1392 lines
52 KiB
Bash
1392 lines
52 KiB
Bash
# -------------------------------------------------------------------------------------------------
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# Copyright (c) 2010-2018 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[suffix-alias]:=fg=green,underline}
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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[path]:=underline}
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: ${ZSH_HIGHLIGHT_STYLES[path_pathseparator]:=}
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: ${ZSH_HIGHLIGHT_STYLES[path_prefix_pathseparator]:=}
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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[command-substitution]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[command-substitution-delimiter]:=fg=magenta}
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: ${ZSH_HIGHLIGHT_STYLES[process-substitution]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[process-substitution-delimiter]:=fg=magenta}
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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[back-quoted-argument-delimiter]:=fg=magenta}
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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-quoted-argument]:=fg=yellow}
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: ${ZSH_HIGHLIGHT_STYLES[rc-quote]:=fg=cyan}
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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[back-dollar-quoted-argument]:=fg=cyan}
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: ${ZSH_HIGHLIGHT_STYLES[assign]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[redirection]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[comment]:=fg=black,bold}
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: ${ZSH_HIGHLIGHT_STYLES[named-fd]:=none}
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: ${ZSH_HIGHLIGHT_STYLES[arg0]:=fg=green}
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# Whether the highlighter should be called or not.
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_zsh_highlight_highlighter_main_predicate()
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{
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# may need to remove path_prefix highlighting when the line ends
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[[ $WIDGET == zle-line-finish ]] || _zsh_highlight_buffer_modified
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}
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# Helper to deal with tokens crossing line boundaries.
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_zsh_highlight_main_add_region_highlight() {
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integer start=$1 end=$2
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shift 2
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(( highlighted_alias )) && return
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(( in_alias )) && highlighted_alias=1
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# The calculation was relative to $buf but region_highlight is relative to $BUFFER.
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(( start += buf_offset ))
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(( end += buf_offset ))
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list_highlights+=($start $end $1)
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}
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_zsh_highlight_main_add_many_region_highlights() {
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for 1 2 3; do
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_zsh_highlight_main_add_region_highlight $1 $2 $3
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done
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}
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_zsh_highlight_main_calculate_fallback() {
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local -A fallback_of; fallback_of=(
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alias arg0
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suffix-alias arg0
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builtin arg0
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function arg0
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command arg0
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precommand arg0
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hashed-command arg0
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arg0_\* arg0
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path_prefix path
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# The path separator fallback won't ever be used, due to the optimisation
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# in _zsh_highlight_main_highlighter_highlight_path_separators().
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path_pathseparator path
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path_prefix_pathseparator path_prefix
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single-quoted-argument{-unclosed,}
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double-quoted-argument{-unclosed,}
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dollar-quoted-argument{-unclosed,}
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back-quoted-argument{-unclosed,}
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command-substitution{-quoted,,-unquoted,}
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command-substitution-delimiter{-quoted,,-unquoted,}
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command-substitution{-delimiter,}
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process-substitution{-delimiter,}
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back-quoted-argument{-delimiter,}
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)
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local needle=$1 value
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reply=($1)
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while [[ -n ${value::=$fallback_of[(k)$needle]} ]]; do
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unset "fallback_of[$needle]" # paranoia against infinite loops
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reply+=($value)
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needle=$value
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done
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}
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# Get the type of a command.
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#
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# Uses the zsh/parameter module if available to avoid forks, and a
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# wrapper around 'type -w' as fallback.
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#
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# If $2 is 0, do not consider aliases.
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#
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# The result will be stored in REPLY.
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_zsh_highlight_main__type() {
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integer -r aliases_allowed=${2-1}
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# We won't cache replies of anything that exists as an alias at all, to
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# ensure the cached value is correct regardless of $aliases_allowed.
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#
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# ### We probably _should_ cache them in a cache that's keyed on the value of
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# ### $aliases_allowed, on the assumption that aliases are the common case.
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integer may_cache=1
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# Cache lookup
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if (( $+_zsh_highlight_main__command_type_cache )); then
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REPLY=$_zsh_highlight_main__command_type_cache[(e)$1]
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if [[ -n "$REPLY" ]]; then
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return
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fi
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fi
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# Main logic
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if (( $#options_to_set )); then
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setopt localoptions $options_to_set;
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fi
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unset REPLY
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if zmodload -e zsh/parameter; then
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if (( $+aliases[(e)$1] )); then
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may_cache=0
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fi
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if (( $+aliases[(e)$1] )) && (( aliases_allowed )); then
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REPLY=alias
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elif [[ $1 == *.* && -n ${1%.*} ]] && (( $+saliases[(e)${1##*.}] )); then
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REPLY='suffix alias'
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elif (( $reswords[(Ie)$1] )); then
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REPLY=reserved
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elif (( $+functions[(e)$1] )); then
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REPLY=function
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elif (( $+builtins[(e)$1] )); then
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REPLY=builtin
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elif (( $+commands[(e)$1] )); then
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REPLY=command
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# zsh 5.2 and older have a bug whereby running 'type -w ./sudo' implicitly
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# runs 'hash ./sudo=/usr/local/bin/./sudo' (assuming /usr/local/bin/sudo
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# exists and is in $PATH). Avoid triggering the bug, at the expense of
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# falling through to the $() below, incurring a fork. (Issue #354.)
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#
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# The first disjunct mimics the isrelative() C call from the zsh bug.
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elif { [[ $1 != */* ]] || is-at-least 5.3 } &&
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! builtin type -w -- $1 >/dev/null 2>&1; then
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REPLY=none
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fi
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fi
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if ! (( $+REPLY )); then
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# Note that 'type -w' will run 'rehash' implicitly.
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#
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# We 'unalias' in a subshell, so the parent shell is not affected.
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#
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# The colon command is there just to avoid a command substitution that
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# starts with an arithmetic expression [«((…))» as the first thing inside
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# «$(…)»], which is area that has had some parsing bugs before 5.6
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# (approximately).
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REPLY="${$(:; (( aliases_allowed )) || unalias -- $1 2>/dev/null; LC_ALL=C builtin type -w -- $1 2>/dev/null)##*: }"
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if [[ $REPLY == 'alias' ]]; then
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may_cache=0
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fi
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fi
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# Cache population
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if (( may_cache )) && (( $+_zsh_highlight_main__command_type_cache )); then
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_zsh_highlight_main__command_type_cache[(e)$1]=$REPLY
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fi
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[[ -n $REPLY ]]
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return $?
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}
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# Checks whether $1 is something that can be run.
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#
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# Return 0 if runnable, 1 if not runnable, 2 if trouble.
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_zsh_highlight_main__is_runnable() {
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if _zsh_highlight_main__type "$1"; then
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[[ $REPLY != none ]]
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else
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return 2
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fi
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}
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# Check whether the first argument is a redirection operator token.
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# Report result via the exit code.
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_zsh_highlight_main__is_redirection() {
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# A redirection operator token:
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# - starts with an optional single-digit number;
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# - then, has a '<' or '>' character;
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# - is not a process substitution [<(...) or >(...)].
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# - is not a numeric glob <->
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[[ $1 == (<0-9>|)(\<|\>)* ]] && [[ $1 != (\<|\>)$'\x28'* ]] && [[ $1 != *'<'*'-'*'>'* ]]
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}
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# Resolve alias.
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#
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# Takes a single argument.
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#
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# The result will be stored in REPLY.
