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iowin.c
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/*
* FED - Folding Editor
*
* By Shawn Hargreaves, 1994
*
* See README.TXT for copyright conditions
*
* Windows-specific IO routines.
*/
#ifndef TARGET_WIN
#error This file should only be compiled as part of the Windows target
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <process.h>
#define NO_STRICT
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <mmsystem.h>
#include <shellapi.h>
#include "fed.h"
HWND hwnd = NULL;
HANDLE sleep_object = NULL;
HFONT font = NULL;
HFONT font2 = NULL;
CRITICAL_SECTION crit;
HDC backbuffer_dc = NULL;
HBITMAP backbuffer_bmp = NULL;
HBITMAP prev_backbuffer_bmp = NULL;
int backbuffer_w = 0;
int backbuffer_h = 0;
int font_w = 1;
int font_h = 1;
volatile int window_inited = FALSE;
volatile int window_closed = FALSE;
int focused = FALSE;
char window_title[1024] = "FED";
int screen_w = 80;
int screen_h = 40;
int new_screen_w = 80;
int new_screen_h = 40;
int got_screen_size = FALSE;
int maximize = FALSE;
int screen_x = 0;
int screen_y = 0;
int got_screen_pos = FALSE;
int term_inited = FALSE;
int dirty = FALSE;
int lock_display = FALSE;
typedef struct SCREEN_CELL
{
short ch;
unsigned char col;
} SCREEN_CELL;
SCREEN_CELL **screen;
int x_pos = 0, y_pos = 0;
int _x_pos = 0, _y_pos = 0;
int attrib = 7;
int norm_attrib = 7;
int show_curs = 0;
int m_x = -1;
int m_y = -1;
int m_b = 0;
static volatile int _mouse_x = -256;
static volatile int _mouse_y = -256;
static volatile int _mouse_b = 0;
static volatile int captured = 0;
int mouse_height = 1;
int nosleep = FALSE;
volatile int winched = 0;
#define KEY_BUFFER_SIZE 256
volatile int key_buffer_start = 0;
volatile int key_buffer_end = 0;
typedef struct KEY
{
int key;
int mod;
} KEY;
volatile KEY key_buffer[KEY_BUFFER_SIZE];
#define MSG_REDRAW (WM_USER+0)
#define MSG_SET_TITLE (WM_USER+1)
#define MSG_CLOSE (WM_USER+2)
#define MSG_SHOWMOUSE (WM_USER+3)
#define MSG_HIDEMOUSE (WM_USER+4)
void refresh_screen()
{
int x, y;
EnterCriticalSection(&crit);
if (winched == 2) {
disp_exit();
term_inited = FALSE;
if (new_screen_h != screen_h) {
for (y=new_screen_h; y<screen_h; y++)
free(screen[y]);
screen = realloc(screen, new_screen_h * sizeof(SCREEN_CELL *));
for (y=screen_h; y<new_screen_h; y++) {
screen[y] = malloc(new_screen_w * sizeof(SCREEN_CELL));
for (x=0; x<new_screen_w; x++) {
screen[y][x].ch = ' ';
screen[y][x].col = 0;
}
}
}
if (new_screen_w != screen_w) {
for (y=0; y<new_screen_h; y++) {
screen[y] = realloc(screen[y], new_screen_w * sizeof(SCREEN_CELL));
for (x=screen_w; x<new_screen_w; x++) {
screen[y][x].ch = ' ';
screen[y][x].col = 0;
}
}
}
screen_w = new_screen_w;
screen_h = new_screen_h;
term_inited = TRUE;
disp_init();
winched = 1;
}
