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#!/bin/sh
### make-info-dir - create info/dir, for systems without install-info
## Copyright (C) 2013-2021 Free Software Foundation, Inc.
## Author: Glenn Morris <rgm@gnu.org>
## Maintainer: emacs-devel@gnu.org
## This file is part of GNU Emacs.
## GNU Emacs is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
## GNU Emacs is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
## You should have received a copy of the GNU General Public License
## along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
### Commentary:
## Generate info/dir, for systems without install-info.
## Expects to be called from top-level Emacs source directory.
## It only handles the case where info/dir is missing from the
## installation directory. It does not handle info/dir being present
## but missing some entries.
## Header contains non-printing characters, so this is more
## reliable than using awk.
cat <"${1?}" || exit
shift
exec "${AWK-awk}" '
function detexinfo() {
gsub(/@value{emacsname}/, "Emacs")
gsub(/@[^{]*\{/, "")
gsub(/}/, "")
}
BEGIN {
ntopics = 0
topic[ntopics++] = "Texinfo documentation system"
topic[ntopics++] = "Emacs"
topic[ntopics++] = "Emacs lisp"
topic[ntopics++] = "Emacs editing modes"
topic[ntopics++] = "Emacs network features"
topic[ntopics++] = "Emacs misc features"
topic[ntopics++] = "Emacs lisp libraries"
topic[ntopics] = "Unknown category"
texinfo = 0
}
/^@dircategory / {
texinfo = 1
sub(/^@dircategory /, "")
detexinfo()
for (dircat = 0; dircat < ntopics && topic[dircat] != $0; dircat++)
continue;
}
/^@direntry/, /^@end direntry/ {
# FIXME do not ignore w32 if OS is w32.
if ($0 !~ /^@/ && $0 !~ /w32/) {
detexinfo()
data[dircat] = data[dircat] $0 "\n"
}
}
## Org stuff. TODO we assume the order of the texinfo items.
{
## TODO Check FILENAME suffix instead?
## TODO Is this portable awk?
if (FNR == 1) texinfo = 0
## If applied to the generated org.texi file, this picks up the examples.
## Thanks for making life more difficult...
if (texinfo) next
if (tolower($0) ~ /^#\+texinfo_dir_category/) {
sub(/^#[^:]*: /, "")
for (dircat = 0; dircat < ntopics && topic[dircat] != $0; dircat++)
continue;
}
if (tolower($0) ~ /^#\+texinfo_dir_title/) {
sub(/^#[^:]*: /, "")
## Note this does not fill any long descriptions.
data[dircat] = data[dircat] sprintf("* %-30s", ($0 ". "))
}
if (tolower($0) ~ /^#\+texinfo_dir_desc/) {
sub(/^#[^:]*: /, "")
data[dircat] = data[dircat] $0 ".\n"
}
}
END {
for (dircat = 0; dircat <= ntopics; dircat++)
if (data[dircat])
printf "\n%s\n%s", topic[dircat], data[dircat]
}
' "${@?}"
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