c62cb54e9d
Zsh does not allow the variable name or the equals sign to be quoted or
escaped. The previous code incorrectly highlighted the following
examples as assignments:
$ 'x=y'
zsh: command not found: x=y
$ x\=y
zsh: command not found: x=y
$ "x"=y
zsh: command not found: x=y
$ \x=y
zsh: command not found: x=y
221 lines
9.7 KiB
Bash
Executable File
221 lines
9.7 KiB
Bash
Executable File
#!/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[default]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[unknown-token]:=fg=red,bold}
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: ${ZSH_HIGHLIGHT_STYLES[reserved-word]:=fg=yellow}
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: ${ZSH_HIGHLIGHT_STYLES[alias]:=fg=green}
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: ${ZSH_HIGHLIGHT_STYLES[builtin]:=fg=green}
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: ${ZSH_HIGHLIGHT_STYLES[function]:=fg=green}
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: ${ZSH_HIGHLIGHT_STYLES[command]:=fg=green}
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: ${ZSH_HIGHLIGHT_STYLES[precommand]:=fg=green,underline}
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: ${ZSH_HIGHLIGHT_STYLES[commandseparator]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[hashed-command]:=fg=green}
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: ${ZSH_HIGHLIGHT_STYLES[path]:=underline}
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: ${ZSH_HIGHLIGHT_STYLES[path_prefix]:=underline}
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: ${ZSH_HIGHLIGHT_STYLES[path_approx]:=fg=yellow,underline}
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: ${ZSH_HIGHLIGHT_STYLES[globbing]:=fg=blue}
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: ${ZSH_HIGHLIGHT_STYLES[history-expansion]:=fg=blue}
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: ${ZSH_HIGHLIGHT_STYLES[single-hyphen-option]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[double-hyphen-option]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[back-quoted-argument]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[single-quoted-argument]:=fg=yellow}
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: ${ZSH_HIGHLIGHT_STYLES[double-quoted-argument]:=fg=yellow}
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: ${ZSH_HIGHLIGHT_STYLES[dollar-double-quoted-argument]:=fg=cyan}
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: ${ZSH_HIGHLIGHT_STYLES[back-double-quoted-argument]:=fg=cyan}
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: ${ZSH_HIGHLIGHT_STYLES[assign]:=none}
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# Whether the highlighter should be called or not.
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_zsh_highlight_main_highlighter_predicate()
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{
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_zsh_highlight_buffer_modified
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}
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# Main syntax highlighting function.
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_zsh_highlight_main_highlighter()
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{
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emulate -L zsh
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setopt localoptions extendedglob bareglobqual
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local start_pos=0 end_pos highlight_glob=true new_expression=true arg style
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typeset -a ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR
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typeset -a ZSH_HIGHLIGHT_TOKENS_PRECOMMANDS
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typeset -a ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS
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region_highlight=()
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ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR=(
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'|' '||' ';' '&' '&&'
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)
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ZSH_HIGHLIGHT_TOKENS_PRECOMMANDS=(
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'builtin' 'command' 'exec' 'nocorrect' 'noglob' 'sudo'
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)
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# Tokens that are always immediately followed by a command.
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ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS=(
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$ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR $ZSH_HIGHLIGHT_TOKENS_PRECOMMANDS
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)
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for arg in ${(z)BUFFER}; do
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local substr_color=0
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local style_override=""
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[[ $start_pos -eq 0 && $arg = 'noglob' ]] && highlight_glob=false
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((start_pos+=${#BUFFER[$start_pos+1,-1]}-${#${BUFFER[$start_pos+1,-1]##[[:space:]]#}}))
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((end_pos=$start_pos+${#arg}))
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if $new_expression; then
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new_expression=false
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if [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_PRECOMMANDS:#"$arg"} ]]; then
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style=$ZSH_HIGHLIGHT_STYLES[precommand]
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else
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res=$(LC_ALL=C builtin type -w $arg 2>/dev/null)
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case $res in
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*': reserved') style=$ZSH_HIGHLIGHT_STYLES[reserved-word];;
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*': alias') style=$ZSH_HIGHLIGHT_STYLES[alias]
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local aliased_command="${"$(alias $arg)"#*=}"
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[[ -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+=($arg)
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;;
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*': builtin') style=$ZSH_HIGHLIGHT_STYLES[builtin];;
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*': function') style=$ZSH_HIGHLIGHT_STYLES[function];;
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*': command') style=$ZSH_HIGHLIGHT_STYLES[command];;
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*': hashed') style=$ZSH_HIGHLIGHT_STYLES[hashed-command];;
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*) if _zsh_highlight_main_highlighter_check_assign; then
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style=$ZSH_HIGHLIGHT_STYLES[assign]
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new_expression=true
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elif _zsh_highlight_main_highlighter_check_path; then
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style=$ZSH_HIGHLIGHT_STYLES[path]
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elif [[ $arg[0,1] = $histchars[0,1] ]]; then
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style=$ZSH_HIGHLIGHT_STYLES[history-expansion]
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else
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style=$ZSH_HIGHLIGHT_STYLES[unknown-token]
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fi
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;;
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esac
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fi
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else
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case $arg in
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'--'*) style=$ZSH_HIGHLIGHT_STYLES[double-hyphen-option];;
