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freebsd-skq/usr.bin/sort/bwstring.c
gabor 02feec4a45 - Only use multi-threading for large files 
- Do not use mmap() by default; it can be enabled by --mmap
- Add some minor optimizations for -u
- Update manual page according to the changes

Submitted by:	Oleg Moskalenko <oleg.moskalenko@citrix.com>
2012-05-25 09:30:16 +00:00

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/*-
* Copyright (C) 2009 Gabor Kovesdan <gabor@FreeBSD.org>
* Copyright (C) 2012 Oleg Moskalenko <oleg.moskalenko@citrix.com>
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <ctype.h>
#include <errno.h>
#include <err.h>
#include <langinfo.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <wctype.h>
#include "bwstring.h"
#include "sort.h"
bool byte_sort;
static wchar_t **wmonths;
static unsigned char **cmonths;
/* initialise months */
void
initialise_months(void)
{
const nl_item item[12] = { ABMON_1, ABMON_2, ABMON_3, ABMON_4,
ABMON_5, ABMON_6, ABMON_7, ABMON_8, ABMON_9, ABMON_10,
ABMON_11, ABMON_12 };
unsigned char *tmp;
size_t len;
if (MB_CUR_MAX == 1) {
if (cmonths == NULL) {
unsigned char *m;
cmonths = sort_malloc(sizeof(unsigned char*) * 12);
for (int i = 0; i < 12; i++) {
cmonths[i] = NULL;
tmp = (unsigned char *) nl_langinfo(item[i]);
if (tmp == NULL)
continue;
if (debug_sort)
printf("month[%d]=%s\n", i, tmp);
len = strlen(tmp);
if (len < 1)
continue;
while (isblank(*tmp))
++tmp;
m = sort_malloc(len + 1);
memcpy(m, tmp, len + 1);
m[len] = '\0';
for (unsigned int j = 0; j < len; j++)
m[j] = toupper(m[j]);
cmonths[i] = m;
}
}
} else {
if (wmonths == NULL) {
wchar_t *m;
wmonths = sort_malloc(sizeof(wchar_t *) * 12);
for (int i = 0; i < 12; i++) {
wmonths[i] = NULL;
tmp = (unsigned char *) nl_langinfo(item[i]);
if (tmp == NULL)
continue;
if (debug_sort)
printf("month[%d]=%s\n", i, tmp);
len = strlen(tmp);
if (len < 1)
continue;
while (isblank(*tmp))
++tmp;
m = sort_malloc(SIZEOF_WCHAR_STRING(len + 1));
if (mbstowcs(m, tmp, len) == ((size_t) -1))
continue;
m[len] = L'\0';
for (unsigned int j = 0; j < len; j++)
m[j] = towupper(m[j]);
wmonths[i] = m;
}
}
}
}
/*
* Compare two wide-character strings
*/
static int
wide_str_coll(const wchar_t *s1, const wchar_t *s2)
{
int ret = 0;
errno = 0;
ret = wcscoll(s1, s2);
if (errno == EILSEQ) {
errno = 0;
ret = wcscmp(s1, s2);
if (errno != 0) {
for (size_t i = 0; ; ++i) {
wchar_t c1 = s1[i];
wchar_t c2 = s2[i];
if (c1 == L'\0')
return ((c2 == L'\0') ? 0 : -1);
if (c2 == L'\0')
return (+1);
if (c1 == c2)
continue;
return ((int)(c1 - c2));
}
}
}
return (ret);
}
/* counterparts of wcs functions */
void
bwsprintf(FILE *f, struct bwstring *bws, const char *prefix, const char *suffix)
{
if (MB_CUR_MAX == 1)
fprintf(f, "%s%s%s", prefix, bws->data.cstr, suffix);
else
fprintf(f, "%s%S%s", prefix, bws->data.wstr, suffix);
}
const void* bwsrawdata(const struct bwstring *bws)
{
return (&(bws->data));
}
size_t bwsrawlen(const struct bwstring *bws)
{
return ((MB_CUR_MAX == 1) ? bws->len : SIZEOF_WCHAR_STRING(bws->len));
}
size_t
bws_memsize(const struct bwstring *bws)
{
return ((MB_CUR_MAX == 1) ? (bws->len + 2 + sizeof(struct bwstring)) :
(SIZEOF_WCHAR_STRING(bws->len + 1) + sizeof(struct bwstring)));
}
void
bws_setlen(struct bwstring *bws, size_t newlen)
{
if (bws && newlen != bws->len && newlen <= bws->len) {
bws->len = newlen;
if (MB_CUR_MAX == 1)
bws->data.cstr[newlen] = '\0';
else
bws->data.wstr[newlen] = L'\0';
}
}
/*
* Allocate a new binary string of specified size
*/
struct bwstring *
bwsalloc(size_t sz)
{
struct bwstring *ret;
if (MB_CUR_MAX == 1)
ret = sort_malloc(sizeof(struct bwstring) + 1 + sz);
else
ret = sort_malloc(sizeof(struct bwstring) +
SIZEOF_WCHAR_STRING(sz + 1));
ret->len = sz;
if (MB_CUR_MAX == 1)
ret->data.cstr[ret->len] = '\0';
else
ret->data.wstr[ret->len] = L'\0';
return (ret);
}
/*
* Create a copy of binary string.
