3 # This defines some general, useful functions.
5 # test whether we've been here before or not.
7 function_sentinel &>/dev/null
9 # there was no error, so we can skip the inits.
10 if [ ! -z "$SHELL_DEBUG" ]; then
11 echo "skipping function definitions, because already defined."
16 if [ -z "$skip_all" ]; then
18 if [ ! -z "$SHELL_DEBUG" ]; then
19 echo "feisty meow function definitions beginning now..."
22 # a handy little method that can be used for date strings. it was getting
23 # really tiresome how many different ways the script did the date formatting.
24 function date_stringer() {
26 if [ -z "$sep" ]; then sep='_'; fi
27 date +"%Y$sep%m$sep%d$sep%H%M$sep%S" | tr -d '/\n/'
30 # makes a directory of the name specified and then tries to change the
31 # current directory to that directory.
33 if [ ! -d "$1" ]; then mkdir -p "$1"; fi
38 [[ "$(declare -p $1)" =~ "declare -a" ]]
46 # displays the value of a variable in bash friendly format.
51 local varname="$1"; shift
52 if [ -z "$varname" ]; then
56 if is_alias "$varname"; then
57 #echo found $varname is alias
58 local tmpfile="$(mktemp $TMP/aliasout.XXXXXX)"
59 alias $varname | sed -e 's/.*=//' >$tmpfile
60 echo "alias $varname=$(cat $tmpfile)"
62 elif [ -z "${!varname}" ]; then
63 echo "$varname undefined"
65 if is_array "$varname"; then
66 #echo found $varname is array var
68 eval temparray="(\${$varname[@]})"
69 echo "$varname=(${temparray[@]})"
70 #hmmm: would be nice to print above with elements enclosed in quotes, so that we can properly
71 # see ones that have spaces in them.
73 #echo found $varname is simple
74 echo "$varname=${!varname}"
81 # sets the variable in parameter 1 to the value in parameter 2, but only if
82 # that variable was undefined.
83 function set_var_if_undefined()
85 local var_name="$1"; shift
86 local var_value="$1"; shift
87 if [ -z "${!var_name}" ]; then
88 eval export $var_name="$var_value"
92 function success_sound()
94 if [ ! -z "$CLAM_FINISH_SOUND" ]; then
95 bash $FEISTY_MEOW_SCRIPTS/multimedia/sound_play.sh "$CLAM_FINISH_SOUND"
99 function error_sound()
101 if [ ! -z "$CLAM_ERROR_SOUND" ]; then
102 bash $FEISTY_MEOW_SCRIPTS/multimedia/sound_play.sh "$CLAM_ERROR_SOUND"
106 # checks the result of the last command that was run, and if that failed,
107 # then this complains and exits from bash. the function parameters are
108 # used as the message to print as a complaint.
109 function check_result()
111 if [ $? -ne 0 ]; then
112 echo -e "failed on: $*"
118 # locates a process given a search pattern to match in the process list.
119 # supports a single command line flag style parameter of "-u USERNAME";
120 # if the -u flag is found, a username is expected afterwards, and only the
121 # processes of that user are considered.
123 local -a patterns=("${@}")
125 #echo patterns list is: "${patterns[@]}"
129 if [ "${patterns[0]}" == "-u" ]; then
130 user_flag="-u ${patterns[1]}"
131 #echo "found a -u parm and user=${patterns[1]}"
132 # void the two elements with that user flag so we don't use them as patterns.
133 unset patterns[0] patterns[1]=
139 local PID_DUMP="$(mktemp "$TMP/zz_pidlist.XXXXXX")"
142 if [ "$OS" == "Windows_NT" ]; then
143 # gets cygwin's (god awful) ps to show windoze processes also.
144 local EXTRA_DOZER_FLAGS="-W"
145 # pattern to use for peeling off the process numbers.
146 local pid_finder_pattern='s/ *\([0-9][0-9]*\) *.*$/\1/p'
149 # flags which clean up the output on unixes, which apparently cygwin
150 # doesn't count as. their crappy specialized ps doesn't support this.
151 local EXTRA_UNIX_FLAGS="-o pid,args"
152 # pattern to use for peeling off the process numbers.
