complete.def

android-w.song.android.widget

This file is complete.def, from which is created complete.c.
It implements the builtins "complete", "compgen", and "compopt" in Bash.

Copyright (C) 1999-2010 Free Software Foundation, Inc.

This file is part of GNU Bash, the Bourne Again SHell.

Bash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Bash is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Bash.  If not, see <http://www.gnu.org/licenses/>.

$PRODUCES complete.c

$BUILTIN complete
$DEPENDS_ON PROGRAMMABLE_COMPLETION
$FUNCTION complete_builtin
$SHORT_DOC complete [-abcdefgjksuv] [-pr] [-DE] [-o option] [-A action] [-G globpat] [-W wordlist]  [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [name ...]
Specify how arguments are to be completed by Readline.

For each NAME, specify how arguments are to be completed.  If no options
are supplied, existing completion specifications are printed in a way that
allows them to be reused as input.

Options:
  -p	print existing completion specifications in a reusable format
  -r	remove a completion specification for each NAME, or, if no
	NAMEs are supplied, all completion specifications
  -D	apply the completions and actions as the default for commands
	without any specific completion defined
  -E	apply the completions and actions to "empty" commands --
	completion attempted on a blank line

When completion is attempted, the actions are applied in the order the
uppercase-letter options are listed above.  The -D option takes
precedence over -E.

Exit Status:
Returns success unless an invalid option is supplied or an error occurs.
$END

#include <config.h>

#include <stdio.h>

#include "../bashtypes.h"

#if defined (HAVE_UNISTD_H)
#  include <unistd.h>
#endif

#include "../bashansi.h"
#include "../bashintl.h"

#include "../shell.h"
#include "../builtins.h"
#include "../pcomplete.h"
#include "../bashline.h"

#include "common.h"
#include "bashgetopt.h"

#include <readline/readline.h>

#define STRDUP(x)       ((x) ? savestring (x) : (char *)NULL)

/* Structure containing all the non-action (binary) options; filled in by
   build_actions(). */
struct _optflags {
  int pflag;
  int rflag;
  int Dflag;
  int Eflag;
};

static int find_compact __P((char *));
static int find_compopt __P((char *));

static int build_actions __P((WORD_LIST *, struct _optflags *, unsigned long *, unsigned long *));

static int remove_cmd_completions __P((WORD_LIST *));

static int print_one_completion __P((char *, COMPSPEC *));
static int print_compitem __P((BUCKET_CONTENTS *));
static void print_compopts __P((const char *, COMPSPEC *, int));
static void print_all_completions __P((void));
static int print_cmd_completions __P((WORD_LIST *));

static char *Garg, *Warg, *Parg, *Sarg, *Xarg, *Farg, *Carg;

static const struct _compacts {
  const char * const actname;
  int actflag;
  int actopt;
} compacts[] = {
  { "alias",     CA_ALIAS,     'a' },
  { "arrayvar",  CA_ARRAYVAR,   0 },
  { "binding",   CA_BINDING,    0 },
  { "builtin",   CA_BUILTIN,   'b' },
  { "command",   CA_COMMAND,   'c' },
  { "directory", CA_DIRECTORY, 'd' },
  { "disabled",  CA_DISABLED,   0 },
  { "enabled",   CA_ENABLED,    0 },
  { "export",    CA_EXPORT,    'e' },
  { "file",      CA_FILE,      'f' },
  { "function",  CA_FUNCTION,   0 },
  { "helptopic", CA_BUILTIN,  0 },	/* for now */
  { "hostname",  CA_HOSTNAME,   0 },
  { "group",     CA_GROUP,     'g' },
  { "job",       CA_JOB,       'j' },
  { "keyword",   CA_KEYWORD,   'k' },
  { "running",   CA_RUNNING,    0 },
  { "service",   CA_SERVICE,   's' },
  { "setopt",    CA_SETOPT,     0 },
  { "shopt",     CA_SHOPT,      0 },
  { "signal",    CA_SIGNAL,     0 },
  { "stopped",   CA_STOPPED,    0 },
  { "user",      CA_USER,      'u' },
  { "variable",  CA_VARIABLE,  'v' },
  { (char *)NULL, 0, 0 },
};

