ac14eff506
in grotty(1). This makes it possible to view colorized manpages in color. When MANPAGER environment variable is set, use it instead of PAGER. Why another environment variable, one might ask? With color output enabled, both a terminal and a pager should support the ANSI color escapes. On a supporting terminal, less(1) with option -R would be such a pager, while "more -s" (the current default pager for man(1)) will show garbage. It means a different default pager is needed when color output is enabled, but many people have PAGER set customary, and it's unlikely to support ANSI color escapes, so introducing yet another variable (MANPAGER) seemed like a good option to me: - if MANPAGER is set, use that unconditionally; - if you disable color support (it is by default), and don't set MANPAGER, you get an old behavior: -P pager, $PAGER, "more -s", in that order; - if you enable color support (by setting MANCOLOR), and don't set MANPAGER, we ignore PAGER which is unlikely to support ANSI color escapes, and you get: -P pager, "less -Rs", in that order; - you might have good reasons for different man(1) and general purpose pagers; - later versions of GNU man(1) support MANPAGER.
966 lines
20 KiB
Bash
Executable File
966 lines
20 KiB
Bash
Executable File
#! /bin/sh
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#
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# Copyright (c) 2010 Gordon Tetlow
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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
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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# Usage: add_to_manpath path
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# Adds a variable to manpath while ensuring we don't have duplicates.
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# Returns true if we were able to add something. False otherwise.
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add_to_manpath() {
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case "$manpath" in
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*:$1) decho " Skipping duplicate manpath entry $1" 2 ;;
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$1:*) decho " Skipping duplicate manpath entry $1" 2 ;;
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*:$1:*) decho " Skipping duplicate manpath entry $1" 2 ;;
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*) if [ -d "$1" ]; then
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decho " Adding $1 to manpath"
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manpath="$manpath:$1"
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return 0
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fi
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;;
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esac
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return 1
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}
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# Usage: build_manlocales
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# Builds a correct MANLOCALES variable.
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build_manlocales() {
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# If the user has set manlocales, who are we to argue.
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if [ -n "$MANLOCALES" ]; then
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return
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fi
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parse_configs
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# Trim leading colon
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MANLOCALES=${manlocales#:}
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decho "Available manual locales: $MANLOCALES"
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}
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# Usage: build_manpath
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# Builds a correct MANPATH variable.
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build_manpath() {
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local IFS
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# If the user has set a manpath, who are we to argue.
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if [ -n "$MANPATH" ]; then
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return
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fi
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search_path
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decho "Adding default manpath entries"
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IFS=:
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for path in $man_default_path; do
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add_to_manpath "$path"
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done
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unset IFS
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parse_configs
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# Trim leading colon
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MANPATH=${manpath#:}
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decho "Using manual path: $MANPATH"
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}
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# Usage: check_cat catglob
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# Checks to see if a cat glob is available.
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check_cat() {
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if exists "$1"; then
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use_cat=yes
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catpage=$found
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setup_cattool $catpage
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decho " Found catpage $catpage"
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return 0
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else
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return 1
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fi
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}
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# Usage: check_man manglob catglob
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# Given 2 globs, figures out if the manglob is available, if so, check to
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# see if the catglob is also available and up to date.
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check_man() {
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if exists "$1"; then
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# We have a match, check for a cat page
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manpage=$found
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setup_cattool $manpage
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decho " Found manpage $manpage"
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if [ -n "${use_width}" ]; then
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# non-standard width
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unset use_cat
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decho " Skipping catpage: non-standard page width"
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elif exists "$2" && is_newer $found $manpage; then
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# cat page found and is newer, use that
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use_cat=yes
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catpage=$found
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setup_cattool $catpage
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decho " Using catpage $catpage"
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else
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# no cat page or is older
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unset use_cat
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decho " Skipping catpage: not found or old"
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fi
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return 0
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fi
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return 1
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}
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# Usage: decho "string" [debuglevel]
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# Echoes to stderr string prefaced with -- if high enough debuglevel.
