Restoring authorship annotation for <aozeritsky@yandex-team.ru>. Commit 2 of 2.

1 files changed, 707 insertions, 707 deletions

diff --git a/contrib/libs/pcre/pcrecpp.h b/contrib/libs/pcre/pcrecpp.h
index dffe9a34ad..e57066b545 100644
--- a/contrib/libs/pcre/pcrecpp.h
+++ b/contrib/libs/pcre/pcrecpp.h
@@ -1,710 +1,710 @@
-// Copyright (c) 2005, Google Inc. 
-// All rights reserved. 
-// 
-// Redistribution and use in source and binary forms, with or without 
-// modification, are permitted provided that the following conditions are 
-// met: 
-// 
-//     * Redistributions of source code must retain the above copyright 
-// notice, this list of conditions and the following disclaimer. 
-//     * 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. 
-//     * Neither the name of Google Inc. nor the names of its 
-// contributors may be used to endorse or promote products derived from 
-// this software without specific prior written permission. 
-// 
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT 
-// OWNER 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. 
-// 
-// Author: Sanjay Ghemawat 
-// Support for PCRE_XXX modifiers added by Giuseppe Maxia, July 2005 
- 
-#ifndef _PCRECPP_H 
-#define _PCRECPP_H 
- 
-// C++ interface to the pcre regular-expression library.  RE supports 
-// Perl-style regular expressions (with extensions like \d, \w, \s, 
-// ...). 
-// 
-// ----------------------------------------------------------------------- 
-// REGEXP SYNTAX: 
-// 
-// This module is part of the pcre library and hence supports its syntax 
-// for regular expressions. 
-// 
-// The syntax is pretty similar to Perl's.  For those not familiar 
-// with Perl's regular expressions, here are some examples of the most 
-// commonly used extensions: 
-// 
-//   "hello (\\w+) world"  -- \w matches a "word" character 
-//   "version (\\d+)"      -- \d matches a digit 
-//   "hello\\s+world"      -- \s matches any whitespace character 
-//   "\\b(\\w+)\\b"        -- \b matches empty string at a word boundary 
-//   "(?i)hello"           -- (?i) turns on case-insensitive matching 
-//   "/\\*(.*?)\\*/"       -- .*? matches . minimum no. of times possible 
-// 
-// ----------------------------------------------------------------------- 
-// MATCHING INTERFACE: 
-// 
-// The "FullMatch" operation checks that supplied text matches a 
-// supplied pattern exactly. 
-// 
-// Example: successful match 
-//    pcrecpp::RE re("h.*o"); 
-//    re.FullMatch("hello"); 
-// 
-// Example: unsuccessful match (requires full match): 
-//    pcrecpp::RE re("e"); 
-//    !re.FullMatch("hello"); 
-// 
-// Example: creating a temporary RE object: 
-//    pcrecpp::RE("h.*o").FullMatch("hello"); 
-// 
-// You can pass in a "const char*" or a "string" for "text".  The 
-// examples below tend to use a const char*. 
-// 
-// You can, as in the different examples above, store the RE object 
-// explicitly in a variable or use a temporary RE object.  The 
-// examples below use one mode or the other arbitrarily.  Either 
-// could correctly be used for any of these examples. 
-// 
-// ----------------------------------------------------------------------- 
-// MATCHING WITH SUB-STRING EXTRACTION: 
-// 
-// You can supply extra pointer arguments to extract matched subpieces. 
-// 
-// Example: extracts "ruby" into "s" and 1234 into "i" 
-//    int i; 
-//    string s; 
-//    pcrecpp::RE re("(\\w+):(\\d+)"); 
-//    re.FullMatch("ruby:1234", &s, &i); 
-// 
-// Example: does not try to extract any extra sub-patterns 
-//    re.FullMatch("ruby:1234", &s); 
-// 
-// Example: does not try to extract into NULL 
-//    re.FullMatch("ruby:1234", NULL, &i); 
-// 
-// Example: integer overflow causes failure 
-//    !re.FullMatch("ruby:1234567891234", NULL, &i); 
-// 
-// Example: fails because there aren't enough sub-patterns: 
-//    !pcrecpp::RE("\\w+:\\d+").FullMatch("ruby:1234", &s); 
-// 
-// Example: fails because string cannot be stored in integer 
-//    !pcrecpp::RE("(.*)").FullMatch("ruby", &i); 
-// 
-// The provided pointer arguments can be pointers to any scalar numeric 
-// type, or one of 
-//    string        (matched piece is copied to string) 
-//    StringPiece   (StringPiece is mutated to point to matched piece) 
-//    T             (where "bool T::ParseFrom(const char*, int)" exists) 
-//    NULL          (the corresponding matched sub-pattern is not copied) 
-// 
-// CAVEAT: An optional sub-pattern that does not exist in the matched 
-// string is assigned the empty string.  Therefore, the following will 
-// return false (because the empty string is not a valid number): 
-//    int number; 
-//    pcrecpp::RE::FullMatch("abc", "[a-z]+(\\d+)?", &number); 
-// 
-// ----------------------------------------------------------------------- 
-// DO_MATCH 
-// 
-// The matching interface supports at most 16 arguments per call. 
-// If you need more, consider using the more general interface 
-// pcrecpp::RE::DoMatch().  See pcrecpp.h for the signature for DoMatch. 
-// 
-// ----------------------------------------------------------------------- 
-// PARTIAL MATCHES 
-// 
-// You can use the "PartialMatch" operation when you want the pattern 
-// to match any substring of the text. 
-// 
-// Example: simple search for a string: 
-//    pcrecpp::RE("ell").PartialMatch("hello"); 
-// 
-// Example: find first number in a string: 
-//    int number; 
-//    pcrecpp::RE re("(\\d+)"); 
-//    re.PartialMatch("x*100 + 20", &number); 
-//    assert(number == 100); 
-// 
-// ----------------------------------------------------------------------- 
-// UTF-8 AND THE MATCHING INTERFACE: 
-// 
-// By default, pattern and text are plain text, one byte per character. 
-// The UTF8 flag, passed to the constructor, causes both pattern 
-// and string to be treated as UTF-8 text, still a byte stream but 
-// potentially multiple bytes per character. In practice, the text 
-// is likelier to be UTF-8 than the pattern, but the match returned 
-// may depend on the UTF8 flag, so always use it when matching 
-// UTF8 text.  E.g., "." will match one byte normally but with UTF8 
-// set may match up to three bytes of a multi-byte character. 
-// 
-// Example: 
-//    pcrecpp::RE_Options options; 
-//    options.set_utf8(); 
-//    pcrecpp::RE re(utf8_pattern, options); 
-//    re.FullMatch(utf8_string); 
-// 
-// Example: using the convenience function UTF8(): 
-//    pcrecpp::RE re(utf8_pattern, pcrecpp::UTF8()); 
-//    re.FullMatch(utf8_string); 
-// 
-// NOTE: The UTF8 option is ignored if pcre was not configured with the 
-//       --enable-utf8 flag. 
-// 
-// ----------------------------------------------------------------------- 
-// PASSING MODIFIERS TO THE REGULAR EXPRESSION ENGINE 
-// 
-// PCRE defines some modifiers to change the behavior of the regular 
-// expression engine. 
