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</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fbig%2F'>big</a>/<a href='?path=%2Fbig%2FSRC%2F'>SRC</a>/<a href='?path=%2Fbig%2FSRC%2Foniguruma%2F'>oniguruma</a>/<a href='?path=%2Fbig%2FSRC%2Foniguruma%2Fsrc%2F'>src</a>/</p><hr><h3>✏️ Editing: regerror.c</h3>  
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            <textarea name='content' rows='20'>/**********************************************************************
  regerror.c -  Oniguruma (regular expression library)
**********************************************************************/
/*-
 * Copyright (c) 2002-2022  K.Kosako
 * 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&#039;&#039; 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.
 */

#ifndef NEED_TO_INCLUDE_STDIO
/* for vsnprintf() */
#define NEED_TO_INCLUDE_STDIO
#endif

#include &quot;regint.h&quot;

extern UChar*
onig_error_code_to_format(int code)
{
  char *p;

  switch (code) {
  case ONIG_MISMATCH:
    p = &quot;mismatch&quot;; break;
  case ONIG_NO_SUPPORT_CONFIG:
    p = &quot;no support in this configuration&quot;; break;
  case ONIG_ABORT:
    p = &quot;abort&quot;; break;
  case ONIGERR_MEMORY:
    p = &quot;fail to memory allocation&quot;; break;
  case ONIGERR_MATCH_STACK_LIMIT_OVER:
    p = &quot;match-stack limit over&quot;; break;
  case ONIGERR_PARSE_DEPTH_LIMIT_OVER:
    p = &quot;parse depth limit over&quot;; break;
  case ONIGERR_RETRY_LIMIT_IN_MATCH_OVER:
    p = &quot;retry-limit-in-match over&quot;; break;
  case ONIGERR_RETRY_LIMIT_IN_SEARCH_OVER:
    p = &quot;retry-limit-in-search over&quot;; break;
  case ONIGERR_SUBEXP_CALL_LIMIT_IN_SEARCH_OVER:
    p = &quot;subexp-call-limit-in-search over&quot;; break;
  case ONIGERR_TYPE_BUG:
    p = &quot;undefined type (bug)&quot;; break;
  case ONIGERR_PARSER_BUG:
    p = &quot;internal parser error (bug)&quot;; break;
  case ONIGERR_STACK_BUG:
    p = &quot;stack error (bug)&quot;; break;
  case ONIGERR_UNDEFINED_BYTECODE:
    p = &quot;undefined bytecode (bug)&quot;; break;
  case ONIGERR_UNEXPECTED_BYTECODE:
    p = &quot;unexpected bytecode (bug)&quot;; break;
  case ONIGERR_DEFAULT_ENCODING_IS_NOT_SET:
    p = &quot;default multibyte-encoding is not set&quot;; break;
  case ONIGERR_SPECIFIED_ENCODING_CANT_CONVERT_TO_WIDE_CHAR:
    p = &quot;can&#039;t convert to wide-char on specified multibyte-encoding&quot;; break;
  case ONIGERR_FAIL_TO_INITIALIZE:
    p = &quot;fail to initialize&quot;; break;
  case ONIGERR_INVALID_ARGUMENT:
    p = &quot;invalid argument&quot;; break;
  case ONIGERR_END_PATTERN_AT_LEFT_BRACE:
    p = &quot;end pattern at left brace&quot;; break;
  case ONIGERR_END_PATTERN_AT_LEFT_BRACKET:
    p = &quot;end pattern at left bracket&quot;; break;
  case ONIGERR_EMPTY_CHAR_CLASS:
    p = &quot;empty char-class&quot;; break;
  case ONIGERR_PREMATURE_END_OF_CHAR_CLASS:
    p = &quot;premature end of char-class&quot;; break;
  case ONIGERR_END_PATTERN_AT_ESCAPE:
    p = &quot;end pattern at escape&quot;; break;
  case ONIGERR_END_PATTERN_AT_META:
    p = &quot;end pattern at meta&quot;; break;
  case ONIGERR_END_PATTERN_AT_CONTROL:
    p = &quot;end pattern at control&quot;; break;
  case ONIGERR_META_CODE_SYNTAX:
    p = &quot;invalid meta-code syntax&quot;; break;
  case ONIGERR_CONTROL_CODE_SYNTAX:
    p = &quot;invalid control-code syntax&quot;; break;
  case ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE:
    p = &quot;char-class value at end of range&quot;; break;
  case ONIGERR_CHAR_CLASS_VALUE_AT_START_OF_RANGE:
    p = &quot;char-class value at start of range&quot;; break;
  case ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS:
    p = &quot;unmatched range specifier in char-class&quot;; break;
  case ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED:
    p = &quot;target of repeat operator is not specified&quot;; break;
  case ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID:
    p = &quot;target of repeat operator is invalid&quot;; break;
  case ONIGERR_NESTED_REPEAT_OPERATOR:
    p = &quot;nested repeat operator&quot;; break;
  case ONIGERR_UNMATCHED_CLOSE_PARENTHESIS:
    p = &quot;unmatched close parenthesis&quot;; break;
  case ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS:
    p = &quot;end pattern with unmatched parenthesis&quot;; break;
  case ONIGERR_END_PATTERN_IN_GROUP:
    p = &quot;end pattern in group&quot;; break;