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decho() {
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if [ $debug -ge ${2:-1} ]; then
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echo "-- $1" >&2
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fi
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}
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# Usage: exists glob
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# Returns true if glob resolves to a real file.
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exists() {
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local IFS
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# Don't accidentally inherit callers IFS (breaks perl manpages)
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unset IFS
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# Use some globbing tricks in the shell to determine if a file
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# exists or not.
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set +f
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set -- "$1" $1
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set -f
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if [ "$1" != "$2" -a -r "$2" ]; then
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found="$2"
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return 0
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fi
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return 1
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}
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# Usage: find_file path section subdir pagename
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# Returns: true if something is matched and found.
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# Search the given path/section combo for a given page.
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find_file() {
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local manroot catroot mann man0 catn cat0
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manroot="$1/man$2"
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catroot="$1/cat$2"
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if [ -n "$3" ]; then
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manroot="$manroot/$3"
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catroot="$catroot/$3"
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fi
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if [ ! -d "$manroot" ]; then
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return 1
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fi
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decho " Searching directory $manroot" 2
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mann="$manroot/$4.$2*"
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man0="$manroot/$4.0*"
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catn="$catroot/$4.$2*"
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cat0="$catroot/$4.0*"
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# This is the behavior as seen by the original man utility.
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# Let's not change that which doesn't seem broken.
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if check_man "$mann" "$catn"; then
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return 0
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elif check_man "$man0" "$cat0"; then
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return 0
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elif check_cat "$catn"; then
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return 0
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elif check_cat "$cat0"; then
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return 0
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fi
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return 1
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}
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# Usage: is_newer file1 file2
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# Returns true if file1 is newer than file2 as calculated by mtime.
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is_newer() {
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if ! [ "$1" -ot "$2" ]; then
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decho " mtime: $1 not older than $2" 3
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return 0
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else
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decho " mtime: $1 older than $2" 3
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return 1
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fi
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}
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# Usage: manpath_parse_args "$@"
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# Parses commandline options for manpath.
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manpath_parse_args() {
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local cmd_arg
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while getopts 'Ldq' cmd_arg; do
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case "${cmd_arg}" in
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L) Lflag=Lflag ;;
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d) debug=$(( $debug + 1 )) ;;
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q) qflag=qflag ;;
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*) manpath_usage ;;
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esac
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done >&2
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}
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# Usage: manpath_usage
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# Display usage for the manpath(1) utility.
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manpath_usage() {
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echo 'usage: manpath [-Ldq]' >&2
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exit 1
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}
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|
|
# Usage: manpath_warnings
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|
# Display some warnings to stderr.
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|
manpath_warnings() {
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if [ -z "$Lflag" -a -n "$MANPATH" ]; then
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echo "(Warning: MANPATH environment variable set)" >&2
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fi
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|
if [ -n "$Lflag" -a -n "$MANLOCALES" ]; then
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|
echo "(Warning: MANLOCALES environment variable set)" >&2
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|
fi
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}
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|
|
# Usage: man_check_for_so page path
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|
# Returns: True if able to resolve the file, false if it ended in tears.
|
|
# Detects the presence of the .so directive and causes the file to be
|
|
# redirected to another source file.
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man_check_for_so() {
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local IFS line tstr
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|
unset IFS
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# We need to loop to accommodate multiple .so directives.
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while true
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do
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line=$($cattool $manpage | head -1)
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case "$line" in
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.so*) trim "${line#.so}"
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decho "$manpage includes $tstr"
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# Glob and check for the file.
