exclude.c - android_external_rsync - Gitiles

 /* -*- c-file-style: "linux" -*-
  *
  * Copyright (C) 1996-2001 by Andrew Tridgell <tridge@samba.org>
  * Copyright (C) 1996 by Paul Mackerras
  * Copyright (C) 2002 by Martin Pool
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */

 /* a lot of this stuff was originally derived from GNU tar, although
    it has now changed so much that it is hard to tell :) */

 /* include/exclude cluestick added by Martin Pool <mbp@samba.org> */

 #include "rsync.h"

 extern int verbose;

 struct exclude_struct **exclude_list;
 struct exclude_struct **local_exclude_list;
 struct exclude_struct **server_exclude_list;
 char *exclude_path_prefix = NULL;

 /** Build an exclude structure given a exclude pattern */
 static struct exclude_struct *make_exclude(const char *pattern, int include)
 {
 	struct exclude_struct *ret;
 	char *cp;
 	int pat_len;

 	ret = (struct exclude_struct *)malloc(sizeof(*ret));
 	if (!ret) out_of_memory("make_exclude");

 	memset(ret, 0, sizeof(*ret));

 	if (strncmp(pattern,"- ",2) == 0) {
 		pattern += 2;
 	} else if (strncmp(pattern,"+ ",2) == 0) {
 		ret->include = 1;
 		pattern += 2;
 	} else {
 		ret->include = include;
 	}

 	if (exclude_path_prefix)
 		ret->match_flags |= MATCHFLG_ABS_PATH;
 	if (exclude_path_prefix && *pattern == '/') {
 		ret->pattern = malloc(strlen(exclude_path_prefix)
 				+ strlen(pattern) + 1);
 		if (!ret->pattern) out_of_memory("make_exclude");
 		sprintf(ret->pattern, "%s%s", exclude_path_prefix, pattern);
 	}
 	else {
 		ret->pattern = strdup(pattern);
 		if (!ret->pattern) out_of_memory("make_exclude");
 	}

 	if (strpbrk(pattern, "*[?")) {
 		ret->match_flags |= MATCHFLG_WILD;
 		if (strstr(pattern, "**")) {
 			ret->match_flags |= MATCHFLG_WILD2;
 			/* If the pattern starts with **, note that. */
 			if (*pattern == '*' && pattern[1] == '*')
 				ret->match_flags |= MATCHFLG_WILD2_PREFIX;
 		}
 	}

 	pat_len = strlen(ret->pattern);
 	if (pat_len > 1 && ret->pattern[pat_len-1] == '/') {
 		ret->pattern[pat_len-1] = 0;
 		ret->directory = 1;
 	}

 	for (cp = ret->pattern; (cp = strchr(cp, '/')) != NULL; cp++)
 		ret->slash_cnt++;

 	return ret;
 }

 static void free_exclude(struct exclude_struct *ex)
 {
 	free(ex->pattern);
 	memset(ex,0,sizeof(*ex));
 	free(ex);
 }


 void free_exclude_list(struct exclude_struct ***listp)
 {
 	struct exclude_struct **list = *listp;

 	if (verbose > 2)
 		rprintf(FINFO,"clearing exclude list\n");

 	if (!list)
 		return;

 	while (*list)
 		free_exclude(*list++);

 	free(*listp);
 	*listp = NULL;
 }

 static int check_one_exclude(char *name, struct exclude_struct *ex,
                              int name_is_dir)
 {
 	char *p;
 	int match_start = 0;
 	char *pattern = ex->pattern;

