dev_file_write_wstr.c

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/* wstring to ascii file writing function */

#include "fb.h"

int fb_DevFileWriteWstr( FB_FILE *handle, const FB_WCHAR* src, size_t chars )
{
    FILE *fp;
    char *buffer;
    int res;

    FB_LOCK();

    fp = (FILE*) handle->opaque;

        if( fp == NULL ) {
                FB_UNLOCK();
                return fb_ErrorSetNum( FB_RTERROR_ILLEGALFUNCTIONCALL );
        }

        if( chars < FB_LOCALBUFF_MAXLEN )
                buffer = alloca( chars + 1 );
        else
                buffer = malloc( chars + 1 );

        /* convert to ascii, file should be opened with the ENCODING option
           to allow UTF characters to be written */
        fb_wstr_ConvToA( buffer, src, chars );

        /* do write */
        res = fwrite( (void *)buffer, 1, chars, fp ) == chars;

        if( chars >= FB_LOCALBUFF_MAXLEN )
                free( buffer );

        FB_UNLOCK();

        return fb_ErrorSetNum( (res? FB_RTERROR_OK: FB_RTERROR_FILEIO) );
}