examples/complete/complete-examples

   1 #
   2 # Completion examples
   3 #
   4
   5 #
   6 # This encapsulates the default bash completion code
   7 # call with the word to be completed as $1
   8 #
   9 # Since programmable completion does not use the bash default completions
  10 # or the readline default of filename completion when the compspec does
  11 # not generate any matches, this may be used as a `last resort' in a
  12 # completion function to mimic the default bash completion behavior.
  13 #
  14 _bash_def_completion ()
  15 {
  16         local h t
  17         COMPREPLY=()
  18
  19         # command substitution
  20         if [[ "$1" == \$\(* ]]; then
  21                 t=${1#??}
  22                 COMPREPLY=( $(compgen -c -P '$(' $t) )
  23         fi
  24         # variables with a leading `${'
  25         if [ ${#COMPREPLY[@]} -eq 0 ] && [[ "$1" == \$\{* ]]; then
  26                 t=${1#??}
  27                 COMPREPLY=( $(compgen -v -P '${' -S '}' $t) )
  28         fi
  29         # variables with a leading `$'
  30         if [ ${#COMPREPLY[@]} -eq 0 ] && [[ "$1" == \$* ]]; then
  31                 t=${1#?}
  32                 COMPREPLY=( $(compgen -v -P '$' $t ) )
  33         fi
  34         # username expansion
  35         if [ ${#COMPREPLY[@]} -eq 0 ] && [[ "$1" == ~* ]] && [[ "$1" != */* ]]; then
  36                 t=${1#?}
  37                 COMPREPLY=( $( compgen -u -P '~' $t ) )
  38         fi
  39         # hostname
  40         if [ ${#COMPREPLY[@]} -eq 0 ] && [[ "$1" == *@* ]]; then
  41                 h=${1%%@*}
  42                 t=${1#*@}
  43                 COMPREPLY=( $( compgen -A hostname -P "${h}@" $t ) )
  44         fi
  45         # glob pattern
  46         if [ ${#COMPREPLY[@]} -eq 0 ]; then
  47                 # sh-style glob pattern
  48                 if [[ $1 == *[*?[]* ]]; then
  49                         COMPREPLY=( $( compgen -G "$1" ) )
  50                 # ksh-style extended glob pattern - must be complete
  51                 elif shopt -q extglob && [[ $1 == *[?*+\!@]\(*\)* ]]; then
  52                         COMPREPLY=( $( compgen -G "$1" ) )
  53                 fi
  54         fi
  55
  56         # final default is filename completion
  57         if [ ${#COMPREPLY[@]} -eq 0 ]; then
  58                 COMPREPLY=( $(compgen -f "$1" ) )
  59         fi
  60 }
  61
  62 #
  63 # Return 1 if $1 appears to contain a redirection operator.  Handles backslash
  64 # quoting (barely).
  65 #
  66 _redir_op()
  67 {
  68         case "$1" in
  69         *\\'[\<\>]'*)   return 1;;
  70         *[\<\>]*)       return 0;;
  71         *)              return 1;;
  72         esac
  73 }
  74
  75
  76 # _redir_test tests the current word ($1) and the previous word ($2) for
  77 # redirection operators and does filename completion on the current word
  78 # if either one contains a redirection operator
  79 _redir_test()
  80 {
  81         if _redir_op "$1" ; then
  82                 COMPREPLY=( $( compgen -f "$1" ) )
  83                 return 0
  84         elif _redir_op "$2" ; then
  85                 COMPREPLY=( $( compgen -f "$1" ) )
  86                 return 0
  87         fi
  88         return 1
  89 }
  90
  91 # optional, but without this you can't use extended glob patterns
  92 shopt -s extglob
  93
  94 #
  95 # Easy ones for the shell builtins
  96 #
  97 # nothing for: alias, break, continue, dirs, echo, eval, exit, getopts,
  98 # let, logout, popd, printf, pwd, return, shift, suspend, test, times,
  99 # umask
 100 #
 101
 102 complete -f -- . source
 103 complete -A enabled builtin
 104 complete -d cd
 105
 106 # this isn't exactly right yet -- needs to skip shell functions and
 107 # do $PATH lookup (or do compgen -c and filter out matches that also
 108 # appear in compgen -A function)
 109 complete -c command
 110
 111 # could add -S '=', but that currently screws up because readline appends
 112 # a space unconditionally
