diff -r 000000000000 -r dd21522fd290 webengine/osswebengine/JavaScriptCore/kjs/regexp.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/JavaScriptCore/kjs/regexp.cpp	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,218 @@
+// -*- c-basic-offset: 2 -*-
+/*
+ *  This file is part of the KDE libraries
+ *  Copyright (C) 1999-2001,2004 Harri Porten (porten@kde.org)
+ *
+ *  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 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 Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "config.h"
+#include "regexp.h"
+
+#include "lexer.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+namespace KJS {
+
+RegExp::RegExp(const UString &p, int flags)
+  : m_flags(flags), m_constructionError(0), m_numSubPatterns(0)
+{
+#if HAVE(PCREPOSIX)
+
+  int options = PCRE_UTF8;
+  // Note: the Global flag is already handled by RegExpProtoFunc::execute.
+  // FIXME: That last comment is dubious. Not all RegExps get run through RegExpProtoFunc::execute.
+  if (flags & IgnoreCase)
+    options |= PCRE_CASELESS;
+  if (flags & Multiline)
+    options |= PCRE_MULTILINE;
+
+  const char *errorMessage;
+  int errorOffset;
+  
+  m_regex = pcre_compile(reinterpret_cast<const uint16_t*>(p.data()), p.size(),
+                        options, &errorMessage, &errorOffset, NULL);
+  if (!m_regex) {
+    m_constructionError = strdup(errorMessage);
+    return;
+  }
+
+#ifdef PCRE_INFO_CAPTURECOUNT
+  // Get number of subpatterns that will be returned.
+  pcre_fullinfo(m_regex, NULL, PCRE_INFO_CAPTURECOUNT, &m_numSubPatterns);
+#endif
+
+#else /* HAVE(PCREPOSIX) */
+
+  int regflags = 0;
+#ifdef REG_EXTENDED
+  regflags |= REG_EXTENDED;
+#endif
+#ifdef REG_ICASE
+  if ( f & IgnoreCase )
+    regflags |= REG_ICASE;
+#endif
+
+  //NOTE: Multiline is not feasible with POSIX regex.
+  //if ( f & Multiline )
+  //    ;
+  // Note: the Global flag is already handled by RegExpProtoFunc::execute
+
+  // FIXME: support \u Unicode escapes.
+
+  int errorCode = regcomp(&m_regex, intern.ascii(), regflags);
+  if (errorCode != 0) {
+    char errorMessage[80];
+    regerror(errorCode, &m_regex, errorMessage, sizeof errorMessage);
+    m_constructionError = strdup(errorMessage);
+  }
+
+#endif
+}
+
+RegExp::~RegExp()
+{
+#if HAVE(PCREPOSIX)
+  pcre_free(m_regex);
+#else
+  /* TODO: is this really okay after an error ? */
+  regfree(&m_regex);
+#endif
+  free(m_constructionError);
+}
+
+UString RegExp::match(const UString &s, int i, int *pos, int **ovector)
+{
+  if (i < 0)
+    i = 0;
+  int dummyPos;
+  if (!pos)
+    pos = &dummyPos;
+  *pos = -1;
+  if (ovector)
+    *ovector = 0;
+
+  if (i > s.size() || s.isNull())
+    return UString::null();
+
+#if HAVE(PCREPOSIX)
+
+  if (!m_regex)
+    return UString::null();
+
+  // Set up the offset vector for the result.
+  // First 2/3 used for result, the last third used by PCRE.
+  int *offsetVector;
+  int offsetVectorSize;
+  int fixedSizeOffsetVector[3];
+  if (!ovector) {
+    offsetVectorSize = 3;
+    offsetVector = fixedSizeOffsetVector;
+  } else {
+    offsetVectorSize = (m_numSubPatterns + 1) * 3;
+    offsetVector = new int [offsetVectorSize];
+  }
+
+  const int numMatches = pcre_exec(m_regex, NULL, reinterpret_cast<const uint16_t *>(s.data()), s.size(), i, 0, offsetVector, offsetVectorSize);
+
+  if (numMatches < 0) {
+#ifndef NDEBUG
+    if (numMatches != PCRE_ERROR_NOMATCH)
+      fprintf(stderr, "KJS: pcre_exec() failed with result %d\n", numMatches);
+#endif
+    if (offsetVector != fixedSizeOffsetVector)
+      delete [] offsetVector;
+    return UString::null();
+  }
+
+  *pos = offsetVector[0];
+  if (ovector)
+    *ovector = offsetVector;
+  return s.substr(offsetVector[0], offsetVector[1] - offsetVector[0]);
+
+#else
+
+  const unsigned maxMatch = 10;
+  regmatch_t rmatch[maxMatch];
+
+  char *str = strdup(s.ascii()); // TODO: why ???
+  if (regexec(&m_regex, str + i, maxMatch, rmatch, 0)) {
+    free(str);
+    return UString::null();
+  }
+  free(str);
+
+  if (!ovector) {
+    *pos = rmatch[0].rm_so + i;
+    return s.substr(rmatch[0].rm_so + i, rmatch[0].rm_eo - rmatch[0].rm_so);
+  }
+
+  // map rmatch array to ovector used in PCRE case
+  m_numSubPatterns = 0;
+  for(unsigned j = 1; j < maxMatch && rmatch[j].rm_so >= 0 ; j++)
+      m_numSubPatterns++;
+  int ovecsize = (m_numSubPatterns+1)*3; // see above
+  *ovector = new int[ovecsize];
+  for (unsigned j = 0; j < m_numSubPatterns + 1; j++) {
+    if (j>maxMatch)
+      break;
+    (*ovector)[2*j] = rmatch[j].rm_so + i;
+    (*ovector)[2*j+1] = rmatch[j].rm_eo + i;
+  }
+
+  *pos = (*ovector)[0];
+  return s.substr((*ovector)[0], (*ovector)[1] - (*ovector)[0]);
+
+#endif
+}
+
+bool RegExp::isHexDigit(UChar uc)
+{
+  int c = uc.unicode();
+  return (c >= '0' && c <= '9' ||
+          c >= 'a' && c <= 'f' ||
+          c >= 'A' && c <= 'F');
+}
+
+unsigned char RegExp::convertHex(int c)
+{
+  if (c >= '0' && c <= '9')
+    return static_cast<unsigned char>(c - '0');
+  if (c >= 'a' && c <= 'f')
+    return static_cast<unsigned char>(c - 'a' + 10);
+  return static_cast<unsigned char>(c - 'A' + 10);
+}
+
+unsigned char RegExp::convertHex(int c1, int c2)
+{
+  return ((convertHex(c1) << 4) + convertHex(c2));
+}
+
+UChar RegExp::convertUnicode(UChar uc1, UChar uc2, UChar uc3, UChar uc4)
+{
+  int c1 = uc1.unicode();
+  int c2 = uc2.unicode();
+  int c3 = uc3.unicode();
+  int c4 = uc4.unicode();
+  return UChar((convertHex(c1) << 4) + convertHex(c2),
+               (convertHex(c3) << 4) + convertHex(c4));
+}
+
+} // namespace KJS