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ruby/regerror.c

388 строки
12 KiB
C
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/**********************************************************************
regerror.c - Onigmo (Oniguruma-mod) (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2007 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
* Copyright (c) 2011-2016 K.Takata <kentkt AT csc DOT jp>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "regint.h"
#include <stdio.h> /* for vsnprintf() */
#include <stdarg.h>
extern UChar*
onig_error_code_to_format(OnigPosition code)
{
const char *p;
if (code >= 0) return (UChar* )0;
switch (code) {
case ONIG_MISMATCH:
p = "mismatch"; break;
case ONIG_NO_SUPPORT_CONFIG:
p = "no support in this configuration"; break;
case ONIGERR_MEMORY:
p = "failed to allocate memory"; break;
case ONIGERR_TYPE_BUG:
p = "undefined type (bug)"; break;
case ONIGERR_PARSER_BUG:
p = "internal parser error (bug)"; break;
case ONIGERR_STACK_BUG:
p = "stack error (bug)"; break;
case ONIGERR_UNDEFINED_BYTECODE:
p = "undefined bytecode (bug)"; break;
case ONIGERR_UNEXPECTED_BYTECODE:
p = "unexpected bytecode (bug)"; break;
case ONIGERR_MATCH_STACK_LIMIT_OVER:
p = "match-stack limit over"; break;
case ONIGERR_PARSE_DEPTH_LIMIT_OVER:
p = "parse depth limit over"; break;
case ONIGERR_DEFAULT_ENCODING_IS_NOT_SET:
p = "default multibyte-encoding is not set"; break;
case ONIGERR_SPECIFIED_ENCODING_CANT_CONVERT_TO_WIDE_CHAR:
p = "can't convert to wide-char on specified multibyte-encoding"; break;
case ONIGERR_INVALID_ARGUMENT:
p = "invalid argument"; break;
case ONIGERR_END_PATTERN_AT_LEFT_BRACE:
p = "end pattern at left brace"; break;
case ONIGERR_END_PATTERN_AT_LEFT_BRACKET:
p = "end pattern at left bracket"; break;
case ONIGERR_EMPTY_CHAR_CLASS:
p = "empty char-class"; break;
case ONIGERR_PREMATURE_END_OF_CHAR_CLASS:
p = "premature end of char-class"; break;
case ONIGERR_END_PATTERN_AT_ESCAPE:
p = "end pattern at escape"; break;
case ONIGERR_END_PATTERN_AT_META:
p = "end pattern at meta"; break;
case ONIGERR_END_PATTERN_AT_CONTROL:
p = "end pattern at control"; break;
case ONIGERR_META_CODE_SYNTAX:
p = "invalid meta-code syntax"; break;
case ONIGERR_CONTROL_CODE_SYNTAX:
p = "invalid control-code syntax"; break;
case ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE:
p = "char-class value at end of range"; break;
case ONIGERR_CHAR_CLASS_VALUE_AT_START_OF_RANGE:
p = "char-class value at start of range"; break;
case ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS:
p = "unmatched range specifier in char-class"; break;
case ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED:
p = "target of repeat operator is not specified"; break;
case ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID:
p = "target of repeat operator is invalid"; break;
case ONIGERR_NESTED_REPEAT_OPERATOR:
p = "nested repeat operator"; break;
case ONIGERR_UNMATCHED_CLOSE_PARENTHESIS:
p = "unmatched close parenthesis"; break;
case ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS:
p = "end pattern with unmatched parenthesis"; break;
case ONIGERR_END_PATTERN_IN_GROUP:
p = "end pattern in group"; break;
case ONIGERR_UNDEFINED_GROUP_OPTION:
p = "undefined group option"; break;
case ONIGERR_INVALID_POSIX_BRACKET_TYPE:
p = "invalid POSIX bracket type"; break;
case ONIGERR_INVALID_LOOK_BEHIND_PATTERN:
p = "invalid pattern in look-behind"; break;
case ONIGERR_INVALID_REPEAT_RANGE_PATTERN:
p = "invalid repeat range {lower,upper}"; break;
case ONIGERR_INVALID_CONDITION_PATTERN:
p = "invalid conditional pattern"; break;
case ONIGERR_TOO_BIG_NUMBER:
p = "too big number"; break;
case ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE:
p = "too big number for repeat range"; break;
case ONIGERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE:
