DatesRole: support standard output of date(1).
- Convert to ISO-8601 for the parse. - Support short month to number in service of above. - Support TZ to UTC offset in service of above. In cases where the TZ abbreviation was ambiguous I selected what I deemed to be the most populous or most likely to be a DDG user's intent. I may, of course, be wrong. Fixes #621.master
Matt Miller
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commit
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@ -13,6 +13,21 @@ use Try::Tiny;
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# This appears to parse most/all of the big ones, however it doesn't present a regex
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use DateTime::Format::HTTP;
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my %short_month_to_number = (
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jan => 1,
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feb => 2,
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mar => 3,
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apr => 4,
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may => 5,
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jun => 6,
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jul => 7,
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aug => 8,
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sep => 9,
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oct => 10,
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nov => 11,
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dec => 12,
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);
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# Reused lists and components for below
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my $short_day_of_week = qr#Mon|Tue|Wed|Thu|Fri|Sat|Sun#i;
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my $full_day_of_week = qr#Monday|Tuesday|Wednesday|Thursday|Friday|Saturday|Sunday#i;
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@ -35,7 +50,191 @@ my $ambiguous_dates_matches = qr#^(?<m>$date_number)$date_delim(?<d>$date_number
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my $number_suffixes = qr#(?:st|nd|rd|th)#i;
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# Timezones: https://en.wikipedia.org/wiki/List_of_time_zone_abbreviations
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my $tz_suffixes = qr#(?:[+-][0-9]{4})|ACDT|ACST|ACT|ADT|AEDT|AEST|AFT|AKDT|AKST|AMST|AMT|ART|AST|AWDT|AWST|AZOST|AZT|BDT|BIOT|BIT|BOT|BRT|BST|BTT|CAT|CCT|CDT|CEDT|CEST|CET|CHADT|CHAST|CHOT|CHUT|CIST|CIT|CKT|CLST|CLT|COST|COT|CST|CT|CVT|CWST|CXT|ChST|DAVT|DDUT|DFT|EASST|EAST|EAT|ECT|EDT|EEDT|EEST|EET|EGST|EGT|EIT|EST|FET|FJT|FKST|FKT|FNT|GALT|GAMT|GET|GFT|GILT|GIT|GMT|GST|GYT|HADT|HAEC|HAST|HKT|HMT|HOVT|HST|ICT|IDT|IOT|IRDT|IRKT|IRST|IST|JST|KGT|KOST|KRAT|KST|LHST|LINT|MAGT|MART|MAWT|MDT|MEST|MET|MHT|MIST|MIT|MMT|MSK|MST|MUT|MVT|MYT|NCT|NDT|NFT|NPT|NST|NT|NUT|NZDT|NZST|OMST|ORAT|PDT|PET|PETT|PGT|PHOT|PHT|PKT|PMDT|PMST|PONT|PST|PYST|PYT|RET|ROTT|SAKT|SAMT|SAST|SBT|SCT|SGT|SLST|SRT|SST|SYOT|TAHT|TFT|THA|TJT|TKT|TLT|TMT|TOT|TVT|UCT|ULAT|UTC|UYST|UYT|UZT|VET|VLAT|VOLT|VOST|VUT|WAKT|WAST|WAT|WEDT|WEST|WET|WIT|WST|YAKT|YEKT|Z#i;
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my %tz_offsets = (
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ACDT => '+1030',
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ACST => '+0930',
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ACT => '+0800',
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ADT => '-0300',
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AEDT => '+1100',
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AEST => '+1000',
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AFT => '+0430',
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AKDT => '-0800',
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AKST => '-0900',
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AMST => '-0300',
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AMT => '-0400',
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ART => '-0300',
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AST => '+0300',
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AWDT => '+0900',
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AWST => '+0800',
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AZOST => '-0100',
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AZT => '+0400',
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BDT => '+0800',
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BIOT => '+0600',
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BIT => '-1200',
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BOT => '-0400',
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BRT => '-0300',
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BST => '+0100',
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BTT => '+0600',
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CAT => '+0200',
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CCT => '+0630',
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CDT => '-0500',
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CEDT => '+0200',
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CEST => '+0200',
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CET => '+0100',
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CHADT => '+1345',
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CHAST => '+1245',
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CHOT => '+0800',
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CHUT => '+1000',
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CIST => '-0800',
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CIT => '+0800',
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CKT => '-1000',
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CLST => '-0300',
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CLT => '-0400',
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COST => '-0400',
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COT => '-0500',
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CST => '-0600',
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CT => '+0800',
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CVT => '-0100',
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CWST => '+0845',
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CXT => '+0700',
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ChST => '+1000',
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DAVT => '+0700',
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DDUT => '+1000',
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DFT => '+0100',
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EASST => '-0500',
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EAST => '-0600',
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EAT => '+0300',
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ECT => '-0400',
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EDT => '-0400',
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EEDT => '+0300',
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EEST => '+0300',
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EET => '+0200',
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EGST => '+0000',
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EGT => '-0100',
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EIT => '+0900',
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EST => '-0500',
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FET => '+0300',
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FJT => '+1200',
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FKST => '-0300',
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FKT => '-0400',
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FNT => '-0200',
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GALT => '-0600',
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GAMT => '-0900',
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GET => '+0400',
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GFT => '-0300',
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GILT => '+1200',
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GIT => '-0900',
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GMT => '+0000',
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GST => '-0200',
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GYT => '-0400',
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HADT => '-0900',
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HAEC => '+0200',
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HAST => '-1000',
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HKT => '+0800',
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HMT => '+0500',
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HOVT => '+0700',
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HST => '-1000',
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ICT => '+0700',
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IDT => '+0300',
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IOT => '+0300',
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IRDT => '+0430',
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IRKT => '+0900',
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IRST => '+0330',
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IST => '+0530',