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_zsh_highlight_main__resolve_alias() {
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if zmodload -e zsh/parameter; then
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REPLY=${aliases[$arg]}
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else
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REPLY="${"$(alias -- $arg)"#*=}"
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fi
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}
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# Check that the top of $braces_stack has the expected value. If it does, set
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# the style according to $2; otherwise, set style=unknown-token.
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#
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# $1: character expected to be at the top of $braces_stack
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# $2: optional assignment to style it if matches
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# return value is 0 if there is a match else 1
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_zsh_highlight_main__stack_pop() {
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if [[ $braces_stack[1] == $1 ]]; then
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braces_stack=${braces_stack:1}
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if (( $+2 )); then
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style=$2
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fi
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return 0
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else
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style=unknown-token
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return 1
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fi
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}
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# Main syntax highlighting function.
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_zsh_highlight_highlighter_main_paint()
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{
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setopt localoptions extendedglob
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# At the PS3 prompt and in vared, highlight nothing.
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#
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# (We can't check this in _zsh_highlight_highlighter_main_predicate because
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# if the predicate returns false, the previous value of region_highlight
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# would be reused.)
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if [[ $CONTEXT == (select|vared) ]]; then
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return
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fi
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typeset -a ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR
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typeset -a ZSH_HIGHLIGHT_TOKENS_CONTROL_FLOW
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local -a options_to_set reply # used in callees
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local REPLY
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# $flags_with_argument is a set of letters, corresponding to the option letters
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# that would be followed by a colon in a getopts specification.
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local flags_with_argument
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# $flags_sans_argument is a set of letters, corresponding to the option letters
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# that wouldn't be followed by a colon in a getopts specification.
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local flags_sans_argument
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# $precommand_options maps precommand name to values of $flags_with_argument and
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# $flags_sans_argument for that precommand, joined by a colon.
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#
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# Currently, setting $flags_sans_argument is only important for commands that
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# have a non-empty $flags_with_argument; see test-data/precommand4.zsh.
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local -A precommand_options
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precommand_options=(
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# Precommand modifiers as of zsh 5.6.2 cf. zshmisc(1).
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'-' ''
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'builtin' ''
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'command' :pvV
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'exec' a:cl
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'nocorrect' ''
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'noglob' ''
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'doas' aCu:Lns # as of OpenBSD's doas(1) dated September 4, 2016
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'nice' n: # as of current POSIX spec
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'pkexec' '' # doesn't take short options; immune to #121 because it's usually not passed --option flags
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'sudo' Cgprtu:AEHKPSVbhiklnsv # as of sudo 1.8.21p2
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)
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if [[ $zsyh_user_options[ignorebraces] == on || ${zsyh_user_options[ignoreclosebraces]:-off} == on ]]; then
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local right_brace_is_recognised_everywhere=false
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else
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local right_brace_is_recognised_everywhere=true
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fi
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if [[ $zsyh_user_options[pathdirs] == on ]]; then
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options_to_set+=( PATH_DIRS )
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fi
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ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR=(
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'|' '||' ';' '&' '&&'
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'|&'
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'&!' '&|'
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# ### 'case' syntax, but followed by a pattern, not by a command
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# ';;' ';&' ';|'
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)
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# Tokens that, at (naively-determined) "command position", are followed by
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# a de jure command position. All of these are reserved words.
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ZSH_HIGHLIGHT_TOKENS_CONTROL_FLOW=(
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$'\x7b' # block
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$'\x28' # subshell
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'()' # anonymous function
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'while'
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'until'
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'if'
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'then'
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'elif'
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'else'
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'do'
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'time'
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'coproc'
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'!' # reserved word; unrelated to $histchars[1]
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)
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_zsh_highlight_main_highlighter_highlight_list -$#PREBUFFER '' 1 "$PREBUFFER$BUFFER"
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# end is a reserved word
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local start end_ style
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for start end_ style in $reply; do
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(( start >= end_ )) && { print -r -- >&2 "zsh-syntax-highlighting: BUG: _zsh_highlight_highlighter_main_paint: start($start) >= end($end_)"; return }
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(( end_ <= 0 )) && continue
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(( start < 0 )) && start=0 # having start<0 is normal with e.g. multiline strings
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_zsh_highlight_main_calculate_fallback $style
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_zsh_highlight_add_highlight $start $end_ $reply
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done
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}
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# $1 is the offset of $4 from the parent buffer. Added to the returned highlights.
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# $2 is the initial braces_stack (for a closing paren).
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# $3 is 1 if $4 contains the end of $BUFFER, else 0.
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# $4 is the buffer to highlight.
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# Returns:
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# $REPLY: $buf[REPLY] is the last character parsed.
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# $reply is an array of region_highlight additions.
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# exit code is 0 if the braces_stack is empty, 1 otherwise.
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_zsh_highlight_main_highlighter_highlight_list()
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{
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integer start_pos end_pos=0 buf_offset=$1 has_end=$3
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# last_alias is the last alias arg (lhs) expanded (if in an alias).
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# This allows for expanding alias ls='ls -l' while avoiding loops.
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local arg buf=$4 highlight_glob=true last_alias style
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local in_array_assignment=false # true between 'a=(' and the matching ')'
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# highlighted_alias is 1 when the alias arg has been highlighted with a non-alias style.
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# E.g. alias x=ls; x has been highlighted as alias AND command.
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# in_alias is equal to the number of shifts needed until arg=args[1] pops an
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# arg from BUFFER and not added by an alias.
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integer highlighted_alias=0 in_alias=0 len=$#buf
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local -a match mbegin mend list_highlights
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# seen_alias is a map of aliases already seen to avoid loops like alias a=b b=a
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local -A seen_alias
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# Pattern for parameter names
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readonly parameter_name_pattern='([A-Za-z_][A-Za-z0-9_]*|[0-9]+)'
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list_highlights=()
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# "R" for round
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# "Q" for square
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# "Y" for curly
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# "T" for [[ ]]
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# "S" for $( )
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# "D" for do/done
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# "$" for 'end' (matches 'foreach' always; also used with cshjunkiequotes in repeat/while)
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# "?" for 'if'/'fi'; also checked by 'elif'/'else'
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# ":" for 'then'
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local braces_stack=$2
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# State machine
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#
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# The states are:
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# - :start: Command word
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# - :start_of_pipeline: Start of a 'pipeline' as defined in zshmisc(1).
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# Only valid when :start: is present
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# - :sudo_opt: A leading-dash option to a precommand, whether it takes an
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# argument or not. (Example: sudo's "-u" or "-i".)
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# - :sudo_arg: The argument to a precommand's leading-dash option,
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# when given as a separate word; i.e., "foo" in "-u foo" (two
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# words) but not in "-ufoo" (one word).
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# - :regular: "Not a command word", and command delimiters are permitted.
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# Mainly used to detect premature termination of commands.
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# - :always: The word 'always' in the «{ foo } always { bar }» syntax.
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#
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# When the kind of a word is not yet known, $this_word / $next_word may contain
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# multiple states. For example, after "sudo -i", the next word may be either
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# another --flag or a command name, hence the state would include both :start:
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# and :sudo_opt:.
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#
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# The tokens are always added with both leading and trailing colons to serve as
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# word delimiters (an improvised array); [[ $x == *:foo:* ]] and x=${x//:foo:/}
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# will DTRT regardless of how many elements or repetitions $x has..
