@ -27,17 +27,23 @@
#
namespace eval punk::timeinterval {
proc clock_scan_interval { seconds delta units } {
# clock_scan_interval formats $seconds to a string for processing by clock scan
# then returns new timestamp in seconds
set stamp [clock format $seconds -format "%Y%m%dT%H%M%S"]
if { $delta < 0 } {
append stamp " - " [expr { abs( $delta ) } ] " " $units
} else {
append stamp " + " $delta " " $units
}
return [clock scan $stamp]
}
#The free-form 'clock scan' is deprecated. It worked in 8.4 to 8.6/8.7 (and earlier?) - but doesn't work in tcl9
#proc clock_scan_interval { seconds delta units } {
# # clock_scan_interval formats $seconds to a string for processing by clock scan
# # then returns new timestamp in seconds
# set stamp [clock format $seconds -format "%Y%m%dT%H%M%S"]
# if { $delta < 0 } {
# append stamp " - " [expr { abs( $delta ) } ] " " $units
# } else {
# append stamp " + " $delta " " $units
# }
# return [clock scan $stamp]
#}
#proc clock_scan_interval { seconds delta units } {
# #8.6+
# clock add $seconds $delta $units
#}
namespace export difference
#wrap in dict
@ -46,21 +52,36 @@ namespace eval punk::timeinterval {
lassign [interval_ymdhs $s1 $s2] Y M D h m s
return [dict create years $Y months $M days $D hours $h minutes $m seconds $s]
}
proc interval_ymdhs { s1 s2 } {
# interval_ymdhs calculates the interval of time between
# the earliest date and the last date
# by starting to count at the earliest date.
lappend PUNKARGS [list {
@id -id "::punk::timeinterval::interval_ymdhs"
@cmd -name "punk::timeinterval::interval_ymdhs" -help\
"interval_ymdhs calculates the interval of time between
the earliest date and the last date
by starting to count at the earliest date."
@opts
-maxunit -default years -choices {years months days hours minutes seconds}
-timezone -default ""
@values -min 2 -max 2
s1
s2
}]
proc interval_ymdhs {args} {
set argd [punk::args::parse $args withid ::punk::timeinterval::interval_ymdhs]
lassign [dict values $argd] leaders opts values received
set maxunit [dict get $opts -maxunit]
set timezone [dict get $opts -timezone]
set s1 [dict get $values s1]
set s2 [dict get $values s2]
# This proc has audit features. It will automatically
# attempt to correct and report any discrepancies it finds.
# if s1 and s2 aren't in seconds, convert to seconds.
if { ![string is integer -strict $s1] } {
set s1 [clock scan $s1]
set s1 [clock scan $s1 -timezone $timezone ]
}
if { ![string is integer -strict $s2] } {
set s2 [clock scan $s2]
set s2 [clock scan $s2 -timezone $timezone ]
}
# postgreSQL intervals determine month length based on earliest date in interval calculations.
@ -77,64 +98,82 @@ namespace eval punk::timeinterval {
# Calculate years from s1_p0 to s2
set y_count 0
set s1_p0 $s1
set s2_y_check $s1_p0
while { $s2_y_check <= $s2 } {
set s1_p1 $s2_y_check
set y $y_count
incr y_count
set s2_y_check [clock_scan_interval $s1_p0 $y_count years]
}
# interval s1_p0 to s1_p1 counted in y years
if {$maxunit eq "years"} {
set s2_y_check $s1_p0
while { $s2_y_check <= $s2 } {
set s1_p1 $s2_y_check
set y $y_count
incr y_count
set s2_y_check [clock add $s1_p0 $y_count years -timezone $timezone]
}
# interval s1_p0 to s1_p1 counted in y years
# is the base offset incremented one too much?
set s2_y_check [clock_scan_interval $s1 $y years]
if { $s2_y_check > $s2 } {
set y [expr { $y - 1 } ]
set s2_y_check [clock_scan_interval $s1 $y years]
}
# increment s1 (s1_p0) forward y years to s1_p1
if { $y == 0 } {
set s1_p1 $s1
# is the base offset incremented one too much?
set s2_y_check [clock add $s1 $y years -timezone $timezone]
if { $s2_y_check > $s2 } {
set y [expr { $y - 1 } ]
set s2_y_check [clock add $s1 $y years -timezone $timezone]
}
# increment s1 (s1_p0) forward y years to s1_p1
if { $y == 0 } {
set s1_p1 $s1
} else {
set s1_p1 [clock add $s1 $y years -timezone $timezone]
}
} else {
set s1_p1 [clock_scan_interval $s1 $y years]
set y 0
set s1_p1 $s1
}
# interval s1 to s1_p1 counted in y years
# Calculate months from s1_p1 to s2
set m_count 0
set s2_m_check $s1_p1
while { $s2_m_check <= $s2 } {
set s1_p2 $s2_m_check
set m $m_count
incr m_count
set s2_m_check [clock_scan_interval $s1_p1 $m_count months]
set s1_p2 $s1_p1 ;#?