 113
 114 complete -v export local readonly
 115 complete -A helptopic help      # currently same as builtins
 116
 117 complete -d pushd
 118
 119 complete -A shopt shopt
 120
 121 complete -c type
 122
 123 complete -a unalias
 124 complete -v unset
 125
 126 #
 127 # Job control builtins: fg, bg, disown, kill, wait
 128 # kill not done yet
 129 #
 130
 131 complete -A stopped -P '%' bg
 132 complete -j -P '%' fg jobs disown
 133
 134 # this is not quite right at this point
 135
 136 _wait_func ()
 137 {
 138         local cur
 139         cur=${COMP_WORDS[COMP_CWORD]}
 140
 141         case "$cur" in
 142         %*)     COMPREPLY=( $(compgen -A running -P '%' ${cur#?} ) ) ;;
 143         [0-9]*) COMPREPLY=( $(jobs -p | grep ^${cur}) ) ;;
 144         *)      COMPREPLY=( $(compgen -A running -P '%') $(jobs -p) )
 145                 ;;
 146         esac
 147 }
 148 complete -F _wait_func wait
 149
 150 #
 151 # more complicated things, several as yet unimplemented
 152 #
 153
 154 #complete -F _bind_func bind
 155
 156 _declare_func()
 157 {
 158         local cur prev nflag opts
 159
 160         cur=${COMP_WORDS[COMP_CWORD]}
 161         prev=${COMP_WORDS[COMP_CWORD-1]}
 162
 163         COMPREPLY=()
 164         if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
 165                 COMPREPLY=(-a -f -F -i -r -x -p)
 166                 return 0;
 167         fi
 168         if [[ $cur == '+' ]]; then
 169                 COMPREPLY=(+i +x)
 170                 return 0;
 171         fi
 172         if [[ $prev == '-p' ]]; then
 173                 COMPREPLY=( $(compgen -v $cur) )
 174                 return 0;
 175         fi
 176         return 1
 177 }
 178 complete -F _declare_func declare typeset
 179
 180 _enable_func()
 181 {
 182         local cur prev nflag opts
 183
 184         cur=${COMP_WORDS[COMP_CWORD]}
 185         prev=${COMP_WORDS[COMP_CWORD-1]}
 186
 187         COMPREPLY=()
 188         if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
 189                 COMPREPLY=(-a -d -f -n -p -s)
 190                 return 0;
 191         fi
 192         if [[ $prev == '-f' ]]; then
 193                 COMPREPLY=( $( compgen -f $cur ) )
 194                 return 0;
 195         fi
 196         for opts in "${COMP_WORDS[@]}" ; do
 197                 if [[ $opts == -*n* ]]; then nflag=1; fi
 198         done
 199
 200         if [ -z "$nflag" ] ; then
 201                 COMPREPLY=( $( compgen -A enabled $cur ) )
 202         else
 203                 COMPREPLY=( $( compgen -A disabled $cur ) )
 204         fi
 205         return 0;
 206 }
 207 complete -F _enable_func enable
 208
 209 _exec_func()
 210 {
 211         local cur prev
 212
 213         cur=${COMP_WORDS[COMP_CWORD]}
 214         prev=${COMP_WORDS[COMP_CWORD-1]}
 215
 216         if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
 217                 COMPREPLY=(-a -c -l)
 218                 return 0;
 219         fi
 220         if [[ $prev != -*a* ]]; then
 221                 COMPREPLY=( $( compgen -c $cur ) )
 222                 return 0
 223         fi
 224         return 1;
 225 }
 226 complete -F _exec_func exec
 227
 228 _fc_func()
 229 {
 230         local cur prev
 231
 232         cur=${COMP_WORDS[COMP_CWORD]}
 233         prev=${COMP_WORDS[COMP_CWORD-1]}
 234
 235         if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
 236                 COMPREPLY=(-e -n -l -r -s)
 237                 return 0;
 238         fi
 239         if [[ $prev == -*e ]]; then
 240                 COMPREPLY=( $(compgen -c $cur) )
 241                 return 0
 242         fi
 243         return 1
 244 }
 245 complete -F _fc_func fc
 246
 247 _hash_func()
 248 {
 249         local cur prev
 250
 251         cur=${COMP_WORDS[COMP_CWORD]}
 252         prev=${COMP_WORDS[COMP_CWORD-1]}
 253
 254         if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
 255                 COMPREPLY=(-p -r)
 256                 return 0;
 257         fi
