dev_file_encod_write.c

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/* UTF-encoded file writing */

#include "fb.h"

int fb_DevFileWriteEncod( FB_FILE *handle, const void* buffer, size_t chars )
{
    FILE *fp;
    char *encod_buffer;
        ssize_t bytes;

    FB_LOCK();

    fp = (FILE*) handle->opaque;
        if( fp == NULL ) {
                FB_UNLOCK();
                return fb_ErrorSetNum( FB_RTERROR_ILLEGALFUNCTIONCALL );
        }

        /* convert (note: encoded file can only be opened in text-mode, so no
                                PUT# is allowed, no binary data should be emitted ever) */
        encod_buffer = fb_CharToUTF( handle->encod,
                                                                 (const char *)buffer,
                                                                 chars,
                                                                 NULL,
                                                                 &bytes );

        if( encod_buffer != NULL )
        {
                /* do write */
                if( fwrite( encod_buffer, 1, bytes, fp ) != bytes )
                {
                        FB_UNLOCK();
                        return fb_ErrorSetNum( FB_RTERROR_FILEIO );
                }

                if( encod_buffer != buffer )
                        free( encod_buffer );
        }

        FB_UNLOCK();

        return fb_ErrorSetNum( FB_RTERROR_OK );
}