2c3632d14f
Lots of code refactoring, simplification and cleanup. Lots of new unit-tests providing much higher code coverage. All courtesy of rillig at netbsd. Other significant changes: o new read-only variable .SHELL which provides the path of the shell used to run scripts (as defined by the .SHELL target). o variable parsing detects more errors. o new debug option -dl: LINT mode, does the equivalent of := for all variable assignments so that file and line number are reported for variable parse errors.
119 lines
4.2 KiB
Makefile
119 lines
4.2 KiB
Makefile
# $NetBSD: varmod-to-separator.mk,v 1.3 2020/08/31 19:58:21 rillig Exp $
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#
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# Tests for the :ts variable modifier, which joins the words of the variable
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# using an arbitrary character as word separator.
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WORDS= one two three four five six
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# The words are separated by a single space, just as usual.
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.if ${WORDS:ts } != "one two three four five six"
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. warning Space as separator does not work.
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.endif
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# The separator can be an arbitrary character, for example a comma.
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.if ${WORDS:ts,} != "one,two,three,four,five,six"
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. warning Comma as separator does not work.
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.endif
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# After the :ts modifier, other modifiers can follow.
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.if ${WORDS:ts/:tu} != "ONE/TWO/THREE/FOUR/FIVE/SIX"
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. warning Chaining modifiers does not work.
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.endif
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# To use the ':' as the separator, just write it normally.
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# The first colon is the separator, the second ends the modifier.
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.if ${WORDS:ts::tu} != "ONE:TWO:THREE:FOUR:FIVE:SIX"
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. warning Colon as separator does not work.
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.endif
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# When there is just a colon but no other character, the words are
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# "separated" by an empty string, that is, they are all squashed
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# together.
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.if ${WORDS:ts:tu} != "ONETWOTHREEFOURFIVESIX"
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. warning Colon as separator does not work.
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.endif
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# Applying the :tu modifier first and then the :ts modifier does not change
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# anything since neither of these modifiers is related to how the string is
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# split into words. Beware of separating the words using a single or double
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# quote though, or other special characters like dollar or backslash.
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#
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# This example also demonstrates that the closing brace is not interpreted
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# as a separator, but as the closing delimiter of the whole variable
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# expression.
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.if ${WORDS:tu:ts} != "ONETWOTHREEFOURFIVESIX"
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. warning Colon as separator does not work.
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.endif
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# The '}' plays the same role as the ':' in the preceding examples.
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# Since there is a single character before it, that character is taken as
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# the separator.
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.if ${WORDS:tu:ts/} != "ONE/TWO/THREE/FOUR/FIVE/SIX"
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. warning Colon as separator does not work.
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.endif
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# Now it gets interesting and ambiguous: The separator could either be empty
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# since it is followed by a colon. Or it could be the colon since that
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# colon is followed by the closing brace. It's the latter case.
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.if ${WORDS:ts:} != "one:two:three:four:five:six"
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. warning Colon followed by closing brace does not work.
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.endif
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# As in the ${WORDS:tu:ts} example above, the separator is empty.
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.if ${WORDS:ts} != "onetwothreefourfivesix"
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. warning Empty separator before closing brace does not work.
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.endif
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# The :ts modifier can be followed by other modifiers.
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.if ${WORDS:ts:S/two/2/} != "one2threefourfivesix"
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. warning Separator followed by :S modifier does not work.
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.endif
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# The :ts modifier can follow other modifiers.
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.if ${WORDS:S/two/2/:ts} != "one2threefourfivesix"
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. warning :S modifier followed by :ts modifier does not work.
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.endif
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# The :ts modifier with an actual separator can be followed by other
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# modifiers.
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.if ${WORDS:ts/:S/two/2/} != "one/2/three/four/five/six"
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. warning The :ts modifier followed by an :S modifier does not work.
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.endif
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# The separator can be \n, which is a newline.
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.if ${WORDS:[1..3]:ts\n} != "one${.newline}two${.newline}three"
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. warning The separator \n does not produce a newline.
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.endif
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# The separator can be \t, which is a tab.
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.if ${WORDS:[1..3]:ts\t} != "one two three"
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. warning The separator \t does not produce a tab.
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.endif
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# The separator can be given as octal number.
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.if ${WORDS:[1..3]:ts\012:tu} != "ONE${.newline}TWO${.newline}THREE"
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. warning The separator \012 is not interpreted in octal ASCII.
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.endif
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# The separator can be given as hexadecimal number.
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.if ${WORDS:[1..3]:ts\xa:tu} != "ONE${.newline}TWO${.newline}THREE"
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. warning The separator \xa is not interpreted in hexadecimal ASCII.
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.endif
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# In the :t modifier, the :t must be followed by any of A, l, s, u.
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.if ${WORDS:tx} != "anything"
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. info This line is not reached because of the malformed condition.
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. info If this line were reached, it would be visible in the -dcpv log.
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.endif
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.info Parsing continues here.
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# After the backslash, only n, t, an octal number, or x and a hexadecimal
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# number are allowed.
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.if ${WORDS:t\X} != "anything"
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. info This line is not reached.
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.endif
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.info Parsing continues here.
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all:
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@:;
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