Mercurial > hg > egg-tcls
annotate fetch_weather.pl @ 192:52d8fa967c24
Fix timestamp parsing.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Fri, 13 Jun 2014 22:32:15 +0300 |
parents | 127b1d0f874e |
children | 93ec73deebc5 |
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1 #!/usr/bin/perl -w |
182 | 2 ########################################################################## |
3 # | |
4 # Fetch Weather v0.1 by Matti 'ccr' Hamalainen <ccr@tnsp.org> | |
5 # (C) Copyright 2014 Tecnic Software productions (TNSP) | |
6 # | |
7 # Should be ran as a cronjob, and configured properly. | |
8 # 15 * * * * /absolute/path/to/fetch_weather.pl </path/to/configfile> | |
9 # | |
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10 # Configuration file example is in fetch_weather.config |
182 | 11 # |
12 # This script is freely distributable under GNU GPL (version 2) license. | |
13 # | |
14 ########################################################################## | |
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15 use strict; |
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16 use LWP::UserAgent; |
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17 use HTML::Entities; |
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18 use XML::Simple; |
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19 use Text::Iconv; |
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20 use Time::Piece; |
189 | 21 use Date::Format; |
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22 use Data::Dumper; |
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23 |
166 | 24 |
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25 ### |
182 | 26 ### Configuration settings |
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27 ### |
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28 my %settings = ( |
166 | 29 "debug" => 0, |
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30 "opt_fmi" => 0, |
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31 "opt_tiehallinto" => 0, |
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32 "fmi_api_key" => "", |
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33 "outfile" => "", |
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34 "http_user_agent" => "Mozilla/4.0 (compatible; MSIE 6.0; MSIE 5.5; Windows NT 6.0) Opera 10.63 [en]", |
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35 ); |
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36 |
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37 |
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38 ### |
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39 ### Helper functions |
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40 ### |
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41 sub mlog($) |
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42 { |
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43 print STDERR $_[0]; |
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44 } |
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45 |
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46 |
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47 sub fetch_http($) |
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48 { |
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49 my $tmpAgent = LWP::UserAgent->new; |
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50 $tmpAgent->agent($settings{"http_user_agent"}); |
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51 $tmpAgent->timeout(10); |
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52 |
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53 my $tmpRequest = HTTP::Request->new(GET => $_[0]); |
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54 |
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55 return $tmpAgent->request($tmpRequest); |
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56 } |
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57 |
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58 |
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59 sub parse_timestamp($$) |
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60 { |
182 | 61 # XXX: A bit of a hack, but it works. |
192 | 62 return Time::Piece->strptime($_[0], "%OH:%OM")->epoch + $_[1]; |
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63 } |
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64 |
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65 |
189 | 66 sub gmt_time_fmt($) |
67 { | |
68 # 2012-02-27T00:00:00Z | |
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69 return gmtime($_[0])->strftime("%Y-%m-%dT%TZ"); |
189 | 70 } |
71 | |
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72 sub str_trim($) |
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73 { |
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74 my $str = $_[0]; |
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75 if (defined($str)) { |
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76 $str =~ s/^\s*//; |
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77 $str =~ s/\s*$//; |
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78 } |
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79 return $str; |
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80 } |
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81 |
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82 |
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83 ### |
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84 ### Loose HTML parser |
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85 ### |
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86 sub pop_token_a($) |
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87 { |
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88 my $tokens = $_[0]; |
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89 return shift(@$tokens); |
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90 } |
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91 |
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92 |
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93 sub pop_token($) |
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94 { |
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95 return str_trim(pop_token_a($_[0])); |
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96 } |
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97 |
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98 |
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99 sub parse_html_str($) |
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100 { |
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101 my $tokens = $_[0]; |
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102 my $token = pop_token($tokens); |
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103 my $str = ""; |
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104 $token =~ s/^\s*//; |
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105 |
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106 return undef unless (substr($token, 0, 1) eq '"'); |
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107 $token = substr($token, 1); |
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108 |
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109 while (defined($token)) { |
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110 my $tmp = $token; |
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111 $tmp =~ s/\s*$//; |
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112 if (substr($tmp, -1) eq '"') { |
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113 $str .= substr($tmp, 0, -1); |
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114 return $str; |
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115 } else { |
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116 $str .= $token; |
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117 } |
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118 $token = shift(@$tokens); |
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119 } |
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120 return undef; |
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121 } |
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122 |
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123 |
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124 sub parse_html_tree($$); |
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125 |
