tool_insert_space (&tool, width - tool.ident);
|
|
}
|
|
|
|
tool.actual[0] = '\0';
|
|
if (tool.compose)
|
|
utf8_tool_compose (result, sizeof (result));
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static const char *
|
|
str_utf8_term_trim (const char *text, int width)
|
|
{
|
|
static char result[BUF_MEDIUM * MB_LEN_MAX];
|
|
const struct term_form *pre_form;
|
|
struct utf8_tool tool;
|
|
|
|
if (width < 1)
|
|
{
|
|
result[0] = '\0';
|
|
return result;
|
|
}
|
|
|
|
pre_form = str_utf8_make_make_term_form (text, (size_t) (-1));
|
|
|
|
tool.checked = pre_form->text;
|
|
tool.actual = result;
|
|
tool.remain = sizeof (result);
|
|
tool.compose = FALSE;
|
|
|
|
if ((gsize) width >= pre_form->width)
|
|
utf8_tool_copy_chars_to_end (&tool);
|
|
else if (width <= 3)
|
|
{
|
|
memset (tool.actual, '.', width);
|
|
tool.actual += width;
|
|
tool.remain -= width;
|
|
}
|
|
else
|
|
{
|
|
memset (tool.actual, '.', 3);
|
|
tool.actual += 3;
|
|
tool.remain -= 3;
|
|
|
|
tool.ident = 0;
|
|
utf8_tool_skip_chars_to (&tool, pre_form->width - width + 3);
|
|
utf8_tool_copy_chars_to_end (&tool);
|
|
}
|
|
|
|
tool.actual[0] = '\0';
|
|
if (tool.compose)
|
|
utf8_tool_compose (result, sizeof (result));
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_term_width2 (const char *text, size_t length)
|
|
{
|
|
const struct term_form *result;
|
|
|
|
result = str_utf8_make_make_term_form (text, length);
|
|
return result->width;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_term_width1 (const char *text)
|
|
{
|
|
return str_utf8_term_width2 (text, (size_t) (-1));
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_term_char_width (const char *text)
|
|
{
|
|
gunichar uni;
|
|
|
|
uni = g_utf8_get_char_validated (text, -1);
|
|
return (str_unichar_iscombiningmark (uni)) ? 0 : ((g_unichar_iswide (uni)) ? 2 : 1);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static const char *
|
|
str_utf8_term_substring (const char *text, int start, int width)
|
|
{
|
|
static char result[BUF_MEDIUM * MB_LEN_MAX];
|
|
const struct term_form *pre_form;
|
|
struct utf8_tool tool;
|
|
|
|
pre_form = str_utf8_make_make_term_form (text, (size_t) (-1));
|
|
|
|
tool.checked = pre_form->text;
|
|
tool.actual = result;
|
|
tool.remain = sizeof (result);
|
|
tool.compose = FALSE;
|
|
|
|
tool.ident = -start;
|
|
utf8_tool_skip_chars_to (&tool, 0);
|
|
if (tool.ident < 0)
|
|
tool.ident = 0;
|
|
utf8_tool_insert_space (&tool, tool.ident);
|
|
|
|
utf8_tool_copy_chars_to (&tool, width);
|
|
utf8_tool_insert_space (&tool, width - tool.ident);
|
|
|
|
tool.actual[0] = '\0';
|
|
if (tool.compose)
|
|
utf8_tool_compose (result, sizeof (result));
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static const char *
|
|
str_utf8_trunc (const char *text, int width)
|
|
{
|
|
static char result[MC_MAXPATHLEN * MB_LEN_MAX * 2];
|
|
const struct term_form *pre_form;
|
|
struct utf8_tool tool;
|
|
|
|
pre_form = str_utf8_make_make_term_form (text, (size_t) (-1));
|
|