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|
if ! check_man "$path/$tstr*" ""; then
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decho " Unable to find $tstr"
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return 1
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fi
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;;
|
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*) break ;;
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esac
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|
done
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|
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return 0
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}
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|
|
# Usage: man_display_page
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|
# Display either the manpage or catpage depending on the use_cat variable
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|
man_display_page() {
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local EQN NROFF PIC TBL TROFF REFER VGRIND
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local IFS l nroff_dev pipeline preproc_arg tool
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|
|
# We are called with IFS set to colon. This causes really weird
|
|
# things to happen for the variables that have spaces in them.
|
|
unset IFS
|
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|
|
# If we are supposed to use a catpage and we aren't using troff(1)
|
|
# just zcat the catpage and we are done.
|
|
if [ -z "$tflag" -a -n "$use_cat" ]; then
|
|
if [ -n "$wflag" ]; then
|
|
echo "$catpage (source: $manpage)"
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|
ret=0
|
|
else
|
|
if [ $debug -gt 0 ]; then
|
|
decho "Command: $cattool $catpage | $MANPAGER"
|
|
ret=0
|
|
else
|
|
eval "$cattool $catpage | $MANPAGER"
|
|
ret=$?
|
|
fi
|
|
fi
|
|
return
|
|
fi
|
|
|
|
# Okay, we are using the manpage, do we just need to output the
|
|
# name of the manpage?
|
|
if [ -n "$wflag" ]; then
|
|
echo "$manpage"
|
|
ret=0
|
|
return
|
|
fi
|
|
|
|
# So, we really do need to parse the manpage. First, figure out the
|
|
# device flag (-T) we have to pass to eqn(1) and groff(1). Then,
|
|
# setup the pipeline of commands based on the user's request.
|
|
|
|
# If the manpage is from a particular charset, we need to setup nroff
|
|
# to properly output for the correct device.
|
|
case "${manpage}" in
|
|
*.${man_charset}/*)
|
|
# I don't pretend to know this; I'm just copying from the
|
|
# previous version of man(1).
|
|
case "$man_charset" in
|
|
KOI8-R) nroff_dev="koi8-r" ;;
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|
ISO8859-1) nroff_dev="latin1" ;;
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|
ISO8859-15) nroff_dev="latin1" ;;
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|
UTF-8) nroff_dev="utf8" ;;
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|
*) nroff_dev="ascii" ;;
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|
esac
|
|
|
|
NROFF="$NROFF -T$nroff_dev"
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|
EQN="$EQN -T$nroff_dev"
|
|
|
|
# Iff the manpage is from the locale and not just the charset,
|
|
# then we need to define the locale string.
|
|
case "${manpage}" in
|
|
*/${man_lang}_${man_country}.${man_charset}/*)
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|
NROFF="$NROFF -dlocale=$man_lang.$man_charset"
|
|
;;
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|
*/${man_lang}.${man_charset}/*)
|
|
NROFF="$NROFF -dlocale=$man_lang.$man_charset"
|
|
;;
|
|
esac
|
|
|
|
# Allow language specific calls to override the default
|
|
# set of utilities.
|
|
l=$(echo $man_lang | tr [:lower:] [:upper:])
|
|
for tool in EQN NROFF PIC TBL TROFF REFER VGRIND; do
|
|
eval "$tool=\${${tool}_$l:-\$$tool}"
|
|
done
|
|
;;
|
|
*) NROFF="$NROFF -Tascii"
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|
EQN="$EQN -Tascii"
|
|
;;
|
|
esac
|
|
|
|
if [ -z "$MANCOLOR" ]; then
|
|
NROFF="$NROFF -P-c"
|
|
fi
|
|
|
|
if [ -n "${use_width}" ]; then
|
|
NROFF="$NROFF -rLL=${use_width}n -rLT=${use_width}n"
|
|
fi
|
|
|
|
if [ -n "$MANROFFSEQ" ]; then
|
|
set -- -$MANROFFSEQ
|
|
while getopts 'egprtv' preproc_arg; do
|
|
case "${preproc_arg}" in
|
|
e) pipeline="$pipeline | $EQN" ;;
|
|
g) ;; # Ignore for compatability.
