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encoding.h
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/*[
* Copyright 2018 Thomas Williams, Colin Kelley
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
]*/
#ifndef GNUPLOT_ENCODING_H
#define GNUPLOT_ENCODING_H
#include "term_api.h"
void init_encoding(void);
enum set_encoding_id encoding_from_locale(void);
void init_special_chars(void);
const char * iconv_encoding_name(enum set_encoding_id encoding);
const char * latex_input_encoding(enum set_encoding_id encoding);
TBOOLEAN contains8bit(const char *s);
TBOOLEAN utf8toulong(unsigned long * wch, const char ** str);
int ucs4toutf8(uint32_t codepoint, unsigned char *utf8char);
size_t strlen_utf8(const char *s);
void truncate_to_one_utf8_char(char *orig);
TBOOLEAN is_sjis_lead_byte(char c);
size_t strlen_sjis(const char *s);
#define advance_one_utf8_char(utf8str) \
do { \
if ((*utf8str & 0x80) == 0x00) \
utf8str += 1; \
else if ((*utf8str & 0xe0) == 0xc0) \
utf8str += 2; \
else if ((*utf8str & 0xf0) == 0xe0) \
utf8str += 3; \
else if ((*utf8str & 0xf8) == 0xf0) \
utf8str += 4; \
else /* invalid utf8 sequence */ \
utf8str += 1; \
} while (0)
#endif