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#!/usr/bin/perl
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# A script to allow Bash or Z-Shell to complete an Ant command-line.
#
# To install for Bash 2.0 or better, add the following to ~/.bashrc:
#
# complete -C complete-ant-cmd.pl ant build.sh
#
# To install for Z-Shell 2.5 or better, add the following to ~/.zshrc:
#
# function ant_complete () {
# local args_line args
# read -l args_line
# set -A args $args_line
# set -A reply $(COMP_LINE=$args_line complete-ant-cmd.pl ${args[1]} $1)
# }
# compctl -K ant_complete ant build.sh
my $cmdLine = "$ENV{'ANT_ARGS'} $ENV{'COMP_LINE'}";
my $antCmd = $ARGV[0];
my $word = $ARGV[1];
my @completions;
if ($word =~ /^-/) {
list(restrict($word, getArguments()));
} elsif ($cmdLine =~ /-(f|file|buildfile)\s+\S*$/) {
list(getBuildFiles($word));
} else {
list(restrict($word, getTargets()));
}
exit(0);
sub list {
for (@_) {
print "$_\n";
}
}
sub restrict {
my ($word, @completions) = @_;
grep(/^\Q$word\E/, @completions);
}
sub getArguments {
qw(-buildfile -debug -emacs -f -file -find -help -listener -logfile
-logger -projecthelp -quiet -verbose -version);
}
sub getBuildFiles {
my ($word) = @_;
grep(/\.xml$/, glob("$word*"));
}
sub getTargets {
# Look for build-file
my $buildFile = 'build.xml';
if ($cmdLine =~ /-(f|file|buildfile)\s+(\S+)(?!.*\s-(f|file|buildfile)\s)/) {
$buildFile = $2;
}
return () unless (-f $buildFile);
# Run "ant -projecthelp -debug" to list targets (-debug is required to get
# "Other targets", i.e. targets without a description). Keep a cache of
# results in a cache-file.
my $cacheFile = $buildFile;
$cacheFile =~ s|(.*/)?(.*)|${1}.ant-targets-${2}|;
if ((!-e $cacheFile) || (-z $cacheFile) || (-M $buildFile) < (-M $cacheFile)) {
open(CACHE, '>' . $cacheFile) || die "can\'t write $cacheFile: $!\n";
open(HELP, "$antCmd -projecthelp -debug -buildfile '$buildFile'|") || return();
my %targets;
while (<HELP>) {
# Exclude target names starting with dash, because they cannot be
# specified on the command line.
if (/^\s+\+Target:\s+(?!-)(\S+)/) {
$targets{$1}++;
}
}
my @targets = sort keys %targets;
for (@targets) {
print CACHE "$_\n";
}
return @targets;
}
# Read the target-cache
open(CACHE, $cacheFile) || die "can\'t read $cacheFile: $!\n";
my @targets;
while (<CACHE>) {
chop;
s/\r$//; # for Cygwin
push(@targets, $_);
}
close(CACHE);
@targets;
}
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