tests/array.tests

   1 # this is needed so that the bad assignments (b[]=bcde, for example) do not
   2 # cause fatal shell errors when in posix mode
   3 set +o posix
   4
   5 set +a
   6 # The calls to egrep -v are to filter out builtin array variables that are
   7 # automatically set and possibly contain values that vary.
   8
   9 # this should be an error
  10 test=(first & second)
  11 echo $?
  12 unset test
  13
  14 # make sure declare -a converts an existing variable to an array
  15 unset a
  16 a=abcde
  17 declare -a a
  18 echo ${a[0]}
  19
  20 unset a
  21 a=abcde
  22 a[2]=bdef
  23
  24 declare -a b[256]
  25
  26 unset c[2]
  27 unset c[*]
  28
  29 a[1]=
  30
  31 _ENV=/bin/true
  32 x=${_ENV[(_$-=0)+(_=1)-_${-%%*i*}]}
  33
  34 declare -r c[100]
  35
  36 echo ${a[0]} ${a[4]}
  37 echo ${a[@]}
  38
  39 echo ${a[*]}
  40
  41 # this should print out values, too
  42 declare -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
  43
  44 unset a[7]
  45 echo ${a[*]}
  46
  47 unset a[4]
  48 echo ${a[*]}
  49
  50 echo ${a}
  51 echo "${a}"
  52 echo $a
  53
  54 unset a[0]
  55 echo ${a}
  56
  57 echo ${a[@]}
  58
  59 a[5]="hello world"
  60 echo ${a[5]}
  61 echo ${#a[5]}
  62
  63 echo ${#a[@]}
  64
  65 a[4+5/2]="test expression"
  66 echo ${a[@]}
  67
  68 readonly a[5]
  69 readonly a
  70 # these two lines should output `declare' commands
  71 readonly -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
  72 declare -ar | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
  73 # this line should output `readonly' commands, even for arrays
  74 set -o posix
  75 readonly -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
  76 set +o posix
  77
  78 declare -a d='([1]="" [2]="bdef" [5]="hello world" "test")'
  79 d[9]="ninth element"
  80
  81 declare -a e[10]=test
  82 declare -a e[10]='(test)'
  83
  84 pass=/etc/passwd
  85 declare -a f='("${d[@]}")'
  86 b=([0]=this [1]=is [2]=a [3]=test [4]="$PS1" [5]=$pass)
  87
  88 echo ${b[@]:2:3}
  89
  90 declare -pa | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
  91
  92 a[3]="this is a test"
  93
  94 b[]=bcde
  95 b[*]=aaa
  96 echo ${b[   ]}
  97
  98 c[-2]=4
  99 echo ${c[-4]}
 100
 101 d[7]=(abdedfegeee)
 102
 103 d=([]=abcde [1]="test test" [*]=last [-65]=negative )
 104
 105 unset d[12]
 106 unset e[*]
 107
 108 declare -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
 109
 110 ps1='hello'
 111 unset ps1[2]
 112 unset ${ps1[2]}
 113
 114 declare +a ps1
 115 declare +a c
 116
 117 # the prompt should not print when using a here doc
 118 read -p "array test: " -a rv <<!
 119 this is a test of read using arrays
 120 !
 121
 122 echo ${rv[0]} ${rv[4]}
 123 echo ${rv[@]}
 124
 125 # the variable should be converted to an array when `read -a' is done
 126 vv=1
 127 read -a vv <<!
 128 this is a test of arrays
 129 !
