From fa095a4504cbe668e4244547e2c141597bea4ecf Mon Sep 17 00:00:00 2001 From: Andreas Rottmann Date: Mon, 14 Sep 2009 12:32:44 +0200 Subject: Imported Upstream version 0.9.1 --- lib/unicase/u-is-cased.h | 128 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 128 insertions(+) create mode 100644 lib/unicase/u-is-cased.h (limited to 'lib/unicase/u-is-cased.h') diff --git a/lib/unicase/u-is-cased.h b/lib/unicase/u-is-cased.h new file mode 100644 index 00000000..b96a60f0 --- /dev/null +++ b/lib/unicase/u-is-cased.h @@ -0,0 +1,128 @@ +/* Test whether case matters for a Unicode string. + Copyright (C) 2009 Free Software Foundation, Inc. + Written by Bruno Haible , 2009. + + 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 . */ + +int +FUNC (const UNIT *s, size_t n, const char *iso639_language, + bool *resultp) +{ + UNIT normsbuf[2048 / sizeof (UNIT)]; + UNIT *norms; + size_t norms_length; + UNIT mappedbuf[2048 / sizeof (UNIT)]; + UNIT *mapped_toupper; + UNIT *mapped_tolower; + UNIT *mapped_totitle; + size_t mapped_length; + + /* Apply canonical decomposition to S. */ + norms_length = sizeof (normsbuf) / sizeof (UNIT); + norms = U_NORMALIZE (UNINORM_NFD, s, n, normsbuf, &norms_length); + if (norms == NULL) + /* errno is set here. */ + return -1; + + mapped_length = sizeof (mappedbuf) / sizeof (UNIT); + + /* Apply toupper mapping. */ + mapped_toupper = U_TOUPPER (norms, norms_length, iso639_language, NULL, + mappedbuf, &mapped_length); + if (mapped_toupper == NULL) + goto fail; + + /* Compare. */ + if (!(mapped_length == norms_length + && U_CMP (mapped_toupper, norms, norms_length) == 0)) + { + if (mapped_toupper != mappedbuf) + free (mapped_toupper); + goto yes; + } + + /* Apply tolower mapping. */ + mapped_tolower = U_TOLOWER (norms, norms_length, iso639_language, NULL, + mapped_toupper, &mapped_length); + if (mapped_tolower == NULL) + { + if (mapped_toupper != mappedbuf) + { + int saved_errno = errno; + free (mapped_toupper); + errno = saved_errno; + } + goto fail; + } + + if (mapped_toupper != mapped_tolower && mapped_toupper != mappedbuf) + free (mapped_toupper); + + /* Compare. */ + if (!(mapped_length == norms_length + && U_CMP (mapped_tolower, norms, norms_length) == 0)) + { + if (mapped_tolower != mappedbuf) + free (mapped_tolower); + goto yes; + } + + /* Apply totitle mapping. */ + mapped_totitle = U_TOTITLE (norms, norms_length, iso639_language, NULL, + mapped_tolower, &mapped_length); + if (mapped_totitle == NULL) + { + if (mapped_tolower != mappedbuf) + { + int saved_errno = errno; + free (mapped_tolower); + errno = saved_errno; + } + goto fail; + } + + if (mapped_tolower != mapped_totitle && mapped_tolower != mappedbuf) + free (mapped_tolower); + + /* Compare. */ + if (!(mapped_length == norms_length + && U_CMP (mapped_totitle, norms, norms_length) == 0)) + { + if (mapped_totitle != mappedbuf) + free (mapped_totitle); + goto yes; + } + + if (mapped_totitle != mappedbuf) + free (mapped_totitle); + if (norms != normsbuf) + free (norms); + *resultp = false; + return 0; + + yes: + if (norms != normsbuf) + free (norms); + *resultp = true; + return 0; + + fail: + if (norms != normsbuf) + { + int saved_errno = errno; + free (norms); + errno = saved_errno; + } + return -1; +} -- cgit v1.2.3