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package WWW::MapBlast;
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our $VERSION = 0.02;
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our $DATE = "Mon Jun 25 18:13:00 2001 BST";
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5
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1
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1
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6293
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use LWP::UserAgent;
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1
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51186
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1
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35
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6
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1
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use HTTP::Request;
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1
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24
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7
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1
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1005
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use HTML::TokeParser;
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12787
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30
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8
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use strict;
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23
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use warnings;
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1467
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11
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=head1 NAME
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WWW::MapBlast - latitude & longitude from postal codes.
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15
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=head1 SYNOPSIS
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use WWW::MapBlast;
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my ($lat, $lon) = WWW::MapBlast::latlon('United Kingdom','BN3 3AG');
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__END__;
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=head1 DESCRIPTION
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Simply accesses L and
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retrieves latitude and longitude information.
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26
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Only minimal error checking, so have a look through the source before you use.
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28
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=cut
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29
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30
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our %countriesList = (
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"United States"=>"USA","AFG"=>"Afghanistan","Albania"=>"ALB","Algeria"=>"DZA",
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"American Samoa"=>"ASM","Andorra"=>"AND","Angola"=>"AGO","Anguilla"=>"AIA",
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"Antigua and Barbuda"=>"ATG","Argentina"=>"ARG","Armenia"=>"ARM","Aruba"=>"ABW",
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34
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"Australia"=>"AUS","Austria"=>"AUT","Azerbaijan"=>"AZE","Bahamas"=>"BHS",
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35
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"Bahrain"=>"BHR","Bangladesh"=>"BGD","Barbados"=>"BRB","Belarus"=>"BLR",
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36
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"Belgium"=>"BEL","Belize"=>"BLZ","Benin"=>"BEN","Bermuda"=>"BMU",
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37
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"Bhutan"=>"BTN","Bolivia"=>"BOL","Bosnia and Herzegovina"=>"BIH","Botswana"=>"BWA",
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38
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"Brazil"=>"BRA","British Virgin Islands"=>"VGB","Brunei Darussalam"=>"BRN",
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39
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"Bulgaria"=>"BGR","Burkina Faso"=>"BFA","Burundi"=>"BDI","Cambodia"=>"KHM",
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40
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"Cameroon"=>"CMR","Canada"=>"CAN","Cape Verde"=>"CPV","Cayman Islands"=>"CYM",
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41
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"Central African Republic"=>"CAF","Chad"=>"TCD",
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42
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"Chile"=>"CHL","China"=>"CHN","Colombia"=>"COL","Comoros"=>"COM",
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43
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"Congo"=>"COG","Cook Islands"=>"COK","Costa Rica"=>"CRI","Croatia"=>"HRV",
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44
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"Cuba"=>"CUB","Cyprus"=>"CYP","Czech Republic"=>"CZE","Denmark"=>"DNK",
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45
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"Djibouti"=>"DJI","Dominica"=>"DMA","Dominican Republic"=>"DOM","Ecuador"=>"ECU",
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46
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"Egypt"=>"EGY","El Salvador"=>"SLV","Equatorial Guinea"=>"GNQ","Eritrea"=>"ERI",
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47
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"Estonia"=>"EST","Ethiopia"=>"ETH","Falkland Islands"=>"FLK","Faroe Islands"=>"FRO",
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48
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"Fiji"=>"FJI","Finland"=>"FIN","France"=>"FRA","French Guiana"=>"GUF",
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49
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"French Polynesia"=>"PYF","Gabon"=>"GAB","Gambia"=>"GMB","Georgia"=>"GEO",
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50
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"Germany"=>"DEU","Ghana"=>"GHA","Gibraltar"=>"GIB","Greece"=>"GRC",
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51
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"Greenland"=>"GRL","Grenada"=>"GRD","Guadeloupe"=>"GLP","Guatemala"=>"GTM",
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52
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"Guinea"=>"GIN","Guinea Bissau"=>"GNB","Guyana"=>"GUY","Haiti"=>"HTI",
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53
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"Honduras"=>"HND","Hong Kong"=>"HKG","Hungary"=>"HUN","Iceland"=>"ISL",
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54
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"India"=>"IND","Indonesia"=>"IDN","Iran"=>"IRN","Iraq"=>"IRQ",
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55
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"Ireland"=>"IRL","Israel"=>"ISR","Italy"=>"ITA","Ivory Coast"=>"CIV",
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56
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"Jamaica"=>"JAM","Japan"=>"JPN","Jordan"=>"JOR","Kazakhstan"=>"KAZ",
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57
