build: generate timezone offsets too in zoneinfo2lua.pl

libs/http:	drop zoneinfo information in luci.http.protocol.data, use luci.sys.zoneinfo instead
libs/sys:	refresh zoneinfo information

3 files changed, 255 insertions, 123 deletions

diff --git a/build/zoneinfo2lua.pl b/build/zoneinfo2lua.pl
index fdcc3d60e..7e772c0af 100644
--- a/build/zoneinfo2lua.pl
+++ b/build/zoneinfo2lua.pl
@@ -65,4 +65,74 @@ foreach my $zone ( sort keys %TZ ) {
 	printf "\t{ '%s', '%s' },\n", $zone, $TZ{$zone}
 }
 
+print <<HEAD;
+}
+
+OFFSET = {
+HEAD
+
+my %seen;
+foreach my $tz ( sort keys %TZ ) {
+	my $zone = $TZ{$tz};
+
+	if( $zone =~ /^
+		([A-Z]+)
+		(?:
+			( -? \d+ (?: : \d+ )? )
+			(?:
+				([A-Z]+)
+				( -? \d+ (?: : \d+ )? )? 
+			)?
+		)?
+	\b /xo ) {
+		my ( $offset, $s, $h, $m ) = ( 0, 1, 0, 0 );
+		my ( $std, $soffset, $dst, $doffset ) = ( $1, $2, $3, $4 );
+
+		next if $seen{$std}; # and ( !$dst or $seen{$dst} );
+
+		if ( $soffset ) {
+			( $s, $h, $m ) = $soffset =~ /^(-)?(\d+)(?::(\d+))?$/;
+
+			$s = $s ? 1 : -1;
+			$h ||= 0;
+			$m ||= 0;
+
+			$offset  = $s * $h * 60 * 60;
+			$offset += $s * $m * 60;
+
+			printf("\t%-5s = %6d,\t-- %s\n",
+				lc($std), $offset, $std);
+
+			$seen{$std} = 1;
+
+			if( $dst ) {
+				if( $doffset ) {
+					( $s, $h, $m ) = $doffset =~ /^(-)?(\d+)(?::(\d+))?$/;
+
+					$s = $s ? 1 : -1;
+					$h ||= 0;
+					$m ||= 0;
+
+					$offset  = $s * $h * 60 * 60;
+					$offset += $s * $m * 60;
+				} else  {
+					$offset += 60 * 60;
+				}
+
+				printf("\t%-5s = %6d,\t-- %s\n",
+					lc($dst), $offset, $dst);
+	
+				$seen{$dst} = 1;
+			}
+		}
+		else {
+			printf("\t%-5s = %6d,\t-- %s\n",
+				lc($std), $offset, $std);
+
+			$seen{$std} = 1;
+		}
+
+	}
+}
+
 print "}\n";
diff --git a/libs/http/luasrc/http/protocol/date.lua b/libs/http/luasrc/http/protocol/date.lua
index 24da1bafb..83d11e2c2 100644
--- a/libs/http/luasrc/http/protocol/date.lua
+++ b/libs/http/luasrc/http/protocol/date.lua
@@ -17,116 +17,14 @@ $Id$
 -- This class contains functions to parse, compare and format http dates.
 module("luci.http.protocol.date", package.seeall)
 
+require("luci.sys.zoneinfo")
+
+
 MONTHS = {
 	"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug",
 	"Sep", "Oct", "Nov", "Dec"
 }
 
---- The "TZ" table contains lowercased timezone names associated with their
--- corresponding time offsets sepcified in seconds.
