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/* Copyright (c) 2007 James Antill -- See LICENSE file for terms. */
#ifndef USTR_SPN_H
#error " You should have already included ustr-spn.h, or just include ustr.h."
#endif
#ifndef USTR_SRCH_H
#error " You should have already included ustr-srch.h, or just include ustr.h."
#endif
USTR_CONF_I_PROTO
size_t ustr_spn_chr_fwd(const struct Ustr *s1, size_t off, char chr)
{
const char *ptr = 0;
size_t len = 0;
size_t clen = 0;
USTR_ASSERT(ustr_assert_valid(s1));
ptr = ustr_cstr(s1);
len = ustr_len(s1);
USTR_ASSERT_RET(off <= len, 0);
ptr += off;
len -= off;
clen = len;
while (len)
{
if (*ptr != chr)
break;
++ptr;
--len;
}
return (clen - len);
}
USTR_CONF_I_PROTO
size_t ustr_spn_chr_rev(const struct Ustr *s1, size_t off, char chr)
{
const char *ptr = 0;
size_t len = 0;
size_t clen = 0;
USTR_ASSERT(ustr_assert_valid(s1));
ptr = ustr_cstr(s1);
len = ustr_len(s1);
USTR_ASSERT_RET(off <= len, 0);
len -= off;
clen = len;
ptr += len;
while (len)
{
--ptr;
if (*ptr != chr)
break;
--len;
}
return (clen - len);
}
USTR_CONF_I_PROTO size_t ustr_spn_chrs_fwd(const struct Ustr *s1, size_t off,
const char *chrs, size_t slen)
{
const char *ptr = 0;
size_t len = 0;
size_t clen = 0;
USTR_ASSERT(chrs);
if (slen == 1)
return (ustr_spn_chr_fwd(s1, off, *chrs));
USTR_ASSERT(ustr_assert_valid(s1));
ptr = ustr_cstr(s1);
len = ustr_len(s1);
USTR_ASSERT_RET(off <= len, 0);
ptr += off;
len -= off;
clen = len;
while (len)
{
if (!memchr(chrs, *ptr, slen))
break;
++ptr;
--len;
}
return (clen - len);
}
USTR_CONF_I_PROTO size_t ustr_spn_chrs_rev(const struct Ustr *s1, size_t off,
const char *chrs, size_t slen)
{
const char *ptr = 0;
size_t len = 0;
size_t clen = 0;
USTR_ASSERT(chrs);
if (slen == 1)
return (ustr_spn_chr_rev(s1, off, *chrs));
USTR_ASSERT(ustr_assert_valid(s1));
ptr = ustr_cstr(s1);
len = clen = ustr_len(s1);
USTR_ASSERT_RET(off <= len, 0);
len -= off;
clen = len;
ptr += len;
while (len)
{
--ptr;
if (!memchr(chrs, *ptr, slen))
break;
--len;
}
return (clen - len);
}
USTR_CONF_I_PROTO
size_t ustr_cspn_chr_fwd(const struct Ustr *s1, size_t off, char chr)
{
size_t f_pos = ustr_srch_chr_fwd(s1, off, chr);
if (!f_pos)
return (ustr_len(s1) - off);
return (f_pos - off - 1);
}
USTR_CONF_I_PROTO
size_t ustr_cspn_chr_rev(const struct Ustr *s1, size_t off, char chr)
{
size_t f_pos = ustr_srch_chr_rev(s1, off, chr);
if (!f_pos)
return (ustr_len(s1) - off);
return ((ustr_len(s1) - f_pos) - off);
}
USTR_CONF_I_PROTO size_t ustr_cspn_chrs_fwd(const struct Ustr *s1, size_t off,
const char *chrs, size_t slen)
{
const char *ptr = 0;
size_t len = 0;
size_t clen = 0;
USTR_ASSERT(chrs);
if (slen == 1)
return (ustr_cspn_chr_fwd(s1, off, *chrs));
USTR_ASSERT(ustr_assert_valid(s1));
ptr = ustr_cstr(s1);
len = ustr_len(s1);
USTR_ASSERT_RET(off <= len, 0);
ptr += off;
len -= off;
clen = len;
while (len)
{
if (memchr(chrs, *ptr, slen))
break;
++ptr;
--len;
}
return (clen - len);
}
USTR_CONF_I_PROTO size_t ustr_cspn_chrs_rev(const struct Ustr *s1, size_t off,
