| 1 | ## compare_shells: dash bash mksh ash
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| 2 | ## oils_failures_allowed: 3
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| 3 |
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| 4 | #### getopts empty
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| 5 | set --
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| 6 | getopts 'a:' opt
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| 7 | echo "status=$? opt=$opt OPTARG=$OPTARG"
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| 8 | ## stdout: status=1 opt=? OPTARG=
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| 9 |
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| 10 | #### getopts sees unknown arg
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| 11 | set -- -Z
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| 12 | getopts 'a:' opt
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| 13 | echo "status=$? opt=$opt OPTARG=$OPTARG"
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| 14 | ## STDOUT:
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| 15 | status=0 opt=? OPTARG=
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| 16 | ## END
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| 17 |
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| 18 | #### getopts three invocations
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| 19 | set -- -h -c foo
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| 20 | getopts 'hc:' opt
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| 21 | echo status=$? opt=$opt
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| 22 | getopts 'hc:' opt
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| 23 | echo status=$? opt=$opt
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| 24 | getopts 'hc:' opt
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| 25 | echo status=$? opt=$opt
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| 26 | ## STDOUT:
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| 27 | status=0 opt=h
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| 28 | status=0 opt=c
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| 29 | status=1 opt=?
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| 30 | ## END
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| 31 |
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| 32 | #### getopts resets OPTARG
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| 33 | set -- -c foo -h
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| 34 | getopts 'hc:' opt
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| 35 | echo status=$? opt=$opt OPTARG=$OPTARG
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| 36 | getopts 'hc:' opt
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| 37 | echo status=$? opt=$opt OPTARG=$OPTARG
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| 38 | ## STDOUT:
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| 39 | status=0 opt=c OPTARG=foo
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| 40 | status=0 opt=h OPTARG=
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| 41 | ## END
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| 42 |
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| 43 | #### OPTARG is empty (not unset) after parsing a flag doesn't take an arg
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| 44 |
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| 45 | set -u
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| 46 | getopts 'ab' name '-a'
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| 47 | echo name=$name
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| 48 | echo OPTARG=$OPTARG
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| 49 |
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| 50 | ## STDOUT:
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| 51 | name=a
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| 52 | OPTARG=
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| 53 | ## END
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| 54 |
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| 55 | ## BUG bash/mksh status: 1
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| 56 | ## BUG bash/mksh STDOUT:
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| 57 | name=a
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| 58 | ## END
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| 59 |
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| 60 | #### Basic getopts invocation
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| 61 | set -- -h -c foo x y z
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| 62 | FLAG_h=0
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| 63 | FLAG_c=''
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| 64 | while getopts "hc:" opt; do
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| 65 | case $opt in
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| 66 | h) FLAG_h=1 ;;
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| 67 | c) FLAG_c="$OPTARG" ;;
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| 68 | esac
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| 69 | done
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| 70 | shift $(( OPTIND - 1 ))
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| 71 | echo h=$FLAG_h c=$FLAG_c optind=$OPTIND argv=$@
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| 72 | ## stdout: h=1 c=foo optind=4 argv=x y z
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| 73 |
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| 74 | #### getopts with invalid variable name
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| 75 | set -- -c foo -h
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| 76 | getopts 'hc:' opt-
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| 77 | echo status=$? opt=$opt OPTARG=$OPTARG OPTIND=$OPTIND
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| 78 | ## stdout: status=2 opt= OPTARG=foo OPTIND=3
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| 79 | ## OK bash stdout: status=1 opt= OPTARG=foo OPTIND=3
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| 80 | ## OK mksh stdout: status=1 opt= OPTARG= OPTIND=1
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| 81 |
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| 82 | #### getopts with invalid flag
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| 83 | set -- -h -x
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| 84 | while getopts "hc:" opt; do
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| 85 | case $opt in
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| 86 | h) FLAG_h=1 ;;
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| 87 | c) FLAG_c="$OPTARG" ;;
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| 88 | '?') echo ERROR $OPTIND; exit 2; ;;
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| 89 | esac
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| 90 | done
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| 91 | echo status=$?
