Big refactoring.

* Don't override user defined styles
* Better modularisation of highlighters
* Allow to define which highlighters are activated
* Allow to define the order in which they are defined
* Minor performance optimizations
* Fixed some variables leak
* Improve documentation
* Brackets highlighter: use ZSH_HIGHLIGHT_STYLES instead of a specific array
This commit is contained in:
Julien Nicoulaud 2011-06-12 22:57:14 +02:00
parent 19f16752bb
commit 0772ddd346
17 changed files with 540 additions and 328 deletions

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@ -1,73 +1,47 @@
zsh-syntax-highlighting ![Project status](http://stillmaintained.com/nicoulaj/zsh-syntax-highlighting.png)
==========================================================================================================
zsh-syntax-highlighting
=======================
**[Fish shell](http://www.fishshell.com) like syntax highlighting for [Zsh](http://www.zsh.org).**
*Requirements: zsh 4.3.9 or superior.*
*Requirements: zsh 4.3.9+.*
## Try it
Here is a one-liner to try it without installing or modifying anything:
wget --no-check-certificate --output-document=/tmp/zsh-syntax-highlighting.zsh https://github.com/nicoulaj/zsh-syntax-highlighting/raw/master/zsh-syntax-highlighting.zsh && . /tmp/zsh-syntax-highlighting.zsh
## Install it
How to install
--------------
### In your ~/.zshrc
* Download the script or clone this repository:
git clone git://github.com/nicoulaj/zsh-syntax-highlighting.git
git clone git://github.com/nicoulaj/zsh-syntax-highlighting.git
* Source the script **at the end** of `~/.zshrc`:
source /path/to/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
source /path/to/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
* Source `~/.zshrc` to take changes into account:
source ~/.zshrc
source ~/.zshrc
### With oh-my-zsh
* Download the script or clone this repository in [oh-my-zsh](http://github.com/robbyrussell/oh-my-zsh) plugins directory:
cd ~/.oh-my-zsh/plugins/
git clone git://github.com/nicoulaj/zsh-syntax-highlighting.git
cd ~/.oh-my-zsh/plugins/
git clone git://github.com/nicoulaj/zsh-syntax-highlighting.git
* Activate the plugin in `~/.zshrc` (in **last** position):
plugins=( [plugins...] zsh-syntax-highlighting)
plugins=( [plugins...] zsh-syntax-highlighting)
* Source `~/.zshrc` to take changes into account:
source ~/.zshrc
source ~/.zshrc
## Tweak it
How to tweak
------------
Optionally, you can override the default styles used for highlighting. The styles are declared in the `ZSH_HIGHLIGHT_STYLES` array. You can override styles this way:
# To differentiate aliases from other command types
ZSH_HIGHLIGHT_STYLES[alias]='fg=magenta,bold'
# To have paths colored instead of underlined
ZSH_HIGHLIGHT_STYLES[path]='fg=cyan'
# To disable highlighting of globbing expressions
ZSH_HIGHLIGHT_STYLES[globbing]='none'
You can tweak the styles used to colorize matching brackets by overriding the `ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES`.
ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES=(
'fg=blue,bold' # Style for first level of imbrication
'fg=green,bold' # Style for second level of imbrication
'fg=magenta,bold' # etc... Put as many styles as you wish, or leave
'fg=yellow,bold' # empty to disable brackets matching.
'fg=cyan,bold'
)
This must be done **after** the script is sourced, otherwise your styles will be overwritten. The syntax for declaring styles is [documented here](http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#SEC135).
Syntax highlighting is done by pluggable highlighter scripts, see the [highlighters directory](highlighters)
for documentation and configuration settings.

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highlighters/README.md Normal file
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zsh-syntax-highlighting / highlighters
======================================
Syntax highlighting is done by pluggable highlighters:
* [***main***](main) - the base highlighter, and the only one active by default.
* [***brackets***](brackets) - matches brackets and parenthesis.
* [***pattern***](pattern) - matches user-defined patterns.
How to activate highlighters
----------------------------
To activate an highlighter, add it to the `ZSH_HIGHLIGHT_HIGHLIGHTERS` array in `~/.zshrc`, for example:
ZSH_HIGHLIGHT_HIGHLIGHTERS=(main brackets pattern)
How to tweak highlighters
-------------------------
Highlighters look up styles from the `ZSH_HIGHLIGHT_STYLES` array. Navigate into each highlighter directory to see what styles it defines and how to configure it.
How to implement a new highlighter
----------------------------------
To create your own ***myhighlighter*** highlighter:
* Create your script at **highlighters/*myhighlighter*/*myhighlighter*-highlighter.zsh**.
* Implement the `_zsh_highlight_myhighlighter_highlighter_predicate` function. This function must return 0 when the highlighter needs to be called, for example:
_zsh_highlight_myhighlighter_highlighter_predicate() {
# Call this highlighter in SVN repositories
[[ -d .svn ]]
}
* Implement the `_zsh_highlight_myhighlighter_highlighter` function. This function does the actual syntax highlighting, by modifying `region_highlight`, for example:
_zsh_highlight_myhighlighter_highlighter() {
# Colorize the whole buffer with blue background
region_highlight+=(0 $#BUFFER bg=blue)
}
* Activate your highlighter in `~/.zshrc`:
ZSH_HIGHLIGHT_HIGHLIGHTERS+=(myhighlighter)

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zsh-syntax-highlighting / highlighters / brackets
=================================================
This is the ***brackets*** highlighter, that highlights brackets, parenthesis and matches them.
