824 lines
32 KiB
Bash
824 lines
32 KiB
Bash
# -------------------------------------------------------------------------------------------------
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# Copyright (c) 2010-2016 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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typeset -gA __hsmw_highlight_main__command_type_cache
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# Define default styles.
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typeset -gA HSMW_HIGHLIGHT_STYLES
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: ${HSMW_HIGHLIGHT_STYLES[default]:=none}
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: ${HSMW_HIGHLIGHT_STYLES[unknown-token]:=fg=red,bold}
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: ${HSMW_HIGHLIGHT_STYLES[reserved-word]:=fg=yellow}
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: ${HSMW_HIGHLIGHT_STYLES[alias]:=fg=green}
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: ${HSMW_HIGHLIGHT_STYLES[suffix-alias]:=fg=green}
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: ${HSMW_HIGHLIGHT_STYLES[builtin]:=fg=green}
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: ${HSMW_HIGHLIGHT_STYLES[function]:=fg=green}
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: ${HSMW_HIGHLIGHT_STYLES[command]:=fg=green}
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: ${HSMW_HIGHLIGHT_STYLES[precommand]:=fg=green}
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: ${HSMW_HIGHLIGHT_STYLES[commandseparator]:=none}
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: ${HSMW_HIGHLIGHT_STYLES[hashed-command]:=fg=green}
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: ${HSMW_HIGHLIGHT_STYLES[path]:=fg=magenta}
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: ${HSMW_HIGHLIGHT_STYLES[path_pathseparator]:=}
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: ${HSMW_HIGHLIGHT_STYLES[path_prefix]:=fg=magenta}
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: ${HSMW_HIGHLIGHT_STYLES[path_prefix_pathseparator]:=}
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: ${HSMW_HIGHLIGHT_STYLES[globbing]:=fg=blue,bold}
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: ${HSMW_HIGHLIGHT_STYLES[history-expansion]:=fg=blue,bold}
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: ${HSMW_HIGHLIGHT_STYLES[single-hyphen-option]:=none}
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: ${HSMW_HIGHLIGHT_STYLES[double-hyphen-option]:=none}
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: ${HSMW_HIGHLIGHT_STYLES[back-quoted-argument]:=none}
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: ${HSMW_HIGHLIGHT_STYLES[single-quoted-argument]:=fg=yellow}
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: ${HSMW_HIGHLIGHT_STYLES[double-quoted-argument]:=fg=yellow}
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: ${HSMW_HIGHLIGHT_STYLES[dollar-quoted-argument]:=fg=yellow}
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: ${HSMW_HIGHLIGHT_STYLES[dollar-double-quoted-argument]:=fg=cyan}
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: ${HSMW_HIGHLIGHT_STYLES[back-double-quoted-argument]:=fg=cyan}
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: ${HSMW_HIGHLIGHT_STYLES[back-dollar-quoted-argument]:=fg=cyan}
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: ${HSMW_HIGHLIGHT_STYLES[assign]:=none}
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: ${HSMW_HIGHLIGHT_STYLES[redirection]:=none}
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: ${HSMW_HIGHLIGHT_STYLES[comment]:=fg=black,bold}
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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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# Takes a single argument.
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#
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# The result will be stored in REPLY.
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-hsmw-highlight-main-type() {
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if (( $+__hsmw_highlight_main__command_type_cache )); then
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REPLY=$__hsmw_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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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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REPLY=alias
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elif (( $+saliases[(e)${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 $(x) below, incurring a fork. (Issue #354.)
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#
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# The second 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 ! (( $+REPLY )); then
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REPLY="${$(LC_ALL=C builtin type -w -- $1 2>/dev/null)#*: }"
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fi
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if (( $+__hsmw_highlight_main__command_type_cache )); then
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__hsmw_highlight_main__command_type_cache[(e)$1]=$REPLY
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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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-hsmw-highlight-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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[[ $1 == (<0-9>|)(\<|\>)* ]] && [[ $1 != (\<|\>)$'\x28'* ]]
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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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-hsmw-highlight-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: assignment to execute it if matches
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-hsmw-highlight-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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eval "$2"
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else
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style=unknown-token
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fi
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}
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# Main syntax highlighting function.
