mirror of
https://github.com/zsh-users/zsh-syntax-highlighting.git
synced 2024-09-19 05:41:15 +02:00
331 lines
12 KiB
Bash
331 lines
12 KiB
Bash
# -------------------------------------------------------------------------------------------------
|
|
# Copyright (c) 2010-2016 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
|
|
# -------------------------------------------------------------------------------------------------
|
|
|
|
|
|
# Set $0 to the expected value, regardless of functionargzero.
|
|
0=${(%):-%N}
|
|
if true; then
|
|
# $0 is reliable
|
|
ZSH_HIGHLIGHT_VERSION=$(<"${0:A:h}"/.version)
|
|
ZSH_HIGHLIGHT_REVISION=$(<"${0:A:h}"/.revision-hash)
|
|
if [[ $ZSH_HIGHLIGHT_REVISION == \$Format:* ]]; then
|
|
# When running from a source tree without 'make install', $ZSH_HIGHLIGHT_REVISION
|
|
# would be set to '$Format:%H$' literally. That's an invalid value, and obtaining
|
|
# the valid value (via `git rev-parse HEAD`, as Makefile does) might be costly, so:
|
|
ZSH_HIGHLIGHT_REVISION=HEAD
|
|
fi
|
|
fi
|
|
|
|
# -------------------------------------------------------------------------------------------------
|
|
# Core highlighting update system
|
|
# -------------------------------------------------------------------------------------------------
|
|
|
|
# Array declaring active highlighters names.
|
|
typeset -ga ZSH_HIGHLIGHT_HIGHLIGHTERS
|
|
|
|
# Update ZLE buffer syntax highlighting.
|
|
#
|
|
# Invokes each highlighter that needs updating.
|
|
# This function is supposed to be called whenever the ZLE state changes.
|
|
_zsh_highlight()
|
|
{
|
|
# Store the previous command return code to restore it whatever happens.
|
|
local ret=$?
|
|
|
|
setopt localoptions warncreateglobal
|
|
setopt localoptions noksharrays
|
|
local REPLY # don't leak $REPLY into global scope
|
|
|
|
# Do not highlight if there are more than 300 chars in the buffer. It's most
|
|
# likely a pasted command or a huge list of files in that case..
|
|
[[ -n ${ZSH_HIGHLIGHT_MAXLENGTH:-} ]] && [[ $#BUFFER -gt $ZSH_HIGHLIGHT_MAXLENGTH ]] && return $ret
|
|
|
|
# Do not highlight if there are pending inputs (copy/paste).
|
|
[[ $PENDING -gt 0 ]] && return $ret
|
|
|
|
# Reset region highlight to build it from scratch
|
|
typeset -ga region_highlight
|
|
region_highlight=();
|
|
|
|
{
|
|
local cache_place
|
|
local -a region_highlight_copy
|
|
|
|
# Select which highlighters in ZSH_HIGHLIGHT_HIGHLIGHTERS need to be invoked.
|
|
local highlighter; for highlighter in $ZSH_HIGHLIGHT_HIGHLIGHTERS; do
|
|
|
|
# eval cache place for current highlighter and prepare it
|
|
cache_place="_zsh_highlight_${highlighter}_highlighter_cache"
|
|
typeset -ga ${cache_place}
|
|
|
|
# If highlighter needs to be invoked
|
|
if "_zsh_highlight_${highlighter}_highlighter_predicate"; then
|
|
|
|
# save a copy, and cleanup region_highlight
|
|
region_highlight_copy=("${region_highlight[@]}")
|
|
region_highlight=()
|
|
|
|
# Execute highlighter and save result
|
|
{
|
|
"_zsh_highlight_${highlighter}_highlighter"
|
|
} always {
|
|
eval "${cache_place}=(\"\${region_highlight[@]}\")"
|
|
}
|
|
|
|
# Restore saved region_highlight
|
|
region_highlight=("${region_highlight_copy[@]}")
|
|
|
|
fi
|
|
|
|
# Use value form cache if any cached
|
|
eval "region_highlight+=(\"\${${cache_place}[@]}\")"
|
|
|
|
done
|
|
|
|
# Re-apply zle_highlight settings
|
|
|
|
# region
|
|
(( REGION_ACTIVE )) && _zsh_highlight_apply_zle_highlight region standout "$MARK" "$CURSOR"
|
|
|
|
# yank / paste (zsh-5.1.1 and newer)
|
|
(( $+YANK_ACTIVE )) && (( YANK_ACTIVE )) && _zsh_highlight_apply_zle_highlight paste standout "$YANK_START" "$YANK_END"
|
|
|
|
# isearch
|
|
(( $+ISEARCHMATCH_ACTIVE )) && (( ISEARCHMATCH_ACTIVE )) && _zsh_highlight_apply_zle_highlight isearch underline "$ISEARCHMATCH_START" "$ISEARCHMATCH_END"
|
|
|
|
# suffix
|
|
(( $+SUFFIX_ACTIVE )) && (( SUFFIX_ACTIVE )) && _zsh_highlight_apply_zle_highlight suffix bold "$SUFFIX_START" "$SUFFIX_END"
|
|
|
|
|
|
return $ret
|
|
|
|
|
|
} always {
|
|
typeset -g _ZSH_HIGHLIGHT_PRIOR_BUFFER="$BUFFER"
