bc88266081
There was an issue with Windows mingw build because the function prototypes were not available. Place them into a distinct header file nhregex.h and include it from extern.h, and available for cppregex.cpp to include without the rest of extern.h (which can give some problems with c++).
89 lines
1.9 KiB
C++
89 lines
1.9 KiB
C++
/* NetHack 3.7 cppregex.cpp */
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/* $NHDT-Date: 1596498279 2020/08/03 23:44:39 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.9 $ */
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/* Copyright (c) Sean Hunt 2015. */
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/* NetHack may be freely redistributed. See license for details. */
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#include <regex>
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#include <memory>
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#include <cstring>
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extern "C" {
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#include "config.h"
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#define CPPREGEX_C
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#include "nhregex.h"
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} // extern "C"
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extern "C" { // rest of file
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/* nhregex interface documented in sys/share/posixregex.c */
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extern const char regex_id[] = "cppregex";
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struct nhregex {
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std::unique_ptr<std::regex> re;
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std::unique_ptr<std::regex_error> err;
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};
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struct nhregex *
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regex_init(void)
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{
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return new nhregex;
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}
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boolean
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regex_compile(const char *s, struct nhregex *re)
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{
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if (!re)
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return FALSE;
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try {
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re->re.reset(new std::regex(s, (std::regex::extended
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| std::regex::nosubs
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| std::regex::optimize)));
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re->err.reset(nullptr);
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return TRUE;
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} catch (const std::regex_error& err) {
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re->err.reset(new std::regex_error(err));
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re->re.reset(nullptr);
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return FALSE;
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}
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}
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char *
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regex_error_desc(struct nhregex *re, char *errbuf)
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{
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if (!re) {
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Strcpy(errbuf, "no regexp");
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} else if (!re->err) {
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Strcpy(errbuf, "no explanation");
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} else {
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errbuf[0] = '\0';
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(void) strncat(errbuf, re->err->what(), BUFSZ - 1);
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if (!errbuf[0])
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Strcpy(errbuf, "unspecified regexp error");
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}
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return errbuf;
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}
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boolean
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regex_match(const char *s, struct nhregex *re)
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{
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if (!re->re)
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return false;
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try {
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return regex_search(s, *re->re, std::regex_constants::match_any);
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} catch (const std::regex_error& err) {
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return false;
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}
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}
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void
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regex_free(struct nhregex *re)
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{
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delete re;
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}
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#undef CPPREGEX_C
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} // extern "C"
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/*cppregex.cpp*/
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