Introduce 3 new options for pkg_create(1), -x for using basic

regular expressions for pkg-name, -E for extended regexps and -G for
exact matching.

Submitted by:	mux
MFC after:	3 days

usr.sbin/pkg_install/create/create.h

@@ -23,6 +23,7 @@
 #ifndef _INST_CREATE_H_INCLUDE
 #define _INST_CREATE_H_INCLUDE
 
+extern match_t	MatchType;
 extern char	*Prefix;
 extern char	*Comment;
 extern char	*Desc;

usr.sbin/pkg_install/create/main.c

@@ -16,8 +16,9 @@ __FBSDID("$FreeBSD$");
 #include "lib.h"
 #include "create.h"
 
-static char Options[] = "YNORhjvyzf:p:P:C:c:d:i:I:k:K:r:t:X:D:m:s:S:o:b:";
+static char Options[] = "EGYNORhjvxyzf:p:P:C:c:d:i:I:k:K:r:t:X:D:m:s:S:o:b:";
 
+match_t	MatchType	= MATCH_GLOB;
 char	*Prefix		= NULL;
 char	*Comment        = NULL;
 char	*Desc		= NULL;
@@ -57,6 +58,18 @@ main(int argc, char **argv)
 	    Verbose = TRUE;
 	    break;
 
+	case 'x':
+	    MatchType = MATCH_REGEX;
+	    break;
+
+	case 'E':
+	    MatchType = MATCH_EREGEX;
+	    break;
+
+	case 'G':
+	    MatchType = MATCH_EXACT;
+	    break;
+
 	case 'N':
 	    AutoAnswer = NO;
 	    break;
@@ -216,6 +229,6 @@ usage()
 "                  [-D displayfile] [-m mtreefile] [-o origin] ",
 "                  [-s srcdir] [-S basedir] ",
 "                  -c comment -d description -f packlist pkg-filename",
-"       pkg_create [-YNhvyzR] -b pkg-name [pkg-filename]");
+"       pkg_create [-EGYNhvxyzR] -b pkg-name [pkg-filename]");
     exit(1);
 }

usr.sbin/pkg_install/create/perform.c

@@ -81,9 +81,40 @@ pkg_perform(char **pkgs)
 	suf = "tar";
 
     if (InstalledPkg != NULL) {
-    	if (!Recursive)
-	    return (create_from_installed(InstalledPkg, pkg, suf));
-	return (create_from_installed_recursive(pkg, suf));
+	char *pkgglob[] = { InstalledPkg, NULL };
+	char **matched, **pkgs;
+	int i, error;
+
+	pkgs = pkgglob;
+	if (MatchType != MATCH_EXACT) {
+		matched = matchinstalled(MatchType, pkgs, &error);
+		if (!error && matched != NULL)
+			pkgs = matched;
+		else if (MatchType != MATCH_GLOB)
+	    		errx(1, "no packages match pattern");
+	}
+	/*
+	 * Is there is only one installed package matching the pattern,
+	 * we need to respect the optional pkg-filename parameter.  If,
+	 * however, the pattern matches several packages, this parameter
+	 * makes no sense and is ignored.
+	 */
+	if (pkgs[1] == NULL) {
+	    if (pkg == InstalledPkg)
+		pkg = *pkgs;
+	    InstalledPkg = *pkgs;
+	    if (!Recursive)
+		return (create_from_installed(InstalledPkg, pkg, suf));
+	    return (create_from_installed_recursive(pkg, suf));
+	}
+	for (i = 0; pkgs[i] != NULL; i++) {
+	    InstalledPkg = pkg = pkgs[i];
+	    if (!Recursive)
+		create_from_installed(pkg, pkg, suf);
+	    else
+	        create_from_installed_recursive(pkg, suf);
+	}
+	return TRUE;
     }
 
     get_dash_string(&Comment);

usr.sbin/pkg_install/create/pkg_create.1

@@ -23,7 +23,7 @@
 .\" [jkh] Took John's changes back and made some additional extensions for
 .\" better integration with FreeBSD's new ports collection.
 .\"
-.Dd June 14, 2005
+.Dd November 8, 2005
 .Dt PKG_CREATE 1
 .Os
 .Sh NAME
@@ -52,7 +52,7 @@
 .Fl f Ar packlist
 .Ar pkg-filename
 .Nm
-.Op Fl YNRhvy
+.Op Fl EGYNRhvxy
 .Fl b Ar pkg-name
 .Op Ar pkg-filename
 .Sh DESCRIPTION
@@ -341,6 +341,15 @@ also create package files for all packages required by
 Resulting archive(s) will be created in the current directory
 and named using name of the respective package with appropriate
 extraction suffix applied.
+.It Fl x
+Use basic regular expressions for
+.Ar pkg-name .
+.It Fl E
+Use extended (modern) regular expressions for
+.Ar pkg-name .
+.It Fl G
+Use exact matching for
+.Ar pkg-name .
 .El
 .Sh PACKING LIST DETAILS
 The