|
|
tool.checked = pre_form->text;
|
|
tool.actual = result;
|
|
tool.remain = sizeof (result);
|
|
tool.compose = FALSE;
|
|
|
|
if (pre_form->width <= (gsize) width)
|
|
utf8_tool_copy_chars_to_end (&tool);
|
|
else
|
|
{
|
|
tool.ident = 0;
|
|
utf8_tool_copy_chars_to (&tool, width / 2);
|
|
utf8_tool_insert_char (&tool, '~');
|
|
|
|
tool.ident = 0;
|
|
utf8_tool_skip_chars_to (&tool, pre_form->width - width + 1);
|
|
utf8_tool_copy_chars_to_end (&tool);
|
|
}
|
|
|
|
tool.actual[0] = '\0';
|
|
if (tool.compose)
|
|
utf8_tool_compose (result, sizeof (result));
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_offset_to_pos (const char *text, size_t length)
|
|
{
|
|
if (str_utf8_is_valid_string (text))
|
|
return g_utf8_offset_to_pointer (text, length) - text;
|
|
else
|
|
{
|
|
int result;
|
|
GString *buffer;
|
|
|
|
buffer = g_string_new (text);
|
|
str_utf8_fix_string (buffer->str);
|
|
result = g_utf8_offset_to_pointer (buffer->str, length) - buffer->str;
|
|
g_string_free (buffer, TRUE);
|
|
return result;
|
|
}
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_column_to_pos (const char *text, size_t pos)
|
|
{
|
|
int result = 0;
|
|
int width = 0;
|
|
|
|
while (text[0] != '\0')
|
|
{
|
|
gunichar uni;
|
|
|
|
uni = g_utf8_get_char_validated (text, MB_LEN_MAX);
|
|
if ((uni != (gunichar) (-1)) && (uni != (gunichar) (-2)))
|
|
{
|
|
if (g_unichar_isprint (uni))
|
|
{
|
|
if (!str_unichar_iscombiningmark (uni))
|
|
{
|
|
width++;
|
|
if (g_unichar_iswide (uni))
|
|
width++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
width++;
|
|
}
|
|
text = g_utf8_next_char (text);
|
|
}
|
|
else
|
|
{
|
|
text++;
|
|
width++;
|
|
}
|
|
|
|
if ((gsize) width > pos)
|
|
return result;
|
|
|
|
result++;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static char *
|
|
str_utf8_create_search_needle (const char *needle, gboolean case_sen)
|
|
{
|
|
char *fold, *result;
|
|
|
|
if (needle == NULL)
|
|
return NULL;
|
|
|
|
if (case_sen)
|
|
return g_utf8_normalize (needle, -1, G_NORMALIZE_ALL);
|
|
|
|
fold = g_utf8_casefold (needle, -1);
|
|
result = g_utf8_normalize (fold, -1, G_NORMALIZE_ALL);
|
|
g_free (fold);
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static void
|
|
str_utf8_release_search_needle (char *needle, gboolean case_sen)
|
|
{
|
|
(void) case_sen;
|
|
g_free (needle);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static const char *
|
|
str_utf8_search_first (const char *text, const char *search, gboolean case_sen)
|
|
{
|
|
char *fold_text;
|
|
char *deco_text;
|
|
const char *match;
|
|
const char *result = NULL;
|
|
const char *m;
|
|
|
|
fold_text = case_sen ? (char *) text : g_utf8_casefold (text, -1);
|
|
deco_text = g_utf8_normalize (fold_text, -1, G_NORMALIZE_ALL);
|
|
|
|
match = deco_text;
|
|
do
|
|
{
|
|
match = g_strstr_len (match, -1, search);
|
|
if (match != NULL)
|
|
{
|
|
if ((!str_utf8_iscombiningmark (match) || (match == deco_text)) &&
|
|
!str_utf8_iscombiningmark (match + strlen (search)))