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126 sub parse_html_tree($$) |
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127 { |
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128 my ($tokens, $tree) = @_; |
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129 |
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130 while (my $token = pop_token($tokens)) { |
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131 if ($token =~ /^<[!\/]?[a-zA-Z]+/) { |
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132 $token = lc($token); |
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133 if ($token =~ /^<\!.*>$/) { |
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134 # Ignore comments etc. |
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135 } elsif ($token =~ /^<([a-z]+[1-9]*)(.*)>$/) { |
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136 my ($name, $args) = ($1, $2); |
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137 if ($name eq "meta" || $name eq "img") { |
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138 my $tmp = {}; |
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139 parse_html_tree($tokens, $tree); |
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140 return $tree; |
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141 } else { |
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142 my $tmp = { "name" => $name, "args" => str_trim($args) }; |
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143 parse_html_tree($tokens, $tmp); |
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144 push(@{$$tree{"nodes"}}, $tmp); |
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145 } |
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146 } elsif ($token =~ /^<\/([a-z]+[1-9]*)>$/) { |
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147 return $tree; |
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148 } else { |
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149 die("HORROR TERROR ELITE: '$token'\n"); |
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150 } |
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151 } else { |
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152 $token = str_trim(decode_entities($token)); |
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153 push(@{$$tree{"nodes"}}, { "name" => "text", "args" => "", "text" => $token }) if length($token) > 0; |
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154 } |
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155 } |
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156 |
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157 return $tree; |
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158 } |
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159 |
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160 |
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161 sub parse_html($) |
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162 { |
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163 return undef unless defined($_[0]); |
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164 my $str = $_[0]; |
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165 my $res = { "name" => "", "args" => "" }; |
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166 $str =~ tr/\r/ /; |
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167 $str =~ tr/\n/ /; |
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168 my @tokens = grep { !($_ =~ /^\s*$/) } split(/(<\/?[a-zA-Z]+.*?>)/, $str); |
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169 parse_html_tree(\@tokens, $res); |
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170 return $res; |
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171 } |
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172 |
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173 sub html_find_node($$$); |
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174 |
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175 sub html_find_node($$$) |
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176 { |
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177 my ($node, $name, $args) = @_; |
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178 |
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179 if (defined($node)) { |
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180 if (ref($node) eq "ARRAY") { |
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181 foreach my $n (@$node) { |
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182 my $tmp = html_find_node($n, $name, $args); |
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183 # Must do it like this, in order not to break the loop |
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184 return $tmp if defined($tmp); |
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185 } |
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186 } elsif (ref($node) eq "HASH") { |
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187 if (defined($$node{"name"})) { |
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188 if ($$node{"name"} eq $name) { |
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189 if ($args ne "") { |
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190 if (defined($$node{"args"}) && $$node{"args"} =~ /$args/) { |
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191 } else { |
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192 return html_find_node($$node{"nodes"}, $name, $args); |
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193 } |
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194 } |
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195 return $node; |
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196 } else { |
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197 return html_find_node($$node{"nodes"}, $name, $args); |
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198 } |
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199 } |
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200 } |
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201 } |
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202 return undef; |
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203 } |
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204 |
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205 |
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206 ### |
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207 ### Helper functions for locating/traversing nodes |
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208 ### in the parsed data tree structure. |
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209 ### |
158
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210 sub fnode($$) |
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211 { |
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212 return html_find_node($_[0], $_[1], ""); |
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213 } |
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214 |
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215 |
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216 sub fnodea($$$) |
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217 { |
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218 return html_find_node($_[0], $_[1], $_[2]); |
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219 } |
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220 |
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221 |
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222 sub get_node($$$) |
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223 { |
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224 return defined($_[0]->[$_[2]]{"nodes"}[0]{$_[1]}) ? $_[0]->[$_[2]]{"nodes"}[0]{$_[1]} : ""; |
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225 } |
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226 |
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227 |
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228 ### |
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229 ### Configuration handling |
164
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230 ### |
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231 sub opt_chk_bool($) |
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232 { |
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233 if (defined($settings{$_[0]})) |
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234 { |