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#
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# Handling of redirections: upon seeing a redirection token, we must stall
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# the current state --- that is, the value of $this_word --- for two iterations
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# (one for the redirection operator, one for the word following it representing
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# the redirection target). Therefore, we set $in_redirection to 2 upon seeing a
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# redirection operator, decrement it each iteration, and stall the current state
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# when it is non-zero. Thus, upon reaching the next word (the one that follows
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# the redirection operator and target), $this_word will still contain values
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# appropriate for the word immediately following the word that preceded the
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# redirection operator.
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#
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# The "the previous word was a redirection operator" state is not communicated
|
|
# to the next iteration via $next_word/$this_word as usual, but via
|
|
# $in_redirection. The value of $next_word from the iteration that processed
|
|
# the operator is discarded.
|
|
#
|
|
local this_word next_word=':start::start_of_pipeline:'
|
|
integer in_redirection
|
|
# Processing buffer
|
|
local proc_buf="$buf"
|
|
local -a args
|
|
if [[ $zsyh_user_options[interactivecomments] == on ]]; then
|
|
args=(${(zZ+c+)buf})
|
|
else
|
|
args=(${(z)buf})
|
|
fi
|
|
while (( $#args )); do
|
|
arg=$args[1]
|
|
shift args
|
|
if (( in_alias )); then
|
|
(( in_alias-- ))
|
|
(( in_alias == 0 )) && highlighted_alias=0 last_alias= seen_alias=()
|
|
fi
|
|
|
|
# Initialize this_word and next_word.
|
|
if (( in_redirection == 0 )); then
|
|
this_word=$next_word
|
|
next_word=':regular:'
|
|
else
|
|
# Stall $next_word.
|
|
(( --in_redirection ))
|
|
fi
|
|
|
|
# Initialize per-"simple command" [zshmisc(1)] variables:
|
|
#
|
|
# $style how to highlight $arg
|
|
# $in_array_assignment boolean flag for "between '(' and ')' of array assignment"
|
|
# $highlight_glob boolean flag for "'noglob' is in effect"
|
|
#
|
|
style=unknown-token
|
|
if [[ $this_word == *':start:'* ]]; then
|
|
in_array_assignment=false
|
|
if [[ $arg == 'noglob' ]]; then
|
|
highlight_glob=false
|
|
fi
|
|
fi
|
|
|
|
if (( in_alias == 0 )); then
|
|
# Compute the new $start_pos and $end_pos, skipping over whitespace in $buf.
|
|
[[ "$proc_buf" = (#b)(#s)(([ $'\t']|\\$'\n')#)* ]]
|
|
# The first, outer parenthesis
|
|
integer offset="${#match[1]}"
|
|
(( start_pos = end_pos + offset ))
|
|
(( end_pos = start_pos + $#arg ))
|
|
|
|
# Compute the new $proc_buf. We advance it
|
|
# (chop off characters from the beginning)
|
|
# beyond what end_pos points to, by skipping
|
|
# as many characters as end_pos was advanced.
|
|
#
|
|
# end_pos was advanced by $offset (via start_pos)
|
|
# and by $#arg. Note the `start_pos=$end_pos`
|
|
# below.
|
|
#
|
|
# As for the [,len]. We could use [,len-start_pos+offset]
|
|
# here, but to make it easier on eyes, we use len and
|
|
# rely on the fact that Zsh simply handles that. The
|
|
# length of proc_buf is len-start_pos+offset because
|
|
# we're chopping it to match current start_pos, so its
|
|
# length matches the previous value of start_pos.
|
|
#
|
|
# Why [,-1] is slower than [,length] isn't clear.
|
|
proc_buf="${proc_buf[offset + $#arg + 1,len]}"
|
|
fi
|
|
|
|
# Handle the INTERACTIVE_COMMENTS option.
|
|
#
|
|
# We use the (Z+c+) flag so the entire comment is presented as one token in $arg.
|
|
if [[ $zsyh_user_options[interactivecomments] == on && $arg[1] == $histchars[3] ]]; then
|
|
if [[ $this_word == *(':regular:'|':start:')* ]]; then
|
|
style=comment
|
|
else
|
|
style=unknown-token # prematurely terminated
|
|
fi
|
|
_zsh_highlight_main_add_region_highlight $start_pos $end_pos $style
|
|
# Stall this arg
|
|
in_redirection=1
|
|
continue
|
|
fi
|
|
|
|
if [[ $this_word == *:start:* ]] && ! (( in_redirection )); then
|
|
# Expand aliases.
|
|
_zsh_highlight_main__type "$arg"
|
|
local res="$REPLY"
|
|
if [[ $res == "alias" ]] && [[ $last_alias != $arg ]]; then
|
|
# Avoid looping forever on alias a=b b=c c=b, but allow alias foo='foo bar'
|
|
# Also mark insane aliases as unknown-token (cf. #263).
|
|
if (( $+seen_alias[$arg] )) || [[ $arg == ?*=* ]]; then
|
|
_zsh_highlight_main_add_region_highlight $start_pos $end_pos unknown-token
|
|
continue
|
|
fi
|
|
seen_alias[$arg]=1
|
|
last_alias=$arg
|
|
_zsh_highlight_main__resolve_alias $arg
|
|
local -a alias_args
|
|
# Elision is desired in case alias x=''
|
|
alias_args=( ${interactive_comments-${(z)REPLY}}
|
|
${interactive_comments+${(zZ+c+)REPLY}} )
|
|
args=( $alias_args $args )
|
|
if (( in_alias == 0 )); then
|
|
_zsh_highlight_main_add_region_highlight $start_pos $end_pos alias
|
|
# Add one because we will in_alias-- on the next loop iteration so
|
|
# this iteration should be considered in in_alias as well
|
|
(( in_alias += $#alias_args + 1 ))
|
|
else
|
|
# This arg is already included in the count, so no need to + 1.
|
|
(( in_alias += $#alias_args ))
|
|
fi
|
|
(( in_redirection++ )) # Stall this arg
|
|
continue
|
|
else
|
|
_zsh_highlight_main_highlighter_expand_path $arg
|
|
arg=$REPLY
|
|
_zsh_highlight_main__type "$arg" 0
|
|
res="$REPLY"
|
|
fi
|
|
fi
|
|
|
|
# Analyse the current word.
|
|
if _zsh_highlight_main__is_redirection $arg ; then
|
|
if (( in_redirection == 1 )); then
|
|
# The condition excludes the case that BUFFER='{foo}>&2' and we're on the '>&'.
|
|
_zsh_highlight_main_add_region_highlight $start_pos $end_pos unknown-token
|
|
else
|
|
in_redirection=2
|
|
_zsh_highlight_main_add_region_highlight $start_pos $end_pos redirection
|
|
fi
|
|
continue
|
|
elif [[ $arg == '{'${~parameter_name_pattern}'}' ]] && _zsh_highlight_main__is_redirection $args[1]; then