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"Kenya"=>"KEN","Kiribati"=>"KIR","Kuwait"=>"KWT","Kyrgyzstan"=>"KGZ",
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58
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"Laos"=>"LAO","Latvia"=>"LVA","Lebanon"=>"LBN","Lesotho"=>"LSO",
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59
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"Liberia"=>"LBR","Libya"=>"LBY",",Liechtenstein"=>"LIE","Lithuania"=>"LTU",
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60
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"Luxembourg"=>"LUX","Macau"=>"MAC","Macedonia"=>"MKD","Madagascar"=>"MDG",
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61
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"Malawi"=>"MWI","Malaysia"=>"MYS","Maldives"=>"MDV","Mali"=>"MLI",
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62
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"Malta"=>"MLT","Marshall Islands"=>"MHL","Martinique"=>"MTQ","Mauritania"=>"MRT",
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63
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"Mauritius"=>"MUS","Mexico"=>"MEX","Micronesia"=>"FSM","Moldova"=>"MDA",
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64
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"Monaco"=>"MCO","Mongolia"=>"MNG","Montserrat"=>"MSR","Morocco"=>"MAR",
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65
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"Mozambique"=>"MOZ","Myanmar"=>"MMR","Namibia"=>"NAM","Nepal"=>"NPL",
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66
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"Netherlands"=>"NLD","Netherlands Antilles"=>"ANT","New Caledonia"=>"NCL","New Zealand"=>"NZL",
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67
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"Nicaragua"=>"NIC","Niger"=>"NER","Nigeria"=>"NGA","Norfolk Island"=>"NFK",
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68
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"North Korea"=>"PRK","Northern Mariana Islands"=>"MNP","Norway"=>"NOR","Oman"=>"OMN",
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69
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"Pakistan"=>"PAK","Palau"=>"PLW","Panama"=>"PAN","Papua New Guinea"=>"PNG",
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70
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"Paraguay"=>"PRY","Peru"=>"PER","Philippines"=>"PHL","Poland"=>"POL",
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71
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"Portugal"=>"PRT","Puerto Rico"=>"PRI","Qatar"=>"QAT","Reunion"=>"REU",
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72
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"Romania"=>"ROM","Russia"=>"RUS","Rwanda"=>"RWA","Saint Helena"=>"SHN",
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73
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"Saint Kitts and Nevis"=>"KNA","Saint Lucia"=>"LCA","Saint Pierre and Miquelon"=>"SPM","Saint Vincent/Grenadines"=>"VCT","Samoa"=>"WSM","San Marino"=>"SMR",
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74
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"Saotome and Principe"=>"STP","Saudi Arabia"=>"SAU","Senegal"=>"SEN","Seychelles"=>"SYC",
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75
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"Sierra Leone"=>"SLE","Singapore"=>"SGP","Slovak Republic"=>"SVK","Slovenia"=>"SVN",
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76
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"Solomon Islands"=>"SLB","Somalia"=>"SOM","South Africa"=>"ZAF","South Korea"=>"KOR",
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77
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"Spain"=>"ESP","Sri Lanka"=>"LKA","Sudan"=>"SDN","Suriname"=>"SUR",
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78
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"Swaziland"=>"SWZ","Sweden"=>"SWE","Switzerland"=>"CHE","Syria"=>"SYR",
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79
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"Taiwan"=>"TWN","Tajikistan"=>"TJK","Tanzania"=>"TZA","Thailand"=>"THA",
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80
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"Togo"=>"TGO","Tokelau"=>"TKL","Tonga"=>"TON","Trinidad and Tobago"=>"TTO",
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81
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"Tunisia"=>"TUN","Turkey"=>"TUR","Turkmenistan"=>"TKM","Turks and Caicos Islands"=>"TCA",
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82
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"Uganda"=>"UGA","Ukraine"=>"UKR","United Arab Emirates"=>"ARE","United Kingdom"=>"GBR",
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83
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"United States"=>"USA","US Virgin Islands"=>"VIR","Uruguay"=>"URY","Uzbekistan"=>"UZB",
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84
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"Vanuatu"=>"VUT","Vatican"=>"VAT","Venezuela"=>"VEN","Vietnam"=>"VNM",
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85
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"Western Sahara"=>"ESH","Yemen"=>"YEM","Yugoslavia"=>"YUG","Zambia"=>"ZMB",
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86
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"Zimbabwe"=>"ZWE"
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87
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);
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88
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89
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90
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=head1 Commentary
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91
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92
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Set $CHAT if you wish to see what's going on during net access.
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93
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94
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=cut
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95
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96
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our $CHAT;
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97
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98
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=head1 Subroutine latlon (country, postcode)
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99
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100
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Accepts a country name and a postal code, returns the relative latitude and longitude as defined by MapBlast.com
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101
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102
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The argument C must match a key of the module's C<%countriesList> hash, so it may be an idea to check your input against those keys before calling.
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103
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104
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Will try to connect four times, and return C on failure.
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105
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106
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B that latitude and longitude is not (C,C) !
