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history-search-multi-word/hsmw-highlight
Sebastian Gniazdowski bf306203f9 *highlight: Optimization and slowdown – short path for actual new lines 
parse.zsh ./to-parse.zsh changes.out, before changes:

Running time: 2.2866420000
num  calls                time                       self            name
-----------------------------------------------------------------------------------
 1)    1        2286,16  2286,16  100,00%   2131,92  2131,92   93,25%  -hsmw-highlight-process
 2) 1270         133,34     0,10    5,83%    133,34     0,10    5,83%  -hsmw-highlight-main-type
 3)  395          12,09     0,03    0,53%     12,09     0,03    0,53%  -hsmw-highlight-check-path
 4)   22           5,48     0,25    0,24%      5,48     0,25    0,24%  -hsmw-highlight-string
 5)    6           2,36     0,39    0,10%      2,36     0,39    0,10%  -hsmw-highlight-dollar-string
 6)   46           0,97     0,02    0,04%      0,97     0,02    0,04%  -hsmw-highlight-stack-pop
 7)    1           0,07     0,07    0,00%      0,07     0,07    0,00%  -hsmw-highlight-fill-option-variables
 8)    1           0,01     0,01    0,00%      0,01     0,01    0,00%  -hsmw-highlight-init

parse.zsh ./to-parse.zsh changes.out, after changes:

Running time: 2.1237140000
num  calls                time                       self            name
-----------------------------------------------------------------------------------
 1)    1        2123,18  2123,18  100,00%   1979,84  1979,84   93,25%  -hsmw-highlight-process
 2)  755         122,09     0,16    5,75%    122,09     0,16    5,75%  -hsmw-highlight-main-type
 3)  395          13,66     0,03    0,64%     13,66     0,03    0,64%  -hsmw-highlight-check-path
 4)   22           4,46     0,20    0,21%      4,46     0,20    0,21%  -hsmw-highlight-string
 5)    6           2,04     0,34    0,10%      2,04     0,34    0,10%  -hsmw-highlight-dollar-string
 6)   46           1,10     0,02    0,05%      1,10     0,02    0,05%  -hsmw-highlight-stack-pop
 7)    1           0,07     0,07    0,00%      0,07     0,07    0,00%  -hsmw-highlight-fill-option-variables
 8)    1           0,01     0,01    0,00%      0,01     0,01    0,00%  -hsmw-highlight-init

./parse.zsh -oo, after changes:

Running time: 1.5936520000
num  calls                time                       self            name
-----------------------------------------------------------------------------------
 1)  350        1586,12     4,53   99,99%   1222,20     3,49   77,05%  -hsmw-highlight-process
 2) 2800         288,42     0,10   18,18%    288,42     0,10   18,18%  -hsmw-highlight-string
 3) 1750          40,57     0,02    2,56%     40,57     0,02    2,56%  -hsmw-highlight-check-path
 4) 1400          24,97     0,02    1,57%     24,97     0,02    1,57%  -hsmw-highlight-main-type
 5)  350           9,96     0,03    0,63%      9,96     0,03    0,63%  -hsmw-highlight-stack-pop
 6)    1           0,07     0,07    0,00%      0,07     0,07    0,00%  -hsmw-highlight-fill-option-variables
 7)    1           0,01     0,01    0,00%      0,01     0,01    0,00%  -hsmw-highlight-init
2016-10-31 13:36:55 +01:00

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# -------------------------------------------------------------------------------------------------
# Copyright (c) 2010-2016 zsh-syntax-highlighting contributors
# Copyright (c) 2016 Sebastian Gniazdowski (modifications)
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are permitted
# provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this list of conditions
# and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice, this list of
# conditions and the following disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
# may be used to endorse or promote products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# -------------------------------------------------------------------------------------------------
# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
# vim: ft=zsh sw=2 ts=2 et
# -------------------------------------------------------------------------------------------------
typeset -gA __hsmw_highlight_main__command_type_cache
# Define default styles.
typeset -gA HSMW_HIGHLIGHT_STYLES
: ${HSMW_HIGHLIGHT_STYLES[default]:=none}
: ${HSMW_HIGHLIGHT_STYLES[unknown-token]:=fg=red,bold}
: ${HSMW_HIGHLIGHT_STYLES[reserved-word]:=fg=yellow}
: ${HSMW_HIGHLIGHT_STYLES[alias]:=fg=green}
: ${HSMW_HIGHLIGHT_STYLES[suffix-alias]:=fg=green}
: ${HSMW_HIGHLIGHT_STYLES[builtin]:=fg=green}
: ${HSMW_HIGHLIGHT_STYLES[function]:=fg=green}
: ${HSMW_HIGHLIGHT_STYLES[command]:=fg=green}
: ${HSMW_HIGHLIGHT_STYLES[precommand]:=fg=green}
: ${HSMW_HIGHLIGHT_STYLES[commandseparator]:=none}
: ${HSMW_HIGHLIGHT_STYLES[hashed-command]:=fg=green}
: ${HSMW_HIGHLIGHT_STYLES[path]:=fg=magenta}
: ${HSMW_HIGHLIGHT_STYLES[path_pathseparator]:=}
: ${HSMW_HIGHLIGHT_STYLES[globbing]:=fg=blue,bold}
: ${HSMW_HIGHLIGHT_STYLES[history-expansion]:=fg=blue,bold}
: ${HSMW_HIGHLIGHT_STYLES[single-hyphen-option]:=none}
: ${HSMW_HIGHLIGHT_STYLES[double-hyphen-option]:=none}
: ${HSMW_HIGHLIGHT_STYLES[back-quoted-argument]:=none}
: ${HSMW_HIGHLIGHT_STYLES[single-quoted-argument]:=fg=yellow}
: ${HSMW_HIGHLIGHT_STYLES[double-quoted-argument]:=fg=yellow}
: ${HSMW_HIGHLIGHT_STYLES[dollar-quoted-argument]:=fg=yellow}
: ${HSMW_HIGHLIGHT_STYLES[back-or-dollar-double-quoted-argument]:=fg=cyan}
: ${HSMW_HIGHLIGHT_STYLES[back-dollar-quoted-argument]:=fg=cyan}
: ${HSMW_HIGHLIGHT_STYLES[assign]:=none}
: ${HSMW_HIGHLIGHT_STYLES[redirection]:=none}
: ${HSMW_HIGHLIGHT_STYLES[comment]:=fg=black,bold}
typeset -gA __HSMW_HIGHLIGHT_TOKENS_TYPES
__HSMW_HIGHLIGHT_TOKENS_TYPES=(
# Precommand
'builtin' 1
'command' 1
'exec' 1
'nocorrect' 1
'noglob' 1
'pkexec' 1 # immune to #121 because it's usually not passed --option flags
# Control flow
# Tokens that, at (naively-determined) "command position", are followed by
# a de jure command position. All of these are reserved words.
$'\x7b' 2 # block
$'\x28' 2 # subshell
'()' 2 # anonymous function
'while' 2
'until' 2
'if' 2
'then' 2
'elif' 2
'else' 2
'do' 2
'time' 2
'coproc' 2
'!' 2 # reserved word; unrelated to $histchars[1]
# Command separators
'|' 3
'||' 3
';' 3
'&' 3
'&&' 3
'|&' 3
'&!' 3
'&|' 3
# ### 'case' syntax, but followed by a pattern, not by a command
# ';;' ';&' ';|'
)
# Get the type of a command.
#
# Uses the zsh/parameter module if available to avoid forks, and a
# wrapper around 'type -w' as fallback.
#
# Takes a single argument.
#
# The result will be stored in REPLY.
-hsmw-highlight-main-type() {
REPLY=$__hsmw_highlight_main__command_type_cache[(e)$1]
[[ -n "$REPLY" ]] && return
if zmodload -e zsh/parameter; then
if (( $+commands[(e)$1] )); then
REPLY=command
elif (( $+builtins[(e)$1] )); then
REPLY=builtin
elif (( $+aliases[(e)$1] )); then
REPLY=alias
elif (( $+functions[(e)$1] )); then
REPLY=function
elif (( $+saliases[(e)${1##*.}] )); then
REPLY='suffix alias'
elif (( $reswords[(Ie)$1] )); then
REPLY=reserved
# zsh 5.2 and older have a bug whereby running 'type -w ./sudo' implicitly
# runs 'hash ./sudo=/usr/local/bin/./sudo' (assuming /usr/local/bin/sudo
# exists and is in $PATH). Avoid triggering the bug, at the expense of
# falling through to the $() below, incurring a fork. (Issue #354.)
#
# The second disjunct mimics the isrelative() C call from the zsh bug.
elif [[ $1 != */* || "${+ZSH_ARGZERO}" = "1" ]] && ! builtin type -w -- $1 >/dev/null 2>&1; then
REPLY=none
fi
fi
[[ -z "$REPLY" ]] && REPLY="${$(LC_ALL=C builtin type -w -- $1 2>/dev/null)##*: }"
__hsmw_highlight_main__command_type_cache[(e)$1]=$REPLY
}
# Resolve alias.
#
# Takes a single argument.
#
# The result will be stored in REPLY.
-hsmw-highlight-resolve-alias() {
if zmodload -e zsh/parameter; then
REPLY=${aliases[$arg]}
else
REPLY="${"$(alias -- $arg)"#*=}"
fi
}
# Check that the top of $braces_stack has the expected value. If it does, set
# the style according to $2; otherwise, set style=unknown-token.
#
# $1: character expected to be at the top of $braces_stack
# $2: assignment to execute it if matches
-hsmw-highlight-stack-pop() {
if [[ $braces_stack[1] == $1 ]]; then
braces_stack=${braces_stack:1}
eval "$2"
else
style=unknown-token
fi
}
# Below are variables that must be defined in outer
# scope so that they are reachable in *-process()
#
# local right_brace_is_recognised_everywhere
# integer path_dirs_was_set
# integer multi_func_def
# integer ointeractive_comments
-hsmw-highlight-fill-option-variables() {
if [[ -o ignore_braces ]] || eval '[[ -o ignore_close_braces ]] 2>/dev/null'; then
right_brace_is_recognised_everywhere=0
else
right_brace_is_recognised_everywhere=1
fi
if [[ -o path_dirs ]]; then
path_dirs_was_set=1
else
path_dirs_was_set=0
fi
if [[ -o multi_func_def ]]; then
multi_func_def=1
else
multi_func_def=0
fi
if [[ -o interactive_comments ]]; then
ointeractive_comments=1
else
ointeractive_comments=0
fi
}
# Main syntax highlighting function.
-hsmw-highlight-process()
{
emulate -L zsh
setopt extendedglob bareglobqual nonomatch noksharrays
(( path_dirs_was_set )) && setopt PATH_DIRS
(( ointeractive_comments )) && local interactive_comments= # _set_ to empty
# Variable declarations and initializations
# in_array_assignment true between 'a=(' and the matching ')'
# braces_stack: "R" for round, "Q" for square, "Y" for curly
# mybuf, cdpath_dir are used in sub-functions
local start_pos=0 end_pos highlight_glob=1 arg style in_array_assignment=0 MATCH expanded_path braces_stack buf="$1" mybuf cdpath_dir cur_cmd
# arg_type can be 0, 1, 2 or 3, i.e. precommand, control flow, command separator
# idx and end_idx are used in sub-functions
# for this_word and next_word look below at commented integers and at state machine description
integer arg_type=0 MBEGIN MEND in_redirection len=${#buf} already_added offset idx end_idx this_word=1 next_word=0
local -a match mbegin mend
# integer BIT_start=1 BIT_regular=2 BIT_sudo_opt=4 BIT_sudo_arg=8 BIT_always=16
# State machine
#
# The states are:
# - :start: Command word
# - :sudo_opt: A leading-dash option to sudo (such as "-u" or "-i")
# - :sudo_arg: The argument to a sudo leading-dash option that takes one,
# when given as a separate word; i.e., "foo" in "-u foo" (two
# words) but not in "-ufoo" (one word).
# - :regular: "Not a command word", and command delimiters are permitted.
# Mainly used to detect premature termination of commands.
# - :always: The word 'always' in the «{ foo } always { bar }» syntax.
#
# When the kind of a word is not yet known, $this_word / $next_word may contain
# multiple states. For example, after "sudo -i", the next word may be either
# another --flag or a command name, hence the state would include both :start:
# and :sudo_opt:.
#
# The tokens are always added with both leading and trailing colons to serve as
# word delimiters (an improvised array); [[ $x == *:foo:* ]] and x=${x//:foo:/}
# will DTRT regardless of how many elements or repetitions $x has..
#
# Handling of redirections: upon seeing a redirection token, we must stall
# the current state --- that is, the value of $this_word --- for two iterations
# (one for the redirection operator, one for the word following it representing
# the redirection target). Therefore, we set $in_redirection to 2 upon seeing a
# redirection operator, decrement it each iteration, and stall the current state
# when it is non-zero. Thus, upon reaching the next word (the one that follows
# the redirection operator and target), $this_word will still contain values
# appropriate for the word immediately following the word that preceded the
# redirection operator.
#
# 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 $next_word from the iteration that processed
# the operator is discarded.
#
# Processing buffer
local proc_buf="$buf" needle
for arg in ${interactive_comments-${(z)buf}} \
${interactive_comments+${(zZ+c+)buf}}; do
# Initialize $next_word to its default value?
(( in_redirection )) && (( --in_redirection ))
(( in_redirection == 0 )) && next_word=2 # else Stall $next_word.
# Initialize per-"simple command" [zshmisc(1)] variables:
#
# $already_added (see next paragraph)
# $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"
#
# $already_added is set to 1 to disable adding an entry to region_highlight
# for this iteration. Currently, that is done for "" and $'' strings,
# which add the entry early so escape sequences within the string override
# the string's color.
already_added=0
style=unknown-token
if (( this_word & 1 )); then
in_array_assignment=0
[[ $arg == 'noglob' ]] && highlight_glob=0
fi
# Compute the new $start_pos and $end_pos, skipping over whitespace in $buf.
if [[ $arg == ';' ]] ; then
# We're looking for either a semicolon or a newline, whichever comes
# first. Both of these are rendered as a ";" (SEPER) by the ${(z)..}
# flag.
#
# We can't use the (Z+n+) flag because that elides the end-of-command
# token altogether, so 'echo foo\necho bar' (two commands) becomes
# indistinguishable from 'echo foo echo bar' (one command with three
# words for arguments).
needle=$'[;\n]'
offset=$(( ${proc_buf[(i)$needle]} - 1 ))
(( start_pos += offset ))
(( end_pos = start_pos + $#arg ))
# Do not run default code for case when there is a new line
# It shouldn't be treated as ';', i.e. shouldn't be highlighted
# as unknown-token when appears after command-starting arg like "{"
if [[ "${proc_buf[offset+1]}" = $'\n' ]]; then
(( in_array_assignment )) && (( this_word = 2 )) || { (( this_word = 1 )); highlight_glob=1; }
in_redirection=0
proc_buf="${proc_buf[offset + $#arg + 1,len]}"
start_pos=$end_pos
continue
fi
arg_type=3
else
offset=0
if [[ "$proc_buf" = (#b)(#s)(([[:space:]]|\\[[:space:]])##)* ]]; then
# The first, outer parenthesis
offset="${mend[1]}"
fi
((start_pos+=offset))
((end_pos=start_pos+${#arg}))
# No-hit will result in value 0
arg_type=${__HSMW_HIGHLIGHT_TOKENS_TYPES[$arg]}
fi
proc_buf="${proc_buf[offset + $#arg + 1,len]}"
# Handle the INTERACTIVE_COMMENTS option.
#
# We use the (Z+c+) flag so the entire comment is presented as one token in $arg.
if [[ -n ${interactive_comments+'set'} && $arg[1] == $histchars[3] ]]; then
if (( this_word & 3 )); then
style=comment
else
style=unknown-token # prematurely terminated
fi
# ADD
reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[$style]}")
continue
fi
# Analyse the current word.
if [[ $arg == (<0-9>|)(\<|\>)* ]] && [[ $arg != (\<|\>)$'\x28'* ]]; then
# A '<' or '>', possibly followed by a digit
in_redirection=2
fi
# Special-case the first word after 'sudo'.
if (( ! in_redirection )); then
if (( this_word & 4 )) && [[ $arg != -* ]]; then
(( this_word = this_word ^ 4 ))
fi
# Parse the sudo command line
if (( this_word & 4 )); then
case "$arg" in
# Flag that requires an argument
'-'[Cgprtu])
(( this_word & 1 )) && (( this_word = this_word ^ 1 ))
(( next_word = 8 ))
;;
# This prevents misbehavior with sudo -u -otherargument
'-'*)
(( this_word & 1 )) && (( this_word = this_word ^ 1 ))
(( next_word = next_word | 1 ))
(( next_word = next_word | 4 ))
;;
*) ;;
esac
elif (( this_word & 8 )); then
(( next_word = next_word | 4 ))
(( next_word = next_word | 1 ))
fi
fi
expanded_path=""
# The Great Fork: is this a command word? Is this a non-command word?
if (( this_word & 16 )) && [[ $arg == 'always' ]]; then
# try-always construct
style=reserved-word # de facto a reserved word, although not de jure
(( next_word = 1 ))
elif (( this_word & 1 )) && (( in_redirection == 0 )); then # $arg is the command word
cur_cmd="$arg"
if (( arg_type == 1 )); then
style=precommand
elif [[ "$arg" = "sudo" ]]; then
style=precommand
(( next_word & 2 )) && (( next_word = next_word ^ 2 ))
(( next_word = next_word | 4 ))
(( next_word = next_word | 1 ))
else
# Special-case: command word is '$foo', like that, without braces or anything.
#
# 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.
if [[ ${arg[1]} == \$ ]] && (( ${+parameters} )) && [[ ${arg:1} = (#m)([a-zA-Z_][a-zA-Z0-9_]#|[0-9]##) ]] && (( ${+parameters[${MATCH}]} )); then
-hsmw-highlight-main-type ${(P)MATCH}
else
: ${expanded_path::=${(Q)~arg}}
-hsmw-highlight-main-type $expanded_path
fi
case $REPLY 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
[[ $style == "reserved-word" ]] && (( next_word = next_word | 16 ))
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"
[[ ${__HSMW_HIGHLIGHT_TOKENS_TYPES[$alias_target]} = "1" && "$arg_type" != "1" ]] && __HSMW_HIGHLIGHT_TOKENS_TYPES[$arg]="1"
fi
}
;;
builtin) style=builtin;;
function) style=function;;
command) style=command;;
hashed) style=hashed-command;;
none) # Assign?
if [[ $arg == [[:alpha:]_][[:alnum:]_]#(|\[[^\]]#\])(|[+])=* ]] || [[ $arg == [0-9]##(|[+])=* ]]; then
style=assign
# Assignment to a scalar parameter or to array
# (For array assignments, the command doesn't start until the ")" token.)
[[ $arg[-1] == '(' ]] && in_array_assignment=1 || (( next_word = next_word | 1 ))
elif [[ $arg[1] = $histchars[1] && -n "${arg[2]}" ]]; then
style=history-expansion
elif [[ $arg[1] == $histchars[2] ]]; then
style=history-expansion
elif (( arg_type == 3 )); then
# This highlights empty commands (semicolon follows nothing) as an error.
# Zsh accepts them, though.
(( this_word & 2 )) && style=commandseparator
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 ${(z)...}
# splitter would only output the '((' token if the matching '))' had
# been typed. Therefore, under those versions of zsh, BUFFER="(( 42"
# would be highlighted as an error until the matching "))" are typed.
#
# We highlight just the opening parentheses, as a reserved word; this
# is how [[ ... ]] is highlighted, too.
# ADD
reply+=("$start_pos $(( start_pos + 2 )) ${HSMW_HIGHLIGHT_STYLES[reserved-word]}")
already_added=1
# ADD
[[ $arg[-2,-1] == '))' ]] && reply+=("$(( end_pos - 2 )) $end_pos ${HSMW_HIGHLIGHT_STYLES[reserved-word]}")
elif [[ $arg == '()' ]]; then
# anonymous function
style=reserved-word
elif [[ $arg == $'\x28' ]]; then
# subshell
style=reserved-word
braces_stack='R'"$braces_stack"
elif (( this_word & 14 )); then
style=default
fi
;;
*)
# ADD
# reply+=("$start_pos $end_pos commandtypefromthefuture-$REPLY")
already_added=1
;;
esac
fi
# in_redirection || BIT_regular || BIT_sudo_opt || BIT_sudo_arg
elif (( in_redirection + this_word & 14 ))
then # $arg is a non-command word
case $arg in
']]')
style=reserved-word
;;
$'\x29') # subshell or end of array assignment
if (( in_array_assignment )); then
style=assign
in_array_assignment=0
(( next_word = next_word | 1 ))
else
-hsmw-highlight-stack-pop 'R' style=reserved-word
fi;;
$'\x28\x29') # possibly a function definition
# || false # TODO: or if the previous word was a command word
(( multi_func_def )) && (( next_word = next_word | 1 ))
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
[[ $style == reserved-word ]] && (( next_word = next_word | 16 ))
