Function read_pipe

src/engine/execnt.c:704–757

static void read_pipe
(
    HANDLE   in,  /* the pipe to read from */
    string * out
)
{
    DWORD bytesInBuffer = 0;
    DWORD bytesAvailable = 0;

    do
    {
        /* check if we have any data to read */
        if ( !PeekNamedPipe( in, ioBuffer, IO_BUFFER_SIZE, &bytesInBuffer,
            &bytesAvailable, NULL ) )
            bytesAvailable = 0;

        /* read in the available data */
        if ( bytesAvailable > 0 )
        {
            /* we only read in the available bytes, to avoid blocking */
            if ( ReadFile( in, ioBuffer, bytesAvailable <= IO_BUFFER_SIZE ?
                bytesAvailable : IO_BUFFER_SIZE, &bytesInBuffer, NULL ) )
            {
                if ( bytesInBuffer > 0 )
                {
                    /* Clean up some illegal chars. */
                    int i;
                    for ( i = 0; i < bytesInBuffer; ++i )
                    {
                        if ( ( (unsigned char)ioBuffer[ i ] < 1 ) )
                            ioBuffer[ i ] = '?';
                    }
                    /* Null, terminate. */
                    ioBuffer[ bytesInBuffer ] = '\0';
                    /* Append to the output. */
                    string_append( out, ioBuffer );
                    /* Subtract what we read in. */
                    bytesAvailable -= bytesInBuffer;
                }
                else
                {
                    /* Likely read a error, bail out. */
                    bytesAvailable = 0;
                }
            }
            else
            {
                /* Definitely read a error, bail out. */
                bytesAvailable = 0;
            }
        }
    }
    while ( bytesAvailable > 0 );
}


static void read_output()