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comparison: widget/xpwidgets/nsPrimitiveHelpers.h
widget/xpwidgets/nsPrimitiveHelpers.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef nsPrimitiveHelpers_h___ | |
| 8 #define nsPrimitiveHelpers_h___ | |
| 9 | |
| 10 #include "nsError.h" | |
| 11 #include "nscore.h" | |
| 12 | |
| 13 class nsISupports; | |
| 14 | |
| 15 | |
| 16 class nsPrimitiveHelpers | |
| 17 { | |
| 18 public: | |
| 19 | |
| 20 // Given some data and the flavor it corresponds to, creates the appropriate | |
| 21 // nsISupports* wrapper for passing across IDL boundaries. The length parameter | |
| 22 // should not include the null if the data is null terminated. | |
| 23 static void CreatePrimitiveForData ( const char* aFlavor, const void* aDataBuff, | |
| 24 uint32_t aDataLen, nsISupports** aPrimitive ) ; | |
| 25 | |
| 26 // Given a nsISupports* primitive and the flavor it represents, creates a new data | |
| 27 // buffer with the data in it. This data will be null terminated, but the length | |
| 28 // parameter does not reflect that. | |
| 29 static void CreateDataFromPrimitive ( const char* aFlavor, nsISupports* aPrimitive, | |
| 30 void** aDataBuff, uint32_t aDataLen ) ; | |
| 31 | |
| 32 // Given a unicode buffer (flavor text/unicode), this converts it to plain text using | |
| 33 // the appropriate platform charset encoding. |inUnicodeLen| is the length of the input | |
| 34 // string, not the # of bytes in the buffer. |outPlainTextData| is null terminated, | |
| 35 // but its length parameter, |outPlainTextLen|, does not reflect that. | |
| 36 static nsresult ConvertUnicodeToPlatformPlainText ( char16_t* inUnicode, int32_t inUnicodeLen, | |
| 37 char** outPlainTextData, int32_t* outPlainTextLen ) ; | |
| 38 | |
| 39 // Given a char buffer (flavor text/plaikn), this converts it to unicode using | |
| 40 // the appropriate platform charset encoding. |outUnicode| is null terminated, | |
| 41 // but its length parameter, |outUnicodeLen|, does not reflect that. |outUnicodeLen| is | |
| 42 // the length of the string in characters, not bytes. | |
| 43 static nsresult ConvertPlatformPlainTextToUnicode ( const char* inText, int32_t inTextLen, | |
| 44 char16_t** outUnicode, int32_t* outUnicodeLen ) ; | |
| 45 | |
| 46 }; // class nsPrimitiveHelpers | |
| 47 | |
| 48 | |
| 49 | |
| 50 class nsLinebreakHelpers | |
| 51 { | |
| 52 public: | |
| 53 | |
| 54 // Given some data, convert from the platform linebreaks into the LF expected by the | |
| 55 // DOM. This will attempt to convert the data in place, but the buffer may still need to | |
| 56 // be reallocated regardless (disposing the old buffer is taken care of internally, see | |
| 57 // the note below). | |
| 58 // | |
| 59 // NOTE: this assumes that it can use nsMemory to dispose of the old buffer. | |
| 60 static nsresult ConvertPlatformToDOMLinebreaks ( const char* inFlavor, void** ioData, int32_t* ioLengthInBytes ) ; | |
| 61 | |
| 62 }; // class nsLinebreakHelpers | |
| 63 | |
| 64 | |
| 65 #endif // nsPrimitiveHelpers_h___ |