|
|
{
|
|
result = text;
|
|
m = deco_text;
|
|
while (m < match)
|
|
{
|
|
str_utf8_cnext_noncomb_char (&m);
|
|
str_utf8_cnext_noncomb_char (&result);
|
|
}
|
|
}
|
|
else
|
|
str_utf8_cnext_char (&match);
|
|
}
|
|
}
|
|
while (match != NULL && result == NULL);
|
|
|
|
g_free (deco_text);
|
|
if (!case_sen)
|
|
g_free (fold_text);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static const char *
|
|
str_utf8_search_last (const char *text, const char *search, gboolean case_sen)
|
|
{
|
|
char *fold_text;
|
|
char *deco_text;
|
|
char *match;
|
|
const char *result = NULL;
|
|
const char *m;
|
|
|
|
fold_text = case_sen ? (char *) text : g_utf8_casefold (text, -1);
|
|
deco_text = g_utf8_normalize (fold_text, -1, G_NORMALIZE_ALL);
|
|
|
|
do
|
|
{
|
|
match = g_strrstr_len (deco_text, -1, search);
|
|
if (match != NULL)
|
|
{
|
|
if ((!str_utf8_iscombiningmark (match) || (match == deco_text)) &&
|
|
!str_utf8_iscombiningmark (match + strlen (search)))
|
|
{
|
|
result = text;
|
|
m = deco_text;
|
|
while (m < match)
|
|
{
|
|
str_utf8_cnext_noncomb_char (&m);
|
|
str_utf8_cnext_noncomb_char (&result);
|
|
}
|
|
}
|
|
else
|
|
match[0] = '\0';
|
|
}
|
|
}
|
|
while (match != NULL && result == NULL);
|
|
|
|
g_free (deco_text);
|
|
if (!case_sen)
|
|
g_free (fold_text);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static char *
|
|
str_utf8_normalize (const char *text)
|
|
{
|
|
GString *fixed;
|
|
char *tmp;
|
|
char *result;
|
|
const char *start;
|
|
const char *end;
|
|
|
|
/* g_utf8_normalize() is a heavyweight function, that converts UTF-8 into UCS-4,
|
|
* does the normalization and then converts UCS-4 back into UTF-8.
|
|
* Since file names are composed of ASCII characters in most cases, we can speed up
|
|
* utf8 normalization by checking if the heavyweight Unicode normalization is actually
|
|
* needed. Normalization of ASCII string is no-op.
|
|
*/
|
|
|
|
/* find out whether text is ASCII only */
|
|
for (end = text; *end != '\0'; end++)
|
|
if ((*end & 0x80) != 0)
|
|
{
|
|
/* found 2nd byte of utf8-encoded symbol */
|
|
break;
|
|
}
|
|
|
|
/* if text is ASCII-only, return copy, normalize otherwise */
|
|
if (*end == '\0')
|
|
return g_strndup (text, end - text);
|
|
|
|
fixed = g_string_sized_new (4);
|
|
|
|
start = text;
|
|
while (!g_utf8_validate (start, -1, &end) && start[0] != '\0')
|
|
{
|
|
if (start != end)
|
|
{
|
|
tmp = g_utf8_normalize (start, end - start, G_NORMALIZE_ALL);
|
|
g_string_append (fixed, tmp);
|
|
g_free (tmp);
|
|
}
|
|
g_string_append_c (fixed, end[0]);
|
|
start = end + 1;
|
|
}
|
|
|
|
if (start == text)
|
|
{
|
|
result = g_utf8_normalize (text, -1, G_NORMALIZE_ALL);
|
|
g_string_free (fixed, TRUE);
|
|
}
|
|
else
|
|
{
|
|
if (start[0] != '\0' && start != end)
|
|
{
|
|
tmp = g_utf8_normalize (start, end - start, G_NORMALIZE_ALL);
|
|
g_string_append (fixed, tmp);
|
|
g_free (tmp);
|
|
}
|
|
result = g_string_free (fixed, FALSE);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static char *