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107
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108
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=cut
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109
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110
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0
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0
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sub latlon { my ($country, $postcode) = (shift,shift);
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111
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0
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for (0..3){
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112
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0
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0
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warn "Trying $_...\n" if $CHAT;
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113
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0
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my $doc = get_document($country,$postcode);
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114
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0
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@_ = extract_latlon($doc);
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115
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0
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0
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last if defined $_[0];
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116
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}
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117
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0
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return @_;
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118
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}
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119
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120
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121
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#
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122
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# SUB get_document
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123
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# Accepts a country name, and a postcode
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124
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# Returns:
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125
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#
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126
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0
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0
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0
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sub get_document { my ($country,$postcode) = (shift,shift);
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127
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0
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0
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0
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die "get_document requires a \$country,\$postcode arrity" if not defined $country or not defined $postcode;
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128
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0
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0
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0
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warn "No code for country <$country>." and return undef if not exists $countriesList{$country};
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129
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0
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$postcode =~ s/\s//g;
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130
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131
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0
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my $ua = LWP::UserAgent->new; # Create a new UserAgent
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132
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0
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$ua->agent('Mozilla/25.'.(localtime)." (PERL __PACKAGE__ $VERSION"); # Give it a type name
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133
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0
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0
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warn "Attempting to access ...\n" if $CHAT;
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134
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135
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0
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my $url =
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136
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'http://www.mapblast.com/myblast/map.mb?'
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137
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. 'CMD=GEO&req_action=crmap&AD4='. $countriesList{$country}
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138
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. '&AD3='.$postcode
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139
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. '&x=0&y=0';
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140
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141
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# Format URL request
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142
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0
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0
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0
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my $req = new HTTP::Request ('GET',$url) or die "...could not GET.\n" and return undef;
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143
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0
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my $res = $ua->request($req); # $res is the object UA returned
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144
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0
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0
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if (not $res->is_success()) { # If successful
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145
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0
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0
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warn"...failed.\n" if $CHAT;
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146
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return undef
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147
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0