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-hsmw-highlight-process()
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{
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## Before we even 'emulate -L', we must test a few options that would reset.
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if [[ -o interactive_comments ]]; then
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local interactive_comments= # set to empty
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fi
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if [[ -o ignore_braces ]] || eval '[[ -o ignore_close_braces ]] 2>/dev/null'; 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 [[ -o path_dirs ]]; then
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integer path_dirs_was_set=1
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else
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integer path_dirs_was_set=0
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fi
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if [[ -o multi_func_def ]]; then
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integer multi_func_def=1
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else
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integer multi_func_def=0
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fi
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emulate -L zsh
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setopt localoptions extendedglob bareglobqual
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## Variable declarations and initializations
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local start_pos=0 end_pos highlight_glob=true arg style
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local in_array_assignment=false # true between 'a=(' and the matching ')'
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typeset -a __HSMW_HIGHLIGHT_TOKENS_COMMANDSEPARATOR
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typeset -a __HSMW_HIGHLIGHT_TOKENS_PRECOMMANDS
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typeset -a __HSMW_HIGHLIGHT_TOKENS_CONTROL_FLOW
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local -a options_to_set # used in callees
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local buf="$1"
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integer len="${#buf}"
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integer pure_buf_len=len # historical, was $#BUFFER, i.e. len without $PREBUFFER; used e.g. in *_check_path
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local braces_stack # "R" for round, "Q" for square, "Y" for curly
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if (( path_dirs_was_set )); then
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options_to_set+=( PATH_DIRS )
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fi
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unset path_dirs_was_set
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__HSMW_HIGHLIGHT_TOKENS_COMMANDSEPARATOR=(
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'|' '||' ';' '&' '&&'
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'|&'
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'&!' '&|'
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# ### 'case' syntax, but followed by a pattern, not by a command
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# ';;' ';&' ';|'
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)
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__HSMW_HIGHLIGHT_TOKENS_PRECOMMANDS=(
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'builtin' 'command' 'exec' 'nocorrect' 'noglob'
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'pkexec' # immune to #121 because it's usually not passed --option flags
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)
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# Tokens that, at (naively-determined) "command position", are followed by
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# a de jure command position. All of these are reserved words.
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__HSMW_HIGHLIGHT_TOKENS_CONTROL_FLOW=(
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$'\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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local -a match mbegin mend
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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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# - :sudo_opt: A leading-dash option to sudo (such as "-u" or "-i")
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# - :sudo_arg: The argument to a sudo leading-dash option that takes one,
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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
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# to the next iteration via $next_word/$this_word as usual, but via
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# $in_redirection. The value of $next_word from the iteration that processed
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# the operator is discarded.
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#
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local this_word=':start:' next_word
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integer in_redirection
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# Processing buffer
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local proc_buf="$buf"
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for arg in ${interactive_comments-${(z)buf}} \
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${interactive_comments+${(zZ+c+)buf}}; do
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# Initialize $next_word.
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if (( in_redirection )); then
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(( --in_redirection ))
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fi
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if (( in_redirection == 0 )); then
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# Initialize $next_word to its default value.
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next_word=':regular:'
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else
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# Stall $next_word.
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fi
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# Initialize per-"simple command" [zshmisc(1)] variables:
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#
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# $already_added (see next paragraph)
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# $style how to highlight $arg
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# $in_array_assignment boolean flag for "between '(' and ')' of array assignment"
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# $highlight_glob boolean flag for "'noglob' is in effect"
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#
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# $already_added is set to 1 to disable adding an entry to region_highlight
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# for this iteration. Currently, that is done for "" and $'' strings,
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# which add the entry early so escape sequences within the string override
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# the string's color.