 258
 259         if [[ $prev == '-p' ]]; then
 260                 COMPREPLY=( $( compgen -f $cur ) )
 261                 return 0;
 262         fi
 263         COMPREPLY=( $( compgen -c $cur ) )
 264         return 0
 265 }
 266 complete -F _hash_func hash
 267
 268 _history_func()
 269 {
 270         local cur prev
 271
 272         cur=${COMP_WORDS[COMP_CWORD]}
 273         prev=${COMP_WORDS[COMP_CWORD-1]}
 274
 275         COMPREPLY=()
 276         if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
 277                 COMPREPLY=(-a -c -d -n -r -w -p -s)
 278                 return 0;
 279         fi
 280         if [[ $prev == -[anrw] ]]; then
 281                 COMPREPLY=( $( compgen -f $cur ) )
 282         fi
 283         return 0
 284 }
 285 complete -F _history_func history
 286
 287 #complete -F _read_func read
 288
 289 _set_func ()
 290 {
 291         local cur prev
 292
 293         cur=${COMP_WORDS[COMP_CWORD]}
 294         prev=${COMP_WORDS[COMP_CWORD-1]}
 295
 296         COMPREPLY=()
 297
 298         _redir_test "$cur" "$prev" && return 0;
 299
 300         if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
 301                 COMPREPLY=(-a -b -e -f -k -m -n -o -p -t -u -v -x -B -C -H -P --)
 302                 return 0;
 303         fi
 304         if [[ $cur == '+' ]]; then
 305                 COMPREPLY=(+a +b +e +f +k +m +n +o +p +t +u +v +x +B +C +H +P)
 306                 return 0;
 307         fi
 308         if [[ $prev == [+-]o ]]; then
 309                 COMPREPLY=( $(compgen -A setopt $cur) )
 310                 return 0;
 311         fi
 312         return 1;
 313 }
 314 complete -F _set_func set
 315
 316 _trap_func ()
 317 {
 318         local cur
 319         cur=${COMP_WORDS[COMP_CWORD]}
 320
 321         if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
 322                 COMPREPLY=(-l -p)
 323                 return 0;
 324         fi
 325         COMPREPLY=( $( compgen -A signal ${cur}) )
 326         return 0
 327 }
 328 complete -F _trap_func trap
 329
 330 #
 331 # meta-completion (completion for complete/compgen)
 332 #
 333 _complete_meta_func()
 334 {
 335         local cur prev cmd
 336         COMPREPLY=()
 337
 338         cmd=$1
 339
 340         cur=${COMP_WORDS[COMP_CWORD]}
 341         prev=${COMP_WORDS[COMP_CWORD-1]}
 342
 343         _redir_test "$cur" "$prev" && return 0;
 344
 345         if (( $COMP_CWORD <= 1 )) || [[ "$cur" == '-' ]]; then
 346                 case "$cmd" in
 347                 complete) COMPREPLY=(-a -b -c -d -e -f -j -k -v -u -r -p -A -G -W -P -S -X -F -C);;
 348                 compgen)  COMPREPLY=(-a -b -c -d -e -f -j -k -v -u -A -G -W -P -S -X -F -C);;
 349                 esac
 350                 return 0
 351         fi
 352
 353         if [[ $prev == -A ]]; then
 354                 COMPREPLY=(alias arrayvar binding builtin command directory \
 355 disabled enabled export file function helptopic hostname job keyword \
 356 running setopt shopt signal stopped variable)
 357                 return 0
 358         elif [[ $prev == -F ]]; then
 359                 COMPREPLY=( $( compgen -A function $cur ) )
 360         elif [[ $prev == -C ]]; then
 361                 COMPREPLY=( $( compgen -c $cur ) )
 362         else
 363                 COMPREPLY=( $( compgen -c $cur ) )
 364         fi
 365         return 0
 366 }
 367 complete -F _complete_meta_func complete compgen
 368
 369 #
 370 # some completions for shell reserved words
 371 #
 372 #complete -c -k time do if then else elif '{'
 373
 374 #
 375 # external commands
 376 #
 377
 378 complete -e printenv
 379
 380 complete -c nohup exec nice eval trace truss strace sotruss gdb
 381
 382 _make_targets ()
 383 {
 384         local mdef makef gcmd cur prev i
 385
 386         COMPREPLY=()
 387         cur=${COMP_WORDS[COMP_CWORD]}
 388         prev=${COMP_WORDS[COMP_CWORD-1]}
 389
 390         # if prev argument is -f, return possible filename completions.
