// Copyright (c) 2005, Google Inc.

[0] Fix | Delete

// All rights reserved.

[1] Fix | Delete

//

[2] Fix | Delete

// Redistribution and use in source and binary forms, with or without

[3] Fix | Delete

// modification, are permitted provided that the following conditions are

[4] Fix | Delete

// met:

[5] Fix | Delete

//

[6] Fix | Delete

// * Redistributions of source code must retain the above copyright

[7] Fix | Delete

// notice, this list of conditions and the following disclaimer.

[8] Fix | Delete

// * Redistributions in binary form must reproduce the above

[9] Fix | Delete

// copyright notice, this list of conditions and the following disclaimer

[10] Fix | Delete

// in the documentation and/or other materials provided with the

[11] Fix | Delete

// distribution.

[12] Fix | Delete

// * Neither the name of Google Inc. nor the names of its

[13] Fix | Delete

// contributors may be used to endorse or promote products derived from

[14] Fix | Delete

// this software without specific prior written permission.

[15] Fix | Delete

//

[16] Fix | Delete

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

[17] Fix | Delete

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

[18] Fix | Delete

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

[19] Fix | Delete

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

[20] Fix | Delete

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

[21] Fix | Delete

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

[22] Fix | Delete

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

[23] Fix | Delete

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

[24] Fix | Delete

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

[25] Fix | Delete

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

[26] Fix | Delete

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

[27] Fix | Delete

//

[28] Fix | Delete

// Author: Sanjay Ghemawat

[29] Fix | Delete

//

[30] Fix | Delete

// A string like object that points into another piece of memory.

[31] Fix | Delete

// Useful for providing an interface that allows clients to easily

[32] Fix | Delete

// pass in either a "const char*" or a "string".

[33] Fix | Delete

//

[34] Fix | Delete

// Arghh! I wish C++ literals were automatically of type "string".

[35] Fix | Delete

[36] Fix | Delete

#ifndef _PCRE_STRINGPIECE_H

[37] Fix | Delete

#define _PCRE_STRINGPIECE_H

[38] Fix | Delete

[39] Fix | Delete

#include <cstring>

[40] Fix | Delete

#include <string>

[41] Fix | Delete

#include <iosfwd> // for ostream forward-declaration

[42] Fix | Delete

[43] Fix | Delete

#if 0

[44] Fix | Delete

#define HAVE_TYPE_TRAITS

[45] Fix | Delete

#include <type_traits.h>

[46] Fix | Delete

#elif 0

[47] Fix | Delete

#define HAVE_TYPE_TRAITS

[48] Fix | Delete

#include <bits/type_traits.h>

[49] Fix | Delete

#endif

[50] Fix | Delete

[51] Fix | Delete

#include <pcre.h>

[52] Fix | Delete

[53] Fix | Delete

namespace pcrecpp {

[54] Fix | Delete

[55] Fix | Delete

using std::memcmp;

[56] Fix | Delete

using std::strlen;

[57] Fix | Delete

using std::string;

[58] Fix | Delete

[59] Fix | Delete

class PCRECPP_EXP_DEFN StringPiece {

[60] Fix | Delete

private:

[61] Fix | Delete

const char* ptr_;

[62] Fix | Delete

int length_;

[63] Fix | Delete

[64] Fix | Delete

public:

[65] Fix | Delete

// We provide non-explicit singleton constructors so users can pass

[66] Fix | Delete

// in a "const char*" or a "string" wherever a "StringPiece" is

[67] Fix | Delete

// expected.

[68] Fix | Delete

StringPiece()

[69] Fix | Delete

: ptr_(NULL), length_(0) { }

[70] Fix | Delete

StringPiece(const char* str)

[71] Fix | Delete

: ptr_(str), length_(static_cast<int>(strlen(ptr_))) { }

[72] Fix | Delete

StringPiece(const unsigned char* str)

[73] Fix | Delete

: ptr_(reinterpret_cast<const char*>(str)),

[74] Fix | Delete

length_(static_cast<int>(strlen(ptr_))) { }

[75] Fix | Delete

StringPiece(const string& str)

[76] Fix | Delete

: ptr_(str.data()), length_(static_cast<int>(str.size())) { }

[77] Fix | Delete

StringPiece(const char* offset, int len)

[78] Fix | Delete

: ptr_(offset), length_(len) { }

[79] Fix | Delete

[80] Fix | Delete

// data() may return a pointer to a buffer with embedded NULs, and the

[81] Fix | Delete

// returned buffer may or may not be null terminated. Therefore it is

[82] Fix | Delete

// typically a mistake to pass data() to a routine that expects a NUL

[83] Fix | Delete

// terminated string. Use "as_string().c_str()" if you really need to do

[84] Fix | Delete

// this. Or better yet, change your routine so it does not rely on NUL

[85] Fix | Delete

// termination.