* New string size equals the length of the old string.
*/
struct bwstring *
bwsdup(const struct bwstring *s)
{
if (s == NULL)
return (NULL);
else {
struct bwstring *ret = bwsalloc(s->len);
if (MB_CUR_MAX == 1)
memcpy(ret->data.cstr, s->data.cstr, (s->len));
else
memcpy(ret->data.wstr, s->data.wstr,
SIZEOF_WCHAR_STRING(s->len));
return (ret);
}
}
/*
* Create a new binary string from a raw binary buffer.
*/
struct bwstring *
bwssbdup(const wchar_t *str, size_t len)
{
if (str == NULL)
return ((len == 0) ? bwsalloc(0) : NULL);
else {
struct bwstring *ret;
ret = bwsalloc(len);
if (MB_CUR_MAX == 1)
for (size_t i = 0; i < len; ++i)
ret->data.cstr[i] = (unsigned char) str[i];
else
memcpy(ret->data.wstr, str, SIZEOF_WCHAR_STRING(len));
return (ret);
}
}
/*
* Create a new binary string from a raw binary buffer.
*/
struct bwstring *
bwscsbdup(const unsigned char *str, size_t len)
{
struct bwstring *ret;
ret = bwsalloc(len);
if (str) {
if (MB_CUR_MAX == 1)
memcpy(ret->data.cstr, str, len);
else {
mbstate_t mbs;
const char *s;
size_t charlen, chars, cptr;
charlen = chars = 0;
cptr = 0;
s = (const char *) str;
memset(&mbs, 0, sizeof(mbs));
while (cptr < len) {
size_t n = MB_CUR_MAX;
if (n > len - cptr)
n = len - cptr;
charlen = mbrlen(s + cptr, n, &mbs);
switch (charlen) {
case 0:
/* FALLTHROUGH */
case (size_t) -1:
/* FALLTHROUGH */
case (size_t) -2:
ret->data.wstr[chars++] =
(unsigned char) s[cptr];
++cptr;
break;
default:
n = mbrtowc(ret->data.wstr + (chars++),
s + cptr, charlen, &mbs);
if ((n == (size_t)-1) || (n == (size_t)-2))
/* NOTREACHED */
err(2, "mbrtowc error");
cptr += charlen;
};
}
ret->len = chars;
ret->data.wstr[ret->len] = L'\0';
}
}
return (ret);
}
/*
* De-allocate object memory
*/
void
bwsfree(const struct bwstring *s)
{
if (s)
sort_free(s);
}
/*
* Copy content of src binary string to dst.
* If the capacity of the dst string is not sufficient,
* then the data is truncated.
*/
size_t
bwscpy(struct bwstring *dst, const struct bwstring *src)
{
size_t nums = src->len;
if (nums > dst->len)
nums = dst->len;
dst->len = nums;
if (MB_CUR_MAX == 1) {
memcpy(dst->data.cstr, src->data.cstr, nums);
dst->data.cstr[dst->len] = '\0';
} else {
memcpy(dst->data.wstr, src->data.wstr,
SIZEOF_WCHAR_STRING(nums + 1));
dst->data.wstr[dst->len] = L'\0';
}
return (nums);
}
/*
* Copy content of src binary string to dst,
* with specified number of symbols to be copied.
