xref: /freebsd/usr.sbin/bsdconfig/share/keymap.subr (revision 62cfcf62f627e5093fb37026a6d8c98e4d2ef04c) 
1if [ ! "$_KEYMAP_SUBR" ]; then _KEYMAP_SUBR=1
2#
3# Copyright (c) 2013-2015 Devin Teske
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
27# $FreeBSD$
28#
29############################################################ INCLUDES
30
31BSDCFG_SHARE="/usr/share/bsdconfig"
32. $BSDCFG_SHARE/common.subr || exit 1
33f_dprintf "%s: loading includes..." keymap.subr
34f_include $BSDCFG_SHARE/struct.subr
35
36############################################################ CONFIGURATION
37
38#
39# Defaults taken from usr.sbin/kbdmap/kbdmap.h
40#
41: ${DEFAULT_LANG:=en}
42case "$( sysctl -n kern.vty )" in
43vt)	: ${DEFAULT_KEYMAP_DIR:=/usr/share/vt/keymaps}		;;
44*)	: ${DEFAULT_KEYMAP_DIR:=/usr/share/syscons/keymaps}	;;
45esac
46
47############################################################ GLOBALS
48
49KEYMAPS=
50NKEYMAPS=0
51
52# A "keymap" from kbdmap's point of view
53f_struct_define KEYMAP \
54	desc \
55	keym \
56	mark
57
58#
59# Default behavior is to call f_keymap_get_all() automatically when loaded.
60#
61: ${KEYMAP_SELF_SCAN_ALL=1}
62
63############################################################ FUNCTIONS
64
65# f_keymap_register $name $desc $keym $mark
66#
67# Register a keymap. A `structure' (see struct.subr) is created with the name
68# keymap_$name (so make sure $name contains only alpha-numeric characters or
69# the underscore, `_'). The remaining arguments after $name correspond to the
70# propertise of the `KEYMAP' structure-type (defined above).
71#
72# If not already registered, the keymap is then appended to the KEYMAPS
73# environment variable, a space-separated list of all registered keymaps.
74#
75f_keymap_register()
76{
77	local name="$1" desc="$2" keym="$3" mark="$4"
78
79	f_struct_new KEYMAP "keymap_$name" || return $FAILURE
80	keymap_$name set desc "$desc"
81	keymap_$name set keym "$keym"
82	keymap_$name set mark "$mark"
83
84	# Scan our global register to see if needs ammending
85	local k found=
86	for k in $KEYMAPS; do
87		[ "$k" = "$name" ] || continue
88		found=1 && break
89	done
90	[ "$found" ] || KEYMAPS="$KEYMAPS $name"
91
92	return $SUCCESS
93}
94
95# f_keymap_checkfile $keymap
96#
97# Check that $keymap is a readable kbdmap(5) file. Returns success if $keymap
98# is a file, is readable, and exists in $DEFAULT_KEYMAP_DIR; otherwise failure.
99# If debugging is enabled, an appropriate debug error message is printed if
100# $keymap is not available.
101#
102f_keymap_checkfile()
103{
104	local keym="$1"
105
106	# Fixup keymap if it doesn't already contain at least one `/'
107	[ "${keym#*/}" = "$keym" ] && keym="$DEFAULT_KEYMAP_DIR/$keym"
108
109	# Short-cuts
110	[ -f "$keym" -a -r "$keym" ] && return $SUCCESS
111	f_debugging || return $FAILURE
112
113	# Print an appropriate debug error message
114	if [ ! -e "$keym" ]; then
115		f_dprintf "%s: No such file or directory" "$keym"
116	elif [ ! -f "$keym" ]; then
117		f_dprintf "%s: Not a file!" "$keym"
118	elif [ ! -r "$keym" ]; then
119		f_dprintf "%s: Permission denied" "$keym"
120	fi
121
122	return $FAILURE
123}
124
125# f_keymap_get_all
126#
127# Get all keymap information for kbdmap(5) entries both in the database and
128# loosely existing in $DEFAULT_KEYMAP_DIR.
