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74a53e28 MW |
1 | ### -*-sh-*- |
2 | ### | |
3 | ### Common per-shell configuration. | |
4 | ||
5 | ###-------------------------------------------------------------------------- | |
6 | ### Utilities. | |
7 | ||
8 | __mdw_programp () { type >/dev/null 2>&1 "$1"; } | |
9 | ||
10 | __mdw_source_if_exists () { | |
11 | local i | |
12 | for i in "$@"; do | |
13 | if [ -r "$i" ]; then . "$i"; fi | |
14 | done | |
15 | } | |
16 | ||
17 | ###-------------------------------------------------------------------------- | |
4877b8d8 MW |
18 | ### Hooks. |
19 | ||
20 | __mdw_addhook () { | |
21 | local hk=$1 fn=$2 t | |
22 | ||
23 | eval t=\${$hk+t} | |
24 | case $t in t) ;; *) echo >&2 "unknown hook \`$hk'"; return 2; esac | |
25 | ||
26 | eval t=\$$hk | |
27 | case " $t " in | |
28 | *" $fn "*) ;; | |
29 | *) eval "$hk=\${$hk:+\$$hk }\$fn" ;; | |
30 | esac | |
31 | } | |
32 | ||
33 | __mdw_delhook () { | |
34 | local hk=$1 fn=$2 t l r | |
35 | ||
36 | eval t=\${$hk+t} | |
37 | case $t in t) ;; *) echo >&2 "unknown hook \`$hk'"; return 2; esac | |
38 | ||
39 | eval t=\" \$$hk \" | |
40 | case $t in | |
41 | *" $fn "*) | |
42 | l=${t%% $fn*} r=${t##*$fn } | |
43 | l=${l# } r=${r% } | |
44 | eval "$hk=\$l\${l:+ }\$r" | |
45 | ;; | |
46 | esac | |
47 | } | |
48 | ||
49 | __mdw_setrc () { return $1; } | |
50 | ||
51 | __mdw_runhook () { | |
52 | local hk=$1 saverc=$? t i; shift | |
53 | ||
54 | eval t=\${$hk+t} | |
55 | case $t in t) ;; *) echo >&2 "unknown hook \`$hk'"; return 2; esac | |
56 | ||
57 | eval t=\$$hk | |
58 | for i in $t; do __mdw_setrc $saverc; "$i" "$@"; done | |
59 | } | |
60 | ||
61 | ###-------------------------------------------------------------------------- | |
74a53e28 MW |
62 | ### Prompt machinery. |
63 | ||
2bbac58c | 64 | __mdw_host=$(hostname) |
d4bbc0c0 MW |
65 | __mdw_hqual= |
66 | __mdw_hqual=$__mdw_hqual${SCHROOT_CHROOT_NAME+/$SCHROOT_CHROOT_NAME} | |
67 | __mdw_hqual=$__mdw_hqual${CROSS_BUILDENV+/$CROSS_BUILDENV} | |
2bbac58c | 68 | __mdw_set_prompt_hacks () { host=$__mdw_host; dir=""; } |
74a53e28 MW |
69 | |
70 | __mdw_set_prompt_pieces () { | |
74a53e28 MW |
71 | |
72 | ## Fancy highlighting in some terminals. | |
73 | local bold unbold nl gitcolour rccolour uncolour | |
55360ba3 MW |
74 | local host dir more |
75 | bold="" unbold="" nl="" gitcolour="" rccolour="" uncolour="" more="" | |
74a53e28 MW |
76 | __mdw_set_prompt_hacks |
77 | ||
78 | ## Choose the right delimiters. Highlight root prompts specially; | |
79 | ## highlight when I'm running as some other user. Highlight when this | |
80 | ## isn't the outermost shell on the terminal. | |
81 | local left right user u tty | |
2ab43296 | 82 | user=${USER-${LOGNAME-$(id -un)}} |
74a53e28 MW |
83 | case $(id -u) in |
84 | 0) | |
85 | left=$(echo « | iconv -f UTF-8 -t //translit) | |
86 | right=$(echo » | iconv -f UTF-8 -t //translit) | |
87 | ;; | |
88 | *) | |
89 | case $user in | |