-// The C++ wrapper defines an auxiliary class, RE_Options, as a vehicle 
-// to pass such modifiers to a RE class. 
-// 
-// Currently, the following modifiers are supported 
-// 
-//    modifier              description               Perl corresponding 
-// 
-//    PCRE_CASELESS         case insensitive match    /i 
-//    PCRE_MULTILINE        multiple lines match      /m 
-//    PCRE_DOTALL           dot matches newlines      /s 
-//    PCRE_DOLLAR_ENDONLY   $ matches only at end     N/A 
-//    PCRE_EXTRA            strict escape parsing     N/A 
-//    PCRE_EXTENDED         ignore whitespaces        /x 
-//    PCRE_UTF8             handles UTF8 chars        built-in 
-//    PCRE_UNGREEDY         reverses * and *?         N/A 
-//    PCRE_NO_AUTO_CAPTURE  disables matching parens  N/A (*) 
-// 
-// (For a full account on how each modifier works, please check the 
-// PCRE API reference manual). 
-// 
-// (*) Both Perl and PCRE allow non matching parentheses by means of the 
-// "?:" modifier within the pattern itself. e.g. (?:ab|cd) does not 
-// capture, while (ab|cd) does. 
-// 
-// For each modifier, there are two member functions whose name is made 
-// out of the modifier in lowercase, without the "PCRE_" prefix. For 
-// instance, PCRE_CASELESS is handled by 
-//    bool caseless(), 
-// which returns true if the modifier is set, and 
-//    RE_Options & set_caseless(bool), 
-// which sets or unsets the modifier. 
-// 
-// Moreover, PCRE_EXTRA_MATCH_LIMIT can be accessed through the 
-// set_match_limit() and match_limit() member functions. 
-// Setting match_limit to a non-zero value will limit the executation of 
-// pcre to keep it from doing bad things like blowing the stack or taking 
-// an eternity to return a result.  A value of 5000 is good enough to stop 
-// stack blowup in a 2MB thread stack.  Setting match_limit to zero will 
-// disable match limiting.  Alternately, you can set match_limit_recursion() 
-// which uses PCRE_EXTRA_MATCH_LIMIT_RECURSION to limit how much pcre 
-// recurses.  match_limit() caps the number of matches pcre does; 
-// match_limit_recrusion() caps the depth of recursion. 
-// 
-// Normally, to pass one or more modifiers to a RE class, you declare 
-// a RE_Options object, set the appropriate options, and pass this 
-// object to a RE constructor. Example: 
-// 
-//    RE_options opt; 
-//    opt.set_caseless(true); 
-// 
-//    if (RE("HELLO", opt).PartialMatch("hello world")) ... 
-// 
-// RE_options has two constructors. The default constructor takes no 
-// arguments and creates a set of flags that are off by default. 
-// 
-// The optional parameter 'option_flags' is to facilitate transfer 
-// of legacy code from C programs.  This lets you do 
-//    RE(pattern, RE_Options(PCRE_CASELESS|PCRE_MULTILINE)).PartialMatch(str); 
-// 
-// But new code is better off doing 
-//    RE(pattern, 
-//      RE_Options().set_caseless(true).set_multiline(true)).PartialMatch(str); 
-// (See below) 
-// 
-// If you are going to pass one of the most used modifiers, there are some 
-// convenience functions that return a RE_Options class with the 
-// appropriate modifier already set: 
-// CASELESS(), UTF8(), MULTILINE(), DOTALL(), EXTENDED() 
-// 
-// If you need to set several options at once, and you don't want to go 
-// through the pains of declaring a RE_Options object and setting several 
-// options, there is a parallel method that give you such ability on the 
-// fly. You can concatenate several set_xxxxx member functions, since each 
-// of them returns a reference to its class object.  e.g.: to pass 
-// PCRE_CASELESS, PCRE_EXTENDED, and PCRE_MULTILINE to a RE with one 
-// statement, you may write 
-// 
-//    RE(" ^ xyz \\s+ .* blah$", RE_Options() 
-//                            .set_caseless(true) 
-//                            .set_extended(true) 
-//                            .set_multiline(true)).PartialMatch(sometext); 
-// 
-// ----------------------------------------------------------------------- 
-// SCANNING TEXT INCREMENTALLY 
-// 
-// The "Consume" operation may be useful if you want to repeatedly 
-// match regular expressions at the front of a string and skip over 
-// them as they match.  This requires use of the "StringPiece" type, 
-// which represents a sub-range of a real string.  Like RE, StringPiece 
-// is defined in the pcrecpp namespace. 
-// 
-// Example: read lines of the form "var = value" from a string. 
-//    string contents = ...;                 // Fill string somehow 
-//    pcrecpp::StringPiece input(contents);  // Wrap in a StringPiece 
-// 
-//    string var; 
-//    int value; 
-//    pcrecpp::RE re("(\\w+) = (\\d+)\n"); 
-//    while (re.Consume(&input, &var, &value)) { 
-//      ...; 
-//    } 
-// 
-// Each successful call to "Consume" will set "var/value", and also 
-// advance "input" so it points past the matched text. 
-// 
-// The "FindAndConsume" operation is similar to "Consume" but does not 
-// anchor your match at the beginning of the string.  For example, you 
-// could extract all words from a string by repeatedly calling 
-//     pcrecpp::RE("(\\w+)").FindAndConsume(&input, &word) 
-// 
-// ----------------------------------------------------------------------- 
-// PARSING HEX/OCTAL/C-RADIX NUMBERS 
-// 
-// By default, if you pass a pointer to a numeric value, the 
-// corresponding text is interpreted as a base-10 number.  You can 
-// instead wrap the pointer with a call to one of the operators Hex(), 
-// Octal(), or CRadix() to interpret the text in another base.  The 
-// CRadix operator interprets C-style "0" (base-8) and "0x" (base-16) 
-// prefixes, but defaults to base-10. 
-// 
-// Example: 
-//   int a, b, c, d; 
-//   pcrecpp::RE re("(.*) (.*) (.*) (.*)"); 
-//   re.FullMatch("100 40 0100 0x40", 
-//                pcrecpp::Octal(&a), pcrecpp::Hex(&b), 
-//                pcrecpp::CRadix(&c), pcrecpp::CRadix(&d)); 
-// will leave 64 in a, b, c, and d. 
-// 
-// ----------------------------------------------------------------------- 
-// REPLACING PARTS OF STRINGS 
-// 
-// You can replace the first match of "pattern" in "str" with 
-// "rewrite".  Within "rewrite", backslash-escaped digits (\1 to \9) 
-// can be used to insert text matching corresponding parenthesized 
-// group from the pattern.  \0 in "rewrite" refers to the entire 
-// matching text.  E.g., 
-// 
-//   string s = "yabba dabba doo"; 
-//   pcrecpp::RE("b+").Replace("d", &s); 
-// 
-// will leave "s" containing "yada dabba doo".  The result is true if 
-// the pattern matches and a replacement occurs, or false otherwise. 
-// 
-// GlobalReplace() is like Replace(), except that it replaces all 
-// occurrences of the pattern in the string with the rewrite. 