|
|
# named file descriptor: {foo}>&2
|
|
in_redirection=3
|
|
_zsh_highlight_main_add_region_highlight $start_pos $end_pos named-fd
|
|
continue
|
|
fi
|
|
|
|
# Expand parameters.
|
|
#
|
|
# ### For now, expand just '$foo' or '${foo}', possibly with braces, but with
|
|
# ### no other features of the parameter expansion syntax. (No ${(x)foo},
|
|
# ### no ${foo[x]}, no ${foo:-x}.)
|
|
() {
|
|
# That's not entirely correct --- if the parameter's value happens to be a reserved
|
|
# word, the parameter expansion will be highlighted as a reserved word --- but that
|
|
# incorrectness is outweighed by the usability improvement of permitting the use of
|
|
# parameters that refer to commands, functions, and builtins.
|
|
local -a match mbegin mend
|
|
local MATCH; integer MBEGIN MEND
|
|
local parameter_name
|
|
if [[ $arg[1] == '$' ]] && [[ ${arg[2]} == '{' ]] && [[ ${arg[-1]} == '}' ]]; then
|
|
parameter_name=${${arg:2}%?}
|
|
elif [[ $arg[1] == '$' ]]; then
|
|
parameter_name=${arg:1}
|
|
fi
|
|
if [[ $res == none ]] && zmodload -e zsh/parameter &&
|
|
[[ ${parameter_name} =~ ^${~parameter_name_pattern}$ ]] &&
|
|
(( ${+parameters[(e)${MATCH}]} )) && [[ ${parameters[(e)$MATCH]} != *special* ]]
|
|
then
|
|
# Set $arg.
|
|
case ${(tP)MATCH} in
|
|
(*array*|*assoc*)
|
|
local -a words; words=( ${(P)MATCH} )
|
|
arg=${words[1]}
|
|
;;
|
|
(*)
|
|
# scalar, presumably
|
|
arg=${(P)MATCH}
|
|
;;
|
|
esac
|
|
_zsh_highlight_main__type "$arg" 0
|
|
res=$REPLY
|
|
fi
|
|
}
|
|
|
|
# Parse the sudo command line
|
|
if (( ! in_redirection )); then
|
|
if [[ $this_word == *':sudo_opt:'* ]]; then
|
|
if [[ -n $flags_with_argument ]] &&
|
|
{ [[ -n $flags_sans_argument ]] && [[ $arg == '-'[$flags_sans_argument]#[$flags_with_argument] ]] ||
|
|
[[ $arg == '-'[$flags_with_argument] ]] }; then
|
|
# Flag that requires an argument
|
|
this_word=${this_word//:start:/}
|
|
next_word=':sudo_arg:'
|
|
elif [[ -n $flags_with_argument ]] &&
|
|
{ [[ -n $flags_sans_argument ]] && [[ $arg == '-'[$flags_sans_argument]#[$flags_with_argument]* ]] ||
|
|
[[ $arg == '-'[$flags_with_argument]* ]] }; then
|
|
# Argument attached in the same word
|
|
this_word=${this_word//:start:/}
|
|
next_word+=':start:'
|
|
next_word+=':sudo_opt:'
|
|
elif [[ -n $flags_sans_argument ]] &&
|
|
[[ $arg == '-'[$flags_sans_argument]# ]]; then
|
|
# Flag that requires no argument
|
|
this_word=:sudo_opt:
|
|
next_word+=':start:'
|
|
next_word+=':sudo_opt:'
|
|
elif [[ $arg == '-'* ]]; then
|
|
# Unknown flag
|
|
this_word=:sudo_opt:
|
|
next_word+=':start:'
|
|
next_word+=':sudo_opt:'
|
|
_zsh_highlight_main_add_region_highlight $start_pos $end_pos unknown-token
|
|
continue
|
|
else
|
|
# Not an option flag; nothing to do. (If the command line is
|
|
# syntactically valid, ${this_word//:sudo_opt:/} should be
|
|
# non-empty now.)
|
|
this_word=${this_word//:sudo_opt:/}
|
|
fi
|
|
elif [[ $this_word == *':sudo_arg:'* ]]; then
|
|
next_word+=':sudo_opt:'
|
|
next_word+=':start:'
|
|
fi
|
|
fi
|
|
|
|
# The Great Fork: is this a command word? Is this a non-command word?
|
|
if [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR:#"$arg"} ]]; then
|
|
if _zsh_highlight_main__stack_pop T || _zsh_highlight_main__stack_pop Q; then
|
|
# Missing closing square bracket(s)
|
|
style=unknown-token
|
|
elif [[ $this_word == *':regular:'* ]]; then
|
|
# This highlights empty commands (semicolon follows nothing) as an error.
|
|
# Zsh accepts them, though.
|
|
style=commandseparator
|
|
else
|
|
style=unknown-token
|
|
fi
|
|
if [[ $arg == ';' ]] && $in_array_assignment; then
|
|
# literal newline inside an array assignment
|
|
next_word=':regular:'
|
|
else
|
|
next_word=':start:'
|
|
highlight_glob=true
|
|
if [[ $arg != '|' && $arg != '|&' ]]; then
|
|
next_word+=':start_of_pipeline:'
|
|
fi
|
|
fi
|
|
elif ! (( in_redirection)) && [[ $this_word == *':always:'* && $arg == 'always' ]]; then
|
|
# try-always construct
|
|
style=reserved-word # de facto a reserved word, although not de jure
|
|
next_word=':start:' # only left brace is allowed, apparently
|
|
elif ! (( in_redirection)) && [[ $this_word == *':start:'* ]]; then # $arg is the command word
|
|
if (( ${+precommand_options[$arg]} )) && _zsh_highlight_main__is_runnable $arg; then
|
|
style=precommand
|
|
flags_with_argument=${precommand_options[$arg]%:*}
|
|
flags_sans_argument=${precommand_options[$arg]#*:}
|
|
next_word=${next_word//:regular:/}
|
|
next_word+=':sudo_opt:'
|
|
next_word+=':start:'
|
|
else
|
|
case $res in
|
|
reserved) # reserved word
|
|
style=reserved-word
|
|
# Match braces and handle special cases.
|
|
case $arg in
|
|
($'\x7b')
|
|
braces_stack='Y'"$braces_stack"
|
|
;;
|
|
($'\x7d')
|
|
# We're at command word, so no need to check $right_brace_is_recognised_everywhere
|
|
_zsh_highlight_main__stack_pop 'Y' reserved-word
|
|
if [[ $style == reserved-word ]]; then
|
|
next_word+=':always:'
|
|
fi
|
|
;;
|
|
($'\x5b\x5b')
|
|
braces_stack='T'"$braces_stack"
|
|
;;
|
|
('do')
|
|
braces_stack='D'"$braces_stack"
|
|
;;
|
|
('done')
|
|
_zsh_highlight_main__stack_pop 'D' reserved-word
|
|
;;
|
|
('if')
|
|
braces_stack=':?'"$braces_stack"
|
|
;;
|
|
('then')
|
|
_zsh_highlight_main__stack_pop ':' reserved-word
|
|
;;
|
|
('elif')
|
|
if [[ ${braces_stack[1]} == '?' ]]; then
|
|
braces_stack=':'"$braces_stack"
|
|
else
|
|
style=unknown-token
|
|
fi
|
|
;;
|
|
('else')
|
|
if [[ ${braces_stack[1]} == '?' ]]; then
|
|
:
|
|
else
|
|
style=unknown-token
|
|
fi
|
|
;;
|
|
('fi')
|
|
_zsh_highlight_main__stack_pop '?'