90 | mdw | mwooding | nemo) u="" left="[" right="]" ;; | |
91 | *) u="$user@" left="{" right="}" ;; | |
92 | esac | |
93 | tty=$(tty) | |
94 | case "$__mdw_tty" in | |
95 | "$tty") left="<" right=">" ;; | |
96 | *) __mdw_tty=$tty; export __mdw_tty ;; | |
97 | esac | |
98 | ;; | |
99 | esac | |
100 | ||
101 | ## If this session is insecure then highlight that. | |
102 | local sec_l sec_r h | |
103 | h=$(hostname) | |
104 | case ${SSH_CLIENT-nil},${SCHROOT_CHROOT_NAME-nil},$__mdw_sechost in | |
105 | nil,nil,"$h") sec_l="" sec_r="" ;; | |
106 | nil,nil,*) sec_l="(" sec_r=")" ;; | |
107 | *) sec_l="" sec_r="" | |
108 | esac | |
109 | ||
1a1af55e MW |
110 | ## If this is an schroot environment or some other interesting augmented |
111 | ## environment then point this out. | |
74a53e28 MW |
112 | |
113 | ## Put together the main pieces. | |
d4bbc0c0 | 114 | __mdw_prompt_left="$nl$bold$left$sec_l$u$host$__mdw_hqual$sec_r$dir" |
74a53e28 MW |
115 | __mdw_prompt_git_left="$unbold$gitcolour" |
116 | __mdw_prompt_git_right="$uncolour$bold" | |
117 | __mdw_prompt_rc_left="$unbold$rccolour" | |
118 | __mdw_prompt_rc_right="$uncolour$bold" | |
119 | __mdw_prompt_right="$right$unbold" | |
55360ba3 | 120 | __mdw_prompt_more=" $more$bold>$unbold " |
74a53e28 MW |
121 | } |
122 | ||
123 | __mdw_set_prompt () { | |
062b450d | 124 | case "${TERM-dumb}:${INSIDE_EMACS+$INSIDE_EMACS}" in |
d281a650 | 125 | dumb:) |
55bd0261 MW |
126 | case $(id -u) in 0) PS1='# ' ;; *) PS1='$ ' ;; esac |
127 | PS2='> ' | |
128 | ;; | |
129 | *) | |
130 | __mdw_last_rc=$? | |
131 | local git rc | |
132 | if type __git_ps1 >/dev/null 2>&1; then | |
133 | git="$__mdw_prompt_git_left$(__git_ps1)$__mdw_prompt_git_right" | |
134 | else | |
135 | git="" | |
136 | fi | |
137 | case $__mdw_last_rc in | |
138 | 0) rc="" ;; | |
139 | *) rc="$__mdw_prompt_rc_left rc=$__mdw_last_rc$__mdw_prompt_rc_right" ;; | |
140 | esac | |
141 | PS1="$__mdw_prompt_left$git$rc$__mdw_prompt_right" | |
55360ba3 | 142 | PS2="$PS1$__mdw_prompt_more" |
55bd0261 MW |
143 | unset __mdw_last_rc |
144 | ;; | |
74a53e28 | 145 | esac |
74a53e28 MW |
146 | } |
147 | ||
1e8b505f MW |
148 | __mdw_xterm_settitle () { |
149 | printf >/dev/tty \ | |
150 | "\e]2;%s@%s:%s – %s\e\\" \ | |
123a656c | 151 | "$USER" "$__mdw_host$__mdw_hqual" "$PWD" \ |
1e8b505f MW |
152 | "$1" |
153 | } | |
154 | __mdw_xterm_precmd () { __mdw_xterm_settitle "$__mdw_shell"; } | |
155 | __mdw_xterm_preexec () { __mdw_xterm_settitle "$1"; } | |
05f8a57d | 156 | |
1e8b505f MW |
157 | __mdw_screen_settitle () { |
158 | printf >/dev/tty \ | |
159 | "\ek%s\e\\" \ | |
160 | "$1" | |
161 | } | |
162 | __mdw_screen_precmd () { __mdw_screen_settitle "$__mdw_shell"; } | |
163 | __mdw_screen_preexec () { __mdw_screen_settitle "$1"; } | |
74a53e28 | 164 | |
4877b8d8 | 165 | if [ -t 0 ]; then |
05f8a57d MW |
166 | case ${STY+t},${__mdw_precmd_hook+t},${__mdw_preexec_hook+t},${TERM} in |
167 | ,t,t,xterm*) | |
168 | __mdw_addhook __mdw_precmd_hook __mdw_xterm_precmd | |