How to activate it
------------------
To activate it, add it to `ZSH_HIGHLIGHT_HIGHLIGHTERS`:
ZSH_HIGHLIGHT_HIGHLIGHTERS=( [...] brackets)
How to tweak it
---------------
This highlighter defines the following styles:
* `bracket-error` - unmatched brackets
* `bracket-level-N` - brackets with nest level N
To override one of those styles, change its entry in `ZSH_HIGHLIGHT_STYLES`, for example in `~/.zshrc`:
# To define styles for nested brackets up to level 4
ZSH_HIGHLIGHT_STYLES[bracket-level-1]='fg=blue,bold'
ZSH_HIGHLIGHT_STYLES[bracket-level-2]='fg=red,bold'
ZSH_HIGHLIGHT_STYLES[bracket-level-3]='fg=yellow,bold'
ZSH_HIGHLIGHT_STYLES[bracket-level-4]='fg=magenta,bold'
The syntax for declaring styles is [documented here](http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#SEC135).

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@ -29,29 +29,24 @@
# -------------------------------------------------------------------------------------------------
ZSH_HIGHLIGHT_STYLES+=(
bracket-error 'fg=red,bold'
)
# Define default styles.
: ${ZSH_HIGHLIGHT_STYLES[bracket-error]:=fg=red,bold}
: ${ZSH_HIGHLIGHT_STYLES[bracket-level-1]:=fg=blue,bold}
: ${ZSH_HIGHLIGHT_STYLES[bracket-level-2]:=fg=green,bold}
: ${ZSH_HIGHLIGHT_STYLES[bracket-level-3]:=fg=magenta,bold}
: ${ZSH_HIGHLIGHT_STYLES[bracket-level-4]:=fg=yellow,bold}
: ${ZSH_HIGHLIGHT_STYLES[bracket-level-5]:=fg=cyan,bold}
# Colors for bracket levels.
# Put as many color as you wish.
# Leave it as an empty array to disable.
ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES=(
'fg=blue,bold'
'fg=green,bold'
'fg=magenta,bold'
'fg=yellow,bold'
'fg=cyan,bold'
)
# Whether the bracket match highlighting shound be called or not.
_zsh_highlight_bracket-match-p() {
_zsh_highlight_cursor-moved-p || _zsh_highlight_buffer-modified-p
# Whether the brackets highlighter should be called or not.
_zsh_highlight_brackets_highlighter_predicate()
{
_zsh_highlight_cursor_moved || _zsh_highlight_buffer_modified
}
# Bracket match highlighting.
_zsh_highlight_bracket-match() {
bracket_color_size=${#ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES}
# Brackets highlighting function.
_zsh_highlight_brackets_highlighter()
{
bracket_color_size=${#ZSH_HIGHLIGHT_STYLES[(I)bracket-level-*]}
if ((bracket_color_size > 0)); then
typeset -A levelpos lastoflevel matching revmatching
((level = 0))
@ -73,7 +68,7 @@ _zsh_highlight_bracket-match() {
if ((level < 1)); then
region_highlight+=("$((pos - 1)) $pos "$ZSH_HIGHLIGHT_STYLES[bracket-error])
else
region_highlight+=("$((pos - 1)) $pos "$ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES[(( (level - 1) % bracket_color_size + 1 ))])
region_highlight+=("$((pos - 1)) $pos "$ZSH_HIGHLIGHT_STYLES[bracket-level-$(( (level - 1) % bracket_color_size + 1 ))])
fi
done
((c = CURSOR + 1))
@ -85,5 +80,3 @@ _zsh_highlight_bracket-match() {
fi
fi
}
_zsh_highlight_add-highlighter _zsh_highlight_bracket-match

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zsh-syntax-highlighting / highlighters / main
=============================================
This is the ***main*** highlighter, that highlights:
* Commands
* Options
* Arguments
* Paths
* Strings
How to activate it
------------------
To activate it, add it to `ZSH_HIGHLIGHT_HIGHLIGHTERS`:
ZSH_HIGHLIGHT_HIGHLIGHTERS=( [...] main)
This highlighter is active by default.
