common.c

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

/*	$NetBSD: common.c,v 1.16 2003/08/07 16:44:30 agc Exp $	*/

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <config.h>

/*
 * common.c: Common Editor functions
 */
#include "el.h"

/* ed_end_of_file():
 *	Indicate end of file
 *	[^D]
 */
protected el_action_t
/*ARGSUSED*/
ed_end_of_file(EditLine *el, int c __attribute__((__unused__)))
{

	re_goto_bottom(el);
	*el->el_line.lastchar = '\0';
	return (CC_EOF);
}


/* ed_insert():
 *	Add character to the line
 *	Insert a character [bound to all insert keys]
 */
protected el_action_t
ed_insert(EditLine *el, int c)
{
	int count = el->el_state.argument;

	if (c == '\0')
		return (CC_ERROR);

	if (el->el_line.lastchar + el->el_state.argument >=
	    el->el_line.limit) {
		/* end of buffer space, try to allocate more */
		if (!ch_enlargebufs(el, (size_t) count))
			return CC_ERROR;	/* error allocating more */
	}

	if (count == 1) {
		if (el->el_state.inputmode == MODE_INSERT
		    || el->el_line.cursor >= el->el_line.lastchar)
			c_insert(el, 1);

		*el->el_line.cursor++ = c;
		re_fastaddc(el);		/* fast refresh for one char. */
	} else {
		if (el->el_state.inputmode != MODE_REPLACE_1)
			c_insert(el, el->el_state.argument);

		while (count-- && el->el_line.cursor < el->el_line.lastchar)
			*el->el_line.cursor++ = c;
		re_refresh(el);
	}

	if (el->el_state.inputmode == MODE_REPLACE_1)
		return vi_command_mode(el, 0);

	return (CC_NORM);
}


/* ed_delete_prev_word():
 *	Delete from beginning of current word to cursor
 *	[M-^?] [^W]
 */
protected el_action_t
/*ARGSUSED*/
ed_delete_prev_word(EditLine *el, int c __attribute__((__unused__)))
{
	char *cp, *p, *kp;

	if (el->el_line.cursor == el->el_line.buffer)
		return (CC_ERROR);

	cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
	    el->el_state.argument, ce__isword);

	for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
		*kp++ = *p;
	el->el_chared.c_kill.last = kp;

	c_delbefore(el, el->el_line.cursor - cp);	/* delete before dot */
	el->el_line.cursor = cp;
	if (el->el_line.cursor < el->el_line.buffer)
		el->el_line.cursor = el->el_line.buffer; /* bounds check */
	return (CC_REFRESH);
}


/* ed_delete_next_char():
 *	Delete character under cursor
 *	[^D] [x]
 */
protected el_action_t
/*ARGSUSED*/
ed_delete_next_char(EditLine *el, int c __attribute__((__unused__)))
{
#ifdef notdef			/* XXX */
#define	EL	el->el_line
	(void) fprintf(el->el_errlfile,
	    "\nD(b: %x(%s)  c: %x(%s) last: %x(%s) limit: %x(%s)\n",
	    EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
	    EL.lastchar, EL.limit, EL.limit);
#endif
	if (el->el_line.cursor == el->el_line.lastchar) {
			/* if I'm at the end */
		if (el->el_map.type == MAP_VI) {
			if (el->el_line.cursor == el->el_line.buffer) {
				/* if I'm also at the beginning */
#ifdef KSHVI
				return (CC_ERROR);
#else
				term_overwrite(el, STReof, 4);
					/* then do a EOF */
				term__flush();
				return (CC_EOF);
#endif
			} else {
#ifdef KSHVI
				el->el_line.cursor--;
#else
				return (CC_ERROR);
#endif
			}
		} else {
			if (el->el_line.cursor != el->el_line.buffer)
				el->el_line.cursor--;
			else
				return (CC_ERROR);
		}
	}
	c_delafter(el, el->el_state.argument);	/* delete after dot */
	if (el->el_line.cursor >= el->el_line.lastchar &&
	    el->el_line.cursor > el->el_line.buffer)
			/* bounds check */
		el->el_line.cursor = el->el_line.lastchar - 1;
	return (CC_REFRESH);
}


/* ed_kill_line():
 *	Cut to the end of line
 *	[^K] [^K]
 */
protected el_action_t
/*ARGSUSED*/
ed_kill_line(EditLine *el, int c __attribute__((__unused__)))
{
	char *kp, *cp;

	cp = el->el_line.cursor;
	kp = el->el_chared.c_kill.buf;
	while (cp < el->el_line.lastchar)
		*kp++ = *cp++;	/* copy it */
	el->el_chared.c_kill.last = kp;
			/* zap! -- delete to end */
	el->el_line.lastchar = el->el_line.cursor;
	return (CC_REFRESH);
}


/* ed_move_to_end():
 *	Move cursor to the end of line
 *	[^E] [^E]
 */
protected el_action_t
/*ARGSUSED*/
ed_move_to_end(EditLine *el, int c __attribute__((__unused__)))
{

	el->el_line.cursor = el->el_line.lastchar;
	if (el->el_map.type == MAP_VI) {
#ifdef VI_MOVE
		el->el_line.cursor--;
#endif
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return (CC_REFRESH);
		}
	}
	return (CC_CURSOR);
}