 	/* If the pattern does not have any slashes AND it does not have
 	 * a "**" (which could match a slash), then we just match the
 	 * name portion of the path. */
 	if (!ex->slash_cnt && !(ex->match_flags & MATCHFLG_WILD2)) {
 		if ((p = strrchr(name,'/')) != NULL)
 			name = p+1;
 	}
 	else if ((ex->match_flags & MATCHFLG_ABS_PATH) && *name != '/') {
 		static char full_name[MAXPATHLEN];
 		extern char curr_dir[];
 		int plus = curr_dir[1] == '\0'? 1 : 0;
 		snprintf(full_name, sizeof full_name,
 			 "%s/%s", curr_dir+plus, name);
 		name = full_name;
 	}

 	if (!name[0]) return 0;

 	if (ex->directory && !name_is_dir) return 0;

 	if (*pattern == '/') {
 		match_start = 1;
 		pattern++;
 		if (*name == '/')
 			name++;
 	}

 	if (ex->match_flags & MATCHFLG_WILD) {
 		/* A non-anchored match with an infix slash and no "**"
 		 * needs to match the last slash_cnt+1 name elements. */
 		if (!match_start && ex->slash_cnt &&
 		    !(ex->match_flags & MATCHFLG_WILD2)) {
 			int cnt = ex->slash_cnt + 1;
 			for (p = name + strlen(name) - 1; p >= name; p--) {
 				if (*p == '/' && !--cnt)
 					break;
 			}
 			name = p+1;
 		}
 		if (wildmatch(pattern, name))
 			return 1;
 		if (ex->match_flags & MATCHFLG_WILD2_PREFIX) {
 			/* If the **-prefixed pattern has a '/' as the next
 			 * character, then try to match the rest of the
 			 * pattern at the root. */
 			if (pattern[2] == '/' && wildmatch(pattern+3, name))
 				return 1;
 		}
 		else if (!match_start && ex->match_flags & MATCHFLG_WILD2) {
 			/* A non-anchored match with an infix or trailing "**"
 			 * (but not a prefixed "**") needs to try matching
 			 * after every slash. */
 			while ((name = strchr(name, '/')) != NULL) {
 				name++;
 				if (wildmatch(pattern, name))
 					return 1;
 			}
 		}
 	} else if (match_start) {
 		if (strcmp(name,pattern) == 0)
 			return 1;
 	} else {
 		int l1 = strlen(name);
 		int l2 = strlen(pattern);
 		if (l2 <= l1 &&
 		    strcmp(name+(l1-l2),pattern) == 0 &&
 		    (l1==l2 || name[l1-(l2+1)] == '/')) {
 			return 1;
 		}
 	}

 	return 0;
 }


 static void report_exclude_result(char const *name,
                                   struct exclude_struct const *ent,
                                   int name_is_dir)
 {
 	/* If a trailing slash is present to match only directories,
 	 * then it is stripped out by make_exclude.  So as a special
 	 * case we add it back in here. */

 	if (verbose >= 2)
 		rprintf(FINFO, "%s %s %s because of pattern %s%s\n",
 			ent->include ? "including" : "excluding",
 			name_is_dir ? "directory" : "file",
 			name, ent->pattern,
 			ent->directory ? "/" : "");
 }


 /*
  * Return true if file NAME is defined to be excluded by either
  * LOCAL_EXCLUDE_LIST or the globals EXCLUDE_LIST.
  */
 int check_exclude(struct exclude_struct **list, char *name, int name_is_dir)
 {
 	struct exclude_struct *ent;

 	while ((ent = *list++) != NULL) {
 		if (check_one_exclude(name, ent, name_is_dir)) {
 			report_exclude_result(name, ent, name_is_dir);
 			return !ent->include;
 		}
 	}

 	return 0;
 }


 void add_exclude(struct exclude_struct ***listp, const char *pattern, int include)
 {
 	struct exclude_struct **list = *listp;
 	int len = 0;

 	if (*pattern == '!' && !pattern[1]) {
 	    free_exclude_list(listp);
 	    return;
 	}

 	if (list)
 		for (; list[len]; len++) {}

 	list = *listp = (struct exclude_struct **)Realloc(list,sizeof(struct exclude_struct *)*(len+2));

