String.hpp

   1 /* Cycript - Inlining/Optimizing JavaScript Compiler
   2  * Copyright (C) 2009  Jay Freeman (saurik)
   3 */
   4
   5 /* Modified BSD License {{{ */
   6 /*
   7  *        Redistribution and use in source and binary
   8  * forms, with or without modification, are permitted
   9  * provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the
  12  *    above copyright notice, this list of conditions
  13  *    and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the
  15  *    above copyright notice, this list of conditions
  16  *    and the following disclaimer in the documentation
  17  *    and/or other materials provided with the
  18  *    distribution.
  19  * 3. The name of the author may not be used to endorse
  20  *    or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  25  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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  33  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  34  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  35  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  36  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /* }}} */
  39
  40 #ifndef CYCRIPT_STRING_HPP
  41 #define CYCRIPT_STRING_HPP
  42
  43 #include "cycript.hpp"
  44
  45 struct CYUTF8String {
  46     const char *data;
  47     size_t size;
  48
  49     CYUTF8String(const char *data, size_t size) :
  50         data(data),
  51         size(size)
  52     {
  53     }
  54
  55     bool operator ==(const char *value) const {
  56         size_t length(strlen(data));
  57         return length == size && memcmp(value, data, length) == 0;
  58     }
  59 };
  60
  61 struct CYUTF16String {
  62     const uint16_t *data;
  63     size_t size;
  64
  65     CYUTF16String(const uint16_t *data, size_t size) :
  66         data(data),
  67         size(size)
  68     {
  69     }
  70 };
  71
  72 JSStringRef CYCopyJSString(const char *value);
  73 JSStringRef CYCopyJSString(JSStringRef value);
  74 JSStringRef CYCopyJSString(CYUTF8String value);
  75 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value);
  76
  77 class CYJSString {
  78   private:
  79     JSStringRef string_;
  80
  81     void Clear_() {
  82         if (string_ != NULL)
  83             JSStringRelease(string_);
  84     }
  85
  86   public:
  87     CYJSString(const CYJSString &rhs) :
  88         string_(CYCopyJSString(rhs.string_))
  89     {
  90     }
  91
  92     template <typename Arg0_>
  93     CYJSString(Arg0_ arg0) :
  94         string_(CYCopyJSString(arg0))
  95     {
  96     }
  97
  98     template <typename Arg0_, typename Arg1_>
  99     CYJSString(Arg0_ arg0, Arg1_ arg1) :
 100         string_(CYCopyJSString(arg0, arg1))
 101     {
 102     }
 103
 104     CYJSString &operator =(const CYJSString &rhs) {
 105         Clear_();
 106         string_ = CYCopyJSString(rhs.string_);
 107         return *this;
 108     }
 109
 110     ~CYJSString() {
 111         Clear_();
 112     }
 113
 114     void Clear() {
 115         Clear_();
 116         string_ = NULL;
 117     }
 118
 119     operator JSStringRef() const {
 120         return string_;
 121     }
 122 };
 123
 124 size_t CYGetIndex(const CYUTF8String &value);
 125 bool CYIsKey(CYUTF8String value);
 126 bool CYGetOffset(const char *value, ssize_t &index);
 127
 128 const char *CYPoolCString(apr_pool_t *pool, JSContextRef context, JSValueRef value);
 129
 130 #endif/*CYCRIPT_STRING_HPP*/