110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/*
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* $Id$
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*
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Copyright (c) 2006-2019 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if !defined(char_t) && !defined(strcat) && !defined(strxcat)
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# error Never include this file
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#endif
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qse_size_t strcat (char_t* buf, const char_t* str)
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{
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char_t* org = buf;
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buf += strlen(buf);
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while ((*buf++ = *str++) != T('\0'));
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return buf - org - 1;
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}
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qse_size_t strncat (char_t* buf, const char_t* str, qse_size_t len)
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{
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qse_size_t x;
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const char_t* end = str + len;
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x = strlen(buf); buf += x;
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while (str < end) *buf++ = *str++;
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*buf = T('\0');
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return len + x;
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}
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qse_size_t strcatn (char_t* buf, const char_t* str, qse_size_t n)
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{
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qse_size_t x;
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char_t* org = buf;
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const char_t* end = str + n;
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x = strlen(buf); buf += x;
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while (str < end)
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{
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/* copies not more than n characters and stop if '\0' is met */
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if ((*buf++ = *str++) == T('\0')) return buf - org - 1;
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}
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return n + x;
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}
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qse_size_t strxcat (char_t* buf, qse_size_t bsz, const char_t* str)
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{
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char_t* p, * p2;
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qse_size_t blen;
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blen = strlen(buf);
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if (blen >= bsz) return blen; /* something wrong */
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p = buf + blen;
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p2 = buf + bsz - 1;
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while (p < p2)
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{
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if (*str == T('\0')) break;
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*p++ = *str++;
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}
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if (bsz > 0) *p = T('\0');
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return p - buf;
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}
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qse_size_t strxncat (char_t* buf, qse_size_t bsz, const char_t* str, qse_size_t len)
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{
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char_t* p, * p2;
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const char_t* end;
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qse_size_t blen;
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blen = strlen(buf);
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if (blen >= bsz) return blen; /* something wrong */
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p = buf + blen;
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p2 = buf + bsz - 1;
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end = str + len;
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while (p < p2)
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{
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if (str >= end) break;
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*p++ = *str++;
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}
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if (bsz > 0) *p = T('\0');
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return p - buf;
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}
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