153 local pid_finder_pattern='s/^[[:space:]]*\([0-9][0-9]*\).*$/\1/p'
157 # if [ "$OS" == "Windows_NT" ]; then
159 ##hmmm: windows isn't implementing the user flag yet!
160 ##try collapsing back to the ps implementation from cygwin?
161 ## that would simplify things a lot, if we can get it to print the right output.
163 # # windows case has some odd gyrations to get the user list.
164 # if [ ! -d c:/tmp ]; then
167 # # windows7 magical mystery tour lets us create a file c:\\tmp_pids.txt, but then it's not
168 # # really there in the root of drive c: when we look for it later. hoping to fix that
169 # # problem by using a subdir, which also might be magical thinking from windows perspective.
170 # tmppid=c:\\tmp\\pids.txt
171 # # we have abandoned all hope of relying on ps on windows. instead we use wmic to get full
172 # # command lines for processes.
173 # wmic /locale:ms_409 PROCESS get processid,commandline </dev/null >"$tmppid"
175 # if [ ! -z "$(uname -a | grep "^MING" )" ]; then
178 # # we 'type' the file to get rid of the unicode result from wmic.
179 # # needs to be a windows format filename for 'type' to work.
180 # cmd $flag type "$tmppid" >$PID_DUMP
182 # local pid_finder_pattern='s/^.*[[:space:]][[:space:]]*\([0-9][0-9]*\) *\$/\1/p'
184 # for i in "${patterns[@]}"; do
185 # PIDS_SOUGHT+=($(cat $PID_DUMP \
187 # | sed -n -e "$pid_finder_pattern"))
192 /bin/ps $EXTRA_DOZER_FLAGS $EXTRA_UNIX_FLAGS $user_flag | tail -n +2 >$PID_DUMP
194 #echo got all this stuff in the pid dump file:
198 # remove the first line of the file, search for the pattern the
199 # user wants to find, and just pluck the process ids out of the
202 for i in "${patterns[@]}"; do
204 #echo phase 1: $(cat $PID_DUMP | sed -e '1d' )
205 #echo phase 2: $(cat $PID_DUMP | sed -e '1d' | grep -i "$i" )
206 PIDS_SOUGHT+=($(cat $PID_DUMP \
208 | sed -n -e "$pid_finder_pattern"))
211 #echo pids sought list became:
212 #echo "${PIDS_SOUGHT[@]}"
216 if [ ${#PIDS_SOUGHT[*]} -ne 0 ]; then
217 local PIDS_SOUGHT2=$(printf -- '%s\n' ${PIDS_SOUGHT[@]} | sort | uniq)
219 PIDS_SOUGHT=${PIDS_SOUGHT2[*]}
220 echo ${PIDS_SOUGHT[*]}
225 # finds all processes matching the pattern specified and shows their full
226 # process listing (whereas psfind just lists process ids).
229 echo "psa finds processes by pattern, but there was no pattern on the command line."
232 local -a patterns=("${@}")
233 p=$(psfind "${patterns[@]}")
239 if [ "${patterns[0]}" == "-u" ]; then
240 # void the two elements with that user flag so we don't use them as patterns.
241 unset patterns[0] patterns[1]=
245 echo "Processes matching ${patterns[@]}..."
247 if [ -n "$IS_DARWIN" ]; then
250 # only print the header the first time.
251 if [ -z "$fuzil_sentinel" ]; then
254 ps $i -w -u | sed -e '1d'
259 # cases besides mac os x's darwin.
260 if [ "$OS" == "Windows_NT" ]; then
261 # special case for windows.
264 ps -p $curr | tail -n +2
267 # normal OSes can handle a nice simple query.
273 # an unfortunately similarly named function to the above 'ps' as in process
274 # methods, but this 'ps' stands for postscript. this takes a postscript file
275 # and converts it into pcl3 printer language and then ships it to the printer.
276 # this mostly makes sense for an environment where one's default printer is
277 # pcl. if the input postscript causes ghostscript to bomb out, there has been
278 # some good success running ps2ps on the input file and using the cleaned
279 # postscript file for printing.