set m 0
if {$maxunit in {years months}} {
while { $s2_m_check <= $s2 } {
set s1_p2 $s2_m_check
set m $m_count
incr m_count
set s2_m_check [clock add $s1_p1 $m_count months -timezone $timezone]
}
}
# interval s1_p1 to s1_p2 counted in m months
# Calculate interval s1_p2 to s2 in days
# day_in_sec [expr { 60 * 60 * 24 } ]
# 86400
# Since length of month is not relative, use math.
# Clip any fractional part.
set d [expr { int( ( $s2 - $s1_p2 ) / 86400. ) } ]
# Ideally, this should always be true, but daylight savings..
# so, go backward one day and make hourly steps for last day.
if { $d > 0 } {
incr d -1
set d 0
set s1_p3 $s1_p2
if {$maxunit in {years months days}} {
# Calculate interval s1_p2 to s2 in days
# day_in_sec [expr { 60 * 60 * 24 } ]
# 86400
# Since length of month is not relative, use math.
# Clip any fractional part.
set d [expr { int( ( $s2 - $s1_p2 ) / 86400. ) } ]
# Ideally, this should always be true, but daylight savings..
# so, go backward one day and make hourly steps for last day.
if { $d > 0 } {
incr d -1
}
# Move interval from s1_p2 to s1_p3
set s1_p3 [clock add $s1_p2 $d days -timezone $timezone]
}
# Move interval from s1_p2 to s1_p3
set s1_p3 [clock_scan_interval $s1_p2 $d days]
# s1_p3 is less than a day from s2
# Calculate interval s1_p3 to s2 in hours
# hour_in_sec [expr { 60 * 60 } ]
# 3600
set h [expr { int( ( $s2 - $s1_p3 ) / 3600. ) } ]
# Move interval from s1_p3 to s1_p4
set s1_p4 [clock_scan_interval $s1_p3 $h hours]
# s1_p4 is less than an hour from s2
set h 0
set s1_p4 $s1_p3
if {$maxunit in {years months days hours}} {
# Calculate interval s1_p3 to s2 in hours
# hour_in_sec [expr { 60 * 60 } ]
# 3600
set h [expr { int( ( $s2 - $s1_p3 ) / 3600. ) } ]
# Move interval from s1_p3 to s1_p4
set s1_p4 [clock add $s1_p3 $h hours -timezone $timezone]
# s1_p4 is less than an hour from s2
}
# Sometimes h = 24, yet is already included as a day!
@ -148,7 +187,7 @@ namespace eval punk::timeinterval {
# 43 years 9 mons 27 days
# (1 row)
# According to LibreCalc, the difference is 16007 days
#puts "s2=s1+16007days? [clock format [clock_scan_interval $s1 16007 days] -format %Y%m%dT%H%M%S]"
#puts "s2=s1+16007days? [clock format [clock add $s1 16007 days] -format %Y%m%dT%H%M%S]"