How to tweak it
---------------
This highlighter defines the following styles:
* `unknown-token` - unknown tokens / errors
* `reserved-word` - shell reserved words
* `alias` - aliases
* `builtin` - shell builtin commands
* `function` - functions
* `command` - commands
* `hashed-command` - hashed commands
* `path` - paths
* `globbing` - globbing expressions
* `history-expansion` - history expansion expressions
* `single-hyphen-option` - single hyphen options
* `double-hyphen-option` - double hyphen options
* `back-quoted-argument` - backquoted expressions
* `single-quoted-argument` - single quoted arguments
* `double-quoted-argument` - double quoted arguments
* `dollar-double-quoted-argument` - dollar double quoted arguments
* `back-double-quoted-argument` - back double quoted arguments
* `assign` - variable assignments
* `default` - parts of the buffer that do not match anything
To override one of those styles, change its entry in `ZSH_HIGHLIGHT_STYLES`, for example in `~/.zshrc`:
# To differentiate aliases from other command types
ZSH_HIGHLIGHT_STYLES[alias]='fg=magenta,bold'
# To have paths colored instead of underlined
ZSH_HIGHLIGHT_STYLES[path]='fg=cyan'
# To disable highlighting of globbing expressions
ZSH_HIGHLIGHT_STYLES[globbing]='none'
The syntax for declaring styles is [documented here](http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#SEC135).

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#!/usr/bin/env zsh
# -------------------------------------------------------------------------------------------------
# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are permitted
# provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this list of conditions
# and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice, this list of
# conditions and the following disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
# may be used to endorse or promote products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# -------------------------------------------------------------------------------------------------
# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
# vim: ft=zsh sw=2 ts=2 et
# -------------------------------------------------------------------------------------------------
# Define default styles.
: ${ZSH_HIGHLIGHT_STYLES[default]:=none}
: ${ZSH_HIGHLIGHT_STYLES[unknown-token]:=fg=red,bold}
: ${ZSH_HIGHLIGHT_STYLES[reserved-word]:=fg=yellow}
: ${ZSH_HIGHLIGHT_STYLES[alias]:=fg=green}
: ${ZSH_HIGHLIGHT_STYLES[builtin]:=fg=green}
: ${ZSH_HIGHLIGHT_STYLES[function]:=fg=green}
: ${ZSH_HIGHLIGHT_STYLES[command]:=fg=green}
: ${ZSH_HIGHLIGHT_STYLES[hashed-command]:=fg=green}
: ${ZSH_HIGHLIGHT_STYLES[path]:=underline}
: ${ZSH_HIGHLIGHT_STYLES[globbing]:=fg=blue}
: ${ZSH_HIGHLIGHT_STYLES[history-expansion]:=fg=blue}
: ${ZSH_HIGHLIGHT_STYLES[single-hyphen-option]:=none}
: ${ZSH_HIGHLIGHT_STYLES[double-hyphen-option]:=none}
: ${ZSH_HIGHLIGHT_STYLES[back-quoted-argument]:=none}
: ${ZSH_HIGHLIGHT_STYLES[single-quoted-argument]:=fg=yellow}
: ${ZSH_HIGHLIGHT_STYLES[double-quoted-argument]:=fg=yellow}
: ${ZSH_HIGHLIGHT_STYLES[dollar-double-quoted-argument]:=fg=cyan}
: ${ZSH_HIGHLIGHT_STYLES[back-double-quoted-argument]:=fg=cyan}
: ${ZSH_HIGHLIGHT_STYLES[assign]:=none}
# Tokens that are always immediately followed by a command.
ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS=(
'|' '||' ';' '&' '&&' 'noglob' 'nocorrect' 'builtin'
)
# Whether the highlighter should be called or not.
_zsh_highlight_main_highlighter_predicate()
{
_zsh_highlight_buffer_modified
}
# Main syntax highlighting function.
_zsh_highlight_main_highlighter()
{
setopt localoptions extendedglob bareglobqual
local start_pos=0 end_pos highlight_glob=true new_expression=true arg style
region_highlight=()
for arg in ${(z)BUFFER}; do
local substr_color=0
[[ $start_pos -eq 0 && $arg = 'noglob' ]] && highlight_glob=false
((start_pos+=${#BUFFER[$start_pos+1,-1]}-${#${BUFFER[$start_pos+1,-1]##[[:space:]]#}}))
((end_pos=$start_pos+${#arg}))
if $new_expression; then
new_expression=false
res=$(LC_ALL=C builtin type -w $arg 2>/dev/null)
case $res in
*': reserved') style=$ZSH_HIGHLIGHT_STYLES[reserved-word];;
*': alias') style=$ZSH_HIGHLIGHT_STYLES[alias]
local aliased_command="${"$(alias $arg)"#*=}"
