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#!/bin/sh
# SHIN v. 0/1
# Copyright (C) Case Duckworth <acdw@acdw.net>
# Licensed under the Fair License. See COPYING for details.
_shin() {
awk 'BEGIN {
if (ENVIRON["SHINPATH"]) split(ENVIRON["SHINPATH"], SHINPATH, ":")
else SHINPATH[1] = "."
}
FNR == 1 { outfile = FILENAME; sub(/in$/, "", outfile) }
{ print($0) > outfile }
/^#</ {
inclfile = shin_resolve(substr($0, 3))
while ((getline l < inclfile) > 0) print(l) > outfile
close(inclfile)
sub(/</, ">", $0)
print > outfile
}
function shin_test(filename) {
if (! system("test -f \"" f "\"")) return filename
print("Cannot find \"" filename "\" in " sp) > (STDERR ? STDERR : "/dev/stderr")
exit 1
}
function shin_resolve(filename) {
if (match(filename, "^/")) return shin_test(filename)
if (match(filename, "^~")) return shin_test(ENVIRON["HOME"] "/" substr(filename, 2))
sub(/^[ \t]*/, "", filename)
sub(/[ \t]*$/, "", filename)
sp = ""
for (p in SHINPATH) {
sp = sp (sp ? ", " : "") "\"" SHINPATH[p] "\""
f = SHINPATH[p] "/" filename
gsub("//", "/", f)
return shin_test(f)
}
}'
}
if [ "x$1" = -h ]; then
cat <<\EOF
SHIN: include shell files in other shell files
USAGE: shin [-h] FILE...
FLAGS:
-h Show this help and exit.
PARAMETERS:
FILE... Input files. FILEs named FILE.shin will be built to
FILE.sh in the same directory. To include files in
shin files, use the following comment syntax:
#< INCLUDE
If INCLUDE begins with / or ~, it's taken as a literal
file name; otherwise SHINPATH will be searched for the
file. SHINPATH is a colon-separated list of paths
like $PATH. If SHINPATH is unset, it defaults to the
current directory.
If INCLUDE is not found, shin will error and quit.
Otherwise, shin will add INCLUDE below that comment,
as well as a comment denoting the end of the INCLUDE.
EOF
else
_shin "$@"
fi
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