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116 lines
2.5 KiB
116 lines
2.5 KiB
/* fileio.c -- does standard I/O
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(c) 1998-2007 (W3C) MIT, ERCIM, Keio University
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See tidy.h for the copyright notice.
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Default implementations of Tidy input sources
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and output sinks based on standard C FILE*.
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*/
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#include <stdio.h>
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#include "forward.h"
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#include "fileio.h"
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#include "tidy.h"
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#if !defined(NDEBUG) && defined(_MSC_VER)
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#include "sprtf.h"
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#endif
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typedef struct _fp_input_source
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{
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FILE* fp;
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TidyBuffer unget;
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} FileSource;
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static int TIDY_CALL filesrc_getByte( void* sourceData )
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{
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FileSource* fin = (FileSource*) sourceData;
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int bv;
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if ( fin->unget.size > 0 )
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bv = tidyBufPopByte( &fin->unget );
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else
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bv = fgetc( fin->fp );
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return bv;
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}
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static Bool TIDY_CALL filesrc_eof( void* sourceData )
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{
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FileSource* fin = (FileSource*) sourceData;
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Bool isEOF = ( fin->unget.size == 0 );
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if ( isEOF )
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isEOF = feof( fin->fp ) != 0;
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return isEOF;
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}
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static void TIDY_CALL filesrc_ungetByte( void* sourceData, byte bv )
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{
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FileSource* fin = (FileSource*) sourceData;
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tidyBufPutByte( &fin->unget, bv );
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}
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#if SUPPORT_POSIX_MAPPED_FILES
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#define initFileSource initStdIOFileSource
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#define freeFileSource freeStdIOFileSource
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#endif
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int TY_(initFileSource)( TidyAllocator *allocator, TidyInputSource* inp, FILE* fp )
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{
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FileSource* fin = NULL;
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fin = (FileSource*) TidyAlloc( allocator, sizeof(FileSource) );
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if ( !fin )
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return -1;
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TidyClearMemory( fin, sizeof(FileSource) );
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fin->unget.allocator = allocator;
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fin->fp = fp;
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inp->getByte = filesrc_getByte;
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inp->eof = filesrc_eof;
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inp->ungetByte = filesrc_ungetByte;
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inp->sourceData = fin;
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return 0;
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}
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void TY_(freeFileSource)( TidyInputSource* inp, Bool closeIt )
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{
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FileSource* fin = (FileSource*) inp->sourceData;
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if ( closeIt && fin && fin->fp )
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fclose( fin->fp );
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tidyBufFree( &fin->unget );
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TidyFree( fin->unget.allocator, fin );
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}
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void TIDY_CALL TY_(filesink_putByte)( void* sinkData, byte bv )
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{
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FILE* fout = (FILE*) sinkData;
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fputc( bv, fout );
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#if !defined(NDEBUG) && defined(_MSC_VER)
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if (_fileno(fout) != 2)
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{
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if (bv != 0x0d)
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{
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/*\
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* avoid duplicate newline - SPRTF will translate an 0x0d to CRLF,
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* and do the same with the following 0x0a
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\*/
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SPRTF("%c",bv);
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}
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}
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#endif
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}
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void TY_(initFileSink)( TidyOutputSink* outp, FILE* fp )
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{
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outp->putByte = TY_(filesink_putByte);
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outp->sinkData = fp;
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}
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/*
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* local variables:
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* mode: c
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* indent-tabs-mode: nil
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* c-basic-offset: 4
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* eval: (c-set-offset 'substatement-open 0)
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* end:
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*/
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