69 lines
1.7 KiB
C++
Executable File
69 lines
1.7 KiB
C++
Executable File
#include "precompiled.h"
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#include "StringConvert.h"
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#include <assert.h>
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#include <jsapi.h>
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// Make JS debugging a little easier by automatically naming GC roots
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#ifndef NDEBUG
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// Don't simply #define NAME_ALL_GC_ROOTS, because jsapi.h is horridly broken
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# define JS_AddRoot(cx, rp) JS_AddNamedRoot((cx), (rp), __FILE__)
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#endif
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#if SDL_BYTE_ORDER == SDL_BIG_ENDIAN
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#define ucs2le_to_wchart(ptr) (wchar_t)( (u16) ((u8*)ptr)[0] | (u16) ( ((u8*)ptr)[1] << 8) )
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#else
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#define ucs2le_to_wchart(ptr) (wchar_t)(*ptr);
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#endif
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JSString* StringConvert::wstring_to_jsstring(JSContext* cx, const std::wstring& str)
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{
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size_t len = str.length();
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jschar* data = (jschar*)JS_malloc(cx, len*sizeof(jschar));
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if (!data)
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return NULL;
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for (size_t i=0; i<len; ++i)
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data[i] = str[i];
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return JS_NewUCString(cx, data, len);
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}
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JSString* StringConvert::wchars_to_jsstring(JSContext* cx, const wchar_t* chars)
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{
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size_t len = wcslen(chars);
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if( !len )
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return( JSVAL_TO_STRING( JS_GetEmptyStringValue( cx ) ) );
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jschar* data = (jschar*)JS_malloc(cx, len*sizeof(jschar));
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if (!data)
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return NULL;
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for (size_t i=0; i<len; ++i)
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data[i] = chars[i];
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return JS_NewUCString(cx, data, len);
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}
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void StringConvert::jsstring_to_wstring(JSString* str, std::wstring& result)
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{
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jschars_to_wstring(JS_GetStringChars(str), JS_GetStringLength(str), result);
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}
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void StringConvert::jschars_to_wstring(const jschar* chars, size_t len, std::wstring& result)
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{
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assert(result.empty());
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result.reserve(len);
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for (size_t i = 0; i < len; ++i)
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result += chars[i];
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}
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void StringConvert::ucs2le_to_wstring(const char* start, const char* end, std::wstring& result)
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{
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assert(result.empty());
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result.reserve(end-start);
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for (const char* pos = start; pos < end; pos += 2)
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result += ucs2le_to_wchart(pos);
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}
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