 	if (!list || !(list[len] = make_exclude(pattern, include)))
 		out_of_memory("add_exclude");

 	if (verbose > 2) {
 		rprintf(FINFO,"add_exclude(%s,%s)\n",pattern,
 			include ? "include" : "exclude");
 	}

 	list[len+1] = NULL;
 }


 void add_exclude_file(struct exclude_struct ***listp, const char *fname,
 		      int fatal, int include)
 {
 	int fd;
 	char line[MAXPATHLEN];
 	char *eob = line + MAXPATHLEN - 1;
 	extern int eol_nulls;

 	if (!fname || !*fname)
 		return;

 	if (*fname != '-' || fname[1])
 		fd = open(fname, O_RDONLY|O_BINARY);
 	else
 		fd = 0;
 	if (fd < 0) {
 		if (fatal) {
 			rsyserr(FERROR, errno,
 				"failed to open %s file %s",
 				include ? "include" : "exclude",
 				fname);
 			exit_cleanup(RERR_FILEIO);
 		}
 		return;
 	}

 	while (1) {
 		char ch, *s = line;
 		int cnt;
 		while (1) {
 			if ((cnt = read(fd, &ch, 1)) <= 0) {
 				if (cnt < 0 && errno == EINTR)
 					continue;
 				break;
 			}
 			if (eol_nulls? !ch : (ch == '\n' || ch == '\r'))
 				break;
 			if (s < eob)
 				*s++ = ch;
 		}
 		*s = '\0';
 		if (*line && *line != ';' && *line != '#') {
 			/* Skip lines starting with semicolon or pound.
 			 * It probably wouldn't cause any harm to not skip
 			 * them but there's no need to save them. */
 			add_exclude(listp, line, include);
 		}
 		if (cnt <= 0)
 			break;
 	}
 	close(fd);
 }


 void send_exclude_list(int f)
 {
 	int i;
 	extern int remote_version;
 	extern int list_only, recurse;

 	/* This is a complete hack - blame Rusty.
 	 *
 	 * FIXME: This pattern shows up in the output of
 	 * report_exclude_result(), which is not ideal. */
 	if (list_only && !recurse)
 		add_exclude(&exclude_list, "/*/*", ADD_EXCLUDE);

 	if (!exclude_list) {
 		write_int(f,0);
 		return;
 	}

 	for (i=0;exclude_list[i];i++) {
 		int l;
 		char pattern[MAXPATHLEN];

 		strlcpy(pattern,exclude_list[i]->pattern,sizeof(pattern));
 		if (exclude_list[i]->directory) strlcat(pattern,"/", sizeof(pattern));

 		l = strlen(pattern);
 		if (l == 0) continue;
 		if (exclude_list[i]->include) {
 			if (remote_version < 19) {
 				rprintf(FERROR,"remote rsync does not support include syntax - aborting\n");
 				exit_cleanup(RERR_UNSUPPORTED);
 			}
 			write_int(f,l+2);
 			write_buf(f,"+ ",2);
 		} else {
 			write_int(f,l);
 		}
 		write_buf(f,pattern,l);
 	}

 	write_int(f,0);
 }


 void recv_exclude_list(int f)
 {
 	char line[MAXPATHLEN];
 	unsigned int l;

 	while ((l=read_int(f))) {
 		if (l >= MAXPATHLEN) overflow("recv_exclude_list");
 		read_sbuf(f,line,l);
 		add_exclude(&exclude_list, line, ADD_EXCLUDE);
 	}
 }

 /* Get the next include/exclude arg from the string. It works in a similar way
 ** to strtok - initially an arg is sent over, from then on NULL. This
 ** routine takes into account any +/- in the strings and does not
 ** consider the space following it as a delimeter.
 */
 char *get_exclude_tok(char *p)
 {
 	static char *s;
 	static int more;
 	char *t;

 	if (p) {
 		s=p;
 		if (*p)
 			more=1;
 	}

 	if (!more)
 		return(NULL);