280 function ps2pcl2lpr() {
282 gs -sDEVICE=pcl3 -sOutputFile=- -sPAPERSIZE=letter "$i" | lpr -l
286 function fix_alsa() {
287 sudo /etc/init.d/alsasound restart
290 # switches from a /X/path form to an X:/ form. this also processes cygwin paths.
291 function unix_to_dos_path() {
292 # we usually remove dos slashes in favor of forward slashes.
294 if [[ ! "$OS" =~ ^[Ww][iI][nN] ]]; then
295 # fake this value for non-windows (non-cygwin) platforms.
298 # for cygwin, we must replace the /home/X path with an absolute one, since cygwin
299 # insists on the /home form instead of /c/cygwin/home being possible. this is
300 # super frustrating and nightmarish.
301 DOSSYHOME="$(cygpath -am "$HOME")"
304 if [ ! -z "$SERIOUS_SLASH_TREATMENT" ]; then
305 # unless this flag is set, in which case we force dos slashes.
306 echo "$1" | sed -e "s?^$HOME?$DOSSYHOME?g" | sed -e 's/\\/\//g' | sed -e 's/\/cygdrive//' | sed -e 's/\/\([a-zA-Z]\)\/\(.*\)/\1:\/\2/' | sed -e 's/\//\\/g'
308 echo "$1" | sed -e "s?^$HOME?$DOSSYHOME?g" | sed -e 's/\\/\//g' | sed -e 's/\/cygdrive//' | sed -e 's/\/\([a-zA-Z]\)\/\(.*\)/\1:\/\2/'
312 # switches from an X:/ form to a /cygdrive/X/path form. this is only useful
313 # for the cygwin environment currently.
314 function dos_to_unix_path() {
315 # we always remove dos slashes in favor of forward slashes.
316 #old: echo "$1" | sed -e 's/\\/\//g' | sed -e 's/\([a-zA-Z]\):\/\(.*\)/\/\1\/\2/'
317 echo "$1" | sed -e 's/\\/\//g' | sed -e 's/\([a-zA-Z]\):\/\(.*\)/\/cygdrive\/\1\/\2/'
320 # returns a successful value (0) if this system is debian or ubuntu.
321 function debian_like() {
322 # decide if we think this is debian or ubuntu or a variant.
323 DEBIAN_LIKE=$(if [ ! -z "$(grep -i debian /etc/issue)" \
324 -o ! -z "$(grep -i ubuntu /etc/issue)" ]; then echo 1; else echo 0; fi)
325 if [ $DEBIAN_LIKE -eq 1 ]; then
326 # success; this is debianish.
329 # this seems like some other OS.
334 # su function: makes su perform a login.
335 # for some OSes, this transfers the X authority information to the new login.
338 # debian currently requires the full version which imports X authority
339 # information for su.
341 # get the x authority info for our current user.
342 source $FEISTY_MEOW_SCRIPTS/x_win/get_x_auth.sh
344 if [ -z "$X_auth_info" ]; then
345 # if there's no authentication info to pass along, we just do a normal su.
348 # under X, we update the new login's authority info with the previous
350 (unset XAUTHORITY; /bin/su -l $* -c "$X_auth_info ; export DISPLAY=$DISPLAY ; bash")
353 # non-debian supposedly doesn't need the extra overhead any more.
354 # or at least suse doesn't, which is the other one we've tested on.
358 # relabel the console after returning.
359 bash $FEISTY_MEOW_SCRIPTS/tty/label_terminal_with_infos.sh
362 # sudo function wraps the normal sudo by ensuring we replace the terminal
363 # label if they're doing an su with the sudo.
365 local first_command="$1"
367 if [ "$first_command" == "su" ]; then
368 # yep, they were doing an su, but they're back now.
369 bash $FEISTY_MEOW_SCRIPTS/tty/label_terminal_with_infos.sh
373 # trashes the .#blah files that cvs and svn leave behind when finding conflicts.
374 # this kind of assumes you've already checked them for any salient facts.
375 function clean_cvs_junk() {
377 find $i -follow -type f -iname ".#*" -exec perl $FEISTY_MEOW_SCRIPTS/files/safedel.pl {} ";"
381 # overlay for nechung binary so that we can complain less grossly about it when it's missing.