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}
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148
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0
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0
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warn "...ok.\n" if $CHAT;
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149
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150
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0
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return $res->content;
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151
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}
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152
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153
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154
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#
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155
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# extract_latlon
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156
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# Accepts an HTML result page from a MapBlast.com search
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157
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# Extracts the latitude/longitude from a link within the page
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158
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# - such as http://www.mapblast.com/myblast/driveSilo.mb?&IC_2=51.592423:-0.171996:8:&CT_2=51.592423:-0.171995:20000&AD4_2=GBR&apmenu_2=&apcode_2=&GAD1_2=&GAD2_2=Leslie+Road&GAD3_2=London%2c+N2+8BH&GMI_2=&MA=1&phone_2="
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159
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# Retunrs lat/lon, and the address as three scalars
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160
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#
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161
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0
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0
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0
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sub extract_latlon { my $doc = shift;
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162
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0
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my $token;
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163
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0
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my $address = ' ';
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164
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0
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0
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my $p = HTML::TokeParser->new(\$doc) or die "Couldn't create TokePraser: $!";
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165
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166
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# Get the address
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167
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0
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|
while ($token = $p->get_token){
|
168
|
0
|
0
|
0
|
|
|
|
if (@$token[1] eq 'input'
|
|
0
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
169
|
|
|
|
|
|
|
and defined @$token[2]
|
170
|
0
|
|
|
|
|
|
and exists %{@$token[2]}->{name}
|
171
|
0
|
|
|
|
|
|
and exists %{@$token[2]}->{value}
|
172
|
0
|
|
|
|
|
|
and %{@$token[2]}->{name} =~ /^GAD\d$/
|
173
|
|
|
|
|
|
|
and %{@$token[2]}->{value} !~ m/^\s*$/
|
174
|
|
|
|
|
|
|
){
|
175
|
0
|
|
|
|
|
|
$_ = %{@$token[2]}->{value};
|
|
0
|
|
|
|
|
|
|
176
|
0
|
0
|
0
|
|
|
|
if (defined $address and $address !~ m/$_/i){
|
177
|
0
|
|
|
|
|
|
$address .= "$_,";
|
178
|
|
|
|
|
|
|
}
|
179
|
|
|
|
|
|
|
}
|
180
|
|
|
|
|
|
|
}
|
181
|
0
|
0
|
|
|
|
|
$address = substr( $address, 1, length($address)-2 ) if defined $address;
|
182
|
0
|
|
|
|
|
|
$address =~ s/,+(\w)/, $1/g; # MapBlast returns ugly lists
|
183
|
0
|
0
|
0
|
|
|
|
return "Address not found" if not defined $address and $doc=~/Address not found/i;
|
184
|
|
|
|
|
|
|
|
185
|
|
|
|
|
|
|
# Get the co-ords
|
186
|
0
|
0
|
|
|
|
|
$p = HTML::TokeParser->new(\$doc) or die "Couldn't create TokePraser: $!";
|
187
|
0
|
|
0
|
|
|
|
while ($token = $p->get_token
|
|
|
|
0
|
|
|
|
|
188
|
|
|
|
|
|
|
and not (@$token[1] eq 'img' and %{@$token[2]}->{src} eq '/myblast/images/topnav/mapsiloon.gif')
|
189
|
|
|
|
|
|
|
){}
|
190
|
0
|
|
0
|
|
|
|
while ($token = $p->get_token and @$token[1] ne 'a'){}
|
191
|
0
|
0
|
|
|
|
|
if (defined @$token[2]){
|
192
|
0
|
|
|
|
|
|
%{@$token[2]}->{href} =~ m/IC_2=([\d:.-]+)&/;
|
|
0
|
|
|
|
|
|
|
193
|
0
|
0
|
|
|
|
|
if (defined $1){
|
194
|
0
|
|
|
|
|
|
my ($lat,$lon,$rubbish) = split(/:/,$1,3);
|
195
|
0
|
|
|
|
|
|
return ($lat,$lon,$address);
|
196
|
|
|
|
|
|
|
}
|
197
|
|
|
|
|
|
|
}
|
198
|
0
|
|
|
|
|
|
warn "Unexpected format from MapBlast.com.\n";
|
199
|
0
|
|
|
|
|
|
return undef;
|
200
|
|
|
|
|
|
|
}
|
201
|
|
|
|
|
|
|
|
202
|
|
|
|
|
|
|
|
203
|
|
|
|
|
|
|
=head1 LATITUDE AND LONGITUDE
|
204
|
|
|
|
|
|
|
|
205
|
|
|
|
|
|
|
After L:
|
206
|
|
|
|
|
|
|
|
207
|
|
|
|
|
|
|
=over 4
|
208
|
|
|
|
|
|
|
|
209
|
|
|
|
|
|
|
Zero degrees latitude is the equator, with the North pole at 90 degrees latitude and the South pole at -90 degrees latitude.
|
210
|
|
|
|
|
|
|
one degree is approximately 69 miles. Greenwich, England is at 51.466 degrees north of the equator.
|
211
|
|
|
|
|
|
|
|
212
|
|
|
|
|
|
|
Zero degrees longitude goes through Greenwich, England.
|
213
|
|
|
|
|
|
|
Again, Each 69 miles from this meridian represents approximately 1 degree of longitude.
|
214
|
|
|
|
|
|
|
East/West is plus/minus respectively.
|
215
|
|
|
|
|
|
|
|
216
|
|
|
|
|
|
|
=back
|
217
|
|
|
|
|
|
|
|
218
|
|
|
|
|
|
|
=head1 PREREQUISITES
|
219
|
|
|
|
|
|
|
|
220
|
|
|
|
|
|
|
LWP::UserAgent;
|
221
|
|
|
|
|
|
|
HTTP::Request;
|
222
|
|
|
|
|
|
|
HTML::TokeParser;
|
223
|
|
|
|
|
|
|
strict;
|
224
|
|
|
|
|
|
|
warnings.
|
225
|
|
|
|
|
|
|
|
226
|
|
|
|
|
|
|
=head1 EXPORTS
|
227
|
|
|
|
|
|
|
|
228
|
|
|
|
|
|
|
None by default.
|
229
|
|
|
|
|
|
|
|
230
|
|
|
|
|
|
|
=head1 REVISIONS
|
231
|
|
|
|
|
|
|
|
232
|
|
|
|
|
|
|
=item 0.02
|
233
|
|
|
|
|
|
|
|
234
|
|
|
|
|
|
|
Now returns street addresses in addition to latitude and longitude.
|
235
|
|
|
|
|
|
|
|
236
|
|
|
|
|
|
|
=head1 SEE ALSO
|
237
|
|
|
|
|
|
|
|
238
|
|
|
|
|
|
|
L, L, L.
|
239
|
|
|
|
|
|
|
|
240
|
|
|
|
|
|
|
=head1 AUTHOR
|
241
|
|
|
|
|
|
|
|
242
|
|
|
|
|
|
|
Lee Goddard L.
|
243
|
|
|
|
|
|
|
|
244
|
|
|
|
|
|
|
=head1 COPYRIGHT
|
245
|
|
|
|
|
|
|
|
246
|
|
|
|
|
|
|
Copyright (C) Lee Goddard, 2001 - All Rights Reserved.
|
247
|
|
|
|
|
|
|
|
248
|
|
|
|
|
|
|
This library is free software and may be used only under the same terms as Perl itself.
|
249
|
|
|
|
|
|
|
|
250
|
|
|
|
|
|
|
=cut
|
251
|
|
|
|
|
|
|
|
252
|
|
|
|
|
|
|
1;
|
253
|
|
|
|
|
|
|
__END__
|