 	/* Skip over any initial spaces */
 	while (isspace(* (unsigned char *) s))
 		s++;

 	/* Are we at the end of the string? */
 	if (*s) {
 		/* remember the beginning of the token */
 		t=s;

 		/* Is this a '+' or '-' followed by a space (not whitespace)? */
 		if ((*s=='+' || *s=='-') && *(s+1)==' ')
 			s+=2;

 		/* Skip to the next space or the end of the string */
 		while (!isspace(* (unsigned char *) s) && *s != '\0')
 			s++;
 	} else {
 		t=NULL;
 	}

 	/* Have we reached the end of the string? */
 	if (*s)
 		*s++='\0';
 	else
 		more=0;
 	return(t);
 }


 void add_exclude_line(struct exclude_struct ***listp,
 		      const char *line, int include)
 {
 	char *tok, *p;
 	if (!line || !*line) return;
 	p = strdup(line);
 	if (!p) out_of_memory("add_exclude_line");
 	for (tok=get_exclude_tok(p); tok; tok=get_exclude_tok(NULL))
 		add_exclude(listp, tok, include);
 	free(p);
 }


 static char *cvs_ignore_list[] = {
   "RCS/", "SCCS/", "CVS/", ".svn/", "CVS.adm", "RCSLOG", "cvslog.*",
   "tags", "TAGS", ".make.state", ".nse_depinfo",
   "*~", "#*", ".#*", ", *", "*.old", "*.bak", "*.BAK", "*.orig",
   "*.rej", ".del-*", "*.a", "*.o", "*.obj", "*.so", "*.Z", "*.elc", "*.ln",
   "core", NULL};


 void add_cvs_excludes(void)
 {
 	char fname[MAXPATHLEN];
 	char *p;
 	int i;

 	for (i=0; cvs_ignore_list[i]; i++)
 		add_exclude(&exclude_list, cvs_ignore_list[i], ADD_EXCLUDE);

 	if ((p=getenv("HOME")) && strlen(p) < (MAXPATHLEN-12)) {
 		snprintf(fname,sizeof(fname), "%s/.cvsignore",p);
 		add_exclude_file(&exclude_list,fname,MISSING_OK,ADD_EXCLUDE);
 	}

 	add_exclude_line(&exclude_list, getenv("CVSIGNORE"), ADD_EXCLUDE);
 }
	/* -- c-file-style: "linux" --
	*
	* Copyright (C) 1996-2001 by Andrew Tridgell <tridge@samba.org>
	* Copyright (C) 1996 by Paul Mackerras
	* Copyright (C) 2002 by Martin Pool
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	*/

	/* a lot of this stuff was originally derived from GNU tar, although
	it has now changed so much that it is hard to tell :) */

	/* include/exclude cluestick added by Martin Pool <mbp@samba.org> */

	#include "rsync.h"

	extern int verbose;

	struct exclude_struct **exclude_list;
	struct exclude_struct **local_exclude_list;
	struct exclude_struct **server_exclude_list;
	char *exclude_path_prefix = NULL;

	/** Build an exclude structure given a exclude pattern */
	static struct exclude_struct make_exclude(const char pattern, int include)
	{
	struct exclude_struct *ret;
	char *cp;
	int pat_len;

	ret = (struct exclude_struct )malloc(sizeof(ret));
	if (!ret) out_of_memory("make_exclude");

	memset(ret, 0, sizeof(*ret));

	if (strncmp(pattern,"- ",2) == 0) {
	pattern += 2;
	} else if (strncmp(pattern,"+ ",2) == 0) {
	ret->include = 1;
	pattern += 2;
	} else {
	ret->include = include;
	}