p = "upper is smaller than lower in repeat range"; break;
case ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS:
p = "empty range in char class"; break;
case ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE:
p = "mismatch multibyte code length in char-class range"; break;
case ONIGERR_TOO_MANY_MULTI_BYTE_RANGES:
p = "too many multibyte code ranges are specified"; break;
case ONIGERR_TOO_SHORT_MULTI_BYTE_STRING:
p = "too short multibyte code string"; break;
case ONIGERR_TOO_BIG_BACKREF_NUMBER:
p = "too big backref number"; break;
case ONIGERR_INVALID_BACKREF:
#ifdef USE_NAMED_GROUP
p = "invalid backref number/name"; break;
#else
p = "invalid backref number"; break;
#endif
case ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED:
p = "numbered backref/call is not allowed. (use name)"; break;
case ONIGERR_TOO_SHORT_DIGITS:
p = "too short digits"; break;
case ONIGERR_TOO_LONG_WIDE_CHAR_VALUE:
p = "too long wide-char value"; break;
case ONIGERR_EMPTY_GROUP_NAME:
p = "group name is empty"; break;
case ONIGERR_INVALID_GROUP_NAME:
p = "invalid group name <%n>"; break;
case ONIGERR_INVALID_CHAR_IN_GROUP_NAME:
#ifdef USE_NAMED_GROUP
p = "invalid char in group name <%n>"; break;
#else
p = "invalid char in group number <%n>"; break;
#endif
case ONIGERR_UNDEFINED_NAME_REFERENCE:
p = "undefined name <%n> reference"; break;
case ONIGERR_UNDEFINED_GROUP_REFERENCE:
p = "undefined group <%n> reference"; break;
case ONIGERR_MULTIPLEX_DEFINED_NAME:
p = "multiplex defined name <%n>"; break;
case ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL:
p = "multiplex definition name <%n> call"; break;
case ONIGERR_NEVER_ENDING_RECURSION:
p = "never ending recursion"; break;
case ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY:
p = "group number is too big for capture history"; break;
case ONIGERR_INVALID_CHAR_PROPERTY_NAME:
p = "invalid character property name {%n}"; break;
case ONIGERR_TOO_MANY_CAPTURE_GROUPS:
p = "too many capture groups are specified"; break;
case ONIGERR_INVALID_CODE_POINT_VALUE:
p = "invalid code point value"; break;
case ONIGERR_TOO_BIG_WIDE_CHAR_VALUE:
p = "too big wide-char value"; break;
case ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION:
p = "not supported encoding combination"; break;
case ONIGERR_INVALID_COMBINATION_OF_OPTIONS:
p = "invalid combination of options"; break;
default:
p = "undefined error code"; break;
}
return (UChar* )p;
}
static void sprint_byte(char* s, unsigned int v)
{
xsnprintf(s, 3, "%02x", (v & 0377));
}
static void sprint_byte_with_x(char* s, unsigned int v)
{
xsnprintf(s, 5, "\\x%02x", (v & 0377));
}
static int to_ascii(OnigEncoding enc, UChar *s, UChar *end,
UChar buf[], int buf_size, int *is_over)
{
int len;
UChar *p;
OnigCodePoint code;
if (ONIGENC_MBC_MINLEN(enc) > 1) {
p = s;
len = 0;
while (p < end) {
code = ONIGENC_MBC_TO_CODE(enc, p, end);
if (code >= 0x80) {
if (code > 0xffff && len + 10 <= buf_size) {
sprint_byte_with_x((char*)(&(buf[len])), (unsigned int)(code >> 24));
sprint_byte((char*)(&(buf[len+4])), (unsigned int)(code >> 16));
sprint_byte((char*)(&(buf[len+6])), (unsigned int)(code >> 8));
sprint_byte((char*)(&(buf[len+8])), (unsigned int)code);
len += 10;
}
else if (len + 6 <= buf_size) {
sprint_byte_with_x((char*)(&(buf[len])), (unsigned int)(code >> 8));
sprint_byte((char*)(&(buf[len+4])), (unsigned int)code);
len += 6;
}
else {
break;
}
}
else {
buf[len++] = (UChar )code;
}
p += enclen(enc, p, end);
if (len >= buf_size) break;
}
*is_over = ((p < end) ? 1 : 0);
}
else {
len = (int )MIN((end - s), buf_size);
xmemcpy(buf, s, (size_t )len);
*is_over = ((buf_size < (end - s)) ? 1 : 0);
}
return len;
}
/* < ONIG_MAX_ERROR_MESSAGE_LEN - max length of messages with %n */
#define MAX_ERROR_PAR_LEN 50
extern int
onig_error_code_to_str(UChar* s, OnigPosition code, ...)
