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/* str-list.h: declarations for string lists.
Copyright 1993, 1994, 2007, 2008, 2010, 2012, 2018 Karl Berry.
Copyright 1999, 2005 Olaf Weber.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, see <http://www.gnu.org/licenses/>. */
#ifndef KPATHSEA_STR_LIST_H
#define KPATHSEA_STR_LIST_H
#include <kpathsea/c-proto.h>
#include <kpathsea/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Lists of strings; used for, e.g., directory lists. */
typedef struct
{
unsigned length;
string *list;
} str_list_type;
/* Lists of const strings; used for, e.g., hash tables. */
typedef struct
{
unsigned length;
const_string *list;
} cstr_list_type;
#define STR_LIST_LENGTH(l) ((l).length)
#define STR_LIST_EMPTY(l) (STR_LIST_LENGTH (l) == 0)
#define STR_LIST(l) ((l).list)
#define STR_LIST_ELT(l, n) (STR_LIST (l)[n])
#define STR_LIST_FIRST_ELT(l) STR_LIST_ELT ((l), 0)
#define STR_LIST_LAST_ELT(l) STR_LIST_ELT ((l), STR_LIST_LENGTH (l) - 1)
#ifdef MAKE_KPSE_DLL /* libkpathsea internal only */
/* Return a new, empty, list. */
static inline str_list_type
str_list_init (void)
{
str_list_type ret;
STR_LIST_LENGTH (ret) = 0;
STR_LIST (ret) = NULL;
return ret;
}
static inline cstr_list_type
cstr_list_init (void)
{
cstr_list_type ret;
STR_LIST_LENGTH (ret) = 0;
STR_LIST (ret) = NULL;
return ret;
}
#endif /* MAKE_KPSE_DLL */
/* Append the string S to the list L. It's up to the caller to not
deallocate S; we don't copy it. Also up to the caller to terminate
the list with a null entry. */
extern KPSEDLL void str_list_add (str_list_type *l, string s);
extern KPSEDLL void cstr_list_add (cstr_list_type *l, const_string s);
#ifdef MAKE_KPSE_DLL /* libkpathsea internal only */
/* Append all the elements from MORE to TARGET. */
extern void str_list_concat (str_list_type * target, str_list_type more);
/* Free the space for the list elements (but not the list elements
themselves). */
extern void str_list_free (str_list_type *l);
/* Append each element of MORE to each element of TARGET. */
extern void str_list_concat_elements
(str_list_type *target, str_list_type more);
/* Remove duplicate elements from L, freeing their space. */
extern void str_list_uniqify (str_list_type *l);
#endif /* MAKE_KPSE_DLL */
#ifdef __cplusplus
}
#endif
#endif /* not KPATHSEA_STR_LIST_H */
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