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Code Issues Releases Wiki Activity

bible: better dirname function

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Dylan Araps
2019-09-22 14:25:57 +03:00
parent 70dbe8feba
commit 4d14f5446f
2 changed files with 30 additions and 12 deletions
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21
README.md
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@@ -1070,15 +1070,24 @@ Alternative to the `dirname` command.
```sh ```sh
dirname() { dirname() {
# Usage: dirname "path" # Usage: dirname "path"
dir=${1:-.} local tmp=${1:-.}
dir=${dir%%${dir##*[!/]}}
[[ "${dir##*/*}" ]] && dir=. [[ $tmp != *[!/]* ]] && {
printf '/\n'
return
}
dir=${dir%/*} tmp=${tmp%%"${tmp##*[!/]}"}
dir=${dir%%${dir##*[!/]}}
printf '%s\n' "${dir:-/}" [[ $tmp != */* ]] && {
printf '.\n'
return
}
tmp=${tmp%/*}
tmp=${tmp%%"${tmp##*[!/]}"}
printf '%s\n' "${tmp:-/}"
} }
``` ```

21
manuscript/chapter5.txt
View File

@@ -9,15 +9,24 @@ Alternative to the `dirname` command.
```sh ```sh
dirname() { dirname() {
# Usage: dirname "path" # Usage: dirname "path"
dir=${1:-.} local tmp=${1:-.}
dir=${dir%%${dir##*[!/]}}
[[ "${dir##*/*}" ]] && dir=. [[ $tmp != *[!/]* ]] && {
printf '/\n'
return
}
dir=${dir%/*} tmp=${tmp%%"${tmp##*[!/]}"}
dir=${dir%%${dir##*[!/]}}
printf '%s\n' "${dir:-/}" [[ $tmp != */* ]] && {
printf '.\n'
return
}
tmp=${tmp%/*}
tmp=${tmp%%"${tmp##*[!/]}"}
printf '%s\n' "${tmp:-/}"
} }
``` ```