112 lines
4.6 KiB
Bash
112 lines
4.6 KiB
Bash
#!/usr/bin/env zsh
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# -------------------------------------------------------------------------------------------------
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# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification, are permitted
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# provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice, this list of conditions
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# and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice, this list of
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# conditions and the following disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
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# may be used to endorse or promote products derived from this software without specific prior
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# written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# -------------------------------------------------------------------------------------------------
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# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
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# vim: ft=zsh sw=2 ts=2 et
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# -------------------------------------------------------------------------------------------------
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# Define default styles.
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: ${ZSH_HIGHLIGHT_STYLES[bracket-error]:=fg=red,bold}
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: ${ZSH_HIGHLIGHT_STYLES[bracket-level-1]:=fg=blue,bold}
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: ${ZSH_HIGHLIGHT_STYLES[bracket-level-2]:=fg=green,bold}
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: ${ZSH_HIGHLIGHT_STYLES[bracket-level-3]:=fg=magenta,bold}
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: ${ZSH_HIGHLIGHT_STYLES[bracket-level-4]:=fg=yellow,bold}
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: ${ZSH_HIGHLIGHT_STYLES[bracket-level-5]:=fg=cyan,bold}
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: ${ZSH_HIGHLIGHT_STYLES[cursor-matchingbracket]:=standout}
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# Whether the brackets highlighter should be called or not.
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_zsh_highlight_brackets_highlighter_predicate()
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{
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_zsh_highlight_cursor_moved || _zsh_highlight_buffer_modified
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}
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# Brackets highlighting function.
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_zsh_highlight_brackets_highlighter()
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{
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local level=0 pos
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local -A levelpos lastoflevel matching typepos
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region_highlight=()
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# Find all brackets and remember which one is matching
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for (( pos = 0; $pos < ${#BUFFER}; pos++ )) ; do
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local char="$BUFFER[pos+1]"
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case $char in
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["([{"])
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levelpos[$pos]=$((++level))
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lastoflevel[$level]=$pos
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_zsh_highlight_brackets_highlighter_brackettype "$char"
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;;
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[")]}"])
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matching[$lastoflevel[$level]]=$pos
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matching[$pos]=$lastoflevel[$level]
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levelpos[$pos]=$((level--))
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_zsh_highlight_brackets_highlighter_brackettype "$char"
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;;
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['"'\'])
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# Skip everything inside quotes
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local quotetype=$char
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while (( $pos < ${#BUFFER} )) ; do
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(( pos++ ))
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[[ $BUFFER[$pos+1] == $quotetype ]] && break
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done
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;;
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esac
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done
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# Now highlight all found brackets
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for pos in ${(k)levelpos}; do
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if [[ -n $matching[$pos] ]] && [[ $typepos[$pos] == $typepos[$matching[$pos]] ]]; then
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local bracket_color_size=${#ZSH_HIGHLIGHT_STYLES[(I)bracket-level-*]}
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local bracket_color_level=bracket-level-$(( (levelpos[$pos] - 1) % bracket_color_size + 1 ))
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local style=$ZSH_HIGHLIGHT_STYLES[$bracket_color_level]
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region_highlight+=("$pos $((pos + 1)) $style")
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else
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local style=$ZSH_HIGHLIGHT_STYLES[bracket-error]
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region_highlight+=("$pos $((pos + 1)) $style")
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fi
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done
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# If cursor is on a bracket, then highlight corresponding bracket, if any
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pos=$CURSOR
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if [[ -n $levelpos[$pos] ]] && [[ -n $matching[$pos] ]]; then
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local otherpos=$matching[$pos]
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local style=$ZSH_HIGHLIGHT_STYLES[cursor-matchingbracket]
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region_highlight+=("$otherpos $((otherpos + 1)) $style")
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fi
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}
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# Helper function to differentiate type
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_zsh_highlight_brackets_highlighter_brackettype()
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{
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case $1 in
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["()"]) typepos[$pos]=round;;
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["[]"]) typepos[$pos]=bracket;;
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["{}"]) typepos[$pos]=curly;;
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*) ;;
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esac
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}
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