LeaveCriticalSection(&crit);
if (dirty) {
SendMessage(hwnd, MSG_REDRAW, 0, 0);
dirty = FALSE;
}
}
void term_init(int screenheight)
{
int x, y;
if (term_inited)
return;
EnterCriticalSection(&crit);
screen = malloc(screen_h * sizeof(SCREEN_CELL *));
for (y=0; y<screen_h; y++) {
screen[y] = malloc(screen_w * sizeof(SCREEN_CELL));
for (x=0; x<screen_w; x++) {
screen[y][x].ch = ' ';
screen[y][x].col = 0;
}
}
term_inited = TRUE;
dirty = TRUE;
errno = 0;
LeaveCriticalSection(&crit);
}
void term_exit()
{
int y;
if (!term_inited)
return;
EnterCriticalSection(&crit);
term_inited = FALSE;
for (y=0; y<screen_h; y++)
free(screen[y]);
free(screen);
screen = NULL;
LeaveCriticalSection(&crit);
}
void term_suspend(int newline)
{
}
void term_reinit(int wait)
{
}
#define VK(k) (k | 0x8000)
typedef struct KEYINFO
{
KEY k;
int c;
} KEYINFO;
static KEYINFO keyinfo[] =
{
{ { 1, -1 }, 7681 }, /* ctrl+A */
{ { 2, -1 }, 12290 }, /* ctrl+B */
{ { 3, -1 }, 11779 }, /* ctrl+C */
{ { 4, -1 }, 8196 }, /* ctrl+D */
{ { 5, -1 }, 4613 }, /* ctrl+E */
{ { 6, -1 }, 8454 }, /* ctrl+F */
{ { 7, -1 }, 8711 }, /* ctrl+G */
{ { 11, -1 }, 9483 }, /* ctrl+K */
{ { 12, -1 }, 9740 }, /* ctrl+L */
{ { 14, -1 }, 12558 }, /* ctrl+N */
{ { 15, -1 }, 6159 }, /* ctrl+O */
{ { 16, -1 }, 12813 }, /* ctrl+P */
{ { 17, -1 }, 4113 }, /* ctrl+Q */
{ { 18, -1 }, 4882 }, /* ctrl+R */
{ { 19, -1 }, 7955 }, /* ctrl+S */
{ { 20, -1 }, 5140 }, /* ctrl+T */
{ { 21, -1 }, 5653 }, /* ctrl+U */
{ { 22, -1 }, 12054 }, /* ctrl+V */
{ { 23, -1 }, 4375 }, /* ctrl+W */
{ { 24, -1 }, 11544 }, /* ctrl+X */
{ { 25, -1 }, 5401 }, /* ctrl+Y */
{ { 26, -1 }, 11290 }, /* ctrl+Z */
{ { 27, -1 }, 283 }, /* esc */
{ { 8, -1 }, 3592 }, /* backspace */
{ { 9, -1 }, 3849 }, /* tab */
{ { 29, -1 }, 6683 }, /* ctrl+] */
{ { 127, -1 }, 3711 }, /* ctrl+backspace */
{ { VK(VK_UP), KF_CTRL }, 18989 }, /* ctrl+up */
{ { VK(VK_DOWN), KF_CTRL }, 20011 }, /* ctrl+down */
{ { VK(VK_RIGHT), KF_CTRL }, 29696 }, /* ctrl+right */
{ { VK(VK_LEFT), KF_CTRL }, 29440 }, /* ctrl+left */
{ { VK(VK_UP), -1 }, 18432 }, /* up */
{ { VK(VK_DOWN), -1 }, 20480 }, /* down */
{ { VK(VK_RIGHT), -1 }, 19712 }, /* right */
{ { VK(VK_LEFT), -1 }, 19200 }, /* left */
{ { VK(VK_DELETE), -1 }, 21248 }, /* delete */
{ { VK(VK_INSERT), KF_CTRL }, 5897 }, /* ctrl+insert */
{ { VK(VK_INSERT), -1 }, 20992 }, /* insert */
{ { VK(VK_HOME), KF_CTRL }, 30464 }, /* ctrl+home */
{ { VK(VK_HOME), -1 }, 18176 }, /* home */
{ { VK(VK_END), KF_CTRL }, 29952 }, /* ctrl+end */
{ { VK(VK_END), -1 }, 20224 }, /* end */
{ { VK(VK_PRIOR), -1 }, 18688 }, /* pgup */
{ { VK(VK_NEXT), -1 }, 20736 }, /* pgdn */
{ { VK(VK_RETURN), KF_CTRL }, 7178 }, /* ctrl+enter */
{ { VK(VK_RETURN), -1 }, 7181 }, /* enter */
{ { VK(VK_F1), KF_CTRL }, 24064 }, /* ctrl+F1 */
{ { VK(VK_F1), -1 }, 15104 }, /* F1 */