[[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$aliased_command"} && -z ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$arg"} ]] && ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS+=($arg)
;;
*': builtin') style=$ZSH_HIGHLIGHT_STYLES[builtin];;
*': function') style=$ZSH_HIGHLIGHT_STYLES[function];;
*': command') style=$ZSH_HIGHLIGHT_STYLES[command];;
*': hashed') style=$ZSH_HIGHLIGHT_STYLES[hashed-command];;
*) if _zsh_highlight_main_highlighter_check_assign; then
style=$ZSH_HIGHLIGHT_STYLES[assign]
new_expression=true
elif _zsh_highlight_main_highlighter_check_path; then
style=$ZSH_HIGHLIGHT_STYLES[path]
elif [[ $arg[0,1] = $histchars[0,1] ]]; then
style=$ZSH_HIGHLIGHT_STYLES[history-expansion]
else
style=$ZSH_HIGHLIGHT_STYLES[unknown-token]
fi
;;
esac
else
case $arg in
'--'*) style=$ZSH_HIGHLIGHT_STYLES[double-hyphen-option];;
'-'*) style=$ZSH_HIGHLIGHT_STYLES[single-hyphen-option];;
"'"*"'") style=$ZSH_HIGHLIGHT_STYLES[single-quoted-argument];;
'"'*'"') style=$ZSH_HIGHLIGHT_STYLES[double-quoted-argument]
region_highlight+=("$start_pos $end_pos $style")
_zsh_highlight_main_highlighter_highlight_string
substr_color=1
;;
'`'*'`') style=$ZSH_HIGHLIGHT_STYLES[back-quoted-argument];;
*"*"*) $highlight_glob && style=$ZSH_HIGHLIGHT_STYLES[globbing] || style=$ZSH_HIGHLIGHT_STYLES[default];;
*) if _zsh_highlight_main_highlighter_check_path; then
style=$ZSH_HIGHLIGHT_STYLES[path]
elif [[ $arg[0,1] = $histchars[0,1] ]]; then
style=$ZSH_HIGHLIGHT_STYLES[history-expansion]
else
style=$ZSH_HIGHLIGHT_STYLES[default]
fi
;;
esac
fi
[[ $substr_color = 0 ]] && region_highlight+=("$start_pos $end_pos $style")
[[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$arg"} ]] && new_expression=true
start_pos=$end_pos
done
}
# Check if the argument is variable assignment
_zsh_highlight_main_highlighter_check_assign()
{
setopt localoptions extended_glob
[[ ${(Q)arg} == [[:alpha:]_]([[:alnum:]_])#=* ]]
}
# Check if the argument is a path.
_zsh_highlight_main_highlighter_check_path()
{
[[ -z ${(Q)arg} ]] && return 1
[[ -e ${(Q)arg} ]] && return 0
[[ ! -e ${(Q)arg:h} ]] && return 1
[[ ${#BUFFER} == $end_pos && -n $(print ${(Q)arg}*(N)) ]] && return 0
return 1
}
# Highlight special chars inside double-quoted strings
_zsh_highlight_main_highlighter_highlight_string()
{
setopt localoptions noksharrays
local i j k style
# Starting quote is at 1, so start parsing at offset 2 in the string.
for (( i = 2 ; i < end_pos - start_pos ; i += 1 )) ; do
(( j = i + start_pos - 1 ))
(( k = j + 1 ))
case "$arg[$i]" in
'$') style=$ZSH_HIGHLIGHT_STYLES[dollar-double-quoted-argument];;
"\\") style=$ZSH_HIGHLIGHT_STYLES[back-double-quoted-argument]
(( k += 1 )) # Color following char too.
(( i += 1 )) # Skip parsing the escaped char.
;;
*) continue;;
esac
region_highlight+=("$j $k $style")
done
}

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@ -0,0 +1,21 @@
zsh-syntax-highlighting / highlighters / pattern
================================================
This is the ***pattern*** highlighter, that highlights user defined patterns.
How to activate it
------------------
To activate it, add it to `ZSH_HIGHLIGHT_HIGHLIGHTERS`:
ZSH_HIGHLIGHT_HIGHLIGHTERS=( [...] pattern)
How to tweak it
---------------
To use this highlighter, associate patterns with styles in the `ZSH_HIGHLIGHT_PATTERNS` array, for example in `~/.zshrc`:
# To have commands starting with `rm -rf` in red:
ZSH_HIGHLIGHT_PATTERNS+=('rm -rf *' 'fg=white,bold,bg=red')
The syntax for declaring styles is [documented here](http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#SEC135).

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@ -29,35 +29,31 @@
# -------------------------------------------------------------------------------------------------
# A simple keyword highlighting extension for zsh-syntax-highlighting.
# To use this, please do the following steps.
# 1) Source this file after zsh-syntax-highlighting.zsh
# % source zsh-syntax-highlighting.zsh
# % source contrib/keyword.zsh
# 2) Add keyword and color pairs to `ZSH_HIGHLIGHT_KEYWORD_KEYWORDS`.
# % ZSH_HIGHLIGHT_KEYWORD_KEYWORDS+=('rm -rf *' 'fg=white,bold,bg=red')
# 3) Please see the effect.
# % ;# rm -rf /tmp/doesnotexist
# List of keyword and color pairs.
typeset -gA ZSH_HIGHLIGHT_KEYWORD_KEYWORDS
typeset -gA ZSH_HIGHLIGHT_PATTERNS
_zsh_highlight-keyword() {
# Whether the pattern highlighter should be called or not.
_zsh_highlight_pattern_highlighter_predicate()