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| 92 | ## stdout: ERROR 3
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| 93 | ## status: 2
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| 94 |
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| 95 | #### getopts with with -
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| 96 | set -- -h -
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| 97 | echo "$@"
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| 98 | while getopts "hc:" opt; do
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| 99 | case $opt in
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| 100 | h) FLAG_h=1 ;;
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| 101 | c) FLAG_c="$OPTARG" ;;
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| 102 | '?') echo ERROR $OPTIND; exit 2; ;;
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| 103 | esac
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| 104 | done
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| 105 | echo status=$?
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| 106 | ## STDOUT:
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| 107 | -h -
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| 108 | status=0
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| 109 | ## END
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| 110 |
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| 111 | #### getopts missing required argument
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| 112 | set -- -h -c
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| 113 | while getopts "hc:" opt; do
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| 114 | case $opt in
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| 115 | h) FLAG_h=1 ;;
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| 116 | c) FLAG_c="$OPTARG" ;;
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| 117 | '?') echo ERROR $OPTIND; exit 2; ;;
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| 118 | esac
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| 119 | done
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| 120 | echo status=$?
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| 121 | ## stdout: ERROR 3
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| 122 | ## status: 2
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| 123 |
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| 124 | #### getopts doesn't look for flags after args
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| 125 | set -- x -h -c y
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| 126 | FLAG_h=0
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| 127 | FLAG_c=''
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| 128 | while getopts "hc:" opt; do
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| 129 | case $opt in
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| 130 | h) FLAG_h=1 ;;
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| 131 | c) FLAG_c="$OPTARG" ;;
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| 132 | esac
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| 133 | done
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| 134 | shift $(( OPTIND - 1 ))
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| 135 | echo h=$FLAG_h c=$FLAG_c optind=$OPTIND argv=$@
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| 136 | ## stdout: h=0 c= optind=1 argv=x -h -c y
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| 137 |
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| 138 | #### getopts with explicit args
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| 139 | # NOTE: Alpine doesn't appear to use this, but bash-completion does.
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| 140 | FLAG_h=0
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| 141 | FLAG_c=''
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| 142 | arg=''
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| 143 | set -- A B C
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| 144 | while getopts "hc:" opt -h -c foo x y z; do
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| 145 | case $opt in
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| 146 | h) FLAG_h=1 ;;
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| 147 | c) FLAG_c="$OPTARG" ;;
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| 148 | esac
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| 149 | done
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| 150 | echo h=$FLAG_h c=$FLAG_c optind=$OPTIND argv=$@
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| 151 | ## STDOUT:
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| 152 | h=1 c=foo optind=4 argv=A B C
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| 153 | ## END
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| 154 |
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| 155 | #### OPTIND
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| 156 | echo $OPTIND
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| 157 | ## stdout: 1
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| 158 |
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| 159 | #### OPTIND after multiple getopts with same spec
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| 160 | while getopts "hc:" opt; do
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| 161 | echo '-'
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| 162 | done
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| 163 | echo OPTIND=$OPTIND
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| 164 |
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| 165 | set -- -h -c foo x y z
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| 166 | while getopts "hc:" opt; do
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| 167 | echo '-'
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| 168 | done
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| 169 | echo OPTIND=$OPTIND
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| 170 |
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| 171 | set --
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| 172 | while getopts "hc:" opt; do
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| 173 | echo '-'
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| 174 | done
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| 175 | echo OPTIND=$OPTIND
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| 176 |
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| 177 | ## STDOUT:
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| 178 | OPTIND=1
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| 179 | -
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| 180 | -
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| 181 | OPTIND=4
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| 182 | OPTIND=1
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| 183 | ## END
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| 184 | ## BUG mksh STDOUT:
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| 185 | OPTIND=1
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| 186 | -
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| 187 | -
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| 188 | OPTIND=4
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| 189 | OPTIND=4
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| 190 | ## END
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| 191 |
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| 192 | #### OPTIND after multiple getopts with different spec
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| 193 | # Wow this is poorly specified! A fundamental design problem with the global
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| 194 | # variable OPTIND.