--- @class table
-TZ = {
-	-- DST zones
-	["brst"]  =   -2*3600;	 -- Brazil Summer Time (East Daylight)
-	["adt"]   =   -3*3600;	 -- Atlantic Daylight
-	["edt"]   =   -4*3600;	 -- Eastern Daylight
-	["cdt"]   =   -5*3600;	 -- Central Daylight
-	["mdt"]   =   -6*3600;	 -- Mountain Daylight
-	["pdt"]   =   -7*3600;	 -- Pacific Daylight
-	["ydt"]   =   -8*3600;	 -- Yukon Daylight
-	["hdt"]   =   -9*3600;	 -- Hawaii Daylight
-	["bst"]   =    1*3600;	 -- British Summer
-	["mest"]  =    2*3600;	 -- Middle European Summer
-	["sst"]   =    2*3600;	 -- Swedish Summer
-	["fst"]   =    2*3600;	 -- French Summer
-	["eest"]  =    3*3600;	 -- Eastern European Summer
-	["cest"]  =    2*3600;	 -- Central European Daylight
-	["wadt"]  =    8*3600;	 -- West Australian Daylight
-	["kdt"]   =   10*3600;	 -- Korean Daylight
-	["eadt"]  =   11*3600;	 -- Eastern Australian Daylight
-	["nzdt"]  =   13*3600;	 -- New Zealand Daylight
-
-	-- zones
-	["gmt"]   =   0;		 -- Greenwich Mean
-	["ut"]    =   0;		 -- Universal (Coordinated)
-	["utc"]   =   0;
-	["wet"]   =   0;		 -- Western European
-	["wat"]   =  -1*3600;	 -- West Africa
-	["azost"] =  -1*3600;	 -- Azores Standard Time
-	["cvt"]   =  -1*3600;	 -- Cape Verde Time
-	["at"]    =  -2*3600;	 -- Azores
-	["fnt"]   =  -2*3600;	 -- Brazil Time (Extreme East - Fernando Noronha)
-	["ndt"]   =  -2*3600+1800;-- Newfoundland Daylight
-	["art"]   =  -3*3600;	 -- Argentina Time
-	["nft"]   =  -3*3600+1800;-- Newfoundland
-	["mnt"]   =  -4*3600;	 -- Brazil Time (West Standard - Manaus)
-	["ewt"]   =  -4*3600;	 -- U.S. Eastern War Time
-	["ast"]   =  -4*3600;	 -- Atlantic Standard
-	["bot"]   =  -4*3600;	 -- Bolivia Time
-	["vet"]   =  -4*3600;	 -- Venezuela Time
-	["est"]   =  -5*3600;	 -- Eastern Standard
-	["cot"]   =  -5*3600;	 -- Colombia Time
-	["act"]   =  -5*3600;	 -- Brazil Time (Extreme West - Acre)
-	["pet"]   =  -5*3600;	 -- Peru Time
-	["cst"]   =  -6*3600;	 -- Central Standard
-	["cest"]  =   2*3600;	 -- Central European Summer
-	["mst"]   =  -7*3600;	 -- Mountain Standard
-	["pst"]   =  -8*3600;	 -- Pacific Standard
-	["yst"]   =  -9*3600;	 -- Yukon Standard
-	["hst"]   = -10*3600;	 -- Hawaii Standard
-	["cat"]   = -10*3600;	 -- Central Alaska
-	["ahst"]  = -10*3600;	 -- Alaska-Hawaii Standard
-	["taht"]  = -10*3600;	 -- Tahiti Time
-	["nt"]    = -11*3600;	 -- Nome
-	["idlw"]  = -12*3600;	 -- International Date Line West
-	["cet"]   =   1*3600;	 -- Central European
-	["mez"]   =   1*3600;	 -- Central European (German)
-	["met"]   =   1*3600;	 -- Middle European
-	["mewt"]  =   1*3600;	 -- Middle European Winter
-	["swt"]   =   1*3600;	 -- Swedish Winter