[86] Fix | Delete

const char* data() const { return ptr_; }

[87] Fix | Delete

int size() const { return length_; }

[88] Fix | Delete

bool empty() const { return length_ == 0; }

[89] Fix | Delete

[90] Fix | Delete

void clear() { ptr_ = NULL; length_ = 0; }

[91] Fix | Delete

void set(const char* buffer, int len) { ptr_ = buffer; length_ = len; }

[92] Fix | Delete

void set(const char* str) {

[93] Fix | Delete

ptr_ = str;

[94] Fix | Delete

length_ = static_cast<int>(strlen(str));

[95] Fix | Delete

}

[96] Fix | Delete

void set(const void* buffer, int len) {

[97] Fix | Delete

ptr_ = reinterpret_cast<const char*>(buffer);

[98] Fix | Delete

length_ = len;

[99] Fix | Delete

}

[100] Fix | Delete

[101] Fix | Delete

char operator[](int i) const { return ptr_[i]; }

[102] Fix | Delete

[103] Fix | Delete

void remove_prefix(int n) {

[104] Fix | Delete

ptr_ += n;

[105] Fix | Delete

length_ -= n;

[106] Fix | Delete

}

[107] Fix | Delete

[108] Fix | Delete

void remove_suffix(int n) {

[109] Fix | Delete

length_ -= n;

[110] Fix | Delete

}

[111] Fix | Delete

[112] Fix | Delete

bool operator==(const StringPiece& x) const {

[113] Fix | Delete

return ((length_ == x.length_) &&

[114] Fix | Delete

(memcmp(ptr_, x.ptr_, length_) == 0));

[115] Fix | Delete

}

[116] Fix | Delete

bool operator!=(const StringPiece& x) const {

[117] Fix | Delete

return !(*this == x);

[118] Fix | Delete

}

[119] Fix | Delete

[120] Fix | Delete

#define STRINGPIECE_BINARY_PREDICATE(cmp,auxcmp) \

[121] Fix | Delete

bool operator cmp (const StringPiece& x) const { \

[122] Fix | Delete

int r = memcmp(ptr_, x.ptr_, length_ < x.length_ ? length_ : x.length_); \

[123] Fix | Delete

return ((r auxcmp 0) || ((r == 0) && (length_ cmp x.length_))); \

[124] Fix | Delete

}

[125] Fix | Delete

STRINGPIECE_BINARY_PREDICATE(<, <);

[126] Fix | Delete

STRINGPIECE_BINARY_PREDICATE(<=, <);

[127] Fix | Delete

STRINGPIECE_BINARY_PREDICATE(>=, >);

[128] Fix | Delete

STRINGPIECE_BINARY_PREDICATE(>, >);

[129] Fix | Delete

#undef STRINGPIECE_BINARY_PREDICATE

[130] Fix | Delete

[131] Fix | Delete

int compare(const StringPiece& x) const {

[132] Fix | Delete

int r = memcmp(ptr_, x.ptr_, length_ < x.length_ ? length_ : x.length_);

[133] Fix | Delete

if (r == 0) {

[134] Fix | Delete

if (length_ < x.length_) r = -1;

[135] Fix | Delete

else if (length_ > x.length_) r = +1;

[136] Fix | Delete

}

[137] Fix | Delete

return r;

[138] Fix | Delete

}

[139] Fix | Delete

[140] Fix | Delete

string as_string() const {

[141] Fix | Delete

return string(data(), size());

[142] Fix | Delete

}

[143] Fix | Delete

[144] Fix | Delete

void CopyToString(string* target) const {

[145] Fix | Delete

target->assign(ptr_, length_);

[146] Fix | Delete

}

[147] Fix | Delete

[148] Fix | Delete

// Does "this" start with "x"

[149] Fix | Delete

bool starts_with(const StringPiece& x) const {

[150] Fix | Delete

return ((length_ >= x.length_) && (memcmp(ptr_, x.ptr_, x.length_) == 0));

[151] Fix | Delete

}

[152] Fix | Delete

};

[153] Fix | Delete

[154] Fix | Delete

} // namespace pcrecpp

[155] Fix | Delete

[156] Fix | Delete

// ------------------------------------------------------------------

[157] Fix | Delete

// Functions used to create STL containers that use StringPiece

[158] Fix | Delete

// Remember that a StringPiece's lifetime had better be less than

[159] Fix | Delete

// that of the underlying string or char*. If it is not, then you

[160] Fix | Delete

// cannot safely store a StringPiece into an STL container

[161] Fix | Delete

// ------------------------------------------------------------------

[162] Fix | Delete

[163] Fix | Delete

#ifdef HAVE_TYPE_TRAITS

[164] Fix | Delete

// This makes vector<StringPiece> really fast for some STL implementations

[165] Fix | Delete

template<> struct __type_traits<pcrecpp::StringPiece> {

[166] Fix | Delete

typedef __true_type has_trivial_default_constructor;

[167] Fix | Delete

typedef __true_type has_trivial_copy_constructor;

[168] Fix | Delete

typedef __true_type has_trivial_assignment_operator;

[169] Fix | Delete

typedef __true_type has_trivial_destructor;

[170] Fix | Delete

typedef __true_type is_POD_type;

[171] Fix | Delete

};

[172] Fix | Delete

#endif

[173] Fix | Delete

[174] Fix | Delete

// allow StringPiece to be logged

[175] Fix | Delete

PCRECPP_EXP_DECL std::ostream& operator<<(std::ostream& o,

[176] Fix | Delete

const pcrecpp::StringPiece& piece);

[177] Fix | Delete

[178] Fix | Delete

#endif /* _PCRE_STRINGPIECE_H */

[179] Fix | Delete

[180] Fix | Delete