|
|
str_utf8_casefold_normalize (const char *text)
|
|
{
|
|
GString *fixed;
|
|
char *tmp, *fold;
|
|
char *result;
|
|
const char *start;
|
|
const char *end;
|
|
|
|
fixed = g_string_sized_new (4);
|
|
|
|
start = text;
|
|
while (!g_utf8_validate (start, -1, &end) && start[0] != '\0')
|
|
{
|
|
if (start != end)
|
|
{
|
|
fold = g_utf8_casefold (start, end - start);
|
|
tmp = g_utf8_normalize (fold, -1, G_NORMALIZE_ALL);
|
|
g_string_append (fixed, tmp);
|
|
g_free (tmp);
|
|
g_free (fold);
|
|
}
|
|
g_string_append_c (fixed, end[0]);
|
|
start = end + 1;
|
|
}
|
|
|
|
if (start == text)
|
|
{
|
|
fold = g_utf8_casefold (text, -1);
|
|
result = g_utf8_normalize (fold, -1, G_NORMALIZE_ALL);
|
|
g_free (fold);
|
|
g_string_free (fixed, TRUE);
|
|
}
|
|
else
|
|
{
|
|
if (start[0] != '\0' && start != end)
|
|
{
|
|
fold = g_utf8_casefold (start, end - start);
|
|
tmp = g_utf8_normalize (fold, -1, G_NORMALIZE_ALL);
|
|
g_string_append (fixed, tmp);
|
|
g_free (tmp);
|
|
g_free (fold);
|
|
}
|
|
result = g_string_free (fixed, FALSE);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_compare (const char *t1, const char *t2)
|
|
{
|
|
char *n1, *n2;
|
|
int result;
|
|
|
|
n1 = str_utf8_normalize (t1);
|
|
n2 = str_utf8_normalize (t2);
|
|
|
|
result = strcmp (n1, n2);
|
|
|
|
g_free (n1);
|
|
g_free (n2);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_ncompare (const char *t1, const char *t2)
|
|
{
|
|
char *n1, *n2;
|
|
size_t l1, l2;
|
|
int result;
|
|
|
|
n1 = str_utf8_normalize (t1);
|
|
n2 = str_utf8_normalize (t2);
|
|
|
|
l1 = strlen (n1);
|
|
l2 = strlen (n2);
|
|
result = strncmp (n1, n2, MIN (l1, l2));
|
|
|
|
g_free (n1);
|
|
g_free (n2);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_casecmp (const char *t1, const char *t2)
|
|
{
|
|
char *n1, *n2;
|
|
int result;
|
|
|
|
n1 = str_utf8_casefold_normalize (t1);
|
|
n2 = str_utf8_casefold_normalize (t2);
|
|
|
|
result = strcmp (n1, n2);
|
|
|
|
g_free (n1);
|
|
g_free (n2);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_ncasecmp (const char *t1, const char *t2)
|
|
{
|
|
char *n1, *n2;
|
|
size_t l1, l2;
|
|
int result;
|
|
|
|
n1 = str_utf8_casefold_normalize (t1);
|
|
n2 = str_utf8_casefold_normalize (t2);
|
|
|
|
l1 = strlen (n1);
|
|
l2 = strlen (n2);
|
|
result = strncmp (n1, n2, MIN (l1, l2));
|
|
|
|
g_free (n1);
|
|
g_free (n2);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_prefix (const char *text, const char *prefix)
|
|
{
|
|
char *t, *p;
|
|
const char *nt, *np;
|
|
const char *nnt, *nnp;
|
|
int result;
|
|
|
|
t = str_utf8_normalize (text);
|
|
p = str_utf8_normalize (prefix);
|
|
nt = t;
|
|
np = p;
|
|
nnt = t;
|
|
nnp = p;
|
|
|
|
while (nt[0] != '\0' && np[0] != '\0')
|
|
{
|
|
str_utf8_cnext_char_safe (&nnt);
|
|
str_utf8_cnext_char_safe (&nnp);
|
|
if (nnt - nt != nnp - np)
|
|
break;
|
|
if (strncmp (nt, np, nnt - nt) != 0)
|
|
break;
|
|
nt = nnt;
|
|
np = nnp;
|
|
}
|
|
|
|
result = np - p;
|
|
|
|
g_free (t);
|
|