169 | __mdw_addhook __mdw_preexec_hook __mdw_xterm_preexec | |
170 | ;; | |
171 | t,t,t,*) | |
4877b8d8 MW |
172 | __mdw_addhook __mdw_precmd_hook __mdw_screen_precmd |
173 | __mdw_addhook __mdw_preexec_hook __mdw_screen_preexec | |
174 | ;; | |
74a53e28 | 175 | esac |
4877b8d8 MW |
176 | case ${__mdw_precmd_hook+t} in |
177 | t) __mdw_addhook __mdw_precmd_hook __mdw_set_prompt ;; | |
178 | esac | |
179 | fi | |
74a53e28 MW |
180 | |
181 | ###-------------------------------------------------------------------------- | |
182 | ### Some handy aliases. | |
183 | ||
184 | alias cx='chmod +x' | |
185 | alias which="command -v" | |
186 | alias rc="rc -l" | |
187 | rootly () { | |
188 | case $# in 0) set -- "${SHELL-/bin/sh}" ;; esac | |
189 | $__MDW_ROOTLY "$@" | |
190 | } | |
191 | alias r=rootly | |
192 | alias re="rootly $EDITOR" | |
193 | alias pstree="pstree -hl" | |
194 | alias cdtmp='cd ${TMPDIR-/tmp}' | |
195 | alias pushtmp='pushd ${TMPDIR-/tmp}' | |
196 | alias e="$EDITOR" | |
197 | alias svn="svnwrap svn" | |
198 | alias @="ssh" | |
daeece4b | 199 | alias make="nice make" |
ee747cc6 | 200 | alias cross-run="nice cross-run" |
8712436f | 201 | alias gdb="gdb -q" |
74a53e28 MW |
202 | |
203 | ###-------------------------------------------------------------------------- | |
204 | ### Colour output. | |
205 | ||
206 | ## Arrange for `ls' output to be in colour. | |
207 | if __mdw_programp dircolors; then eval $(dircolors -b "$HOME/.dircolors") | |
208 | else unset LS_COLORS; fi | |
209 | ||
210 | unalias ls 2>/dev/null || : | |
211 | ls () { | |
212 | if [ -t 1 ]; then command ls $LS_OPTIONS ${LS_COLORS+--color=auto} "$@" | |
213 | else command ls "$@"; fi | |
214 | } | |
215 | ||
216 | ## Arrange for `grep' output to be in colour. | |
217 | export GREP_COLORS="mt=01;31:ms=01;31:mc=031;31:fn=36:ln=36:bn=36:se=34" | |
218 | ||
219 | greplike () { | |
220 | local grep=$1; shift | |
221 | if [ -t 1 ]; then | |
222 | command $grep ${GREP_COLORS+--color=always} "$@" | mdw-pager | |
223 | else | |
224 | command $grep "$@" | |
225 | fi | |
226 | } | |
227 | alias grep="greplike grep" | |
228 | alias egrep="greplike egrep" | |
229 | alias fgrep="greplike fgrep" | |
230 | alias zgrep="greplike zgrep" | |
231 | ||
049cd015 MW |
232 | ## Arrange for `diff' output to be in colour. |
233 | export DIFF_COLORS="hd=1:ln=36:ad=32:de=31" | |
234 | difflike () { | |
235 | local diff=$1; shift | |
236 | if [ -t 1 ]; then | |
237 | command $diff \ | |
238 | ${DIFF_COLORS+--color=always} \ | |
239 | ${DIFF_COLORS+--palette="$DIFF_COLORS"} \ | |
240 | "$@" | mdw-pager | |
241 | else | |
242 | command $diff "$@" | cat | |
243 | fi | |
244 | } | |
245 | alias diff="difflike diff" | |
246 | ||
74a53e28 MW |
247 | ###-------------------------------------------------------------------------- |
248 | ### Other hacks. | |
249 | ||
250 | ## Turn off pagers inside Emacs shell buffers. | |
251 | case "$INSIDE_EMACS" in | |
