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
typeset -A ZSH_SYNTAX_HIGHLIGHTING_STYLES
ZSH_SYNTAX_HIGHLIGHTING_STYLES=(
default 'none'
unknown-token 'fg=red,bold'
reserved-word 'fg=yellow,bold'
alias 'fg=green,bold'
builtin 'fg=cyan,bold'
function 'fg=blue,bold'
command 'fg=green,bold'
path 'fg=white,underline'
globbing 'fg=blue,bold'
single-hyphen-option 'fg=yellow'
double-hyphen-option 'fg=yellow'
single-quoted-argument 'fg=yellow'
double-quoted-argument 'fg=yellow'
dollar-double-quoted-argument 'fg=cyan'
back-quoted-argument 'fg=cyan,bold'
back-double-quoted-argument 'fg=magenta'
)
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ZSH_HIGHLIGHT_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 $arg*(N)) ]] && return 0
return 1
}
# hightlight special chars inside double-quoted strings
_hl_string() {
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local i
local j
local k
local c
for (( i = 0 ; i < end_pos - start_pos ; i += 1 )) ; do
(( j = i + start_pos - 1 ))
(( k = j + 1 ))
c="$arg[$i]"
[[ "$c" = '$' ]] && region_highlight+=("$j $k $ZSH_SYNTAX_HIGHLIGHTING_STYLES[dollar-double-quoted-argument]")
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if [[ "$c" = "\\" ]] ; then
(( k = k + 1 ))
region_highlight+=("$j $k $ZSH_SYNTAX_HIGHLIGHTING_STYLES[back-double-quoted-argument]")
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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 $res in
*': reserved') style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[reserved-word];;
*': alias') style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[alias];;
*': builtin') style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[builtin];;
*': function') style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[function];;
*': command') style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[command];;
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*)
if _check_path; then
style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[path]
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else
style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[unknown-token]
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fi
;;
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esac
else
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case $arg in
'--'*) style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[double-hyphen-option];;
'-'*) style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[single-hyphen-option];;
"'"*"'") style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[single-quoted-argument];;
'"'*'"') style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[double-quoted-argument]
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region_highlight+=("$start_pos $end_pos $style")
_hl_string
substr_color=1
;;
'`'*'`') style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[back-quoted-argument];;
*"*"*) style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[globbing];;
*) style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[default]
_check_path && style=$ZSH_SYNTAX_HIGHLIGHTING_STYLES[path]
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;;
esac
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fi
[[ $substr_color = 0 ]] && region_highlight+=("$start_pos $end_pos $style")
[[ ${${ZSH_HIGHLIGHT_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.
ZSH_HIGHLIGHT_COLORED_FUNCTIONS=(
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self-insert
magic-space
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
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)
for f in $ZSH_HIGHLIGHT_COLORED_FUNCTIONS; do
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eval "$f() { zle .$f && colorize-zle-buffer } ; zle -N $f"
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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