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integer already_added=0
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style=unknown-token
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if [[ $this_word == *':start:'* ]]; then
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in_array_assignment=false
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if [[ $arg == 'noglob' ]]; then
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highlight_glob=false
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fi
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fi
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# Compute the new $start_pos and $end_pos, skipping over whitespace in $buf.
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if [[ $arg == ';' ]] ; then
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# We're looking for either a semicolon or a newline, whichever comes
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# first. Both of these are rendered as a ";" (SEPER) by the ${(z)..}
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# flag.
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#
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# We can't use the (Z+n+) flag because that elides the end-of-command
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# token altogether, so 'echo foo\necho bar' (two commands) becomes
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# indistinguishable from 'echo foo echo bar' (one command with three
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# words for arguments).
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local needle=$'[;\n]'
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integer offset=$(( ${proc_buf[(i)$needle]} - 1 ))
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(( start_pos += offset ))
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(( end_pos = start_pos + $#arg ))
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else
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# The line was:
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#
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# integer offset=$(((len-start_pos)-${#${proc_buf##([[:space:]]|\\[[:space:]])#}}))
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#
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# - len-start_pos is length of current proc_buf; basically: initial length minus where
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# we are, and proc_buf is chopped to the "where we are" (compare the "previous value
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# of start_pos" below, and the len-(start_pos-offset) = len-start_pos+offset)
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# - what's after main minus sign is: length of proc_buf without spaces at the beginning
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# - so what the line actually did, was computing length of the spaces!
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# - this can be done via (#b) flag, like below
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if [[ "$proc_buf" = (#b)(#s)(([[:space:]]|\\[[:space:]])##)* ]]; then
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# The first, outer parenthesis
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integer offset="${#match[1]}"
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else
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integer offset=0
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fi
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((start_pos+=offset))
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((end_pos=$start_pos+${#arg}))
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fi
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# Compute the new $proc_buf. We advance it
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# (chop off characters from the beginning)
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# beyond what end_pos points to, by skipping
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# as many characters as end_pos was advanced.
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#
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# end_pos was advanced by $offset (via start_pos)
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# and by $#arg. Note the `start_pos=$end_pos`
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# below.
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#
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# As for the [,len]. We could use [,len-start_pos+offset]
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# here, but to make it easier on eyes, we use len and
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# rely on the fact that Zsh simply handles that. The
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# length of proc_buf is len-start_pos+offset because
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# we're chopping it to match current start_pos, so its
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# length matches the previous value of start_pos.
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#
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# Why [,-1] is slower than [,length] isn't clear.
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proc_buf="${proc_buf[offset + $#arg + 1,len]}"
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# Handle the INTERACTIVE_COMMENTS option.
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#
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# We use the (Z+c+) flag so the entire comment is presented as one token in $arg.
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if [[ -n ${interactive_comments+'set'} && $arg[1] == $histchars[3] ]]; then
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if [[ $this_word == *(':regular:'|':start:')* ]]; then
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style=comment
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else
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style=unknown-token # prematurely terminated
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fi
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-hsmw-add-highlight $start_pos $end_pos $style
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already_added=1
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continue
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fi
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# Analyse the current word.
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if -hsmw-highlight-is-redirection $arg ; then
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# A '<' or '>', possibly followed by a digit
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in_redirection=2
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fi
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# Special-case the first word after 'sudo'.
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if (( ! in_redirection )); then
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if [[ $this_word == *':sudo_opt:'* ]] && [[ $arg != -* ]]; then
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this_word=${this_word//:sudo_opt:/}
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fi
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fi
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# Parse the sudo command line
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if (( ! in_redirection )); then
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if [[ $this_word == *':sudo_opt:'* ]]; then
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case "$arg" in
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# Flag that requires an argument
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'-'[Cgprtu]) this_word=${this_word//:start:/};
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next_word=':sudo_arg:';;
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# This prevents misbehavior with sudo -u -otherargument
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'-'*) this_word=${this_word//:start:/};
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next_word+=':start:';
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next_word+=':sudo_opt:';;
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*) ;;
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esac
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elif [[ $this_word == *':sudo_arg:'* ]]; then
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next_word+=':sudo_opt:'
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next_word+=':start:'
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fi
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fi
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# The Great Fork: is this a command word? Is this a non-command word?