# ^ this calc is consistent with 16007 days
# So, let's ignore the Postgresql irregularity for now.
# Here's more background:
@ -156,68 +195,84 @@ namespace eval punk::timeinterval {
# http://www.postgresql.org/message-id/200707060844.l668i89w097496@wwwmaster.postgresql.org
# So, Postgres had a bug..
# Sanity check: if over 24 or 48 hours, push it up to a day unit
set h_in_days [expr { int( $h / 24. ) } ]
if { $h >= 1 } {
# adjust hours to less than a day
set h [expr { $h - ( 24 * $h_in_days ) } ]
incr d $h_in_days
set h_correction_p 1
} else {
set h_correction_p 0
if {$maxunit in {years months days}} {
# Sanity check: if over 24 or 48 hours, push it up to a day unit
set h_in_days [expr { int( $h / 24. ) } ]
if { $h >= 1 } {
# adjust hours to less than a day
set h [expr { $h - ( 24 * $h_in_days ) } ]
incr d $h_in_days
set h_correction_p 1
} else {
set h_correction_p 0
}
}
# Calculate interval s1_p4 to s2 in minutes
# minute_in_sec [expr { 60 } ]
# 60
set mm [expr { int( ( $s2 - $s1_p4 ) / 60. ) } ]
# Move interval from s1_p4 to s1_p5
set s1_p5 [clock_scan_interval $s1_p4 $mm minutes]
# Sanity check: if 60 minutes, push it up to an hour unit
if { $mm >= 60 } {
# adjust 60 minutes to 1 hour
# puts "interval_ymdhs: debug info mm - 60, h + 1"
set mm [expr { $mm - 60 } ]
incr h
set mm_correction_p 1
} else {
set mm_correction_p 0
set mm 0
set s1_p5 $s1_p4
if {$maxunit in {years months days hours minutes}} {
# Calculate interval s1_p4 to s2 in minutes
# minute_in_sec [expr { 60 } ]
# 60
set mm [expr { int( ( $s2 - $s1_p4 ) / 60. ) } ]
# Move interval from s1_p4 to s1_p5
set s1_p5 [clock add $s1_p4 $mm minutes -timezone $timezone]
}
if {$maxunit in {years months days hours}} {
# Sanity check: if 60 minutes, push it up to an hour unit
if { $mm >= 60 } {
# adjust 60 minutes to 1 hour
# puts "interval_ymdhs: debug info mm - 60, h + 1"
set mm [expr { $mm - 60 } ]
incr h
set mm_correction_p 1
} else {
set mm_correction_p 0
}
}
# Calculate interval s1_p5 to s2 in seconds
set s [expr { int( $s2 - $s1_p5 ) } ]
# Sanity check: if 60 seconds, push it up to one minute unit
if { $s >= 60 } {
# adjust 60 minutes to 1 hour
set s [expr { $s - 60 } ]
incr mm
set s_correction_p 1
} else {
set s_correction_p 0
if {$maxunit in {years months days hours minutes}} {
# Sanity check: if 60 seconds, push it up to one minute unit
if { $s >= 60 } {
# adjust 60 minutes to 1 hour
set s [expr { $s - 60 } ]
incr mm
set s_correction_p 1
} else {
set s_correction_p 0
}
}
set return_list [list $y $m $d $h $mm $s]
# test results by adding difference to s1 to get s2:
set i 0
set s1_test [clock format $s1 -format "%Y%m%dT%H%M%S"]
# set s1_test [clock format $s1 -format "%Y%m%dT%H%M%S"]
set signs_inconsistent_p 0
set diffterms [list]
foreach unit {years months days hours minutes seconds} {
set t_term [lindex $return_list $i]
if { $t_term != 0 } {
if { $t_term > 0 } {
append s1_test " + $t_term $unit"
#append s1_test " +$t_term $unit"
lappend diffterms +$t_term $unit
} else {
append s1_test " - [expr { abs( $t_term ) } ] $unit"
#append s1_test " -[expr { abs( $t_term ) } ] $unit"
lappend diffterms -[expr { abs( $t_term ) }] $unit
set signs_inconsistent_p 1
}
}
incr i
}
set s2_test [clock scan $s1_test]
#set s2_test [clock scan $s1_test]
set s2_test [clock add $s1 {*}$diffterms -timezone $timezone]
# puts "test s2 '$s2_test' from: '$s1_test'"
set counter 0
while { $s2 ne $s2_test && $counter < 30 } {
@ -263,19 +318,23 @@ namespace eval punk::timeinterval {
# test results by adding difference to s1 to get s2:
set i 0
set s1_test [clock format $s1 -format "%Y%m%dT%H%M%S"]
#set s1_test [clock format $s1 -format "%Y%m%dT%H%M%S"]
set diffterms [list]
foreach unit {years months days hours minutes seconds} {
set t_term [lindex $return_list $i]
if { $t_term != 0 } {
if { $t_term > 0 } {
append s1_test " + $t_term $unit"
#append s1_test " +$t_term $unit"
lappend diffterms +$t_term $unit
} else {
append s1_test " - [expr { abs( $t_term ) } ] $unit"