|
|
;;
|
|
('foreach')
|
|
braces_stack='$'"$braces_stack"
|
|
;;
|
|
('end')
|
|
_zsh_highlight_main__stack_pop '$' reserved-word
|
|
;;
|
|
('repeat')
|
|
# skip the repeat-count word
|
|
in_redirection=2
|
|
# The redirection mechanism assumes $this_word describes the word
|
|
# following the redirection. Make it so.
|
|
#
|
|
# That word can be a command word with shortloops (`repeat 2 ls`)
|
|
# or a command separator (`repeat 2; ls` or `repeat 2; do ls; done`).
|
|
#
|
|
# The repeat-count word will be handled like a redirection target.
|
|
this_word=':start::regular:'
|
|
;;
|
|
('!')
|
|
if [[ $this_word != *':start_of_pipeline:'* ]]; then
|
|
style=unknown-token
|
|
else
|
|
# '!' reserved word at start of pipeline; style already set above
|
|
fi
|
|
;;
|
|
esac
|
|
;;
|
|
'suffix alias') style=suffix-alias;;
|
|
alias) :;;
|
|
builtin) style=builtin
|
|
[[ $arg == $'\x5b' ]] && braces_stack='Q'"$braces_stack"
|
|
;;
|
|
function) style=function;;
|
|
command) style=command;;
|
|
hashed) style=hashed-command;;
|
|
none) if _zsh_highlight_main_highlighter_check_assign; then
|
|
_zsh_highlight_main_add_region_highlight $start_pos $end_pos assign
|
|
local i=$(( arg[(i)=] + 1 ))
|
|
if [[ $arg[i] == '(' ]]; then
|
|
in_array_assignment=true
|
|
else
|
|
# assignment to a scalar parameter.
|
|
# (For array assignments, the command doesn't start until the ")" token.)
|
|
#
|
|
# Discard :start_of_pipeline:, if present, as '!' is not valid
|
|
# after assignments.
|
|
next_word+=':start:'
|
|
if (( start_pos + i <= end_pos )); then
|
|
() {
|
|
local highlight_glob=false
|
|
[[ $zsyh_user_options[globassign] == on ]] && highlight_glob=true
|
|
_zsh_highlight_main_highlighter_highlight_argument $i
|
|
}
|
|
fi
|
|
fi
|
|
continue
|
|
elif [[ $arg[0,1] = $histchars[0,1] ]] && (( $#arg[0,2] == 2 )); then
|
|
style=history-expansion
|
|
elif [[ $arg[0,1] == $histchars[2,2] ]]; then
|
|
style=history-expansion
|
|
elif [[ $arg[1,2] == '((' ]]; then
|
|
# Arithmetic evaluation.
|
|
#
|
|
# Note: prior to zsh-5.1.1-52-g4bed2cf (workers/36669), the ${(z)...}
|
|
# splitter would only output the '((' token if the matching '))' had
|
|
# been typed. Therefore, under those versions of zsh, BUFFER="(( 42"
|
|
# would be highlighted as an error until the matching "))" are typed.
|
|
#
|
|
# We highlight just the opening parentheses, as a reserved word; this
|
|
# is how [[ ... ]] is highlighted, too.
|
|
_zsh_highlight_main_add_region_highlight $start_pos $((start_pos + 2)) reserved-word
|
|
if [[ $arg[-2,-1] == '))' ]]; then
|
|
_zsh_highlight_main_add_region_highlight $((end_pos - 2)) $end_pos reserved-word
|
|
fi
|
|
continue
|
|
elif [[ $arg == '()' ]]; then
|
|
# anonymous function
|
|
style=reserved-word
|
|
elif [[ $arg == $'\x28' ]]; then
|
|
# subshell
|
|
style=reserved-word
|
|
braces_stack='R'"$braces_stack"
|
|
elif [[ $arg == $'\x29' ]]; then
|
|
# end of subshell or command substitution
|
|
if _zsh_highlight_main__stack_pop 'S'; then
|
|
REPLY=$start_pos
|
|
reply=($list_highlights)
|
|
return 0
|
|
fi
|
|
_zsh_highlight_main__stack_pop 'R' reserved-word
|
|
else
|
|
if _zsh_highlight_main_highlighter_check_path $arg; then
|
|
style=$REPLY
|
|
else
|
|
style=unknown-token
|
|
fi
|
|
fi
|
|
;;
|
|
*) _zsh_highlight_main_add_region_highlight $start_pos $end_pos arg0_$res
|
|
continue
|
|
;;
|
|
esac
|
|
fi
|
|
if [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_CONTROL_FLOW:#"$arg"} ]]; then
|
|
next_word=':start::start_of_pipeline:'
|
|
fi
|
|
else # $arg is a non-command word
|
|
case $arg in
|
|
$'\x29') # subshell or end of array assignment
|
|
if $in_array_assignment; then
|
|
style=assign
|
|
in_array_assignment=false
|
|
next_word+=':start:'
|
|
elif (( in_redirection )); then
|
|
style=unknown-token
|
|
else
|
|
if _zsh_highlight_main__stack_pop 'S'; then
|
|
REPLY=$start_pos
|
|
reply=($list_highlights)
|
|
return 0
|
|
fi
|
|
_zsh_highlight_main__stack_pop 'R' reserved-word
|
|
fi;;
|
|
$'\x28\x29') # possibly a function definition
|
|
if (( in_redirection )) || $in_array_assignment; then
|
|
style=unknown-token
|
|
else
|
|
if [[ $zsyh_user_options[multifuncdef] == on ]] || false # TODO: or if the previous word was a command word
|
|
then
|
|
next_word+=':start::start_of_pipeline:'
|
|
fi
|
|
style=reserved-word
|
|
fi
|
|
;;
|
|
*) if false; then
|
|
elif [[ $arg = $'\x7d' ]] && $right_brace_is_recognised_everywhere; then
|
|
# Parsing rule: {
|
|
#
|
|
# Additionally, `tt(})' is recognized in any position if neither the
|
|
# tt(IGNORE_BRACES) option nor the tt(IGNORE_CLOSE_BRACES) option is set.
|
|
if (( in_redirection )) || $in_array_assignment; then
|
|
style=unknown-token
|
|
else
|
|
_zsh_highlight_main__stack_pop 'Y' reserved-word
|
|
if [[ $style == reserved-word ]]; then
|
|
next_word+=':always:'
|
|
fi
|
|
fi
|
|
elif [[ $arg[0,1] = $histchars[0,1] ]] && (( $#arg[0,2] == 2 )); then
|
|
style=history-expansion
|
|
elif [[ $arg == $'\x5d\x5d' ]] && _zsh_highlight_main__stack_pop 'T' reserved-word; then
|
|
:
|
|
elif [[ $arg == $'\x5d' ]] && _zsh_highlight_main__stack_pop 'Q' builtin; then
|
|
:
|
|
else
|
|
_zsh_highlight_main_highlighter_highlight_argument 1 $(( 1 != in_redirection ))
|
|
continue
|
|
fi
|
|
;;
|
|
esac
|
|
fi
|
|
_zsh_highlight_main_add_region_highlight $start_pos $end_pos $style
|
|
done
|
|
[[ "$proc_buf" = (#b)(#s)(([[:space:]]|\\$'\n')#) ]]
|
|
REPLY=$(( end_pos + ${#match[1]} - 1 ))
|
|
reply=($list_highlights)
|
|
return $(( $#braces_stack > 0 ))
|
|
}
|
|
|
|
# Check if $arg is variable assignment
|
|
_zsh_highlight_main_highlighter_check_assign()
|
|
{
|
|
setopt localoptions extended_glob
|
|
[[ $arg == [[:alpha:]_][[:alnum:]_]#(|\[*\])(|[+])=* ]] ||
|
|
[[ $arg == [0-9]##(|[+])=* ]]
|
|
}
|
|
|
|
_zsh_highlight_main_highlighter_highlight_path_separators()
|
|
{
|
|
local pos style_pathsep
|
|
style_pathsep=$1_pathseparator
|
|
reply=()
|
|
[[ -z "$ZSH_HIGHLIGHT_STYLES[$style_pathsep]" || "$ZSH_HIGHLIGHT_STYLES[$1]" == "$ZSH_HIGHLIGHT_STYLES[$style_pathsep]" ]] && return 0
|
|
for (( pos = start_pos; $pos <= end_pos; pos++ )) ; do
|
|
if [[ $BUFFER[pos] == / ]]; then
|
|
reply+=($((pos - 1)) $pos $style_pathsep)