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if [[ $this_word == *':always:'* && $arg == 'always' ]]; then
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# try-always construct
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style=reserved-word # de facto a reserved word, although not de jure
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next_word=':start:'
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elif [[ $this_word == *':start:'* ]] && (( in_redirection == 0 )); then # $arg is the command word
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if [[ -n ${(M)__HSMW_HIGHLIGHT_TOKENS_PRECOMMANDS:#"$arg"} ]]; then
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style=precommand
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elif [[ "$arg" = "sudo" ]]; then
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style=precommand
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next_word=${next_word//:regular:/}
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next_word+=':sudo_opt:'
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next_word+=':start:'
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else
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-hsmw-highlight-expand-path $arg
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local expanded_arg="$REPLY"
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-hsmw-highlight-main-type ${expanded_arg}
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local res="$REPLY"
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() {
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# Special-case: command word is '$foo', like that, without braces or anything.
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#
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# That's not entirely correct --- if the parameter's value happens to be a reserved
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# word, the parameter expansion will be highlighted as a reserved word --- but that
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# incorrectness is outweighed by the usability improvement of permitting the use of
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# parameters that refer to commands, functions, and builtins.
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local -a match mbegin mend
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local MATCH; integer MBEGIN MEND
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if [[ $res == none ]] && (( ${+parameters} )) &&
|
|
[[ ${arg[1]} == \$ ]] && [[ ${arg:1} = ([[:alpha:]_][[:alnum:]_]#|[[:digit:]]##) ]] &&
|
|
(( ${+parameters[${MATCH}]} ))
|
|
then
|
|
-hsmw-highlight-main-type ${(P)MATCH}
|
|
res=$REPLY
|
|
fi
|
|
}
|
|
case $res in
|
|
reserved) # reserved word
|
|
style=reserved-word
|
|
if [[ $arg == $'\x7b' ]]; then
|
|
braces_stack='Y'"$braces_stack"
|
|
elif [[ $arg == $'\x7d' ]]; then
|
|
# We're at command word, so no need to check $right_brace_is_recognised_everywhere
|
|
-hsmw-highlight-stack-pop 'Y' style=reserved-word
|
|
if [[ $style == reserved-word ]]; then
|
|
next_word+=':always:'
|
|
fi
|
|
fi
|
|
;;
|
|
'suffix alias') style=suffix-alias;;
|
|
alias) () {
|
|
integer insane_alias
|
|
case $arg in
|
|
# Issue #263: aliases with '=' on their LHS.
|
|
#
|
|
# There are three cases:
|
|
#
|
|
# - Unsupported, breaks 'alias -L' output, but invokable:
|
|
('='*) :;;
|
|
# - Unsupported, not invokable:
|
|
(*'='*) insane_alias=1;;
|
|
# - The common case:
|
|
(*) :;;
|
|
esac
|
|
if (( insane_alias )); then
|
|
style=unknown-token
|
|
else
|
|
style=alias
|
|
-hsmw-highlight-resolve-alias $arg
|
|
local alias_target="$REPLY"
|
|
[[ -n ${(M)__HSMW_HIGHLIGHT_TOKENS_PRECOMMANDS:#"$alias_target"} && -z ${(M)__HSMW_HIGHLIGHT_TOKENS_PRECOMMANDS:#"$arg"} ]] && __HSMW_HIGHLIGHT_TOKENS_PRECOMMANDS+=($arg)
|
|
fi
|
|
}
|
|
;;
|
|
builtin) style=builtin;;
|
|
function) style=function;;
|
|
command) style=command;;
|
|
hashed) style=hashed-command;;
|
|
none) if -hsmw-highlight-check-assign; then
|
|
style=assign
|
|
if [[ $arg[-1] == '(' ]]; then
|
|
in_array_assignment=true
|
|
else
|
|
# assignment to a scalar parameter.
|
|
# (For array assignments, the command doesn't start until the ")" token.)
|
|
next_word+=':start:'
|
|
fi
|
|
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 [[ -n ${(M)__HSMW_HIGHLIGHT_TOKENS_COMMANDSEPARATOR:#"$arg"} ]]; then
|
|
if [[ $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
|
|
elif (( in_redirection == 2 )); then
|
|
style=redirection
|
|
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.
