2 * Copyright (c) 2003-2007 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #ifndef ARCHIVE_STRING_H_INCLUDED
30 #define ARCHIVE_STRING_H_INCLUDED
34 #include <stdlib.h> /* required for wchar_t on some systems */
44 * Basic resizable/reusable string support a la Java's "StringBuffer."
46 * Unlike sbuf(9), the buffers here are fully reusable and track the
49 * Note that all visible symbols here begin with "__archive" as they
50 * are internal symbols not intended for anyone outside of this library
54 struct archive_string {
55 char *s; /* Pointer to the storage */
56 size_t length; /* Length of 's' */
57 size_t buffer_length; /* Length of malloc-ed storage */
60 /* Initialize an archive_string object on the stack or elsewhere. */
61 #define archive_string_init(a) \
62 do { (a)->s = NULL; (a)->length = 0; (a)->buffer_length = 0; } while(0)
64 /* Append a C char to an archive_string, resizing as necessary. */
65 struct archive_string *
66 __archive_strappend_char(struct archive_string *, char);
67 #define archive_strappend_char __archive_strappend_char
69 /* Convert a wide-char string to UTF-8 and append the result. */
70 struct archive_string *
71 __archive_strappend_w_utf8(struct archive_string *, const wchar_t *);
72 #define archive_strappend_w_utf8 __archive_strappend_w_utf8
74 /* Convert a wide-char string to current locale and append the result. */
75 /* Returns NULL if conversion fails. */
76 struct archive_string *
77 __archive_strappend_w_mbs(struct archive_string *, const wchar_t *);
78 #define archive_strappend_w_mbs __archive_strappend_w_mbs
80 /* Basic append operation. */
81 struct archive_string *
82 __archive_string_append(struct archive_string *as, const char *p, size_t s);
84 /* Copy one archive_string to another */
86 __archive_string_copy(struct archive_string *dest, struct archive_string *src);
87 #define archive_string_copy(dest, src) \
88 __archive_string_copy(dest, src)
90 /* Concatenate one archive_string to another */
92 __archive_string_concat(struct archive_string *dest, struct archive_string *src);
93 #define archive_string_concat(dest, src) \
94 __archive_string_concat(dest, src)
96 /* Ensure that the underlying buffer is at least as large as the request. */
97 struct archive_string *
98 __archive_string_ensure(struct archive_string *, size_t);
99 #define archive_string_ensure __archive_string_ensure
101 /* Append C string, which may lack trailing \0. */
102 /* The source is declared void * here because this gets used with
103 * "signed char *", "unsigned char *" and "char *" arguments.
104 * Declaring it "char *" as with some of the other functions just
105 * leads to a lot of extra casts. */
106 struct archive_string *
107 __archive_strncat(struct archive_string *, const void *, size_t);
108 #define archive_strncat __archive_strncat
110 /* Append a C string to an archive_string, resizing as necessary. */
111 #define archive_strcat(as,p) __archive_string_append((as),(p),strlen(p))
113 /* Copy a C string to an archive_string, resizing as necessary. */
114 #define archive_strcpy(as,p) \
115 ((as)->length = 0, __archive_string_append((as), (p), p == NULL ? 0 : strlen(p)))
117 /* Copy a C string to an archive_string with limit, resizing as necessary. */
118 #define archive_strncpy(as,p,l) \
119 ((as)->length=0, archive_strncat((as), (p), (l)))
121 /* Return length of string. */
122 #define archive_strlen(a) ((a)->length)
124 /* Set string length to zero. */
125 #define archive_string_empty(a) ((a)->length = 0)
127 /* Release any allocated storage resources. */
128 void __archive_string_free(struct archive_string *);
129 #define archive_string_free __archive_string_free
131 /* Like 'vsprintf', but resizes the underlying string as necessary. */
132 void __archive_string_vsprintf(struct archive_string *, const char *,
134 #define archive_string_vsprintf __archive_string_vsprintf
136 void __archive_string_sprintf(struct archive_string *, const char *, ...);
137 #define archive_string_sprintf __archive_string_sprintf
139 /* Allocates a fresh buffer and converts as (assumed to be UTF-8) into it.
140 * Returns NULL if conversion failed in any way. */
141 wchar_t *__archive_string_utf8_w(struct archive_string *as);