129#
130f_keymap_get_all()
131{
132	local fname=f_keymap_get_all
133	local lang="${LC_ALL:-${LC_CTYPE:-${LANG:-$DEFAULT_LANG}}}"
134	[ "$lang" = "C" ] && lang="$DEFAULT_LANG"
135
136	f_dprintf "%s: Looking for keymap files..." $fname
137	f_dialog_info "$msg_looking_for_keymap_files"
138	f_dprintf "DEFAULT_LANG=[%s]" "$DEFAULT_LANG"
139
140	eval "$( awk -F: -v lang="$lang" -v lang_default="$DEFAULT_LANG" '
141		BEGIN {
142			# en_US.ISO8859-1 -> en_..\.ISO8859-1
143			dialect = lang
144			if (length(dialect) >= 6 &&
145			    substr(dialect, 3, 1) == "_")
146				dialect = substr(dialect, 1, 3) ".." \
147				          substr(dialect, 6)
148			printf "f_dprintf \"dialect=[%%s]\" \"%s\";\n", dialect
149
150			# en_US.ISO8859-1 -> en
151			lang_abk = lang
152			if (length(lang_abk) >= 3 &&
153			    substr(lang_abk, 3, 1) == "_")
154				lang_abk = substr(lang_abk, 1, 2)
155			printf "f_dprintf \"lang_abk=[%%s]\" \"%s\";\n",
156			       lang_abk
157		}
158		function find_token(buffer, token)
159		{
160			if (split(buffer, tokens, /,/) == 0) return 0
161			found = 0
162			for (t in tokens)
163				if (token == tokens[t]) { found = 1; break }
164			return found
165		}
166		function add_keymap(desc,mark,keym)
167		{
168			marks[keym] = mark
169			name = keym
170			gsub(/[^[:alnum:]_]/, "_", name)
171			gsub(/'\''/, "'\''\\'\'\''", desc);
172			printf "f_keymap_checkfile %s && " \
173			       "f_keymap_register %s '\'%s\'' %s %u\n",
174			       keym, name, desc, keym, mark
175		}
176		!/^[[:space:]]*(#|$)/ {
177			sub(/^[[:space:]]*/, "", $0)
178			keym = $1
179			if (keym ~ /^(MENU|FONT)$/) next
180			lg = ($2 == "" ? lang_default : $2)
181
182			# Match the entry and store the type of match we made
183			# as the mark value (so that if we make a better match
184			# later on with a higher mark, it overwrites previous)
185
186			mark = marks[keym];
187			if (find_token(lg, lang))
188				add_keymap($3, 4, keym) # Best match
189			else if (mark <= 3 && find_token(lg, dialect))
190				add_keymap($3, 3, keym)
191			else if (mark <= 2 && find_token(lg, lang_abk))
192				add_keymap($3, 2, keym)
193			else if (mark <= 1 && find_token(lg, lang_default))
194				add_keymap($3, 1, keym)
195			else if (mark <= 0)
196				add_keymap($3, 0, keym)
197		}
198	' "$DEFAULT_KEYMAP_DIR/INDEX.${DEFAULT_KEYMAP_DIR##*/}" )"
199
200
201	#
202	# Look for keymaps not in database
203	#
204	local direntry keym name
205	set +f # glob
206	for direntry in "$DEFAULT_KEYMAP_DIR"/*; do
207		[ "${direntry##*.}" = ".kbd" ] || continue
208		keym="${direntry##*/}"
209		f_str2varname "$keym" name
210		f_struct keymap_$name && continue
211		f_keymap_checkfile "$keym" &&
212			f_keymap_register $name "${keym%.*}" "$keym" 0
213		f_dprintf "%s: not in kbdmap(5) database" "$keym"
214	done
215
216	#
217	# Sort the items by their descriptions
218	#
219	f_dprintf "%s: Sorting keymap entries by description..." $fname
220	KEYMAPS=$(
221		for k in $KEYMAPS; do
222			echo -n "$k "
223			# NOTE: Translate '8x8' to '8x08' before sending to
224			# sort(1) so that things work out as we might expect.
225			debug= keymap_$k get desc | awk 'gsub(/8x8/,"8x08")||1'
226		done | sort -k2 | awk '{
227			printf "%s%s", (started ? " " : ""), $1; started = 1
228		}'
229	)
230
231	return $SUCCESS
232}
233
234# f_keymap_kbdcontrol $keymap
235#
236# Install keyboard map file from $keymap.
237#
238f_keymap_kbdcontrol()
239{
240	local keymap="$1"
241
242	[ "$keymap" ] || return $SUCCESS
243
244	# Fixup keymap if it doesn't already contain at least one `/'
245	[ "${keymap#*/}" = "$keymap" ] && keymap="$DEFAULT_KEYMAP_DIR/$keymap"
246
247	[ "$USE_XDIALOG" ] || kbdcontrol -l "$keymap"
248}
249
250############################################################ MAIN
251
252#
253# Scan for keymaps unless requeted otherwise
254#
255f_dprintf "%s: KEYMAP_SELF_SCAN_ALL=[%s]" keymap.subr "$KEYMAP_SELF_SCAN_ALL"
256case "$KEYMAP_SELF_SCAN_ALL" in
257""|0|[Nn][Oo]|[Oo][Ff][Ff]|[Ff][Aa][Ll][Ss][Ee]) : do nothing ;;
258*) f_keymap_get_all
259esac
260
261f_count NKEYMAPS $KEYMAPS
262f_dprintf "%s: Found %u keymap file(s)." keymap.subr $NKEYMAPS
263
264f_dprintf "%s: Successfully loaded." keymap.subr
265
266fi # ! $_KEYMAP_SUBR
267