{
UChar *p, *q;
OnigErrorInfo* einfo;
size_t len;
int is_over;
UChar parbuf[MAX_ERROR_PAR_LEN];
va_list vargs;
va_start(vargs, code);
switch (code) {
case ONIGERR_UNDEFINED_NAME_REFERENCE:
case ONIGERR_UNDEFINED_GROUP_REFERENCE:
case ONIGERR_MULTIPLEX_DEFINED_NAME:
case ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL:
case ONIGERR_INVALID_GROUP_NAME:
case ONIGERR_INVALID_CHAR_IN_GROUP_NAME:
case ONIGERR_INVALID_CHAR_PROPERTY_NAME:
einfo = va_arg(vargs, OnigErrorInfo*);
len = to_ascii(einfo->enc, einfo->par, einfo->par_end,
parbuf, MAX_ERROR_PAR_LEN - 3, &is_over);
q = onig_error_code_to_format(code);
p = s;
while (*q != '\0') {
if (*q == '%') {
q++;
if (*q == 'n') { /* '%n': name */
xmemcpy(p, parbuf, len);
p += len;
if (is_over != 0) {
xmemcpy(p, "...", 3);
p += 3;
}
q++;
}
else
goto normal_char;
}
else {
normal_char:
*p++ = *q++;
}
}
*p = '\0';
len = p - s;
break;
default:
q = onig_error_code_to_format(code);
if (q) {
len = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, q);
xmemcpy(s, q, len);
} else {
len = 0;
}
s[len] = '\0';
break;
}
va_end(vargs);
return (int )len;
}
void
onig_vsnprintf_with_pattern(UChar buf[], int bufsize, OnigEncoding enc,
UChar* pat, UChar* pat_end, const char *fmt, va_list args)
{
size_t need;
int n, len;
UChar *p, *s, *bp;
UChar bs[6];
n = xvsnprintf((char* )buf, bufsize, (const char* )fmt, args);
need = (pat_end - pat) * 4 + 4;
if (n + need < (size_t )bufsize) {
static const char sep[] = ": /";
memcpy((char* )buf + n, sep, sizeof(sep));
s = buf + onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, buf);
p = pat;
while (p < pat_end) {
if (ONIGENC_IS_MBC_HEAD(enc, p, pat_end)) {
len = enclen(enc, p, pat_end);
if (ONIGENC_MBC_MINLEN(enc) == 1) {
while (len-- > 0) *s++ = *p++;
}
else { /* for UTF16/32 */
int blen;
while (len-- > 0) {
sprint_byte_with_x((char* )bs, (unsigned int )(*p++));
blen = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs);
bp = bs;
while (blen-- > 0) *s++ = *bp++;
}
}
}
else if (*p == '\\') {
*s++ = *p++;
len = enclen(enc, p, pat_end);
while (len-- > 0) *s++ = *p++;
}
else if (*p == '/') {
*s++ = (unsigned char )'\\';
*s++ = *p++;
}
else if (!ONIGENC_IS_CODE_PRINT(enc, *p) &&
(!ONIGENC_IS_CODE_SPACE(enc, *p) ||
ONIGENC_IS_CODE_CNTRL(enc, *p))) {
sprint_byte_with_x((char* )bs, (unsigned int )(*p++));
len = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs);
bp = bs;
while (len-- > 0) *s++ = *bp++;
}
else {
*s++ = *p++;
}
}
*s++ = '/';
*s = '\0';
}
}
#if 0 /* unused */
void
onig_snprintf_with_pattern(UChar buf[], int bufsize, OnigEncoding enc,
UChar* pat, UChar* pat_end, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
onig_vsnprintf_with_pattern(buf, bufsize, enc,
pat, pat_end, fmt, args);
va_end(args);
}
#endif
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