{ { VK(VK_F2), KF_CTRL }, 24320 }, /* ctrl+F2 */
{ { VK(VK_F2), -1 }, 15360 }, /* F2 */
{ { VK(VK_F3), KF_CTRL }, 24576 }, /* ctrl+F3 */
{ { VK(VK_F3), -1 }, 15616 }, /* F3 */
{ { VK(VK_F4), KF_CTRL }, 24832 }, /* ctrl+F4 */
{ { VK(VK_F4), -1 }, 15872 }, /* F4 */
{ { VK(VK_F5), KF_CTRL }, 25088 }, /* ctrl+F5 */
{ { VK(VK_F5), -1 }, 16128 }, /* F5 */
{ { VK(VK_F6), KF_CTRL }, 25344 }, /* ctrl+F6 */
{ { VK(VK_F6), -1 }, 16384 }, /* F6 */
{ { VK(VK_F7), KF_CTRL }, 25600 }, /* ctrl+F7 */
{ { VK(VK_F7), -1 }, 16640 }, /* F7 */
{ { VK(VK_F8), KF_CTRL }, 25856 }, /* ctrl+F8 */
{ { VK(VK_F8), -1 }, 16896 }, /* F8 */
{ { VK(VK_F9), KF_CTRL }, 26112 }, /* ctrl+F9 */
{ { VK(VK_F9), -1 }, 17152 }, /* F9 */
{ { VK(VK_F10), KF_CTRL }, 26368 }, /* ctrl+F10 */
{ { VK(VK_F10), -1 }, 17408 }, /* F10 */
};
static int syskeys[] =
{
VK_UP,
VK_DOWN,
VK_RIGHT,
VK_LEFT,
VK_DELETE,
VK_INSERT,
VK_HOME,
VK_END,
VK_PRIOR,
VK_NEXT,
VK_RETURN,
VK_F1,
VK_F2,
VK_F3,
VK_F4,
VK_F5,
VK_F6,
VK_F7,
VK_F8,
VK_F9,
VK_F10,
};
static int skipkeys[] =
{
'\r',
'\n',
};
int gch()
{
KEY k;
int i;
if (term_inited)
refresh_screen();
while (key_buffer_start == key_buffer_end) {
lock_display = FALSE;
usleep(100);
}
k = key_buffer[key_buffer_start];
if (key_buffer_start < KEY_BUFFER_SIZE-1)
key_buffer_start++;
else
key_buffer_start = 0;
if (key_buffer_start == key_buffer_end)
ResetEvent(sleep_object);
for (i=0; i<(int)(sizeof(keyinfo)/sizeof(KEYINFO)); i++) {
if ((keyinfo[i].k.key == k.key) &&
((keyinfo[i].k.mod < 0) || (keyinfo[i].k.mod == k.mod)))
return keyinfo[i].c;
}
return k.key;
}
int keypressed()
{
if (term_inited)
refresh_screen();
if (!auto_input_waiting())
usleep(10);
if (key_buffer_start != key_buffer_end)
return TRUE;
lock_display = FALSE;
return FALSE;
}
int modifiers()
{
int m = 0;
if (focused) {
if (GetAsyncKeyState(VK_SHIFT) & 0x8000)
m |= KF_SHIFT;
if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
m |= KF_CTRL;
if (GetAsyncKeyState(VK_MENU) & 0x8000)
m |= KF_ALT;
}
return m;
}
int _modifiers()
{
int m = 0;
if (GetKeyState(VK_CONTROL) & 0x8000)
m |= KF_CTRL;
if (GetKeyState(VK_MENU) & 0x8000)
m |= KF_ALT;
return m;
}
void pch(int c)
{
if ((x_pos >= 0) && (x_pos < screen_w)) {
screen[y_pos][x_pos].ch = c;
screen[y_pos][x_pos].col = attrib;
dirty = TRUE;
}
x_pos++;
}
void mywrite(char *s)
{
while ((*s) && (x_pos < screen_w)) {
if (x_pos >= 0) {
screen[y_pos][x_pos].ch = *s;
screen[y_pos][x_pos].col = attrib;
dirty = TRUE;
}
s++;
x_pos++;
}
while (*s) {
s++;
x_pos++;
}
}
void del_to_eol()
{
if (x_pos < screen_w) {
x_pos = MAX(x_pos, 0);
while (x_pos<screen_w) {
screen[y_pos][x_pos].ch = ' ';
screen[y_pos][x_pos].col = attrib;
x_pos++;
}
dirty = TRUE;
}
}
void cr_scroll()
{
int x, y;
if (y_pos < screen_h-1) {
y_pos++;
}
else {
for (y=0; y<screen_h-1; y++) {
