95 lines
3.5 KiB
C
95 lines
3.5 KiB
C
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#ifndef _SVC_STRINGCONVERTER_H
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#define _SVC_STRINGCONVERTER_H
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#include <bfc/dispatch.h>
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#include <api/service/services.h>
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#include <api/service/svcs/svc_stringtypes.h>
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// Porting Rule: A new service to respond to at least OSNATIVE and UTF16 shall be
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// provided for every new platform. This service should provide transcoding
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// to and from the platform's native internationalized string encoding format
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// (ie: MBCS under Win9x, WorldScript on the Mac, etc etc etc).and to and from
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// UTF16. If the OSNATIVE string _IS_ UTF16, just respond that you can convert
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// both.
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class NOVTABLE svc_stringConverter : public Dispatchable {
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public:
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static FOURCC getServiceType() { return WaSvc::STRINGCONVERTER; }
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// test the type.
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int canConvert(FOURCC encoding_type);
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// The return code is the number of bytes written to the output buffer, or the error.
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// A return code of 0 is not an error, other than you passing NULL or a size 0 buffer won't do much interesting.
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int convertToUTF8(FOURCC encoding_type, const void *in_buffer, int size_in_bytes, char *out_buffer, int size_out_bytes);
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int preflightToUTF8(FOURCC encoding_type, const void *in_buffer, int size_in_bytes);
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int convertFromUTF8(FOURCC encoding_type, const char *in_buffer, int size_in_bytes, void *out_buffer, int size_out_bytes);
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int preflightFromUTF8(FOURCC encoding_type, const char *in_buffer, int size_in_bytes);
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protected:
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enum {
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CANCONVERT,
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CONVERTTOUTF8,
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PREFLIGHTTOUTF8,
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CONVERTFROMUTF8,
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PREFLIGHTFROMUTF8
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};
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};
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inline
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int svc_stringConverter::canConvert(FOURCC encoding_type) {
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return _call(CANCONVERT, (int)0, encoding_type);
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}
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inline
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int svc_stringConverter::convertToUTF8(FOURCC encoding_type, const void *in_buffer, int size_in_bytes, char *out_buffer, int size_out_bytes) {
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return _call(CONVERTTOUTF8, (int)0, encoding_type, in_buffer, size_in_bytes, out_buffer, size_out_bytes);
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}
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inline
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int svc_stringConverter::preflightToUTF8(FOURCC encoding_type, const void *in_buffer, int size_in_bytes) {
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return _call(PREFLIGHTTOUTF8, (int)0, encoding_type, in_buffer, size_in_bytes);
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}
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inline
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int svc_stringConverter::convertFromUTF8(FOURCC encoding_type, const char *in_buffer, int size_in_bytes, void *out_buffer, int size_out_bytes) {
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return _call(CONVERTFROMUTF8, (int)0, encoding_type, in_buffer, size_in_bytes, out_buffer, size_out_bytes);
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}
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inline
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int svc_stringConverter::preflightFromUTF8(FOURCC encoding_type, const char *in_buffer, int size_in_bytes) {
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return _call(PREFLIGHTFROMUTF8, (int)0, encoding_type, in_buffer, size_in_bytes);
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}
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// implementor derives from this one
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class NOVTABLE svc_stringConverterI : public svc_stringConverter {
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public:
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// test the type
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virtual int canConvert(FOURCC encoding_type) = 0;
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virtual int convertToUTF8(FOURCC encoding_type, const void *in_buffer, int size_in_bytes, char *out_buffer, int size_out_bytes) = 0;
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virtual int preflightToUTF8(FOURCC encoding_type, const void *in_buffer, int size_in_bytes) = 0;
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virtual int convertFromUTF8(FOURCC encoding_type, const char *in_buffer, int size_in_bytes, void *out_buffer, int size_out_bytes) = 0;
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virtual int preflightFromUTF8(FOURCC encoding_type, const char *in_buffer, int size_in_bytes) = 0;
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protected:
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RECVS_DISPATCH;
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};
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#include <api/service/svc_enum.h>
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class StringConverterEnum : public SvcEnumT<svc_stringConverter> {
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public:
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StringConverterEnum(FOURCC enc_type) : encoding_type(enc_type) {}
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protected:
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virtual int testService(svc_stringConverter *svc) {
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return (svc->canConvert(encoding_type));
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}
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private:
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FOURCC encoding_type;
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};
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#endif // _SVC_STRINGCONVERTER_H
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