mirror of https://github.com/apache/jclouds.git
Issue 36: removed codegen code out of main aws module
git-svn-id: http://jclouds.googlecode.com/svn/trunk@1415 3d8758e0-26b5-11de-8745-db77d3ebf521
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adrian.f.cole
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#!/usr/bin/perl
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#
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#
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# Copyright (C) 2009 Global Cloud Specialists, Inc. <info@globalcloudspecialists.com>
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#
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# ====================================================================
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# ====================================================================
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#
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####
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# Parse EC2
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#
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# Builds an object tree used to create a REST service for the current EC2 api.
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#
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# Prerequisites:
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# * install HTML-Tree (http://search.cpan.org/~petek/HTML-Tree/)
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# 1. download and extract the archive
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# 2. cd to that location
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# 3. perl MakeFile.PL
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# 4. sudo make install
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# * install JSON (http://search.cpan.org/~makamaka/JSON-2.14/lib/JSON.pm)
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# 1. download and extract the archive
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# 2. cd to that location
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# 3. perl MakeFile.PL
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# 4. sudo make install
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#
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# Usage:
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# * execute the script with no arguments. If you've downloaded the content locally, adjust refUrl and parse
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#
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# Tips: use $tree->dump to view the current html tree and print Dumper($object) to see a reference
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# this code is formatted with PerlTidy
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# Author: Adrian Cole
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####
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use strict;
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use HTML::TreeBuilder 2.97;
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use LWP::UserAgent;
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use Data::Dumper;
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use JSON;
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my $refUrl = "http://docs.amazonwebservices.com/AWSEC2/latest/APIReference";
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#my $refUrl = "/tmp/scrape";
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my $appUrl = "${refUrl}/OperationList-query.html";
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my $domain = {};
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sub parse_file {
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my $file = $_[0] || die "What File?";
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my $tree = HTML::TreeBuilder->new();
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$tree->parse_file($file);
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$tree->eof;
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return $tree;
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}
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sub parse {
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#return parse_file(shift);
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return parse_url(shift);
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}
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sub get_subtypes {
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$_ = shift;
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if ( /^[A-Z]/ && $_ ne 'String' && $_ ne 'Integer' && $_ ne 'Boolean' ) {
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my $type = $_;
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$domain->{$type} = build_bean($type);
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}
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}
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sub parse_url {
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my $url = $_[0] || die "What URL?";
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my $response =
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LWP::UserAgent->new->request( HTTP::Request->new( GET => $url ) );
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unless ( $response->is_success ) {
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warn "Couldn't get $url: ", $response->status_line, "\n";
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return;
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}
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my $tree = HTML::TreeBuilder->new();
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$tree->parse( $response->content );
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$tree->eof;
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return $tree;
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}
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sub build_queries {
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my $tree = parse( $_[0] );
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my @out;
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foreach my $link (
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( $tree->look_down( '_tag', 'div', 'class', 'itemizedlist' ) ) )
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{
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my $category = $link->look_down( '_tag', 'b' )->as_text();
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my $queries;
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foreach my $class ( $link->look_down( '_tag', 'a' ) ) {
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my $type = $class->attr('title');
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my $query = build_query($type);
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# add a domain object for the response type
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$domain->{ $type . "Response" } =
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build_bean( $type . "Response", "Response" );
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$query->{responseType} = $type . "Response";
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$queries->{$type} = $query;
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}
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push @out,
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{
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name => $category,
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queries => $queries,
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};
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}
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$tree->eof;
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$tree->delete;
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return \@out;
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}
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sub build_app {
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my $url = shift;
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my $categories = build_queries($url);
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return {
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see => [$url],
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categories => $categories,
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domain => $domain
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};
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}
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sub build_query {
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my $type = shift;
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my $query = build_bean( $type, "Request" );
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my $tree = parse( ${ $query->{see} }[0] );
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my @{seeAlsoA} =
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$tree->look_down( '_tag', 'div', 'class', 'itemizedlist' )
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->look_down( '_tag', 'a' );
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foreach ( @{seeAlsoA} ) {
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push @{ $query->{see} }, $_->as_text();
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}
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$tree->eof;
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$tree->delete;
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return $query;
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}
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sub build_fields {
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my @{fieldRows} = @_;
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my @params;
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foreach my $fieldRow ( @{fieldRows} ) {
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my @{row} = $fieldRow->look_down( '_tag', 'td' );
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my %param;
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$param{name} = ${row}[0]->as_text();
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my $enumDiv =
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${row}[1]->look_down( '_tag', 'div', "class", "itemizedlist" );