g_free (p);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_caseprefix (const char *text, const char *prefix)
|
|
{
|
|
char *t, *p;
|
|
const char *nt, *np;
|
|
const char *nnt, *nnp;
|
|
int result;
|
|
|
|
t = str_utf8_casefold_normalize (text);
|
|
p = str_utf8_casefold_normalize (prefix);
|
|
nt = t;
|
|
np = p;
|
|
nnt = t;
|
|
nnp = p;
|
|
|
|
while (nt[0] != '\0' && np[0] != '\0')
|
|
{
|
|
str_utf8_cnext_char_safe (&nnt);
|
|
str_utf8_cnext_char_safe (&nnp);
|
|
if (nnt - nt != nnp - np)
|
|
break;
|
|
if (strncmp (nt, np, nnt - nt) != 0)
|
|
break;
|
|
nt = nnt;
|
|
np = nnp;
|
|
}
|
|
|
|
result = np - p;
|
|
|
|
g_free (t);
|
|
g_free (p);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static char *
|
|
str_utf8_create_key_gen (const char *text, gboolean case_sen,
|
|
gchar * (*keygen) (const gchar * text, gssize size))
|
|
{
|
|
char *result;
|
|
|
|
if (case_sen)
|
|
result = str_utf8_normalize (text);
|
|
else
|
|
{
|
|
gboolean dot;
|
|
GString *fixed;
|
|
const char *start, *end;
|
|
char *fold, *key;
|
|
|
|
dot = text[0] == '.';
|
|
fixed = g_string_sized_new (16);
|
|
|
|
if (!dot)
|
|
start = text;
|
|
else
|
|
{
|
|
start = text + 1;
|
|
g_string_append_c (fixed, '.');
|
|
}
|
|
|
|
while (!g_utf8_validate (start, -1, &end) && start[0] != '\0')
|
|
{
|
|
if (start != end)
|
|
{
|
|
fold = g_utf8_casefold (start, end - start);
|
|
key = keygen (fold, -1);
|
|
g_string_append (fixed, key);
|
|
g_free (key);
|
|
g_free (fold);
|
|
}
|
|
g_string_append_c (fixed, end[0]);
|
|
start = end + 1;
|
|
}
|
|
|
|
if (start == text)
|
|
{
|
|
fold = g_utf8_casefold (start, -1);
|
|
result = keygen (fold, -1);
|
|
g_free (fold);
|
|
g_string_free (fixed, TRUE);
|
|
}
|
|
else if (dot && (start == text + 1))
|
|
{
|
|
fold = g_utf8_casefold (start, -1);
|
|
key = keygen (fold, -1);
|
|
g_string_append (fixed, key);
|
|
g_free (key);
|
|
g_free (fold);
|
|
result = g_string_free (fixed, FALSE);
|
|
}
|
|
else
|
|
{
|
|
if (start[0] != '\0' && start != end)
|
|
{
|
|
fold = g_utf8_casefold (start, end - start);
|
|
key = keygen (fold, -1);
|
|
g_string_append (fixed, key);
|
|
g_free (key);
|
|
g_free (fold);
|
|
}
|
|
result = g_string_free (fixed, FALSE);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static char *
|
|
str_utf8_create_key (const char *text, gboolean case_sen)
|
|
{
|
|
return str_utf8_create_key_gen (text, case_sen, g_utf8_collate_key);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
#ifdef MC__USE_STR_UTF8_CREATE_KEY_FOR_FILENAME
|
|
static char *
|
|
str_utf8_create_key_for_filename (const char *text, gboolean case_sen)
|
|
{
|
|
return str_utf8_create_key_gen (text, case_sen, g_utf8_collate_key_for_filename);
|
|
}
|
|
#endif
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static int
|
|
str_utf8_key_collate (const char *t1, const char *t2, gboolean case_sen)
|
|
{
|
|
(void) case_sen;
|
|
return strcmp (t1, t2);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
static void
|
|
