154 lines
4.3 KiB
C
154 lines
4.3 KiB
C
/* xterm.c */
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/* This "driver" is designed to go on top of an existing driver
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to provide support for features only present if using an
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xterm or compatible program for your console output.
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Currently, it supports resizing and separating debug messages from
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program output.
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It does not currently support changing the title bar.
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*/
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <termios.h>
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#include <errno.h>
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#include "windows.h"
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#include "console.h"
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#include "debug.h"
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#define ESC '\x1b'
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static BOOL32 wine_create_console(FILE **master, FILE **slave, int *pid);
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static FILE *wine_openpty(FILE **master, FILE **slave, char *name,
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struct termios *term, struct winsize *winsize);
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/* The console -- I chose to keep the master and slave
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* (UNIX) file descriptors around in case they are needed for
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* ioctls later. The pid is needed to destroy the xterm on close
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*/
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typedef struct _XTERM_CONSOLE {
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FILE *master; /* xterm side of pty */
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FILE *slave; /* wine side of pty */
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int pid; /* xterm's pid, -1 if no xterm */
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} XTERM_CONSOLE;
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static XTERM_CONSOLE xterm_console;
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CONSOLE_device chain;
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FILE *old_in, *old_out;
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void XTERM_Start()
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{
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/* Here, this is a supplementary driver so we should remember to call
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the chain. */
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chain.init = driver.init;
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driver.init = XTERM_Init;
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chain.close = driver.close;
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driver.close = XTERM_Close;
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chain.resizeScreen = driver.resizeScreen;
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driver.resizeScreen = XTERM_ResizeScreen;
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}
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void XTERM_Init()
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{
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wine_create_console(&xterm_console.master, &xterm_console.slave,
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&xterm_console.pid);
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old_in = driver.console_in;
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driver.console_in = xterm_console.slave;
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old_out = driver.console_out;
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driver.console_out = xterm_console.slave;
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/* Then call the chain... */
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if (chain.init)
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chain.init();
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}
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void XTERM_Close()
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{
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/* Call the chain first... */
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if (chain.close)
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chain.close();
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driver.console_in = old_in;
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driver.console_out = old_out;
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/* make sure a xterm exists to kill */
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if (xterm_console.pid != -1) {
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kill(xterm_console.pid, SIGTERM);
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}
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}
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void XTERM_ResizeScreen(int x, int y)
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{
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char temp[100];
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/* Call the chain first, there shoudln't be any... */
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if (chain.resizeScreen)
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chain.resizeScreen(x, y);
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sprintf(temp, "\x1b[8;%d;%dt", y, x);
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CONSOLE_WriteRawString(temp);
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CONSOLE_NotifyResizeScreen(x, y);
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}
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static BOOL32 wine_create_console(FILE **master, FILE **slave, int *pid)
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{
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/* There is definately a bug in this routine that causes a lot
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of garbage to be written to the screen, but I can't find it...
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*/
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struct termios term;
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char buf[1024];
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char c = '\0';
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int status = 0;
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int i;
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int tmaster, tslave;
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if (tcgetattr(0, &term) < 0) return FALSE;
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term.c_lflag |= ICANON;
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term.c_lflag &= ~ECHO;
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if (wine_openpty(&tmaster, &tslave, NULL, &term, NULL) < 0)
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return FALSE;
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*master = fdopen(tmaster, "r+");
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*slave = fdopen(tslave, "r+");
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if ((*pid=fork()) == 0) {
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tcsetattr(fileno(*slave), TCSADRAIN, &term);
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sprintf(buf, "-Sxx%d", fileno(*master));
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execlp(CONSOLE_XTERM_PROG, CONSOLE_XTERM_PROG, buf, "-fg",
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"white", "-bg", "black", NULL);
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ERR(console, "error creating xterm\n");
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exit(1);
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}
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/* most xterms like to print their window ID when used with -S;
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* read it and continue before the user has a chance...
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* NOTE: this is the reason we started xterm with ECHO off,
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* we'll turn it back on below
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*/
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for (i=0; c!='\n'; (status=fread(&c, 1, 1, *slave)), i++) {
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if (status == -1 && c == '\0') {
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/* wait for xterm to be created */
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usleep(100);
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}
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if (i > 10000) {
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WARN(console, "can't read xterm WID\n");
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kill(*pid, SIGKILL);
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return FALSE;
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}
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}
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term.c_lflag |= ECHO;
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tcsetattr(fileno(*master), TCSADRAIN, &term);
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return TRUE;
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}
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