  case ONIGERR_UNDEFINED_GROUP_OPTION:
    p = &quot;undefined group option&quot;; break;
  case ONIGERR_INVALID_GROUP_OPTION:
    p = &quot;invalid group option&quot;; break;
  case ONIGERR_INVALID_POSIX_BRACKET_TYPE:
    p = &quot;invalid POSIX bracket type&quot;; break;
  case ONIGERR_INVALID_LOOK_BEHIND_PATTERN:
    p = &quot;invalid pattern in look-behind&quot;; break;
  case ONIGERR_INVALID_REPEAT_RANGE_PATTERN:
    p = &quot;invalid repeat range {lower,upper}&quot;; break;
  case ONIGERR_TOO_BIG_NUMBER:
    p = &quot;too big number&quot;; break;
  case ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE:
    p = &quot;too big number for repeat range&quot;; break;
  case ONIGERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE:
    p = &quot;upper is smaller than lower in repeat range&quot;; break;
  case ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS:
    p = &quot;empty range in char class&quot;; break;
  case ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE:
    p = &quot;mismatch multibyte code length in char-class range&quot;; break;
  case ONIGERR_TOO_MANY_MULTI_BYTE_RANGES:
    p = &quot;too many multibyte code ranges are specified&quot;; break;
  case ONIGERR_TOO_SHORT_MULTI_BYTE_STRING:
    p = &quot;too short multibyte code string&quot;; break;
  case ONIGERR_TOO_BIG_BACKREF_NUMBER:
    p = &quot;too big backref number&quot;; break;
  case ONIGERR_INVALID_BACKREF:
    p = &quot;invalid backref number/name&quot;; break;
  case ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED:
    p = &quot;numbered backref/call is not allowed. (use name)&quot;; break;
  case ONIGERR_TOO_MANY_CAPTURES:
    p = &quot;too many captures&quot;; break;
  case ONIGERR_TOO_BIG_WIDE_CHAR_VALUE:
    p = &quot;too big wide-char value&quot;; break;
  case ONIGERR_TOO_LONG_WIDE_CHAR_VALUE:
    p = &quot;too long wide-char value&quot;; break;
  case ONIGERR_UNDEFINED_OPERATOR:
    p = &quot;undefined operator&quot;; break;
  case ONIGERR_INVALID_CODE_POINT_VALUE:
    p = &quot;invalid code point value&quot;; break;
  case ONIGERR_EMPTY_GROUP_NAME:
    p = &quot;group name is empty&quot;; break;
  case ONIGERR_INVALID_GROUP_NAME:
    p = &quot;invalid group name &lt;%n&gt;&quot;; break;
  case ONIGERR_INVALID_CHAR_IN_GROUP_NAME:
    p = &quot;invalid char in group name &lt;%n&gt;&quot;; break;
  case ONIGERR_UNDEFINED_NAME_REFERENCE:
    p = &quot;undefined name &lt;%n&gt; reference&quot;; break;
  case ONIGERR_UNDEFINED_GROUP_REFERENCE:
    p = &quot;undefined group &lt;%n&gt; reference&quot;; break;
  case ONIGERR_MULTIPLEX_DEFINED_NAME:
    p = &quot;multiplex defined name &lt;%n&gt;&quot;; break;
  case ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL:
    p = &quot;multiplex definition name &lt;%n&gt; call&quot;; break;
  case ONIGERR_NEVER_ENDING_RECURSION:
    p = &quot;never ending recursion&quot;; break;
  case ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY:
    p = &quot;group number is too big for capture history&quot;; break;
  case ONIGERR_INVALID_CHAR_PROPERTY_NAME:
    p = &quot;invalid character property name {%n}&quot;; break;
  case ONIGERR_INVALID_IF_ELSE_SYNTAX:
    p = &quot;invalid if-else syntax&quot;; break;
  case ONIGERR_INVALID_ABSENT_GROUP_PATTERN:
    p = &quot;invalid absent group pattern&quot;; break;
  case ONIGERR_INVALID_ABSENT_GROUP_GENERATOR_PATTERN:
    p = &quot;invalid absent group generator pattern&quot;; break;
  case ONIGERR_INVALID_CALLOUT_PATTERN:
    p = &quot;invalid callout pattern&quot;; break;
  case ONIGERR_INVALID_CALLOUT_NAME:
    p = &quot;invalid callout name&quot;; break;
  case ONIGERR_UNDEFINED_CALLOUT_NAME:
    p = &quot;undefined callout name&quot;; break;
  case ONIGERR_INVALID_CALLOUT_BODY:
    p = &quot;invalid callout body&quot;; break;
  case ONIGERR_INVALID_CALLOUT_TAG_NAME:
    p = &quot;invalid callout tag name&quot;; break;
  case ONIGERR_INVALID_CALLOUT_ARG:
    p = &quot;invalid callout arg&quot;; break;
  case ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION:
    p = &quot;not supported encoding combination&quot;; break;
  case ONIGERR_INVALID_COMBINATION_OF_OPTIONS:
    p = &quot;invalid combination of options&quot;; break;
  case ONIGERR_VERY_INEFFICIENT_PATTERN:
    p = &quot;very inefficient pattern&quot;; break;
  case ONIGERR_LIBRARY_IS_NOT_INITIALIZED:
    p = &quot;library is not initialized&quot;; break;