-	["set"]   =   1*3600;	 -- Seychelles
-	["fwt"]   =   1*3600;	 -- French Winter
-	["west"]  =   1*3600;	 -- Western Europe Summer Time
-	["eet"]   =   2*3600;	 -- Eastern Europe; USSR Zone 1
-	["ukr"]   =   2*3600;	 -- Ukraine
-	["sast"]  =   2*3600;	 -- South Africa Standard Time
-	["bt"]    =   3*3600;	 -- Baghdad; USSR Zone 2
-	["eat"]   =   3*3600;	 -- East Africa Time
-	["irst"]  =   3*3600+1800;-- Iran Standard Time
-	["zp4"]   =   4*3600;	 -- USSR Zone 3
-	["msd"]   =   4*3600;	 -- Moscow Daylight Time
-	["sct"]   =   4*3600;	 -- Seychelles Time
-	["zp5"]   =   5*3600;	 -- USSR Zone 4
-	["azst"]  =   5*3600;	 -- Azerbaijan Summer Time
-	["mvt"]   =   5*3600;	 -- Maldives Time
-	["uzt"]   =   5*3600;	 -- Uzbekistan Time
-	["ist"]   =   5*3600+1800;-- Indian Standard
-	["zp6"]   =   6*3600;	 -- USSR Zone 5
-	["lkt"]   =   6*3600;	 -- Sri Lanka Time
-	["pkst"]  =   6*3600;	 -- Pakistan Summer Time
-	["yekst"] =   6*3600;	 -- Yekaterinburg Summer Time
-	["wast"]  =   7*3600;	 -- West Australian Standard
-	["ict"]   =   7*3600;	 -- Indochina Time
-	["wit"]   =   7*3600;	 -- Western Indonesia Time
-	["cct"]   =   8*3600;	 -- China Coast; USSR Zone 7
-	["wst"]   =   8*3600;	 -- West Australian Standard
-	["hkt"]   =   8*3600;	 -- Hong Kong
-	["bnt"]   =   8*3600;	 -- Brunei Darussalam Time
-	["cit"]   =   8*3600;	 -- Central Indonesia Time
-	["myt"]   =   8*3600;	 -- Malaysia Time
-	["pht"]   =   8*3600;	 -- Philippines Time
-	["sgt"]   =   8*3600;	 -- Singapore Time
-	["jst"]   =   9*3600;	 -- Japan Standard; USSR Zone 8
-	["kst"]   =   9*3600;	 -- Korean Standard
-	["east"]  =  10*3600;	 -- Eastern Australian Standard
-	["gst"]   =  10*3600;	 -- Guam Standard; USSR Zone 9
-	["nct"]   =  11*3600;	 -- New Caledonia Time
-	["nzt"]   =  12*3600;	 -- New Zealand
-	["nzst"]  =  12*3600;	 -- New Zealand Standard
-	["fjt"]   =  12*3600;	 -- Fiji Time
-	["idle"]  =  12*3600;	 -- International Date Line East
-}
-
 --- Return the time offset in seconds between the UTC and given time zone.
 -- @param tz	Symbolic or numeric timezone specifier
 -- @return		Time offset to UTC in seconds
@@ -143,8 +41,8 @@ function tz_offset(tz)
 			return s * 60 * ( math.floor( v / 100 ) * 60 + ( v % 100 ) )
 
 		-- lookup symbolic tz
-		elseif TZ[tz:lower()] then
-			return TZ[tz:lower()]
+		elseif luci.sys.zoneinfo.OFFSET[tz:lower()] then
+			return luci.sys.zoneinfo.OFFSET[tz:lower()]
 		end
 
 	end
diff --git a/libs/sys/luasrc/sys/zoneinfo.lua b/libs/sys/luasrc/sys/zoneinfo.lua
index 7bd02d934..d6de70425 100644
--- a/libs/sys/luasrc/sys/zoneinfo.lua
+++ b/libs/sys/luasrc/sys/zoneinfo.lua
@@ -67,17 +67,18 @@ TZ = {