const char *chrs, size_t slen)
{
const char *ptr = 0;
size_t len = 0;
size_t clen = 0;
USTR_ASSERT(chrs);
if (slen == 1)
return (ustr_cspn_chr_rev(s1, off, *chrs));
USTR_ASSERT(ustr_assert_valid(s1));
ptr = ustr_cstr(s1);
len = ustr_len(s1);
USTR_ASSERT_RET(off <= len, 0);
len -= off;
clen = len;
ptr += len;
while (len)
{
--ptr;
if (memchr(chrs, *ptr, slen))
break;
--len;
}
return (clen - len);
}
#ifdef USTR_UTF8_H
USTR_CONF_I_PROTO size_t ustr_utf8_spn_chrs_fwd(const struct Ustr*s1,size_t off,
const char *pchrs, size_t slen)
{
const unsigned char *chrs = (const unsigned char *)pchrs;
const unsigned char *ptr = 0;
size_t ret = 0;
USTR_ASSERT(chrs);
USTR_ASSERT(ustr_assert_valid(s1));
ptr = (const unsigned char *)ustr_cstr(s1);
if (off)
off = ustr_utf8_chars2bytes(s1, 1, off, 0);
ptr += off;
while (*ptr)
{
const unsigned char *bptr = ptr;
ptr = ustr__utf8_next(ptr);
if (!ptr || !USTR__SYS_MEMMEM(chrs, slen, bptr, ptr - bptr))
break;
++ret;
}
return (ret);
}
USTR_CONF_I_PROTO size_t ustr_utf8_spn_chrs_rev(const struct Ustr*s1,size_t off,
const char *pchrs, size_t slen)
{
const unsigned char *chrs = (const unsigned char *)pchrs;
const unsigned char *ptr = 0;
size_t len = 0;
size_t ret = 0;
USTR_ASSERT(chrs);
USTR_ASSERT(ustr_assert_valid(s1));
ptr = (const unsigned char *)ustr_cstr(s1);
len = ustr_len(s1);
if (off)
{
size_t ulen = ustr_utf8_len(s1);
size_t dummy;
off = ustr_utf8_chars2bytes(s1, ulen - off, off, &dummy);
}
len -= off;
while (len)
{
const unsigned char *eptr = ptr + len;
const unsigned char *bptr = ustr__utf8_prev(eptr, len);
if (!bptr || !USTR__SYS_MEMMEM(chrs, slen, bptr, eptr - bptr))
break;
++ret;
len -= (eptr - bptr);
}
return (ret);
}
USTR_CONF_I_PROTO
size_t ustr_utf8_cspn_chrs_fwd(const struct Ustr *s1, size_t off,
const char *pchrs, size_t slen)
{
const unsigned char *chrs = (const unsigned char *)pchrs;
const unsigned char *ptr = 0;
size_t ret = 0;
USTR_ASSERT(chrs);
USTR_ASSERT(ustr_assert_valid(s1));
ptr = (const unsigned char *)ustr_cstr(s1);
if (off)
off = ustr_utf8_chars2bytes(s1, 1, off, 0);
ptr += off;
while (*ptr)
{
const unsigned char *bptr = ptr;
ptr = ustr__utf8_next(ptr);
if (USTR__SYS_MEMMEM(chrs, slen, bptr, ptr - bptr))
break;
++ret;
}
return (ret);
}
USTR_CONF_I_PROTO
size_t ustr_utf8_cspn_chrs_rev(const struct Ustr *s1, size_t off,
const char *pchrs, size_t slen)
{
const unsigned char *chrs = (const unsigned char *)pchrs;
const unsigned char *ptr = 0;
size_t len = 0;
size_t ret = 0;
USTR_ASSERT(chrs);
USTR_ASSERT(ustr_assert_valid(s1));
ptr = (const unsigned char *)ustr_cstr(s1);
len = ustr_len(s1);
if (off)
{
size_t ulen = ustr_utf8_len(s1);
size_t dummy;
off = ustr_utf8_chars2bytes(s1, ulen - off, off, &dummy);
}
len -= off;
while (len)
{
const unsigned char *eptr = ptr + len;
const unsigned char *bptr = ustr__utf8_prev(eptr, len);
if (!bptr || USTR__SYS_MEMMEM(chrs, slen, bptr, eptr - bptr))
break;
++ret;
len -= (eptr - bptr);
}
return (ret);
}
#endif
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