str_utf8_release_key (char *key, gboolean case_sen)
|
|
{
|
|
(void) case_sen;
|
|
g_free (key);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
/*** public functions ****************************************************************************/
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
struct str_class
|
|
str_utf8_init (void)
|
|
{
|
|
struct str_class result;
|
|
|
|
result.conv_gerror_message = str_utf8_conv_gerror_message;
|
|
result.vfs_convert_to = str_utf8_vfs_convert_to;
|
|
result.insert_replace_char = str_utf8_insert_replace_char;
|
|
result.is_valid_string = str_utf8_is_valid_string;
|
|
result.is_valid_char = str_utf8_is_valid_char;
|
|
result.cnext_char = str_utf8_cnext_char;
|
|
result.cprev_char = str_utf8_cprev_char;
|
|
result.cnext_char_safe = str_utf8_cnext_char_safe;
|
|
result.cprev_char_safe = str_utf8_cprev_char_safe;
|
|
result.cnext_noncomb_char = str_utf8_cnext_noncomb_char;
|
|
result.cprev_noncomb_char = str_utf8_cprev_noncomb_char;
|
|
result.char_isspace = str_utf8_isspace;
|
|
result.char_ispunct = str_utf8_ispunct;
|
|
result.char_isalnum = str_utf8_isalnum;
|
|
result.char_isdigit = str_utf8_isdigit;
|
|
result.char_isprint = str_utf8_isprint;
|
|
result.char_iscombiningmark = str_utf8_iscombiningmark;
|
|
result.char_toupper = str_utf8_toupper;
|
|
result.char_tolower = str_utf8_tolower;
|
|
result.length = str_utf8_length;
|
|
result.length2 = str_utf8_length2;
|
|
result.length_noncomb = str_utf8_length_noncomb;
|
|
result.fix_string = str_utf8_fix_string;
|
|
result.term_form = str_utf8_term_form;
|
|
result.fit_to_term = str_utf8_fit_to_term;
|
|
result.term_trim = str_utf8_term_trim;
|
|
result.term_width2 = str_utf8_term_width2;
|
|
result.term_width1 = str_utf8_term_width1;
|
|
result.term_char_width = str_utf8_term_char_width;
|
|
result.term_substring = str_utf8_term_substring;
|
|
result.trunc = str_utf8_trunc;
|
|
result.offset_to_pos = str_utf8_offset_to_pos;
|
|
result.column_to_pos = str_utf8_column_to_pos;
|
|
result.create_search_needle = str_utf8_create_search_needle;
|
|
result.release_search_needle = str_utf8_release_search_needle;
|
|
result.search_first = str_utf8_search_first;
|
|
result.search_last = str_utf8_search_last;
|
|
result.compare = str_utf8_compare;
|
|
result.ncompare = str_utf8_ncompare;
|
|
result.casecmp = str_utf8_casecmp;
|
|
result.ncasecmp = str_utf8_ncasecmp;
|
|
result.prefix = str_utf8_prefix;
|
|
result.caseprefix = str_utf8_caseprefix;
|
|
result.create_key = str_utf8_create_key;
|
|
#ifdef MC__USE_STR_UTF8_CREATE_KEY_FOR_FILENAME
|
|
/* case insensitive sort files in "a1 a2 a10" order */
|
|
result.create_key_for_filename = str_utf8_create_key_for_filename;
|
|
#else
|
|
/* case insensitive sort files in "a1 a10 a2" order */
|
|
result.create_key_for_filename = str_utf8_create_key;
|
|
#endif
|
|
result.key_collate = str_utf8_key_collate;
|
|
result.release_key = str_utf8_release_key;
|
|
|
|
return result;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|