252 | 2[2-9].*,comint | [3-9][0-9].*,comint) export PAGER=cat ;; | |
253 | esac | |
254 | ||
255 | ###-------------------------------------------------------------------------- | |
256 | ### More complicated shell functions. | |
257 | ||
258 | ## xt [@HOST] XTERM-ARGS | |
259 | ## | |
260 | ## Open a terminal, maybe on a remote host. | |
261 | xt () { | |
262 | case "$1" in | |
263 | @*) | |
264 | local remote=${1#@} title | |
265 | shift | |
266 | if [ $# -gt 0 ]; then | |
267 | title="xterm [$remote] $1" | |
268 | else | |
269 | title="xterm [$remote]" | |
270 | fi | |
271 | (xterm -title "$title" -e ssh $remote "$@" &) | |
272 | ;; | |
273 | *) | |
274 | (xterm "$@" &) | |
275 | ;; | |
276 | esac | |
277 | } | |
278 | ||
279 | ## core [y|n] | |
280 | ## | |
281 | ## Tweak core dumps on and off, or show the current status. | |
282 | core () { | |
283 | case "x$1" in | |
284 | xon|xy|xyes) ulimit -Sc $(ulimit -Hc) ;; | |
285 | xoff|xn|xno) ulimit -Sc 0 ;; | |
286 | x) | |
287 | local l=$(ulimit -Sc) | |
288 | case $l in | |
289 | 0) echo "Core dumps disabled" ;; | |
290 | unlimited) echo "Core dumps enabled" ;; | |
291 | *) echo "Core dump limit is $l blocks" ;; | |
292 | esac | |
293 | ;; | |
294 | *) | |
295 | echo >&2 "usage: core [y|n]" | |
296 | return 1 | |
297 | ;; | |
298 | esac | |
299 | } | |
300 | ||
301 | ## world [NAME] | |
302 | ## | |
303 | ## Set current security world to NAME. With no NAME, print the currently | |
304 | ## selected world. | |
305 | world () { | |
306 | local nfast=${NFAST_HOME-/opt/nfast} | |
307 | local kmdata | |
308 | case "$#" in | |
309 | 0) | |
310 | echo "${NFAST_KMDATA#$nfast/kmdata-}" | |
311 | ;; | |
312 | *) | |
313 | if [ -d "$1" ]; then | |
314 | kmdata=$1 | |
315 | elif [ -d "$nfast/kmdata-$1" ]; then | |
316 | kmdata=$nfast/kmdata-$1 | |
317 | else | |
318 | echo >&2 "world: can't find world $1" | |
319 | return 1 | |
320 | fi | |
321 | shift | |
322 | case "$#" in | |
323 | 0) export NFAST_KMDATA=$kmdata ;; | |
324 | *) "$@" ;; | |
325 | esac | |
326 | ;; | |
327 | esac | |
328 | } | |
329 | ||
330 | ## path-add [VAR] DIR | |
331 | ## | |
332 | ## Add DIR to the beginning of PATH-like variable VAR (defaults to PATH) if | |
333 | ## it's not there already. | |
334 | path_add () { | |
335 | local pathvar export dir val | |
336 | case $# in | |
337 | 1) pathvar=PATH dir=$1 export="export PATH" ;; | |
338 | 2) pathvar=$1 dir=$2 export=: ;; | |
339 | *) echo >&2 "Usage: $0 [VAR] DIR"; return 1 ;; | |
340 | esac | |
341 | eval val=\$$pathvar | |
342 | case ":$val:" in | |
343 | *:"$dir":*) ;; | |
344 | *) val=$dir:$val ;; | |
345 | esac | |
346 | eval $pathvar=\$val | |
347 | eval $export | |
348 | } | |
349 | ||
350 | ## path-remove [VAR] DIR | |
351 | ## | |
352 | ## Remove DIR from PATH-like variable VAR (defaults to PATH); it's not an | |
353 | ## error if DIR isn't in VAR. | |
354 | path_remove () { | |
355 | local pathvar export dir val | |
356 | case $# in | |
