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# -*- mode: sh; sh-indentation: 4; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# Almost all code borrowed from Zshell's _make function
#
# Copyright (c) 2018 Sebastian Gniazdowski
local -a TARGETS
.make-expandVars() {
local open close var val front='' rest=$1
while [[ $rest == (#b)[^$]#($)* ]]; do
front=$front${rest[1,$mbegin[1]-1]}
rest=${rest[$mbegin[1],-1]}
case $rest[2] in
($) # '$$'. may not appear in target and variable's value
front=$front\$\$
rest=${rest[3,-1]}
continue
;;
(\() # Variable of the form $(foobar)
open='('
close=')'
;;
({) # ${foobar}
open='{'
close='}'
;;
([[:alpha:]]) # $foobar. This is exactly $(f)oobar.
open=''
close=''
var=$rest[2]
;;
(*) # bad parameter name
print -- $front$rest
return 1
;;
esac
if [[ -n $open ]]; then
if [[ $rest == \$$open(#b)([[:alnum:]_]##)(#B)$close* ]]; then
var=$match
else # unmatched () or {}, or bad parameter name
print -- $front$rest
return 1
fi
fi
val=''
if [[ -n ${VAR_ARGS[(i)$var]} ]]; then
val=${VAR_ARGS[$var]}
else
if [[ -n $opt_args[(I)(-e|--environment-overrides)] ]]; then
if [[ $parameters[$var] == scalar-export* ]]; then
val=${(P)var}
elif [[ -n ${VARIABLES[(i)$var]} ]]; then
val=${VARIABLES[$var]}
fi
else
if [[ -n ${VARIABLES[(i)$var]} ]]; then
val=${VARIABLES[$var]}
elif [[ $parameters[$var] == scalar-export* ]]; then
val=${(P)var}
fi
fi
fi
rest=${rest//\$$open$var$close/$val}
done
print -- ${front}${rest}
}
.make-parseMakefile () {
local input var val target dep TAB=$'\t' tmp IFS=
while read input
do
case "$input " in
# TARGET: dependencies
# TARGET1 TARGET2 TARGET3: dependencies
([[*?[:alnum:]$][^$TAB:=%]#:[^=]*)
target=$(.make-expandVars ${input%%:*})
TARGETS+=( ${(z)target} )
;;
esac
done
}
# Cache generated parsing for 1sec per session or globally if configured, per Makefile path.
if [[ -n "${FAST_HIGHLIGHT[chroma-make-cache-global]}" ]]; then
# Determine Makefile path.
# TODO: find a way to expand path and resolve alias - this cause deduplicated cache file.
local makefile_path
makefile_path=${FAST_HIGHLIGHT[chroma-make-custom-dir]%/}/${FAST_HIGHLIGHT[chroma-make-custom-file]}
# If not absolute, resolve to absolute path
[[ $makefile_path != /* ]] && makefile_path="$PWD/$makefile_path"
# Generate a safe hash for the cache file name using sha1sum
local makefile_hash
makefile_hash=$(print -n -- "$makefile_path" | sha1sum | awk '{print $1}')
# Generate a sha1sum hash from the input variable
local input var val target dep TAB=$'\t' tmp IFS=
local input_hash
input_hash=$(print -n -- "$input" | sha1sum | awk '{print $1}')
# Generate the cache file path.
local cache_file
cache_file="/tmp/fast-highlight-make-cache-${makefile_hash}-${input_hash}"
if [[ ! -f $cache_file ]]; then
# Clean up old cache files.
rm -rf /tmp/fast-highlight-make-cache-${makefile_hash}-*
# Generate new cache file.
.make-parseMakefile "$input"
print -r -- "${(j:;:)TARGETS}" >| "$cache_file"
fi
FAST_HIGHLIGHT[chroma-make-cache]="$(<$cache_file)"
FAST_HIGHLIGHT[chroma-make-cache-born-at]="0"
else
if [[ -z "${FAST_HIGHLIGHT[chroma-make-cache]}" || $(( EPOCHSECONDS - FAST_HIGHLIGHT[chroma-make-cache-born-at] )) -gt 7 ]]; then
.make-parseMakefile
FAST_HIGHLIGHT[chroma-make-cache-born-at]="$EPOCHSECONDS"
FAST_HIGHLIGHT[chroma-make-cache]="${(j:;:)TARGETS}"
fi
fi
reply2=( "${(s:;:)FAST_HIGHLIGHT[chroma-make-cache]}" )
# vim:ft=zsh:et
|