|
|
p) pipeline="$pipeline | $PIC" ;;
|
|
r) pipeline="$pipeline | $REFER" ;;
|
|
t) pipeline="$pipeline | $TBL" ;;
|
|
v) pipeline="$pipeline | $VGRIND" ;;
|
|
*) usage ;;
|
|
esac
|
|
done
|
|
# Strip the leading " | " from the resulting pipeline.
|
|
pipeline="${pipeline#" | "}"
|
|
else
|
|
pipeline="$TBL"
|
|
fi
|
|
|
|
if [ -n "$tflag" ]; then
|
|
pipeline="$pipeline | $TROFF"
|
|
else
|
|
pipeline="$pipeline | $NROFF | $MANPAGER"
|
|
fi
|
|
|
|
if [ $debug -gt 0 ]; then
|
|
decho "Command: $cattool $manpage | $pipeline"
|
|
ret=0
|
|
else
|
|
eval "$cattool $manpage | $pipeline"
|
|
ret=$?
|
|
fi
|
|
}
|
|
|
|
# Usage: man_find_and_display page
|
|
# Search through the manpaths looking for the given page.
|
|
man_find_and_display() {
|
|
local found_page locpath p path sect
|
|
|
|
# Check to see if it's a file. But only if it has a '/' in
|
|
# the filename.
|
|
case "$1" in
|
|
*/*) if [ -f "$1" -a -r "$1" ]; then
|
|
decho "Found a usable page, displaying that"
|
|
unset use_cat
|
|
manpage="$1"
|
|
setup_cattool $manpage
|
|
if man_check_for_so $manpage $(dirname $manpage); then
|
|
found_page=yes
|
|
man_display_page
|
|
fi
|
|
return
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
IFS=:
|
|
for sect in $MANSECT; do
|
|
decho "Searching section $sect" 2
|
|
for path in $MANPATH; do
|
|
for locpath in $locpaths; do
|
|
p=$path/$locpath
|
|
p=${p%/.} # Rid ourselves of the trailing /.
|
|
|
|
# Check if there is a MACHINE specific manpath.
|
|
if find_file $p $sect $MACHINE "$1"; then
|
|
if man_check_for_so $manpage $p; then
|
|
found_page=yes
|
|
man_display_page
|
|
if [ -n "$aflag" ]; then
|
|
continue 2
|
|
else
|
|
return
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
# Check if there is a MACHINE_ARCH
|
|
# specific manpath.
|
|
if find_file $p $sect $MACHINE_ARCH "$1"; then
|
|
if man_check_for_so $manpage $p; then
|
|
found_page=yes
|
|
man_display_page
|
|
if [ -n "$aflag" ]; then
|
|
continue 2
|
|
else
|
|
return
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
# Check plain old manpath.
|
|
if find_file $p $sect '' "$1"; then
|
|
if man_check_for_so $manpage $p; then
|
|
found_page=yes
|
|
man_display_page
|
|
if [ -n "$aflag" ]; then
|
|
continue 2
|
|
else
|
|
return
|
|
fi
|
|
fi
|
|
fi
|
|
done
|
|
done
|
|
done
|
|
unset IFS
|
|
|
|
# Nothing? Well, we are done then.
|
|
if [ -z "$found_page" ]; then
|
|
echo "No manual entry for $1" >&2
|
|
ret=1
|
|
return
|
|
fi
|
|
}
|
|
|
|
# Usage: man_parse_args "$@"
|
|
# Parses commandline options for man.
|
|
man_parse_args() {
|
|
local IFS cmd_arg
|
|
|
|
while getopts 'M:P:S:adfhkm:op:tw' cmd_arg; do
|
|
case "${cmd_arg}" in
|
|
M) MANPATH=$OPTARG ;;
|
|
P) MANPAGER=$OPTARG ;;
|
|
S) MANSECT=$OPTARG ;;
|
|
a) aflag=aflag ;;
|
|
d) debug=$(( $debug + 1 )) ;;
|
|
f) fflag=fflag ;;
|
|
h) man_usage 0 ;;
|
|
k) kflag=kflag ;;
|
|
m) mflag=$OPTARG ;;
|
|
o) oflag=oflag ;;
|
|
p) MANROFFSEQ=$OPTARG ;;
|
|
t) tflag=tflag ;;
|
|
w) wflag=wflag ;;
|
|
*) man_usage ;;
|
|
esac
|
|
done >&2
|
|
|
|
shift $(( $OPTIND - 1 ))