|
|
fi
|
|
done
|
|
}
|
|
|
|
# Check if $1 is a path.
|
|
# If yes, return 0 and in $REPLY the style to use.
|
|
# Else, return non-zero (and the contents of $REPLY is undefined).
|
|
_zsh_highlight_main_highlighter_check_path()
|
|
{
|
|
_zsh_highlight_main_highlighter_expand_path "$1"
|
|
local expanded_path="$REPLY" tmp_path
|
|
|
|
REPLY=path
|
|
|
|
[[ -z $expanded_path ]] && return 1
|
|
|
|
# Check if this is a blacklisted path
|
|
if [[ $expanded_path[1] == / ]]; then
|
|
tmp_path=$expanded_path
|
|
else
|
|
tmp_path=$PWD/$expanded_path
|
|
fi
|
|
tmp_path=$tmp_path:a
|
|
|
|
while [[ $tmp_path != / ]]; do
|
|
[[ -n ${(M)X_ZSH_HIGHLIGHT_DIRS_BLACKLIST:#$tmp_path} ]] && return 1
|
|
tmp_path=$tmp_path:h
|
|
done
|
|
|
|
[[ -L $expanded_path ]] && return 0
|
|
[[ -e $expanded_path ]] && return 0
|
|
|
|
# Search the path in CDPATH
|
|
local cdpath_dir
|
|
for cdpath_dir in $cdpath ; do
|
|
[[ -e "$cdpath_dir/$expanded_path" ]] && return 0
|
|
done
|
|
|
|
# If dirname($1) doesn't exist, neither does $1.
|
|
[[ ! -d ${expanded_path:h} ]] && return 1
|
|
|
|
# If this word ends the buffer, check if it's the prefix of a valid path.
|
|
if (( has_end && (len == end_pos) )) &&
|
|
[[ $WIDGET != zle-line-finish ]]; then
|
|
local -a tmp
|
|
tmp=( ${expanded_path}*(N) )
|
|
(( $#tmp > 0 )) && REPLY=path_prefix && return 0
|
|
fi
|
|
|
|
# It's not a path.
|
|
return 1
|
|
}
|
|
|
|
# Highlight an argument and possibly special chars in quotes starting at $1 in $arg
|
|
# This command will at least highlight $1 to end_pos with the default style
|
|
# If $2 is set to 0, the argument cannot be highlighted as an option.
|
|
_zsh_highlight_main_highlighter_highlight_argument()
|
|
{
|
|
local base_style=default i=$1 option_eligible=${2:-1} path_eligible=1 ret start style
|
|
local -a highlights
|
|
|
|
local -a match mbegin mend
|
|
local MATCH; integer MBEGIN MEND
|
|
|
|
case "$arg[i]" in
|
|
'%')
|
|
if [[ $arg[i+1] == '?' ]]; then
|
|
(( i += 2 ))
|
|
fi
|
|
;;
|
|
'-')
|
|
if (( option_eligible )); then
|
|
if [[ $arg[i+1] == - ]]; then
|
|
base_style=double-hyphen-option
|
|
else
|
|
base_style=single-hyphen-option
|
|
fi
|
|
path_eligible=0
|
|
fi
|
|
;;
|
|
'=')
|
|
if [[ $arg[i+1] == $'\x28' ]]; then
|
|
(( i += 2 ))
|
|
_zsh_highlight_main_highlighter_highlight_list $(( start_pos + i - 1 )) S $has_end $arg[i,end_pos]
|
|
ret=$?
|
|
(( i += REPLY ))
|
|
highlights+=(
|
|
$(( start_pos + $1 - 1 )) $(( start_pos + i )) process-substitution
|
|
$(( start_pos + $1 - 1 )) $(( start_pos + $1 + 1 )) process-substitution-delimiter
|
|
$reply
|
|
)
|
|
if (( ret == 0 )); then
|
|
highlights+=($(( start_pos + i - 1 )) $(( start_pos + i )) process-substitution-delimiter)
|
|
fi
|
|
fi
|
|
esac
|
|
|
|
for (( ; i <= end_pos - start_pos ; i += 1 )); do
|
|
case "$arg[$i]" in
|
|
"\\") (( i += 1 )); continue;;
|
|
"'")
|
|
_zsh_highlight_main_highlighter_highlight_single_quote $i
|
|
(( i = REPLY ))
|
|
highlights+=($reply)
|
|
;;
|
|
'"')
|
|
_zsh_highlight_main_highlighter_highlight_double_quote $i
|
|
(( i = REPLY ))
|
|
highlights+=($reply)
|
|
;;
|
|
'`')
|
|
_zsh_highlight_main_highlighter_highlight_backtick $i
|
|
(( i = REPLY ))
|
|
highlights+=($reply)
|
|
;;
|
|
'$')
|
|
path_eligible=0
|
|
if [[ $arg[i+1] == "'" ]]; then
|
|
path_eligible=1
|
|
_zsh_highlight_main_highlighter_highlight_dollar_quote $i
|
|
(( i = REPLY ))
|
|
highlights+=($reply)
|
|
continue
|
|
elif [[ $arg[i+1] == $'\x28' ]]; then
|
|
start=$i
|
|
(( i += 2 ))
|
|
_zsh_highlight_main_highlighter_highlight_list $(( start_pos + i - 1 )) S $has_end $arg[i,end_pos]
|
|
ret=$?
|
|
(( i += REPLY ))
|
|
highlights+=(
|
|
$(( start_pos + start - 1)) $(( start_pos + i )) command-substitution-unquoted
|
|
$(( start_pos + start - 1)) $(( start_pos + start + 1)) command-substitution-delimiter-unquoted
|
|
$reply
|
|
)
|
|
if (( ret == 0 )); then
|
|
highlights+=($(( start_pos + i - 1)) $(( start_pos + i )) command-substitution-delimiter-unquoted)
|
|
fi
|
|
continue
|
|
fi
|
|
while [[ $arg[i+1] == [\^=~#+] ]]; do
|
|
(( i += 1 ))
|
|
done
|
|
if [[ $arg[i+1] == [*@#?$!-] ]]; then
|
|
(( i += 1 ))
|
|
fi;;
|
|
[\<\>])
|
|
if [[ $arg[i+1] == $'\x28' ]]; then # \x28 = open paren
|
|
start=$i
|
|
(( i += 2 ))
|
|
_zsh_highlight_main_highlighter_highlight_list $(( start_pos + i - 1 )) S $has_end $arg[i,end_pos]
|
|
ret=$?