	if (exclude_path_prefix)
	ret->match_flags \|= MATCHFLG_ABS_PATH;
	if (exclude_path_prefix && *pattern == '/') {
	ret->pattern = malloc(strlen(exclude_path_prefix)
	+ strlen(pattern) + 1);
	if (!ret->pattern) out_of_memory("make_exclude");
	sprintf(ret->pattern, "%s%s", exclude_path_prefix, pattern);
	}
	else {
	ret->pattern = strdup(pattern);
	if (!ret->pattern) out_of_memory("make_exclude");
	}

	if (strpbrk(pattern, "*[?")) {
	ret->match_flags \|= MATCHFLG_WILD;
	if (strstr(pattern, "**")) {
	ret->match_flags \|= MATCHFLG_WILD2;
	/* If the pattern starts with *, note that. /
	if (pattern == '' && pattern[1] == '*')
	ret->match_flags \|= MATCHFLG_WILD2_PREFIX;
	}
	}

	pat_len = strlen(ret->pattern);
	if (pat_len > 1 && ret->pattern[pat_len-1] == '/') {
	ret->pattern[pat_len-1] = 0;
	ret->directory = 1;
	}

	for (cp = ret->pattern; (cp = strchr(cp, '/')) != NULL; cp++)
	ret->slash_cnt++;

	return ret;
	}

	static void free_exclude(struct exclude_struct *ex)
	{
	free(ex->pattern);
	memset(ex,0,sizeof(*ex));
	free(ex);
	}


	void free_exclude_list(struct exclude_struct ***listp)
	{
	struct exclude_struct *list = listp;

	if (verbose > 2)
	rprintf(FINFO,"clearing exclude list\n");

	if (!list)
	return;

	while (*list)
	free_exclude(*list++);

	free(*listp);
	*listp = NULL;
	}

	static int check_one_exclude(char name, struct exclude_struct ex,
	int name_is_dir)
	{
	char *p;
	int match_start = 0;
	char *pattern = ex->pattern;

	/* If the pattern does not have any slashes AND it does not have
	* a "**" (which could match a slash), then we just match the
	* name portion of the path. */
	if (!ex->slash_cnt && !(ex->match_flags & MATCHFLG_WILD2)) {
	if ((p = strrchr(name,'/')) != NULL)
	name = p+1;
	}
	else if ((ex->match_flags & MATCHFLG_ABS_PATH) && *name != '/') {
	static char full_name[MAXPATHLEN];
	extern char curr_dir[];
	int plus = curr_dir[1] == '\0'? 1 : 0;
	snprintf(full_name, sizeof full_name,
	"%s/%s", curr_dir+plus, name);
	name = full_name;
	}

	if (!name[0]) return 0;

	if (ex->directory && !name_is_dir) return 0;

	if (*pattern == '/') {
	match_start = 1;
	pattern++;
	if (*name == '/')
	name++;
	}

	if (ex->match_flags & MATCHFLG_WILD) {
	/* A non-anchored match with an infix slash and no "**"
	* needs to match the last slash_cnt+1 name elements. */
	if (!match_start && ex->slash_cnt &&
	!(ex->match_flags & MATCHFLG_WILD2)) {
	int cnt = ex->slash_cnt + 1;
	for (p = name + strlen(name) - 1; p >= name; p--) {
	if (*p == '/' && !--cnt)
	break;
	}
	name = p+1;
	}
	if (wildmatch(pattern, name))
	return 1;
	if (ex->match_flags & MATCHFLG_WILD2_PREFIX) {
	/* If the **-prefixed pattern has a '/' as the next
	* character, then try to match the rest of the
	* pattern at the root. */
	if (pattern[2] == '/' && wildmatch(pattern+3, name))
	return 1;
	}
	else if (!match_start && ex->match_flags & MATCHFLG_WILD2) {
	/* A non-anchored match with an infix or trailing "**"
	* (but not a prefixed "**") needs to try matching
	* after every slash. */
	while ((name = strchr(name, '/')) != NULL) {
	name++;
	if (wildmatch(pattern, name))
	return 1;
	}
	}
	} else if (match_start) {
	if (strcmp(name,pattern) == 0)
	return 1;
	} else {
	int l1 = strlen(name);
	int l2 = strlen(pattern);
	if (l2 <= l1 &&
	strcmp(name+(l1-l2),pattern) == 0 &&
	(l1==l2 \|\| name[l1-(l2+1)] == '/')) {
	return 1;
	}
	}

