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/*-
* Copyright (c) 2003-2007 Tim Kientzle
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD: src/lib/libarchive/archive_string.h,v 1.13 2008/12/06 05:56:43 kientzle Exp $
*
*/
#ifndef __LIBARCHIVE_BUILD
#error This header is only to be used internally to libarchive.
#endif
#ifndef ARCHIVE_STRING_H_INCLUDED
#define ARCHIVE_STRING_H_INCLUDED
#include <stdarg.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h> /* required for wchar_t on some systems */
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_WCHAR_H
#include <wchar.h>
#endif
/*
* Basic resizable/reusable string support a la Java's "StringBuffer."
*
* Unlike sbuf(9), the buffers here are fully reusable and track the
* length throughout.
*
* Note that all visible symbols here begin with "__archive" as they
* are internal symbols not intended for anyone outside of this library
* to see or use.
*/
struct archive_string {
char *s; /* Pointer to the storage */
size_t length; /* Length of 's' */
size_t buffer_length; /* Length of malloc-ed storage */
};
/* Initialize an archive_string object on the stack or elsewhere. */
#define archive_string_init(a) \
do { (a)->s = NULL; (a)->length = 0; (a)->buffer_length = 0; } while(0)
/* Append a C char to an archive_string, resizing as necessary. */
struct archive_string *
__archive_strappend_char(struct archive_string *, char);
#define archive_strappend_char __archive_strappend_char
/* Convert a wide-char string to UTF-8 and append the result. */
struct archive_string *
__archive_strappend_w_utf8(struct archive_string *, const wchar_t *);
#define archive_strappend_w_utf8 __archive_strappend_w_utf8
/* Convert a wide-char string to current locale and append the result. */
/* Returns NULL if conversion fails. */
struct archive_string *
__archive_strappend_w_mbs(struct archive_string *, const wchar_t *);
#define archive_strappend_w_mbs __archive_strappend_w_mbs
/* Basic append operation. */
struct archive_string *
__archive_string_append(struct archive_string *as, const char *p, size_t s);
/* Copy one archive_string to another */
void
__archive_string_copy(struct archive_string *dest, struct archive_string *src);
#define archive_string_copy(dest, src) \
__archive_string_copy(dest, src)
/* Concatenate one archive_string to another */
void
__archive_string_concat(struct archive_string *dest, struct archive_string *src);
#define archive_string_concat(dest, src) \
__archive_string_concat(dest, src)
/* Ensure that the underlying buffer is at least as large as the request. */
struct archive_string *
__archive_string_ensure(struct archive_string *, size_t);
#define archive_string_ensure __archive_string_ensure
/* Append C string, which may lack trailing \0. */
/* The source is declared void * here because this gets used with
* "signed char *", "unsigned char *" and "char *" arguments.
* Declaring it "char *" as with some of the other functions just
* leads to a lot of extra casts. */
struct archive_string *
__archive_strncat(struct archive_string *, const void *, size_t);
#define archive_strncat __archive_strncat
/* Append a C string to an archive_string, resizing as necessary. */
#define archive_strcat(as,p) __archive_string_append((as),(p),strlen(p))
/* Copy a C string to an archive_string, resizing as necessary. */
#define archive_strcpy(as,p) \
((as)->length = 0, __archive_string_append((as), (p), p == NULL ? 0 : strlen(p)))
/* Copy a C string to an archive_string with limit, resizing as necessary. */
#define archive_strncpy(as,p,l) \
((as)->length=0, archive_strncat((as), (p), (l)))
/* Return length of string. */
#define archive_strlen(a) ((a)->length)
/* Set string length to zero. */
#define archive_string_empty(a) ((a)->length = 0)
/* Release any allocated storage resources. */
void __archive_string_free(struct archive_string *);
#define archive_string_free __archive_string_free
/* Like 'vsprintf', but resizes the underlying string as necessary. */
void __archive_string_vsprintf(struct archive_string *, const char *,
va_list);
#define archive_string_vsprintf __archive_string_vsprintf
void __archive_string_sprintf(struct archive_string *, const char *, ...);
#define archive_string_sprintf __archive_string_sprintf
/* Allocates a fresh buffer and converts as (assumed to be UTF-8) into it.
* Returns NULL if conversion failed in any way. */
wchar_t *__archive_string_utf8_w(struct archive_string *as);
#endif
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