|
|
(( i += REPLY ))
|
|
highlights+=(
|
|
$(( start_pos + start - 1)) $(( start_pos + i )) process-substitution
|
|
$(( start_pos + start - 1)) $(( start_pos + start + 1 )) process-substitution-delimiter
|
|
$reply
|
|
)
|
|
if (( ret == 0 )); then
|
|
highlights+=($(( start_pos + i - 1)) $(( start_pos + i )) process-substitution-delimiter)
|
|
fi
|
|
continue
|
|
fi
|
|
;|
|
|
*)
|
|
if $highlight_glob && [[ ${arg[$i]} =~ ^[*?] || ${arg:$i-1} =~ ^\<[0-9]*-[0-9]*\> ]]; then
|
|
highlights+=($(( start_pos + i - 1 )) $(( start_pos + i + $#MATCH - 1)) globbing)
|
|
(( i += $#MATCH - 1 ))
|
|
path_eligible=0
|
|
else
|
|
continue
|
|
fi
|
|
;;
|
|
esac
|
|
done
|
|
|
|
if (( path_eligible )) && _zsh_highlight_main_highlighter_check_path $arg[$1,end_pos]; then
|
|
base_style=$REPLY
|
|
_zsh_highlight_main_highlighter_highlight_path_separators $base_style
|
|
highlights+=($reply)
|
|
fi
|
|
|
|
highlights=($(( start_pos + $1 - 1 )) $end_pos $base_style $highlights)
|
|
_zsh_highlight_main_add_many_region_highlights $highlights
|
|
}
|
|
|
|
# Quote Helper Functions
|
|
#
|
|
# $arg is expected to be set to the current argument
|
|
# $start_pos is expected to be set to the start of $arg in $BUFFER
|
|
# $1 is the index in $arg which starts the quote
|
|
# $REPLY is returned as the end of quote index in $arg
|
|
# $reply is returned as an array of region_highlight additions
|
|
|
|
# Highlight single-quoted strings
|
|
_zsh_highlight_main_highlighter_highlight_single_quote()
|
|
{
|
|
local arg1=$1 i q=\' style
|
|
i=$arg[(ib:arg1+1:)$q]
|
|
reply=()
|
|
|
|
if [[ $zsyh_user_options[rcquotes] == on ]]; then
|
|
while [[ $arg[i+1] == "'" ]]; do
|
|
reply+=($(( start_pos + i - 1 )) $(( start_pos + i + 1 )) rc-quote)
|
|
(( i++ ))
|
|
i=$arg[(ib:i+1:)$q]
|
|
done
|
|
fi
|
|
|
|
if [[ $arg[i] == "'" ]]; then
|
|
style=single-quoted-argument
|
|
else
|
|
# If unclosed, i points past the end
|
|
(( i-- ))
|
|
style=single-quoted-argument-unclosed
|
|
fi
|
|
reply=($(( start_pos + arg1 - 1 )) $(( start_pos + i )) $style $reply)
|
|
REPLY=$i
|
|
}
|
|
|
|
# Highlight special chars inside double-quoted strings
|
|
_zsh_highlight_main_highlighter_highlight_double_quote()
|
|
{
|
|
local -a breaks match mbegin mend saved_reply
|
|
local MATCH; integer last_break=$(( start_pos + $1 - 1 )) MBEGIN MEND
|
|
local i j k ret style
|
|
reply=()
|
|
|
|
for (( i = $1 + 1 ; i <= end_pos - start_pos ; i += 1 )) ; do
|
|
(( j = i + start_pos - 1 ))
|
|
(( k = j + 1 ))
|
|
case "$arg[$i]" in
|
|
'"') break;;
|
|
'`') saved_reply=($reply)
|
|
_zsh_highlight_main_highlighter_highlight_backtick $i
|
|
(( i = REPLY ))
|
|
reply=($saved_reply $reply)
|
|
continue
|
|
;;
|
|
'$' ) style=dollar-double-quoted-argument
|
|
# Look for an alphanumeric parameter name.
|
|
if [[ ${arg:$i} =~ ^([A-Za-z_][A-Za-z0-9_]*|[0-9]+) ]] ; then
|
|
(( k += $#MATCH )) # highlight the parameter name
|
|
(( i += $#MATCH )) # skip past it
|
|
elif [[ ${arg:$i} =~ ^[{]([A-Za-z_][A-Za-z0-9_]*|[0-9]+)[}] ]] ; then
|
|
(( k += $#MATCH )) # highlight the parameter name and braces
|
|
(( i += $#MATCH )) # skip past it
|
|
elif [[ $arg[i+1] == '$' ]]; then
|
|
# $$ - pid
|
|
(( k += 1 )) # highlight both dollar signs
|
|
(( i += 1 )) # don't consider the second one as introducing another parameter expansion
|
|
elif [[ $arg[i+1] == [-#*@?] ]]; then
|
|
# $#, $*, $@, $?, $- - like $$ above
|
|
(( k += 1 )) # highlight both dollar signs
|
|
(( i += 1 )) # don't consider the second one as introducing another parameter expansion
|
|
elif [[ $arg[i+1] == $'\x28' ]]; then
|
|
breaks+=( $last_break $(( start_pos + i - 1 )) )
|
|
(( i += 2 ))
|
|
saved_reply=($reply)
|
|
_zsh_highlight_main_highlighter_highlight_list $(( start_pos + i - 1 )) S $has_end $arg[i,end_pos]
|
|
ret=$?
|
|
(( i += REPLY ))
|
|
last_break=$(( start_pos + i ))
|
|
reply=(
|
|
$saved_reply
|
|
$j $(( start_pos + i )) command-substitution-quoted
|
|
$j $(( j + 2 )) command-substitution-delimiter-quoted
|
|
$reply
|
|
)
|
|
if (( ret == 0 )); then
|
|
reply+=($(( start_pos + i - 1 )) $(( start_pos + i )) command-substitution-delimiter-quoted)
|
|
fi
|
|
continue
|
|
else
|
|
continue
|
|
fi
|
|
;;
|
|
"\\") style=back-double-quoted-argument
|
|
if [[ \\\`\"\$${histchars[1]} == *$arg[$i+1]* ]]; then
|
|
(( k += 1 )) # Color following char too.
|
|
(( i += 1 )) # Skip parsing the escaped char.
