1# $NetBSD: varmod-localtime.mk,v 1.5 2020/10/31 20:30:06 rillig Exp $ 2# 3# Tests for the :localtime variable modifier, which formats a timestamp 4# using strftime(3) in local time. 5 6.if ${TZ} != "Europe/Berlin" # see unit-tests/Makefile 7. error 8.endif 9 10all: mod-localtime 11all: mod-localtime-indirect 12all: parse-errors 13 14# Test for the default time format, %c. Since the time always varies, it's 15# only possible to check for the general format here. The names of the 16# month and weekday are always in English, independent from the locale. 17# Example: Thu Oct 29 18:56:41 2020 18.if ${:U:localtime:tW:M??? ??? ?? ??\:??\:?? ????} == "" 19. error 20.endif 21 22mod-localtime: 23 @echo $@ 24 25 # modifier name too short 26 @echo ${%Y:L:localtim=1593536400} 27 28 # 2020-07-01T00:00:00Z 29 @echo ${%Y:L:localtime=1593536400} 30 31 # modifier name too long 32 @echo ${%Y:L:localtimer=1593536400} 33 34 # If the modifier name is not matched exactly, fall back to the 35 # :from=to modifier. 36 @echo ${localtime:L:local%=gm%} == gmtime 37 38mod-localtime-indirect: 39 @echo $@: 40 41 # As of 2020-08-16, it is not possible to pass the seconds via a 42 # variable expression. This is because parsing of the :localtime 43 # modifier stops at the '$' and returns to ApplyModifiers. 44 # 45 # There, a colon would be skipped but not a dollar. 46 # Parsing therefore continues at the '$' of the ${:U159...}, looking 47 # for an ordinary variable modifier. 48 # 49 # At this point, the ${:U} is expanded and interpreted as a variable 50 # modifier, which results in the error message "Unknown modifier '1'". 51 # 52 # If ApplyModifier_Localtime were to pass its argument through 53 # ParseModifierPart, this would work. 54 @echo ${%Y:L:localtime=${:U1593536400}} 55 56parse-errors: 57 @echo $@: 58 59 # As of 2020-10-31, it is possible to pass negative time stamps 60 # to the :localtime modifier, resulting in dates before 1970. 61 # Going back 50 years in the past is not a practical use case for 62 # make. 63 : -1 becomes ${:L:localtime=-1}. 64 65 # Spaces are allowed, not because it would make sense but just as 66 # a side-effect from using strtoul. 67 : space 1 becomes ${:L:localtime= 1}. 68 69 # 0 means now; to get consistent test results, the actual value has 70 # to be normalized. 71 : 0 becomes ${:L:localtime=0:C,^... ... .. ..:..:.. 20..$,ok,W}. 72 73 : 1 becomes ${:L:localtime=1}. 74 75 : INT32_MAX becomes ${:L:localtime=2147483647}. 76 77 # This may be different if time_t is still a 32-bit signed integer. 78 : INT32_MAX + 1 becomes ${:L:localtime=2147483648}. 79 80 # Integer overflow. 81 # Because this modifier is implemented using strtoul, the parsed 82 # time is ULONG_MAX, which gets converted to -1. This results 83 # in a time stamp of the second before 1970 (in UTC) or 3599 seconds 84 # after New Year's Day in Europe/Berlin. 85 : overflow becomes ${:L:localtime=10000000000000000000000000000000}. 86 87 # As of 2020-10-31, there is no error handling while parsing the 88 # :localtime modifier, thus no error message is printed. Parsing 89 # stops after the '=', and the remaining string is parsed for 90 # more variable modifiers. Because of the unknown modifier 'e', 91 # the whole variable value is discarded and thus not printed. 92 : letter becomes ${:L:localtime=error}. 93