* If the capacity of the dst string is not sufficient,
* then the data is truncated.
*/
struct bwstring *
bwsncpy(struct bwstring *dst, const struct bwstring *src, size_t size)
{
size_t nums = src->len;
if (nums > dst->len)
nums = dst->len;
if (nums > size)
nums = size;
dst->len = nums;
if (MB_CUR_MAX == 1) {
memcpy(dst->data.cstr, src->data.cstr, nums);
dst->data.cstr[dst->len] = '\0';
} else {
memcpy(dst->data.wstr, src->data.wstr,
SIZEOF_WCHAR_STRING(nums + 1));
dst->data.wstr[dst->len] = L'\0';
}
return (dst);
}
/*
* Copy content of src binary string to dst,
* with specified number of symbols to be copied.
* An offset value can be specified, from the start of src string.
* If the capacity of the dst string is not sufficient,
* then the data is truncated.
*/
struct bwstring *
bwsnocpy(struct bwstring *dst, const struct bwstring *src, size_t offset,
size_t size)
{
if (offset >= src->len) {
dst->data.wstr[0] = 0;
dst->len = 0;
} else {
size_t nums = src->len - offset;
if (nums > dst->len)
nums = dst->len;
if (nums > size)
nums = size;
dst->len = nums;
if (MB_CUR_MAX == 1) {
memcpy(dst->data.cstr, src->data.cstr + offset,
(nums));
dst->data.cstr[dst->len] = '\0';
} else {
memcpy(dst->data.wstr, src->data.wstr + offset,
SIZEOF_WCHAR_STRING(nums));
dst->data.wstr[dst->len] = L'\0';
}
}
return (dst);
}
/*
* Write binary string to the file.
* The output is ended either with '\n' (nl == true)
* or '\0' (nl == false).
*/
int
bwsfwrite(struct bwstring *bws, FILE *f, bool zero_ended)
{
if (MB_CUR_MAX == 1) {
size_t len = bws->len;
if (!zero_ended) {
bws->data.cstr[len] = '\n';
if (fwrite(bws->data.cstr, len + 1, 1, f) < 1)
err(2, NULL);
bws->data.cstr[len] = '\0';
} else if (fwrite(bws->data.cstr, len + 1, 1, f) < 1)
err(2, NULL);
return (len + 1);
} else {
wchar_t eols;
int printed = 0;
eols = zero_ended ? btowc('\0') : btowc('\n');
while (printed < (int) BWSLEN(bws)) {
const wchar_t *s = bws->data.wstr + printed;
if (*s == L'\0') {
int nums;
nums = fwprintf(f, L"%lc", *s);
if (nums != 1)
err(2, NULL);
++printed;
} else {
int nums;
nums = fwprintf(f, L"%ls", s);
if (nums < 1)
err(2, NULL);
printed += nums;
}
}
fwprintf(f, L"%lc", eols);
return (printed + 1);
}
}
/*
* Allocate and read a binary string from file.
* The strings are nl-ended or zero-ended, depending on the sort setting.
