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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#if !defined(VMS) && !defined(_WIN32)
#include <unistd.h>
#else
#include <io.h>
#define lseek _lseek
#endif
#include "gks.h"
#include "gkscore.h"
#if defined(_WIN32)
#define STRSAFE_NO_DEPRECATE
#define _CRT_NON_CONFORMING_WCSTOK
#define __STRSAFE__NO_INLINE
#include <windows.h>
#include <strsafe.h>
#endif
#ifndef MAXPATHLEN
#define MAXPATHLEN 1024
#endif
static int font_cache[95], bufcache[95][256], gks = -1;
int gks_open_font(void)
{
const char *path;
char fontdb[MAXPATHLEN];
int fd;
#ifndef _WIN32
path = gks_getenv("GKS_FONTPATH");
if (path == NULL)
{
#if 1
/* Force debian specific fallback path - /usr/share/gr/fonts/gksfont.dat */
path = "/usr/share/gr";
#else
path = gks_getenv("GRDIR");
if (path == NULL) path = GRDIR;
#endif
}
strcpy(fontdb, (char *)path);
strcat(fontdb, "/fonts/gksfont.dat");
#else
wchar_t wfontdb[MAXPATHLEN];
if (!GetEnvironmentVariableW(L"GKS_FONTPATH", wfontdb, MAXPATHLEN))
{
if (!GetEnvironmentVariableW(L"GRDIR", wfontdb, MAXPATHLEN))
{
MultiByteToWideChar(CP_UTF8, MB_PRECOMPOSED, GRDIR, -1, wfontdb, MAXPATHLEN);
}
}
StringCbCatW(wfontdb, MAXPATHLEN, L"\\FONTS\\GKSFONT.DAT");
WideCharToMultiByte(CP_UTF8, 0, wfontdb, wcslen(wfontdb) + 1, fontdb, MAXPATHLEN, NULL, NULL);
#endif
fd = gks_open_file(fontdb, "r");
return fd;
}
void gks_lookup_font(int fd, int version, int font, int chr, stroke_data_t *s)
{
/* 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 */
static int map[] = {1, 18, 1, 6, 12, 3, 8, 11, 4, 7, 10, 2, 13, 14, 5, 9, 15, 16, 17, 20, 21, 19, 22, 23};
static int gksgralmap[] = {1, 12, 6, 9, 8, 11, 5, 13, 18, 17, 19, 1, 4, 7, 24, 1, 1, 1, 1, 1, 1, 1, 23, 24};
static int s_map[] = {4, 4, 4, 4, 4, 7, 7, 7, 10, 10, 10, 7, 7, 7, 4, 4, 7, 7, 7, 4, 4, 4, 4, 4};
static int german[] = {196, 214, 220, 228, 246, 252, 223, 171, 187, 183, 169};
static char ansi[] = {'A', 'O', 'U', 'a', 'o', 'u', 'b', '<', '>', '.', '@'};
static char greek[] = {'j', 'o', 'q', 'u', 'v', 'w', 'y', 'J', 'O', 'Q', 'U', 'V', 'W', 'Y'};
static char g_map[] = {' ', 'w', ' ', 'o', 'y', 'v', 'q', ' ', 'W', ' ', 'O', 'Y', 'V', 'Q'};
char buf[256];
int umlaut, sharp_s, offset;
int i, *elptr;
char *ebptr;
if (gks == -1)
{
for (i = 0; i < 95; i++) font_cache[i] = -1;
}
if (fd != -1)
{
umlaut = sharp_s = 0;
if (chr < 0) chr += 256;
if (chr >= 127)
{
for (i = 0; i <= 10; i++)
{
if (chr == german[i])
{
chr = ansi[i];
if (i < 6)
umlaut = 1;
else if (i == 6)
sharp_s = 1;
}
}
if (chr == 215)
{
chr = 'x';
}
}
if (chr < ' ' || chr >= 127) chr = ' ';
font = abs(font) % 100;
if (font == 51)
font = 23; /* fill font */
else if (font > 23)
font = 1;
if (chr == '_')
{
if (font < 20) font = 23;
}
else if (sharp_s)
{
if (font != 23)
font = s_map[font - 1];
else
chr = 126; /* ~ */
}
else if (version == GRALGKS)
{
if (font == 13 || font == 14)
{
for (i = 0; i < 14; i++)
{
if (chr == greek[i])
{
chr = g_map[i];
break;
}
}
}
font = gksgralmap[font - 1];
}
chr -= ' ';
offset = ((map[font - 1] - 1) * 95 + chr) * 256;
if (font_cache[chr] != offset)
{
if (lseek(fd, offset, 0) != -1)
{
if (gks_read_file(fd, buf, 256) != -1)
{
font_cache[chr] = offset;
elptr = bufcache[chr];
ebptr = buf;
for (i = 0; i < 256; i++) *elptr++ = *ebptr++;
}
else
gks_fatal_error("font file read error");
}
else
gks_fatal_error("font file positioning error");
}
memmove((void *)s, (void *)bufcache[chr], 256 * sizeof(int));
if (umlaut && (s->length < 120 - 20)) s->length += 10;
}
else
{
gks_fatal_error("can't access font database");
}
}
void gks_close_font(int fd)
{
if (fd > 0) gks_close_file(fd);
}
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