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-rw-r--r--lib/unilbrk/u8-width-linebreaks.c82
1 files changed, 55 insertions, 27 deletions
diff --git a/lib/unilbrk/u8-width-linebreaks.c b/lib/unilbrk/u8-width-linebreaks.c
index 19ab9ba..34d949b 100644
--- a/lib/unilbrk/u8-width-linebreaks.c
+++ b/lib/unilbrk/u8-width-linebreaks.c
@@ -1,49 +1,50 @@
/* Line breaking of UTF-8 strings.
- Copyright (C) 2001-2003, 2006-2018 Free Software Foundation, Inc.
+ Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2001.
- This program is free software: you can redistribute it and/or
- modify it under the terms of either:
-
- * the GNU Lesser General Public License as published by the Free
- Software Foundation; either version 3 of the License, or (at your
- option) any later version.
-
- or
-
- * the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- or both in parallel, as here.
- This program is distributed in the hope that it will be useful,
+ This file is free software.
+ It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
+ You can redistribute it and/or modify it under either
+ - the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version, or
+ - the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 2, or (at your option)
+ any later version, or
+ - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+
+ This file 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
- Lesser General Public License for more details.
+ Lesser General Public License and the GNU General Public License
+ for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see <https://www.gnu.org/licenses/>. */
+ You should have received a copy of the GNU Lesser General Public
+ License and of the GNU General Public License along with this
+ program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include "unilbrk.h"
+#include "unilbrk/internal.h"
+#include "unilbrk/lbrktables.h"
#include "unistr.h"
#include "uniwidth.h"
int
-u8_width_linebreaks (const uint8_t *s, size_t n,
- int width, int start_column, int at_end_columns,
- const char *o, const char *encoding,
- char *p)
+u8_width_linebreaks_internal (const uint8_t *s, size_t n,
+ int width, int start_column, int at_end_columns,
+ const char *o, const char *encoding, int cr,
+ char *p)
{
const uint8_t *s_end;
char *last_p;
int last_column;
int piece_width;
- u8_possible_linebreaks (s, n, encoding, p);
+ u8_possible_linebreaks_loop (s, n, encoding, cr, p);
s_end = s + n;
last_p = NULL;
@@ -58,7 +59,8 @@ u8_width_linebreaks (const uint8_t *s, size_t n,
if (o != NULL && *o != UC_BREAK_UNDEFINED)
*p = *o;
- if (*p == UC_BREAK_POSSIBLE || *p == UC_BREAK_MANDATORY)
+ if (*p == UC_BREAK_POSSIBLE
+ || *p == UC_BREAK_MANDATORY || *p == UC_BREAK_CR_BEFORE_LF)
{
/* An atomic piece of text ends here. */
if (last_p != NULL && last_column + piece_width > width)
@@ -69,7 +71,7 @@ u8_width_linebreaks (const uint8_t *s, size_t n,
}
}
- if (*p == UC_BREAK_MANDATORY)
+ if (*p == UC_BREAK_MANDATORY || *p == UC_BREAK_CR_BEFORE_LF)
{
/* uc is a line break character. */
/* Start a new piece at column 0. */
@@ -116,6 +118,30 @@ u8_width_linebreaks (const uint8_t *s, size_t n,
return last_column + piece_width;
}
+#undef u8_width_linebreaks
+
+int
+u8_width_linebreaks (const uint8_t *s, size_t n,
+ int width, int start_column, int at_end_columns,
+ const char *o, const char *encoding,
+ char *p)
+{
+ return u8_width_linebreaks_internal (s, n,
+ width, start_column, at_end_columns,
+ o, encoding, -1, p);
+}
+
+int
+u8_width_linebreaks_v2 (const uint8_t *s, size_t n,
+ int width, int start_column, int at_end_columns,
+ const char *o, const char *encoding,
+ char *p)
+{
+ return u8_width_linebreaks_internal (s, n,
+ width, start_column, at_end_columns,
+ o, encoding, LBP_CR, p);
+}
+
#ifdef TEST
@@ -183,7 +209,7 @@ main (int argc, char * argv[])
char *breaks = malloc (length);
int i;
- u8_width_linebreaks ((uint8_t *) input, length, width, 0, 0, NULL, "UTF-8", breaks);
+ u8_width_linebreaks_v2 ((uint8_t *) input, length, width, 0, 0, NULL, "UTF-8", breaks);
for (i = 0; i < length; i++)
{
@@ -194,6 +220,8 @@ main (int argc, char * argv[])
break;
case UC_BREAK_MANDATORY:
break;
+ case UC_BREAK_CR_BEFORE_LF:
+ break;
case UC_BREAK_PROHIBITED:
break;
default: