[Fix #125] Wrap GNU utilities in functions
There are three methods for calling prefixed GNU utilities interactively non-prefixed aliasing, hashing, and wrapper functions. Two of these methods are unreliable and are discussed bellow for reference only. The aliasing method is unreliable since aliases are at risk of being overridden resulting in non-GNU utilities being called with invalid switches. The hashing method is unreliable because hashed commands are lost whenever hash -r or rehash -f are called. Thus, said built-ins have to be wrapped to rehash GNU utilities. Unfortunately, altering $path will cause Zsh to call the built-in rehash instead of the wrapped one resulting in the hashed commands being lost. The wrapper function method is currently the most reliable and is the one used.
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Sorin Ionescu
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1 changed files with 39 additions and 62 deletions
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@ -6,79 +6,56 @@
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#
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# Get the prefix or use the default.
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zstyle -s ':omz:module:gnu-utils' prefix '_gnu_utils_prefix' ||
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_gnu_utils_prefix='g'
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zstyle -s ':omz:module:gnu-utils' prefix '_gnu_utils_p' || _gnu_utils_p='g'
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# Check for the presence of GNU Core Utilities.
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if (( ! $+commands[${_gnu_utils_prefix}dircolors] )); then
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if (( ! ${+commands[${_gnu_utils_p}dircolors]} )); then
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return 1
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fi
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function _gnu-utils-hash-commands {
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emulate -L zsh
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_gnu_utils_cmds=(
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# Coreutils
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'[' 'base64' 'basename' 'cat' 'chcon' 'chgrp' 'chmod' 'chown'
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'chroot' 'cksum' 'comm' 'cp' 'csplit' 'cut' 'date' 'dd' 'df'
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'dir' 'dircolors' 'dirname' 'du' 'echo' 'env' 'expand' 'expr'
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'factor' 'false' 'fmt' 'fold' 'groups' 'head' 'hostid' 'id'
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'install' 'join' 'kill' 'link' 'ln' 'logname' 'ls' 'md5sum'
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'mkdir' 'mkfifo' 'mknod' 'mktemp' 'mv' 'nice' 'nl' 'nohup' 'nproc'
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'od' 'paste' 'pathchk' 'pinee' 'pr' 'printenv' 'printf' 'ptx'
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'pwd' 'readlink' 'realpath' 'rm' 'rmdir' 'runcon' 'seq' 'sha1sum'
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'sha224sum' 'sha256sum' 'sha384sum' 'sha512sum' 'shred' 'shuf'
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'sleep' 'sort' 'split' 'stat' 'stty' 'sum' 'sync' 'tac' 'tail'
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'tee' 'test' 'timeout' 'touch' 'tr' 'true' 'truncate' 'tsort'
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'tty' 'uname' 'unexpand' 'uniq' 'unlink' 'uptime' 'users' 'vdir'
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'wc' 'who' 'whoami' 'yes'
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local cmds
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local cmd
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local pcmd
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# The following are not part of Coreutils but installed separately.
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cmds=(
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# Coreutils
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'[' 'base64' 'basename' 'cat' 'chcon' 'chgrp' 'chmod' 'chown'
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'chroot' 'cksum' 'comm' 'cp' 'csplit' 'cut' 'date' 'dd' 'df'
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'dir' 'dircolors' 'dirname' 'du' 'echo' 'env' 'expand' 'expr'
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'factor' 'false' 'fmt' 'fold' 'groups' 'head' 'hostid' 'id'
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'install' 'join' 'kill' 'link' 'ln' 'logname' 'ls' 'md5sum'
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'mkdir' 'mkfifo' 'mknod' 'mktemp' 'mv' 'nice' 'nl' 'nohup' 'nproc'
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'od' 'paste' 'pathchk' 'pinee' 'pr' 'printenv' 'printf' 'ptx'
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'pwd' 'readlink' 'realpath' 'rm' 'rmdir' 'runcon' 'seq' 'sha1sum'
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'sha224sum' 'sha256sum' 'sha384sum' 'sha512sum' 'shred' 'shuf'
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'sleep' 'sort' 'split' 'stat' 'stty' 'sum' 'sync' 'tac' 'tail'
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'tee' 'test' 'timeout' 'touch' 'tr' 'true' 'truncate' 'tsort'
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'tty' 'uname' 'unexpand' 'uniq' 'unlink' 'uptime' 'users' 'vdir'
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'wc' 'who' 'whoami' 'yes'
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# Binutils
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'addr2line' 'ar' 'c++filt' 'elfedit' 'nm' 'objcopy' 'objdump'
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'ranlib' 'readelf' 'size' 'strings' 'strip'
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# The following are not part of Coreutils but installed separately.
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# Findutils
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'find' 'locate' 'oldfind' 'updatedb' 'xargs'
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# Binutils
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'addr2line' 'ar' 'c++filt' 'elfedit' 'nm' 'objcopy' 'objdump'
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'ranlib' 'readelf' 'size' 'strings' 'strip'
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# Libtool
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'libtool' 'libtoolize'
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# Findutils
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'find' 'locate' 'oldfind' 'updatedb' 'xargs'
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# Miscellaneous
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'getopt' 'grep' 'indent' 'sed' 'tar' 'time' 'units' 'which'
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)
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# Libtool
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'libtool' 'libtoolize'
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# Miscellaneous
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'getopt' 'grep' 'indent' 'sed' 'tar' 'time' 'units' 'which'
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)
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for cmd in "$cmds[@]"; do
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#
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# This method allows for builtin commands to be primary but it's
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# lost if hash -r or rehash -f is executed. Thus, those two
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# functions have to be wrapped.
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#
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pcmd="${_gnu_utils_prefix}${cmd}"
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if (( $+commands[$pcmd] )); then
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builtin hash "$cmd"="$commands[$pcmd]"
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fi
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done
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return 0
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}
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_gnu-utils-hash-commands
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function hash {
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if (( $+argv[(er)-r] )) || (( $+argv[(er)-f] )); then
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builtin hash "$@"
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_gnu-utils-hash-commands
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else
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builtin hash "$@"
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# Wrap GNU utilities in functions.
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for _gnu_utils_cmd in "${_gnu_utils_cmds[@]}"; do
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_gnu_utils_pcmd="${_gnu_utils_p}${_gnu_utils_cmd}"
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if (( ${+commands[${_gnu_utils_pcmd}]} )); then
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eval "
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function ${_gnu_utils_cmd} {
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'${commands[${_gnu_utils_pcmd}]}' \"\$@\"
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}
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"
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fi
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}
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done
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function rehash {
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hash -r "$@"
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}
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unset _gnu_utils_{p,cmds,cmd,pcmd}
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