{
_zsh_highlight_buffer_modified
}
# Pattern syntax highlighting function.
_zsh_highlight_pattern_highlighter()
{
setopt localoptions extendedglob
for pattern in ${(k)ZSH_HIGHLIGHT_KEYWORD_KEYWORDS}; do
_zsh_highlight-keyword-loop "$BUFFER" "$pattern"
for pattern in ${(k)ZSH_HIGHLIGHT_PATTERNS}; do
_zsh_highlight_pattern_highlighter_loop "$BUFFER" "$pattern"
done
}
_zsh_highlight-keyword-loop() {
_zsh_highlight_pattern_highlighter_loop()
{
# This does *not* do its job syntactically, sorry.
local buf="$1" pat="$2"
local -a match mbegin mend
if [[ "$buf" == (#b)(*)(${~pat})* ]]; then
region_highlight+=("$((mbegin[2] - 1)) $mend[2] $ZSH_HIGHLIGHT_KEYWORD_KEYWORDS[$pat]")
region_highlight+=("$((mbegin[2] - 1)) $mend[2] $ZSH_HIGHLIGHT_PATTERNS[$pat]")
"$0" "$match[1]" "$pat"; return $?
fi
}
_zsh_highlight_add-highlighter _zsh_highlight-keyword _zsh_highlight_buffer-modified-p

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@ -0,0 +1,20 @@
zsh-syntax-highlighting / tests
===============================
Utility scripts for testing zsh-syntax-highlighting highlighters.
The tests expect the highlighter directory to contain a `test-data` directory with test data files. See the [main highlighter](../highlighters/main/test-data) for examples.
highlighting test
-----------------
[`test-highlighting.zsh`](test-highlighting.zsh) tests the correctness of the highlighting. Usage:
zsh test-highlighting.zsh <HIGHLIGHTER NAME>
performance test
----------------
[`test-perfs.zsh`](test-highlighting.zsh) measures the time spent doing the highlighting. Usage:
zsh test-perfs.zsh <HIGHLIGHTER NAME>

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@ -29,14 +29,35 @@
# -------------------------------------------------------------------------------------------------
# Check an highlighter was given as argument.
[[ -n "$1" ]] || {
echo "You must provide the name of a valid highlighter as argument." >&2
exit 1
}
# Check the highlighter is valid.
[[ -f ${0:h:h}/highlighters/$1/$1-highlighter.zsh ]] || {
echo "Could not find highlighter '$1'." >&2
exit 1
}
# Check the highlighter has test data.
[[ -d ${0:h:h}/highlighters/$1/test-data ]] || {
echo "Highlighter '$1' has no test data." >&2
exit 1
}
local -a errors highlight_zone
local -A observed_result
# Load the main script.
. $(dirname $0)/../zsh-syntax-highlighting.zsh
. ${0:h:h}/zsh-syntax-highlighting.zsh
# Process each test data file in data/.
for data_file in $(dirname $0)/data/*.zsh; do
# Activate the highlighter.
ZSH_HIGHLIGHT_HIGHLIGHTERS=($1)
# Process each test data file in test data directory.
for data_file in ${0:h:h}/highlighters/$1/test-data/*; do
# Load the data and prepare checking it.
BUFFER= ; expected_region_highlight=(); errors=()
@ -55,7 +76,7 @@ for data_file in $(dirname $0)/data/*.zsh; do
# Process the data.
region_highlight=()
_zsh_highlight-zle-buffer
_zsh_highlight
# Overlapping regions can be declared in region_highlight, so we first build an array of the
# observed highlighting.

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@ -29,11 +29,32 @@
# -------------------------------------------------------------------------------------------------
# Load the main script.
. $(dirname $0)/../zsh-syntax-highlighting.zsh
# Check an highlighter was given as argument.
[[ -n "$1" ]] || {
echo "You must provide the name of a valid highlighter as argument." >&2
exit 1
}
# Process each test data file in data/.
for data_file in $(dirname $0)/data/*.zsh; do
# Check the highlighter is valid.
[[ -f ${0:h:h}/highlighters/$1/$1-highlighter.zsh ]] || {
echo "Could not find highlighter '$1'." >&2
exit 1
}
# Check the highlighter has test data.
[[ -d ${0:h:h}/highlighters/$1/test-data ]] || {
echo "Highlighter '$1' has no test data." >&2
exit 1
}
# Load the main script.
. ${0:h:h}/zsh-syntax-highlighting.zsh
# Activate the highlighter.
ZSH_HIGHLIGHT_HIGHLIGHTERS=($1)
# Process each test data file in test data directory.
for data_file in ${0:h:h}/highlighters/$1/test-data/*; do
# Load the data and prepare checking it.
BUFFER=
@ -45,9 +66,9 @@ for data_file in $(dirname $0)/data/*.zsh; do
echo "KO\n - 'BUFFER' is not declared or blank."