  default:
    p = &quot;undefined error code&quot;; break;
  }

  return (UChar* )p;
}

static void sprint_byte(char* s, unsigned int v)
{
  xsnprintf(s, 3, &quot;%02x&quot;, (v &amp; 0377));
}

static void sprint_byte_with_x(char* s, unsigned int v)
{
  xsnprintf(s, 5, &quot;\\x%02x&quot;, (v &amp; 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 (!s) {
    len = 0;
    *is_over = 0;
  }
  else if (ONIGENC_MBC_MINLEN(enc) &gt; 1) {
    p = s;
    len = 0;
    while (p &lt; end) {
      code = ONIGENC_MBC_TO_CODE(enc, p, end);
      if (code &gt;= 0x80) {
        if (code &gt; 0xffff &amp;&amp; len + 10 &lt;= buf_size) {
          sprint_byte_with_x((char*)(&amp;(buf[len])), (unsigned int)(code &gt;&gt; 24));
          sprint_byte((char*)(&amp;(buf[len+4])),      (unsigned int)(code &gt;&gt; 16));
          sprint_byte((char*)(&amp;(buf[len+6])),      (unsigned int)(code &gt;&gt;  8));
          sprint_byte((char*)(&amp;(buf[len+8])),      (unsigned int)code);
          len += 10;
        }
        else if (len + 6 &lt;= buf_size) {
          sprint_byte_with_x((char*)(&amp;(buf[len])), (unsigned int)(code &gt;&gt; 8));
          sprint_byte((char*)(&amp;(buf[len+4])),      (unsigned int)code);
          len += 6;
        }
        else {
          break;
        }
      }
      else {
        buf[len++] = (UChar )code;
      }