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235 my $val = $settings{$_[0]}; |
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236 return ($val == 1 || $val eq "true" || $val eq "on" || $val eq "1"); |
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237 } |
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238 else |
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239 { |
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240 return 0; |
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241 } |
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242 } |
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243 |
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244 |
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245 sub opt_chk_valid($$) |
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246 { |
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247 if (defined($settings{$_[0]})) |
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248 { |
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249 my $val = $settings{$_[0]}; |
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250 return length($val) >= $_[1]; |
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251 } |
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252 else |
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253 { |
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254 return 0; |
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255 } |
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256 } |
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257 |
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258 |
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259 sub opt_get($) |
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260 { |
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261 if (defined($settings{$_[0]})) |
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262 { |
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263 return $settings{$_[0]}; |
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264 } |
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265 else |
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266 { |
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267 return undef; |
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268 } |
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269 } |
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270 |
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271 |
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272 sub opt_read_config($) |
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273 { |
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274 my $filename = $_[0]; |
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275 my $errors = 0; |
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276 my $line = 0; |
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277 |
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278 open(CONFFILE, "<", $filename) or die("Could not open configuration '".$filename."'!\n"); |
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279 while (<CONFFILE>) |
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280 { |
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281 $line++; |
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282 chomp; |
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283 if (/(^\s*#|^\s*$)/) { |
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284 # Ignore comments and empty lines |
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285 } elsif (/^\s*\"?([a-zA-Z0-9_]+)\"?\s*=>?\s*(\d+),?\s*$/) { |
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286 my $key = lc($1); |
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287 my $value = $2; |
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288 if (defined($settings{$key})) { |
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289 $settings{$key} = $value; |
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290 } else { |
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291 mlog("[$filename:$line] Unknown setting '$key' = $value\n"); |
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292 $errors = 1; |
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293 } |
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294 } elsif (/^\s*\"?([a-zA-Z0-9_]+)\"?\s*=>?\s*\"(.*?)\",?\s*$/) { |
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295 my $key = lc($1); |
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296 my $value = $2; |
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297 if (defined($settings{$key})) { |
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298 $settings{$key} = $value; |
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299 } else { |
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300 mlog("[$filename:$line] Unknown setting '$key' = '$value'\n"); |
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301 $errors = 1; |
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302 } |
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303 } else { |
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304 mlog("[$filename:$line] Syntax error: $_\n"); |
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305 $errors = 1; |
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306 } |
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307 } |
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308 close(CONFFILE); |
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309 return $errors; |
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310 } |
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311 |
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312 |
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313 ### |
158
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314 ### Main program begins |
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315 ### |
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316 my $weatherdata = {}; |
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317 |
164
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318 die( |
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319 "Weather Fetch v0.1 by ccr/TNSP <ccr\@tnsp.org>\n". |
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320 "Usage: $0 <config file>\n" |
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321 ) unless scalar(@ARGV) >= 1; |
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322 |
178
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323 my $cfgfile = shift; |
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324 opt_read_config($cfgfile) == 0 or die("Errors while parsing configuration file '".$cfgfile."'.\n"); |
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325 |
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326 |
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327 ### |
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328 ### Fetch tiehallinto road weather measurement data |
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329 ### |
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330 if (opt_chk_bool("opt_tiehallinto")) |
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331 { |
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332 for (my $i = 1; $i <= 22; $i++) |
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333 { |
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334 my $res = fetch_http("http://alk.tiehallinto.fi/alk/tiesaa/tiesaa_maak_".$i.".html"); |
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335 if ($res->code >= 200 && $res->code <= 201) |
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336 { |
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337 my $data = $res->decoded_content; |
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338 |
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339 # Filter out crap tags we don't want or need |
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340 $data =~ s/\n/§/g; |
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341 $data =~ s/<!--.*?-->//ig; |
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342 $data =~ s/<map[^>]*>.*?<\/map>//ig; |
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343 $data =~ s/<form[^>]*>.*?<\/form>//ig; |
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344 $data =~ s/<script[^>]*>.*?<\/script>//ig; |
