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#!/usr/bin/perl -w
use strict;
# Usage:
#
# ./darcs-all [-q] [-s] [--dph] [--extra] [--nofib] [--testsuite] get [darcs get flags]
# This gets the GHC core repos, if they do not already exist.
# -q says to be quite, and -s to be silent.
# --dph, --extra, --nofib, --testsuite also get the dph library,
# extralibs, nofib and testsuite
# repos respectively
# The darcs get flag you are most likely to want is --complete. By
# default we pass darcs the --partial flag.
#
# ./darcs-all [-q] [-s] cmd [darcs cmd flags]
# This runs the darcs "cmd" command, with any flags you give, in all
# of the repos you have checked out. e.g.
# ./darcs-all pull
# ./darcs-all -q send --dry-run
# -q says to be quite, and -s to be silent.
$| = 1; # autoflush stdout after each print, to avoid output after die
# Figure out where to get the other repositories from,
# based on where this GHC repo came from.
my $defaultrepo = `cat _darcs/prefs/defaultrepo`;
chomp $defaultrepo;
my $defaultrepo_base;
my $checked_out_tree;
if ($defaultrepo =~ /^...*:/) {
# HTTP or SSH
# Above regex says "at least two chars before the :", to avoid
# catching Win32 drives ("C:\").
$defaultrepo_base = $defaultrepo;
$defaultrepo_base =~ s#/[^/]+/?$##;
$checked_out_tree = 0;
}
elsif ($defaultrepo =~ /^\/|\.\.\/|.:(\/|\\)/) {
# Local filesystem, either absolute or relative path
# (assumes a checked-out tree):
$defaultrepo_base = $defaultrepo;
$checked_out_tree = 1;
}
else {
die "Couldn't work out defaultrepo";
}
my $verbose = 2;
my $ignore_failure = 0;
my %tags;
sub message {
if ($verbose >= 2) {
print "@_\n";
}
}
sub warning {
if ($verbose >= 1) {
print "warning: @_\n";
}
}
sub darcs {
message "== running darcs @_";
system ("darcs", @_) == 0
or $ignore_failure
or die "darcs failed: $?";
}
sub darcsall {
my $localpath;
my $path;
my $tag;
my @repos;
open IN, "< packages" or die "Can't open packages file";
@repos = <IN>;
close IN;
foreach (@repos) {
chomp;
if (/^([^# ]+) +(?:([^ ]+) +)?([^ ]+) +([^ ]+)$/) {
$localpath = $1;
$tag = defined($2) ? $2 : "";
if (-d "$localpath/_darcs") {
darcs (@_, "--repodir", $localpath);
}
elsif ($tag eq "") {
message "== Required repo $localpath is missing! Skipping";
}
else {
message "== $localpath repo not present; skipping";
}
}
elsif (! /^(#.*)?$/) {
die "Bad line: $_";
}
}
}
sub darcsget {
my $r_flags;
my $localpath;
my $remotepath;
my $path;
my $tag;
my @repos;
if (! grep /(?:--complete|--partial)/, @_) {
warning("adding --partial, to override use --complete");
$r_flags = [@_, "--partial"];
}
else {
$r_flags = \@_;
}
open IN, "< packages" or die "Can't open packages file";
@repos = <IN>;
close IN;
foreach (@repos) {
chomp;
if (/^([^ ]+) +(?:([^ ]+) +)?([^ ]+) +([^ ]+)$/) {
$localpath = $1;
$tag = defined($2) ? $2 : "";
$remotepath = $3;
if ($checked_out_tree) {
$path = "$defaultrepo_base/$localpath";
}
else {
if ($remotepath =~ /^http:/) {
$path = $remotepath;
}
else {
$path = "$defaultrepo_base/$remotepath";
}
}
if (($tag eq "") || defined($tags{$tag})) {
if (-d $localpath) {
warning("$localpath already present; omitting");
}
else {
darcs (@$r_flags, $path, $localpath);
}
}
}
elsif (! /^(#.*)?$/) {
die "Bad line: $_";
}
}
}
sub main {
if (! -d "_darcs" || ! -d "compiler") {
die "error: darcs-all must be run from the top level of the ghc tree."
}
while ($#_ ne -1) {
my $arg = shift;
# We handle -q here as well as lower down as we need to skip over it
# if it comes before the darcs command
if ($arg eq "-q") {
$verbose = 1;
}
elsif ($arg eq "-s") {
$verbose = 0;
}
# --dph says we grab the dph libs with 'get'.
# It has no effect on the other commands.
elsif ($arg eq "--dph") {
$tags{"dph"} = 1;
}
# --extra says we grab the extra libs with 'get'.
# It has no effect on the other commands.
elsif ($arg eq "--extra") {
$tags{"extralibs"} = 1;
}
# --nofib tells get to also grab the nofib repo.
# It has no effect on the other commands.
elsif ($arg eq "--nofib") {
$tags{"nofib"} = 1;
}
# --testsuite tells get to also grab the testsuite repo.
# It has no effect on the other commands.
elsif ($arg eq "--testsuite") {
$tags{"testsuite"} = 1;
}
else {
unshift @_, $arg;
if (grep /^-q$/, @_) {
$verbose = 1;
}
last;
}
}
if ($#_ eq -1) {
die "What do you want to do?";
}
my $command = $_[0];
if ($command eq "get") {
darcsget @_;
}
else {
if ($command =~ /^(?:w|wh|wha|what|whats|whatsn|whatsne|whatsnew)$/) {
# Hack around whatsnew failing if there are no changes
$ignore_failure = 1;
}
darcsall @_;
}
}
main(@ARGV);
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