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/* pcomplib.c - library functions for programmable completion. */
/* Copyright (C) 1999-2020 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/>.
*/
#include <config.h>
#if defined (PROGRAMMABLE_COMPLETION)
#include "bashansi.h"
#include <stdio.h>
#if defined (HAVE_UNISTD_H)
# ifdef _MINIX
# include <sys/types.h>
# endif
# include <unistd.h>
#endif
#include "bashintl.h"
#include "shell.h"
#include "pcomplete.h"
#define COMPLETE_HASH_BUCKETS 256 /* must be power of two */
#define STRDUP(x) ((x) ? savestring (x) : (char *)NULL)
HASH_TABLE *prog_completes = (HASH_TABLE *)NULL;
static void free_progcomp PARAMS((PTR_T));
COMPSPEC *
compspec_create ()
{
COMPSPEC *ret;
ret = (COMPSPEC *)xmalloc (sizeof (COMPSPEC));
ret->refcount = 0;
ret->actions = (unsigned long)0;
ret->options = (unsigned long)0;
ret->globpat = (char *)NULL;
ret->words = (char *)NULL;
ret->prefix = (char *)NULL;
ret->suffix = (char *)NULL;
ret->funcname = (char *)NULL;
ret->command = (char *)NULL;
ret->lcommand = (char *)NULL;
ret->filterpat = (char *)NULL;
return ret;
}
void
compspec_dispose (cs)
COMPSPEC *cs;
{
cs->refcount--;
if (cs->refcount == 0)
{
FREE (cs->globpat);
FREE (cs->words);
FREE (cs->prefix);
FREE (cs->suffix);
FREE (cs->funcname);
FREE (cs->command);
FREE (cs->lcommand);
FREE (cs->filterpat);
free (cs);
}
}
COMPSPEC *
compspec_copy (cs)
COMPSPEC *cs;
{
COMPSPEC *new;
new = (COMPSPEC *)xmalloc (sizeof (COMPSPEC));
new->refcount = 1; /* was cs->refcount, but this is a fresh copy */
new->actions = cs->actions;
new->options = cs->options;
new->globpat = STRDUP (cs->globpat);
new->words = STRDUP (cs->words);
new->prefix = STRDUP (cs->prefix);
new->suffix = STRDUP (cs->suffix);
new->funcname = STRDUP (cs->funcname);
new->command = STRDUP (cs->command);
new->lcommand = STRDUP (cs->lcommand);
new->filterpat = STRDUP (cs->filterpat);
return new;
}
void
progcomp_create ()
{
if (prog_completes == 0)
prog_completes = hash_create (COMPLETE_HASH_BUCKETS);
}
int
progcomp_size ()
{
return (HASH_ENTRIES (prog_completes));
}
static void
free_progcomp (data)
PTR_T data;
{
COMPSPEC *cs;
cs = (COMPSPEC *)data;
compspec_dispose (cs);
}
void
progcomp_flush ()
{
if (prog_completes)
hash_flush (prog_completes, free_progcomp);
}
void
progcomp_dispose ()
{
if (prog_completes)
hash_dispose (prog_completes);
prog_completes = (HASH_TABLE *)NULL;
}
int
progcomp_remove (cmd)
char *cmd;
{
register BUCKET_CONTENTS *item;
if (prog_completes == 0)
return 1;
item = hash_remove (cmd, prog_completes, 0);
if (item)
{
if (item->data)
free_progcomp (item->data);
free (item->key);
free (item);
return (1);
}
return (0);
}
int
progcomp_insert (cmd, cs)
char *cmd;
COMPSPEC *cs;
{
register BUCKET_CONTENTS *item;
if (cs == NULL)
programming_error (_("progcomp_insert: %s: NULL COMPSPEC"), cmd);
if (prog_completes == 0)
progcomp_create ();
cs->refcount++;
item = hash_insert (cmd, prog_completes, 0);
if (item->data)
free_progcomp (item->data);
else
item->key = savestring (cmd);
item->data = cs;
return 1;
}
COMPSPEC *
progcomp_search (cmd)
const char *cmd;
{
register BUCKET_CONTENTS *item;
COMPSPEC *cs;
if (prog_completes == 0)
return ((COMPSPEC *)NULL);
item = hash_search (cmd, prog_completes, 0);
if (item == NULL)
return ((COMPSPEC *)NULL);
cs = (COMPSPEC *)item->data;
return (cs);
}
void
progcomp_walk (pfunc)
hash_wfunc *pfunc;
{
if (prog_completes == 0 || pfunc == 0 || HASH_ENTRIES (prog_completes) == 0)
return;
hash_walk (prog_completes, pfunc);
}
#endif /* PROGRAMMABLE_COMPLETION */
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