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d904cc83f3
Emacs regular expressions forked from everyone else long ago. This makes it official and should allow simplification later. etags.c now uses the glibc regex API, falling back on a Gnulib-supplied substitute lib/regex.c if necessary. Emacs proper now uses its own regular expression module. Although this patch may look dauntingly large, most of it was generated automatically by admin/merge-gnulib and contains an exact copy of the glibc regex source, and the by-hand changes do not grow the Emacs source code. * admin/merge-gnulib (GNULIB_MODULES): Add regex. (AVOIDED_MODULES): Add btowc, langinfo, lock, mbrtowc, mbsinit, nl_langinfo, wchar, wcrtomb, wctype-h. * lib-src/Makefile.in (regex-emacs.o): Remove; Gnulib does it now. (etags_deps, etags_libs): Remove regex-emacs.o. * lib-src/etags.c: Go back to including regex.h. (add_regex): Use unsigned char translation array, since glibc regex requires that. * lib/Makefile.in (not_emacs_OBJECTS, for_emacs_OBJECTS): New macros. (libegnu_a_OBJECTS): Use them, to avoid building e-regex.o. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * lib/regcomp.c, lib/regex.c, lib/regex.h, lib/regex_internal.c: * lib/regex_internal.h, lib/regexec.c, m4/builtin-expect.m4: * m4/eealloc.m4, m4/glibc21.m4, m4/mbstate_t.m4, m4/regex.m4: New files, copied from Gnulib. * src/regex-emacs.h, src/conf_post.h: (RE_TRANSLATE_TYPE, RE_TRANSLATE, RE_TRANSLATE_P): Move from src/conf_post.h to src/regex-emacs.h, so that they don’t interfere with compiling lib/regex.c.
82 lines
3.1 KiB
C
82 lines
3.1 KiB
C
/* Extended regular expression matching and search library.
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Copyright (C) 2002-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _LIBC
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# include <config.h>
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# if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
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# pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
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# endif
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# if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__
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# pragma GCC diagnostic ignored "-Wold-style-definition"
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# pragma GCC diagnostic ignored "-Wtype-limits"
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# endif
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#endif
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/* Make sure no one compiles this code with a C++ compiler. */
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#if defined __cplusplus && defined _LIBC
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# error "This is C code, use a C compiler"
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#endif
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#ifdef _LIBC
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/* We have to keep the namespace clean. */
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# define regfree(preg) __regfree (preg)
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# define regexec(pr, st, nm, pm, ef) __regexec (pr, st, nm, pm, ef)
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# define regcomp(preg, pattern, cflags) __regcomp (preg, pattern, cflags)
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# define regerror(errcode, preg, errbuf, errbuf_size) \
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__regerror(errcode, preg, errbuf, errbuf_size)
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# define re_set_registers(bu, re, nu, st, en) \
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__re_set_registers (bu, re, nu, st, en)
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# define re_match_2(bufp, string1, size1, string2, size2, pos, regs, stop) \
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__re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop)
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# define re_match(bufp, string, size, pos, regs) \
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__re_match (bufp, string, size, pos, regs)
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# define re_search(bufp, string, size, startpos, range, regs) \
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__re_search (bufp, string, size, startpos, range, regs)
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# define re_compile_pattern(pattern, length, bufp) \
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__re_compile_pattern (pattern, length, bufp)
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# define re_set_syntax(syntax) __re_set_syntax (syntax)
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# define re_search_2(bufp, st1, s1, st2, s2, startpos, range, regs, stop) \
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__re_search_2 (bufp, st1, s1, st2, s2, startpos, range, regs, stop)
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# define re_compile_fastmap(bufp) __re_compile_fastmap (bufp)
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# include "../locale/localeinfo.h"
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#endif
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/* On some systems, limits.h sets RE_DUP_MAX to a lower value than
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GNU regex allows. Include it before <regex.h>, which correctly
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#undefs RE_DUP_MAX and sets it to the right value. */
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#include <limits.h>
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#include <regex.h>
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#include "regex_internal.h"
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#include "regex_internal.c"
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#include "regcomp.c"
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#include "regexec.c"
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/* Binary backward compatibility. */
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#if _LIBC
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# include <shlib-compat.h>
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# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3)
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link_warning (re_max_failures, "the 're_max_failures' variable is obsolete and will go away.")
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int re_max_failures = 2000;
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# endif
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#endif
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