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JST => '+0900',
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KGT => '+0600',
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KOST => '+1100',
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KRAT => '+0700',
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KST => '+0900',
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LHST => '+1030',
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LINT => '+1400',
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MAGT => '+1200',
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MART => '-0930',
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MAWT => '+0500',
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MDT => '-0600',
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MEST => '+0200',
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MET => '+0100',
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MHT => '+1200',
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MIST => '+1100',
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MIT => '-0930',
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MMT => '+0630',
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MSK => '+0400',
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MST => '-0700',
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MUT => '+0400',
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MVT => '+0500',
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MYT => '+0800',
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NCT => '+1100',
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NDT => '-0230',
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NFT => '+1130',
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NPT => '+0545',
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NST => '-0330',
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NT => '-0330',
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NUT => '-1100',
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NZDT => '+1300',
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NZST => '+1200',
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OMST => '+0700',
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ORAT => '-0500',
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PDT => '-0700',
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PET => '-0500',
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PETT => '+1200',
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PGT => '+1000',
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PHOT => '+1300',
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PKT => '+0500',
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PMDT => '-0200',
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PMST => '-0300',
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PONT => '+1100',
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PST => '-0800',
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PYST => '-0300',
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PYT => '-0400',
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RET => '+0400',
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ROTT => '-0300',
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SAKT => '+1100',
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SAMT => '+0400',
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SAST => '+0200',
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SBT => '+1100',
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SCT => '+0400',
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SGT => '+0800',
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SLST => '+0530',
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SRT => '-0300',
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SST => '-1100',
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SYOT => '+0300',
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TAHT => '-1000',
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TFT => '+0500',
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THA => '+0700',
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TJT => '+0500',
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TKT => '+1300',
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TLT => '+0900',
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TMT => '+0500',
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TOT => '+1300',
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TVT => '+0500',
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UCT => '+0000',
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ULAT => '+0800',
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UTC => '+0000',
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UYST => '-0200',
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UYT => '-0300',
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UZT => '+0500',
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VET => '-0430',
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VLAT => '+1000',
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VOLT => '+0400',
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VOST => '+0600',
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VUT => '+1100',
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WAKT => '+1200',
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WAST => '+0200',
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WAT => '+0100',
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WEDT => '+0100',
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WEST => '+0100',
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WET => '+0000',
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WIT => '+0700',
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WST => '+0800',
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YAKT => '+1000',
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YEKT => '+0600',
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Z => '+0000',
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);
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my $tz_strings = join('|', keys %tz_offsets);
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my $tz_suffixes = qr#(?:[+-][0-9]{4})|$tz_strings#i;
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my $date_standard = qr#$short_day_of_week $short_month\s{1,2}$date_number $time_24h $tz_suffixes [0-9]{4}#i;
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my $date_standard_matches = qr#$short_day_of_week (?<m>$short_month)\s{1,2}(?<d>$date_number) (?<t>$time_24h) (?<tz>$tz_suffixes) (?<y>[0-9]{4})#i;
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# formats parsed by vague datestring, without colouring
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# the context of the code using it
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@ -104,6 +303,9 @@ sub build_datestring_regex {
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# RFC850 08-Feb-94 14:15:29 GMT
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push @regexes, qr#[0-9]{2}-$short_month-(?:[0-9]{2}|[0-9]{4}) $time_24h?(?: ?$tz_suffixes)#i;
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# date(1) default format Sun Sep 7 15:57:56 EDT 2014
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push @regexes, $date_standard;
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# month-first date formats
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push @regexes, qr#$date_number$date_delim$short_month$date_delim[0-9]{4}#i;
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push @regexes, qr#$date_number$date_delim$full_month$date_delim[0-9]{4}#i;
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@ -145,6 +347,9 @@ sub parse_formatted_datestring_to_date {
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}
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$d = sprintf("%04d-%02d-%02d", $year, $month, $day);
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} elsif ($d =~ $date_standard_matches) {
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# To ISO8601 for parsing
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$d = sprintf('%04d-%02d-%02dT%s%s', $+{'y'}, $short_month_to_number{lc $+{'m'}}, $+{'d'}, $+{'t'}, $tz_offsets{$+{'tz'}});
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}
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$d =~ s/(\d+)\s?$number_suffixes/$1/i; # Strip ordinal text.
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@ -86,6 +86,10 @@ subtest 'Dates' => sub {
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'Sat, 09 Aug 2014 18:20:00' => 1407608400,
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# RFC850
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'08-Feb-94 14:15:29 GMT' => 760716929,
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# date(1) default
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'Sun Sep 7 15:57:56 EDT 2014' => 1410119876,
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'Sun Sep 14 15:57:56 UTC 2014' => 1410710276,
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'Sun Sep 7 20:11:44 BST 2014' => 1410117104,
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#Undefined/Natural formats:
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'13/12/2011' => 1323734400, #DMY
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'01/01/2001' => 978307200, #Ambiguous, but valid
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