tests/array.tests - external_bash - Gitiles

 # this is needed so that the bad assignments (b[]=bcde, for example) do not
 # cause fatal shell errors when in posix mode
 set +o posix

 set +a
 # The calls to egrep -v are to filter out builtin array variables that are
 # automatically set and possibly contain values that vary.

 # first make sure we handle the basics
 x=()
 echo ${x[@]}
 unset x

 # this should be an error
 test=(first & second)
 echo $?
 unset test

 # make sure declare -a converts an existing variable to an array
 unset a
 a=abcde
 declare -a a
 echo ${a[0]}

 unset a
 a=abcde
 a[2]=bdef

 unset b
 declare -a b[256]

 unset c[2]
 unset c[*]

 a[1]=

 _ENV=/bin/true
 x=${_ENV[(_$-=0)+(_=1)-_${-%%*i*}]}

 declare -r c[100]

 echo ${a[0]} ${a[4]}
 echo ${a[@]}

 echo ${a[*]}

 # this should print out values, too
 declare -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'

 unset a[7]
 echo ${a[*]}

 unset a[4]
 echo ${a[*]}

 echo ${a}
 echo "${a}"
 echo $a

 unset a[0]
 echo ${a}

 echo ${a[@]}

 a[5]="hello world"
 echo ${a[5]}
 echo ${#a[5]}

 echo ${#a[@]}

 a[4+5/2]="test expression"
 echo ${a[@]}

 readonly a[5]
 readonly a
 # these two lines should output `declare' commands
 readonly -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
 declare -ar | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
 # this line should output `readonly' commands, even for arrays
 set -o posix
 readonly -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
 set +o posix

 declare -a d='([1]="" [2]="bdef" [5]="hello world" "test")'
 d[9]="ninth element"

 declare -a e[10]=test	# this works in post-bash-2.05 versions
 declare -a e[10]='(test)'

 pass=/etc/passwd
 declare -a f='("${d[@]}")'
 b=([0]=this [1]=is [2]=a [3]=test [4]="$PS1" [5]=$pass)

 echo ${b[@]:2:3}

 declare -pa | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'

 a[3]="this is a test"

 b[]=bcde
 b[*]=aaa
 echo ${b[   ]}

 c[-2]=4
 echo ${c[-4]}

 d[7]=(abdedfegeee)

 d=([]=abcde [1]="test test" [*]=last [-65]=negative )

 unset d[12]
 unset e[*]

 declare -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'

 ps1='hello'
 unset ps1[2]
 unset ${ps1[2]}

 declare +a ps1
 declare +a c

 # the prompt should not print when using a here doc
 read -p "array test: " -a rv <<!
 this is a test of read using arrays
 !

 echo ${rv[0]} ${rv[4]}
 echo ${rv[@]}

 # the variable should be converted to an array when `read -a' is done
 vv=1
 read -a vv <<!
 this is a test of arrays
 !
 echo ${vv[0]} ${vv[3]}
 echo ${vv[@]}
 unset vv

 declare -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'

 export rv
 #set

 x[4]=bbb
 x=abde
 echo $x
 echo ${x[0]}
 echo ${x[4]}
 echo efgh | ( read x[1] ; echo ${x[1]} )
 echo wxyz | ( declare -a x ; read x ; echo $x ; echo ${x[0]} )

 # Make sure that arrays can be used to save the positional paramters verbatim
 set -- a 'b c' d 'e f g' h

 ARGV=( [0]=$0 "$@" )

 for z in "${ARGV[@]}"
 do
 	echo "$z"
 done

 echo "$0"
 for z in "$@"
 do
 	echo "$z"
 done

 # do various pattern removal and length tests
 XPATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:.:/sbin:/usr/sbin

 xpath=( $( IFS=: ; echo $XPATH ) )

 echo ${xpath[@]}
 echo ${xpath[@]##*/}
 echo ${xpath[0]##*/}
 echo ${xpath[@]%%[!/]*}
 echo ${xpath[0]%%[!/]*}
 recho ${xpath##*/}
 recho ${xpath%%[!/]*}
 recho ${xpath[5]##*/}
 recho ${xpath[5]%%[!/]*}

 # let's try to make it a DOS-style path

 zecho "${xpath[@]/\//\\}"
 zecho "${xpath[@]//\//\\}"
 zecho "${xpath[@]//[\/]/\\}"

 # length of the first element of the array, since array without subscript
 # is equivalent to referencing first element
 echo ${#xpath} -- ${#xpath[0]}

 # number of elements in the array
 nelem=${#xpath[@]}
 echo ${#xpath[@]} -- $nelem

 # total length of all elements in the array, including space separators
 xx="${xpath[*]}"
 echo ${#xx}

 # total length of all elements in the array
 xx=$( IFS='' ; echo "${xpath[*]}" )
 echo ${#xx}

 unset xpath[nelem-1]

 nelem=${#xpath[@]}
 echo ${#xpath[@]} -- $nelem

 # arrays and things that look like index assignments
 array=(42 [1]=14 [2]=44)

 array2=(grep [ 123 ] \*)

 echo ${array[@]}
 echo "${array2[@]}"

