#!/usr/bin/perl -lpw

# 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.

# USAGE:
#   sqlite3 .svn/wc.db .dump | $0
#   $0 /path/to/wc
#   $0 /path/to/wc/.svn/wc.db
# DOES:
#   decodes blobs (eg, property skels) and dates to human-readable form
# REQUIRES:
#   sqlite3(1) (second and third usage forms only)

BEGIN {
  # locate sqlite3
  my $sqlite3 = $ENV{SQLITE3} || "sqlite3";
  # set stdin
  my $file = shift;
  $file = "." if -t and not $file;
  if ($file) {
    $file .= "/.svn/wc.db" if -e "$file/.svn/wc.db";
    close STDIN;
    open STDIN, "-|", $sqlite3, $file, '.dump';
  } else {
    # filter stdin to stdout
  }
}

# X'68656C6C6F' => "hello"
1 while s/X'([0-9A-F]{2})/chr(hex $1) . q[X']/e;
s/X''//g;
s/\n/\\n/g; # multiline props

# 1288312835000000 => "Fri Oct 29 02:40:35 2010"
s/(?<=,)(\d\d\d\d\d\d\d\d\d\d)\d\d\d\d\d\d(?=,)/sprintf '"%s"', scalar localtime $1/eg;