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| 195 | set -- -a
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| 196 | while getopts "ab:" opt; do
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| 197 | echo '.'
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| 198 | done
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| 199 | echo OPTIND=$OPTIND
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| 200 |
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| 201 | set -- -c -d -e foo
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| 202 | while getopts "cde:" opt; do
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| 203 | echo '-'
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| 204 | done
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| 205 | echo OPTIND=$OPTIND
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| 206 |
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| 207 | set -- -f
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| 208 | while getopts "f:" opt; do
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| 209 | echo '_'
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| 210 | done
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| 211 | echo OPTIND=$OPTIND
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| 212 |
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| 213 | ## STDOUT:
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| 214 | .
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| 215 | OPTIND=2
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| 216 | -
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| 217 | -
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| 218 | OPTIND=5
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| 219 | OPTIND=2
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| 220 | ## END
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| 221 | ## BUG ash/dash STDOUT:
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| 222 | .
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| 223 | OPTIND=2
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| 224 | -
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| 225 | -
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| 226 | -
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| 227 | OPTIND=5
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| 228 | _
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| 229 | OPTIND=2
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| 230 | ## END
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| 231 | ## BUG mksh STDOUT:
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| 232 | .
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| 233 | OPTIND=2
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| 234 | -
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| 235 | -
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| 236 | OPTIND=5
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| 237 | OPTIND=5
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| 238 | ## END
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| 239 |
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| 240 | #### OPTIND narrowed down
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| 241 | FLAG_a=
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| 242 | FLAG_b=
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| 243 | FLAG_c=
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| 244 | FLAG_d=
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| 245 | FLAG_e=
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| 246 | set -- -a
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| 247 | while getopts "ab:" opt; do
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| 248 | case $opt in
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| 249 | a) FLAG_a=1 ;;
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| 250 | b) FLAG_b="$OPTARG" ;;
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| 251 | esac
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| 252 | done
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| 253 | # Bash doesn't reset OPTIND! It skips over c! mksh at least warns about this!
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| 254 | # You have to reset OPTIND yourself.
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| 255 |
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| 256 | set -- -c -d -e E
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| 257 | while getopts "cde:" opt; do
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| 258 | case $opt in
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| 259 | c) FLAG_c=1 ;;
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| 260 | d) FLAG_d=1 ;;
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| 261 | e) FLAG_e="$OPTARG" ;;
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| 262 | esac
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| 263 | done
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| 264 |
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| 265 | echo a=$FLAG_a b=$FLAG_b c=$FLAG_c d=$FLAG_d e=$FLAG_e
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| 266 |
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| 267 | ## STDOUT:
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| 268 | a=1 b= c=1 d=1 e=E
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| 269 | ## END
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| 270 |
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| 271 | ## BUG bash/mksh STDOUT:
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| 272 | a=1 b= c= d=1 e=E
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| 273 | ## END
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| 274 |
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| 275 |
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| 276 | #### Getopts parses the function's arguments
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| 277 | FLAG_h=0
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| 278 | FLAG_c=''
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| 279 | myfunc() {
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| 280 | while getopts "hc:" opt; do
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| 281 | case $opt in
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| 282 | h) FLAG_h=1 ;;
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| 283 | c) FLAG_c="$OPTARG" ;;
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| 284 | esac
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| 285 | done
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| 286 | }
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| 287 | set -- -h -c foo x y z