 130 echo ${vv[0]} ${vv[3]}
 131 echo ${vv[@]}
 132 unset vv
 133
 134 declare -a | egrep -v '(BASH_VERSINFO|PIPESTATUS|GROUPS)'
 135
 136 export rv
 137 #set
 138
 139 x[4]=bbb
 140 x=abde
 141 echo $x
 142 echo ${x[0]}
 143 echo ${x[4]}
 144 echo efgh | ( read x[1] ; echo ${x[1]} )
 145 echo wxyz | ( declare -a x ; read x ; echo $x ; echo ${x[0]} )
 146
 147 # Make sure that arrays can be used to save the positional paramters verbatim
 148 set -- a 'b c' d 'e f g' h
 149
 150 ARGV=( [0]=$0 "$@" )
 151
 152 for z in "${ARGV[@]}"
 153 do
 154         echo "$z"
 155 done
 156
 157 echo "$0"
 158 for z in "$@"
 159 do
 160         echo "$z"
 161 done
 162
 163 # do various pattern removal and length tests
 164 XPATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:.:/sbin:/usr/sbin
 165
 166 xpath=( $( IFS=: ; echo $XPATH ) )
 167
 168 echo ${xpath[@]}
 169 echo ${xpath[@]##*/}
 170 echo ${xpath[0]##*/}
 171 echo ${xpath[@]%%[!/]*}
 172 echo ${xpath[0]%%[!/]*}
 173
 174 # let's try to make it a DOS-style path
 175
 176 zecho "${xpath[@]/\//\\}"
 177 zecho "${xpath[@]//\//\\}"
 178 zecho "${xpath[@]//[\/]/\\}"
 179
 180 # length of the first element of the array, since array without subscript
 181 # is equivalent to referencing first element
 182 echo ${#xpath} -- ${#xpath[0]}
 183
 184 # number of elements in the array
 185 nelem=${#xpath[@]}
 186 echo ${#xpath[@]} -- $nelem
 187
 188 # total length of all elements in the array, including space separators
 189 xx="${xpath[*]}"
 190 echo ${#xx}
 191
 192 # total length of all elements in the array
 193 xx=$( IFS='' ; echo "${xpath[*]}" )
 194 echo ${#xx}
 195
 196 unset xpath[nelem-1]
 197
 198 nelem=${#xpath[@]}
 199 echo ${#xpath[@]} -- $nelem
 200
 201 # arrays and things that look like index assignments
 202 array=(42 [1]=14 [2]=44)
 203
 204 array2=(grep [ 123 ] \*)
 205
 206 echo ${array[@]}
 207 echo "${array2[@]}"
 208
 209 # arrays and implicit arithmetic evaluation
 210 declare -i -a iarray
 211
 212 iarray=( 2+4 1+6 7+2 )
 213 echo ${iarray[@]}
 214
 215 iarray[4]=4+1
 216 echo ${iarray[@]}
 217
 218 # make sure assignment using the compound assignment syntax removes all
 219 # of the old elements from the array value
 220 barray=(old1 old2 old3 old4 old5)
 221 barray=(new1 new2 new3)
 222 echo "length = ${#barray[@]}"
 223 echo "value = ${barray[*]}"
 224
 225 # make sure the array code behaves correctly with respect to unset variables
 226 set -u
 227 ( echo ${#narray[4]} )
 228
 229 # some old bugs and ksh93 compatibility tests
 230 set +u
 231 cd /tmp
 232
 233 touch 1=bar
 234 foo=([10]="bar")
 235 echo ${foo[0]}
 236 rm 1=bar
 237
 238 foo=(a b c d e f g)
 239 echo ${foo[@]}
 240
 241 # quoted reserved words are ok
 242 foo=(\for \case \if \then \else)
 243 echo ${foo[@]}
 244
 245 # quoted metacharacters are ok
 246 foo=( [1]='<>' [2]='<' [3]='>' [4]='!' )
 247 echo ${foo[@]}
 248
 249 # numbers are just words when not in a redirection context
 250 foo=( 12 14 16 18 20 )
 251 echo ${foo[@]}
 252
 253 foo=( 4414758999202 )
 254 echo ${foo[@]}
 255
 256 # this was a bug in all versions of bash 2.x up to and including bash-2.04
 257 declare -a ddd=(aaa
 258 bbb)
 259 echo ${ddd[@]}
 260
 261 # errors
 262 foo=(a b c for case if then else)
 263
 264 foo=(for case if then else)
 265
 266 metas=( <> < > ! )
 267 metas=( [1]=<> [2]=< [3]=> [4]=! )
 268
 269 # various expansions that didn't really work right until post-bash-2.04
 270 foo='abc'
 271 echo ${foo[0]} ${#foo[0]}
 272 echo ${foo[1]} ${#foo[1]}
 273 echo ${foo[@]} ${#foo[@]}
 274 echo ${foo[*]} ${#foo[*]}
 275
 276 foo=''
 277 echo ${foo[0]} ${#foo[0]}
 278 echo ${foo[1]} ${#foo[1]}
 279 echo ${foo[@]} ${#foo[@]}
 280 echo ${foo[*]} ${#foo[*]}