/* This should be a STRING_INT_ALIST */
const static struct _compopt {
  const char * const optname;
  int optflag;
} compopts[] = {
  { "bashdefault", COPT_BASHDEFAULT },
  { "default",	COPT_DEFAULT },
  { "dirnames", COPT_DIRNAMES },
  { "filenames",COPT_FILENAMES},
  { "nospace",	COPT_NOSPACE },
  { "plusdirs", COPT_PLUSDIRS },
  { (char *)NULL, 0 },
};

static int
find_compact (name)
     char *name;
{
  register int i;

  for (i = 0; compacts[i].actname; i++)
    if (STREQ (name, compacts[i].actname))
      return i;
  return -1;
}

static int
find_compopt (name)
     char *name;
{
  register int i;

  for (i = 0; compopts[i].optname; i++)
    if (STREQ (name, compopts[i].optname))
      return i;
  return -1;
}

/* Build the actions and compspec options from the options specified in LIST.
   ACTP is a pointer to an unsigned long in which to place the bitmap of
   actions.  OPTP is a pointer to an unsigned long in which to place the
   btmap of compspec options (arguments to `-o').  PP, if non-null, gets 1
   if -p is supplied; RP, if non-null, gets 1 if -r is supplied.
   If either is null, the corresponding option generates an error.
   This also sets variables corresponding to options that take arguments as
   a side effect; the caller should ensure that those variables are set to
   NULL before calling build_actions.  Return value:
   	EX_USAGE = bad option
   	EXECUTION_SUCCESS = some options supplied
   	EXECUTION_FAILURE = no options supplied
*/

static int
build_actions (list, flagp, actp, optp)
     WORD_LIST *list;
     struct _optflags *flagp;
     unsigned long *actp, *optp;
{
  int opt, ind, opt_given;
  unsigned long acts, copts;

  acts = copts = (unsigned long)0L;
  opt_given = 0;

  reset_internal_getopt ();
  while ((opt = internal_getopt (list, "abcdefgjko:prsuvA:G:W:P:S:X:F:C:DE")) != -1)
    {
      opt_given = 1;
      switch (opt)
	{
	case 'r':
	  if (flagp)
	    {
	      flagp->rflag = 1;
	      break;
	    }
	  else
	    {
	      sh_invalidopt ("-r");
	      builtin_usage ();
	      return (EX_USAGE);
	    }

	case 'p':
	  if (flagp)
	    {
	      flagp->pflag = 1;
	      break;
	    }
	  else
	    {
	      sh_invalidopt ("-p");
	      builtin_usage ();
	      return (EX_USAGE);
	    }

	case 'a':
	  acts |= CA_ALIAS;
	  break;
	case 'b':
	  acts |= CA_BUILTIN;
	  break;
	case 'c':
	  acts |= CA_COMMAND;
	  break;
	case 'd':
	  acts |= CA_DIRECTORY;
	  break;
	case 'e':
	  acts |= CA_EXPORT;
	  break;
	case 'f':
	  acts |= CA_FILE;
	  break;
	case 'g':
	  acts |= CA_GROUP;
	  break;
	case 'j':
	  acts |= CA_JOB;
	  break;
	case 'k':
	  acts |= CA_KEYWORD;
	  break;
	case 's':
	  acts |= CA_SERVICE;
	  break;
	case 'u':
	  acts |= CA_USER;
	  break;
	case 'v':
	  acts |= CA_VARIABLE;
	  break;
	case 'o':
	  ind = find_compopt (list_optarg);
	  if (ind < 0)
	    {
	      sh_invalidoptname (list_optarg);
	      return (EX_USAGE);
	    }
	  copts |= compopts[ind].optflag;
	  break;
	case 'A':
	  ind = find_compact (list_optarg);
	  if (ind < 0)
	    {
	      builtin_error (_("%s: invalid action name"), list_optarg);
	      return (EX_USAGE);
	    }
	  acts |= compacts[ind].actflag;
	  break;
	case 'C':
	  Carg = list_optarg;
	  break;
	case 'D':
	  if (flagp)
	    {
	      flagp->Dflag = 1;
	      break;
	    }
	  else
	    {
	      sh_invalidopt ("-D");
	      builtin_usage ();
	      return (EX_USAGE);
	    }
	case 'E':
	  if (flagp)
	    {
	      flagp->Eflag = 1;
	      break;
	    }
	  else
	    {
	      sh_invalidopt ("-E");
	      builtin_usage ();
	      return (EX_USAGE);
	    }
	case 'F':
	  Farg = list_optarg;
	  break;
	case 'G':
	  Garg = list_optarg;
	  break;
	case 'P':
	  Parg = list_optarg;
	  break;
	case 'S':
	  Sarg = list_optarg;
	  break;
	case 'W':
	  Warg = list_optarg;
	  break;
	case 'X':
	  Xarg = list_optarg;
	  break;
	default:
	  builtin_usage ();
	  return (EX_USAGE);
	}
    }