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| 288 | myfunc -c bar
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| 289 | echo h=$FLAG_h c=$FLAG_c opt=$opt optind=$OPTIND argv=$@
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| 290 | ## stdout: h=0 c=bar opt=? optind=3 argv=-h -c foo x y z
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| 291 |
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| 292 | #### Local OPTIND
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| 293 | # minimal test case extracted from bash-completion
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| 294 | min() {
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| 295 | local OPTIND=1
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| 296 |
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| 297 | while getopts "n:e:o:i:s" flag "$@"; do
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| 298 | echo "loop $OPTIND";
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| 299 | done
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| 300 | }
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| 301 | min -s
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| 302 | ## stdout: loop 2
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| 303 |
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| 304 | #### two flags: -ab
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| 305 | getopts "ab" opt -ab
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| 306 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 307 | getopts "ab" opt -ab
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| 308 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 309 | ## STDOUT:
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| 310 | OPTIND=1 opt=a OPTARG=
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| 311 | OPTIND=2 opt=b OPTARG=
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| 312 | ## END
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| 313 | ## OK dash/mksh/ash STDOUT:
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| 314 | OPTIND=2 opt=a OPTARG=
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| 315 | OPTIND=2 opt=b OPTARG=
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| 316 | ## END
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| 317 |
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| 318 | #### flag and arg: -c10
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| 319 | getopts "c:" opt -c10
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| 320 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 321 | getopts "c:" opt -c10
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| 322 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 323 | ## STDOUT:
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| 324 | OPTIND=2 opt=c OPTARG=10
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| 325 | OPTIND=2 opt=? OPTARG=
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| 326 | ## END
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| 327 | ## BUG dash STDOUT:
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| 328 | OPTIND=2 opt=c OPTARG=10
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| 329 | OPTIND=2 opt=? OPTARG=10
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| 330 | ## END
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| 331 |
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| 332 | #### More Smooshing 1
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| 333 | getopts "ab:c:" opt -ab hi -c hello
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| 334 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 335 | getopts "ab:c:" opt -ab hi -c hello
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| 336 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 337 | getopts "ab:c:" opt -ab hi -c hello
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| 338 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 339 | ## STDOUT:
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| 340 | OPTIND=1 opt=a OPTARG=
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| 341 | OPTIND=3 opt=b OPTARG=hi
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| 342 | OPTIND=5 opt=c OPTARG=hello
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| 343 | ## END
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| 344 | ## OK dash/mksh/ash STDOUT:
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| 345 | OPTIND=2 opt=a OPTARG=
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| 346 | OPTIND=3 opt=b OPTARG=hi
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| 347 | OPTIND=5 opt=c OPTARG=hello
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| 348 | ## END
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| 349 |
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| 350 | #### More Smooshing 2
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| 351 | getopts "abc:" opt -abc10
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| 352 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 353 | getopts "abc:" opt -abc10
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| 354 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 355 | getopts "abc:" opt -abc10
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| 356 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 357 | ## STDOUT:
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| 358 | OPTIND=1 opt=a OPTARG=
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| 359 | OPTIND=1 opt=b OPTARG=
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| 360 | OPTIND=2 opt=c OPTARG=10
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| 361 | ## END
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| 362 | ## OK dash/mksh/ash STDOUT:
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| 363 | OPTIND=2 opt=a OPTARG=
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| 364 | OPTIND=2 opt=b OPTARG=
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| 365 | OPTIND=2 opt=c OPTARG=10
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| 366 | ## END
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| 367 |
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| 368 | #### OPTIND should be >= 1 (regression)
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| 369 | OPTIND=-1
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| 370 | getopts a: foo
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| 371 | echo status=$?
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| 372 |
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| 373 | OPTIND=0
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| 374 | getopts a: foo
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| 375 | echo status=$?