|
|
style=reserved-word
|
|
-hsmw-add-highlight $start_pos $((start_pos + 2)) $style
|
|
already_added=1
|
|
if [[ $arg[-2,-1] == '))' ]]; then
|
|
-hsmw-add-highlight $((end_pos - 2)) $end_pos $style
|
|
already_added=1
|
|
fi
|
|
elif [[ $arg == '()' ]]; then
|
|
# anonymous function
|
|
style=reserved-word
|
|
elif [[ $arg == $'\x28' ]]; then
|
|
# subshell
|
|
style=reserved-word
|
|
braces_stack='R'"$braces_stack"
|
|
else
|
|
if -hsmw-highlight-check-path; then
|
|
style=$REPLY
|
|
else
|
|
style=unknown-token
|
|
fi
|
|
fi
|
|
;;
|
|
*) -hsmw-add-highlight $start_pos $end_pos commandtypefromthefuture-$res
|
|
already_added=1
|
|
;;
|
|
esac
|
|
fi
|
|
fi
|
|
if (( ! already_added )) && [[ $style == unknown-token ]] && # not handled by the 'command word' codepath
|
|
{ (( in_redirection )) || [[ $this_word == *':regular:'* ]] || [[ $this_word == *':sudo_opt:'* ]] || [[ $this_word == *':sudo_arg:'* ]] }
|
|
then # $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:'
|
|
else
|
|
-hsmw-highlight-stack-pop 'R' style=reserved-word
|
|
fi;;
|
|
$'\x28\x29') # possibly a function definition
|
|
if (( multi_func_def )) || false # TODO: or if the previous word was a command word
|
|
then
|
|
next_word+=':start:'
|
|
fi
|
|
style=reserved-word
|
|
;;
|
|
$'\x7d') # right brace
|
|
#
|
|
# 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 $right_brace_is_recognised_everywhere; then
|
|
-hsmw-highlight-stack-pop 'Y' style=reserved-word
|
|
if [[ $style == reserved-word ]]; then
|
|
next_word+=':always:'
|
|
fi
|
|
else
|
|
# Fall through to the catchall case at the end.
|
|
fi
|
|
;|
|
|
'--'*) style=double-hyphen-option;;
|
|
'-'*) style=single-hyphen-option;;
|
|
"'"*) style=single-quoted-argument;;
|
|
'"'*) style=double-quoted-argument
|
|
-hsmw-add-highlight $start_pos $end_pos $style
|
|
-hsmw-highlight-string
|
|
already_added=1
|
|
;;
|
|
\$\'*) style=dollar-quoted-argument
|
|
-hsmw-add-highlight $start_pos $end_pos $style
|
|
-hsmw-highlight-dollar-string
|
|
already_added=1
|
|
;;
|
|
'`'*) style=back-quoted-argument;;
|
|
[*?]*|*[^\\][*?]*)
|
|
$highlight_glob && style=globbing || style=default;;
|
|
*) if false; then
|
|
elif [[ $arg = $'\x7d' ]] && $right_brace_is_recognised_everywhere; then
|
|
# was handled by the $'\x7d' case above
|
|
elif [[ $arg[0,1] = $histchars[0,1] ]] && (( $#arg[0,2] == 2 )); then
|
|
style=history-expansion
|
|
elif [[ -n ${(M)__HSMW_HIGHLIGHT_TOKENS_COMMANDSEPARATOR:#"$arg"} ]]; then
|
|
if [[ $this_word == *':regular:'* ]]; then
|
|
style=commandseparator
|
|
else
|
|
style=unknown-token
