140 lines
4.8 KiB
C
140 lines
4.8 KiB
C
$NetBSD: patch-source_Utility_regerror.c,v 1.1 2016/03/28 13:13:55 kamil Exp $
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--- source/Utility/regerror.c.orig 2016-01-23 13:45:52.000000000 +0000
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+++ source/Utility/regerror.c
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@@ -0,0 +1,135 @@
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+/*-
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+ * This code is derived from OpenBSD's libc/regex, original license follows:
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+ *
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+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
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+ * Copyright (c) 1992, 1993, 1994
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+ * The Regents of the University of California. All rights reserved.
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+ *
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+ * This code is derived from software contributed to Berkeley by
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+ * Henry Spencer.
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+ *
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+ * Redistribution and use in source and binary forms, with or without
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+ * modification, are permitted provided that the following conditions
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+ * are met:
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+ * 1. Redistributions of source code must retain the above copyright
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+ * notice, this list of conditions and the following disclaimer.
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+ * 2. Redistributions in binary form must reproduce the above copyright
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+ * notice, this list of conditions and the following disclaimer in the
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+ * documentation and/or other materials provided with the distribution.
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+ * 3. Neither the name of the University nor the names of its contributors
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+ * may be used to endorse or promote products derived from this software
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+ * without specific prior written permission.
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+ *
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+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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+ * SUCH DAMAGE.
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+ *
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+ * @(#)regerror.c 8.4 (Berkeley) 3/20/94
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+ */
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+
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+#include <sys/types.h>
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+#include <stdio.h>
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+#include <string.h>
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+#include <ctype.h>
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+#include <limits.h>
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+#include <stdlib.h>
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+#include "lldb/Utility/regex_impl.h"
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+
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+#include "lldb/Utility/regutils.h"
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+
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+#ifdef _MSC_VER
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+#define snprintf _snprintf
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+#endif
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+
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+static const char *regatoi(const llvm_regex_t *, char *, int);
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+
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+static struct rerr {
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+ int code;
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+ const char *name;
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+ const char *explain;
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+} rerrs[] = {
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+ { REG_NOMATCH, "REG_NOMATCH", "llvm_regexec() failed to match" },
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+ { REG_BADPAT, "REG_BADPAT", "invalid regular expression" },
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+ { REG_ECOLLATE, "REG_ECOLLATE", "invalid collating element" },
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+ { REG_ECTYPE, "REG_ECTYPE", "invalid character class" },
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+ { REG_EESCAPE, "REG_EESCAPE", "trailing backslash (\\)" },
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+ { REG_ESUBREG, "REG_ESUBREG", "invalid backreference number" },
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+ { REG_EBRACK, "REG_EBRACK", "brackets ([ ]) not balanced" },
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+ { REG_EPAREN, "REG_EPAREN", "parentheses not balanced" },
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+ { REG_EBRACE, "REG_EBRACE", "braces not balanced" },
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+ { REG_BADBR, "REG_BADBR", "invalid repetition count(s)" },
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+ { REG_ERANGE, "REG_ERANGE", "invalid character range" },
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+ { REG_ESPACE, "REG_ESPACE", "out of memory" },
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+ { REG_BADRPT, "REG_BADRPT", "repetition-operator operand invalid" },
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+ { REG_EMPTY, "REG_EMPTY", "empty (sub)expression" },
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+ { REG_ASSERT, "REG_ASSERT", "\"can't happen\" -- you found a bug" },
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+ { REG_INVARG, "REG_INVARG", "invalid argument to regex routine" },
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+ { 0, "", "*** unknown regexp error code ***" }
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+};
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+
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+/*
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+ - llvm_regerror - the interface to error numbers
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+ = extern size_t llvm_regerror(int, const llvm_regex_t *, char *, size_t);
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+ */
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+/* ARGSUSED */
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+size_t
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+llvm_regerror(int errcode, const llvm_regex_t *preg, char *errbuf, size_t errbuf_size)
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+{
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+ struct rerr *r;
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+ size_t len;
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+ int target = errcode &~ REG_ITOA;
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+ const char *s;
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+ char convbuf[50];
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+
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+ if (errcode == REG_ATOI)
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+ s = regatoi(preg, convbuf, sizeof convbuf);
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+ else {
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+ for (r = rerrs; r->code != 0; r++)
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+ if (r->code == target)
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+ break;
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+
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+ if (errcode®_ITOA) {
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+ if (r->code != 0) {
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+ assert(strlen(r->name) < sizeof(convbuf));
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+ (void) llvm_strlcpy(convbuf, r->name, sizeof convbuf);
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+ } else
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+ (void)snprintf(convbuf, sizeof convbuf,
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+ "REG_0x%x", target);
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+ s = convbuf;
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+ } else
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+ s = r->explain;
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+ }
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+
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+ len = strlen(s) + 1;
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+ if (errbuf_size > 0) {
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+ llvm_strlcpy(errbuf, s, errbuf_size);
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+ }
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+
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+ return(len);
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+}
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+
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+/*
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+ - regatoi - internal routine to implement REG_ATOI
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+ */
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+static const char *
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+regatoi(const llvm_regex_t *preg, char *localbuf, int localbufsize)
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+{
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+ struct rerr *r;
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+
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+ for (r = rerrs; r->code != 0; r++)
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+ if (strcmp(r->name, preg->re_endp) == 0)
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+ break;
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+ if (r->code == 0)
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+ return("0");
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+
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+ (void)snprintf(localbuf, localbufsize, "%d", r->code);
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+ return(localbuf);
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+}
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