*/
struct bwstring *
bwsfgetln(FILE *f, size_t *len, bool zero_ended, struct reader_buffer *rb)
{
wchar_t eols;
eols = zero_ended ? btowc('\0') : btowc('\n');
if (!zero_ended && (MB_CUR_MAX > 1)) {
wchar_t *ret;
ret = fgetwln(f, len);
if (ret == NULL) {
if (!feof(f))
err(2, NULL);
return (NULL);
}
if (*len > 0) {
if (ret[*len - 1] == eols)
--(*len);
}
return (bwssbdup(ret, *len));
} else if (!zero_ended && (MB_CUR_MAX == 1)) {
char *ret;
ret = fgetln(f, len);
if (ret == NULL) {
if (!feof(f))
err(2, NULL);
return (NULL);
}
if (*len > 0) {
if (ret[*len - 1] == '\n')
--(*len);
}
return (bwscsbdup(ret, *len));
} else {
wchar_t c = 0;
*len = 0;
if (feof(f))
return (NULL);
if (2 >= rb->fgetwln_z_buffer_size) {
rb->fgetwln_z_buffer_size += 256;
rb->fgetwln_z_buffer = sort_realloc(rb->fgetwln_z_buffer,
sizeof(wchar_t) * rb->fgetwln_z_buffer_size);
}
rb->fgetwln_z_buffer[*len] = 0;
if (MB_CUR_MAX == 1)
while (!feof(f)) {
c = fgetc(f);
if (c == EOF) {
if (*len == 0)
return (NULL);
goto line_read_done;
}
if (c == eols)
goto line_read_done;
if (*len + 1 >= rb->fgetwln_z_buffer_size) {
rb->fgetwln_z_buffer_size += 256;
rb->fgetwln_z_buffer = sort_realloc(rb->fgetwln_z_buffer,
SIZEOF_WCHAR_STRING(rb->fgetwln_z_buffer_size));
}
rb->fgetwln_z_buffer[*len] = c;
rb->fgetwln_z_buffer[++(*len)] = 0;
}
else
while (!feof(f)) {
c = fgetwc(f);
if (c == WEOF) {
if (*len == 0)
return (NULL);
goto line_read_done;
}
if (c == eols)
goto line_read_done;
if (*len + 1 >= rb->fgetwln_z_buffer_size) {
rb->fgetwln_z_buffer_size += 256;
rb->fgetwln_z_buffer = sort_realloc(rb->fgetwln_z_buffer,
SIZEOF_WCHAR_STRING(rb->fgetwln_z_buffer_size));
}
rb->fgetwln_z_buffer[*len] = c;
rb->fgetwln_z_buffer[++(*len)] = 0;
}
line_read_done:
/* we do not count the last 0 */
return (bwssbdup(rb->fgetwln_z_buffer, *len));
}
}
int
bwsncmp(const struct bwstring *bws1, const struct bwstring *bws2,
size_t offset, size_t len)
{
size_t cmp_len, len1, len2;
int res = 0;
cmp_len = 0;
len1 = bws1->len;
len2 = bws2->len;
if (len1 <= offset) {
return ((len2 <= offset) ? 0 : -1);
} else {
if (len2 <= offset)
return (+1);
else {
len1 -= offset;
len2 -= offset;
cmp_len = len1;
if (len2 < cmp_len)
cmp_len = len2;
if (len < cmp_len)
cmp_len = len;
if (MB_CUR_MAX == 1) {
const unsigned char *s1, *s2;
s1 = bws1->data.cstr + offset;
s2 = bws2->data.cstr + offset;
res = memcmp(s1, s2, cmp_len);
} else {
const wchar_t *s1, *s2;
s1 = bws1->data.wstr + offset;
s2 = bws2->data.wstr + offset;
res = memcmp(s1, s2, SIZEOF_WCHAR_STRING(cmp_len));
}
}
}
if (res == 0) {
if (len1 < cmp_len && len1 < len2)
res = -1;
else if (len2 < cmp_len && len2 < len1)
res = +1;
}
return (res);
}
int
bwscmp(const struct bwstring *bws1, const struct bwstring *bws2, size_t offset)
{
size_t len1, len2, cmp_len;
int res;
len1 = bws1->len;
len2 = bws2->len;
len1 -= offset;
len2 -= offset;
cmp_len = len1;
if (len2 < cmp_len)
cmp_len = len2;
res = bwsncmp(bws1, bws2, offset, cmp_len);
if (res == 0) {
if( len1 < len2)
res = -1;
else if (len2 < len1)
res = +1;
}
return (res);
}
int
bws_iterator_cmp(bwstring_iterator iter1, bwstring_iterator iter2, size_t len)
{
wchar_t c1, c2;
size_t i = 0;