#append s1_test " -[expr { abs( $t_term ) } ] $unit"
lappend diffterms -[expr { abs( $t_term ) }] $unit
}
}
incr i
}
set s2_test [clock scan $s1_test]
#set s2_test [clock scan $s1_test]
set s2_test [clock add $s1 {*}$diffterms -timezone $timezone]
incr counter
}
if { ( $counter > 0 || $signs_inconsistent_p ) && ( $h_correction_p || $mm_correction_p || $s_correction_p ) } {
@ -342,7 +401,7 @@ namespace eval punk::timeinterval {
set s1_p1 $s2_y_check
set y $y_count
incr y_count -1
set s2_y_check [clock_scan_interval $s1_p0 $y_count years]
set s2_y_check [clock add $s1_p0 $y_count years]
}
# interval s1_p0 to s1_p1 counted in y years
@ -354,7 +413,7 @@ namespace eval punk::timeinterval {
set s1_p2 $s2_m_check
set m $m_count
incr m_count -1
set s2_m_check [clock_scan_interval $s1_p1 $m_count months]
set s2_m_check [clock add $s1_p1 $m_count months]
}
# interval s1_p1 to s1_p2 counted in m months
@ -371,7 +430,7 @@ namespace eval punk::timeinterval {
}
# Move interval from s1_p2 to s1_p3
set s1_p3 [clock_scan_interval $s1_p2 $d days]
set s1_p3 [clock add $s1_p2 $d days]
# s1_p3 is less than a day from s2
@ -380,7 +439,7 @@ namespace eval punk::timeinterval {
# 3600
set h [expr { int( ceil( ( $s2 - $s1_p3 ) / 3600. ) ) } ]
# Move interval from s1_p3 to s1_p4
set s1_p4 [clock_scan_interval $s1_p3 $h hours]
set s1_p4 [clock add $s1_p3 $h hours]
# s1_p4 is less than an hour from s2
# Sanity check: if over 24 or 48 hours, push it up to a day unit
@ -399,7 +458,7 @@ namespace eval punk::timeinterval {
# 60
set mm [expr { int( ceil( ( $s2 - $s1_p4 ) / 60. ) ) } ]
# Move interval from s1_p4 to s1_p5
set s1_p5 [clock_scan_interval $s1_p4 $mm minutes]
set s1_p5 [clock add $s1_p4 $mm minutes]
# Sanity check: if 60 minutes, push it up to an hour unit
if { $mm <= -60 } {
@ -430,21 +489,25 @@ namespace eval punk::timeinterval {
# test results by adding difference to s1 to get s2:
set i 0
set s1_test [clock format $s1 -format "%Y%m%dT%H%M%S"]
# set s1_test [clock format $s1 -format "%Y%m%dT%H%M%S"]
set signs_inconsistent_p 0
set diffterms [list]
foreach unit {years months days hours minutes seconds} {
set t_term [lindex $return_list $i]
if { $t_term != 0 } {
if { $t_term > 0 } {
append s1_test " + $t_term $unit"
#append s1_test " + $t_term $unit"
lappend diffterms +$t_term $unit
set signs_inconsistent_p 1
} else {
append s1_test " - [expr { abs( $t_term ) } ] $unit"
#append s1_test " - [expr { abs( $t_term ) } ] $unit"
lappend diffterms -[expr { abs( $t_term ) } ] $unit
}
}
incr i
}
set s2_test [clock scan $s1_test]
#set s2_test [clock scan $s1_test]
set s2_test [clock add $s1 {*}$diffterms]
set counter 0
while { $s2 ne $s2_test && $counter < 3 } {
@ -490,19 +553,23 @@ namespace eval punk::timeinterval {
# test results by adding difference to s1 to get s2:
set i 0
set s1_test [clock format $s1 -format "%Y%m%dT%H%M%S"]
#set s1_test [clock format $s1 -format "%Y%m%dT%H%M%S"]
set diffterms [list]
foreach unit {years months days hours minutes seconds} {
set t_term [lindex $return_list $i]
if { $t_term != 0 } {
if { $t_term > 0 } {
append s1_test " + $t_term $unit"
#append s1_test " + $t_term $unit"
lappend diffterms +$t_term $unit
} else {
append s1_test " - [expr { abs( $t_term ) } ] $unit"
#append s1_test " - [expr { abs( $t_term ) } ] $unit"
lappend diffterms -[expr { abs( $t_term ) } ] $unit
}
}
incr i
}
set s2_test [clock scan $s1_test]
#set s2_test [clock scan $s1_test]
set s2_test [clock add $s1 {*}$diffterms]
incr counter
}
if { ( $counter > 0 || $signs_inconsistent_p ) && ( $h_correction_p || $mm_correction_p || $s_correction_p ) } {
@ -526,7 +593,7 @@ namespace eval punk::timeinterval {
proc interval_remains_ymdhs_w_units { t1 t2 } {
# interval_remains_ymdhs_w_units
# returns interval_remains_ymdhs values with units
set v_list [interval_ymdhs $t2 $t1]
set v_list [interval_remains_ ymdhs $t2 $t1]
set i 0
set a ""
foreach f {years months days hours minutes seconds} {