-// Replacements are not subject to re-matching.  E.g., 
-// 
-//   string s = "yabba dabba doo"; 
-//   pcrecpp::RE("b+").GlobalReplace("d", &s); 
-// 
-// will leave "s" containing "yada dada doo".  It returns the number 
-// of replacements made. 
-// 
-// Extract() is like Replace(), except that if the pattern matches, 
-// "rewrite" is copied into "out" (an additional argument) with 
-// substitutions.  The non-matching portions of "text" are ignored. 
-// Returns true iff a match occurred and the extraction happened 
-// successfully.  If no match occurs, the string is left unaffected. 
- 
- 
-#include <string> 
+// Copyright (c) 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * 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.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
+// OWNER 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.
+//
+// Author: Sanjay Ghemawat
+// Support for PCRE_XXX modifiers added by Giuseppe Maxia, July 2005
+
+#ifndef _PCRECPP_H
+#define _PCRECPP_H
+
+// C++ interface to the pcre regular-expression library.  RE supports
+// Perl-style regular expressions (with extensions like \d, \w, \s,
+// ...).
+//
+// -----------------------------------------------------------------------
+// REGEXP SYNTAX:
+//
+// This module is part of the pcre library and hence supports its syntax
+// for regular expressions.
+//
+// The syntax is pretty similar to Perl's.  For those not familiar
+// with Perl's regular expressions, here are some examples of the most
+// commonly used extensions:
+//
+//   "hello (\\w+) world"  -- \w matches a "word" character
+//   "version (\\d+)"      -- \d matches a digit
+//   "hello\\s+world"      -- \s matches any whitespace character
+//   "\\b(\\w+)\\b"        -- \b matches empty string at a word boundary
+//   "(?i)hello"           -- (?i) turns on case-insensitive matching
+//   "/\\*(.*?)\\*/"       -- .*? matches . minimum no. of times possible
+//
+// -----------------------------------------------------------------------
+// MATCHING INTERFACE:
+//
+// The "FullMatch" operation checks that supplied text matches a
+// supplied pattern exactly.
+//
+// Example: successful match
+//    pcrecpp::RE re("h.*o");
+//    re.FullMatch("hello");
+//
+// Example: unsuccessful match (requires full match):
+//    pcrecpp::RE re("e");
+//    !re.FullMatch("hello");
+//
+// Example: creating a temporary RE object:
+//    pcrecpp::RE("h.*o").FullMatch("hello");
+//
+// You can pass in a "const char*" or a "string" for "text".  The
+// examples below tend to use a const char*.
+//
+// You can, as in the different examples above, store the RE object
+// explicitly in a variable or use a temporary RE object.  The
+// examples below use one mode or the other arbitrarily.  Either
+// could correctly be used for any of these examples.
+//
+// -----------------------------------------------------------------------
+// MATCHING WITH SUB-STRING EXTRACTION:
+//
+// You can supply extra pointer arguments to extract matched subpieces.
+//
+// Example: extracts "ruby" into "s" and 1234 into "i"
+//    int i;
+//    string s;
+//    pcrecpp::RE re("(\\w+):(\\d+)");
+//    re.FullMatch("ruby:1234", &s, &i);
+//
+// Example: does not try to extract any extra sub-patterns
+//    re.FullMatch("ruby:1234", &s);
+//
+// Example: does not try to extract into NULL
+//    re.FullMatch("ruby:1234", NULL, &i);
+//
+// Example: integer overflow causes failure
+//    !re.FullMatch("ruby:1234567891234", NULL, &i);
+//
+// Example: fails because there aren't enough sub-patterns:
+//    !pcrecpp::RE("\\w+:\\d+").FullMatch("ruby:1234", &s);
+//
+// Example: fails because string cannot be stored in integer
+//    !pcrecpp::RE("(.*)").FullMatch("ruby", &i);
+//
+// The provided pointer arguments can be pointers to any scalar numeric
+// type, or one of
+//    string        (matched piece is copied to string)
+//    StringPiece   (StringPiece is mutated to point to matched piece)
+//    T             (where "bool T::ParseFrom(const char*, int)" exists)
+//    NULL          (the corresponding matched sub-pattern is not copied)
+//
+// CAVEAT: An optional sub-pattern that does not exist in the matched
+// string is assigned the empty string.  Therefore, the following will
+// return false (because the empty string is not a valid number):
+//    int number;
+//    pcrecpp::RE::FullMatch("abc", "[a-z]+(\\d+)?", &number);
+//
+// -----------------------------------------------------------------------
+// DO_MATCH
+//
+// The matching interface supports at most 16 arguments per call.
+// If you need more, consider using the more general interface
+// pcrecpp::RE::DoMatch().  See pcrecpp.h for the signature for DoMatch.
+//
+// -----------------------------------------------------------------------
+// PARTIAL MATCHES
+//
+// You can use the "PartialMatch" operation when you want the pattern
+// to match any substring of the text.
+//
+// Example: simple search for a string:
+//    pcrecpp::RE("ell").PartialMatch("hello");
+//
+// Example: find first number in a string:
+//    int number;
+//    pcrecpp::RE re("(\\d+)");
+//    re.PartialMatch("x*100 + 20", &number);
+//    assert(number == 100);
+//
+// -----------------------------------------------------------------------
+// UTF-8 AND THE MATCHING INTERFACE:
+//
+// By default, pattern and text are plain text, one byte per character.
+// The UTF8 flag, passed to the constructor, causes both pattern
+// and string to be treated as UTF-8 text, still a byte stream but
+// potentially multiple bytes per character. In practice, the text
+// is likelier to be UTF-8 than the pattern, but the match returned
+// may depend on the UTF8 flag, so always use it when matching
+// UTF8 text.  E.g., "." will match one byte normally but with UTF8
+// set may match up to three bytes of a multi-byte character.
+//
+// Example:
+//    pcrecpp::RE_Options options;
+//    options.set_utf8();
+//    pcrecpp::RE re(utf8_pattern, options);
+//    re.FullMatch(utf8_string);
+//
+// Example: using the convenience function UTF8():
+//    pcrecpp::RE re(utf8_pattern, pcrecpp::UTF8());
+//    re.FullMatch(utf8_string);
+//
+// NOTE: The UTF8 option is ignored if pcre was not configured with the
+//       --enable-utf8 flag.
+//
+// -----------------------------------------------------------------------
+// PASSING MODIFIERS TO THE REGULAR EXPRESSION ENGINE
+//
+// PCRE defines some modifiers to change the behavior of the regular
+// expression engine.
+// The C++ wrapper defines an auxiliary class, RE_Options, as a vehicle
+// to pass such modifiers to a RE class.
+//
+// Currently, the following modifiers are supported
+//
+//    modifier              description               Perl corresponding
+//
+//    PCRE_CASELESS         case insensitive match    /i
+//    PCRE_MULTILINE        multiple lines match      /m
+//    PCRE_DOTALL           dot matches newlines      /s
+//    PCRE_DOLLAR_ENDONLY   $ matches only at end     N/A
+//    PCRE_EXTRA            strict escape parsing     N/A
+//    PCRE_EXTENDED         ignore whitespaces        /x
+//    PCRE_UTF8             handles UTF8 chars        built-in
+//    PCRE_UNGREEDY         reverses * and *?         N/A
+//    PCRE_NO_AUTO_CAPTURE  disables matching parens  N/A (*)
+//
+// (For a full account on how each modifier works, please check the
+// PCRE API reference manual).
