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January 4, 2016 11:09
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base60 in xquery. Look at shortURLB60.xq first
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| xquery version "3.0"; | |
| let $createShortDate := function ($date){ | |
| let $nYear := substring(format-date($date, "[Y]", 'en', (), ()), 3, 4) | |
| let $nDaysOfYear := format-date($date, "[d]", 'en', (), ()) | |
| let $padDaysOfYear := | |
| if( string-length($nDaysOfYear) = 1) then ( '0' || '0' || $nDaysOfYear ) | |
| else if( string-length($nDaysOfYear) = 2) then ( '0' || $nDaysOfYear ) | |
| else($nDaysOfYear) | |
| let $nStr := $nYear || $padDaysOfYear | |
| return $nStr | |
| } | |
| let $base60Chars := | |
| let $seq1 := (0 to 9) | |
| let $seq2 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('A') to string-to-codepoints('H')) | |
| let $seq3 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('J') to string-to-codepoints('N')) | |
| let $seq4 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('P') to string-to-codepoints('Z')) | |
| let $seq5 := ('_') | |
| let $seq6 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('a') to string-to-codepoints('k')) | |
| let $seq7 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('m') to string-to-codepoints('z')) | |
| return ($seq1, $seq2, $seq3, $seq4, $seq5 , $seq6, $seq7) | |
| let $base := count($base60Chars) | |
| let $encode := function ($n){ | |
| let $seqChars := $base60Chars | |
| let $getRemainder := function($n){ | |
| if($n gt 59 ) then (($n mod xs:integer($base)) + 1) | |
| else($n + 1) | |
| } | |
| let $getChar := function($n){$seqChars[xs:integer($getRemainder($n))]} | |
| let $nextN := function($n){ | |
| ($n - xs:integer($getRemainder($n))) div xs:integer($base)} | |
| let $seqNth := ( xs:integer($nextN($nextN($n))), xs:integer($nextN($n)) , xs:integer($n) ) | |
| return | |
| string-join(map(function($n){$seqChars[xs:integer($getRemainder($n))]}, $seqNth),'') | |
| } | |
| let $decode := function ($strB60){ | |
| let $seqDecode := | |
| map(function( $codePoint ){ | |
| let $c := xs:integer($codePoint) | |
| return | |
| if ($c >= 48 and $c <= 57 ) then ($c - 48) | |
| else if ($c >= 65 and $c <= 72 ) then ($c - 55) | |
| else if ($c eq 73 or $c eq 108 ) then (1) | |
| else if ($c >= 74 and $c <= 78 ) then ($c - 56) | |
| else if ($c eq 79 ) then (0) | |
| else if ($c >= 80 and $c <= 90 ) then ($c - 57) | |
| else if ($c eq 95 ) then (34) | |
| else if ($c >= 97 and $c <= 107 ) then ($c - 62) | |
| else if ($c >= 109 and $c <= 122 ) then ($c - 63) | |
| else(0) | |
| }, | |
| (map(function($ch){string-to-codepoints($ch)}, (for $ch in string-to-codepoints($strB60) | |
| return codepoints-to-string($ch))) | |
| )) | |
| let $tot := function($n2, $c){xs:integer(($base * $n2) + $c + 1)} | |
| let $n2 := 0 | |
| let $dc1 := $tot($n2, $seqDecode[1]) | |
| let $dc2 := $tot($dc1, $seqDecode[2]) | |
| let $decoded := $tot($dc2, $seqDecode[3] -1 ) | |
| let $yr := '20' || substring($decoded, 1, 2) | |
| let $yrStart := xs:date($yr || string('-01-01')) | |
| let $dysInYr := substring($decoded, 3, 6) | |
| let $duration := xs:dayTimeDuration("P" || string(xs:integer($dysInYr)- 1) || "D") | |
| let $decodedDate := xs:date($yrStart + $duration) | |
| let $formatedDate := format-date($decodedDate, "[Y0001]/[M01]/[D01]", 'en', (), ()) | |
| return $formatedDate | |
| } | |
| (: TEST | |
| Random date via current-date + duration | |
| encode decode | |
| :) | |
