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#!/usr/bin/env bash |
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# |
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# Test the case statement |
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|
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#### Case statement |
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case a in |
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a) echo A ;; |
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*) echo star ;; |
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esac |
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## stdout: A |
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|
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#### Case statement with ;;& |
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# ;;& keeps testing conditions |
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# NOTE: ;& and ;;& are bash 4 only, no on Mac |
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case a in |
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a) echo A ;;& |
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*) echo star ;;& |
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*) echo star2 ;; |
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esac |
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## status: 0 |
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## stdout-json: "A\nstar\nstar2\n" |
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## N-I dash stdout-json: "" |
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## N-I dash status: 2 |
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|
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#### Case statement with ;& |
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# ;& ignores the next condition. Why would that be useful? |
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case a in |
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a) echo A ;& |
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XX) echo two ;& |
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YY) echo three ;; |
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esac |
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## status: 0 |
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## stdout-json: "A\ntwo\nthree\n" |
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## N-I dash stdout-json: "" |
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## N-I dash status: 2 |
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|
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#### Case with empty condition |
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case $empty in |
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''|foo) echo match ;; |
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*) echo no ;; |
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esac |
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## stdout: match |
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|
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#### Match a literal with a glob character |
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x='*.py' |
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case "$x" in |
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'*.py') echo match ;; |
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esac |
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## stdout: match |
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|
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#### Match a literal with a glob character with a dynamic pattern |
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x='b.py' |
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pat='[ab].py' |
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case "$x" in |
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$pat) echo match ;; |
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esac |
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## stdout: match |
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|
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#### Quoted literal in glob pattern |
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x='[ab].py' |
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pat='[ab].py' |
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case "$x" in |
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"$pat") echo match ;; |
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esac |
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## stdout: match |
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|
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#### Multiple Patterns Match |
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x=foo |
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result='-' |
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case "$x" in |
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f*|*o) result="$result X" |
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esac |
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echo $result |
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## stdout: - X |
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|
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#### Match one unicode char |
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|
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# These two code points form a single character. |
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two_code_points="__$(echo $'\u0061\u0300')__" |
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|
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# U+0061 is A, and U+0300 is an accent. |
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# |
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# (Example taken from # https://blog.golang.org/strings) |
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# |
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# However ? in bash/zsh only counts CODE POINTS. They do NOT take into account |
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# this case. |
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|
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for s in '__a__' '__μ__' "$two_code_points"; do |
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case $s in |
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__?__) |
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echo yes |
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;; |
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*) |
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echo no |
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esac |
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done |
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## STDOUT: |
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yes |
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yes |
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no |
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## END |
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## BUG dash/mksh STDOUT: |
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yes |
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no |
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no |
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## END |
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|
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#### case with single byte LC_ALL=C |
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|
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LC_ALL=C |
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|
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c=$(printf \\377) |
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|
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# OSH prints -1 here |
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#echo "${#c}" |
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|
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case $c in |
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'') echo a ;; |
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"$c") echo b ;; |
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esac |
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|
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## STDOUT: |
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b |
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## END |