perl 2.0 (no announcement message available)perl-2.0

Some of the enhancements from Perl1 included:

    * New regexp routines derived from Henry Spencer's.
          o Support for /(foo|bar)/.
          o Support for /(foo)*/ and /(foo)+/.
          o \s for whitespace, \S for non-, \d for digit, \D nondigit 
    * Local variables in blocks, subroutines and evals.
    * Recursive subroutine calls are now supported.
    * Array values may now be interpolated into lists: unlink 'foo', 'bar', @trashcan, 'tmp';
    * File globbing.
    * Use of <> in array contexts returns the whole file or glob list.
    * New iterator for normal arrays, foreach, that allows both read and write.
    * Ability to open pipe to a forked off script for secure pipes in setuid scripts.
    * File inclusion via do 'foo.pl';
    * More file tests, including -t to see if, for instance, stdin is a terminal. File tests now behave in a more correct manner. You can do file tests on filehandles as well as filenames. The special filetests -T and -B test a file to see if it's text or binary.
    * An eof can now be used on each file of the <> input for such purposes as resetting the line numbers or appending to each file of an inplace edit.
    * Assignments can now function as lvalues, so you can say things like ($HOST = $host) =~ tr/a-z/A-Z/; ($obj = $src) =~ s/\.c$/.o/;
    * You can now do certain file operations with a variable which holds the name of a filehandle, e.g. open(++$incl,$includefilename); $foo = <$incl>;
    * Warnings are now available (with -w) on use of uninitialized variables and on identifiers that are mentioned only once, and on reference to various undefined things.
    * There is now a wait operator.
    * There is now a sort operator.
    * The manual is now not lying when it says that perl is generally faster than sed. I hope.

3 files changed, 79 insertions, 0 deletions

diff --git a/lib/getopt.pl b/lib/getopt.pl
new file mode 100644
index 0000000000..4832233ed2
--- /dev/null
+++ b/lib/getopt.pl
@@ -0,0 +1,38 @@
+;# $Header: getopt.pl,v 2.0 88/06/05 00:16:22 root Exp $
+
+;# Process single-character switches with switch clustering.  Pass one argument
+;# which is a string containing all switches that take an argument.  For each
+;# switch found, sets $opt_x (where x is the switch name) to the value of the
+;# argument, or 1 if no argument.  Switches which take an argument don't care
+;# whether there is a space between the switch and the argument.
+
+;# Usage:
+;#	do Getopt('oDI');  # -o, -D & -I take arg.  Sets opt_* as a side effect.
+
+sub Getopt {
+    local($argumentative) = @_;
+    local($_,$first,$rest);
+
+    while (($_ = $ARGV[0]) =~ /^-(.)(.*)/) {
+	($first,$rest) = ($1,$2);
+	if (index($argumentative,$first) >= $[) {
+	    if ($rest ne '') {
+		shift;
+	    }
+	    else {
+		shift;
+		$rest = shift;
+	    }
+	    eval "\$opt_$first = \$rest;";
+	}
+	else {
+	    eval "\$opt_$first = 1;";
+	    if ($rest ne '') {
+		$ARGV[0] = "-$rest";
+	    }
+	    else {
+		shift;
+	    }
+	}
+    }
+}
diff --git a/lib/importenv.pl b/lib/importenv.pl
new file mode 100644
index 0000000000..c0c2be088e
--- /dev/null
+++ b/lib/importenv.pl
@@ -0,0 +1,14 @@
+;# $Header: importenv.pl,v 2.0 88/06/05 00:16:17 root Exp $
+
+;# This file, when interpreted, pulls the environment into normal variables.
+;# Usage:
+;#	do 'importenv.pl';
+;# or
+;#	#include <importenv.pl>
+
+local($tmp,$key) = '';
+
+foreach $key (keys(ENV)) {
+    $tmp .= "\$$key = \$ENV{'$key'};" if $key =~ /^[A-Za-z]\w*$/;
+}
+eval $tmp;
diff --git a/lib/stat.pl b/lib/stat.pl
new file mode 100644
index 0000000000..1895c58c19
--- /dev/null
+++ b/lib/stat.pl
@@ -0,0 +1,27 @@
+;# $Header: stat.pl,v 2.0 88/06/05 00:16:29 root Exp $
+
+;# Usage:
+;#	@ary = stat(foo);
+;#	$st_dev = @ary[$ST_DEV];
+;#
+$ST_DEV =	0 + $[;
+$ST_INO =	1 + $[;
+$ST_MODE =	2 + $[;
+$ST_NLINK =	3 + $[;
+$ST_UID =	4 + $[;
+$ST_GID =	5 + $[;
+$ST_RDEV =	6 + $[;
+$ST_SIZE =	7 + $[;
+$ST_ATIME =	8 + $[;
+$ST_MTIME =	9 + $[;
+$ST_CTIME =	10 + $[;
+$ST_BLKSIZE =	11 + $[;
+$ST_BLOCKS =	12 + $[;
+
+;# Usage:
+;#	do Stat('foo');		# sets st_* as a side effect
+;#
+sub Stat {
+    ($st_dev,$st_ino,$st_mode,$st_nlink,$st_uid,$st_gid,$st_rdev,$st_size,
+	$st_atime,$st_mtime,$st_ctime,$st_blksize,$st_blocks) = stat(shift(@_));
+}