  *actp = acts;
  *optp = copts;

  return (opt_given ? EXECUTION_SUCCESS : EXECUTION_FAILURE);
}

/* Add, remove, and display completion specifiers. */
int
complete_builtin (list)
     WORD_LIST *list;
{
  int opt_given, rval;
  unsigned long acts, copts;
  COMPSPEC *cs;
  struct _optflags oflags;
  WORD_LIST *l, *wl;

  if (list == 0)
    {
      print_all_completions ();
      return (EXECUTION_SUCCESS);
    }

  opt_given = oflags.pflag = oflags.rflag = oflags.Dflag = oflags.Eflag = 0;

  acts = copts = (unsigned long)0L;
  Garg = Warg = Parg = Sarg = Xarg = Farg = Carg = (char *)NULL;
  cs = (COMPSPEC *)NULL;

  /* Build the actions from the arguments.  Also sets the [A-Z]arg variables
     as a side effect if they are supplied as options. */
  rval = build_actions (list, &oflags, &acts, &copts);
  if (rval == EX_USAGE)
    return (rval);
  opt_given = rval != EXECUTION_FAILURE;

  list = loptend;

  wl = oflags.Dflag ? make_word_list (make_bare_word (DEFAULTCMD), (WORD_LIST *)NULL)
  		    : (oflags.Eflag ? make_word_list (make_bare_word (EMPTYCMD), (WORD_LIST *)NULL) : 0);

  /* -p overrides everything else */
  if (oflags.pflag || (list == 0 && opt_given == 0))
    {
      if (wl)
	{
	  rval = print_cmd_completions (wl);
	  dispose_words (wl);
	  return rval;
	}
      else if (list == 0)
	{
	  print_all_completions ();
	  return (EXECUTION_SUCCESS);
	}
      return (print_cmd_completions (list));
    }

  /* next, -r overrides everything else. */
  if (oflags.rflag)
    {
      if (wl)
	{
	  rval = remove_cmd_completions (wl);
	  dispose_words (wl);
	  return rval;
	}
      else if (list == 0)
	{
	  progcomp_flush ();
	  return (EXECUTION_SUCCESS);
	}
      return (remove_cmd_completions (list));
    }

  if (wl == 0 && list == 0 && opt_given)
    {
      builtin_usage ();
      return (EX_USAGE);
    }

  /* If we get here, we need to build a compspec and add it for each
     remaining argument. */
  cs = compspec_create ();
  cs->actions = acts;
  cs->options = copts;

  cs->globpat = STRDUP (Garg);
  cs->words = STRDUP (Warg);
  cs->prefix = STRDUP (Parg);
  cs->suffix = STRDUP (Sarg);
  cs->funcname = STRDUP (Farg);
  cs->command = STRDUP (Carg);
  cs->filterpat = STRDUP (Xarg);

  for (rval = EXECUTION_SUCCESS, l = wl ? wl : list ; l; l = l->next)
    {
      /* Add CS as the compspec for the specified commands. */
      if (progcomp_insert (l->word->word, cs) == 0)
	rval = EXECUTION_FAILURE;
    }

  dispose_words (wl);
  return (rval);