for (i = 0; i < len; ++i) {
c1 = bws_get_iter_value(iter1);
c2 = bws_get_iter_value(iter2);
if (c1 != c2)
return (c1 - c2);
iter1 = bws_iterator_inc(iter1, 1);
iter2 = bws_iterator_inc(iter2, 1);
}
return (0);
}
int
bwscoll(const struct bwstring *bws1, const struct bwstring *bws2, size_t offset)
{
size_t len1, len2;
len1 = bws1->len;
len2 = bws2->len;
if (len1 <= offset)
return ((len2 <= offset) ? 0 : -1);
else {
if (len2 <= offset)
return (+1);
else {
len1 -= offset;
len2 -= offset;
if (MB_CUR_MAX == 1) {
const unsigned char *s1, *s2;
s1 = bws1->data.cstr + offset;
s2 = bws2->data.cstr + offset;
if (byte_sort) {
int res = 0;
if (len1 > len2) {
res = memcmp(s1, s2, len2);
if (!res)
res = +1;
} else if (len1 < len2) {
res = memcmp(s1, s2, len1);
if (!res)
res = -1;
} else
res = memcmp(s1, s2, len1);
return (res);
} else {
int res = 0;
size_t i, maxlen;
i = 0;
maxlen = len1;
if (maxlen > len2)
maxlen = len2;
while (i < maxlen) {
/* goto next non-zero part: */
while ((i < maxlen) &&
!s1[i] && !s2[i])
++i;
if (i >= maxlen)
break;
if (s1[i] == 0) {
if (s2[i] == 0)
/* NOTREACHED */
err(2, "bwscoll error 01");
else
return (-1);
} else if (s2[i] == 0)
return (+1);
res = strcoll(s1 + i, s2 + i);
if (res)
return (res);
while ((i < maxlen) &&
s1[i] && s2[i])
++i;
if (i >= maxlen)
break;
if (s1[i] == 0) {
if (s2[i] == 0) {
++i;
continue;
} else
return (-1);
} else if (s2[i] == 0)
return (+1);
else
/* NOTREACHED */
err(2, "bwscoll error 02");
}
if (len1 < len2)
return (-1);
else if (len1 > len2)
return (+1);
return (0);
}
} else {
const wchar_t *s1, *s2;
size_t i, maxlen;
int res = 0;
s1 = bws1->data.wstr + offset;
s2 = bws2->data.wstr + offset;
i = 0;
maxlen = len1;
if (maxlen > len2)
maxlen = len2;
while (i < maxlen) {
/* goto next non-zero part: */
while ((i < maxlen) &&
!s1[i] && !s2[i])
++i;
if (i >= maxlen)
break;
if (s1[i] == 0) {
if (s2[i] == 0)
/* NOTREACHED */
err(2, "bwscoll error 1");
else
return (-1);
} else if (s2[i] == 0)
return (+1);
res = wide_str_coll(s1 + i, s2 + i);
if (res)
return (res);
while ((i < maxlen) && s1[i] && s2[i])
++i;
if (i >= maxlen)
break;
if (s1[i] == 0) {
if (s2[i] == 0) {
++i;
continue;
} else
return (-1);
} else if (s2[i] == 0)
return (+1);
else
/* NOTREACHED */
err(2, "bwscoll error 2");
}
if (len1 < len2)
return (-1);
else if (len1 > len2)
return (+1);
return (0);
}
}
}
}
/*
* Correction of the system API
*/
double
bwstod(struct bwstring *s0, bool *empty)
{
double ret = 0;
if (MB_CUR_MAX == 1) {
unsigned char *end, *s;
char *ep;
s = s0->data.cstr;
end = s + s0->len;
ep = NULL;
while (isblank(*s) && s < end)
++s;
if (!isprint(*s)) {
*empty = true;
return (0);
}
ret = strtod(s, &ep);
if ((unsigned char*) ep == s) {
*empty = true;
return (0);
}
} else {
wchar_t *end, *ep, *s;
s = s0->data.wstr;
end = s + s0->len;
ep = NULL;
while (iswblank(*s) && s < end)
++s;
if (!iswprint(*s)) {
*empty = true;
return (0);
}
ret = wcstod(s, &ep);
if (ep == s) {
*empty = true;
return (0);
}
}
*empty = false;
return (ret);
}
/*
* A helper function for monthcoll. If a line matches
* a month name, it returns (number of the month - 1),
* while if there is no match, it just return -1.