else
# Measure the time taken by _zsh_highlight-zle-buffer.
# Measure the time taken by _zsh_highlight.
TIMEFMT="%*Es"
time ( BUFFER="$BUFFER" && _zsh_highlight-zle-buffer)
time ( BUFFER="$BUFFER" && _zsh_highlight)
fi

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@ -33,255 +33,81 @@
# Core highlighting update system
# -------------------------------------------------------------------------------------------------
# Array used by highlighters to declare overridable styles.
typeset -gA ZSH_HIGHLIGHT_STYLES
# Array declaring active highlighters names.
typeset -ga ZSH_HIGHLIGHT_HIGHLIGHTERS
# An `object' implemented by below 3 arrays' elements could be called a
# `highlighter', registered by `_zsh_highlight_add-highlighter`. In other words, these
# arrays are indexed and tied by their own functionality. If they have been
# arranged inconsistently, things goes wrong.
# Please see `_zsh_highlight-zle-buffer` and `_zsh_highlight_add-highlighter`.
# Actual recolorize functions to be called.
typeset -a zsh_highlight_functions; zsh_highlight_functions=()
# Predicate functions whether its recolorize function should be called or not.
typeset -a zsh_highlight_predicates; zsh_highlight_predicates=()
# Highlight storages for each recolorize functions.
typeset -a zsh_highlight_caches; zsh_highlight_caches=()
_zsh_highlight-zle-buffer() {
# Update ZLE buffer syntax highlighting.
#
# Invokes each highlighter that needs updating.
# This function is supposed to be called whenever the ZLE state changes.
_zsh_highlight()
{
# Store the previous command return code to restore it whatever happens.
local ret=$?
# Do not highlight if there are pending inputs (copy/paste).
[[ $PENDING -gt 0 ]] && return $ret
{
local -a funinds
local -i rh_size=$#region_highlight
for i in {1..${#zsh_highlight_functions}}; do
local pred=${zsh_highlight_predicates[i]} cache_place=${zsh_highlight_caches[i]}
if _zsh_highlight-zle-buffer-p "$rh_size" "$pred"; then
if ((${#${(P)cache_place}} > 0)); then
region_highlight=(${region_highlight:#(${(P~j.|.)cache_place})})
local -a empty; empty=(); : ${(PA)cache_place::=$empty}
fi
funinds+=$i
local -a selected_highlighters
local cache_place
# Select which highlighters in ZSH_HIGHLIGHT_HIGHLIGHTERS need to be invoked.
local highlighter; for highlighter in $ZSH_HIGHLIGHT_HIGHLIGHTERS; do
# If highlighter needs to be invoked
if "_zsh_highlight_${highlighter}_highlighter_predicate"; then
# Mark the highlighter as selected for update.
selected_highlighters+=($highlighter)
# Remove what was stored in its cache from region_highlight.
cache_place="_zsh_highlight_${highlighter}_highlighter_cache"
[[ ${#${(P)cache_place}} -gt 0 ]] && region_highlight=(${region_highlight:#(${(P~j.|.)cache_place})})
fi
done
for i in $funinds; do
local func=${zsh_highlight_functions[i]} cache_place=${zsh_highlight_caches[i]}
local -a rh; rh=($region_highlight)
# Invoke each selected highlighter and store the result in its cache.
local -a region_highlight_copy
for highlighter in $selected_highlighters; do
cache_place="_zsh_highlight_${highlighter}_highlighter_cache"
region_highlight_copy=($region_highlight)
{
"$func"
"_zsh_highlight_${highlighter}_highlighter"
} always {
: ${(PA)cache_place::=${region_highlight:#(${(~j.|.)rh})}}
: ${(PA)cache_place::=${region_highlight:#(${(~j.|.)region_highlight_copy})}}
}
done
} always {
ZSH_PRIOR_CURSOR=$CURSOR
ZSH_PRIOR_HIGHLIGHTED_BUFFER=$BUFFER
_ZSH_HIGHLIGHT_PRIOR_BUFFER=$BUFFER
_ZSH_HIGHLIGHT_PRIOR_CURSOR=$CURSOR
return $ret
}
}
# Whether supplied highlight_predicate satisfies or not.
_zsh_highlight-zle-buffer-p() {
local region_highlight_size="$1" highlight_predicate="$2"
# If any highlightings are not taken into account, asume it is needed.
# This holds for some up/down-history commands, for example.
((region_highlight_size == 0)) || "$highlight_predicate"
}
# Whether the command line buffer is modified or not.
_zsh_highlight_buffer-modified-p() {
[[ ${ZSH_PRIOR_HIGHLIGHTED_BUFFER:-} != $BUFFER ]]
}
# Whether the cursor is moved or not.
_zsh_highlight_cursor-moved-p() {
((ZSH_PRIOR_CURSOR != $CURSOR))
}
# Register an highlighter.
_zsh_highlight_add-highlighter() {
zsh_highlight_functions+="$1"
zsh_highlight_predicates+="${2-${1}-p}"
zsh_highlight_caches+="${3-${1//-/_}}"
}
# -------------------------------------------------------------------------------------------------
# Main highlighter
# API/utility functions for highlighters
# -------------------------------------------------------------------------------------------------
ZSH_HIGHLIGHT_STYLES+=(
default 'none'
unknown-token 'fg=red,bold'
reserved-word 'fg=yellow'
alias 'fg=green'
builtin 'fg=green'
function 'fg=green'
command 'fg=green'
hashed-command 'fg=green'
path 'underline'
globbing 'fg=blue'
history-expansion 'fg=blue'
single-hyphen-option 'none'
double-hyphen-option 'none'
back-quoted-argument 'none'
single-quoted-argument 'fg=yellow'
double-quoted-argument 'fg=yellow'
dollar-double-quoted-argument 'fg=cyan'
back-double-quoted-argument 'fg=cyan'
assign 'none'
)