for (x=0; x<screen_w; x++)
screen[y][x] = screen[y+1][x];
}
for (x=0; x<screen_w; x++) {
screen[screen_h-1][x].ch = ' ';
screen[screen_h-1][x].col = norm_attrib;
}
}
x_pos = 0;
_x_pos = x_pos;
_y_pos = y_pos;
dirty = TRUE;
refresh_screen();
}
void cls()
{
int x, y;
for (y=0; y<screen_h; y++) {
for (x=0; x<screen_w; x++) {
screen[y][x].ch = ' ';
screen[y][x].col = norm_attrib;
}
}
goto1(0, 0);
dirty = TRUE;
}
void home()
{
x_pos = 0;
y_pos = 0;
}
void newline()
{
if (y_pos < screen_h-1)
y_pos++;
x_pos = 0;
}
void goto1(int x, int y)
{
y = MID(0, y, screen_h-1);
x_pos = x;
y_pos = y;
}
void goto2(int x, int y)
{
y = MID(0, y, screen_h-1);
x_pos = _x_pos = x;
y_pos = _y_pos = y;
dirty = TRUE;
}
void backspace()
{
if (x_pos > 0) {
x_pos--;
pch(' ');
x_pos--;
}
}
void linefeed()
{
if (y_pos < screen_h-1)
y_pos++;
}
void cr()
{
x_pos = 0;
}
void tattr(int col)
{
attrib = col;
}
void hide_c()
{
show_curs = 0;
dirty = TRUE;
}
void show_c()
{
show_curs = (config.big_cursor) ? 2 : 1;
dirty = TRUE;
}
void show_c2(int ovr)
{
show_curs = (((ovr) ? !config.big_cursor : config.big_cursor) ? 2 : 1);
dirty = TRUE;
}
void print(int c)
{
}
int printer_ready()
{
return FALSE;
}
char *save_screen(int x, int y, int w, int h)
{
SCREEN_CELL *data;
int _x, _y;
w++;
h++;
if (x < 0) {
w += x;
x = 0;
}
if (y < 0) {
h += y;
y = 0;
}
if (x+w > screen_w)
w = screen_w-x;
if (y+h > screen_h)
h = screen_h-y;
if ((w <= 0) || (h <= 0))
return NULL;
data = malloc(sizeof(SCREEN_CELL)*w*h);
if (!data)
return NULL;
for (_y=0; _y<h; _y++)
for (_x=0; _x<w; _x++)
data[_y*w+_x] = screen[y+_y][x+_x];
return (char *)data;
}
void restore_screen(int x, int y, int w, int h, char *buf)
{
SCREEN_CELL *data = (SCREEN_CELL *)buf;
int _x, _y;
w++;
h++;
if (x < 0) {
w += x;
x = 0;
}
if (y < 0) {
h += y;
y = 0;
}
if (x+w > screen_w)
w = screen_w-x;
if (y+h > screen_h)
h = screen_h-y;
if (buf) {
for (_y=0; _y<h; _y++)
for (_x=0; _x<w; _x++)
screen[y+_y][x+_x] = data[_y*w+_x];
dirty = TRUE;
free(buf);
}
else
dirty_everything();
}
void clear_keybuf()
{
while (keypressed())
gch();
}
MYFILE *open_file(char *name, int mode)
{
FILE *f;
if (mode == FMODE_READ)
f = fopen(name, "rb");
else if (mode == FMODE_WRITE)
f = fopen(name, "wb");
else
f = NULL;
if (!f) {
if (!errno)
errno = ENMFILE;
}
else
errno = 0;
return f;
}
int close_file(MYFILE *f)
{
if (f) {
fclose(f);
return errno;
}
return 0;
}
int get_char(MYFILE *f)
{
int c = fgetc(f);
if (c == EOF)
errno = EOF;
return c;
}
int peek_char(MYFILE *f)
{
int c;
c = fgetc(f);
ungetc(c, f);
if (c == EOF)
errno = EOF;
return c;
}
void put_char(MYFILE *f, int c)
{
fputc(c, f);
}
int file_exist_count;
int count_file_exists(char *filename, int param)
{
file_exist_count++;
return 0;
}
int file_exists(char *p)
{
if ((!strchr(p, '*')) && (!strchr(p, '?')))
