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authorManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:35:16 +0100
committerManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:35:16 +0100
commit3590c846d4c2febbc05b4ad6b14a06edc549e453 (patch)
treee5d38581c2f36e1cca02efedd2d85044d77f76f9 /lib/unilbrk.in.h
parenta9a31b1de5776a3b08a82101a4fa711294f0dd1d (diff)
Imported Upstream version 0.9.6+really0.9.6upstream/0.9.6+really0.9.6
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+/* Line breaking of Unicode strings.
+ Copyright (C) 2001-2003, 2005-2015 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 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.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser 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 <http://www.gnu.org/licenses/>. */
+
+#ifndef _UNILBRK_H
+#define _UNILBRK_H
+
+/* Get size_t. */
+#include <stddef.h>
+
+#include "unitypes.h"
+
+/* Get locale_charset() declaration. */
+#include <unistring/localcharset.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* These functions are locale dependent. The encoding argument identifies
+ the encoding (e.g. "ISO-8859-2" for Polish). */
+
+
+/* Line breaking. */
+
+enum
+{
+ UC_BREAK_UNDEFINED,
+ UC_BREAK_PROHIBITED,
+ UC_BREAK_POSSIBLE,
+ UC_BREAK_MANDATORY,
+ UC_BREAK_HYPHENATION
+};
+
+/* Determine the line break points in S, and store the result at p[0..n-1].
+ p[i] = UC_BREAK_MANDATORY means that s[i] is a line break character.
+ p[i] = UC_BREAK_POSSIBLE means that a line break may be inserted between
+ s[i-1] and s[i].
+ p[i] = UC_BREAK_HYPHENATION means that a hyphen and a line break may be
+ inserted between s[i-1] and s[i]. But beware of language dependent
+ hyphenation rules.
+ p[i] = UC_BREAK_PROHIBITED means that s[i-1] and s[i] must not be separated.
+ */
+extern void
+ u8_possible_linebreaks (const uint8_t *s, size_t n,
+ const char *encoding, char *p);
+extern void
+ u16_possible_linebreaks (const uint16_t *s, size_t n,
+ const char *encoding, char *p);
+extern void
+ u32_possible_linebreaks (const uint32_t *s, size_t n,
+ const char *encoding, char *p);
+extern void
+ ulc_possible_linebreaks (const char *s, size_t n,
+ const char *encoding, char *p);
+
+/* Choose the best line breaks, assuming the uc_width function.
+ The string is s[0..n-1]. The maximum number of columns per line is given
+ as WIDTH. The starting column of the string is given as START_COLUMN.
+ If the algorithm shall keep room after the last piece, they can be given
+ as AT_END_COLUMNS.
+ o is an optional override; if o[i] != UC_BREAK_UNDEFINED, o[i] takes
+ precedence over p[i] as returned by the *_possible_linebreaks function.
+ The given ENCODING is used for disambiguating widths in uc_width.
+ Return the column after the end of the string, and store the result at
+ p[0..n-1].
+ */
+extern 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);
+extern int
+ u16_width_linebreaks (const uint16_t *s, size_t n, int width,
+ int start_column, int at_end_columns,
+ const char *o, const char *encoding,
+ char *p);
+extern int
+ u32_width_linebreaks (const uint32_t *s, size_t n, int width,
+ int start_column, int at_end_columns,
+ const char *o, const char *encoding,
+ char *p);
+extern int
+ ulc_width_linebreaks (const char *s, size_t n, int width,
+ int start_column, int at_end_columns,
+ const char *o, const char *encoding,
+ char *p);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _UNILBRK_H */