io_printbuff_wstr.c

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/* low-level print to console function */

#include "../fb.h"
#include "fb_private_console.h"

#define ENTER_UTF8  "\e%G"
#define EXIT_UTF8   "\e%@"

void fb_ConsolePrintBufferWstrEx( const FB_WCHAR *buffer, size_t chars, int mask )
{
        size_t avail, avail_len;
        char *temp;

        if( !__fb_con.inited )
        {
                /* !!!FIXME!!! is this ok or should it be converted to UTF-8 too? */
                fwrite( buffer, sizeof( FB_WCHAR ), chars, stdout );
                fflush( stdout );
                return;
        }

        temp = alloca( chars * 4 + 1 );

        BG_LOCK( );
        fb_hRecheckConsoleSize( );
        BG_UNLOCK( );

        /* ToDo: handle scrolling for internal characters/attributes buffer? */
        avail = (__fb_con.w * __fb_con.h) - (((__fb_con.cur_y - 1) * __fb_con.w) + __fb_con.cur_x - 1);
        avail_len = chars;
        if (avail < avail_len)
                avail_len = avail;

        /* !!!FIXME!!! to support unicode the char_buffer would have to be a wchar_t,
                                   slowing down non-unicode printing.. */
        fb_wstr_ConvToA( temp, buffer, avail_len );

        memcpy( __fb_con.char_buffer + ((__fb_con.cur_y - 1) * __fb_con.w) + __fb_con.cur_x - 1,
                temp,
                avail_len );

        memset( __fb_con.attr_buffer + ((__fb_con.cur_y - 1) * __fb_con.w) + __fb_con.cur_x - 1,
                __fb_con.fg_color | (__fb_con.bg_color << 4),
                avail_len );

        /* convert wchar_t to UTF-8 */
        ssize_t bytes;

        fb_WCharToUTF( FB_FILE_ENCOD_UTF8, buffer, chars, temp, &bytes );
        /* add null-term */
        temp[bytes] = '\0';

        fputs( ENTER_UTF8, stdout );

        fputs( temp, stdout );

        fputs( EXIT_UTF8, stdout );

        /* update x and y coordinates.. */
        for( ; chars; chars--, buffer++ )
        {
                ++__fb_con.cur_x;
                if( (*buffer == _LC('\n')) || (__fb_con.cur_x >= __fb_con.w) )
                {
                        __fb_con.cur_x = 1;
                        ++__fb_con.cur_y;
                        if( __fb_con.cur_y > __fb_con.h )
                                __fb_con.cur_y = __fb_con.h;
                }
        }

        fflush( stdout );
}

void fb_ConsolePrintBufferWstr( const FB_WCHAR *buffer, int mask )
{
        return fb_ConsolePrintBufferWstrEx( buffer, fb_wstr_Len( buffer ), mask );
}