GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: bin/ed/glbl.c Lines: 0 87 0.0 %
Date: 2017-11-13 Branches: 0 118 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: glbl.c,v 1.19 2017/04/26 21:25:43 naddy Exp $	*/
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/*	$NetBSD: glbl.c,v 1.2 1995/03/21 09:04:41 cgd Exp $	*/
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/* glob.c: This file contains the global command routines for the ed line
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   editor */
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/*-
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 * Copyright (c) 1993 Andrew Moore, Talke Studio.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/ioctl.h>
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#include <sys/wait.h>
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#include <regex.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "ed.h"
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static int set_active_node(line_t *);
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static line_t *next_active_node(void);
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/* build_active_list:  add line matching a pattern to the global-active list */
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int
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build_active_list(int isgcmd)
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{
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	regex_t *pat;
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	line_t *lp;
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	int n;
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	char *s;
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	char delimiter;
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	if ((delimiter = *ibufp) == ' ' || delimiter == '\n') {
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		seterrmsg("invalid pattern delimiter");
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		return ERR;
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	} else if ((pat = get_compiled_pattern()) == NULL)
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		return ERR;
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	else if (*ibufp == delimiter)
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		ibufp++;
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	clear_active_list();
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	lp = get_addressed_line_node(first_addr);
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	for (n = first_addr; n <= second_addr; n++, lp = lp->q_forw) {
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		if ((s = get_sbuf_line(lp)) == NULL)
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			return ERR;
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		if (isbinary)
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			NUL_TO_NEWLINE(s, lp->len);
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		if ((!regexec(pat, s, 0, NULL, 0)) == isgcmd &&
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		    set_active_node(lp) < 0)
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			return ERR;
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	}
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	return 0;
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}
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/* exec_global: apply command list in the command buffer to the active
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   lines in a range; return command status */
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int
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exec_global(int interact, int gflag)
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{
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	static char *ocmd = NULL;
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	static int ocmdsz = 0;
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	line_t *lp = NULL;
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	int status;
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	int n;
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	char *cmd = NULL;
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#ifdef BACKWARDS
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	if (!interact) {
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		if (!strcmp(ibufp, "\n"))
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			cmd = "p\n";		/* null cmd-list == `p' */
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		else if ((cmd = get_extended_line(&n, 0)) == NULL)
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			return ERR;
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	}
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#else
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	if (!interact && (cmd = get_extended_line(&n, 0)) == NULL)
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		return ERR;
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#endif
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	clear_undo_stack();
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	while ((lp = next_active_node()) != NULL) {
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		if ((current_addr = get_line_node_addr(lp)) < 0)
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			return ERR;
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		if (interact) {
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			/* print current_addr; get a command in global syntax */
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			if (display_lines(current_addr, current_addr, gflag) < 0)
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				return ERR;
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			while ((n = get_tty_line()) > 0 &&
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			    ibuf[n - 1] != '\n')
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				clearerr(stdin);
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			if (n < 0)
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				return ERR;
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			else if (n == 0) {
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				seterrmsg("unexpected end-of-file");
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				return ERR;
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			} else if (n == 1 && !strcmp(ibuf, "\n"))
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				continue;
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			else if (n == 2 && !strcmp(ibuf, "&\n")) {
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				if (cmd == NULL) {
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					seterrmsg("no previous command");
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					return ERR;
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				} else cmd = ocmd;
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			} else if ((cmd = get_extended_line(&n, 0)) == NULL)
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				return ERR;
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			else {
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				REALLOC(ocmd, ocmdsz, n + 1, ERR);
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				memcpy(ocmd, cmd, n + 1);
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				cmd = ocmd;
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			}
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		}
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		ibufp = cmd;
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		for (; *ibufp;)
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			if ((status = extract_addr_range()) < 0 ||
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			    (status = exec_command()) < 0 ||
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			    (status > 0 && (status = display_lines(
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			    current_addr, current_addr, status)) < 0))
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				return status;
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	}
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	return 0;
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}
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static line_t **active_list;	/* list of lines active in a global command */
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static int active_last;		/* index of last active line in active_list */
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static int active_size;		/* size of active_list */
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static int active_ptr;		/* active_list index (non-decreasing) */
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static int active_ndx;		/* active_list index (modulo active_last) */
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/* set_active_node: add a line node to the global-active list */
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static int
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set_active_node(line_t *lp)
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{
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	if (active_last + 1 > active_size) {
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		int ti = active_size;
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		line_t **ts;
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		SPL1();
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		if ((ts = reallocarray(active_list,
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		    (ti += MINBUFSZ), sizeof(line_t **))) == NULL) {
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			perror(NULL);
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			seterrmsg("out of memory");
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			SPL0();
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			return ERR;
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		}
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		active_size = ti;
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		active_list = ts;
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		SPL0();
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	}
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	active_list[active_last++] = lp;
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	return 0;
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}
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/* unset_active_nodes: remove a range of lines from the global-active list */
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void
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unset_active_nodes(line_t *np, line_t *mp)
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{
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	line_t *lp;
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	int i;
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	for (lp = np; lp != mp; lp = lp->q_forw)
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		for (i = 0; i < active_last; i++)
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			if (active_list[active_ndx] == lp) {
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				active_list[active_ndx] = NULL;
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				active_ndx = INC_MOD(active_ndx, active_last - 1);
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				break;
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			} else	active_ndx = INC_MOD(active_ndx, active_last - 1);
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}
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/* next_active_node: return the next global-active line node */
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static line_t *
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next_active_node(void)
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{
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	while (active_ptr < active_last && active_list[active_ptr] == NULL)
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		active_ptr++;
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	return (active_ptr < active_last) ? active_list[active_ptr++] : NULL;
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}
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/* clear_active_list: clear the global-active list */
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void
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clear_active_list(void)
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{
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	SPL1();
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	active_size = active_last = active_ptr = active_ndx = 0;
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	free(active_list);
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	active_list = NULL;
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	SPL0();
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}