#!/usr/bin/perl
$version = $ARGV[0];

# if no further option is present then default to "all"
if (not $ARGV[1]) {
  $all = 1;
}

# parse option "--org.texi [<optional_file>]"
# (only simple parsing since no more than one option supported yet)
if ($ARGV[1] eq "--org.texi") {
  $org_texi_opt = 1;
  if ($ARGV[2]) {
    $org_texi_file = "$ARGV[2]";
  }
}

die "No version given" unless $version=~/\S/;
$date = `date "+%B %Y"`; chomp $date;
$year = `date "+%Y"` ; chomp $year;

print STDERR "Changing version to \"$version\" and date to \"$date\" in the following files:\n" ;

if ($all) {
  print STDERR join("\n",glob("lisp/*.el")),"\n";
  $cmd = qq{s/^(;; Version:)\\s+(\\S+)[ \t]*\$/\$1 $version/;s/^(\\(defconst org-version )"(\\S+)"/\$1"$version"/};
  $c1 = "perl -pi -e '$cmd' lisp/*.el";
  system($c1);
}

if ($all or $org_texi_opt) {
  if (not "$org_texi_file") {
    $org_texi_file = "doc/org.texi";
  }
  print STDERR "$org_texi_file\n";
  $cmd = qq{s/^(\\\@set VERSION)\\s+(\\S+)[ \t]*\$/\$1 $version/;s/^(\\\@set DATE)\\s+(.*)\$/\$1 $date/;};
  $c1 = "perl -pi -e '$cmd' '$org_texi_file'";
  system($c1);
}

if ($all) {
  print STDERR "doc/orgguide.texi\n";
  $cmd = qq{s/^(\\\@set VERSION)\\s+(\\S+)[ \t]*\$/\$1 $version/;s/^(\\\@set DATE)\\s+(.*)\$/\$1 $date/;};
  $c1 = "perl -pi -e '$cmd' doc/orgguide.texi";
  system($c1);
}

if ($all) {
  print STDERR "doc/orgcard.tex\n";
  $cmd = qq{s/^\\\\def\\\\orgversionnumber\\{\\S+\\}/\\\\def\\\\orgversionnumber{$version}/;s/\\\\def\\\\versionyear\\{\\S+\\}/\\\\def\\\\versionyear{$year}/;s/\\\\def\\\\year\\{\\S+\\}/\\\\def\\\\year{$year}/;};
  $c1 = "perl -pi -e '$cmd' doc/orgcard.tex";
  system($c1);
}

if ($all) {
  print STDERR "README_DIST\n";
  $cmd = qq{s/^(The version of this release is:)\\s+(\\S+)[ \t]*\$/\$1 $version/;};
  $c1 = "perl -pi -e '$cmd' README_DIST";
  system($c1);
}