/usr/share/libustr-dev/ustr-split-code.h is in libustr-dev 1.0.4-3ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 | /* Copyright (c) 2007 Paul Rosenfeld
James Antill -- See LICENSE file for terms. */
#ifndef USTR_SPLIT_H
#error " Include ustr-split.h before this file."
#endif
#if !defined(USTR_FMT_INTERNAL_H) && !defined(USTR_IO_H)
#include <stdio.h>
#endif
USTR_CONF_i_PROTO
struct Ustr *ustrp__split_buf(struct Ustr_pool *p,
const struct Ustr *s1, size_t *poff,
const void *sep, size_t slen, struct Ustr *ret,
unsigned int flags)
{
size_t len = ustr_len(s1);
size_t off = *poff;
size_t found_pos = 0;
size_t ret_len = 0;
USTR_ASSERT(ustrp__assert_valid(!!p, s1));
USTR_ASSERT_RET(off <= len, USTR_NULL);
if (!slen || (off == len))
{
ustrp__free(p, ret);
errno = 0; /* only way to tell between FAILURE and END */
return (USTR_NULL);
}
/* Separator not found, just return the rest of the string */
if (!(found_pos = ustr_srch_buf_fwd(s1, off, sep, slen)))
{
ret_len = len - off;
*poff = len;
goto copy_buf;
}
/* Set the offset for the next, must skip sep */
*poff = (found_pos - 1) + slen;
if (!(flags & (USTR_FLAG_SPLIT_RET_SEP | USTR_FLAG_SPLIT_RET_NON)))
{
const char *ptr = ustr_cstr(s1);
while (((len - *poff) >= slen) && !memcmp(ptr + *poff, sep, slen))
*poff += slen;
}
/* If we don't wish to return blanks or separators, we might get "a,,b" with
* sep="," so we need to skip the first "found" separator -- so just try
* again */
if (((found_pos - 1) == off) &&
!(flags & (USTR_FLAG_SPLIT_RET_SEP | USTR_FLAG_SPLIT_RET_NON)))
return (ustrp__split_buf(p, s1, poff, sep, slen, ret, flags));
ret_len = (found_pos - 1) - off;
if (flags & USTR_FLAG_SPLIT_RET_SEP) /* Include sep in the return value */
ret_len += slen;
copy_buf:
if (ret)
{
if (!ustrp__set_subustr(p, &ret, s1, off + 1, ret_len))
{
ustrp__free(p, ret);
return (USTR_NULL);
}
return (ret);
}
if (flags & USTR_FLAG_SPLIT_KEEP_CONF)
return (ustrp__dup_subustr(p, s1, off + 1, ret_len));
return (ustrp__dupx_buf(p, USTR__DUPX_DEF, ustr_cstr(s1) + off, ret_len));
}
USTR_CONF_I_PROTO
struct Ustr *ustr_split_buf(const struct Ustr *s1, size_t *off,
const void *sep, size_t slen, struct Ustr *ret,
unsigned int flags)
{ return (ustrp__split_buf(0, s1, off, sep, slen, ret, flags)); }
USTR_CONF_I_PROTO
struct Ustrp *ustrp_split_buf(struct Ustr_pool *p,
const struct Ustrp *s1, size_t *off,
const void *sep, size_t slen, struct Ustrp *ret,
unsigned int flags)
{ return (USTRP(ustrp__split_buf(p, &s1->s, off, sep, slen, &ret->s, flags))); }
USTR_CONF_I_PROTO
struct Ustr *ustr_split(const struct Ustr *s1, size_t *off,
const struct Ustr *sep, struct Ustr *ret,
unsigned int flags)
{
USTR_ASSERT(ustrp__assert_valid(0, sep));
return (ustrp__split_buf(0, s1,off,ustr_cstr(sep),ustr_len(sep), ret, flags));
}
USTR_CONF_I_PROTO
struct Ustrp *ustrp_split(struct Ustr_pool *p,
