File: lang.c

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#include <string.h>
#include "misc.h"
#include "vt.h"
#include "lang.h"

int latin1 = -1;

static u8 lang_char[256];

static u8 lang_chars[1+8+8][16] =
{
    { 0, 0x23,0x24,0x40,0x5b,0x5c,0x5d,0x5e,0x5f,0x60,0x7b,0x7c,0x7d,0x7e },

    // for latin-1 font
    // English (100%)
    { 0,  '�', '$', '@', '�', '�', '�', '�', '#', '�', '�', '�', '�', '�' },
    // German (100%)
    { 0,  '#', '$', '�', '�', '�', '�', '^', '_', '�', '�', '�', '�', '�' },
    // Swedish/Finnish/Hungarian (100%)
    { 0,  '#', '�', '�', '�', '�', '�', '�', '_', '�', '�', '�', '�', '�' },
    // Italian (100%)
    { 0,  '�', '$', '�', '�', '�', '�', '�', '#', '�', '�', '�', '�', '�' },
    // French (100%)
    { 0,  '�', '�', '�', '�', '�', '�', '�', '#', '�', '�', '�', '�', '�' },
    // Portuguese/Spanish (100%)
    { 0,  '�', '$', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�' },
    // Czech/Slovak (60%)
    { 0,  '#', 'u', 'c', 't', 'z', '�', '�', 'r', '�', '�', 'e', '�', 's' },
    // reserved (English mapping)
    { 0,  '�', '$', '@', '�', '�', '�', '�', '#', '�', '�', '�', '�', '�' },

    // for latin-2 font
    // Polish (100%)
    { 0,  '#', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�' },
    // German (100%)
    { 0,  '#', '$', '�', '�', '�', '�', '^', '_', '�', '�', '�', '�', '�' },
    // Estonian (100%)
    { 0,  '#', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�' },
    // Lettish/Lithuanian (90%)
    { 0,  '#', '$', '�', '�', '�', '�', '�', '�', '�', '�', 'u', '�', 'i' },
    // French (90%)
    { 0,  '�', 'i', 'a', '�', '�', 'u', '�', '#', 'e', '�', '�', 'u', '�' },
    // Serbian/Croation/Slovenian (100%)
    { 0,  '#', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�' },
    // Czech/Slovak (100%)
    { 0,  '#', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�', '�' },
    // Rumanian (95%)
    { 0,  '#', '�', '�', '�', '�', '�', '�', 'i', '�', '�', '�', '�', '�' },
};

/* Yankable latin charset :-)
     !"#$%&'()*+,-./0123456789:;<=>?
    @ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
    `abcdefghijklmnopqrstuvwxyz{|}~
     �������������������������������
    ��������������������������������
    ��������������������������������
*/



static struct mark { u8 *g0, *latin1, *latin2; } marks[16] =
{
    /* none */		{ "#",
    			  "�",
			  "$"					},
    /* grave - ` */	{ " aeiouAEIOU",
    			  "`����������",
			  "`aeiouAEIOU"				},
    /* acute - ' */	{ " aceilnorsuyzACEILNORSUYZ",
			  "'�c��ln�rs��z�C��LN�RS��Z",
			  "'���������������������ݬ"		},
    /* cirumflex - ^ */	{ " aeiouAEIOU",
    			  "^����������",
			  "^�e��u�E��U"				},
    /* tilde - ~ */	{ " anoANO",
    			  "~������",
			  "~anoANO"				},
    /* ??? - � */	{ "",
    			  "",
			  ""					},
    /* breve - u */	{ "aA",
    			  "aA",
			  "��"					},
    /* abovedot - � */	{ "zZ",
    			  "zZ",
			  "��"					},
    /* diaeresis � */	{ "aeiouAEIOU",
    			  "����������",
			  "��i����I��"				},
    /* ??? - . */	{ "",
    			  "",
			  ""					},
    /* ringabove - � */	{ " auAU",
    			  "��u�U",
			  "�a�A�"				},
    /* cedilla - � */	{ "cstCST",
    			  "�st�ST",
			  "��Ǫ�"				},
    /* ??? - _ */	{ " ",
    			  "_",
			  "_"					},
    /* dbl acute - " */	{ " ouOU",
    			  "\"ouOU",
			  "\"����"				},
    /* ogonek - \, */	{ "aeAE",
    			  "aeAE",
			  "���"				},
    /* caron - v */	{ "cdelnrstzCDELNRSTZ",
			  "cdelnrstzCDELNRSTZ",
			  "����������̥�ة��"			},
};