|
|
|
|
# Check the args for incompatible options.
|
|
case "${fflag}${kflag}${tflag}${wflag}" in
|
|
fflagkflag*) echo "Incompatible options: -f and -k"; man_usage ;;
|
|
fflag*tflag*) echo "Incompatible options: -f and -t"; man_usage ;;
|
|
fflag*wflag) echo "Incompatible options: -f and -w"; man_usage ;;
|
|
*kflagtflag*) echo "Incompatible options: -k and -t"; man_usage ;;
|
|
*kflag*wflag) echo "Incompatible options: -k and -w"; man_usage ;;
|
|
*tflagwflag) echo "Incompatible options: -t and -w"; man_usage ;;
|
|
esac
|
|
|
|
# Short circuit for whatis(1) and apropos(1)
|
|
if [ -n "$fflag" ]; then
|
|
do_whatis "$@"
|
|
exit
|
|
fi
|
|
|
|
if [ -n "$kflag" ]; then
|
|
do_apropos "$@"
|
|
exit
|
|
fi
|
|
|
|
IFS=:
|
|
for sect in $man_default_sections; do
|
|
if [ "$sect" = "$1" ]; then
|
|
decho "Detected manual section as first arg: $1"
|
|
MANSECT="$1"
|
|
shift
|
|
break
|
|
fi
|
|
done
|
|
unset IFS
|
|
|
|
pages="$*"
|
|
}
|
|
|
|
# Usage: man_setup
|
|
# Setup various trivial but essential variables.
|
|
man_setup() {
|
|
# Setup machine and architecture variables.
|
|
if [ -n "$mflag" ]; then
|
|
MACHINE_ARCH=${mflag%%:*}
|
|
MACHINE=${mflag##*:}
|
|
fi
|
|
if [ -z "$MACHINE_ARCH" ]; then
|
|
MACHINE_ARCH=$($SYSCTL -n hw.machine_arch)
|
|
fi
|
|
if [ -z "$MACHINE" ]; then
|
|
MACHINE=$($SYSCTL -n hw.machine)
|
|
fi
|
|
decho "Using architecture: $MACHINE_ARCH:$MACHINE"
|
|
|
|
setup_pager
|
|
|
|
# Setup manual sections to search.
|
|
if [ -z "$MANSECT" ]; then
|
|
MANSECT=$man_default_sections
|
|
fi
|
|
decho "Using manual sections: $MANSECT"
|
|
|
|
build_manpath
|
|
man_setup_locale
|
|
man_setup_width
|
|
}
|
|
|
|
# Usage: man_setup_width
|
|
# Set up page width.
|
|
man_setup_width() {
|
|
local sizes
|
|
|
|
unset use_width
|
|
case "$MANWIDTH" in
|
|
[0-9]*)
|
|
if [ "$MANWIDTH" -gt 0 2>/dev/null ]; then
|
|
use_width=$MANWIDTH
|
|
fi
|
|
;;
|
|
[Tt][Tt][Yy])
|
|
if { sizes=$($STTY size 0>&3 2>/dev/null); } 3>&1; then
|
|
set -- $sizes
|
|
if [ $2 -gt 80 ]; then
|
|
use_width=$(($2-2))
|
|
fi
|
|
fi
|
|
;;
|
|
esac
|
|
if [ -n "$use_width" ]; then
|
|
decho "Using non-standard page width: ${use_width}"
|
|
else
|
|
decho 'Using standard page width'
|
|
fi
|
|
}
|
|
|
|
# Usage: man_setup_locale
|
|
# Setup necessary locale variables.
|
|
man_setup_locale() {
|
|
local lang_cc
|
|
|
|
locpaths='.'