 391         # we could be a little smarter here and return matches against
 392         # `makefile Makefile *.mk', whatever exists
 393         case "$prev" in
 394         -*f)    COMPREPLY=( $(compgen -f $cur ) ); return 0;;
 395         esac
 396
 397         # if we want an option, return the possible posix options
 398         case "$cur" in
 399         -)      COMPREPLY=(-e -f -i -k -n -p -q -r -S -s -t); return 0;;
 400         esac
 401
 402         # make reads `makefile' before `Makefile'
 403         if [ -f makefile ]; then
 404                 mdef=makefile
 405         elif [ -f Makefile ]; then
 406                 mdef=Makefile
 407         else
 408                 mdef=*.mk               # local convention
 409         fi
 410
 411         # before we scan for targets, see if a makefile name was specified
 412         # with -f
 413         for (( i=0; i < ${#COMP_WORDS[@]}; i++ )); do
 414                 if [[ ${COMP_WORDS[i]} == -*f ]]; then
 415                         eval makef=${COMP_WORDS[i+1]}   # eval for tilde expansion
 416                         break
 417                 fi
 418         done
 419
 420         [ -z "$makef" ] && makef=$mdef
 421
 422         # if we have a partial word to complete, restrict completions to
 423         # matches of that word
 424         if [ -n "$2" ]; then gcmd='grep "^$2"' ; else gcmd=cat ; fi
 425
 426         # if we don't want to use *.mk, we can take out the cat and use
 427         # test -f $makef and input redirection
 428         COMPREPLY=( $(cat $makef 2>/dev/null | awk 'BEGIN {FS=":"} /^[^.#       ][^=]*:/ {print $1}' | tr -s ' ' '\012' | sort -u | eval $gcmd ) )
 429 }
 430 complete -F _make_targets -X '+($*|*.[cho])' make gmake pmake
 431
 432 _umount_func ()
 433 {
 434         COMPREPLY=( $(mount | awk '{print $1}') )
 435 }
 436 complete -F _umount_func umount
 437
 438 _configure_func ()
 439 {
 440         case "$2" in
 441         -*)     ;;
 442         *)      return ;;
 443         esac
 444
 445         case "$1" in
 446         \~*)    eval cmd=$1 ;;
 447         *)      cmd="$1" ;;
 448         esac
 449
 450         COMPREPLY=( $("$cmd" --help | awk '{if ($1 ~ /--.*/) print $1}' | grep ^"$2" | sort -u) )
 451 }
 452 complete -F _configure_func configure
 453
 454 complete -W '"${GROUPS[@]}"' newgrp
 455
 456 complete -f chown ln more cat
 457 complete -d mkdir rmdir
 458 complete -f strip
 459
 460 complete -f -X '*.gz' gzip
 461 complete -f -X '*.Z' compress
 462 complete -f -X '!*.+(gz|tgz|Gz)' gunzip gzcat zcat zmore
 463 complete -f -X '!*.Z' uncompress zmore zcat
 464
 465 complete -f -X '!*.+(gif|jpg|jpeg|GIF|JPG|bmp)' xv
 466
 467 complete -f -X '!*.pl' perl perl5
 468
 469 complete -A hostname rsh telnet rlogin ftp ping xping host traceroute nslookup
 470 complete -A hostname rxterm rxterm3 rxvt2
 471
 472 complete -u su
 473
 474 complete -f -X '!*.+(ps|PS)' gs gv ghostview psselect pswrap
 475 complete -f -X '!*.+(dvi|DVI)' dvips xdvi dviselect dvitype
 476 complete -f -X '!*.+(pdf|PDF)' acroread
 477 complete -f -X '!*.texi*' makeinfo texi2dvi texi2html
 478 complete -f -X '!*.+(tex|TEX)' tex latex slitex
 479
 480 #
 481 # other possibilities, left as exercises
 482 #
 483 #complete -F _find_func find
 484 #complete -F _man_func man
 485 #complete -F _stty_func stty