backport of local changes

1 files changed, 0 insertions, 363 deletions

diff --git a/std.c b/std.c
deleted file mode 100644
index 55da9d6..0000000
--- a/std.c
+++ /dev/null
@@ -1,363 +0,0 @@
-/* See LICENSE file for copyright and license details.
- *
- * Simple terminal daemon is a terminal emulator. It can be used in
- * combination with simple terminal to emulate a mostly VT100-compatible
- * terminal.
- * 
- * In this process std works like a filter. It reads data from a
- * pseudo-terminal and parses the escape sequences and transforms them
- * into an ed(1)-like language. The resulting data is buffered and
- * written to stdout.
- * Parallely it reads data from stdin and parses and executes the
- * commands. The resulting data is written to the pseudo-terminal.
- */
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <ctype.h>
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#if !(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
-#include <pty.h>
-#endif
-#include <signal.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#define LENGTH(x)	(sizeof(x) / sizeof((x)[0]))
-#define MAX(a,b)	(((a) > (b)) ? (a) : (b))
-#define MIN(a,b)	(((a) < (b)) ? (a) : (b))
-
-typedef struct {
-	unsigned char data[BUFSIZ];
-	int s, e;
-	int n;
-} RingBuffer;
-
-static void buffer(char c);
-static void cmd(const char *cmdstr, ...);
-static void getpty(void);
-static void movea(int x, int y);
-static void mover(int x, int y);
-static void parsecmd(void);
-static void parseesc(void);
-static void scroll(int l);
-static void shell(void);
-static void sigchld(int n);
-static char unbuffer(void);
-
-static int cols = 80, lines = 25;
-static int cx = 0, cy = 0;
-static int c;
-static int ptm, pts;
-static _Bool bold, digit, qmark;
-static pid_t pid;
-static RingBuffer buf;
-static FILE *fptm;
-
-void
-buffer(char c) {
-	if(buf.n < LENGTH(buf.data))
-		buf.n++;
-	else
-		buf.s = (buf.s + 1) % LENGTH(buf.data);
-	buf.data[buf.e++] = c;
-	buf.e %= LENGTH(buf.data);
-}
-
-void
-cmd(const char *cmdstr, ...) {
-	va_list ap;
-
-	putchar('\n');
-	putchar(':');
-	va_start(ap, cmdstr);
-	vfprintf(stdout, cmdstr, ap);
-	va_end(ap);
-}
-
-void
-movea(int x, int y) {
-	x = MAX(x, cols);
-	y = MAX(y, lines);
-	cx = x;
-	cy = y;
-	cmd("seek(%d,%d)", x, y);
-}
-
-void
-mover(int x, int y) {
-	movea(cx + x, cy + y);
-}
-
-void
-parsecmd(void) {
-}
-
-void
-parseesc(void) {
-	int i, j;
-	int arg[16];
-
-	memset(arg, 0, LENGTH(arg));
-	c = getc(fptm);
-	switch(c) {
-	case '[':
-		c = getc(fptm);
-		for(j = 0; j < LENGTH(arg);) {
-			if(isdigit(c)) {
-				digit = 1;
-				arg[j] *= 10;
-				arg[j] += c - '0';
-			}
-			else if(c == '?')
-				qmark = 1;
-			else if(c == ';') {
-				if(!digit)
-					errx(EXIT_FAILURE, "syntax error");
-				digit = 0;
-				j++;
-			}
-			else {
-				if(digit) {
-					digit = 0;
-					j++;
-				}
-				break;
-			}
-			c = getc(fptm);
-		}
-		switch(c) {
-		case '@':
-			break;
-		case 'A':
-			mover(0, j ? arg[0] : 1);
-			break;
-		case 'B':
-			mover(0, j ? -arg[0] : -1);
-			break;
-		case 'C':
-			mover(j ? arg[0] : 1, 0);
-			break;
-		case 'D':
-			mover(j ? -arg[0] : -1, 0);
-			break;
-		case 'E':
-			/* movel(j ? arg[0] : 1); */
-			break;
-		case 'F':
-			/* movel(j ? -arg[0] : -1); */
-			break;
-		case '`':
-		case 'G':
-			movea(j ? arg[0] : 1, cy);
-			break;
-		case 'f':
-		case 'H':
-			movea(arg[1] ? arg[1] : 1, arg[0] ? arg[0] : 1);
-		case 'L':
-			/* insline(j ? arg[0] : 1); */
-			break;
-		case 'M':
-			/* delline(j ? arg[0] : 1); */
-			break;
-		case 'P':
-			break;
-		case 'S':
-			scroll(j ? arg[0] : 1);
-			break;
-		case 'T':
-			scroll(j ? -arg[0] : -1);
-			break;
-		case 'd':
-			movea(cx, j ? arg[0] : 1);
-			break;
-		case 'm':
-			for(i = 0; i < j; i++) {
-				if(arg[i] >= 30 && arg[i] <= 37)
