341a3ae1f0
_zsh_highlight_add_highlight appends to region_highlight $1 $2 and the next non-null parameter. If there is no non-null parameter, do nothing, This is so that highlighters can add a style with fallbacks if the most specific style is not defined. If none of the applicable styles are defined, do the right thing and don't add an invalid entry to region_highlight. The pattern highlighter doesn't use this function as it'd need too large of an API change.
112 lines
4.5 KiB
Bash
112 lines
4.5 KiB
Bash
# -------------------------------------------------------------------------------------------------
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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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: ${ZSH_HIGHLIGHT_STYLES[cursor-matchingbracket]:=standout}
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# Whether the brackets highlighter should be called or not.
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_zsh_highlight_brackets_highlighter_predicate()
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{
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_zsh_highlight_cursor_moved || _zsh_highlight_buffer_modified
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}
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# Brackets highlighting function.
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_zsh_highlight_brackets_highlighter()
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{
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local level=0 pos
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local -A levelpos lastoflevel matching typepos
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integer buflen=${#BUFFER}
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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 < buflen; 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 < buflen )) ; 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=$bracket_color_level
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_zsh_highlight_add_highlight $pos $((pos + 1)) $style
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else
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local style=bracket-error
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_zsh_highlight_add_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=cursor-matchingbracket
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_zsh_highlight_add_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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