	return 0;
	}


	static void report_exclude_result(char const *name,
	struct exclude_struct const *ent,
	int name_is_dir)
	{
	/* If a trailing slash is present to match only directories,
	* then it is stripped out by make_exclude. So as a special
	* case we add it back in here. */

	if (verbose >= 2)
	rprintf(FINFO, "%s %s %s because of pattern %s%s\n",
	ent->include ? "including" : "excluding",
	name_is_dir ? "directory" : "file",
	name, ent->pattern,
	ent->directory ? "/" : "");
	}


	/*
	* Return true if file NAME is defined to be excluded by either
	* LOCAL_EXCLUDE_LIST or the globals EXCLUDE_LIST.
	*/
	int check_exclude(struct exclude_struct *list, char name, int name_is_dir)
	{
	struct exclude_struct *ent;

	while ((ent = *list++) != NULL) {
	if (check_one_exclude(name, ent, name_is_dir)) {
	report_exclude_result(name, ent, name_is_dir);
	return !ent->include;
	}
	}

	return 0;
	}


	void add_exclude(struct exclude_struct **listp, const char pattern, int include)
	{
	struct exclude_struct *list = listp;
	int len = 0;

	if (*pattern == '!' && !pattern[1]) {
	free_exclude_list(listp);
	return;
	}

	if (list)
	for (; list[len]; len++) {}

	list = listp = (struct exclude_struct )Realloc(list,sizeof(struct exclude_struct )*(len+2));

	if (!list \|\| !(list[len] = make_exclude(pattern, include)))
	out_of_memory("add_exclude");

	if (verbose > 2) {
	rprintf(FINFO,"add_exclude(%s,%s)\n",pattern,
	include ? "include" : "exclude");
	}

	list[len+1] = NULL;
	}


	void add_exclude_file(struct exclude_struct **listp, const char fname,
	int fatal, int include)
	{
	int fd;
	char line[MAXPATHLEN];
	char *eob = line + MAXPATHLEN - 1;
	extern int eol_nulls;

	if (!fname \|\| !*fname)
	return;

	if (*fname != '-' \|\| fname[1])
	fd = open(fname, O_RDONLY\|O_BINARY);
	else
	fd = 0;
	if (fd < 0) {
	if (fatal) {
	rsyserr(FERROR, errno,
	"failed to open %s file %s",
	include ? "include" : "exclude",
	fname);
	exit_cleanup(RERR_FILEIO);
	}
	return;
	}

	while (1) {
	char ch, *s = line;
	int cnt;
	while (1) {
	if ((cnt = read(fd, &ch, 1)) <= 0) {
	if (cnt < 0 && errno == EINTR)
	continue;
	break;
	}
	if (eol_nulls? !ch : (ch == '\n' \|\| ch == '\r'))
	break;
	if (s < eob)
	*s++ = ch;
	}
	*s = '\0';
	if (line && line != ';' && *line != '#') {
	/* Skip lines starting with semicolon or pound.
	* It probably wouldn't cause any harm to not skip
	* them but there's no need to save them. */
	add_exclude(listp, line, include);
	}
	if (cnt <= 0)
	break;
	}
	close(fd);
	}


	void send_exclude_list(int f)
	{
	int i;
	extern int remote_version;
	extern int list_only, recurse;

