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author | Tom Ryder <tom@sanctum.geek.nz> | 2017-01-25 21:05:19 +1300 |
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committer | Tom Ryder <tom@sanctum.geek.nz> | 2017-01-25 21:05:19 +1300 |
commit | cc5634afcf6590f947da526f408d1985fffeb16d (patch) | |
tree | 03b67d6c4fc4d54b5add6244b1efebc546f59432 /sh | |
parent | Merge branch 'master' into port/bsd/freebsd (diff) | |
parent | Add "pop" and "shift" methods to path() (diff) | |
download | dotfiles-cc5634afcf6590f947da526f408d1985fffeb16d.tar.gz dotfiles-cc5634afcf6590f947da526f408d1985fffeb16d.zip |
Merge branch 'master' into port/bsd/freebsd
Diffstat (limited to 'sh')
-rw-r--r-- | sh/profile.d/options.sh | 17 | ||||
-rw-r--r-- | sh/shrc.d/path.sh | 38 |
2 files changed, 47 insertions, 8 deletions
diff --git a/sh/profile.d/options.sh b/sh/profile.d/options.sh index 345888d0..a668a360 100644 --- a/sh/profile.d/options.sh +++ b/sh/profile.d/options.sh @@ -1,10 +1,13 @@ # Cache the options available to certain programs. Run all this in a subshell # (none of its state needs to endure in the session) ( -options() ( +options() { # Check or create the directory to cache the options + # Shift the program name off; remaining arguments are the options to check dir=$HOME/.cache/$1 + prog=$1 + shift # Directory already exists; bail out [ -d "$dir" ] && exit @@ -14,18 +17,16 @@ options() ( cd -- "$dir" || exit # Write the program's --help output to a file, even if it's empty - "$1" --help </dev/null >help 2>/dev/null || exit - - # Shift the program name off; remaining arguments are the options to check - shift + # This probably only works with GNU tools in general + "$prog" --help </dev/null >help 2>/dev/null || exit - # Iterate through some useful options and create files to show they're - # available if found in the help output + # Iterate through remaining arguments (desired options), creating files to + # show they're available if found in the help output for opt ; do command -p grep -q -- '[^[:alnum:]]--'"$opt"'[^[:alnum:]]' help && touch -- "$opt" done -) +} # Cache options for bc(1) options bc \ diff --git a/sh/shrc.d/path.sh b/sh/shrc.d/path.sh index 23eec75b..2759e11f 100644 --- a/sh/shrc.d/path.sh +++ b/sh/shrc.d/path.sh @@ -79,6 +79,40 @@ path() { PATH=${PATH%%:} ;; + # Remove the first directory in $PATH + shift) + case $PATH in + '') + printf >&2 'path(): %s: PATH is empty!\n' "$@" + return 1 + ;; + *:*) + PATH=${PATH#*:} + ;; + *) + # shellcheck disable=SC2123 + PATH= + ;; + esac + ;; + + # Remove the last directory in $PATH + pop) + case $PATH in + '') + printf >&2 'path(): %s: PATH is empty!\n' "$@" + return 1 + ;; + *:*) + PATH=${PATH%:*} + ;; + *) + # shellcheck disable=SC2123 + PATH= + ;; + esac + ;; + # Check whether a directory is in PATH check) path _argcheck "$@" || return @@ -103,6 +137,10 @@ USAGE: Add directory DIR (default $PWD) to the end of PATH path remove [DIR] Remove directory DIR (default $PWD) from PATH + path shift + Remove the first directory from PATH + path pop + Remove the last directory from PATH path check [DIR] Return whether directory DIR (default $PWD) is a component of PATH path help |