static u8 g2map_latin1[] =
   /*0123456789abcdef*/
    " ���$�#��'\"�    "
    "����׵���'\"�����"
    " `�^~   �.��_\"  "
    "_���            "
    " �ЪH ILL� ��TNn"
    "K�d�hiill� ��tn\x7f";

static u8 g2map_latin2[] =
   /*0123456789abcdef*/
    " icL$Y#��'\"<    "
    "�   �u  �'\">    "
    " `�^~ ���.��_���"
    "- RC            "
    "  �aH iL�O opTNn"
    "K �dhiil�o �ptn\x7f";



void
lang_init(void)
{
    int i;

    memset(lang_char, 0, sizeof(lang_char));
    for (i = 1; i <= 13; i++)
	lang_char[lang_chars[0][i]] = i;
}


void
conv2latin(u8 *p, int n, int lang)
{
    int c, gfx = 0;

    while (n--)
    {
	if (lang_char[c = *p])
	{
	    if (not gfx || (c & 0xa0) != 0x20)
		*p = lang_chars[lang + 1][lang_char[c]];
	}
	else if ((c & 0xe8) == 0)
	    gfx = c & 0x10;
	p++;
    }
}



void
init_enhance(struct enhance *eh)
{
    eh->next_des = 0;
}

void
add_enhance(struct enhance *eh, int dcode, u32 *t)
{
    if (dcode == eh->next_des)
    {
	memcpy(eh->trip + dcode * 13, t, 13 * sizeof(*t));
	eh->next_des++;
    }
    else
	eh->next_des = -1;
}

void
enhance(struct enhance *eh, struct vt_page *vtp)
{
    int row = 0;
    u32 *p, *e;

    if (eh->next_des < 1)
	return;

    for (p = eh->trip, e = p + eh->next_des * 13; p < e; p++)
	if (*p % 2048 != 2047)
	{
	    int adr = *p % 64;
	    int mode = *p / 64 % 32;
	    int data = *p / 2048 % 128;

	    //printf("%2x,%d,%d ", mode, adr, data);
	    if (adr < 40)
	    {
		// col functions
		switch (mode)
		{
		    case 15: // char from G2 set
			if (adr < W && row < H)
			    if (latin1)
				vtp->data[row][adr] = g2map_latin1[data-32];
			    else
				vtp->data[row][adr] = g2map_latin2[data-32];
			break;
		    case 16 ... 31: // char from G0 set with diacritical mark
			if (adr < W && row < H)
			{
			    struct mark *mark = marks + (mode - 16);
			    u8 *x;

			    if (x = strchr(mark->g0, data))
				if (latin1)
				    data = mark->latin1[x - mark->g0];
				else
				    data = mark->latin2[x - mark->g0];
			    vtp->data[row][adr] = data;
			}
			break;
		}
	    }
	    else
	    {
		// row functions
		if ((adr -= 40) == 0)
		    adr = 24;
		
		switch (mode)
		{
		    case 1: // full row color
			row = adr;
			break;
		    case 4: // set active position
			row = adr;
			break;
		    case 7: // address row 0 (+ full row color)
			if (adr == 23)
			    row = 0;
			break;
		}
	    }
	}
    //printf("\n");
}