From ea089f538ee7e55a3059341901daac8f11eb94c1 Mon Sep 17 00:00:00 2001
From: graehl <graehl@ec762483-ff6d-05da-a07a-a48fb63a330f>
Date: Mon, 28 Jun 2010 18:35:54 +0000
Subject: shell escape

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@39 ec762483-ff6d-05da-a07a-a48fb63a330f
---
 vest/parallelize.pl | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/vest/parallelize.pl b/vest/parallelize.pl
index 6a2da1bb..28260155 100755
--- a/vest/parallelize.pl
+++ b/vest/parallelize.pl
@@ -35,6 +35,7 @@ my $randp=300;
 my $tryp=50;
 my $no_which;
 my $no_cd;
+
 my $DEBUG=$ENV{DEBUG};
 sub debug {
     if ($DEBUG) {
@@ -48,6 +49,17 @@ sub abspath($) {
     chomp $a;
     $a
 }
+my $is_shell_special=qr.[ \t\n\\><|&;"'`~*?{}$!()].;
+my $shell_escape_in_quote=qr.[\\"\$`!].;
+sub escape_shell {
+    my ($arg)=@_;
+    return undef unless defined $arg;
+    if ($arg =~ /$is_shell_special/) {
+        $arg =~ s/($shell_escape_in_quote)/\\$1/g;
+        return "\"$arg\"";
+    }
+    return $arg;
+}
 
 my $abscwd=abspath(&getcwd);
 sub print_help;
@@ -81,12 +93,8 @@ if ($no_which) {
     die "$prog not found - $cmd" unless $cmd;
 }
 #$cmd=abspath($cmd);
-for my $arg (@ARGV){
-	if ($arg=~ /\s/){
-		$cmd .= " \"$arg\"";
-	} else {
-		$cmd .= " $arg"
-	}
+for my $arg (@ARGV) {
+    $cmd .= " ".shell_escape($arg);
 }
 
 die "Please specify a command to parallelize\n" if $cmd eq '';
-- 
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