zsh-syntax-highlighting/zsh-syntax-highlighting.zsh

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#!/usr/bin/env zsh
# Copyleft 2010 zsh-syntax-highlighting contributors
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# http://github.com/nicoulaj/zsh-syntax-highlighting
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# All wrongs reserved.
# Token types styles.
# See http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#SEC135
ZLE_RESERVED_WORD_STYLE='fg=yellow,bold'
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ZLE_ALIAS_STYLE='fg=green,bold'
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ZLE_BUILTIN_STYLE='fg=cyan,bold'
ZLE_FUNCTION_STYLE='fg=blue,bold'
ZLE_COMMAND_STYLE='fg=green,bold'
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ZLE_PATH_STYLE='fg=white,underline'
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ZLE_COMMAND_UNKNOWN_TOKEN_STYLE='fg=red,bold'
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ZLE_HYPHEN_CLI_OPTION='fg=white'
ZLE_DOUBLE_HYPHEN_CLI_OPTION='fg=white'
ZLE_SINGLE_QUOTED='fg=yellow'
ZLE_DOUBLE_QUOTED='fg=yellow'
ZLE_DOLLAR_DOUBLE_QUOTED='fg=cyan'
ZLE_BACK_DOUBLE_QUOTED='fg=magenta'
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ZLE_BACK_QUOTED='fg=cyan,bold'
ZLE_GLOBING='fg=blue,bold'
ZLE_DEFAULT='fg=white,bold'
ZLE_TOKENS_FOLLOWED_BY_COMMANDS=('|' '||' ';' '&' '&&' 'sudo' 'start' 'time' 'strace' 'noglob' 'command' 'builtin')
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_check_path() {
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[[ -z $arg ]] && return 1
[[ -e $arg ]] && return 0
[[ ! -e ${arg:h} ]] && return 1
[[ ${#BUFFER} == $end_pos && -n $(print $arg*(N)) ]] && return 0
return 1
}
# hightlight special chars inside double-quoted strings
_hl_string() {
local i
local j
local k
local c
for (( i = 0 ; i < end_pos - start_pos ; i += 1 )) ; do
(( j = i + start_pos - 1 ))
(( k = j + 1 ))
c="$arg[$i]"
[[ "$c" = '$' ]] && region_highlight+=("$j $k $ZLE_DOLLAR_DOUBLE_QUOTED")
if [[ "$c" = '\' ]] ; then
(( k = k + 1 ))
region_highlight+=("$j $k $ZLE_BACK_DOUBLE_QUOTED")
fi
done
}
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# Recolorize the current ZLE buffer.
colorize-zle-buffer() {
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setopt localoptions extendedglob bareglobqual
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region_highlight=()
colorize=true
start_pos=0
for arg in ${(z)BUFFER}; do
local substr_color=0
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((start_pos+=${#BUFFER[$start_pos+1,-1]}-${#${BUFFER[$start_pos+1,-1]##[[:space:]]#}}))
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((end_pos=$start_pos+${#arg}))
if $colorize; then
colorize=false
res=$(LC_ALL=C builtin type -w $arg 2>/dev/null)
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case $res in
*': reserved') style=$ZLE_RESERVED_WORD_STYLE;;
*': alias') style=$ZLE_ALIAS_STYLE;;
*': builtin') style=$ZLE_BUILTIN_STYLE;;
*': function') style=$ZLE_FUNCTION_STYLE;;
*': command') style=$ZLE_COMMAND_STYLE;;
*)
if _check_path; then
style=$ZLE_PATH_STYLE
else
style=$ZLE_COMMAND_UNKNOWN_TOKEN_STYLE
fi
;;
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esac
else
case $arg in
'--'*) style=$ZLE_DOUBLE_HYPHEN_CLI_OPTION;;
'-'*) style=$ZLE_HYPHEN_CLI_OPTION;;
"'"*"'") style=$ZLE_SINGLE_QUOTED;;
'"'*'"')
style=$ZLE_DOUBLE_QUOTED
region_highlight+=("$start_pos $end_pos $style")
_hl_string
substr_color=1
;;
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'`'*'`') style=$ZLE_BACK_QUOTED;;
*"*"*) style=$ZLE_GLOBING;;
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*)
style=$ZLE_DEFAULT
_check_path && style=$ZLE_PATH_STYLE
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;;
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esac
fi
[[ $substr_color = 0 ]] && region_highlight+=("$start_pos $end_pos $style")
[[ ${${ZLE_TOKENS_FOLLOWED_BY_COMMANDS[(r)${arg//|/\|}]:-}:+yes} = 'yes' ]] && colorize=true
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start_pos=$end_pos
done
}
# Bind the function to ZLE events.
ZLE_COLORED_FUNCTIONS=(
self-insert
magic-space
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delete-char
backward-delete-char
kill-word
backward-kill-word
up-line-or-history
down-line-or-history
beginning-of-history
end-of-history
undo
redo
yank
)
for f in $ZLE_COLORED_FUNCTIONS; do
eval "$f() { zle .$f && colorize-zle-buffer } ; zle -N $f"
done
# Expand or complete hack
# create an expansion widget which mimics the original "expand-or-complete" (you can see the default setup using "zle -l -L")
zle -C orig-expand-or-complete .expand-or-complete _main_complete
# use the orig-expand-or-complete inside the colorize function (for some reason, using the ".expand-or-complete" widget doesn't work the same)
expand-or-complete() { builtin zle orig-expand-or-complete && colorize-zle-buffer }
zle -N expand-or-complete