357 | 1) pathvar=PATH dir=$1 export="export PATH" ;; | |
358 | 2) pathvar=$1 dir=$2 export=: ;; | |
359 | *) echo >&2 "Usage: $0 [VAR] DIR"; return 1 ;; | |
360 | esac | |
361 | eval val=\$$pathvar | |
362 | case ":$val:" in | |
363 | :"$dir":) val= ;; | |
364 | :"$dir":*) val=${val#$dir:} ;; | |
365 | *:"$dir":) val=${val%:$dir} ;; | |
366 | *:"$dir":*) val=${val%%:$dir:*}:${val#*:$dir:} ;; | |
367 | esac | |
368 | eval $pathvar=\$val | |
369 | eval $export | |
370 | } | |
371 | ||
372 | ## pathhack [-f] +HACK|-HACK... | |
373 | ## | |
374 | ## Each HACK refers to a subdirectory of `~/bin/hacks'. A hack name preceded | |
375 | ## by `+' adds the directory to the PATH; a `-' removes. Adding a hack | |
376 | ## that's already on the PATH doesn't do anything unless `-f' is set, in | |
377 | ## which case it gets moved to the beginning. With no arguments, print the | |
378 | ## currently installed hacks. | |
379 | pathhack () { | |
380 | local p e force arg hack dir | |
381 | p=$PATH | |
382 | if [ $# -eq 0 ]; then | |
383 | while :; do | |
384 | e=${p%%:*} | |
385 | case "$e" in "$HOME/bin/hacks/"*) echo ${e#$HOME/bin/hacks/} ;; esac | |
386 | case "$p" in *:*) p=${p#*:} ;; *) break ;; esac | |
387 | done | |
388 | return | |
389 | fi | |
390 | force=nil | |
391 | while [ $# -gt 0 ]; do | |
392 | arg=$1 | |
393 | case "$arg" in | |
394 | -f | --force) force=t; shift; continue ;; | |
395 | --) shift; break ;; | |
396 | [-+]*) ;; | |
397 | *) break; ;; | |
398 | esac | |
399 | hack=${arg#[+-]} | |
400 | dir=$HOME/bin/hacks/$hack | |
401 | if ! [ -d "$dir" ]; then | |
402 | echo "$0: path hack $hack not found" | |
403 | return 1 | |
404 | fi | |
405 | case "$arg,$force,:$PATH:" in | |
406 | -*,*,*:"$dir":*) path_remove p "$dir" ;; | |
407 | +*,t,*:"$dir":*) path_remove p "$dir"; path_add p "$dir" ;; | |
408 | +*,nil,*:"$dir":*) ;; | |
409 | +*,*) path_add p "$dir" ;; | |
410 | esac | |
411 | shift | |
412 | done | |
413 | if [ $# -eq 0 ]; then PATH=$p; export PATH | |
414 | else PATH=$p "$@"; fi | |
415 | } | |
416 | ||
417 | ###-------------------------------------------------------------------------- | |
418 | ### Finishing touches. | |
419 | ||
4cb8b8da MW |
420 | ## Make sure `$HOME/bin' is on the path. |
421 | path_add "$HOME/bin" | |
422 | ||
6054bdb6 MW |
423 | ## Set the temporary directory again. (A setuid or setgid program may have |
424 | ## unhelpfully forgotten this for us.) | |
0a030a39 MW |
425 | case ${TMPDIR+t} in |
426 | t) ;; | |
427 | *) if __mdw_programp tmpdir; then eval $(tmpdir -b); fi ;; | |
428 | esac | |
6054bdb6 | 429 | |
74a53e28 MW |
430 | ## For `root' use -- some simple molly-guards. |
431 | case $(id -u) in | |
432 | 0) | |
433 | alias rm="rm -i" cp="cp -i" mv="mv -i" | |
434 | set -o noclobber | |
435 | ;; | |
436 | esac | |
437 | ||
438 | ## Run any local hooks. | |
439 | __mdw_source_if_exists "$HOME/.shell-local" | |
440 | ||
441 | ###----- That's all, folks -------------------------------------------------- |