const struct Ustrp *s1, size_t *off,
const struct Ustrp *sep, struct Ustrp *ret,
unsigned int flags)
{
USTR_ASSERT(ustrp_assert_valid(sep));
return (USTRP(ustrp__split_buf(p, &s1->s, off, ustrp_cstr(sep),ustrp_len(sep),
&ret->s, flags)));
}
USTR_CONF_i_PROTO
struct Ustr *ustrp__split_spn_chrs(struct Ustr_pool *p, const struct Ustr *s1,
size_t *poff, const char *seps, size_t slen,
struct Ustr *ret, unsigned int flags)
{
size_t len = ustr_len(s1);
size_t off = *poff;
size_t spn = 0;
size_t sep = 0;
size_t ret_len = 0;
USTR_ASSERT(ustrp__assert_valid(!!p, s1));
USTR_ASSERT_RET(off <= len, USTR_NULL);
if (!slen || (off == len))
{
ustrp__free(p, ret);
errno = 0; /* only way to tell between FAILURE and END */
return (USTR_NULL);
}
spn = ustr_cspn_chrs_fwd(s1, off, seps, slen);
if (!spn && !(flags & (USTR_FLAG_SPLIT_RET_SEP | USTR_FLAG_SPLIT_RET_NON)))
{
*poff += ustr_spn_chrs_fwd(s1, off, seps, slen);
return (ustrp__split_spn_chrs(p, s1, poff, seps, slen, ret, flags));
}
/* if there's any data left the first byte must be in seps */
if (flags & (USTR_FLAG_SPLIT_RET_SEP | USTR_FLAG_SPLIT_RET_NON))
sep = !((off + spn) == len);
else
sep = ustr_spn_chrs_fwd(s1, off + spn, seps, slen);
USTR_ASSERT(!sep == !ustr_spn_chrs_fwd(s1, off + spn, seps, slen));
*poff += spn + sep;
ret_len = spn;
if (flags & USTR_FLAG_SPLIT_RET_SEP) /* Include seps in the return value */
ret_len += sep;
if (ret)
{
if (!ustrp__set_subustr(p, &ret, s1, off + 1, ret_len))
return (USTR_NULL);
return (ret);
}
if (flags & USTR_FLAG_SPLIT_KEEP_CONF)
return (ustrp__dup_subustr(p, s1, off + 1, ret_len));
return (ustrp__dupx_buf(p, USTR__DUPX_DEF, ustr_cstr(s1) + off, ret_len));
}
USTR_CONF_I_PROTO
struct Ustr *ustr_split_spn_chrs(const struct Ustr *s1, size_t *poff,
const char *seps, size_t slen,
struct Ustr *ret, unsigned int flags)
{ return (ustrp__split_spn_chrs(0, s1, poff, seps, slen, ret, flags)); }
USTR_CONF_I_PROTO
struct Ustrp *ustrp_split_spn_chrs(struct Ustr_pool *p, const struct Ustrp *s1,
size_t *poff, const char *seps, size_t slen,
struct Ustrp *ret, unsigned int flags)
{ return (USTRP(ustrp__split_spn_chrs(p, &s1->s, poff, seps, slen,
&ret->s, flags))); }
USTR_CONF_I_PROTO
struct Ustr *ustr_split_spn(const struct Ustr *s1, size_t *off,
const struct Ustr *sep, struct Ustr *ret,
unsigned int flags)
{
USTR_ASSERT(ustrp__assert_valid(0, sep));
return (ustrp__split_spn_chrs(0, s1, off, ustr_cstr(sep), ustr_len(sep),
ret, flags));
}
USTR_CONF_I_PROTO
struct Ustrp *ustrp_split_spn(struct Ustr_pool *p,
const struct Ustrp *s1, size_t *off,
const struct Ustrp *sep, struct Ustrp *ret,
unsigned int flags)
{
USTR_ASSERT(ustrp_assert_valid(sep));
return (USTRP(ustrp__split_spn_chrs(p, &s1->s, off, ustrp_cstr(sep),
ustrp_len(sep), &ret->s, flags)));
}
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