383 local wheres_nechung=$(which nechung 2>/dev/null)
384 if [ -z "$wheres_nechung" ]; then
385 echo "The nechung oracle program cannot be found. You may want to consider"
386 echo "rebuilding the feisty meow applications with this command:"
387 echo "bash $FEISTY_MEOW_SCRIPTS/generator/produce_feisty_meow.sh"
393 # recreates all the generated files that the feisty meow scripts use.
394 function regenerate() {
395 # do the bootstrapping process again.
396 echo "regenerating feisty meow script environment."
397 bash $FEISTY_MEOW_SCRIPTS/core/reconfigure_feisty_meow.sh
399 # force a full reload by turning off sentinel variable and alias.
400 # the nethack one is used by fred's customizations.
401 # interesting note perhaps: found that the NETHACKOPTIONS variable was
402 # not being unset correctly when preceded by an alias. split them up
403 # like they are now due to that bug.
404 unset -v CORE_ALIASES_LOADED FEISTY_MEOW_LOADING_DOCK NECHUNG NETHACKOPTIONS
405 unset -f function_sentinel
406 # reload feisty meow environment in current shell.
407 source $FEISTY_MEOW_SCRIPTS/core/launch_feisty_meow.sh
408 # run nechung oracle to give user a new fortune.
412 # generates a random password where the first parameter is the number of characters
413 # in the password (default 20) and the second parameter specifies whether to use
414 # special characters (1) or not (0).
415 # found function at http://legroom.net/2010/05/06/bash-random-password-generator
416 function random_password()
418 [ "$2" == "0" ] && CHAR="[:alnum:]" || CHAR="[:graph:]"
419 cat /dev/urandom | tr -cd "$CHAR" | head -c ${1:-32}
423 # a wrapper for the which command that finds items on the path. some OSes
424 # do not provide which, so we want to not be spewing errors when that
429 which which &>/dev/null
430 if [ $? -ne 0 ]; then
431 # there is no which command here. we produce nothing due to this.
434 echo $(which $to_find)
437 # copies a set of custom scripts into the proper location for feisty meow
438 # to merge their functions and aliases with the standard set.
439 function recustomize()
442 if [ -z "$user" ]; then
443 # use our default example user if there was no name provided.
446 if [ ! -d "$FEISTY_MEOW_APEX/customizing/$user" ]; then
447 echo "The customization folder provided for $user should be:"
448 echo " '$FEISTY_MEOW_APEX/customizing/$user'"
449 echo "but that folder does not exist. Skipping customization."
452 regenerate >/dev/null
453 pushd "$FEISTY_MEOW_LOADING_DOCK/custom" &>/dev/null
454 local incongruous_files="$(bash "$FEISTY_MEOW_SCRIPTS/files/list_non_dupes.sh" "$FEISTY_MEOW_APEX/customizing/$user" "$FEISTY_MEOW_LOADING_DOCK/custom")"
456 #echo "the incongruous files list is: $incongruous_files"
457 # disallow a single character result, since we get "*" as result when nothing exists yet.
458 if [ ${#incongruous_files} -ge 2 ]; then
459 echo "cleaning unknown older overrides..."
460 perl "$FEISTY_MEOW_SCRIPTS/files/safedel.pl" $incongruous_files
464 echo "copying custom overrides for $user"
465 mkdir -p "$FEISTY_MEOW_LOADING_DOCK/custom" 2>/dev/null
466 perl "$FEISTY_MEOW_SCRIPTS/text/cpdiff.pl" "$FEISTY_MEOW_APEX/customizing/$user" "$FEISTY_MEOW_LOADING_DOCK/custom"
467 if [ -d "$FEISTY_MEOW_APEX/customizing/$user/scripts" ]; then
468 echo "copying custom scripts for $user"
469 \cp -R "$FEISTY_MEOW_APEX/customizing/$user/scripts" "$FEISTY_MEOW_LOADING_DOCK/custom/"
475 #uhhh, this does what now?