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'-'*) style=$ZSH_HIGHLIGHT_STYLES[single-hyphen-option];;
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"'"*"'") style=$ZSH_HIGHLIGHT_STYLES[single-quoted-argument];;
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'"'*'"') style=$ZSH_HIGHLIGHT_STYLES[double-quoted-argument]
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region_highlight+=("$start_pos $end_pos $style")
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_zsh_highlight_main_highlighter_highlight_string
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substr_color=1
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;;
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'`'*'`') style=$ZSH_HIGHLIGHT_STYLES[back-quoted-argument];;
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*"*"*) $highlight_glob && style=$ZSH_HIGHLIGHT_STYLES[globbing] || style=$ZSH_HIGHLIGHT_STYLES[default];;
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*) if _zsh_highlight_main_highlighter_check_path; then
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style=$ZSH_HIGHLIGHT_STYLES[path]
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elif [[ $arg[0,1] = $histchars[0,1] ]]; then
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style=$ZSH_HIGHLIGHT_STYLES[history-expansion]
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elif [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR:#"$arg"} ]]; then
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style=$ZSH_HIGHLIGHT_STYLES[commandseparator]
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else
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style=$ZSH_HIGHLIGHT_STYLES[default]
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fi
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;;
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esac
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fi
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# if a style_override was set (eg in _zsh_highlight_main_highlighter_check_path), use it
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[[ -n $style_override ]] && style=$ZSH_HIGHLIGHT_STYLES[$style_override]
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[[ $substr_color = 0 ]] && region_highlight+=("$start_pos $end_pos $style")
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[[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$arg"} ]] && new_expression=true
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start_pos=$end_pos
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done
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}
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# Check if the argument is variable assignment
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_zsh_highlight_main_highlighter_check_assign()
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{
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setopt localoptions extended_glob
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[[ $arg == [[:alpha:]_]([[:alnum:]_])#=* ]]
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}
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# Check if the argument is a path.
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_zsh_highlight_main_highlighter_check_path()
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{
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setopt localoptions nonomatch
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local expanded_path; : ${expanded_path:=${(Q)~arg}}
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[[ -z $expanded_path ]] && return 1
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[[ -e $expanded_path ]] && return 0
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# Search the path in CDPATH
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for cdpath_dir in $cdpath ; do
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[[ -e "$cdpath_dir/$expanded_path" ]] && return 0
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done
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[[ ! -e ${expanded_path:h} ]] && return 1
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if [[ ${BUFFER[1]} != "-" && ${#BUFFER} == $end_pos ]]; then
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local -a tmp
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# got a path prefix?
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tmp=( ${expanded_path}*(N) )
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(( $#tmp > 0 )) && style_override=path_prefix && return 0
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# or maybe an approximate path?
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tmp=( (#a1)${expanded_path}*(N) )
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(( $#tmp > 0 )) && style_override=path_approx && return 0
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fi
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return 1
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}
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# Highlight special chars inside double-quoted strings
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_zsh_highlight_main_highlighter_highlight_string()
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{
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setopt localoptions noksharrays
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local i j k style varflag
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# Starting quote is at 1, so start parsing at offset 2 in the string.
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for (( i = 2 ; i < end_pos - start_pos ; i += 1 )) ; do
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(( j = i + start_pos - 1 ))
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(( k = j + 1 ))
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case "$arg[$i]" in
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'$' ) style=$ZSH_HIGHLIGHT_STYLES[dollar-double-quoted-argument]
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(( varflag = 1))
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;;
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"\\") style=$ZSH_HIGHLIGHT_STYLES[back-double-quoted-argument]
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for (( c = i + 1 ; c < end_pos - start_pos ; c += 1 )); do
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[[ "$arg[$c]" != ([0-9,xX,a-f,A-F]) ]] && break
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done
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AA=$arg[$i+1,$c-1]
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# Matching for HEX and OCT values like \0xA6, \xA6 or \012
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if [[ "$AA" =~ "^(0*(x|X)[0-9,a-f,A-F]{1,2})" || "$AA" =~ "^(0[0-7]{1,3})" ]];then
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(( k += $#MATCH ))
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(( i += $#MATCH ))
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else
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(( k += 1 )) # Color following char too.
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(( i += 1 )) # Skip parsing the escaped char.
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fi
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(( varflag = 0 )) # End of variable
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;;
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([^a-zA-Z0-9_]))
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(( varflag = 0 )) # End of variable
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continue
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;;
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*) [[ $varflag -eq 0 ]] && continue ;;
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esac
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region_highlight+=("$j $k $style")
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done
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}
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