# Array used by highlighters to declare user overridable styles.
typeset -gA ZSH_HIGHLIGHT_STYLES
# Tokens that are always immediately followed by a command.
ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS=(
'|' '||' ';' '&' '&&' 'noglob' 'nocorrect' 'builtin'
)
# Check if the argument is variable assignment
_zsh_highlight_check-assign() {
setopt localoptions extended_glob
[[ ${(Q)arg} == [[:alpha:]_]([[:alnum:]_])#=* ]]
# Whether the command line buffer has been modified or not.
#
# Returns 0 if the buffer has changed since _zsh_highlight was last called.
_zsh_highlight_buffer_modified()
{
[[ ${_ZSH_HIGHLIGHT_PRIOR_BUFFER:-} != $BUFFER ]]
}
# Check if the argument is a path.
_zsh_highlight_check-path() {
[[ -z ${(Q)arg} ]] && return 1
[[ -e ${(Q)arg} ]] && return 0
[[ ! -e ${(Q)arg:h} ]] && return 1
[[ ${#BUFFER} == $end_pos && -n $(print ${(Q)arg}*(N)) ]] && return 0
return 1
}
# Highlight special chars inside double-quoted strings
_zsh_highlight_highlight_string() {
setopt localoptions noksharrays
local i j k style
# Starting quote is at 1, so start parsing at offset 2 in the string.
for (( i = 2 ; i < end_pos - start_pos ; i += 1 )) ; do
(( j = i + start_pos - 1 ))
(( k = j + 1 ))
case "$arg[$i]" in
'$') style=$ZSH_HIGHLIGHT_STYLES[dollar-double-quoted-argument];;
"\\") style=$ZSH_HIGHLIGHT_STYLES[back-double-quoted-argument]
(( k += 1 )) # Color following char too.
(( i += 1 )) # Skip parsing the escaped char.
;;
*) continue;;
esac
region_highlight+=("$j $k $style")
done
}
# Core syntax highlighting.
_zsh_main-highlight() {
setopt localoptions extendedglob bareglobqual
local start_pos=0 end_pos highlight_glob=true new_expression=true arg style
region_highlight=()
for arg in ${(z)BUFFER}; do
local substr_color=0
[[ $start_pos -eq 0 && $arg = 'noglob' ]] && highlight_glob=false
((start_pos+=${#BUFFER[$start_pos+1,-1]}-${#${BUFFER[$start_pos+1,-1]##[[:space:]]#}}))
((end_pos=$start_pos+${#arg}))
if $new_expression; then
new_expression=false
res=$(LC_ALL=C builtin type -w $arg 2>/dev/null)
case $res in
*': reserved') style=$ZSH_HIGHLIGHT_STYLES[reserved-word];;
*': alias') style=$ZSH_HIGHLIGHT_STYLES[alias]
local aliased_command="${"$(alias $arg)"#*=}"
[[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$aliased_command"} && -z ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$arg"} ]] && ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS+=($arg)
;;
*': builtin') style=$ZSH_HIGHLIGHT_STYLES[builtin];;
*': function') style=$ZSH_HIGHLIGHT_STYLES[function];;
*': command') style=$ZSH_HIGHLIGHT_STYLES[command];;
*': hashed') style=$ZSH_HIGHLIGHT_STYLES[hashed-command];;
*) if _zsh_highlight_check-assign; then
style=$ZSH_HIGHLIGHT_STYLES[assign]
new_expression=true
elif _zsh_highlight_check-path; then
style=$ZSH_HIGHLIGHT_STYLES[path]
elif [[ $arg[0,1] = $histchars[0,1] ]]; then
style=$ZSH_HIGHLIGHT_STYLES[history-expansion]
else
style=$ZSH_HIGHLIGHT_STYLES[unknown-token]
fi
;;
esac
else
case $arg in
'--'*) style=$ZSH_HIGHLIGHT_STYLES[double-hyphen-option];;
'-'*) style=$ZSH_HIGHLIGHT_STYLES[single-hyphen-option];;
"'"*"'") style=$ZSH_HIGHLIGHT_STYLES[single-quoted-argument];;
'"'*'"') style=$ZSH_HIGHLIGHT_STYLES[double-quoted-argument]
region_highlight+=("$start_pos $end_pos $style")
_zsh_highlight_highlight_string
substr_color=1
;;
'`'*'`') style=$ZSH_HIGHLIGHT_STYLES[back-quoted-argument];;
*"*"*) $highlight_glob && style=$ZSH_HIGHLIGHT_STYLES[globbing] || style=$ZSH_HIGHLIGHT_STYLES[default];;
*) if _zsh_highlight_check-path; then
style=$ZSH_HIGHLIGHT_STYLES[path]
elif [[ $arg[0,1] = $histchars[0,1] ]]; then
style=$ZSH_HIGHLIGHT_STYLES[history-expansion]
else
style=$ZSH_HIGHLIGHT_STYLES[default]
fi
;;
esac
fi
[[ $substr_color = 0 ]] && region_highlight+=("$start_pos $end_pos $style")
[[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$arg"} ]] && new_expression=true