 	{ 'America/Anguilla', 'AST4' },
 	{ 'America/Antigua', 'AST4' },
 	{ 'America/Araguaina', 'BRT3' },
-	{ 'America/Argentina/Buenos Aires', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
-	{ 'America/Argentina/Catamarca', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
-	{ 'America/Argentina/Cordoba', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
-	{ 'America/Argentina/Jujuy', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
-	{ 'America/Argentina/La Rioja', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
-	{ 'America/Argentina/Mendoza', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
-	{ 'America/Argentina/Rio Gallegos', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
-	{ 'America/Argentina/San Juan', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
+	{ 'America/Argentina/Buenos Aires', 'ART3ARST,M10.3.0/0,M3.3.0/0' },
+	{ 'America/Argentina/Catamarca', 'ART3' },
+	{ 'America/Argentina/Cordoba', 'ART3ARST,M10.3.0/0,M3.3.0/0' },
+	{ 'America/Argentina/Jujuy', 'ART3' },
+	{ 'America/Argentina/La Rioja', 'ART3' },
+	{ 'America/Argentina/Mendoza', 'ART3' },
+	{ 'America/Argentina/Rio Gallegos', 'ART3' },
+	{ 'America/Argentina/Salta', 'ART3' },
+	{ 'America/Argentina/San Juan', 'ART3' },
 	{ 'America/Argentina/San Luis', 'ART3' },
-	{ 'America/Argentina/Tucuman', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
-	{ 'America/Argentina/Ushuaia', 'ART3ARST,M10.1.0/0,M3.3.0/0' },
+	{ 'America/Argentina/Tucuman', 'ART3ARST,M10.3.0/0,M3.3.0/0' },
+	{ 'America/Argentina/Ushuaia', 'ART3' },
 	{ 'America/Aruba', 'AST4' },
 	{ 'America/Asuncion', 'PYT4PYST,M10.3.0/0,M3.2.0/0' },
 	{ 'America/Atikokan', 'EST5' },
@@ -90,7 +91,7 @@ TZ = {
 	{ 'America/Bogota', 'COT5' },
 	{ 'America/Boise', 'MST7MDT,M3.2.0,M11.1.0' },
 	{ 'America/Cambridge Bay', 'MST7MDT,M3.2.0,M11.1.0' },
-	{ 'America/Campo Grande', 'AMT4AMST,M10.2.0/0,M2.3.0/0' },
+	{ 'America/Campo Grande', 'AMT4AMST,M10.3.0/0,M2.3.0/0' },
 	{ 'America/Cancun', 'CST6CDT,M4.1.0,M10.5.0' },
 	{ 'America/Caracas', 'VET4:30' },
 	{ 'America/Cayenne', 'GFT3' },
@@ -98,7 +99,7 @@ TZ = {
 	{ 'America/Chicago', 'CST6CDT,M3.2.0,M11.1.0' },
 	{ 'America/Chihuahua', 'MST7MDT,M4.1.0,M10.5.0' },
 	{ 'America/Costa Rica', 'CST6' },
-	{ 'America/Cuiaba', 'AMT4AMST,M10.2.0/0,M2.3.0/0' },
+	{ 'America/Cuiaba', 'AMT4AMST,M10.3.0/0,M2.3.0/0' },
 	{ 'America/Curacao', 'AST4' },
 	{ 'America/Danmarkshavn', 'GMT0' },
 	{ 'America/Dawson', 'PST8PDT,M3.2.0,M11.1.0' },
@@ -176,7 +177,7 @@ TZ = {
 	{ 'America/Rio Branco', 'AMT4' },
 	{ 'America/Santarem', 'BRT3' },
 	{ 'America/Santo Domingo', 'AST4' },
-	{ 'America/Sao Paulo', 'BRT3BRST,M10.2.0/0,M2.3.0/0' },