|
|
man_charset='US-ASCII'
|
|
|
|
# Setup locale information.
|
|
if [ -n "$oflag" ]; then
|
|
decho 'Using non-localized manpages'
|
|
else
|
|
# Use the locale tool to give us the proper LC_CTYPE
|
|
eval $( $LOCALE )
|
|
|
|
case "$LC_CTYPE" in
|
|
C) ;;
|
|
POSIX) ;;
|
|
[a-z][a-z]_[A-Z][A-Z]\.*)
|
|
lang_cc="${LC_CTYPE%.*}"
|
|
man_lang="${LC_CTYPE%_*}"
|
|
man_country="${lang_cc#*_}"
|
|
man_charset="${LC_CTYPE#*.}"
|
|
locpaths="$LC_CTYPE"
|
|
locpaths="$locpaths:$man_lang.$man_charset"
|
|
if [ "$man_lang" != "en" ]; then
|
|
locpaths="$locpaths:en.$man_charset"
|
|
fi
|
|
locpaths="$locpaths:."
|
|
;;
|
|
*) echo 'Unknown locale, assuming C' >&2
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
decho "Using locale paths: $locpaths"
|
|
}
|
|
|
|
# Usage: man_usage [exitcode]
|
|
# Display usage for the man utility.
|
|
man_usage() {
|
|
echo 'Usage:'
|
|
echo ' man [-adho] [-t | -w] [-M manpath] [-P pager] [-S mansect]'
|
|
echo ' [-m arch[:machine]] [-p [eprtv]] [mansect] page [...]'
|
|
echo ' man -f page [...] -- Emulates whatis(1)'
|
|
echo ' man -k page [...] -- Emulates apropos(1)'
|
|
|
|
# When exit'ing with -h, it's not an error.
|
|
exit ${1:-1}
|
|
}
|
|
|
|
# Usage: parse_configs
|
|
# Reads the end-user adjustable config files.
|
|
parse_configs() {
|
|
local IFS file files
|
|
|
|
if [ -n "$parsed_configs" ]; then
|
|
return
|
|
fi
|
|
|
|
unset IFS
|
|
|
|
# Read the global config first in case the user wants
|
|
# to override config_local.
|
|
if [ -r "$config_global" ]; then
|
|
parse_file "$config_global"
|
|
fi
|
|
|
|
# Glob the list of files to parse.
|
|
set +f
|
|
files=$(echo $config_local)
|
|
set -f
|
|
|
|
for file in $files; do
|
|
if [ -r "$file" ]; then
|
|
parse_file "$file"
|
|
fi
|
|
done
|
|
|
|
parsed_configs='yes'
|
|
}
|
|
|
|
# Usage: parse_file file
|
|
# Reads the specified config files.
|
|
parse_file() {
|
|
local file line tstr var
|
|
|
|
file="$1"
|
|
decho "Parsing config file: $file"
|
|
while read line; do
|
|
decho " $line" 2
|
|
case "$line" in
|
|
\#*) decho " Comment" 3
|
|
;;
|
|
MANPATH*) decho " MANPATH" 3
|
|
trim "${line#MANPATH}"
|
|
add_to_manpath "$tstr"
|
|
;;
|
|
MANLOCALE*) decho " MANLOCALE" 3
|
|
trim "${line#MANLOCALE}"
|
|
manlocales="$manlocales:$tstr"
|
|
;;
|
|
MANCONFIG*) decho " MANCONFIG" 3
|
|
trim "${line#MANCONFIG}"
|
|
config_local="$tstr"
|
|
;;
|
|
# Set variables in the form of FOO_BAR
|
|
*_*[\ \ ]*) var="${line%%[\ \ ]*}"
|
|
trim "${line#$var}"
|
|
eval "$var=\"$tstr\""
|
|
decho " Parsed $var" 3
|
|
;;
|
|
esac
|
|
done < "$file"
|
|
}
|
|
|
|
# Usage: search_path
|
|
# Traverse $PATH looking for manpaths.
|
|
search_path() {
|
|
local IFS p path
|
|
|
|
decho "Searching PATH for man directories"
|
|
|
|
IFS=:
|
|
for path in $PATH; do
|
|
# Do a little special casing since the base manpages
|
|
# are in /usr/share/man instead of /usr/man or /man.
|
|
case "$path" in
|
|
/bin|/usr/bin) add_to_manpath "/usr/share/man" ;;
|
|
*) if add_to_manpath "$path/man"; then
|
|
:
|
|
elif add_to_manpath "$path/MAN"; then
|
|
:
|
|
else
|
|
case "$path" in
|
|
*/bin) p="${path%/bin}/man"
|
|
add_to_manpath "$p"
|
|
;;
|
|
*) ;;
|
|
esac
|
|
fi
|
|
;;
|
|
esac
|
|
done
|
|
unset IFS
|
|
|
|
if [ -z "$manpath" ]; then
|
|
decho ' Unable to find any manpaths, using default'
|
|
manpath=$man_default_path
|
|
fi
|
|
}
|
|
|
|
# Usage: search_whatis cmd [arglist]
|
|
# Do the heavy lifting for apropos/whatis
|
|
search_whatis() {
|
|
local IFS bad cmd f good key keywords loc opt out path rval wlist
|
|
|
|
cmd="$1"
|
|
shift
|
|
|
|
whatis_parse_args "$@"
|
|
|
|
build_manpath
|
|
build_manlocales
|
|
setup_pager
|
|
|
|
if [ "$cmd" = "whatis" ]; then
|
|
opt="-w"
|
|
fi
|
|
|
|
f='whatis'
|
|
|
|
IFS=:
|
|
for path in $MANPATH; do
|
|
if [ \! -d "$path" ]; then
|
|
decho "Skipping non-existent path: $path" 2
|
|
continue
|
|
fi
|
|
|
|
if [ -f "$path/$f" -a -r "$path/$f" ]; then
|
|
decho "Found whatis: $path/$f"
|
|
wlist="$wlist $path/$f"
|
|
fi
|
|
|
|
for loc in $MANLOCALES; do
|
|
if [ -f "$path/$loc/$f" -a -r "$path/$loc/$f" ]; then
|
|
decho "Found whatis: $path/$loc/$f"
|
|
wlist="$wlist $path/$loc/$f"
|
|
fi
|
|
done
|
|
done
|
|
unset IFS
|
|
|
|
if [ -z "$wlist" ]; then
|
|
echo "$cmd: no whatis databases in $MANPATH" >&2
|
|
exit 1
|
|
fi
|
|
|
|
rval=0
|
|
for key in $keywords; do
|
|
out=$(grep -Ehi $opt -- "$key" $wlist)
|
|
if [ -n "$out" ]; then
|
|
good="$good\\n$out"
|
|
else
|
|
bad="$bad\\n$key: nothing appropriate"
|
|
rval=1
|
|
fi
|
|
done
|
|
|
|
# Strip leading carriage return.
|
|
good=${good#\\n}
|
|
bad=${bad#\\n}
|
|
|
|
if [ -n "$good" ]; then
|
|
echo -e "$good" | $MANPAGER
|
|
fi
|
|
|
|
if [ -n "$bad" ]; then
|
|
echo -e "$bad" >&2
|
|
fi
|
|
|
|
exit $rval
|
|
}
|
|
|
|
# Usage: setup_cattool page
|
|
# Finds an appropriate decompressor based on extension
|
|
setup_cattool() {
|
|
case "$1" in
|
|
*.bz) cattool='/usr/bin/bzcat' ;;
|
|
*.bz2) cattool='/usr/bin/bzcat' ;;
|
|
*.gz) cattool='/usr/bin/zcat' ;;
|
|
*.lzma) cattool='/usr/bin/lzcat' ;;
|
|
*.xz) cattool='/usr/bin/xzcat' ;;
|
|
*) cattool='/usr/bin/zcat -f' ;;