/* ed_move_to_beg():
 *	Move cursor to the beginning of line
 *	[^A] [^A]
 */
protected el_action_t
/*ARGSUSED*/
ed_move_to_beg(EditLine *el, int c __attribute__((__unused__)))
{

	el->el_line.cursor = el->el_line.buffer;

	if (el->el_map.type == MAP_VI) {
			/* We want FIRST non space character */
		while (isspace((unsigned char) *el->el_line.cursor))
			el->el_line.cursor++;
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return (CC_REFRESH);
		}
	}
	return (CC_CURSOR);
}


/* ed_transpose_chars():
 *	Exchange the character to the left of the cursor with the one under it
 *	[^T] [^T]
 */
protected el_action_t
ed_transpose_chars(EditLine *el, int c)
{

	if (el->el_line.cursor < el->el_line.lastchar) {
		if (el->el_line.lastchar <= &el->el_line.buffer[1])
			return (CC_ERROR);
		else
			el->el_line.cursor++;
	}
	if (el->el_line.cursor > &el->el_line.buffer[1]) {
		/* must have at least two chars entered */
		c = el->el_line.cursor[-2];
		el->el_line.cursor[-2] = el->el_line.cursor[-1];
		el->el_line.cursor[-1] = c;
		return (CC_REFRESH);
	} else
		return (CC_ERROR);
}


/* ed_next_char():
 *	Move to the right one character
 *	[^F] [^F]
 */
protected el_action_t
/*ARGSUSED*/
ed_next_char(EditLine *el, int c __attribute__((__unused__)))
{
	char *lim = el->el_line.lastchar;

	if (el->el_line.cursor >= lim ||
	    (el->el_line.cursor == lim - 1 &&
	    el->el_map.type == MAP_VI &&
	    el->el_chared.c_vcmd.action == NOP))
		return (CC_ERROR);

	el->el_line.cursor += el->el_state.argument;
	if (el->el_line.cursor > lim)
		el->el_line.cursor = lim;

	if (el->el_map.type == MAP_VI)
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return (CC_REFRESH);
		}
	return (CC_CURSOR);
}


/* ed_prev_word():
 *	Move to the beginning of the current word
 *	[M-b] [b]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_word(EditLine *el, int c __attribute__((__unused__)))
{

	if (el->el_line.cursor == el->el_line.buffer)
		return (CC_ERROR);

	el->el_line.cursor = c__prev_word(el->el_line.cursor,
	    el->el_line.buffer,
	    el->el_state.argument,
	    ce__isword);

	if (el->el_map.type == MAP_VI)
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return (CC_REFRESH);
		}
	return (CC_CURSOR);
}


/* ed_prev_char():
 *	Move to the left one character
 *	[^B] [^B]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_char(EditLine *el, int c __attribute__((__unused__)))
{

	if (el->el_line.cursor > el->el_line.buffer) {
		el->el_line.cursor -= el->el_state.argument;
		if (el->el_line.cursor < el->el_line.buffer)
			el->el_line.cursor = el->el_line.buffer;

		if (el->el_map.type == MAP_VI)
			if (el->el_chared.c_vcmd.action != NOP) {
				cv_delfini(el);
				return (CC_REFRESH);
			}
		return (CC_CURSOR);
	} else
		return (CC_ERROR);
}


/* ed_quoted_insert():
 *	Add the next character typed verbatim
 *	[^V] [^V]
 */
protected el_action_t
ed_quoted_insert(EditLine *el, int c)
{
	int num;
	char tc;

	tty_quotemode(el);
	num = el_getc(el, &tc);
	c = (unsigned char) tc;
	tty_noquotemode(el);
	if (num == 1)
		return (ed_insert(el, c));
	else
		return (ed_end_of_file(el, 0));
}


/* ed_digit():
 *	Adds to argument or enters a digit
 */
protected el_action_t
ed_digit(EditLine *el, int c)
{

	if (!isdigit(c))
		return (CC_ERROR);

	if (el->el_state.doingarg) {
			/* if doing an arg, add this in... */
		if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
			el->el_state.argument = c - '0';
		else {
			if (el->el_state.argument > 1000000)
				return (CC_ERROR);
			el->el_state.argument =
			    (el->el_state.argument * 10) + (c - '0');
		}
		return (CC_ARGHACK);
	}

	return ed_insert(el, c);
}


/* ed_argument_digit():
 *	Digit that starts argument
 *	For ESC-n
 */
protected el_action_t
ed_argument_digit(EditLine *el, int c)
{

	if (!isdigit(c))
		return (CC_ERROR);

	if (el->el_state.doingarg) {
		if (el->el_state.argument > 1000000)
			return (CC_ERROR);
		el->el_state.argument = (el->el_state.argument * 10) +
		    (c - '0');
	} else {		/* else starting an argument */
		el->el_state.argument = c - '0';
		el->el_state.doingarg = 1;
	}
	return (CC_ARGHACK);
}


/* ed_unassigned():
 *	Indicates unbound character
 *	Bound to keys that are not assigned
 */
protected el_action_t
/*ARGSUSED*/
ed_unassigned(EditLine *el, int c __attribute__((__unused__)))
{

	return (CC_ERROR);
}


/**
 ** TTY key handling.
 **/

/* ed_tty_sigint():
 *	Tty interrupt character
 *	[^C]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_sigint(EditLine *el __attribute__((__unused__)), 
	      int c __attribute__((__unused__)))
{

	return (CC_NORM);
}


/* ed_tty_dsusp():
 *	Tty delayed suspend character
 *	[^Y]
 */
protected el_action_t