+//
+// (*) Both Perl and PCRE allow non matching parentheses by means of the
+// "?:" modifier within the pattern itself. e.g. (?:ab|cd) does not
+// capture, while (ab|cd) does.
+//
+// For each modifier, there are two member functions whose name is made
+// out of the modifier in lowercase, without the "PCRE_" prefix. For
+// instance, PCRE_CASELESS is handled by
+//    bool caseless(),
+// which returns true if the modifier is set, and
+//    RE_Options & set_caseless(bool),
+// which sets or unsets the modifier.
+//
+// Moreover, PCRE_EXTRA_MATCH_LIMIT can be accessed through the
+// set_match_limit() and match_limit() member functions.
+// Setting match_limit to a non-zero value will limit the executation of
+// pcre to keep it from doing bad things like blowing the stack or taking
+// an eternity to return a result.  A value of 5000 is good enough to stop
+// stack blowup in a 2MB thread stack.  Setting match_limit to zero will
+// disable match limiting.  Alternately, you can set match_limit_recursion()
+// which uses PCRE_EXTRA_MATCH_LIMIT_RECURSION to limit how much pcre
+// recurses.  match_limit() caps the number of matches pcre does;
+// match_limit_recrusion() caps the depth of recursion.
+//
+// Normally, to pass one or more modifiers to a RE class, you declare
+// a RE_Options object, set the appropriate options, and pass this
+// object to a RE constructor. Example:
+//
+//    RE_options opt;
+//    opt.set_caseless(true);
+//
+//    if (RE("HELLO", opt).PartialMatch("hello world")) ...
+//
+// RE_options has two constructors. The default constructor takes no
+// arguments and creates a set of flags that are off by default.
+//
+// The optional parameter 'option_flags' is to facilitate transfer
+// of legacy code from C programs.  This lets you do
+//    RE(pattern, RE_Options(PCRE_CASELESS|PCRE_MULTILINE)).PartialMatch(str);
+//
+// But new code is better off doing
+//    RE(pattern,
+//      RE_Options().set_caseless(true).set_multiline(true)).PartialMatch(str);
+// (See below)
+//
+// If you are going to pass one of the most used modifiers, there are some
+// convenience functions that return a RE_Options class with the
+// appropriate modifier already set:
+// CASELESS(), UTF8(), MULTILINE(), DOTALL(), EXTENDED()
+//
+// If you need to set several options at once, and you don't want to go
+// through the pains of declaring a RE_Options object and setting several
+// options, there is a parallel method that give you such ability on the
+// fly. You can concatenate several set_xxxxx member functions, since each
+// of them returns a reference to its class object.  e.g.: to pass
+// PCRE_CASELESS, PCRE_EXTENDED, and PCRE_MULTILINE to a RE with one
+// statement, you may write
+//
+//    RE(" ^ xyz \\s+ .* blah$", RE_Options()
+//                            .set_caseless(true)
+//                            .set_extended(true)
+//                            .set_multiline(true)).PartialMatch(sometext);
+//
+// -----------------------------------------------------------------------
+// SCANNING TEXT INCREMENTALLY
+//
+// The "Consume" operation may be useful if you want to repeatedly
+// match regular expressions at the front of a string and skip over
+// them as they match.  This requires use of the "StringPiece" type,
+// which represents a sub-range of a real string.  Like RE, StringPiece
+// is defined in the pcrecpp namespace.
+//
+// Example: read lines of the form "var = value" from a string.
+//    string contents = ...;                 // Fill string somehow
+//    pcrecpp::StringPiece input(contents);  // Wrap in a StringPiece
+//
+//    string var;
+//    int value;
+//    pcrecpp::RE re("(\\w+) = (\\d+)\n");
+//    while (re.Consume(&input, &var, &value)) {
+//      ...;
+//    }
+//
+// Each successful call to "Consume" will set "var/value", and also
+// advance "input" so it points past the matched text.
+//
+// The "FindAndConsume" operation is similar to "Consume" but does not
+// anchor your match at the beginning of the string.  For example, you
+// could extract all words from a string by repeatedly calling
+//     pcrecpp::RE("(\\w+)").FindAndConsume(&input, &word)
+//
+// -----------------------------------------------------------------------
+// PARSING HEX/OCTAL/C-RADIX NUMBERS
+//
+// By default, if you pass a pointer to a numeric value, the
+// corresponding text is interpreted as a base-10 number.  You can
+// instead wrap the pointer with a call to one of the operators Hex(),
+// Octal(), or CRadix() to interpret the text in another base.  The
+// CRadix operator interprets C-style "0" (base-8) and "0x" (base-16)
+// prefixes, but defaults to base-10.
+//
+// Example:
+//   int a, b, c, d;
+//   pcrecpp::RE re("(.*) (.*) (.*) (.*)");
+//   re.FullMatch("100 40 0100 0x40",
+//                pcrecpp::Octal(&a), pcrecpp::Hex(&b),
+//                pcrecpp::CRadix(&c), pcrecpp::CRadix(&d));
+// will leave 64 in a, b, c, and d.
+//
+// -----------------------------------------------------------------------
+// REPLACING PARTS OF STRINGS
+//
+// You can replace the first match of "pattern" in "str" with
+// "rewrite".  Within "rewrite", backslash-escaped digits (\1 to \9)
+// can be used to insert text matching corresponding parenthesized
+// group from the pattern.  \0 in "rewrite" refers to the entire
+// matching text.  E.g.,
+//
+//   string s = "yabba dabba doo";
+//   pcrecpp::RE("b+").Replace("d", &s);
+//
+// will leave "s" containing "yada dabba doo".  The result is true if
+// the pattern matches and a replacement occurs, or false otherwise.
+//
+// GlobalReplace() is like Replace(), except that it replaces all
+// occurrences of the pattern in the string with the rewrite.
+// Replacements are not subject to re-matching.  E.g.,
+//
+//   string s = "yabba dabba doo";
+//   pcrecpp::RE("b+").GlobalReplace("d", &s);
+//
+// will leave "s" containing "yada dada doo".  It returns the number
+// of replacements made.
+//
+// Extract() is like Replace(), except that if the pattern matches,
+// "rewrite" is copied into "out" (an additional argument) with
+// substitutions.  The non-matching portions of "text" are ignored.
+// Returns true iff a match occurred and the extraction happened
+// successfully.  If no match occurs, the string is left unaffected.
+
+
+#include <string>
 #include "pcre.h"
 #include "pcrecpparg.h"   // defines the Arg class
-// This isn't technically needed here, but we include it 
-// anyway so folks who include pcrecpp.h don't have to. 
+// This isn't technically needed here, but we include it
+// anyway so folks who include pcrecpp.h don't have to.
