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src: move console files into a subdir; NFC

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This commit is contained in:
Markus F.X.J. Oberhumer
2023-01-18 14:19:15 +01:00
parent 58343fc78d
commit 8efcf6f099
14 changed files with 19 additions and 18 deletions
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src/console/c_screen.cpp
+275
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/* c_screen.cpp -- console screen driver
This file is part of the UPX executable compressor.
Copyright (C) 1996-2023 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 1996-2023 Laszlo Molnar
All Rights Reserved.
UPX and the UCL library are free software; you can redistribute them
and/or modify them under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Markus F.X.J. Oberhumer Laszlo Molnar
<markus@oberhumer.com> <ezerotven+github@gmail.com>
*/
#include "../conf.h"
#if (USE_SCREEN)
#include "screen.h"
#define mask_fg 0x0f
#define mask_bg 0xf0
/*************************************************************************
//
**************************************************************************/
static int do_init(screen_t *s, int fd) {
int fg, bg;
if (s->init(s, fd) != 0)
return -1;
if (s->getCols(s) < 80 || s->getCols(s) > 256)
return -1;
if (s->getRows(s) < 24)
return -1;
fg = s->getFg(s);
bg = s->getBg(s);
if (s->isMono(s))
fg = -1;
if (fg == (bg >> 4))
return -1;
if (bg != BG_BLACK)
if (!s->isMono(s)) {
/* return 0; */ /* we could emulate ANSI mono */
return -1;
}
return 0;
}
static screen_t *do_construct(screen_t *s, int fd) {
if (!s)
return nullptr;
if (do_init(s, fd) != 0) {
s->destroy(s);
return nullptr;
}
return s;
}
/*************************************************************************
//
**************************************************************************/
static screen_t *screen = nullptr;
static void __acc_cdecl_atexit do_destroy(void) {
if (screen) {
if (screen->atExit)
screen->atExit();
screen->destroy(screen);
screen = nullptr;
}
}
static int mode = -1;
static int init_fg = -1;
static int init_bg = -1;
static int cur_fg = -1;
static int cur_bg = -1;
static int init(FILE *f, int o, int now) {
int fd = fileno(f);
int n;
UNUSED(now);
assert(screen == nullptr);
if (o == CON_SCREEN)
n = CON_SCREEN;
else if (o == CON_INIT) /* use by default */
n = CON_SCREEN;
else if (o == CON_ANSI_COLOR) /* can emulate ANSI color */
n = CON_ANSI_COLOR;
else if (o == CON_ANSI_MONO) /* can emulate ANSI mono */
n = CON_ANSI_MONO;
else
return CON_INIT;
#if (ACC_OS_DOS32) && defined(__DJGPP__)
if (!screen)
screen = do_construct(screen_djgpp2_construct(), fd);
#endif
#if (USE_SCREEN_WIN32)
if (!screen)
screen = do_construct(screen_win32_construct(), fd);
#endif
#if (USE_SCREEN_VCSA)
if (!screen)
screen = do_construct(screen_vcsa_construct(), fd);
#endif
#if (USE_SCREEN_CURSES)
if (!screen && o == CON_SCREEN)
screen = do_construct(screen_curses_construct(), fd);
#endif
if (!screen)
return CON_INIT;
mode = screen->getMode(screen);
init_fg = cur_fg = screen->getFg(screen);
init_bg = cur_bg = screen->getBg(screen);
if (screen->isMono(screen))
cur_fg = -1;
atexit(do_destroy);
return n;
}
static int set_fg(FILE *f, int fg) {
const int last_fg = cur_fg;
int f1 = fg & mask_fg;
int f2 = init_fg & mask_fg;
UNUSED(f);
cur_fg = fg;
if (screen->isMono(screen)) {
const int b = (init_bg & mask_bg) >> 4;
if (fg == -1) /* restore startup fg */
f1 = f2;
else if (b == 0)
f1 = (f2 <= 8) ? 15 : 8;
else if (b <= 8)
f1 = (f2 == 0) ? 15 : 0;
else
f1 = (f2 == 0) ? 8 : 0;
} else if (con_mode == CON_ANSI_MONO && f1 != f2) {
f1 = f2 ^ 0x08;
}
screen->setFg(screen, f1 & mask_fg);
return last_fg;
}
static void print0(FILE *f, const char *ss) {
int cx, cy;
int old_cx = 0, old_cy = 0;
const int sx = screen->getCols(screen);
const int sy = screen->getRows(screen);
int pass;
// Note:
// We use 2 passes to avoid unnecessary system calls because
// scrollUp() under Win32 is *extremely* slow.
UNUSED(f);
screen->getCursor(screen, &old_cx, &old_cy);
cx = old_cx;
cy = old_cy;
for (pass = 0; pass < 2; pass++) {
const char *s = ss;
// char buffer for pass 2
char p[256 + 1];
int pi = 0, px = 0, py = 0;
for (;;) {
// walk over whitespace
for (;;) {
if (*s == '\n') {
cx = 0;
cy++;
} else if (*s == '\r') {
cx = 0;
if (pass > 0 && cy < sy)
screen->clearLine(screen, cy);
} else
break;
s++;
}
// adjust cursor
if (cx >= sx) {
cx = 0;
cy++;
}
if (pass > 0) {
// check if we should print something
if (pi > 0 && (*s == 0 || py != cy)) {
p[pi] = 0;
screen->putString(screen, p, px, py);
pi = 0;
}
// check if we should scroll even more (this can happen
// if the string is longer than sy lines)
if (cy >= sy) {
int scroll_y = cy - sy + 1;
screen->scrollUp(screen, scroll_y);
cy -= scroll_y;
if (cy < 0)
cy = 0;
}
}
// done ?
if (*s == 0)
break;
if (pass > 0) {
// store current char
if (pi == 0) {
px = cx;
py = cy;
}
p[pi++] = *s;
}
// advance
cx++;
s++;
}
if (pass == 0) {
// end of pass 1 - scroll up, restore cursor
if (cy >= sy) {
int scroll_y = cy - sy + 1;
screen->scrollUp(screen, scroll_y);
cy = old_cy - scroll_y;
if (cy < 0)
cy = 0;
} else
cy = old_cy;
cx = old_cx;
}
}
screen->setCursor(screen, cx, cy);
screen->refresh(screen);
}
static bool intro(FILE *f) {
UNUSED(f);
#if (USE_FRAMES)
if (screen->intro)
return screen->intro(screen, screen_show_frames);
#endif
return 0;
}
console_t console_screen = {init, set_fg, print0, intro};
#endif /* USE_SCREEN */
/* vim:set ts=4 sw=4 et: */