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// -*- C++ -*-
/* Copyright (C) 2002, 2003, 2006
Free Software Foundation, Inc.
Written by Werner Lemberg <wl@gnu.org>
This file is part of groff.
groff is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or
(at your option) any later version.
groff 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
// Convert a groff glyph name to a string containing an underscore-separated
// list of Unicode code points. For example,
//
// `-' -> `2010'
// `,c' -> `00E7'
// `fl' -> `0066_006C'
//
// Return NULL if there is no equivalent.
const char *glyph_name_to_unicode(const char *);
// Convert a string containing an underscore-separated list of Unicode code
// points to a groff glyph name. For example,
//
// `2010' -> `hy'
// `0066_006C' -> `fl'
//
// Return NULL if there is no equivalent.
const char *unicode_to_glyph_name(const char *);
// Convert a string containing a precomposed Unicode character to a string
// containing an underscore-separated list of Unicode code points,
// representing its canonical decomposition. Also perform compatibility
// equivalent replacement. For example,
//
// `1F3A' -> `0399_0313_0300'
// `FA6A' -> `983B'
//
// Return NULL if there is no equivalent.
const char *decompose_unicode(const char *);
// Test whether the given string denotes a Unicode character. It must
// be of the form `uNNNN', obeying the following rules.
//
// - `NNNN' must consist of at least 4 hexadecimal digits in upper case.
// - If there are more than 4 hexadecimal digits, the leading one must not
// be zero,
// - `NNNN' must denote a valid Unicode code point (U+0000..U+10FFFF,
// excluding surrogate code points.
//
// Return a pointer to `NNNN' (skipping the leading `u' character) in case
// of success, NULL otherwise.
const char *check_unicode_name(const char *);
// end of unicode.h
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