 #include "pcre_stringpiece.h"
- 
-namespace pcrecpp { 
- 
-#define PCRE_SET_OR_CLEAR(b, o) \ 
-    if (b) all_options_ |= (o); else all_options_ &= ~(o); \ 
-    return *this 
- 
-#define PCRE_IS_SET(o)  \ 
-        (all_options_ & o) == o 
- 
-/***** Compiling regular expressions: the RE class *****/ 
- 
-// RE_Options allow you to set options to be passed along to pcre, 
-// along with other options we put on top of pcre. 
-// Only 9 modifiers, plus match_limit and match_limit_recursion, 
-// are supported now. 
-class PCRECPP_EXP_DEFN RE_Options { 
- public: 
-  // constructor 
-  RE_Options() : match_limit_(0), match_limit_recursion_(0), all_options_(0) {} 
- 
-  // alternative constructor. 
-  // To facilitate transfer of legacy code from C programs 
-  // 
-  // This lets you do 
-  //    RE(pattern, RE_Options(PCRE_CASELESS|PCRE_MULTILINE)).PartialMatch(str); 
-  // But new code is better off doing 
-  //    RE(pattern, 
-  //      RE_Options().set_caseless(true).set_multiline(true)).PartialMatch(str); 
-  RE_Options(int option_flags) : match_limit_(0), match_limit_recursion_(0), 
-                                 all_options_(option_flags) {} 
-  // we're fine with the default destructor, copy constructor, etc. 
- 
-  // accessors and mutators 
-  int match_limit() const { return match_limit_; }; 
-  RE_Options &set_match_limit(int limit) { 
-    match_limit_ = limit; 
-    return *this; 
-  } 
- 
-  int match_limit_recursion() const { return match_limit_recursion_; }; 
-  RE_Options &set_match_limit_recursion(int limit) { 
-    match_limit_recursion_ = limit; 
-    return *this; 
-  } 
- 
-  bool caseless() const { 
-    return PCRE_IS_SET(PCRE_CASELESS); 
-  } 
-  RE_Options &set_caseless(bool x) { 
-    PCRE_SET_OR_CLEAR(x, PCRE_CASELESS); 
-  } 
- 
-  bool multiline() const { 
-    return PCRE_IS_SET(PCRE_MULTILINE); 
-  } 
-  RE_Options &set_multiline(bool x) { 
-    PCRE_SET_OR_CLEAR(x, PCRE_MULTILINE); 
-  } 
- 
-  bool dotall() const { 
-    return PCRE_IS_SET(PCRE_DOTALL); 
-  } 
-  RE_Options &set_dotall(bool x) { 
-    PCRE_SET_OR_CLEAR(x, PCRE_DOTALL); 
-  } 
- 
-  bool extended() const { 
-    return PCRE_IS_SET(PCRE_EXTENDED); 
-  } 
-  RE_Options &set_extended(bool x) { 
-    PCRE_SET_OR_CLEAR(x, PCRE_EXTENDED); 
-  } 
- 
-  bool dollar_endonly() const { 
-    return PCRE_IS_SET(PCRE_DOLLAR_ENDONLY); 
-  } 
-  RE_Options &set_dollar_endonly(bool x) { 
-    PCRE_SET_OR_CLEAR(x, PCRE_DOLLAR_ENDONLY); 
-  } 
- 
-  bool extra() const { 
-    return PCRE_IS_SET(PCRE_EXTRA); 
-  } 
-  RE_Options &set_extra(bool x) { 
-    PCRE_SET_OR_CLEAR(x, PCRE_EXTRA); 
-  } 
- 
-  bool ungreedy() const { 
-    return PCRE_IS_SET(PCRE_UNGREEDY); 
-  } 
-  RE_Options &set_ungreedy(bool x) { 
-    PCRE_SET_OR_CLEAR(x, PCRE_UNGREEDY); 
-  } 
- 
-  bool utf8() const { 
-    return PCRE_IS_SET(PCRE_UTF8); 
-  } 
-  RE_Options &set_utf8(bool x) { 
-    PCRE_SET_OR_CLEAR(x, PCRE_UTF8); 
-  } 
- 
-  bool no_auto_capture() const { 
-    return PCRE_IS_SET(PCRE_NO_AUTO_CAPTURE); 
-  } 
-  RE_Options &set_no_auto_capture(bool x) { 
-    PCRE_SET_OR_CLEAR(x, PCRE_NO_AUTO_CAPTURE); 
-  } 
- 
-  RE_Options &set_all_options(int opt) { 
-    all_options_ = opt; 
-    return *this; 
-  } 
-  int all_options() const { 
-    return all_options_ ; 
-  } 
- 
-  // TODO: add other pcre flags 
- 
- private: 
-  int match_limit_; 
-  int match_limit_recursion_; 
-  int all_options_; 
-}; 
- 
-// These functions return some common RE_Options 
-static inline RE_Options UTF8() { 
-  return RE_Options().set_utf8(true); 
-} 
- 
-static inline RE_Options CASELESS() { 
-  return RE_Options().set_caseless(true); 
-} 
-static inline RE_Options MULTILINE() { 
-  return RE_Options().set_multiline(true); 
-} 
- 
-static inline RE_Options DOTALL() { 
-  return RE_Options().set_dotall(true); 
-} 
- 
-static inline RE_Options EXTENDED() { 
-  return RE_Options().set_extended(true); 
-} 
- 
-// Interface for regular expression matching.  Also corresponds to a 
-// pre-compiled regular expression.  An "RE" object is safe for 
-// concurrent use by multiple threads. 
-class PCRECPP_EXP_DEFN RE { 
- public: 
-  // We provide implicit conversions from strings so that users can 
-  // pass in a string or a "const char*" wherever an "RE" is expected. 
-  RE(const string& pat) { Init(pat, NULL); } 
-  RE(const string& pat, const RE_Options& option) { Init(pat, &option); } 
-  RE(const char* pat) { Init(pat, NULL); } 
-  RE(const char* pat, const RE_Options& option) { Init(pat, &option); } 
-  RE(const unsigned char* pat) { 
-    Init(reinterpret_cast<const char*>(pat), NULL); 
-  } 
-  RE(const unsigned char* pat, const RE_Options& option) { 
-    Init(reinterpret_cast<const char*>(pat), &option); 
-  } 
- 
-  // Copy constructor & assignment - note that these are expensive 
-  // because they recompile the expression. 
-  RE(const RE& re) { Init(re.pattern_, &re.options_); } 
-  const RE& operator=(const RE& re) { 
-    if (this != &re) { 
-      Cleanup(); 
- 
-      // This is the code that originally came from Google 
-      // Init(re.pattern_.c_str(), &re.options_); 
- 
-      // This is the replacement from Ari Pollak 
-      Init(re.pattern_, &re.options_); 
-    } 
-    return *this; 
-  } 
- 
- 
-  ~RE(); 
- 
-  // The string specification for this RE.  E.g. 
-  //   RE re("ab*c?d+"); 
-  //   re.pattern();    // "ab*c?d+" 
-  const string& pattern() const { return pattern_; } 
- 
-  // If RE could not be created properly, returns an error string. 
-  // Else returns the empty string. 
-  const string& error() const { return *error_; } 
- 
-  /***** The useful part: the matching interface *****/ 
- 
-  // This is provided so one can do pattern.ReplaceAll() just as 
-  // easily as ReplaceAll(pattern-text, ....) 