| let $strDuration := xs:dayTimeDuration("P" || string(xs:integer(util:random(1000))- 1) || "D") | |
| let $date := current-date() + $strDuration | |
| let $shortDate := $createShortDate($date) | |
| let $encoded := $encode(xs:integer($shortDate)) | |
| let $decoded := $decode($encoded) | |
| return | |
| ( | |
| ('date: '|| $date ), | |
| ('$shortDate: '|| $shortDate ), | |
| ('$base60Chars: '|| string-join($base60Chars) ), | |
| ('$encoded: '|| $encoded ), | |
| ('$decoded: '|| $decoded ), | |
| ('$strDuration: '|| current-date() + $strDuration ) | |
| ) |
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| <target name="get-short-link"> | |
| <property name="q_encode"> | |
| xquery version "3.0"; | |
| let $encode := function ($n){ | |
| let $seq1 := (0 to 9) | |
| let $seq2 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('A') to string-to-codepoints('H')) | |
| let $seq3 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('J') to string-to-codepoints('N')) | |
| let $seq4 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('P') to string-to-codepoints('Z')) | |
| let $seq5 := ('_') | |
| let $seq6 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('a') to string-to-codepoints('k')) | |
| let $seq7 := map(function($x) { codepoints-to-string($x) }, string-to-codepoints('m') to string-to-codepoints('z')) | |
| let $seqChars := ($seq1, $seq2, $seq3, $seq4, $seq5 , $seq6, $seq7) | |
| let $base := count($seqChars) | |
| let $getRemainder := function($n){ | |
| if($n gt 59 ) then (($n mod xs:integer($base)) + 1) | |
| else($n + 1) | |
| } | |
| let $getChar := function($n){$seqChars[xs:integer($getRemainder($n))]} | |
| let $nextN := function($n){ | |
| ($n - xs:integer($getRemainder($n))) div xs:integer($base)} | |
| let $seqNth := ( xs:integer($nextN($nextN($n))), xs:integer($nextN($n)) , xs:integer($n) ) | |
| return | |
| string-join(map(function($n){$seqChars[xs:integer($getRemainder($n))]}, $seqNth),'') | |
| } | |
| return | |
| $encode(${n}) | |
| </property> | |
| <xdb:xquery | |
| uri="xmldb:exist://${host.local}:8080/exist/xmlrpc/db" | |
| query="${q_encode}" user="${exist.username}" | |
| password="${exist.password}" | |
| outputproperty="encoded" /> | |
| <echo>${encoded}</echo> | |
| </target> |
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| xquery version "3.0"; | |
| declare default element namespace "http://www.w3.org/2005/Atom"; | |
| declare variable $exist:path external; | |
| declare variable $exist:resource external; | |
| declare variable $exist:controller external; | |
| declare variable $exist:prefix external; | |
| declare variable $exist:root external; | |
| import module namespace xmldb="http://exist-db.org/xquery/xmldb"; | |
| if (matches($exist:path ,'^/[0-9A-HJ-NP-Z_a-km-z]{3}[0-9]{1,2}\.html$')) then( | |
| let $strID := replace($exist:path, '^/([0-9A-HJ-NP-Z_a-km-z]{3}[0-9]{1,2})\.html$', '$1') | |
| let $strB60 := replace($exist:path, '^/([0-9A-HJ-NP-Z_a-km-z]{3})[0-9]{1,2}\.html$', '$1') | |
| let $base := 60 | |
| (: The entry point is $strB60 :) | |
| let $seqDecode := | |
| map(function( $codePoint ){ | |
| let $c := xs:integer($codePoint) | |
| return | |
| if ($c >= 48 and $c <= 57 ) then ($c - 48) | |
| else if ($c >= 65 and $c <= 72 ) then ($c - 55) | |
| else if ($c eq 73 or $c eq 108 ) then (1) | |
| else if ($c >= 74 and $c <= 78 ) then ($c - 56) | |
| else if ($c eq 79 ) then (0) | |
| else if ($c >= 80 and $c <= 90 ) then ($c - 57) | |
| else if ($c eq 95 ) then (34) | |
| else if ($c >= 97 and $c <= 107 ) then ($c - 62) | |