|
|
typeset -gi _ZSH_HIGHLIGHT_PRIOR_CURSOR=$CURSOR
|
|
}
|
|
}
|
|
|
|
# Apply highlighting based on entries in the zle_highlight array.
|
|
# This function takes four arguments:
|
|
# 1. The exact entry (no patterns) in the zle_highlight array:
|
|
# region, paste, isearch, or suffix
|
|
# 2. The default highlighting that should be applied if the entry is unset
|
|
# 3. and 4. Two integer values describing the beginning and end of the
|
|
# range. The order does not matter.
|
|
_zsh_highlight_apply_zle_highlight() {
|
|
local entry="$1" default="$2"
|
|
integer first="$3" second="$4"
|
|
|
|
# read the relevant entry from zle_highlight
|
|
local region="${zle_highlight[(r)${entry}:*]}"
|
|
|
|
if [[ -z "$region" ]]; then
|
|
# entry not specified at all, use default value
|
|
region=$default
|
|
else
|
|
# strip prefix
|
|
region="${region#${entry}:}"
|
|
|
|
# no highlighting when set to the empty string or to 'none'
|
|
if [[ -z "$region" ]] || [[ "$region" == none ]]; then
|
|
return
|
|
fi
|
|
fi
|
|
|
|
integer start end
|
|
if (( first < second )); then
|
|
start=$first end=$second
|
|
else
|
|
start=$second end=$first
|
|
fi
|
|
region_highlight+=("$start $end $region")
|
|
}
|
|
|
|
|
|
# -------------------------------------------------------------------------------------------------
|
|
# API/utility functions for highlighters
|
|
# -------------------------------------------------------------------------------------------------
|
|
|
|
# Array used by highlighters to declare user overridable styles.
|
|
typeset -gA ZSH_HIGHLIGHT_STYLES
|
|
|
|
# Whether the command line buffer has been modified or not.
|
|
#
|
|
# Returns 0 if the buffer has changed since _zsh_highlight was last called.
|
|
_zsh_highlight_buffer_modified()
|
|
{
|
|
[[ "${_ZSH_HIGHLIGHT_PRIOR_BUFFER:-}" != "$BUFFER" ]]
|
|
}
|
|
|
|
# Whether the cursor has moved or not.
|
|
#
|
|
# Returns 0 if the cursor has moved since _zsh_highlight was last called.
|
|
_zsh_highlight_cursor_moved()
|
|
{
|
|
[[ -n $CURSOR ]] && [[ -n ${_ZSH_HIGHLIGHT_PRIOR_CURSOR-} ]] && (($_ZSH_HIGHLIGHT_PRIOR_CURSOR != $CURSOR))
|
|
}
|
|
|
|
# Add a highlight defined by ZSH_HIGHLIGHT_STYLES.
|
|
#
|
|
# Should be used by all highlighters aside from 'pattern' (cf. ZSH_HIGHLIGHT_PATTERN).
|
|
# Overwritten in tests/test-highlighting.zsh when testing.
|
|
_zsh_highlight_add_highlight()
|
|
{
|
|
local -i start end
|
|
local highlight
|
|
start=$1
|
|
end=$2
|
|
shift 2
|
|
for highlight; do
|
|
if (( $+ZSH_HIGHLIGHT_STYLES[$highlight] )); then
|
|
region_highlight+=("$start $end $ZSH_HIGHLIGHT_STYLES[$highlight]")
|
|
break
|
|
fi
|
|
done
|
|
}
|
|
|
|
# -------------------------------------------------------------------------------------------------
|
|
# Setup functions
|
|
# -------------------------------------------------------------------------------------------------
|
|
|
|
# Helper for _zsh_highlight_bind_widgets
|
|
# $1 is name of widget to call
|
|
_zsh_highlight_call_widget()
|
|
{
|
|
builtin zle "$@" &&
|
|
_zsh_highlight
|
|
}
|
|
|
|
# Rebind all ZLE widgets to make them invoke _zsh_highlights.
|
|
_zsh_highlight_bind_widgets()