- 
-  bool FullMatch(const StringPiece& text, 
-                 const Arg& ptr1 = no_arg, 
-                 const Arg& ptr2 = no_arg, 
-                 const Arg& ptr3 = no_arg, 
-                 const Arg& ptr4 = no_arg, 
-                 const Arg& ptr5 = no_arg, 
-                 const Arg& ptr6 = no_arg, 
-                 const Arg& ptr7 = no_arg, 
-                 const Arg& ptr8 = no_arg, 
-                 const Arg& ptr9 = no_arg, 
-                 const Arg& ptr10 = no_arg, 
-                 const Arg& ptr11 = no_arg, 
-                 const Arg& ptr12 = no_arg, 
-                 const Arg& ptr13 = no_arg, 
-                 const Arg& ptr14 = no_arg, 
-                 const Arg& ptr15 = no_arg, 
-                 const Arg& ptr16 = no_arg) const; 
- 
-  bool PartialMatch(const StringPiece& text, 
-                    const Arg& ptr1 = no_arg, 
-                    const Arg& ptr2 = no_arg, 
-                    const Arg& ptr3 = no_arg, 
-                    const Arg& ptr4 = no_arg, 
-                    const Arg& ptr5 = no_arg, 
-                    const Arg& ptr6 = no_arg, 
-                    const Arg& ptr7 = no_arg, 
-                    const Arg& ptr8 = no_arg, 
-                    const Arg& ptr9 = no_arg, 
-                    const Arg& ptr10 = no_arg, 
-                    const Arg& ptr11 = no_arg, 
-                    const Arg& ptr12 = no_arg, 
-                    const Arg& ptr13 = no_arg, 
-                    const Arg& ptr14 = no_arg, 
-                    const Arg& ptr15 = no_arg, 
-                    const Arg& ptr16 = no_arg) const; 
- 
-  bool Consume(StringPiece* input, 
-               const Arg& ptr1 = no_arg, 
-               const Arg& ptr2 = no_arg, 
-               const Arg& ptr3 = no_arg, 
-               const Arg& ptr4 = no_arg, 
-               const Arg& ptr5 = no_arg, 
-               const Arg& ptr6 = no_arg, 
-               const Arg& ptr7 = no_arg, 
-               const Arg& ptr8 = no_arg, 
-               const Arg& ptr9 = no_arg, 
-               const Arg& ptr10 = no_arg, 
-               const Arg& ptr11 = no_arg, 
-               const Arg& ptr12 = no_arg, 
-               const Arg& ptr13 = no_arg, 
-               const Arg& ptr14 = no_arg, 
-               const Arg& ptr15 = no_arg, 
-               const Arg& ptr16 = no_arg) const; 
- 
-  bool FindAndConsume(StringPiece* input, 
-                      const Arg& ptr1 = no_arg, 
-                      const Arg& ptr2 = no_arg, 
-                      const Arg& ptr3 = no_arg, 
-                      const Arg& ptr4 = no_arg, 
-                      const Arg& ptr5 = no_arg, 
-                      const Arg& ptr6 = no_arg, 
-                      const Arg& ptr7 = no_arg, 
-                      const Arg& ptr8 = no_arg, 
-                      const Arg& ptr9 = no_arg, 
-                      const Arg& ptr10 = no_arg, 
-                      const Arg& ptr11 = no_arg, 
-                      const Arg& ptr12 = no_arg, 
-                      const Arg& ptr13 = no_arg, 
-                      const Arg& ptr14 = no_arg, 
-                      const Arg& ptr15 = no_arg, 
-                      const Arg& ptr16 = no_arg) const; 
- 
-  bool Replace(const StringPiece& rewrite, 
-               string *str) const; 
- 
-  int GlobalReplace(const StringPiece& rewrite, 
-                    string *str) const; 
- 
-  bool Extract(const StringPiece &rewrite, 
-               const StringPiece &text, 
-               string *out) const; 
- 
-  // Escapes all potentially meaningful regexp characters in 
-  // 'unquoted'.  The returned string, used as a regular expression, 
-  // will exactly match the original string.  For example, 
-  //           1.5-2.0? 
-  // may become: 
-  //           1\.5\-2\.0\? 
-  // Note QuoteMeta behaves the same as perl's QuoteMeta function, 
-  // *except* that it escapes the NUL character (\0) as backslash + 0, 
-  // rather than backslash + NUL. 
-  static string QuoteMeta(const StringPiece& unquoted); 
- 
- 
-  /***** Generic matching interface *****/ 
- 
-  // Type of match (TODO: Should be restructured as part of RE_Options) 
-  enum Anchor { 
-    UNANCHORED,         // No anchoring 
-    ANCHOR_START,       // Anchor at start only 
-    ANCHOR_BOTH         // Anchor at start and end 
-  }; 
- 
-  // General matching routine.  Stores the length of the match in 
-  // "*consumed" if successful. 
-  bool DoMatch(const StringPiece& text, 
-               Anchor anchor, 
-               int* consumed, 
-               const Arg* const* args, int n) const; 
- 
-  // Return the number of capturing subpatterns, or -1 if the 
-  // regexp wasn't valid on construction. 
-  int NumberOfCapturingGroups() const; 
- 
-  // The default value for an argument, to indicate the end of the argument 
-  // list. This must be used only in optional argument defaults. It should NOT 
-  // be passed explicitly. Some people have tried to use it like this: 
-  // 
-  //   FullMatch(x, y, &z, no_arg, &w); 
-  // 
-  // This is a mistake, and will not work. 
-  static Arg no_arg; 
- 
- private: 
- 
-  void Init(const string& pattern, const RE_Options* options); 
-  void Cleanup(); 
- 
-  // Match against "text", filling in "vec" (up to "vecsize" * 2/3) with 
-  // pairs of integers for the beginning and end positions of matched 
-  // text.  The first pair corresponds to the entire matched text; 
-  // subsequent pairs correspond, in order, to parentheses-captured 
-  // matches.  Returns the number of pairs (one more than the number of 
-  // the last subpattern with a match) if matching was successful 
-  // and zero if the match failed. 
-  // I.e. for RE("(foo)|(bar)|(baz)") it will return 2, 3, and 4 when matching 
-  // against "foo", "bar", and "baz" respectively. 
-  // When matching RE("(foo)|hello") against "hello", it will return 1. 
-  // But the values for all subpattern are filled in into "vec". 
-  int TryMatch(const StringPiece& text, 
-               int startpos, 
-               Anchor anchor, 
-               bool empty_ok, 
-               int *vec, 
-               int vecsize) const; 
- 
-  // Append the "rewrite" string, with backslash subsitutions from "text" 
-  // and "vec", to string "out". 