	/* This is a complete hack - blame Rusty.
	*
	* FIXME: This pattern shows up in the output of
	* report_exclude_result(), which is not ideal. */
	if (list_only && !recurse)
	add_exclude(&exclude_list, "//", ADD_EXCLUDE);

	if (!exclude_list) {
	write_int(f,0);
	return;
	}

	for (i=0;exclude_list[i];i++) {
	int l;
	char pattern[MAXPATHLEN];

	strlcpy(pattern,exclude_list[i]->pattern,sizeof(pattern));
	if (exclude_list[i]->directory) strlcat(pattern,"/", sizeof(pattern));

	l = strlen(pattern);
	if (l == 0) continue;
	if (exclude_list[i]->include) {
	if (remote_version < 19) {
	rprintf(FERROR,"remote rsync does not support include syntax - aborting\n");
	exit_cleanup(RERR_UNSUPPORTED);
	}
	write_int(f,l+2);
	write_buf(f,"+ ",2);
	} else {
	write_int(f,l);
	}
	write_buf(f,pattern,l);
	}

	write_int(f,0);
	}


	void recv_exclude_list(int f)
	{
	char line[MAXPATHLEN];
	unsigned int l;

	while ((l=read_int(f))) {
	if (l >= MAXPATHLEN) overflow("recv_exclude_list");
	read_sbuf(f,line,l);
	add_exclude(&exclude_list, line, ADD_EXCLUDE);
	}
	}

	/* Get the next include/exclude arg from the string. It works in a similar way
	** to strtok - initially an arg is sent over, from then on NULL. This
	** routine takes into account any +/- in the strings and does not
	** consider the space following it as a delimeter.
	*/
	char get_exclude_tok(char p)
	{
	static char *s;
	static int more;
	char *t;

	if (p) {
	s=p;
	if (*p)
	more=1;
	}

	if (!more)
	return(NULL);

	/* Skip over any initial spaces */
	while (isspace(* (unsigned char *) s))
	s++;

	/* Are we at the end of the string? */
	if (*s) {
	/* remember the beginning of the token */
	t=s;

	/* Is this a '+' or '-' followed by a space (not whitespace)? */
	if ((s=='+' \|\| s=='-') && *(s+1)==' ')
	s+=2;

	/* Skip to the next space or the end of the string */
	while (!isspace(* (unsigned char ) s) && s != '\0')
	s++;
	} else {
	t=NULL;
	}

	/* Have we reached the end of the string? */
	if (*s)
	*s++='\0';
	else
	more=0;
	return(t);
	}


	void add_exclude_line(struct exclude_struct ***listp,
	const char *line, int include)
	{
	char tok, p;
	if (!line \|\| !*line) return;
	p = strdup(line);
	if (!p) out_of_memory("add_exclude_line");
	for (tok=get_exclude_tok(p); tok; tok=get_exclude_tok(NULL))
	add_exclude(listp, tok, include);
	free(p);
	}


	static char *cvs_ignore_list[] = {
	"RCS/", "SCCS/", "CVS/", ".svn/", "CVS.adm", "RCSLOG", "cvslog.*",
	"tags", "TAGS", ".make.state", ".nse_depinfo",
	"~", "#", ".#", ", ", ".old", ".bak", ".BAK", ".orig",
	".rej", ".del-", ".a", ".o", ".obj", ".so", ".Z", ".elc", "*.ln",
	"core", NULL};


	void add_cvs_excludes(void)
	{
	char fname[MAXPATHLEN];
	char *p;
	int i;

	for (i=0; cvs_ignore_list[i]; i++)
	add_exclude(&exclude_list, cvs_ignore_list[i], ADD_EXCLUDE);

	if ((p=getenv("HOME")) && strlen(p) < (MAXPATHLEN-12)) {
	snprintf(fname,sizeof(fname), "%s/.cvsignore",p);
	add_exclude_file(&exclude_list,fname,MISSING_OK,ADD_EXCLUDE);
	}

	add_exclude_line(&exclude_list, getenv("CVSIGNORE"), ADD_EXCLUDE);
	}