Flatten all tags of the dist tree of less.

1 files changed, 0 insertions, 369 deletions

diff --git a/contrib/less/lsystem.c b/contrib/less/lsystem.c
deleted file mode 100644
index 512bea3..0000000
--- a/contrib/less/lsystem.c
+++ /dev/null
@@ -1,369 +0,0 @@
-/*
- * Copyright (C) 1984-2007  Mark Nudelman
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Less License, as specified in the README file.
- *
- * For more information about less, or for information on how to 
- * contact the author, see the README file.
- */
-
-
-/*
- * Routines to execute other programs.
- * Necessarily very OS dependent.
- */
-
-#include "less.h"
-#include <signal.h>
-#include "position.h"
-
-#if MSDOS_COMPILER
-#include <dos.h>
-#ifdef _MSC_VER
-#include <direct.h>
-#define setdisk(n) _chdrive((n)+1)
-#else
-#include <dir.h>
-#endif
-#endif
-
-extern int screen_trashed;
-extern IFILE curr_ifile;
-
-
-#if HAVE_SYSTEM
-
-/*
- * Pass the specified command to a shell to be executed.
- * Like plain "system()", but handles resetting terminal modes, etc.
- */
-	public void
-lsystem(cmd, donemsg)
-	char *cmd;
-	char *donemsg;
-{
-	register int inp;
-#if HAVE_SHELL
-	register char *shell;
-	register char *p;
-#endif
-	IFILE save_ifile;
-#if MSDOS_COMPILER
-	char cwd[FILENAME_MAX+1];
-#endif
-
-	/*
-	 * Print the command which is to be executed,
-	 * unless the command starts with a "-".
-	 */
-	if (cmd[0] == '-')
-		cmd++;
-	else
-	{
-		clear_bot();
-		putstr("!");
-		putstr(cmd);
-		putstr("\n");
-	}
-
-#if MSDOS_COMPILER
-	/*
-	 * Working directory is global on MSDOS.
-	 * The child might change the working directory, so we
-	 * must save and restore CWD across calls to "system",
-	 * or else we won't find our file when we return and
-	 * try to "reedit_ifile" it.
-	 */
-	getcwd(cwd, FILENAME_MAX);
-#endif
-
-	/*
-	 * Close the current input file.
-	 */
-	save_ifile = save_curr_ifile();
-	(void) edit_ifile(NULL_IFILE);
-
-	/*
-	 * De-initialize the terminal and take out of raw mode.
-	 */
-	deinit();
-	flush();	/* Make sure the deinit chars get out */
-	raw_mode(0);
-#if MSDOS_COMPILER==WIN32C
-	close_getchr();
-#endif
-
-	/*
-	 * Restore signals to their defaults.
-	 */
-	init_signals(0);
-
-#if HAVE_DUP
-	/*
-	 * Force standard input to be the user's terminal
-	 * (the normal standard input), even if less's standard input 
-	 * is coming from a pipe.
-	 */
-	inp = dup(0);
-	close(0);
-#if OS2
-	/* The __open() system call translates "/dev/tty" to "con". */
-	if (__open("/dev/tty", OPEN_READ) < 0)
-#else
-	if (open("/dev/tty", OPEN_READ) < 0)
-#endif
-		dup(inp);
-#endif
-
-	/*
-	 * Pass the command to the system to be executed.
-	 * If we have a SHELL environment variable, use
-	 * <$SHELL -c "command"> instead of just <command>.
-	 * If the command is empty, just invoke a shell.
-	 */
-#if HAVE_SHELL
-	p = NULL;
-	if ((shell = lgetenv("SHELL")) != NULL && *shell != '\0')
-	{
-		if (*cmd == '\0')
-			p = save(shell);
-		else
-		{
-			char *esccmd = shell_quote(cmd);
-			if (esccmd != NULL)
-			{
-				int len = strlen(shell) + strlen(esccmd) + 5;
-				p = (char *) ecalloc(len, sizeof(char));
-				SNPRINTF3(p, len, "%s %s %s", shell, shell_coption(), esccmd);
-				free(esccmd);
-			}
-		}
-	}
-	if (p == NULL)
-	{
-		if (*cmd == '\0')
-			p = save("sh");
-		else
-			p = save(cmd);
-	}
-	system(p);
-	free(p);
-#else
-#if MSDOS_COMPILER==DJGPPC
-	/*
-	 * Make stdin of the child be in cooked mode.
-	 */
-	setmode(0, O_TEXT);
-	/*
-	 * We don't need to catch signals of the child (it
-	 * also makes trouble with some DPMI servers).
-	 */
-	__djgpp_exception_toggle();
-  	system(cmd);
-	__djgpp_exception_toggle();
-#else
-	system(cmd);
-#endif
-#endif
-
-#if HAVE_DUP
-	/*
-	 * Restore standard input, reset signals, raw mode, etc.