476 function add_cygwin_drive_mounts() {
477 for i in c d e f g h q z ; do
478 ln -s /cygdrive/$i $i
482 # takes a file to modify, and then it will replace any occurrences of the
483 # pattern provided as the second parameter with the text in the third
485 function replace_pattern_in_file()
487 local file="$1"; shift
488 local pattern="$1"; shift
489 local replacement="$1"; shift
490 if [ -z "$file" -o -z "$pattern" -o -z "$replacement" ]; then
491 echo "replace_pattern_in_file: needs a filename, a pattern to replace, and the"
492 echo "text to replace that pattern with."
495 sed -i -e "s%$pattern%$replacement%g" "$file"
498 # goes to a particular directory passed as parameter 1, and then removes all
499 # the parameters after that from that directory.
500 function push_whack_pop()
502 local dir="$1"; shift
503 pushd "$dir" &>/dev/null
504 rm -rf $* &>/dev/null
510 while [ $# -gt 0 ]; do
512 if [ ! -f "$arg" -a ! -d "$arg" ]; then
513 echo "failure to find a file or directory named '$arg'."
517 # first we will capture the output of the character replacement operation for reporting.
518 # this is done first since some filenames can't be properly renamed in perl (e.g. if they
519 # have pipe characters apparently).
520 intermediate_name="$(bash "$FEISTY_MEOW_SCRIPTS/files/replace_spaces_with_underscores.sh" "$arg")"
521 local saw_intermediate_result=0
522 if [ -z "$intermediate_name" ]; then
523 # make sure we report something, if there are no further name changes.
524 intermediate_name="'$arg'"
526 # now zap the first part of the name off (since original name isn't needed).
527 intermediate_name="$(echo $intermediate_name | sed -e 's/.*=> //')"
528 saw_intermediate_result=1
531 # first we rename the file to be lower case.
532 actual_file="$(echo $intermediate_name | sed -e "s/'\([^']*\)'/\1/")"
533 final_name="$(perl $FEISTY_MEOW_SCRIPTS/files/renlower.pl "$actual_file")"
534 local saw_final_result=0
535 if [ -z "$final_name" ]; then
536 final_name="$intermediate_name"
538 final_name="$(echo $final_name | sed -e 's/.*=> //')"
541 #echo intermed=$saw_intermediate_result
542 #echo final=$saw_final_result
544 if [[ $saw_intermediate_result != 0 || $saw_final_result != 0 ]]; then
545 # printout the combined operation results.
546 echo "'$arg' => $final_name"
553 # new breed of definer functions goes here. still in progress.
555 # defines an alias and remembers that this is a new or modified definition.
556 # if the feisty meow codebase is unloaded, then so are all the aliases that
558 function define_yeti_alias()
560 # if alias exists already, save old value for restore,
561 # otherwise save null value for restore,
562 # have to handle unaliasing if there was no prior value of one
564 # add alias name to a list of feisty defined aliases.
566 #hmmm: first implem, just do the alias and get that working...
573 # defines a variable within the feisty meow environment and remembers that
574 # this is a new or modified definition. if the feisty meow codebase is
575 # unloaded, then so are all the variables that were defined.
576 # this function always exports the variables it defines.
577 # function define_yeti_variable()
579 ## if variable exists already, save old value for restore,
580 ## otherwise save null value for restore,
581 ## have to handle unsetting if there was no prior value of one
583 ## add variable name to a list of feisty defined variables.
585 ##hmmm: first implem just sets it up and exports the variable.
586 ## i.e., this method always exports.
595 function function_sentinel() { return 0; }
597 if [ ! -z "$SHELL_DEBUG" ]; then echo "feisty meow function definitions done."; fi
601 # test code for set_var_if_undefined.
603 if [ $run_test != 0 ]; then
604 echo running tests on set_var_if_undefined.
606 set_var_if_undefined flagrant forknordle
607 check_result "testing if defined variable would be whacked"
608 if [ $flagrant != petunia ]; then
609 echo set_var_if_undefined failed to leave the test variable alone
612 unset bobblehead_stomper
613 set_var_if_undefined bobblehead_stomper endurance
614 if [ $bobblehead_stomper != endurance ]; then
615 echo set_var_if_undefined failed to set a variable that was not defined yet