1 /*

     2  * Copyright (C) 2009 Apple Inc. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  * 1. Redistributions of source code must retain the above copyright

     8  *    notice, this list of conditions and the following disclaimer.

     9  * 2. Redistributions in binary form must reproduce the above copyright

    10  *    notice, this list of conditions and the following disclaimer in the

    11  *    documentation and/or other materials provided with the distribution.

    12  *

    13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

    14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR

    17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

    21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

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

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

    24  */

    25 

    26 #ifndef StringBuilder_h

    27 #define StringBuilder_h

    28 

    29 #include <wtf/Vector.h>

    30 

    31 namespace JSC {

    32 

    33 class StringBuilder {

    34 public:

    35     void append(const UChar u)

    36     {

    37         buffer.append(u);

    38     }

    39 

    40     void append(const char* str)

    41     {

    42         append(str, strlen(str));

    43     }

    44 

    45     void append(const char* str, size_t len)

    46     {

    47         buffer.reserveCapacity(buffer.size() + len);

    48         for (size_t i = 0; i < len; i++)

    49             buffer.append(static_cast<unsigned char>(str[i]));

    50     }

    51 

    52     void append(const UChar* str, size_t len)

    53     {

    54         buffer.append(str, len);

    55     }

    56 

    57     void append(const UString& str)

    58     {

    59         buffer.append(str.data(), str.size());

    60     }

    61 

    62     bool isEmpty() { return buffer.isEmpty(); }

    63     void reserveCapacity(size_t newCapacity) { buffer.reserveCapacity(newCapacity); }

    64     void resize(size_t size) { buffer.resize(size); }

    65     size_t size() const { return buffer.size(); }

    66 

    67     UChar operator[](size_t i) const { return buffer.at(i); }

    68 

    69     UString build()

    70     {

    71         buffer.shrinkToFit();

    72         ASSERT(buffer.data() || !buffer.size());

    73         return UString::adopt(buffer);

    74     }

    75 

    76 protected:

    77     Vector<UChar, 64> buffer;

    78 };

    79 

    80 }

    81 

    82 #endif