+	{ 'America/Sao Paulo', 'BRT3BRST,M10.3.0/0,M2.3.0/0' },
 	{ 'America/Scoresbysund', 'EGT1EGST,M3.5.0/0,M10.5.0/1' },
 	{ 'America/Shiprock', 'MST7MDT,M3.2.0,M11.1.0' },
 	{ 'America/St Barthelemy', 'AST4' },
@@ -224,12 +225,12 @@ TZ = {
 	{ 'Asia/Choibalsan', 'CHOT-8' },
 	{ 'Asia/Chongqing', 'CST-8' },
 	{ 'Asia/Colombo', 'IST-5:30' },
-	{ 'Asia/Damascus', 'EET-2EEST,M4.1.5/0,J274/0' },
+	{ 'Asia/Damascus', 'EET-2EEST,M4.1.5/0,J305/0' },
 	{ 'Asia/Dhaka', 'BDT-6' },
 	{ 'Asia/Dili', 'TLT-9' },
 	{ 'Asia/Dubai', 'GST-4' },
 	{ 'Asia/Dushanbe', 'TJT-5' },
-	{ 'Asia/Gaza', 'EET-2EEST,J91/0,M9.2.4' },
+	{ 'Asia/Gaza', 'EET-2EEST,J91/0,M8.5.4' },
 	{ 'Asia/Harbin', 'CST-8' },
 	{ 'Asia/Ho Chi Minh', 'ICT-7' },
 	{ 'Asia/Hong Kong', 'HKT-8' },
@@ -365,7 +366,7 @@ TZ = {
 	{ 'Indian/Kerguelen', 'TFT-5' },
 	{ 'Indian/Mahe', 'SCT-4' },
 	{ 'Indian/Maldives', 'MVT-5' },
-	{ 'Indian/Mauritius', 'MUT-4' },
+	{ 'Indian/Mauritius', 'MUT-4MUST,M10.5.0,M3.5.0/3' },
 	{ 'Indian/Mayotte', 'EAT-3' },
 	{ 'Indian/Reunion', 'RET-4' },
 	{ 'Pacific/Apia', 'WST11' },
@@ -406,3 +407,166 @@ TZ = {
 	{ 'Pacific/Wake', 'WAKT-12' },
 	{ 'Pacific/Wallis', 'WFT-12' },
 }
+
+OFFSET = {
+	gmt   =      0,	-- GMT
+	eat   =  10800,	-- EAT
+	cet   =   3600,	-- CET
+	wat   =   3600,	-- WAT
+	cat   =   7200,	-- CAT
+	wet   =      0,	-- WET
+	sast  =   7200,	-- SAST
+	eet   =   7200,	-- EET
+	hast  = -36000,	-- HAST
+	hadt  = -32400,	-- HADT
+	akst  = -32400,	-- AKST
+	akdt  = -28800,	-- AKDT
+	ast   = -14400,	-- AST
+	brt   = -10800,	-- BRT
+	art   = -10800,	-- ART
+	arst  =  -7200,	-- ARST
+	pyt   = -14400,	-- PYT
+	pyst  = -10800,	-- PYST
+	est   = -18000,	-- EST
+	cst   = -21600,	-- CST
+	amt   = -14400,	-- AMT
+	cot   = -18000,	-- COT
+	mst   = -25200,	-- MST
+	mdt   = -21600,	-- MDT
+	vet   = -16200,	-- VET
+	gft   = -10800,	-- GFT
+	pst   = -28800,	-- PST
+	pdt   = -25200,	-- PDT
+	ect   = -18000,	-- ECT
+	gyt   = -14400,	-- GYT
+	bot   = -14400,	-- BOT
+	pet   = -18000,	-- PET
+	pmst  = -10800,	-- PMST
+	pmdt  =  -7200,	-- PMDT
+	uyt   = -10800,	-- UYT
+	uyst  =  -7200,	-- UYST
+	fnt   =  -7200,	-- FNT
+	srt   = -10800,	-- SRT
+	egt   =  -3600,	-- EGT
+	egst  =      0,	-- EGST
+	nst   = -12600,	-- NST
+	ndt   =  -9000,	-- NDT
+	wst   =  28800,	-- WST
+	davt  =  25200,	-- DAVT
+	ddut  =  36000,	-- DDUT
+	mawt  =  21600,	-- MAWT
+	nzst  =  43200,	-- NZST
+	nzdt  =  46800,	-- NZDT
+	rott  = -10800,	-- ROTT
+	syot  =  10800,	-- SYOT
+	vost  =  21600,	-- VOST
+	almt  =  21600,	-- ALMT
+	anat  =  43200,	-- ANAT
+	anast =  46800,	-- ANAST
+	aqtt  =  18000,	-- AQTT
+	tmt   =  18000,	-- TMT
+	azt   =  14400,	-- AZT