#else
# Fall through to the catchall case at the end.
fi
;|
'--'*) style=double-hyphen-option;;
'-'*) style=single-hyphen-option;;
"'"*) style=single-quoted-argument;;
'"'*)
# ADD
reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[double-quoted-argument]}")
-hsmw-highlight-string
already_added=1
;;
\$\'*)
# ADD
reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[dollar-quoted-argument]}")
-hsmw-highlight-dollar-string
already_added=1
;;
'`'*) style=back-quoted-argument;;
[*?]*|*[^\\][*?]*)
(( highlight_glob )) && style=globbing || style=default;;
*) if [[ $arg = $'\x7d' ]] && (( right_brace_is_recognised_everywhere )); then
# was handled by the $'\x7d' case above
elif [[ $arg[1] = $histchars[1] && -n "${arg[2]}" ]]; then
style=history-expansion
elif (( arg_type == 3 )); then
style=commandseparator
elif (( in_redirection == 2 )); then
style=redirection
else
if -hsmw-highlight-check-path; then
# ADD
reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[path]}")
already_added=1
[[ -n "$HSMW_HIGHLIGHT_STYLES[path_pathseparator]" && "$HSMW_HIGHLIGHT_STYLES[path]" != "$HSMW_HIGHLIGHT_STYLES[path_pathseparator]" ]] && {
local pos
for (( pos = start_pos; pos <= end_pos; pos++ )) ; do
# ADD
[[ ${buf[pos]} == "/" ]] && reply+=("$(( pos - 1 )) $pos ${HSMW_HIGHLIGHT_STYLES[path_pathseparator]}")
done
}
else
style=default
fi
fi
;;
esac
fi
# ADD
(( already_added == 0 )) && [[ "${HSMW_HIGHLIGHT_STYLES[$style]}" != "none" ]] && reply+=("$start_pos $end_pos ${HSMW_HIGHLIGHT_STYLES[$style]}")
if (( arg_type == 3 )); then
if [[ $arg == ';' ]] && (( in_array_assignment )); then
# literal newline inside an array assignment
(( next_word = 2 ))
else
(( next_word = 1 ))
highlight_glob=1
fi
elif (( arg_type == 1 || arg_type == 2 )) && (( this_word & 1 )); then
(( next_word = 1 ))
elif [[ $arg == "repeat" ]] && (( this_word & 1 )); then
# skip the repeat-count word
in_redirection=2
# The redirection mechanism assumes $this_word describes the word
# following the redirection. Make it so.
#
# That word can be a command word with shortloops (`repeat 2 ls`)
# or a command separator (`repeat 2; ls` or `repeat 2; do ls; done`).
#
# The repeat-count word will be handled like a redirection target.
(( this_word = 3 ))
fi
start_pos=$end_pos
# This is the default/common codepath.
(( in_redirection == 0 )) && (( this_word = next_word )) #else # Stall $this_word.
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()
{
: ${expanded_path:=${(Q)~arg}}
[[ -z $expanded_path ]] && return 1
[[ -e $expanded_path ]] && return 0
# Search the path in CDPATH, only for CD command
[[ "$cur_cmd" = "cd" ]] && for cdpath_dir in $cdpath ; do
[[ -e "$cdpath_dir/$expanded_path" ]] && return 0
done
# It's not a path.
return 1
}
# Highlight special chars inside double-quoted strings
-hsmw-highlight-string()
{
mybuf="$arg"
idx=start_pos
while [[ "$mybuf" = (#b)[^\$\\]#((\$[a-zA-Z0-9_:]##(\[[^\]]#\])(#c0,1))|(\$[{](\([a-zA-Z0@%#]##\))(#c0,1)[a-zA-Z0-9_:#]##(\[[^\]]#\])(#c0,1)[}])|[\\][\'\"\$]|[\\](*))(*) ]]; do
[[ -n "${match[7]}" ]] && {
idx+=${mbegin[1]}
mybuf="${match[7]}"
} || {
idx+=${mbegin[1]}-1
end_idx=idx+${mend[1]}-${mbegin[1]}+1
mybuf="${match[8]}"
# ADD
reply+=("$idx $end_idx ${HSMW_HIGHLIGHT_STYLES[back-or-dollar-double-quoted-argument]}")
idx=end_idx
}
done
}
# Highlight special chars inside dollar-quoted strings
-hsmw-highlight-dollar-string()
{
local i j k style
local AA
integer c
# Starting dollar-quote is at 1:2, so start parsing at offset 3 in the string.
for (( i = 3 ; i < end_pos - start_pos ; i += 1 )) ; do
(( j = i + start_pos - 1 ))
(( k = j + 1 ))
case "$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
# ADD
reply+=("$j $k ${HSMW_HIGHLIGHT_STYLES[$style]}")
done
}
# -------------------------------------------------------------------------------------------------
# Main highlighter initialization
# -------------------------------------------------------------------------------------------------
-hsmw-highlight-init() {
__hsmw_highlight_main__command_type_cache=()
}
__HSMW_MH_SOURCED=1
# vim:ft=zsh:sw=2
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