*/
int
bws_month_score(const struct bwstring *s0)
{
if (MB_CUR_MAX == 1) {
const unsigned char *end, *s;
size_t len;
s = s0->data.cstr;
end = s + s0->len;
while (isblank(*s) && s < end)
++s;
len = strlen(s);
for (int i = 11; i >= 0; --i) {
if (cmonths[i] &&
(s == (unsigned char*)strstr(s, cmonths[i])))
return (i);
}
} else {
const wchar_t *end, *s;
size_t len;
s = s0->data.wstr;
end = s + s0->len;
while (iswblank(*s) && s < end)
++s;
len = wcslen(s);
for (int i = 11; i >= 0; --i) {
if (wmonths[i] && (s == wcsstr(s, wmonths[i])))
return (i);
}
}
return (-1);
}
/*
* Rips out leading blanks (-b).
*/
struct bwstring *
ignore_leading_blanks(struct bwstring *str)
{
if (MB_CUR_MAX == 1) {
unsigned char *dst, *end, *src;
src = str->data.cstr;
dst = src;
end = src + str->len;
while (src < end && isblank(*src))
++src;
if (src != dst) {
size_t newlen;
newlen = BWSLEN(str) - (src - dst);
while (src < end) {
*dst = *src;
++dst;
++src;
}
bws_setlen(str, newlen);
}
} else {
wchar_t *dst, *end, *src;
src = str->data.wstr;
dst = src;
end = src + str->len;
while (src < end && iswblank(*src))
++src;
if (src != dst) {
size_t newlen = BWSLEN(str) - (src - dst);
while (src < end) {
*dst = *src;
++dst;
++src;
}
bws_setlen(str, newlen);
}
}
return (str);
}
/*
* Rips out nonprinting characters (-i).
*/
struct bwstring *
ignore_nonprinting(struct bwstring *str)
{
size_t newlen = str->len;
if (MB_CUR_MAX == 1) {
unsigned char *dst, *end, *src;
unsigned char c;
src = str->data.cstr;
dst = src;
end = src + str->len;
while (src < end) {
c = *src;
if (isprint(c)) {
*dst = c;
++dst;
++src;
} else {
++src;
--newlen;
}
}
} else {
wchar_t *dst, *end, *src;
wchar_t c;
src = str->data.wstr;
dst = src;
end = src + str->len;
while (src < end) {
c = *src;
if (iswprint(c)) {
*dst = c;
++dst;
++src;
} else {
++src;
--newlen;
}
}
}
bws_setlen(str, newlen);
return (str);
}
/*
* Rips out any characters that are not alphanumeric characters
* nor blanks (-d).
*/
struct bwstring *
dictionary_order(struct bwstring *str)
{
size_t newlen = str->len;
if (MB_CUR_MAX == 1) {
unsigned char *dst, *end, *src;
unsigned char c;
src = str->data.cstr;
dst = src;
end = src + str->len;
while (src < end) {
c = *src;
if (isalnum(c) || isblank(c)) {
*dst = c;
++dst;
++src;
} else {
++src;
--newlen;
}
}
} else {
wchar_t *dst, *end, *src;
wchar_t c;
src = str->data.wstr;
dst = src;
end = src + str->len;
while (src < end) {
c = *src;
if (iswalnum(c) || iswblank(c)) {
*dst = c;
++dst;
++src;
} else {
++src;
--newlen;
}
}
}
bws_setlen(str, newlen);
return (str);
}
/*
* Converts string to lower case(-f).
*/
struct bwstring *
ignore_case(struct bwstring *str)
{
if (MB_CUR_MAX == 1) {
unsigned char *end, *s;
s = str->data.cstr;
end = s + str->len;
while (s < end) {
*s = toupper(*s);
++s;
}
} else {
wchar_t *end, *s;
s = str->data.wstr;
end = s + str->len;
while (s < end) {
*s = towupper(*s);
++s;
}
}
return (str);
}
void
bws_disorder_warnx(struct bwstring *s, const char *fn, size_t pos)
{
if (MB_CUR_MAX == 1)
warnx("%s:%zu: disorder: %s", fn, pos + 1, s->data.cstr);
else
warnx("%s:%zu: disorder: %ls", fn, pos + 1, s->data.wstr);
}
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