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| 376 | ## STDOUT:
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| 377 | status=1
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| 378 | status=1
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| 379 | ## END
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| 380 | ## OK dash status: 2
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| 381 | ## OK dash stdout-json: ""
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| 382 |
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| 383 |
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| 384 | #### getopts bug #1523
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| 385 |
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| 386 | $SH $REPO_ROOT/spec/testdata/getopts-1523.sh -abcdef -abcde
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| 387 |
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| 388 | ## status: 1
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| 389 | ## STDOUT:
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| 390 | opt:a
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| 391 | opt:b
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| 392 | opt:c arg:def
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| 393 | opt:a
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| 394 | opt:b
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| 395 | opt:c arg:de
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| 396 | ## END
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| 397 |
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| 398 | #### More regression for #1523
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| 399 |
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| 400 | $SH $REPO_ROOT/spec/testdata/getopts-1523.sh -abcdef -xyz
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| 401 |
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| 402 | ## status: 1
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| 403 | ## STDOUT:
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| 404 | opt:a
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| 405 | opt:b
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| 406 | opt:c arg:def
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| 407 | err:?
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| 408 | err:?
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| 409 | err:?
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| 410 | ## END
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| 411 |
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| 412 | #### getopts silent error reporting - invalid option
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| 413 | # Leading : in optspec enables silent mode: OPTARG=option char, no error msg
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| 414 | set -- -Z
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| 415 | getopts ':a:' opt 2>&1
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| 416 | echo "status=$? opt=$opt OPTARG=$OPTARG"
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| 417 | ## status: 0
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| 418 | ## stdout: status=0 opt=? OPTARG=Z
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| 419 | ## STDERR:
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| 420 | ## END
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| 421 |
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| 422 | #### getopts silent error reporting - missing required argument
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| 423 | # Silent mode returns ':' and sets OPTARG to option char
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| 424 | set -- -a
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| 425 | getopts ':a:' opt 2>&1
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| 426 | echo "status=$? opt=$opt OPTARG=$OPTARG"
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| 427 | ## status: 0
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| 428 | ## stdout: status=0 opt=: OPTARG=a
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| 429 | ## STDERR:
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| 430 | ## END
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| 431 |
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| 432 | #### getopts normal mode - invalid option (compare with silent)
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| 433 | # Normal mode: OPTARG is empty, prints error message
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| 434 | set -- -Z
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| 435 | getopts 'a:' opt 2>/dev/null
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| 436 | echo "status=$? opt=$opt OPTARG=$OPTARG"
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| 437 | ## status: 0
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| 438 | ## stdout: status=0 opt=? OPTARG=
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| 439 |
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| 440 | #### getopts normal mode - missing required argument (compare with silent)
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| 441 | # Normal mode returns '?', OPTARG is empty
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| 442 | set -- -a
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| 443 | getopts 'a:' opt 2>/dev/null
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| 444 | echo "status=$? opt=$opt OPTARG=$OPTARG"
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| 445 | ## status: 0
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| 446 | ## stdout: status=0 opt=? OPTARG=
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| 447 |
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| 448 | #### getopts handles '--' #2579
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| 449 | set -- "-a" "--"
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| 450 | while getopts "a" name; do
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| 451 | case "$name" in
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| 452 | a)
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| 453 | echo "a"
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| 454 | ;;
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| 455 | ?)
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| 456 | echo "?"
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| 457 | ;;
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| 458 | esac
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| 459 | done
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| 460 | echo "name=$name"
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| 461 | echo "$OPTIND"
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| 462 | ## STDOUT:
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| 463 | a
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| 464 | name=?
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| 465 | 3
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| 466 | ## END
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| 467 |
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| 468 | #### getopts leaves all args after '--' as operands #2579
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| 469 | set -- "-a" "--" "-c" "operand"
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| 470 | while getopts "a" name; do
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| 471 | case "$name" in
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| 472 | a)
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| 473 | echo "a"
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| 474 | ;;
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| 475 | c)
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| 476 | echo "c"
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| 477 | ;;
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| 478 | ?)
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| 479 | echo "?"
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| 480 | ;;
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| 481 | esac
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| 482 | done
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| 483 | shift $((OPTIND - 1))
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| 484 | echo "$#"
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| 485 | echo "$@"
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| 486 | ## STDOUT:
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| 487 | a
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| 488 | 2
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| 489 | -c operand
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| 490 | ## END
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