 # arrays and implicit arithmetic evaluation
 declare -i -a iarray

 iarray=( 2+4 1+6 7+2 )
 echo ${iarray[@]}

 iarray[4]=4+1
 echo ${iarray[@]}

 # make sure assignment using the compound assignment syntax removes all
 # of the old elements from the array value
 barray=(old1 old2 old3 old4 old5)
 barray=(new1 new2 new3)
 echo "length = ${#barray[@]}"
 echo "value = ${barray[*]}"

 # make sure the array code behaves correctly with respect to unset variables
 set -u
 ( echo ${#narray[4]} )

 # some old bugs and ksh93 compatibility tests
 set +u
 cd /tmp

 touch 1=bar
 foo=([10]="bar")
 echo ${foo[0]}
 rm 1=bar

 foo=(a b c d e f g)
 echo ${foo[@]}

 # quoted reserved words are ok
 foo=(\for \case \if \then \else)
 echo ${foo[@]}

 # quoted metacharacters are ok
 foo=( [1]='<>' [2]='<' [3]='>' [4]='!' )
 echo ${foo[@]}

 # numbers are just words when not in a redirection context
 foo=( 12 14 16 18 20 )
 echo ${foo[@]}

 foo=( 4414758999202 )
 echo ${foo[@]}

 # this was a bug in all versions of bash 2.x up to and including bash-2.04
 declare -a ddd=(aaa
 bbb)
 echo ${ddd[@]}

 # errors until post-bash-2.05a; now reserved words are OK
 foo=(a b c for case if then else)

 foo=(for case if then else)

 # errors
 metas=( <> < > ! )
 metas=( [1]=<> [2]=< [3]=> [4]=! )

 # various expansions that didn't really work right until post-bash-2.04
 foo='abc'
 echo ${foo[0]} ${#foo[0]}
 echo ${foo[1]} ${#foo[1]}
 echo ${foo[@]} ${#foo[@]}
 echo ${foo[*]} ${#foo[*]}

 foo=''
 echo ${foo[0]} ${#foo[0]}
 echo ${foo[1]} ${#foo[1]}
 echo ${foo[@]} ${#foo[@]}
 echo ${foo[*]} ${#foo[*]}
	# this is needed so that the bad assignments (b[]=bcde, for example) do not
	# cause fatal shell errors when in posix mode
	set +o posix

	set +a
	# The calls to egrep -v are to filter out builtin array variables that are
	# automatically set and possibly contain values that vary.

	# first make sure we handle the basics
	x=()
	echo ${x[@]}
	unset x

	# this should be an error
	test=(first & second)
	echo $?
	unset test

	# make sure declare -a converts an existing variable to an array
	unset a
	a=abcde
	declare -a a
	echo ${a[0]}

	unset a
	a=abcde
	a[2]=bdef

	unset b
	declare -a b[256]

	unset c[2]
	unset c[*]

	a[1]=

	_ENV=/bin/true
	x=${_ENV[(_$-=0)+(_=1)-_${-%%i}]}

	declare -r c[100]

	echo ${a[0]} ${a[4]}
	echo ${a[@]}

	echo ${a[*]}

	# this should print out values, too
	declare -a \| egrep -v '(BASH_VERSINFO\|PIPESTATUS\|GROUPS)'

	unset a[7]
	echo ${a[*]}

	unset a[4]
	echo ${a[*]}

	echo ${a}
	echo "${a}"
	echo $a

	unset a[0]
	echo ${a}

	echo ${a[@]}

	a[5]="hello world"
	echo ${a[5]}
	echo ${#a[5]}

	echo ${#a[@]}

	a[4+5/2]="test expression"
	echo ${a[@]}

	readonly a[5]
	readonly a
	# these two lines should output `declare' commands
	readonly -a \| egrep -v '(BASH_VERSINFO\|PIPESTATUS\|GROUPS)'
	declare -ar \| egrep -v '(BASH_VERSINFO\|PIPESTATUS\|GROUPS)'
	# this line should output `readonly' commands, even for arrays
	set -o posix
	readonly -a \| egrep -v '(BASH_VERSINFO\|PIPESTATUS\|GROUPS)'
	set +o posix

	declare -a d='([1]="" [2]="bdef" [5]="hello world" "test")'
	d[9]="ninth element"

	declare -a e[10]=test # this works in post-bash-2.05 versions
	declare -a e[10]='(test)'

	pass=/etc/passwd
	declare -a f='("${d[@]}")'
	b=([0]=this [1]=is [2]=a [3]=test [4]="$PS1" [5]=$pass)

	echo ${b[@]:2:3}

	declare -pa \| egrep -v '(BASH_VERSINFO\|PIPESTATUS\|GROUPS)'

	a[3]="this is a test"

	b[]=bcde
	b[*]=aaa
	echo ${b[ ]}

	c[-2]=4
	echo ${c[-4]}

	d[7]=(abdedfegeee)

	d=([]=abcde [1]="test test" [*]=last [-65]=negative )

	unset d[12]
	unset e[*]

	declare -a \| egrep -v '(BASH_VERSINFO\|PIPESTATUS\|GROUPS)'

	ps1='hello'
	unset ps1[2]
	unset ${ps1[2]}

	declare +a ps1
	declare +a c

	# the prompt should not print when using a here doc
	read -p "array test: " -a rv <<!
	this is a test of read using arrays
	!