return (file_size(p) >= 0);
file_exist_count = 0;
do_for_each_file(p, count_file_exists, 0);
return (file_exist_count > 0);
}
int file_size(char *p)
{
struct stat entry;
if (stat(p, &entry) != 0)
return -1;
if (!(entry.st_mode & S_IFREG))
return -1;
return entry.st_size;
}
long file_time(char *p)
{
struct stat entry;
if (stat(p, &entry) != 0)
return 0;
if (!(entry.st_mode & S_IFREG))
return 0;
return entry.st_mtime;
}
int search_path(char *result, char *prog, char *exts, char *var)
{
/* search for a file on the disk, searching PATH if needed */
char *p;
int pos;
strcpy(result,prog);
if (find_program(result,exts)) { /* look in current directory */
return TRUE;
}
p=getenv(var);
if (p!=NULL) {
while(*p) {
while ((*p==' ') || (*p==',') || (*p==';') || (*p==':'))
p++;
if(*p) {
pos=0;
result[0]=0;
while ((*p) && (*p!=' ') && (*p!=',') && (*p!=';') && (*p!=':')) {
result[pos++]=*(p++);
result[pos]=0;
}
append_backslash(result);
strcat(result,prog);
if (find_program(result,exts))
return TRUE;
}
}
}
return FALSE;
}
int find_program(char *name, char *ext)
{
/* look for a file, checking the possible extensions */
char *p;
int pos;
if ((ext) && (*ext) && (*(find_extension(name))==0)) {
p = ext;
while(*p) {
while ((*p==' ') || (*p==',') || (*p==';'))
p++;
if(*p) {
pos=strlen(name);
name[pos++]='.';
name[pos]=0;
while ((*p) && (*p!=' ') && (*p!=',') && (*p!=';')) {
name[pos++]=*(p++);
name[pos]=0;
}
if (file_exists(name))
return TRUE;
remove_extension(name);
}
}
}
else
return file_exists(name);
return FALSE;
}
int do_for_each_file(char *name, int (*call_back)(char *, int), int param)
{
char buf[1024];
int c;
struct _finddata_t dta;
long handle;
errno = 0;
handle = _findfirst(name, &dta);
if (errno!=0) {
for (c=0; name[c]; c++)
if ((name[c]=='*') || (name[c]=='?'))
goto dont_load;
errno=0;
(*call_back)(name,param);
dont_load:
return errno;
}
do {
if (!(dta.attrib & (_A_HIDDEN | _A_SUBDIR | _A_SYSTEM))) {
strcpy(buf,name);
strcpy(get_fname(buf),dta.name);
(*call_back)(buf,param);
if (errno!=0)
break;
}
} while (_findnext(handle, &dta)==0);
_findclose(handle);
errno=0;
return errno;
}
int do_for_each_directory(char *name, int (*call_back)(char *, int), int param)
{
char buf[1024];