|
|
esac
|
|
}
|
|
|
|
# Usage: setup_pager
|
|
# Correctly sets $MANPAGER
|
|
setup_pager() {
|
|
# Setup pager.
|
|
if [ -z "$MANPAGER" ]; then
|
|
if [ -n "$MANCOLOR" ]; then
|
|
MANPAGER="less -sR"
|
|
else
|
|
if [ -n "$PAGER" ]; then
|
|
MANPAGER="$PAGER"
|
|
else
|
|
MANPAGER="more -s"
|
|
fi
|
|
fi
|
|
fi
|
|
decho "Using pager: $MANPAGER"
|
|
}
|
|
|
|
# Usage: trim string
|
|
# Trims whitespace from beginning and end of a variable
|
|
trim() {
|
|
tstr=$1
|
|
while true; do
|
|
case "$tstr" in
|
|
[\ \ ]*) tstr="${tstr##[\ \ ]}" ;;
|
|
*[\ \ ]) tstr="${tstr%%[\ \ ]}" ;;
|
|
*) break ;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
# Usage: whatis_parse_args "$@"
|
|
# Parse commandline args for whatis and apropos.
|
|
whatis_parse_args() {
|
|
local cmd_arg
|
|
while getopts 'd' cmd_arg; do
|
|
case "${cmd_arg}" in
|
|
d) debug=$(( $debug + 1 )) ;;
|
|
*) whatis_usage ;;
|
|
esac
|
|
done >&2
|
|
|
|
shift $(( $OPTIND - 1 ))
|
|
|
|
keywords="$*"
|
|
}
|
|
|
|
# Usage: whatis_usage
|
|
# Display usage for the whatis/apropos utility.
|
|
whatis_usage() {
|
|
echo "usage: $cmd [-d] keyword [...]"
|
|
exit 1
|
|
}
|
|
|
|
|
|
|
|
# Supported commands
|
|
do_apropos() {
|
|
search_whatis apropos "$@"
|
|
}
|
|
|
|
do_man() {
|
|
man_parse_args "$@"
|
|
if [ -z "$pages" ]; then
|
|
echo 'What manual page do you want?' >&2
|
|
exit 1
|
|
fi
|
|
man_setup
|
|
|
|
for page in $pages; do
|
|
decho "Searching for $page"
|
|
man_find_and_display "$page"
|
|
done
|
|
|
|
exit ${ret:-0}
|
|
}
|
|
|
|
do_manpath() {
|
|
manpath_parse_args "$@"
|
|
if [ -z "$qflag" ]; then
|
|
manpath_warnings
|
|
fi
|
|
if [ -n "$Lflag" ]; then
|
|
build_manlocales
|
|
echo $MANLOCALES
|
|
else
|
|
build_manpath
|
|
echo $MANPATH
|
|
fi
|
|
exit 0
|
|
}
|
|
|
|
do_whatis() {
|
|
search_whatis whatis "$@"
|
|
}
|
|
|
|
# User's PATH setting decides on the groff-suite to pick up.
|
|
EQN=eqn
|
|
NROFF='groff -S -P-h -Wall -mtty-char -man'
|
|
PIC=pic
|
|
REFER=refer
|
|
TBL=tbl
|
|
TROFF='groff -S -man'
|
|
VGRIND=vgrind
|
|
|
|
LOCALE=/usr/bin/locale
|
|
STTY=/bin/stty
|
|
SYSCTL=/sbin/sysctl
|
|
|
|
debug=0
|
|
man_default_sections='1:1aout:8:2:3:n:4:5:6:7:9:l'
|
|
man_default_path='/usr/share/man:/usr/share/openssl/man:/usr/local/man'
|
|
cattool='/usr/bin/zcat -f'
|
|
|
|
config_global='/etc/man.conf'
|
|
|
|
# This can be overridden via a setting in /etc/man.conf.
|
|
config_local='/usr/local/etc/man.d/*.conf'
|
|
|
|
# Set noglobbing for now. I don't want spurious globbing.
|
|
set -f
|
|
|
|
case "$0" in
|
|
*apropos) do_apropos "$@" ;;
|
|
*manpath) do_manpath "$@" ;;
|
|
*whatis) do_whatis "$@" ;;
|
|
*) do_man "$@" ;;
|
|
esac
|