bstraux.h

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/* Copyright 2002-2015 Paul Hsieh
 * This file is part of Bstrlib.
 *
 * 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.
 *
 *    3. Neither the name of bstrlib nor the names of its contributors may be
 *       used to endorse or promote products derived from this software
 *       without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * GNU General Public License Version 2 (the "GPL").
 */

 
#ifndef BSTRAUX_H
#define BSTRAUX_H
 
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
 
#include <time.h>
#include <bstrlib.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* Safety mechanisms */
#define bstrDeclare(b) \
  bstring(b) = NULL
 
#define bstrFree(b) \
do { \
    if ((b) != NULL && (b)->slen >= 0 && (b)->mlen >= (b)->slen) { \
        bdestroy(b); \
        (b) = NULL; \
    } \
} while (0)
 
/* Backward compatibilty with previous versions of Bstrlib */
#if !defined(BSTRLIB_REDUCE_NAMESPACE_POLLUTION)
#define bAssign(a, b) \
    ((bassign)((a), (b)))
 
#define bSubs(b, pos, len, a, c) \
    ((breplace)((b),(pos),(len),(a),(unsigned char)(c)))
 
#define bStrchr(b, c) \
    ((bstrchr)((b), (c)))
 
#define bStrchrFast(b, c) \
    ((bstrchr)((b), (c)))
 
#define bCatCstr(b, s) \
    ((bcatcstr)((b), (s)))
 
#define bCatBlk(b, s, len) \
    ((bcatblk)((b), (s), (len)))
 
#define bCatStatic(b, s) \
    bcatStatic(b, s)
 
#define bTrunc(b, n) \
    ((btrunc)((b), (n)))
 
#define bReplaceAll(b, find, repl, pos) \
    ((bfindreplace)((b),(find),(repl),(pos)))
 
#define bUppercase(b) \
    ((btoupper)(b))
 
#define bLowercase(b) \
    ((btolower)(b))
 
#define bCaselessCmp(a, b) \
    ((bstricmp)((a), (b)))
 
#define bCaselessNCmp(a, b, n) \
    ((bstrnicmp)((a), (b), (n)))
 
#define bBase64Decode(b) \
    (bBase64DecodeEx((b), NULL))
 
#define bUuDecode(b) \
    (bUuDecodeEx((b), NULL))
#endif
 
/* Unusual functions */

BSTR_PUBLIC struct bStream *
bsFromBstr(const bstring b);

BSTR_PUBLIC bstring
bTail(bstring b, int n);

BSTR_PUBLIC bstring
bHead(bstring b, int n);

BSTR_PUBLIC int
bSetCstrChar(bstring a, int pos, char c);

BSTR_PUBLIC int
bSetChar(bstring b, int pos, char c);

BSTR_PUBLIC int
bFill(bstring a, char c, int len);

BSTR_PUBLIC int
bReplicate(bstring b, int n);

BSTR_PUBLIC int
bReverse(bstring b);

BSTR_PUBLIC int
bInsertChrs(bstring b, int pos, int len, unsigned char c, unsigned char fill);

BSTR_PUBLIC bstring
bStrfTime(const char * fmt, const struct tm * timeptr);
 
#define bAscTime(t) (bStrfTime ("%c\n", (t)))
 
#define bCTime(t)   ((t) ? bAscTime (localtime (t)) : NULL)
 
/* Spacing formatting */

BSTR_PUBLIC int
bJustifyLeft(bstring b, int space);

BSTR_PUBLIC int
bJustifyRight(bstring b, int width, int space);

BSTR_PUBLIC int
bJustifyMargin(bstring b, int width, int space);

BSTR_PUBLIC int
bJustifyCenter(bstring b, int width, int space);
 
/* Esoteric standards specific functions */

BSTR_PUBLIC char *
bStr2NetStr(const bstring b);

BSTR_PUBLIC bstring
bNetStr2Bstr(const char *buf);

BSTR_PUBLIC bstring
bBase64Encode(const bstring b);

BSTR_PUBLIC bstring
bBase64DecodeEx(const bstring b, int *boolTruncError);

BSTR_PUBLIC struct bStream *
bsUuDecode(struct bStream *sInp, int *badlines);

 
BSTR_PUBLIC bstring
bUuDecodeEx(const bstring src, int *badlines);

BSTR_PUBLIC bstring
bUuEncode(const bstring src);

BSTR_PUBLIC bstring
bYEncode(const bstring src);

BSTR_PUBLIC bstring
bYDecode(const bstring src);

BSTR_PUBLIC int
bSGMLEncode(bstring b);
 
/* Writable stream */
typedef int
(*bNwrite)(const void *buf, size_t elsize, size_t nelem, void *parm);

BSTR_PUBLIC struct bwriteStream *
bwsOpen(bNwrite writeFn, void *parm);

BSTR_PUBLIC int
bwsWriteBstr(struct bwriteStream *stream, const bstring b);

BSTR_PUBLIC int
bwsWriteBlk(struct bwriteStream *stream, void *blk, int len);

BSTR_PUBLIC int
bwsWriteFlush(struct bwriteStream *stream);

BSTR_PUBLIC int
bwsIsEOF(const struct bwriteStream *stream);

BSTR_PUBLIC int
bwsBuffLength(struct bwriteStream *stream, int sz);

BSTR_PUBLIC void *
bwsClose(struct bwriteStream *stream);
 
/* Security functions */
#define bSecureDestroy(b) \
do { \
    if ((b) && (b)->mlen > 0 && (b)->data) { \
        (void)memset((b)->data, 0, (size_t)(b)->mlen); \
    } \
    (void)bdestroy((b)); \
} while (0)
 
#define bSecureWriteProtect(t) \
do { \
    if ((t).mlen >= 0) { \
        if ((t).mlen > (t).slen)) { \
            (void)memset((t).data + (t).slen, 0, \
                     (size_t)(t).mlen - (t).slen); \
        } \
        (t).mlen = -1; \
    } \
} while (0)

BSTR_PUBLIC bstring
bSecureInput(int maxlen, int termchar, bNgetc vgetchar, void *vgcCtx);
 
#ifdef __cplusplus
}
#endif
 
#endif /* BSTRAUX_H */