|
|
else
|
|
continue
|
|
fi
|
|
;;
|
|
($histchars[1]) # ! - may be a history expansion
|
|
if [[ $arg[i+1] != ('='|$'\x28'|$'\x7b'|[[:blank:]]) ]]; then
|
|
style=history-expansion
|
|
else
|
|
continue
|
|
fi
|
|
;;
|
|
*) continue ;;
|
|
|
|
esac
|
|
reply+=($j $k $style)
|
|
done
|
|
|
|
if [[ $arg[i] == '"' ]]; then
|
|
style=double-quoted-argument
|
|
else
|
|
# If unclosed, i points past the end
|
|
(( i-- ))
|
|
style=double-quoted-argument-unclosed
|
|
fi
|
|
(( last_break != start_pos + i )) && breaks+=( $last_break $(( start_pos + i )) )
|
|
saved_reply=($reply)
|
|
reply=()
|
|
for 1 2 in $breaks; do
|
|
reply+=($1 $2 $style)
|
|
done
|
|
reply+=($saved_reply)
|
|
REPLY=$i
|
|
}
|
|
|
|
# Highlight special chars inside dollar-quoted strings
|
|
_zsh_highlight_main_highlighter_highlight_dollar_quote()
|
|
{
|
|
local -a match mbegin mend
|
|
local MATCH; integer MBEGIN MEND
|
|
local i j k style
|
|
local AA
|
|
integer c
|
|
reply=()
|
|
|
|
for (( i = $1 + 2 ; i <= end_pos - start_pos ; i += 1 )) ; do
|
|
(( j = i + start_pos - 1 ))
|
|
(( k = j + 1 ))
|
|
case "$arg[$i]" in
|
|
"'") break;;
|
|
"\\") style=back-dollar-quoted-argument
|
|
for (( c = i + 1 ; c <= end_pos - start_pos ; c += 1 )); do
|
|
[[ "$arg[$c]" != ([0-9xXuUa-fA-F]) ]] && break
|
|
done
|
|
AA=$arg[$i+1,$c-1]
|
|
# Matching for HEX and OCT values like \0xA6, \xA6 or \012
|
|
if [[ "$AA" =~ "^(x|X)[0-9a-fA-F]{1,2}"
|
|
|| "$AA" =~ "^[0-7]{1,3}"
|
|
|| "$AA" =~ "^u[0-9a-fA-F]{1,4}"
|
|
|| "$AA" =~ "^U[0-9a-fA-F]{1,8}"
|
|
]]; then
|
|
(( k += $#MATCH ))
|
|
(( i += $#MATCH ))
|
|
else
|
|
if (( $#arg > $i+1 )) && [[ $arg[$i+1] == [xXuU] ]]; then
|
|
# \x not followed by hex digits is probably an error
|
|
style=unknown-token
|
|
fi
|
|
(( k += 1 )) # Color following char too.
|
|
(( i += 1 )) # Skip parsing the escaped char.
|
|
fi
|
|
;;
|
|
*) continue ;;
|
|
|
|
esac
|
|
reply+=($j $k $style)
|
|
done
|
|
|
|
if [[ $arg[i] == "'" ]]; then
|
|
style=dollar-quoted-argument
|
|
else
|
|
# If unclosed, i points past the end
|
|
(( i-- ))
|
|
style=dollar-quoted-argument-unclosed
|
|
fi
|
|
reply=($(( start_pos + $1 - 1 )) $(( start_pos + i )) $style $reply)
|
|
REPLY=$i
|
|
}
|
|
|
|
# Highlight backtick substitutions
|
|
_zsh_highlight_main_highlighter_highlight_backtick()
|
|
{
|
|
# buf is the contents of the backticks with a layer of backslashes removed.
|
|
# last is the index of arg for the start of the string to be copied into buf.
|
|
# It is either one past the beginning backtick or one past the last backslash.
|
|
# offset is a count of consumed \ (the delta between buf and arg).
|
|
# offsets is an array indexed by buf offset of when the delta between buf and arg changes.
|
|
# It is sparse, so search backwards to the last value
|
|
local buf highlight style=back-quoted-argument-unclosed style_end
|
|
local -i arg1=$1 end_ i=$1 last offset=0 start subshell_has_end=0
|
|
local -a highlight_zone highlights offsets
|
|
reply=()
|
|
|
|
last=$(( arg1 + 1 ))
|
|
# Remove one layer of backslashes and find the end
|
|
while i=$arg[(ib:i+1:)[\\\\\`]]; do # find the next \ or `
|
|
if (( i > end_pos - start_pos )); then
|
|
buf=$buf$arg[last,i]
|
|
offsets[i-arg1-offset]='' # So we never index past the end
|
|
(( i-- ))
|
|
subshell_has_end=$(( has_end && (start_pos + i == len) ))
|
|
break
|
|
fi
|
|
|
|
if [[ $arg[i] == '\' ]]; then
|
|
(( i++ ))
|
|
# POSIX XCU 2.6.3
|
|
if [[ $arg[i] == ('$'|'`'|'\') ]]; then
|
|
buf=$buf$arg[last,i-2]
|
|
(( offset++ ))
|
|
# offsets is relative to buf, so adjust by -arg1
|
|
offsets[i-arg1-offset]=$offset
|
|
else
|
|
buf=$buf$arg[last,i-1]
|
|
fi
|
|
else # it's an unquoted ` and this is the end
|
|
style=back-quoted-argument
|
|
style_end=back-quoted-argument-delimiter
|
|
buf=$buf$arg[last,i-1]
|
|
offsets[i-arg1-offset]='' # So we never index past the end
|
|
break
|
|
fi
|
|
last=$i
|
|
done
|
|
|
|
_zsh_highlight_main_highlighter_highlight_list 0 '' $subshell_has_end $buf
|
|
|
|
# Munge the reply to account for removed backslashes
|
|
for start end_ highlight in $reply; do
|
|
start=$(( start_pos + arg1 + start + offsets[(Rb:start:)?*] ))
|
|
end_=$(( start_pos + arg1 + end_ + offsets[(Rb:end_:)?*] ))
|
|
highlights+=($start $end_ $highlight)
|
|
if [[ $highlight == back-quoted-argument-unclosed && $style == back-quoted-argument ]]; then
|
|
# An inner backtick command substitution is unclosed, but this level is closed
|
|
style_end=unknown-token
|
|
fi
|
|
done
|
|
|
|
reply=(
|
|
$(( start_pos + arg1 - 1 )) $(( start_pos + i )) $style
|
|
$(( start_pos + arg1 - 1 )) $(( start_pos + arg1 )) back-quoted-argument-delimiter
|
|
$highlights
|
|
)
|
|
if (( $#style_end )); then
|
|
reply+=($(( start_pos + i - 1)) $(( start_pos + i )) $style_end)
|
|
fi
|
|
REPLY=$i
|
|
}
|
|
|
|
# Called with a single positional argument.
|
|
# Perform filename expansion (tilde expansion) on the argument and set $REPLY to the expanded value.
|
|
#
|
|
# Does not perform filename generation (globbing).
|
|
_zsh_highlight_main_highlighter_expand_path()
|
|
{
|
|
(( $# == 1 )) || print -r -- >&2 "zsh-syntax-highlighting: BUG: _zsh_highlight_main_highlighter_expand_path: called without argument"
|
|
|
|
# The $~1 syntax normally performs filename generation, but not when it's on the right-hand side of ${x:=y}.
|
|
setopt localoptions nonomatch
|
|
unset REPLY
|
|
: ${REPLY:=${(Q)${~1}}}
|
|
}
|
|
|
|
# -------------------------------------------------------------------------------------------------
|
|
# Main highlighter initialization
|
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# -------------------------------------------------------------------------------------------------
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_zsh_highlight_main__precmd_hook() {
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_zsh_highlight_main__command_type_cache=()
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}
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autoload -Uz add-zsh-hook
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if add-zsh-hook precmd _zsh_highlight_main__precmd_hook 2>/dev/null; then
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# Initialize command type cache
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typeset -gA _zsh_highlight_main__command_type_cache
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else
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print -r -- >&2 'zsh-syntax-highlighting: Failed to load add-zsh-hook. Some speed optimizations will not be used.'
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# Make sure the cache is unset
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unset _zsh_highlight_main__command_type_cache
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fi
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typeset -ga X_ZSH_HIGHLIGHT_DIRS_BLACKLIST
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