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-rw-r--r--src/regex/regerror.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/src/regex/regerror.c b/src/regex/regerror.c
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+++ b/src/regex/regerror.c
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+/*
+ regerror.c - POSIX regerror() implementation for TRE.
+
+ Copyright (c) 2001-2006 Ville Laurikari <vl@iki.fi>.
+
+ This library 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 2.1 of the License, or (at your option) any later version.
+
+ This library 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 library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+*/
+
+#include <string.h>
+#include <regex.h>
+
+/* Error message strings for error codes listed in `regex.h'. This list
+ needs to be in sync with the codes listed there, naturally. */
+
+/* Converted to single string by Rich Felker to remove the need for
+ * data relocations at runtime, 27 Feb 2006. */
+
+static const char tre_error_messages[] = {
+ "No error\0"
+ "No match\0"
+ "Invalid regexp\0"
+ "Unknown collating element\0"
+ "Unknown character class name\0"
+ "Trailing backslash\0"
+ "Invalid back reference\0"
+ "Missing ']'\0"
+ "Missing ')'\0"
+ "Missing '}'\0"
+ "Invalid contents of {}\0"
+ "Invalid character range\0"
+ "Out of memory\0"
+ "XXX\0"
+};
+
+size_t
+regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)
+{
+ const char *err;
+ size_t err_len;
+
+ if (errcode >= 0 && errcode <= REG_BADRPT)
+ for (err=tre_error_messages; errcode; errcode--, err+=strlen(err)+1);
+ else
+ err = "Unknown error";
+
+ err_len = strlen(err) + 1;
+ if (errbuf_size > 0 && errbuf != NULL)
+ {
+ if (err_len > errbuf_size)
+ {
+ memcpy(errbuf, err, errbuf_size - 1);
+ errbuf[errbuf_size - 1] = '\0';
+ }
+ else
+ {
+ strcpy(errbuf, err);
+ }
+ }
+ return err_len;
+}
+
+/* EOF */