@ -543,7 +610,105 @@ namespace eval punk::timeinterval {
# == === === === === === === === === === === === === === ===
# Sample 'about' function with punk::args documentation
# == === === === === === === === === === === === === === ===
tcl::namespace::eval punk::timeinterval {
tcl::namespace::export {[a-zA-Z]*} ;# Convention: export all lowercase
variable PUNKARGS
variable PUNKARGS_aliases
lappend PUNKARGS [list {
@id -id "(package)punk::timeinterval"
@package -name "punk::timeinterval" -help\
"time interval from wiki"
}]
namespace eval argdoc {
#namespace for custom argument documentation
proc package_name {} {
return punk::timeinterval
}
proc about_topics {} {
#info commands results are returned in an arbitrary order (like array keys)
set topic_funs [info commands [namespace current]::get_topic_*]
set about_topics [list]
foreach f $topic_funs {
set tail [namespace tail $f]
lappend about_topics [string range $tail [string length get_topic_] end]
}
#Adjust this function or 'default_topics' if a different order is required
return [lsort $about_topics]
}
proc default_topics {} {return [list Description *]}
# -------------------------------------------------------------
# get_topic_ functions add more to auto-include in about topics
# -------------------------------------------------------------
proc get_topic_Description {} {
punk::args::lib::tstr [string trim {
package punk::timeinterval
basic time interval calculations
} \n]
}
proc get_topic_License {} {
return "X11"
}
proc get_topic_Version {} {
return "$::punk::timeinterval::version"
}
proc get_topic_Contributors {} {
set authors {{various "https://wiki.tcl-lang.org/page/Measuring+time+intervals+%28between+two+timestamps%29+with+months+etc"} {Julian Noble <julian@precisium.com.au>}}
set contributors ""
foreach a $authors {
append contributors $a \n
}
if {[string index $contributors end] eq "\n"} {
set contributors [string range $contributors 0 end-1]
}
return $contributors
}
proc get_topic_notes {} {
punk::args::lib::tstr -return string {
X11 license - is MIT with additional clause regarding use of contributor names.
}
}
# -------------------------------------------------------------
}
# we re-use the argument definition from punk::args::standard_about and override some items
set overrides [dict create]
dict set overrides @id -id "::punk::timeinterval::about"
dict set overrides @cmd -name "punk::timeinterval::about"
dict set overrides @cmd -help [string trim [punk::args::lib::tstr {
About punk::timeinterval
}] \n]
dict set overrides topic -choices [list {*}[punk::timeinterval::argdoc::about_topics] *]
dict set overrides topic -choicerestricted 1
dict set overrides topic -default [punk::timeinterval::argdoc::default_topics] ;#if -default is present 'topic' will always appear in parsed 'values' dict
set newdef [punk::args::resolved_def -antiglobs -package_about_namespace -override $overrides ::punk::args::package::standard_about *]
lappend PUNKARGS [list $newdef]
proc about {args} {
package require punk::args
#standard_about accepts additional choices for topic - but we need to normalize any abbreviations to full topic name before passing on
set argd [punk::args::parse $args withid ::punk::timeinterval::about]
lassign [dict values $argd] _leaders opts values _received
punk::args::package::standard_about -package_about_namespace ::punk::timeinterval::argdoc {*}$opts {*}[dict get $values topic]
}
}
# end of sample 'about' function
# == === === === === === === === === === === === === === ===
# -----------------------------------------------------------------------------
# register namespace(s) to have PUNKARGS,PUNKARGS_aliases variables checked
# -----------------------------------------------------------------------------
# variable PUNKARGS
# variable PUNKARGS_aliases
namespace eval ::punk::args::register {
#use fully qualified so 8.6 doesn't find existing var in global namespace
lappend ::punk::args::register::NAMESPACES ::punk::timeinterval
}
Julian Noble