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345 $data =~ s/<meta[^>]*>//ig; |
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346 $data =~ s/<font[^>]*>//ig; |
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347 $data =~ s/<\/font>//ig; |
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348 $data =~ s/<span[^>]*>//ig; |
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349 $data =~ s/<\/span>//ig; |
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350 $data =~ s/<\/?b>//ig; |
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351 |
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352 $data =~ s/<br>//ig; |
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353 $data =~ s/ / /ig; |
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354 $data =~ s/§/\n/g; |
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355 |
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356 # Parse the HTML mess |
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357 my $otree = parse_html($data); |
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358 |
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359 # Find our desired element nodes |
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360 my $odata = fnodea(fnode($otree, "body"), "div", "class=elementc"); |
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361 my $oupdate = fnode($odata, "p"); |
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362 my $time_base = Time::Piece->strptime("00:00", "%H:%M")->epoch; |
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363 if ($oupdate) { |
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364 my $tmp = $oupdate->{"nodes"}[0]{"text"}; |
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365 if ($tmp =~ /:\s+(\d\d\.\d\d\.\d\d\d\d)\s+(\d\d:\d\d)/) { |
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366 $time_base = Time::Piece->strptime($1, "%Od.%Om.%Y")->epoch; |
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367 } |
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368 } |
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369 |
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370 my $oelems = fnode($odata, "table")->{"nodes"}; |
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371 for (my $n = 1; $n < scalar(@$oelems); $n++) |
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372 { |
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373 my $fdata = @$oelems[$n]->{"nodes"}; |
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374 $weatherdata->{$fdata->[0]{"nodes"}[0]{"text"}} = |
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375 [ |
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376 parse_timestamp(get_node($fdata, "text", 1), $time_base), |
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377 get_node($fdata, "text", 2), |
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378 get_node($fdata, "text", 3), |
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379 get_node($fdata, "text", 4), |
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380 ]; |
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381 } |
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382 } |
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383 } |
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384 } |
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385 |
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386 |
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387 ### |
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388 ### Fetch FMI data |
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389 ### |
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390 if (opt_chk_bool("opt_fmi")) |
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391 { |
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392 die("FMI data scrape enabled, but no API key set.\n") unless opt_chk_valid("fmi_api_key", 10); |
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393 |
189 | 394 my $uri = "http://data.fmi.fi/fmi-apikey/".opt_get("fmi_api_key"). |
395 "/wfs?request=getFeature&storedquery_id=fmi::observations::weather::". | |
396 "multipointcoverage". | |
397 # "timevaluepair". | |
398 "&starttime=".gmt_time_fmt(time() - 10*60)."&endtime=".gmt_time_fmt(time()). | |
399 "¶meters=temperature,humidity&maxlocations=50&bbox=19,59,32,70"; | |
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400 |
189 | 401 print STDERR "FMI URI: ".$uri."\n" if opt_chk_bool("debug"); |
402 | |
403 my $res = fetch_http($uri); | |
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404 if ($res->code >= 200 && $res->code <= 201) |
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405 { |
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406 my $xml = XMLin($res->decoded_content); |
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407 my $time_base = time(); |
189 | 408 my $fdata = $xml->{"wfs:member"}{"omso:GridSeriesObservation"}; |
409 | |
410 my $fshit = $fdata->{"om:result"}{"gmlcov:MultiPointCoverage"}; | |
411 my @farray = (); | |
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412 |
189 | 413 foreach my $fline (split(/\n/, $fshit->{"gml:domainSet"}{"gmlcov:SimpleMultiPoint"}{"gmlcov:positions"})) |
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414 { |
189 | 415 if ($fline =~ /^\s*([\+\-]?\d+\.\d*)\s+([\+\-]?\d+\.\d*)\s+(\d+)\s*$/) |
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416 { |
189 | 417 push(@farray, {"lat" => $1, "long" => $2, "time" => $3}); |
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418 } |
189 | 419 } |
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420 |
189 | 421 my $findex = 0; |
422 foreach my $fline (split(/\n/, $fshit->{"gml:rangeSet"}{"gml:DataBlock"}{"gml:doubleOrNilReasonTupleList"})) | |
423 { | |
424 if ($fline =~ /^\s*([\+\-]?\d+\.\d*|NaN)\s+([\+\-]?\d+\.\d*|NaN)\s*$/) | |
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425 { |
189 | 426 $farray[$findex]{"temp"} = $1 if ($1 ne "NaN"); |
427 $farray[$findex]{"humidity"} = $2 if ($2 ne "NaN"); | |
428 $findex++; | |
429 } | |
430 } | |
190 | 431 # XXX Hashify the array into lat/long keys |
189 | 432 |
190 | 433 # This is horrible :S |
189 | 434 my $fcrap = $fdata->{"om:featureOfInterest"}{"sams:SF_SpatialSamplingFeature"}{"sams:shape"}{"gml:MultiPoint"}{"gml:pointMember"}; |
435 foreach my $fnode (@{$fcrap}) | |
436 { | |
437 my $floc = $fnode->{"gml:Point"}; | |
438 if ($floc->{"gml:pos"} =~ /^\s*([\+\-]?\d+\.\d*)\s+([\+\-]?\d+\.\d*)\s*$/) | |
439 { | |
440 my ($flat, $flong) = ($1, $2); | |
190 | 441 # Should use a hash - |
189 | 442 foreach my $flol (@farray) |
443 { | |
444 if ($flol->{"lat"} == $flat && $flol->{"long"} == $flong) | |
445 { | |
446 $weatherdata->{$floc->{"gml:name"}} = [ | |
447 $flol->{"time"}, | |
448 $flol->{"temp"}, | |
449 "", | |
450 "", | |
451 defined($flol->{"humidity"}) ? $flol->{"humidity"} : "", | |
452 ]; | |
453 } | |
454 } | |
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455 } |
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456 } |
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457 } |
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458 } |
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459 |
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460 |
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461 ### |
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462 ### Output |
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463 ### |
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464 if (opt_chk_valid("outfile", 1)) { |
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465 open(STDOUT, '>', opt_get("outfile")) or die("Could not open output file '".opt_get("outfile")."'.\n"); |
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466 } |
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467 |
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468 binmode STDOUT, ':encoding(utf-8)'; |
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469 |
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470 foreach my $key (sort { $a cmp $b } keys %$weatherdata) |
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471 { |
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472 print STDOUT $key."|".join("|", @{$weatherdata->{$key}})."\n"; |
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473 } |
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474 |
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475 close(STDOUT); |