| else if ($c >= 109 and $c <= 122 ) then ($c - 63) | |
| else(0) | |
| }, | |
| (map(function($ch){string-to-codepoints($ch)}, (for $ch in string-to-codepoints($strB60) | |
| return codepoints-to-string($ch))) | |
| )) | |
| let $tot := function($n2, $c){xs:integer(($base * $n2) + $c + 1)} | |
| let $n2 := 0 | |
| let $dc1 := $tot($n2, $seqDecode[1]) | |
| let $dc2 := $tot($dc1, $seqDecode[2]) | |
| let $decoded := $tot($dc2, $seqDecode[3] -1 ) | |
| let $yr := '20' || substring($decoded, 1, 2) | |
| let $yrStart := xs:date($yr || string('-01-01')) | |
| let $dysInYr := substring($decoded, 3, 6) | |
| let $duration := xs:dayTimeDuration("P" || string(xs:integer($dysInYr)- 1) || "D") | |
| let $decodedDate := xs:date($yrStart + $duration) | |
| let $formatedDate := format-date($decodedDate, "[Y0001]/[M01]/[D01]", 'en', (), ()) | |
| let $colPath := concat( $exist:root , $exist:controller , '/data/archive/' , $formatedDate ) | |
| let $redirect := | |
| if( xmldb:collection-available( $colPath ) ) then ( | |
| if( exists(xmldb:xcollection($colPath)//id[contains(., $strID)] )) then ( | |
| xmldb:xcollection($colPath)//*[id[contains(., $strID)]]/link[@rel="alternate"]/@href/string() | |
| ) | |
| else( 'http://' || $exist:controller || '/' || 'collection-not-available' || '/' || $strB60 || '/' || $strID || '/' || $formatedDate ) | |
| ) | |
| else( 'http://' || $exist:controller || '/' || 'id-not-found' || '/' || $strB60 || '/' || $strID || '/' || $formatedDate ) | |
| return | |
| <dispatch xmlns="http://exist.sourceforge.net/NS/exist"> | |
| <redirect url="{$redirect}"/> | |
| </dispatch> | |
| ) | |
| else if (ends-with($exist:resource, ".html")) then | |
| let $template-pages := '/templates/pages/' | |
| let $template-posts := '/templates/posts/' | |
| let $collection := if( matches($exist:path ,'^/index.html$'))then ('home') | |
| else(tokenize($exist:path, '/')[2]) | |
| let $colURL := | |
| if( matches( $exist:path , '^/archive/index.html$')) then ( | |
| $exist:controller || $template-posts || 'feed' || '.html' | |
| ) | |
| else if( contains( $exist:path , 'archive/' )) then ( | |
| $exist:controller || $template-posts || 'entry' || '.html' | |
| ) | |
| else( | |
| $exist:controller || $template-pages || $collection || '.html' | |
| ) | |
| let $errorURL := $exist:controller || $template-pages || 'error.html' | |
| let $viewURL := $exist:controller || '/modules/view.xql' | |
| return | |
| <dispatch xmlns="http://exist.sourceforge.net/NS/exist"> | |
| <forward method="get" url="{$colURL}" /> | |
| <view> | |
| <forward url="{$viewURL}"> | |
| <add-parameter name="exist-root" value="{$exist:root}" /> | |
| <add-parameter name="exist-prefix" value="{$exist:prefix}" /> | |
| <add-parameter name="exist-controller" value="{$exist:controller}" /> | |
| <add-parameter name="exist-resource" value="{$exist:resource}" /> | |
| <add-parameter name="exist-path" value="{$exist:path}" /> | |
| </forward> | |
| </view> | |
| <error-handler> | |
| <forward method="get" url="{$errorURL}" /> | |
| <forward url="{$viewURL}" /> | |
| </error-handler> | |
| </dispatch> | |
| else | |
| <dispatch xmlns="http://exist.sourceforge.net/NS/exist"> | |
| <cache-control cache="yes" /> | |
| </dispatch> |
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For creating short-urls for tweets etc. Origin url based on date 'year/month/day'
will become 3 char, the total uri path can become just 4 chars the last char being the nth post of the day
based on tantek base 60 http://tantek.pbworks.com/w/page/19402946/NewBase60.