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129 lines
3.8 KiB
129 lines
3.8 KiB
5 years ago
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/*
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File: HITextUtils.h
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Contains: Text utilities provided by HIToolbox.
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Version: QuickTime 7.3
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Copyright: (c) 2007 (c)2002 by Apple Computer, Inc., all rights reserved.
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Bugs?: For bug reports, consult the following page on
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the World Wide Web:
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http://developer.apple.com/bugreporter/
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*/
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#ifndef __HITEXTUTILS__
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#define __HITEXTUTILS__
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#ifndef __MACTYPES__
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#include <MacTypes.h>
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#endif
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#ifndef __COREFOUNDATION__
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#include <CoreFoundation.h>
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#endif
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#ifndef __TEXTCOMMON__
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#include <TextCommon.h>
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#endif
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#if PRAGMA_ONCE
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#pragma once
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if PRAGMA_IMPORT
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#pragma import on
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#endif
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/*
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* GetTextAndEncodingFromCFString()
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*
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* Summary:
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* Converts the contents of a CFString to the one- or two-byte
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* encoding that most accurately represents the original Unicode
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* characters in the string.
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*
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* Discussion:
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* Because the Macintosh toolbox has had, until Carbon, little
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* support for Unicode, you may often find that your applications
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* need to translate a CFString (containing Unicode characters) back
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* to a one- or two-byte encoding of the string in order to draw,
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* measure, or otherwise use the text in the string.
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* GetTextAndEncodingFromCFString is a utility that may be helpful
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* to do this, in some circumstances. The Carbon toolbox uses this
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* API itself when translating CFStrings to Pascal strings.
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* GetTextAndEncodingFromCFString attempts to convert the Unicode
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* characters in the string to the closest non-Unicode
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* representation of the string. For example, a string containing
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* only Unicode characters that are present in the MacRoman one-byte
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* encoding will be translated to MacRoman, and
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* kTextEncodingMacRoman will be returned as the encoding of the
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* text. A string containing Unicode characters that are present in
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* the MacJapanese two-byte encoding will be translated to
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* MacJapanese (Shift-JIS), and kTextEncodingMacJapanese will be
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* returned as the encoding of the text.
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* GetTextAndEncodingFromCFString is designed to be used for simple
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* strings which contain only text from a single language. It is not
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* designed to translate strings with multiple runs of text from
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* different languages, and will only return the first run of such a
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* string; for example, if you pass it a string containing a run of
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* Roman characters followed by a run of Japanese characters, it
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* will only return the Roman characters in the output buffer. For
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* more complex text translation, you should call the Unicode
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* converter directly (see ConvertFromUnicodeToTextRun, which
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* GetTextAndEncodingFromCFString uses internally).
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*
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* Parameters:
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*
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* inString:
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* The string to convert.
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*
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* outText:
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* The output buffer in which to place the converted text.
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*
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* inTextMaxLength:
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* The length in bytes of the input buffer.
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*
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* outTextLength:
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* On exit, contains the length in bytes of the text that was
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* placed into the output buffer.
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*
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* outEncoding:
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* On exit, contains the encoding of the text that was placed into
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* the output buffer.
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*
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* Availability:
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* Non-Carbon CFM: not available
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* CarbonLib: in CarbonLib 1.2.5 and later
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* Mac OS X: in version 10.0 and later
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*/
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EXTERN_API( OSStatus )
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GetTextAndEncodingFromCFString(
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CFStringRef inString,
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BytePtr outText,
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ByteCount inTextMaxLength,
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ByteCount * outTextLength,
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TextEncoding * outEncoding); /* can be NULL */
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#ifdef PRAGMA_IMPORT_OFF
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#pragma import off
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#elif PRAGMA_IMPORT
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#pragma import reset
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* __HITEXTUTILS__ */
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