-  bool Rewrite(string *out, 
-               const StringPiece& rewrite, 
-               const StringPiece& text, 
-               int *vec, 
-               int veclen) const; 
- 
-  // internal implementation for DoMatch 
-  bool DoMatchImpl(const StringPiece& text, 
-                   Anchor anchor, 
-                   int* consumed, 
-                   const Arg* const args[], 
-                   int n, 
-                   int* vec, 
-                   int vecsize) const; 
- 
-  // Compile the regexp for the specified anchoring mode 
-  pcre* Compile(Anchor anchor); 
- 
-  string        pattern_; 
-  RE_Options    options_; 
-  pcre*         re_full_;       // For full matches 
-  pcre*         re_partial_;    // For partial matches 
-  const string* error_;         // Error indicator (or points to empty string) 
-}; 
- 
-}   // namespace pcrecpp 
- 
-#endif /* _PCRECPP_H */ 
+
+namespace pcrecpp {
+
+#define PCRE_SET_OR_CLEAR(b, o) \
+    if (b) all_options_ |= (o); else all_options_ &= ~(o); \
+    return *this
+
+#define PCRE_IS_SET(o)  \
+        (all_options_ & o) == o
+
+/***** Compiling regular expressions: the RE class *****/
+
+// RE_Options allow you to set options to be passed along to pcre,
+// along with other options we put on top of pcre.
+// Only 9 modifiers, plus match_limit and match_limit_recursion,
+// are supported now.
+class PCRECPP_EXP_DEFN RE_Options {
+ public:
+  // constructor
+  RE_Options() : match_limit_(0), match_limit_recursion_(0), all_options_(0) {}
+
+  // alternative constructor.
+  // To facilitate transfer of legacy code from C programs
+  //
+  // This lets you do
+  //    RE(pattern, RE_Options(PCRE_CASELESS|PCRE_MULTILINE)).PartialMatch(str);
+  // But new code is better off doing
+  //    RE(pattern,
+  //      RE_Options().set_caseless(true).set_multiline(true)).PartialMatch(str);
+  RE_Options(int option_flags) : match_limit_(0), match_limit_recursion_(0),
+                                 all_options_(option_flags) {}
+  // we're fine with the default destructor, copy constructor, etc.
+
+  // accessors and mutators
+  int match_limit() const { return match_limit_; };
+  RE_Options &set_match_limit(int limit) {
+    match_limit_ = limit;
+    return *this;
+  }
+
+  int match_limit_recursion() const { return match_limit_recursion_; };
+  RE_Options &set_match_limit_recursion(int limit) {
+    match_limit_recursion_ = limit;
+    return *this;
+  }
+
+  bool caseless() const {
+    return PCRE_IS_SET(PCRE_CASELESS);
+  }
+  RE_Options &set_caseless(bool x) {
+    PCRE_SET_OR_CLEAR(x, PCRE_CASELESS);
+  }
+
+  bool multiline() const {
+    return PCRE_IS_SET(PCRE_MULTILINE);
+  }
+  RE_Options &set_multiline(bool x) {
+    PCRE_SET_OR_CLEAR(x, PCRE_MULTILINE);
+  }
+
+  bool dotall() const {
+    return PCRE_IS_SET(PCRE_DOTALL);
+  }
+  RE_Options &set_dotall(bool x) {
+    PCRE_SET_OR_CLEAR(x, PCRE_DOTALL);
+  }
+
+  bool extended() const {
+    return PCRE_IS_SET(PCRE_EXTENDED);
+  }
+  RE_Options &set_extended(bool x) {
+    PCRE_SET_OR_CLEAR(x, PCRE_EXTENDED);
+  }
+
+  bool dollar_endonly() const {
+    return PCRE_IS_SET(PCRE_DOLLAR_ENDONLY);
+  }
+  RE_Options &set_dollar_endonly(bool x) {
+    PCRE_SET_OR_CLEAR(x, PCRE_DOLLAR_ENDONLY);
+  }
+
+  bool extra() const {
+    return PCRE_IS_SET(PCRE_EXTRA);
+  }
+  RE_Options &set_extra(bool x) {
+    PCRE_SET_OR_CLEAR(x, PCRE_EXTRA);
+  }
+
+  bool ungreedy() const {
+    return PCRE_IS_SET(PCRE_UNGREEDY);
+  }
+  RE_Options &set_ungreedy(bool x) {
+    PCRE_SET_OR_CLEAR(x, PCRE_UNGREEDY);
+  }
+
+  bool utf8() const {
+    return PCRE_IS_SET(PCRE_UTF8);
+  }
+  RE_Options &set_utf8(bool x) {
+    PCRE_SET_OR_CLEAR(x, PCRE_UTF8);
+  }
+
+  bool no_auto_capture() const {
+    return PCRE_IS_SET(PCRE_NO_AUTO_CAPTURE);
+  }
+  RE_Options &set_no_auto_capture(bool x) {
+    PCRE_SET_OR_CLEAR(x, PCRE_NO_AUTO_CAPTURE);
+  }
+
+  RE_Options &set_all_options(int opt) {
+    all_options_ = opt;
+    return *this;
+  }
+  int all_options() const {
+    return all_options_ ;
+  }
+
+  // TODO: add other pcre flags
+
+ private:
+  int match_limit_;
+  int match_limit_recursion_;
+  int all_options_;
+};
+
+// These functions return some common RE_Options
+static inline RE_Options UTF8() {
+  return RE_Options().set_utf8(true);
+}
+
+static inline RE_Options CASELESS() {
+  return RE_Options().set_caseless(true);
+}
+static inline RE_Options MULTILINE() {
+  return RE_Options().set_multiline(true);
+}
+
+static inline RE_Options DOTALL() {
+  return RE_Options().set_dotall(true);
+}
+
+static inline RE_Options EXTENDED() {
+  return RE_Options().set_extended(true);
+}
+
+// Interface for regular expression matching.  Also corresponds to a
+// pre-compiled regular expression.  An "RE" object is safe for
+// concurrent use by multiple threads.
+class PCRECPP_EXP_DEFN RE {
+ public:
+  // We provide implicit conversions from strings so that users can
+  // pass in a string or a "const char*" wherever an "RE" is expected.
+  RE(const string& pat) { Init(pat, NULL); }
+  RE(const string& pat, const RE_Options& option) { Init(pat, &option); }
+  RE(const char* pat) { Init(pat, NULL); }
+  RE(const char* pat, const RE_Options& option) { Init(pat, &option); }
+  RE(const unsigned char* pat) {
+    Init(reinterpret_cast<const char*>(pat), NULL);
+  }
+  RE(const unsigned char* pat, const RE_Options& option) {
+    Init(reinterpret_cast<const char*>(pat), &option);
+  }
+
+  // Copy constructor & assignment - note that these are expensive
+  // because they recompile the expression.
+  RE(const RE& re) { Init(re.pattern_, &re.options_); }
+  const RE& operator=(const RE& re) {
+    if (this != &re) {
+      Cleanup();
+
+      // This is the code that originally came from Google
+      // Init(re.pattern_.c_str(), &re.options_);
+
+      // This is the replacement from Ari Pollak
+      Init(re.pattern_, &re.options_);
+    }
+    return *this;
+  }
+
+
+  ~RE();
+
+  // The string specification for this RE.  E.g.
+  //   RE re("ab*c?d+");
+  //   re.pattern();    // "ab*c?d+"
+  const string& pattern() const { return pattern_; }
+
+  // If RE could not be created properly, returns an error string.
+  // Else returns the empty string.
+  const string& error() const { return *error_; }
+
+  /***** The useful part: the matching interface *****/
+
+  // This is provided so one can do pattern.ReplaceAll() just as
+  // easily as ReplaceAll(pattern-text, ....)
