Convert boot and boot-pkgs to perl

This stops us having to worry about sh/sed/... portability.

1 files changed, 49 insertions, 31 deletions

diff --git a/boot b/boot
index 6b04fcc0c4..70d99e692a 100644
--- a/boot
+++ b/boot
@@ -1,39 +1,57 @@
-#! /bin/sh
-set -e
+#!/usr/bin/perl -w
+
+use strict;
+
+use Cwd;
 
 # Create libraries/*/{ghc.mk,GNUmakefile}
-bash boot-pkgs
+system("/usr/bin/perl", "-w", "boot-pkgs") == 0
+    or die "Running boot-pkgs failed: $?";
+
+my $dir;
+my $curdir;
+
+$curdir = &cwd();
 
 # Check that we have all boot packages.
-for dir in `grep "^[^# ][^ ]*  *[^ ][^ ]*  *[^ ][^ ]*$" packages | sed "s/ .*//"`
-do
-    # We would like to just check for an _darcs directory here, but in
-    # an lndir tree we avoid making _darcs directories, so it doesn't
-    # exist. We therefore require that every repo has a LICENSE file
-    # instead.
-    if test ! -f $dir/LICENSE
-    then
-        echo "Error: $dir/LICENSE doesn't exist." >&2
-        echo "Maybe you haven't done './darcs-all get'?" >&2
-        exit 1
-    fi
-done
+open PACKAGES, "< packages";
+while (<PACKAGES>) {
+    if (/^#/) {
+        # Comment; do nothing
+    }
+    elsif (/^([a-zA-Z0-9\/.-]+) *[^ ]+ *[^ ]+$/) {
+        $dir = $1;
+        
+        # We would like to just check for an _darcs directory here, but in
+        # an lndir tree we avoid making _darcs directories, so it doesn't
+        # exist. We therefore require that every repo has a LICENSE file
+        # instead.
+        if (! -f "$dir/LICENSE") {
+            print STDERR "Error: $dir/LICENSE doesn't exist.\n";
+            die "Maybe you haven't done './darcs-all get'?";
+        }
+    }
+    elsif (/^([a-zA-Z0-9\/.-]+) *[^ ]+ *[^ ]+ *[^ ]+$/) {
+        # These are lines which refer to optional repositories, so their
+        # absence isn't an error.
+    }
+    else {
+        die "Bad line in packages file: $_";
+    }
+}
+close PACKAGES;
 
 # autoreconf everything that needs it.
-for dir in . libraries/*
-do
-    if test -f $dir/configure.ac
-    then
-        echo "Booting $dir"
-        ( cd $dir && autoreconf )
-    fi
-done
+foreach $dir (".", glob("libraries/*/")) {
+    if (-f "$dir/configure.ac") {
+        print "Booting $dir\n";
+        chdir $dir;
+        system "autoreconf";
+        chdir $curdir;
+    }
+}
 
 # Alas, darcs doesn't handle file permissions, so fix a few of them.
-for f in boot darcs-all push-all validate
-do
-    if test -f $f
-    then
-        chmod +x $f
-    fi
-done
+for my $file ("boot", "darcs-all", "push-all", "validate") {
+    chmod 0755, $file if -f $file;
+}