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/* stringvec.c - function for managing arrays of strings. */
/* Copyright (C) 2000 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 2, 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; see the file COPYING. If not, write to the Free Software
Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
#include <config.h>
#include <bashtypes.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
#include <bashansi.h>
#include <stdio.h>
#include <chartypes.h>
#include "shell.h"
#ifdef INCLUDE_UNUSED
/* Find NAME in ARRAY. Return the index of NAME, or -1 if not present.
ARRAY should be NULL terminated. */
int
find_name_in_array (name, array)
char *name, **array;
{
int i;
for (i = 0; array[i]; i++)
if (STREQ (name, array[i]))
return (i);
return (-1);
}
#endif
/* Allocate an array of strings with room for N members. */
char **
alloc_array (n)
int n;
{
return ((char **)xmalloc ((n) * sizeof (char *)));
}
/* Return the length of ARRAY, a NULL terminated array of char *. */
int
array_len (array)
char **array;
{
register int i;
for (i = 0; array[i]; i++);
return (i);
}
/* Free the contents of ARRAY, a NULL terminated array of char *. */
void
free_array_members (array)
char **array;
{
register int i;
if (array == 0)
return;
for (i = 0; array[i]; i++)
free (array[i]);
}
void
free_array (array)
char **array;
{
if (array == 0)
return;
free_array_members (array);
free (array);
}
/* Allocate and return a new copy of ARRAY and its contents. */
char **
copy_array (array)
char **array;
{
register int i;
int len;
char **ret;
len = array_len (array);
ret = (char **)xmalloc ((len + 1) * sizeof (char *));
for (i = 0; array[i]; i++)
ret[i] = savestring (array[i]);
ret[i] = (char *)NULL;
return (ret);
}
/* Comparison routine for use with qsort() on arrays of strings. Uses
strcoll(3) if available, otherwise it uses strcmp(3). */
int
qsort_string_compare (s1, s2)
register char **s1, **s2;
{
#if defined (HAVE_STRCOLL)
return (strcoll (*s1, *s2));
#else /* !HAVE_STRCOLL */
int result;
if ((result = **s1 - **s2) == 0)
result = strcmp (*s1, *s2);
return (result);
#endif /* !HAVE_STRCOLL */
}
/* Sort ARRAY, a null terminated array of pointers to strings. */
void
sort_char_array (array)
char **array;
{
qsort (array, array_len (array), sizeof (char *), (QSFUNC *)qsort_string_compare);
}
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