|
|
{
|
|
setopt localoptions noksharrays
|
|
|
|
# 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.' >&2
|
|
return 1
|
|
}
|
|
|
|
# Override ZLE widgets to make them invoke _zsh_highlight.
|
|
local cur_widget
|
|
for cur_widget in ${${(k)widgets}:#(.*|orig-*|run-help|which-command|beep|set-local-history|yank)}; do
|
|
case $widgets[$cur_widget] in
|
|
|
|
# Already rebound event: do nothing.
|
|
user:_zsh_highlight_widget_*);;
|
|
|
|
# The "eval"'s are required to make $cur_widget a closure: the value of the parameter at function
|
|
# definition time is used.
|
|
#
|
|
# We can't use ${0/_zsh_highlight_widget_} because these widgets are always invoked with
|
|
# NO_function_argzero, regardless of the option's setting here.
|
|
|
|
# User defined widget: override and rebind old one with prefix "orig-".
|
|
user:*) zle -N orig-$cur_widget ${widgets[$cur_widget]#*:}
|
|
eval "_zsh_highlight_widget_${(q)cur_widget}() { _zsh_highlight_call_widget orig-${(q)cur_widget} -- \"\$@\" }"
|
|
zle -N $cur_widget _zsh_highlight_widget_$cur_widget;;
|
|
|
|
# Completion widget: override and rebind old one with prefix "orig-".
|
|
completion:*) zle -C orig-$cur_widget ${${(s.:.)widgets[$cur_widget]}[2,3]}
|
|
eval "_zsh_highlight_widget_${(q)cur_widget}() { _zsh_highlight_call_widget orig-${(q)cur_widget} -- \"\$@\" }"
|
|
zle -N $cur_widget _zsh_highlight_widget_$cur_widget;;
|
|
|
|
# Builtin widget: override and make it call the builtin ".widget".
|
|
builtin) eval "_zsh_highlight_widget_${(q)cur_widget}() { _zsh_highlight_call_widget .${(q)cur_widget} -- \"\$@\" }"
|
|
zle -N $cur_widget _zsh_highlight_widget_$cur_widget;;
|
|
|
|
# Default: unhandled case.
|
|
*) echo "zsh-syntax-highlighting: unhandled ZLE widget '$cur_widget'" >&2 ;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
# Load highlighters from directory.
|
|
#
|
|
# Arguments:
|
|
# 1) Path to the highlighters directory.
|
|
_zsh_highlight_load_highlighters()
|
|
{
|
|
setopt localoptions noksharrays
|
|
|
|
# Check the directory exists.
|
|
[[ -d "$1" ]] || {
|
|
echo "zsh-syntax-highlighting: highlighters directory '$1' not found." >&2
|
|
return 1
|
|
}
|
|
|
|
# Load highlighters from highlighters directory and check they define required functions.
|
|
local highlighter highlighter_dir
|
|
for highlighter_dir ($1/*/); do
|
|
highlighter="${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}/${highlighter}-highlighter.zsh'." >&2
|
|
}
|
|
}
|
|
done
|
|
}
|
|
|
|
|
|
# -------------------------------------------------------------------------------------------------
|
|
# Setup
|
|
# -------------------------------------------------------------------------------------------------
|
|
|
|
# Try binding widgets.
|
|
_zsh_highlight_bind_widgets || {
|
|
echo 'zsh-syntax-highlighting: failed binding ZLE widgets, exiting.' >&2
|
|
return 1
|
|
}
|
|
|
|
# Resolve highlighters directory location.
|
|
_zsh_highlight_load_highlighters "${ZSH_HIGHLIGHT_HIGHLIGHTERS_DIR:-${${0:A}:h}/highlighters}" || {
|
|
echo 'zsh-syntax-highlighting: failed loading highlighters, exiting.' >&2
|
|
return 1
|
|
}
|
|
|
|
# Reset scratch variables when commandline is done.
|
|
_zsh_highlight_preexec_hook()
|
|
{
|
|
typeset -g _ZSH_HIGHLIGHT_PRIOR_BUFFER=
|
|
typeset -gi _ZSH_HIGHLIGHT_PRIOR_CURSOR=
|
|
}
|
|
autoload -U add-zsh-hook
|
|
add-zsh-hook preexec _zsh_highlight_preexec_hook 2>/dev/null || {
|
|
echo 'zsh-syntax-highlighting: failed loading add-zsh-hook.' >&2
|
|
}
|
|
|
|
# Load zsh/parameter module if available
|
|
zmodload zsh/parameter 2>/dev/null || true
|
|
|
|
# Initialize the array of active highlighters if needed.
|
|
[[ $#ZSH_HIGHLIGHT_HIGHLIGHTERS -eq 0 ]] && ZSH_HIGHLIGHT_HIGHLIGHTERS=(main) || true
|