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if ( defined $enumDiv ) {
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my $enum;
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my @enumEntries = $enumDiv->look_down( '_tag', 'p' );
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foreach my $enumEntry (@enumEntries) {
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$enumEntry = $enumEntry->as_text();
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my ( $code, $state ) = split( /: /, $enumEntry );
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chomp($code);
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chomp($state);
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$enum->{$code} = $state;
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}
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$param{valueMap} = $enum;
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$param{desc} = ${row}[1]->look_down( '_tag', 'p' )->as_text();
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}
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else {
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my @{data} = ${row}[1]->look_down( '_tag', 'p' );
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foreach ( @{data} ) {
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$_ = $_->as_text();
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if (s/Default: //) {
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$param{defaultValue} = $_;
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}
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elsif (s/Type: //) {
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$param{type} = $_;
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get_subtypes($_);
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}
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elsif (s/Ancestor: //) {
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$param{ancestor} = $_;
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}
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elsif (s/Children: //) {
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$param{children} = $_;
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}
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elsif (s/Constraints: //) {
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$param{constraints} = $_;
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if (m/.*default: ([0-9]+)/) {
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$param{defaultValue} = $1;
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}
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}
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elsif (s/Valid Values: //) {
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if (/\|/) {
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my @valid_values = split(' \| ');
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my $enum;
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foreach my $value (@valid_values) {
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$enum->{$value} = $value;
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}
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$param{valueMap} = $enum;
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}
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elsif (/([0-9]+) ?\-([0-9]+)/) {
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$param{constraints} = "$1-$2";
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}
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}
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else {
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$param{desc} = $_;
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}
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}
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}
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if ( defined ${row}[2] && ${row}[2]->as_text() =~ /No/ ) {
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$param{optional} = 'true';
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}
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else {
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$param{optional} = 'false';
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}
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push @params, \%param;
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}
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return \@params;
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}
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sub build_bean {
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my $type = shift;
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my $class = shift;
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my $bean = { type => $type, };
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my $see = "${refUrl}/ApiReference-ItemType-${type}.html";
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if ( defined $class ) {
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$_ = $type;
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if ( $class =~ /Response/ ) {
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# responses are related to the query. In this case, we must take
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# off the suffix Response to get the correct metadata url.
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s/$class//;
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}
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else {
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# if we are the query object, then there is a different master url.
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$see = "${refUrl}/ApiReference-query-${type}.html";
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}
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my $query = "${refUrl}/ApiReference-query-${_}.html";
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push @{ $bean->{see} }, $query;
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my $tree = parse($query);
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if ( !defined $tree ) {
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print "could not parse tree $_[0]\n";
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return {};
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}
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my $id = "ApiReference-query-${_}-Example-${class}-1";
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my ${requestExampleDiv} =
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$tree->look_down( '_tag', 'h3', 'id', "$id" )
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->look_up( '_tag', 'div', 'class', 'section' );
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$bean->{exampleHTML} = ${requestExampleDiv}->as_HTML();
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$bean->{exampleCode} =
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${requestExampleDiv}
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->look_down( '_tag', 'pre', 'class', 'programlisting' )->as_text();
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$tree->eof;
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$tree->delete;
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}
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push @{ $bean->{see} }, $see unless defined $bean->{see};
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my $tree = parse($see);
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if ( !defined $tree ) {
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print "could not parse tree $_[0]\n";
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return {};
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}
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# $tree->dump();
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$tree->eof;
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my $id = "ApiReference-ItemType-${type}-Ancestors";
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my ${ancestorH2} = $tree->look_down( '_tag', 'h2', 'id', "$id" );
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my ${ancestorDiv} =
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${ancestorH2}->look_up( '_tag', 'div', 'class', 'section' )
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if defined ${ancestorH2};
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my ${ancestorLink} =
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${ancestorDiv}->look_down( '_tag', 'a', 'class', 'xref' )
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if defined ${ancestorDiv};
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if ( defined ${ancestorLink} ) {
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$bean->{ancestor} = ${ancestorLink}->as_text();
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}
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else {
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$bean->{ancestor} = "None";
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}
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my @{fieldRows} = my $body = ${tree}->look_down( '_tag', 'tbody' );
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if ( !defined $body ) {
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print "could not parse body $_[0]\n";
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return [];
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}
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@{fieldRows} = $body->look_down( '_tag', 'tr' );
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my $fields = build_fields( @{fieldRows} );
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$tree->delete;
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$bean->{fields} = $fields;
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return $bean;
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}
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# start app!
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my $app = build_app($appUrl);
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my $app_json = to_json( $app, { utf8 => 1, pretty => 1 } );
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print $app_json
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