|
|
fi
|
|
elif (( in_redirection == 2 )); then
|
|
style=redirection
|
|
else
|
|
if -hsmw-highlight-check-path; then
|
|
style=$REPLY
|
|
else
|
|
style=default
|
|
fi
|
|
fi
|
|
;;
|
|
esac
|
|
fi
|
|
if ! (( already_added )); then
|
|
-hsmw-add-highlight $start_pos $end_pos $style
|
|
[[ $style == path || $style == path_prefix ]] && -hsmw-highlight-path-separators
|
|
fi
|
|
if [[ -n ${(M)__HSMW_HIGHLIGHT_TOKENS_COMMANDSEPARATOR:#"$arg"} ]]; then
|
|
if [[ $arg == ';' ]] && $in_array_assignment; then
|
|
# literal newline inside an array assignment
|
|
next_word=':regular:'
|
|
else
|
|
next_word=':start:'
|
|
highlight_glob=true
|
|
fi
|
|
elif
|
|
[[ -n ${(M)__HSMW_HIGHLIGHT_TOKENS_CONTROL_FLOW:#"$arg"} && $this_word == *':start:'* ]] ||
|
|
[[ -n ${(M)__HSMW_HIGHLIGHT_TOKENS_PRECOMMANDS:#"$arg"} && $this_word == *':start:'* ]]; then
|
|
next_word=':start:'
|
|
elif [[ $arg == "repeat" && $this_word == *':start:'* ]]; then
|
|
# skip the repeat-count word
|
|
in_redirection=2
|
|
# The redirection mechanism assumes $this_word describes the word
|
|
# following the redirection. Make it so.
|
|
#
|
|
# That word can be a command word with shortloops (`repeat 2 ls`)
|
|
# or a command separator (`repeat 2; ls` or `repeat 2; do ls; done`).
|
|
#
|
|
# The repeat-count word will be handled like a redirection target.
|
|
this_word=':start::regular:'
|
|
fi
|
|
start_pos=$end_pos
|
|
if (( in_redirection == 0 )); then
|
|
# This is the default/common codepath.
|
|
this_word=$next_word
|
|
else
|
|
# Stall $this_word.
|
|
fi
|
|
done
|
|
}
|
|
|
|
# Check if $arg is variable assignment
|
|
-hsmw-highlight-check-assign()
|
|
{
|
|
setopt localoptions extended_glob
|
|
[[ $arg == [[:alpha:]_][[:alnum:]_]#(|\[*\])(|[+])=* ]] ||
|
|
[[ $arg == [0-9]##(|[+])=* ]]
|
|
}
|
|
|
|
-hsmw-highlight-path-separators()
|
|
{
|
|
local pos style_pathsep
|
|
style_pathsep=${style}_pathseparator
|
|
[[ -z "$HSMW_HIGHLIGHT_STYLES[$style_pathsep]" || "$HSMW_HIGHLIGHT_STYLES[$style]" == "$HSMW_HIGHLIGHT_STYLES[$style_pathsep]" ]] && return 0
|
|
for (( pos = start_pos; $pos <= end_pos; pos++ )) ; do
|
|
if [[ ${buf[pos]} == "/" ]]; then
|
|
-hsmw-add-highlight $((pos - 1)) $pos $style_pathsep
|
|
fi
|
|
done
|
|
}
|
|
|
|
# Check if $arg 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).
|
|
-hsmw-highlight-check-path()
|
|
{
|
|
-hsmw-highlight-expand-path $arg;
|
|
local expanded_path="$REPLY"
|
|
|
|
REPLY=path
|
|
|
|
[[ -z $expanded_path ]] && return 1
|
|
[[ -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/$expanded_path" ]] && return 0