-	 */
-	close(0);
-	dup(inp);
-	close(inp);
-#endif
-
-#if MSDOS_COMPILER==WIN32C
-	open_getchr();
-#endif
-	init_signals(1);
-	raw_mode(1);
-	if (donemsg != NULL)
-	{
-		putstr(donemsg);
-		putstr("  (press RETURN)");
-		get_return();
-		putchr('\n');
-		flush();
-	}
-	init();
-	screen_trashed = 1;
-
-#if MSDOS_COMPILER
-	/*
-	 * Restore the previous directory (possibly
-	 * changed by the child program we just ran).
-	 */
-	chdir(cwd);
-#if MSDOS_COMPILER != DJGPPC
-	/*
-	 * Some versions of chdir() don't change to the drive
-	 * which is part of CWD.  (DJGPP does this in chdir.)
-	 */
-	if (cwd[1] == ':')
-	{
-		if (cwd[0] >= 'a' && cwd[0] <= 'z')
-			setdisk(cwd[0] - 'a');
-		else if (cwd[0] >= 'A' && cwd[0] <= 'Z')
-			setdisk(cwd[0] - 'A');
-	}
-#endif
-#endif
-
-	/*
-	 * Reopen the current input file.
-	 */
-	reedit_ifile(save_ifile);
-
-#if defined(SIGWINCH) || defined(SIGWIND)
-	/*
-	 * Since we were ignoring window change signals while we executed
-	 * the system command, we must assume the window changed.
-	 * Warning: this leaves a signal pending (in "sigs"),
-	 * so psignals() should be called soon after lsystem().
-	 */
-	winch(0);
-#endif
-}
-
-#endif
-
-#if PIPEC
-
-/*
- * Pipe a section of the input file into the given shell command.
- * The section to be piped is the section "between" the current
- * position and the position marked by the given letter.
- *
- * If the mark is after the current screen, the section between
- * the top line displayed and the mark is piped.
- * If the mark is before the current screen, the section between
- * the mark and the bottom line displayed is piped.
- * If the mark is on the current screen, or if the mark is ".",
- * the whole current screen is piped.
- */
-	public int
-pipe_mark(c, cmd)
-	int c;
-	char *cmd;
-{
-	POSITION mpos, tpos, bpos;
-
-	/*
-	 * mpos = the marked position.
-	 * tpos = top of screen.
-	 * bpos = bottom of screen.
-	 */
-	mpos = markpos(c);
-	if (mpos == NULL_POSITION)
-		return (-1);
-	tpos = position(TOP);
-	if (tpos == NULL_POSITION)
-		tpos = ch_zero();
-	bpos = position(BOTTOM);
-
- 	if (c == '.') 
- 		return (pipe_data(cmd, tpos, bpos));
- 	else if (mpos <= tpos)
- 		return (pipe_data(cmd, mpos, bpos));
- 	else if (bpos == NULL_POSITION)
- 		return (pipe_data(cmd, tpos, bpos));
- 	else
- 		return (pipe_data(cmd, tpos, mpos));
-}
-
-/*
- * Create a pipe to the given shell command.
- * Feed it the file contents between the positions spos and epos.
- */
-	public int
-pipe_data(cmd, spos, epos)
-	char *cmd;
-	POSITION spos;
-	POSITION epos;
-{
-	register FILE *f;
-	register int c;
-	extern FILE *popen();
-
-	/*
-	 * This is structured much like lsystem().
-	 * Since we're running a shell program, we must be careful
-	 * to perform the necessary deinitialization before running
-	 * the command, and reinitialization after it.
-	 */
-	if (ch_seek(spos) != 0)
-	{
-		error("Cannot seek to start position", NULL_PARG);
-		return (-1);
-	}
-
-	if ((f = popen(cmd, "w")) == NULL)
-	{
-		error("Cannot create pipe", NULL_PARG);
-		return (-1);
-	}
-	clear_bot();
-	putstr("!");
-	putstr(cmd);
-	putstr("\n");
-
-	deinit();
-	flush();
-	raw_mode(0);
-	init_signals(0);
-#if MSDOS_COMPILER==WIN32C
-	close_getchr();
-#endif
-#ifdef SIGPIPE
-	LSIGNAL(SIGPIPE, SIG_IGN);
-#endif
-
-	c = EOI;
-	while (epos == NULL_POSITION || spos++ <= epos)
-	{
-		/*
-		 * Read a character from the file and give it to the pipe.
-		 */
-		c = ch_forw_get();
-		if (c == EOI)
-			break;
-		if (putc(c, f) == EOF)
-			break;
-	}
-
-	/*
-	 * Finish up the last line.
-	 */
- 	while (c != '\n' && c != EOI ) 
- 	{
- 		c = ch_forw_get();
- 		if (c == EOI)
- 			break;
- 		if (putc(c, f) == EOF)
- 			break;
- 	}
-
-	pclose(f);
-
-#ifdef SIGPIPE
-	LSIGNAL(SIGPIPE, SIG_DFL);
-#endif
-#if MSDOS_COMPILER==WIN32C
-	open_getchr();
-#endif
-	init_signals(1);
-	raw_mode(1);
-	init();
-	screen_trashed = 1;
-#if defined(SIGWINCH) || defined(SIGWIND)
-	/* {{ Probably don't need this here. }} */
-	winch(0);
-#endif
-	return (0);
-}
-
-#endif