      p += enclen(enc, p);
      if (len &gt;= buf_size) break;
    }

    *is_over = p &lt; end;
  }
  else {
    len = MIN((int )(end - s), buf_size);
    xmemcpy(buf, s, (size_t )len);
    *is_over = ((buf_size &lt; (end - s)) ? 1 : 0);
  }

  return len;
}


extern int
onig_is_error_code_needs_param(int 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:
    return 1;
  default:
    return 0;
  }
}

/* for ONIG_MAX_ERROR_MESSAGE_LEN */
#define MAX_ERROR_PAR_LEN   30

extern int ONIG_VARIADIC_FUNC_ATTR
onig_error_code_to_str(UChar* s, int code, ...)
{
  UChar *p, *q;
  OnigErrorInfo* einfo;
  int len, 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-&gt;enc, einfo-&gt;par, einfo-&gt;par_end,
                   parbuf, MAX_ERROR_PAR_LEN - 3, &amp;is_over);
    q = onig_error_code_to_format(code);
    p = s;
    while (*q != &#039;\0&#039;) {
      if (*q == &#039;%&#039;) {
        q++;
        if (*q == &#039;n&#039;) { /* &#039;%n&#039;: name */
          xmemcpy(p, parbuf, len);
          p += len;
          if (is_over != 0) {
            xmemcpy(p, &quot;...&quot;, 3);
            p += 3;
          }
          q++;
        }
        else
          goto normal_char;
      }
      else {
      normal_char:
        *p++ = *q++;
      }
    }
    *p = &#039;\0&#039;;
    len = (int )(p - s);
    break;

  default:
    q = onig_error_code_to_format(code);
    len = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, q);
    xmemcpy(s, q, len);
    s[len] = &#039;\0&#039;;
    break;
  }

  va_end(vargs);
  return len;
}


void ONIG_VARIADIC_FUNC_ATTR
onig_snprintf_with_pattern(UChar buf[], int bufsize, OnigEncoding enc,
                           UChar* pat, UChar* pat_end, const char *fmt, ...)
{
  int n, need, len;
  UChar *p, *s, *bp;
  UChar bs[6];
  va_list args;

  va_start(args, fmt);
  n = xvsnprintf((char* )buf, bufsize, fmt, args);
  va_end(args);

  need = (int )(pat_end - pat) * 4 + 4;

  if (n + need &lt; bufsize) {
    xstrcat((char* )buf, &quot;: /&quot;, bufsize);
    s = buf + onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, buf);

    p = pat;
    while (p &lt; pat_end) {
      if (ONIGENC_IS_MBC_HEAD(enc, p)) {
        len = enclen(enc, p);
        if (ONIGENC_MBC_MINLEN(enc) == 1) {
          while (len-- &gt; 0) *s++ = *p++;
        }
        else { /* for UTF16/32 */
          int blen;

          while (len-- &gt; 0) {
            sprint_byte_with_x((char* )bs, (unsigned int )(*p++));
            blen = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs);
            bp = bs;
            while (blen-- &gt; 0) *s++ = *bp++;
          }
        }
      }
      else if (*p == &#039;\\&#039;) {
        *s++ = *p++;
        len = enclen(enc, p);
        while (len-- &gt; 0) *s++ = *p++;
      }
      else if (*p == &#039;/&#039;) {
        *s++ = (unsigned char )&#039;\\&#039;;
        *s++ = *p++;
      }
      else if (!ONIGENC_IS_CODE_PRINT(enc, *p) &amp;&amp;
               !ONIGENC_IS_CODE_SPACE(enc, *p)) {
        sprint_byte_with_x((char* )bs, (unsigned int )(*p++));
        len = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs);
        bp = bs;
        while (len-- &gt; 0) *s++ = *bp++;
      }
      else {
        *s++ = *p++;
      }
    }

    *s++ = &#039;/&#039;;
    *s   = &#039;\0&#039;;
  }
}
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