mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
f8c35626c4
r751: Change __archive_strncat() to use a void * source, which reduces the amount of casting needed to use this with "char", "signed char" and "unsigned char". r752: Use additions instead of multiplications when growing buffer; faster and less chance of overflow.
145 lines
5.4 KiB
C
145 lines
5.4 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*/
|
|
|
|
#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
|