+	azst  =  18000,	-- AZST
+	ict   =  25200,	-- ICT
+	kgt   =  21600,	-- KGT
+	bnt   =  28800,	-- BNT
+	chot  =  28800,	-- CHOT
+	ist   =  19800,	-- IST
+	bdt   =  21600,	-- BDT
+	tlt   =  32400,	-- TLT
+	gst   =  14400,	-- GST
+	tjt   =  18000,	-- TJT
+	hkt   =  28800,	-- HKT
+	hovt  =  25200,	-- HOVT
+	irkt  =  28800,	-- IRKT
+	irkst =  32400,	-- IRKST
+	wit   =  25200,	-- WIT
+	eit   =  32400,	-- EIT
+	aft   =  16200,	-- AFT
+	pett  =  43200,	-- PETT
+	petst =  46800,	-- PETST
+	pkt   =  18000,	-- PKT
+	npt   =  20700,	-- NPT
+	krat  =  25200,	-- KRAT
+	krast =  28800,	-- KRAST
+	myt   =  28800,	-- MYT
+	magt  =  39600,	-- MAGT
+	magst =  43200,	-- MAGST
+	cit   =  28800,	-- CIT
+	pht   =  28800,	-- PHT
+	novt  =  21600,	-- NOVT
+	novst =  25200,	-- NOVST
+	omst  =  21600,	-- OMST
+	omsst =  25200,	-- OMSST
+	orat  =  18000,	-- ORAT
+	kst   =  32400,	-- KST
+	qyzt  =  21600,	-- QYZT
+	mmt   =  23400,	-- MMT
+	sakt  =  36000,	-- SAKT
+	sakst =  39600,	-- SAKST
+	uzt   =  18000,	-- UZT
+	sgt   =  28800,	-- SGT
+	get   =  14400,	-- GET
+	btt   =  21600,	-- BTT
+	jst   =  32400,	-- JST
+	ulat  =  28800,	-- ULAT
+	vlat  =  36000,	-- VLAT
+	vlast =  39600,	-- VLAST
+	yakt  =  32400,	-- YAKT
+	yakst =  36000,	-- YAKST
+	yekt  =  18000,	-- YEKT
+	yekst =  21600,	-- YEKST
+	azot  =  -3600,	-- AZOT
+	azost =      0,	-- AZOST
+	cvt   =  -3600,	-- CVT
+	fkt   = -14400,	-- FKT
+	fkst  = -10800,	-- FKST
+	cwst  =  31500,	-- CWST
+	lhst  =  37800,	-- LHST
+	lhst  =  39600,	-- LHST
+	msk   =  10800,	-- MSK
+	msd   =  14400,	-- MSD
+	samt  =  14400,	-- SAMT
+	samst =  18000,	-- SAMST
+	volt  =  10800,	-- VOLT
+	volst =  14400,	-- VOLST
+	iot   =  21600,	-- IOT
+	cxt   =  25200,	-- CXT
+	cct   =  23400,	-- CCT
+	tft   =  18000,	-- TFT
+	sct   =  14400,	-- SCT
+	mvt   =  18000,	-- MVT
+	mut   =  14400,	-- MUT
+	must  =  18000,	-- MUST
+	ret   =  14400,	-- RET
+	chast =  45900,	-- CHAST
+	chadt =  49500,	-- CHADT
+	vut   =  39600,	-- VUT
+	phot  =  46800,	-- PHOT
+	tkt   = -36000,	-- TKT
+	fjt   =  43200,	-- FJT
+	tvt   =  43200,	-- TVT
+	galt  = -21600,	-- GALT
+	gamt  = -32400,	-- GAMT
+	sbt   =  39600,	-- SBT
+	hst   = -36000,	-- HST
+	lint  =  50400,	-- LINT
+	kost  =  39600,	-- KOST
+	mht   =  43200,	-- MHT
+	mart  = -34200,	-- MART
+	sst   = -39600,	-- SST
+	nrt   =  43200,	-- NRT
+	nut   = -39600,	-- NUT
+	nft   =  41400,	-- NFT
+	nct   =  39600,	-- NCT
+	pwt   =  32400,	-- PWT
+	pont  =  39600,	-- PONT
+	pgt   =  36000,	-- PGT
+	ckt   = -36000,	-- CKT
+	taht  = -36000,	-- TAHT
+	gilt  =  43200,	-- GILT
+	tot   =  46800,	-- TOT
+	trut  =  36000,	-- TRUT
+	wakt  =  43200,	-- WAKT
+	wft   =  43200,	-- WFT
+}