	echo ${rv[0]} ${rv[4]}
	echo ${rv[@]}

	# the variable should be converted to an array when `read -a' is done
	vv=1
	read -a vv <<!
	this is a test of arrays
	!
	echo ${vv[0]} ${vv[3]}
	echo ${vv[@]}
	unset vv

	declare -a \| egrep -v '(BASH_VERSINFO\|PIPESTATUS\|GROUPS)'

	export rv
	#set

	x[4]=bbb
	x=abde
	echo $x
	echo ${x[0]}
	echo ${x[4]}
	echo efgh \| ( read x[1] ; echo ${x[1]} )
	echo wxyz \| ( declare -a x ; read x ; echo $x ; echo ${x[0]} )

	# Make sure that arrays can be used to save the positional paramters verbatim
	set -- a 'b c' d 'e f g' h

	ARGV=( [0]=$0 "$@" )

	for z in "${ARGV[@]}"
	do
	echo "$z"
	done

	echo "$0"
	for z in "$@"
	do
	echo "$z"
	done

	# do various pattern removal and length tests
	XPATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:.:/sbin:/usr/sbin

	xpath=( $( IFS=: ; echo $XPATH ) )

	echo ${xpath[@]}
	echo ${xpath[@]##*/}
	echo ${xpath[0]##*/}
	echo ${xpath[@]%%[!/]*}
	echo ${xpath[0]%%[!/]*}
	recho ${xpath##*/}
	recho ${xpath%%[!/]*}
	recho ${xpath[5]##*/}
	recho ${xpath[5]%%[!/]*}

	# let's try to make it a DOS-style path

	zecho "${xpath[@]/\//\\}"
	zecho "${xpath[@]//\//\\}"
	zecho "${xpath[@]//[\/]/\\}"

	# length of the first element of the array, since array without subscript
	# is equivalent to referencing first element
	echo ${#xpath} -- ${#xpath[0]}

	# number of elements in the array
	nelem=${#xpath[@]}
	echo ${#xpath[@]} -- $nelem

	# total length of all elements in the array, including space separators
	xx="${xpath[*]}"
	echo ${#xx}

	# total length of all elements in the array
	xx=$( IFS='' ; echo "${xpath[*]}" )
	echo ${#xx}

	unset xpath[nelem-1]

	nelem=${#xpath[@]}
	echo ${#xpath[@]} -- $nelem

	# arrays and things that look like index assignments
	array=(42 [1]=14 [2]=44)

	array2=(grep [ 123 ] \*)

	echo ${array[@]}
	echo "${array2[@]}"

	# arrays and implicit arithmetic evaluation
	declare -i -a iarray

	iarray=( 2+4 1+6 7+2 )
	echo ${iarray[@]}

	iarray[4]=4+1
	echo ${iarray[@]}

	# make sure assignment using the compound assignment syntax removes all
	# of the old elements from the array value
	barray=(old1 old2 old3 old4 old5)
	barray=(new1 new2 new3)
	echo "length = ${#barray[@]}"
	echo "value = ${barray[*]}"

	# make sure the array code behaves correctly with respect to unset variables
	set -u
	( echo ${#narray[4]} )

	# some old bugs and ksh93 compatibility tests
	set +u
	cd /tmp

	touch 1=bar
	foo=([10]="bar")
	echo ${foo[0]}
	rm 1=bar

	foo=(a b c d e f g)
	echo ${foo[@]}

	# quoted reserved words are ok
	foo=(\for \case \if \then \else)
	echo ${foo[@]}

	# quoted metacharacters are ok
	foo=( [1]='<>' [2]='<' [3]='>' [4]='!' )
	echo ${foo[@]}

	# numbers are just words when not in a redirection context
	foo=( 12 14 16 18 20 )
	echo ${foo[@]}

	foo=( 4414758999202 )
	echo ${foo[@]}

	# this was a bug in all versions of bash 2.x up to and including bash-2.04
	declare -a ddd=(aaa
	bbb)
	echo ${ddd[@]}

	# errors until post-bash-2.05a; now reserved words are OK
	foo=(a b c for case if then else)

	foo=(for case if then else)

	# errors
	metas=( <> < > ! )
	metas=( [1]=<> [2]=< [3]=> [4]=! )

	# various expansions that didn't really work right until post-bash-2.04
	foo='abc'
	echo ${foo[0]} ${#foo[0]}
	echo ${foo[1]} ${#foo[1]}
	echo ${foo[@]} ${#foo[@]}
	echo ${foo[]} ${#foo[]}

	foo=''
	echo ${foo[0]} ${#foo[0]}
	echo ${foo[1]} ${#foo[1]}
	echo ${foo[@]} ${#foo[@]}
	echo ${foo[]} ${#foo[]}