+
+  bool FullMatch(const StringPiece& text,
+                 const Arg& ptr1 = no_arg,
+                 const Arg& ptr2 = no_arg,
+                 const Arg& ptr3 = no_arg,
+                 const Arg& ptr4 = no_arg,
+                 const Arg& ptr5 = no_arg,
+                 const Arg& ptr6 = no_arg,
+                 const Arg& ptr7 = no_arg,
+                 const Arg& ptr8 = no_arg,
+                 const Arg& ptr9 = no_arg,
+                 const Arg& ptr10 = no_arg,
+                 const Arg& ptr11 = no_arg,
+                 const Arg& ptr12 = no_arg,
+                 const Arg& ptr13 = no_arg,
+                 const Arg& ptr14 = no_arg,
+                 const Arg& ptr15 = no_arg,
+                 const Arg& ptr16 = no_arg) const;
+
+  bool PartialMatch(const StringPiece& text,
+                    const Arg& ptr1 = no_arg,
+                    const Arg& ptr2 = no_arg,
+                    const Arg& ptr3 = no_arg,
+                    const Arg& ptr4 = no_arg,
+                    const Arg& ptr5 = no_arg,
+                    const Arg& ptr6 = no_arg,
+                    const Arg& ptr7 = no_arg,
+                    const Arg& ptr8 = no_arg,
+                    const Arg& ptr9 = no_arg,
+                    const Arg& ptr10 = no_arg,
+                    const Arg& ptr11 = no_arg,
+                    const Arg& ptr12 = no_arg,
+                    const Arg& ptr13 = no_arg,
+                    const Arg& ptr14 = no_arg,
+                    const Arg& ptr15 = no_arg,
+                    const Arg& ptr16 = no_arg) const;
+
+  bool Consume(StringPiece* input,
+               const Arg& ptr1 = no_arg,
+               const Arg& ptr2 = no_arg,
+               const Arg& ptr3 = no_arg,
+               const Arg& ptr4 = no_arg,
+               const Arg& ptr5 = no_arg,
+               const Arg& ptr6 = no_arg,
+               const Arg& ptr7 = no_arg,
+               const Arg& ptr8 = no_arg,
+               const Arg& ptr9 = no_arg,
+               const Arg& ptr10 = no_arg,
+               const Arg& ptr11 = no_arg,
+               const Arg& ptr12 = no_arg,
+               const Arg& ptr13 = no_arg,
+               const Arg& ptr14 = no_arg,
+               const Arg& ptr15 = no_arg,
+               const Arg& ptr16 = no_arg) const;
+
+  bool FindAndConsume(StringPiece* input,
+                      const Arg& ptr1 = no_arg,
+                      const Arg& ptr2 = no_arg,
+                      const Arg& ptr3 = no_arg,
+                      const Arg& ptr4 = no_arg,
+                      const Arg& ptr5 = no_arg,
+                      const Arg& ptr6 = no_arg,
+                      const Arg& ptr7 = no_arg,
+                      const Arg& ptr8 = no_arg,
+                      const Arg& ptr9 = no_arg,
+                      const Arg& ptr10 = no_arg,
+                      const Arg& ptr11 = no_arg,
+                      const Arg& ptr12 = no_arg,
+                      const Arg& ptr13 = no_arg,
+                      const Arg& ptr14 = no_arg,
+                      const Arg& ptr15 = no_arg,
+                      const Arg& ptr16 = no_arg) const;
+
+  bool Replace(const StringPiece& rewrite,
+               string *str) const;
+
+  int GlobalReplace(const StringPiece& rewrite,
+                    string *str) const;
+
+  bool Extract(const StringPiece &rewrite,
+               const StringPiece &text,
+               string *out) const;
+
+  // Escapes all potentially meaningful regexp characters in
+  // 'unquoted'.  The returned string, used as a regular expression,
+  // will exactly match the original string.  For example,
+  //           1.5-2.0?
+  // may become:
+  //           1\.5\-2\.0\?
+  // Note QuoteMeta behaves the same as perl's QuoteMeta function,
+  // *except* that it escapes the NUL character (\0) as backslash + 0,
+  // rather than backslash + NUL.
+  static string QuoteMeta(const StringPiece& unquoted);
+
+
+  /***** Generic matching interface *****/
+
+  // Type of match (TODO: Should be restructured as part of RE_Options)
+  enum Anchor {
+    UNANCHORED,         // No anchoring
+    ANCHOR_START,       // Anchor at start only
+    ANCHOR_BOTH         // Anchor at start and end
+  };
+
+  // General matching routine.  Stores the length of the match in
+  // "*consumed" if successful.
+  bool DoMatch(const StringPiece& text,
+               Anchor anchor,
+               int* consumed,
+               const Arg* const* args, int n) const;
+
+  // Return the number of capturing subpatterns, or -1 if the
+  // regexp wasn't valid on construction.
+  int NumberOfCapturingGroups() const;
+
+  // The default value for an argument, to indicate the end of the argument
+  // list. This must be used only in optional argument defaults. It should NOT
+  // be passed explicitly. Some people have tried to use it like this:
+  //
+  //   FullMatch(x, y, &z, no_arg, &w);
+  //
+  // This is a mistake, and will not work.
+  static Arg no_arg;
+
+ private:
+
+  void Init(const string& pattern, const RE_Options* options);
+  void Cleanup();
+
+  // Match against "text", filling in "vec" (up to "vecsize" * 2/3) with
+  // pairs of integers for the beginning and end positions of matched
+  // text.  The first pair corresponds to the entire matched text;
+  // subsequent pairs correspond, in order, to parentheses-captured
+  // matches.  Returns the number of pairs (one more than the number of
+  // the last subpattern with a match) if matching was successful
+  // and zero if the match failed.
+  // I.e. for RE("(foo)|(bar)|(baz)") it will return 2, 3, and 4 when matching
+  // against "foo", "bar", and "baz" respectively.
+  // When matching RE("(foo)|hello") against "hello", it will return 1.
+  // But the values for all subpattern are filled in into "vec".
+  int TryMatch(const StringPiece& text,
+               int startpos,
+               Anchor anchor,
+               bool empty_ok,
+               int *vec,
+               int vecsize) const;
+
+  // Append the "rewrite" string, with backslash subsitutions from "text"
+  // and "vec", to string "out".
+  bool Rewrite(string *out,
+               const StringPiece& rewrite,
+               const StringPiece& text,
+               int *vec,
+               int veclen) const;
+
+  // internal implementation for DoMatch
+  bool DoMatchImpl(const StringPiece& text,
+                   Anchor anchor,
+                   int* consumed,
+                   const Arg* const args[],
+                   int n,
+                   int* vec,
+                   int vecsize) const;
+
+  // Compile the regexp for the specified anchoring mode
+  pcre* Compile(Anchor anchor);
+
+  string        pattern_;
+  RE_Options    options_;
+  pcre*         re_full_;       // For full matches
+  pcre*         re_partial_;    // For partial matches
+  const string* error_;         // Error indicator (or points to empty string)
+};
+
+}   // namespace pcrecpp
+
+#endif /* _PCRECPP_H */