-					cmd("#%d", arg[i] - 30);
-				if(arg[i] >= 40 && arg[i] <= 47)
-					cmd("|%d", arg[i] - 40);
-				/* xterm bright colors */
-				if(arg[i] >= 90 && arg[i] <= 97)
-					cmd("#%d", arg[i] - 90);
-				if(arg[i] >= 100 && arg[i] <= 107)
-					cmd("|%d", arg[i] - 100);
-				switch(arg[i]) {
-				case 0:
-				case 22:
-					if(bold)
-						cmd("bold");
-				case 1:
-					if(!bold)
-						cmd("bold");
-					break;
-				}
-			}
-			break;
-		}
-		break;
-	default:
-		putchar('\033');
-		ungetc(c, fptm);
-	}
-}
-
-void
-scroll(int l) {
-	cmd("seek(%d,%d)", cx, cy + l);
-}
-
-void
-getpty(void) {
-	char *ptsdev;
-
-#if defined(_GNU_SOURCE)
-	ptm = getpt();
-#elif _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600
-	ptm = posix_openpt(O_RDWR);
-#else
-	ptm = open("/dev/ptmx", O_RDWR);
-	if(ptm == -1)
-		if(openpty(&ptm, &pts, NULL, NULL, NULL) == -1)
-			err(EXIT_FAILURE, "cannot open pty");
-#endif
-#if defined(_XOPEN_SOURCE)
-	if(ptm != -1) {
-		if(grantpt(ptm) == -1)
-			err(EXIT_FAILURE, "cannot grant access to pty");
-		if(unlockpt(ptm) == -1)
-			err(EXIT_FAILURE, "cannot unlock pty");
-		ptsdev = ptsname(ptm);
-		if(!ptsdev)
-			err(EXIT_FAILURE, "slave pty name undefined");
-		pts = open(ptsdev, O_RDWR);
-		if(pts == -1)
-			err(EXIT_FAILURE, "cannot open slave pty");
-	}
-	else
-		err(EXIT_FAILURE, "cannot open pty");
-#endif
-}
-
-void
-shell(void) {
-	static char *shell = NULL;
-
-	if(!shell && !(shell = getenv("SHELL")))
-		shell = "/bin/sh";
-	pid = fork();
-	switch(pid) {
-	case -1:
-		err(EXIT_FAILURE, "cannot fork");
-	case 0:
-		setsid();
-		dup2(pts, STDIN_FILENO);
-		dup2(pts, STDOUT_FILENO);
-		dup2(pts, STDERR_FILENO);
-		close(ptm);
-		putenv("TERM=vt102");
-		execvp(shell, NULL);
-		break;
-	default:
-		close(pts);
-		signal(SIGCHLD, sigchld);
-	}
-}
-
-void
-sigchld(int n) {
-	int ret;
-
-	if(waitpid(pid, &ret, 0) == -1)
-		err(EXIT_FAILURE, "waiting for child failed");
-	if(WIFEXITED(ret))
-		exit(WEXITSTATUS(ret));
-	else
-		exit(EXIT_SUCCESS);
-}
-
-char
-unbuffer(void) {
-	char c;
-
-	c = buf.data[buf.s++];
-	buf.s %= LENGTH(buf.data);
-	buf.n--;
-	return c;
-}
-
-int
-main(int argc, char *argv[]) {
-	fd_set rfds;
-
-	if(argc == 2 && !strcmp("-v", argv[1]))
-		errx(EXIT_SUCCESS, "std-"VERSION", © 2008 Matthias-Christian Ott");
-	else if(argc == 1)
-		errx(EXIT_FAILURE, "usage: std [-v]");
-	getpty();
-	shell();
-	FD_ZERO(&rfds);
-	FD_SET(STDIN_FILENO, &rfds);
-	FD_SET(ptm, &rfds);
-	if(!(fptm = fdopen(ptm, "r+")))
-		err(EXIT_FAILURE, "cannot open pty");
-	if(fcntl(ptm, F_SETFL, O_NONBLOCK) == -1)
-		err(EXIT_FAILURE, "cannot set pty to non-blocking mode");
-	if(fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK) == -1)
-		err(EXIT_FAILURE, "cannot set stdin to non-blocking mode");
-	for(;;) {
-		if(select(MAX(ptm, STDIN_FILENO) + 1, &rfds, NULL, NULL, NULL) == -1)
-			err(EXIT_FAILURE, "cannot select");
-		if(FD_ISSET(ptm, &rfds)) {
-			for(;;) {
-				if((c = getc(fptm)) == EOF) {
-					if(feof(fptm)) {
-						FD_CLR(ptm, &rfds);
-						fflush(fptm);
-						break;
-					}
-					if(errno != EAGAIN)
-						err(EXIT_FAILURE, "cannot read from pty");
-					fflush(stdout);
-					break;
-				}
-				switch(c) {
-				case '\033':
-					parseesc();
-					break;
-				default:
-					putchar(c);
-				}
-			}
-			fflush(stdout);
-		}
-		if(FD_ISSET(STDIN_FILENO, &rfds)) {
-			for(;;) {
-				if((c = getchar()) == EOF) {
-					if(feof(stdin)) {
-						FD_CLR(STDIN_FILENO, &rfds);
-						fflush(fptm);
-						break;
-					}
-					if(errno != EAGAIN)
-						err(EXIT_FAILURE, "cannot read from stdin");
-					fflush(fptm);
-					break;
-				}
-				switch(c) {
-				case ':':
-					parsecmd();
-					break;
-				default:
-					putc(c, fptm);
-				}
-			}
-			fflush(fptm);
-		}
-	}
-	return 0;
-}