|
|
done
|
|
|
|
# If dirname($arg) doesn't exist, neither does $arg.
|
|
[[ ! -d ${expanded_path:h} ]] && return 1
|
|
|
|
# If this word ends the buffer, check if it's the prefix of a valid path.
|
|
if [[ ${buf[1]} != "-" && $pure_buf_len == $end_pos ]]; then
|
|
local -a tmp
|
|
tmp=( ${expanded_path}*(N) )
|
|
(( $#tmp > 0 )) && REPLY=path_prefix && return 0
|
|
fi
|
|
|
|
# It's not a path.
|
|
return 1
|
|
}
|
|
|
|
# Highlight special chars inside double-quoted strings
|
|
-hsmw-highlight-string()
|
|
{
|
|
setopt localoptions noksharrays
|
|
local -a match mbegin mend
|
|
local MATCH; integer MBEGIN MEND
|
|
local i j k style
|
|
# Starting quote is at 1, so start parsing at offset 2 in the string.
|
|
for (( i = 2 ; i < end_pos - start_pos ; i += 1 )) ; do
|
|
(( j = i + start_pos - 1 ))
|
|
(( k = j + 1 ))
|
|
case "$arg[$i]" in
|
|
'$' ) style=dollar-double-quoted-argument
|
|
# Look for an alphanumeric parameter name.
|
|
if [[ ${arg:$i} = ([[:alpha:]_][[:alnum:]_]#|[[:digit:]]##) ]] ; then
|
|
(( k += $#MATCH )) # highlight the parameter name
|
|
(( i += $#MATCH )) # skip past it
|
|
elif [[ ${arg:$i} = [{]([[:alpha:]_][[:alnum:]_]#|[[:digit:]]##)[}]* ]] ; then
|
|
(( k += $#MATCH )) # highlight the parameter name and braces
|
|
(( i += $#MATCH )) # skip past it
|
|
else
|
|
continue
|
|
fi
|
|
;;
|
|
"\\") style=back-double-quoted-argument
|
|
if [[ \\\`\"\$ == *$arg[$i+1]* ]]; then
|
|
(( k += 1 )) # Color following char too.
|
|
(( i += 1 )) # Skip parsing the escaped char.
|
|
else
|
|
continue
|
|
fi
|
|
;;
|
|
*) continue ;;
|
|
|
|
esac
|
|
-hsmw-add-highlight $j $k $style
|
|
done
|
|
}
|
|
|
|
# Highlight special chars inside dollar-quoted strings
|
|
-hsmw-highlight-dollar-string()
|
|
{
|
|
setopt localoptions noksharrays
|
|
local -a match mbegin mend
|
|
local MATCH; integer MBEGIN MEND
|
|
local i j k style
|
|
local AA
|
|
integer c
|
|
# Starting dollar-quote is at 1:2, so start parsing at offset 3 in the string.
|
|
for (( i = 3 ; i < end_pos - start_pos ; i += 1 )) ; do
|
|
(( j = i + start_pos - 1 ))
|
|
(( k = j + 1 ))
|
|
case "$arg[$i]" in
|
|
"\\") style=back-dollar-quoted-argument
|
|
for (( c = i + 1 ; c <= end_pos - start_pos ; c += 1 )); do
|
|
[[ "$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
|
|
-hsmw-add-highlight $j $k $style
|
|
done
|
|
}
|
|
|
|
# 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).
|
|
-hsmw-highlight-expand-path()
|
|
{
|
|
(( $# == 1 )) || print -r -- >&2 "hsmw-highlight: BUG: -hsmw-highlight-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
|
|
# -------------------------------------------------------------------------------------------------
|
|
|
|
-hsmw-highlight-init() {
|
|
__hsmw_highlight_main__command_type_cache=()
|
|
}
|
|
|
|
-hsmw-add-highlight()
|
|
{
|
|
local -i start end
|
|
local highlight
|
|
start=$1
|
|
end=$2
|
|
shift 2
|
|
for highlight; do
|
|
if (( $+HSMW_HIGHLIGHT_STYLES[$highlight] )); then
|
|
reply+=("$start $end $HSMW_HIGHLIGHT_STYLES[$highlight]")
|
|
break
|
|
fi
|
|
done
|
|
}
|
|
|
|
__HSMW_MH_SOURCED=1
|
|
|
|
# vim:ft=zsh
|