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/*-
* Copyright (c) 2003-2010 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: head/lib/libarchive/archive_string.h 201092 2009-12-28 02:26:06Z kientzle $
*
*/
#ifndef __LIBARCHIVE_BUILD
#ifndef __LIBARCHIVE_TEST
#error This header is only to be used internally to libarchive.
#endif
#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
#include "archive.h"
/*
* Basic resizable/reusable string support similar to Java's "StringBuffer."
*
* Unlike sbuf(9), the buffers here are fully reusable and track the
* length throughout.
*/
struct archive_string {
char *s; /* Pointer to the storage */
size_t length; /* Length of 's' in characters */
size_t buffer_length; /* Length of malloc-ed storage in bytes. */
};
struct archive_wstring {
wchar_t *s; /* Pointer to the storage */
size_t length; /* Length of 's' in characters */
size_t buffer_length; /* Length of malloc-ed storage in bytes. */
};
struct archive_string_conv;
/* 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);
/* Ditto for a wchar_t and an archive_wstring. */
struct archive_wstring *
archive_wstrappend_wchar(struct archive_wstring *, wchar_t);
/* Convert a Unicode string to current locale and append the result. */
/* Returns -1 if conversion fails. */
int
archive_string_append_from_wcs(struct archive_string *, const wchar_t *, size_t);
/* Create a string conversion object.
* Return NULL and set a error message if the conversion is not supported
* on the platform. */
struct archive_string_conv *
archive_string_conversion_to_charset(struct archive *, const char *, int);
struct archive_string_conv *
archive_string_conversion_from_charset(struct archive *, const char *, int);
/* Create the default string conversion object for reading/writing an archive.
* Return NULL if the conversion is unneeded.
* Note: On non Windows platform this always returns NULL.
*/
struct archive_string_conv *
archive_string_default_conversion_for_read(struct archive *);
struct archive_string_conv *
archive_string_default_conversion_for_write(struct archive *);
/* Dispose of a string conversion object. */
void
archive_string_conversion_free(struct archive *);
const char *
archive_string_conversion_charset_name(struct archive_string_conv *);
void
archive_string_conversion_set_opt(struct archive_string_conv *, int);
#define SCONV_SET_OPT_UTF8_LIBARCHIVE2X 1
#define SCONV_SET_OPT_NORMALIZATION_C 2
#define SCONV_SET_OPT_NORMALIZATION_D 4
/* Copy one archive_string to another in locale conversion.
* Return -1 if conversion failes. */
int
archive_strncpy_l(struct archive_string *, const void *, size_t,
struct archive_string_conv *);
/* Copy one archive_string to another in locale conversion.
* Return -1 if conversion failes. */
int
archive_strncat_l(struct archive_string *, const void *, size_t,
struct archive_string_conv *);
/* Copy one archive_string to another */
#define archive_string_copy(dest, src) \
((dest)->length = 0, archive_string_concat((dest), (src)))
#define archive_wstring_copy(dest, src) \
((dest)->length = 0, archive_wstring_concat((dest), (src)))
/* Concatenate one archive_string to another */
void archive_string_concat(struct archive_string *dest, struct archive_string *src);
void archive_wstring_concat(struct archive_wstring *dest, struct archive_wstring *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);
struct archive_wstring *
archive_wstring_ensure(struct archive_wstring *, size_t);
/* 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);
struct archive_wstring *
archive_wstrncat(struct archive_wstring *, const wchar_t *, size_t);
/* Append a C string to an archive_string, resizing as necessary. */
struct archive_string *
archive_strcat(struct archive_string *, const void *);
struct archive_wstring *
archive_wstrcat(struct archive_wstring *, const wchar_t *);
/* Copy a C string to an archive_string, resizing as necessary. */
#define archive_strcpy(as,p) \
archive_strncpy((as), (p), ((p) == NULL ? 0 : strlen(p)))
#define archive_wstrcpy(as,p) \
archive_wstrncpy((as), (p), ((p) == NULL ? 0 : wcslen(p)))
#define archive_strcpy_l(as,p,lo) \
archive_strncpy_l((as), (p), ((p) == NULL ? 0 : strlen(p)), (lo))
/* 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)))
#define archive_wstrncpy(as,p,l) \
((as)->length = 0, archive_wstrncat((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)
#define archive_wstring_empty(a) ((a)->length = 0)
/* Release any allocated storage resources. */
void archive_string_free(struct archive_string *);
void archive_wstring_free(struct archive_wstring *);
/* Like 'vsprintf', but resizes the underlying string as necessary. */
/* Note: This only implements a small subset of standard printf functionality. */
void archive_string_vsprintf(struct archive_string *, const char *,
va_list) __LA_PRINTF(2, 0);
void archive_string_sprintf(struct archive_string *, const char *, ...)
__LA_PRINTF(2, 3);
/* Translates from MBS to Unicode. */
/* Returns non-zero if conversion failed in any way. */
int archive_wstring_append_from_mbs(struct archive_wstring *dest,
const char *, size_t);
/* A "multistring" can hold Unicode, UTF8, or MBS versions of
* the string. If you set and read the same version, no translation
* is done. If you set and read different versions, the library
* will attempt to transparently convert.
*/
struct archive_mstring {
struct archive_string aes_mbs;
struct archive_string aes_utf8;
struct archive_wstring aes_wcs;
struct archive_string aes_mbs_in_locale;
/* Bitmap of which of the above are valid. Because we're lazy
* about malloc-ing and reusing the underlying storage, we
* can't rely on NULL pointers to indicate whether a string
* has been set. */
int aes_set;
#define AES_SET_MBS 1
#define AES_SET_UTF8 2
#define AES_SET_WCS 4
};
void archive_mstring_clean(struct archive_mstring *);
void archive_mstring_copy(struct archive_mstring *dest, struct archive_mstring *src);
int archive_mstring_get_mbs(struct archive *, struct archive_mstring *, const char **);
int archive_mstring_get_utf8(struct archive *, struct archive_mstring *, const char **);
int archive_mstring_get_wcs(struct archive *, struct archive_mstring *, const wchar_t **);
int archive_mstring_get_mbs_l(struct archive_mstring *, const char **,
size_t *, struct archive_string_conv *);
int archive_mstring_copy_mbs(struct archive_mstring *, const char *mbs);
int archive_mstring_copy_mbs_len(struct archive_mstring *, const char *mbs,
size_t);
int archive_mstring_copy_utf8(struct archive_mstring *, const char *utf8);
int archive_mstring_copy_wcs(struct archive_mstring *, const wchar_t *wcs);
int archive_mstring_copy_wcs_len(struct archive_mstring *,
const wchar_t *wcs, size_t);
int archive_mstring_copy_mbs_len_l(struct archive_mstring *,
const char *mbs, size_t, struct archive_string_conv *);
int archive_mstring_update_utf8(struct archive *, struct archive_mstring *aes, const char *utf8);
#endif
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