start_pos=$end_pos
done
}
# -------------------------------------------------------------------------------------------------
# Setup functions
# -------------------------------------------------------------------------------------------------
# Intercept specified ZLE events to have highlighting triggered.
_zsh_highlight_bind-events() {
# Resolve event names what have to be bound to.
zmodload zsh/zleparameter 2>/dev/null || {
echo 'zsh-syntax-highlighting:zmodload error. exiting.' >&2
return -1
}
local -a events; : ${(A)events::=${@:#(_*|orig-*|.run-help|.which-command)}}
# Bind the events to _zsh_highlight-zle-buffer.
local clean_event
for event in $events; do
if [[ "$widgets[$event]" == completion:* ]]; then
eval "zle -C orig-$event ${${${widgets[$event]}#*:}/:/ } ; $event() { builtin zle orig-$event && _zsh_highlight-zle-buffer } ; zle -N $event"
else
case $event in
accept-and-menu-complete)
eval "$event() { builtin zle .$event && _zsh_highlight-zle-buffer } ; zle -N $event"
;;
.*)
clean_event=$event[2,${#event}] # Remove the leading dot in the event name
case ${widgets[$clean_event]-} in
(completion|user):*)
;;
*)
eval "$clean_event() { builtin zle $event && _zsh_highlight-zle-buffer } ; zle -N $clean_event"
;;
esac
;;
*)
;;
esac
fi
done
}
# Load highlighters from specified directory if it exists.
_zsh_highlight_load-highlighters() {
[[ -d $1 ]] && for highlighter_def ($1/*.zsh) . $highlighter_def
# Whether the cursor has moved or not.
#
# Returns 0 if the cursor has moved since _zsh_highlight was last called.
_zsh_highlight_cursor_moved()
{
((_ZSH_HIGHLIGHT_PRIOR_CURSOR != $CURSOR))
}
@ -289,11 +115,57 @@ _zsh_highlight_load-highlighters() {
# Setup
# -------------------------------------------------------------------------------------------------
# Bind highlighting to all known events.
_zsh_highlight_bind-events "${(@f)"$(zle -la)"}"
# Load ZSH module zsh/zleparameter, needed to override user defined widgets.
zmodload zsh/zleparameter 2>/dev/null || {
echo 'zsh-syntax-highlighting: failed loading zsh/zleparameter, exiting.' >&2
return -1
}
# Register the main highlighter.
_zsh_highlight_add-highlighter _zsh_main-highlight _zsh_highlight_buffer-modified-p
# Resolve highlighters directory location.
highlighters_dir="${ZSH_HIGHLIGHT_HIGHLIGHTERS_DIR:-${${(%):-%N}:A:h}/highlighters}"
[[ -d $highlighters_dir ]] || {
echo "zsh-syntax-highlighting: highlighters directory '$highlighters_dir' not found, exiting." >&2
return -1
}
# Load additional highlighters if available.
_zsh_highlight_load-highlighters "${${(%):-%N}:h}/highlighters"
# Override ZLE widgets to make them invoke _zsh_highlight.
for event in ${${(f)"$(zle -la)"}:#(_*|orig-*|.run-help|.which-command)}; do
if [[ "$widgets[$event]" == completion:* ]]; then
eval "zle -C orig-$event ${${${widgets[$event]}#*:}/:/ } ; $event() { builtin zle orig-$event && _zsh_highlight } ; zle -N $event"
else
case $event in
accept-and-menu-complete)
eval "$event() { builtin zle .$event && _zsh_highlight } ; zle -N $event"
;;
.*)
clean_event=$event[2,${#event}] # Remove the leading dot in the event name
case ${widgets[$clean_event]-} in
(completion|user):*)
;;
*)
eval "$clean_event() { builtin zle $event && _zsh_highlight } ; zle -N $clean_event"
;;
esac
;;
*)
;;
esac
fi
done
unset event clean_event
# Load highlighters from highlighters directory and check they define required functions.
for highlighter_dir ($highlighters_dir/*/); do
highlighter="${highlighter_dir:t}"
[[ -f "$highlighter_dir/${highlighter}-highlighter.zsh" ]] && {
. "$highlighter_dir/${highlighter}-highlighter.zsh"
type "_zsh_highlight_${highlighter}_highlighter" &> /dev/null &&
type "_zsh_highlight_${highlighter}_highlighter_predicate" &> /dev/null || {
echo "zsh-syntax-highlighting: '${highlighter}' highlighter should define both required functions '_zsh_highlight_${highlighter}_highlighter' and '_zsh_highlight_${highlighter}_highlighter_predicate' in '${highlighter_dir}/${highlighter}-highlighter.zsh'." >&2
}
}
done
unset highlighter highlighter_dir highlighters_dir
# Initialize the array of active highlighters if needed.
[[ $#ZSH_HIGHLIGHT_HIGHLIGHTERS -eq 0 ]] && ZSH_HIGHLIGHT_HIGHLIGHTERS=(main)