freebsd-nq/contrib/apr/strings/apr_strings.c
Peter Wemm 937a200089 Introduce svnlite so that we can check out our source code again.
This is actually a fully functional build except:
* All internal shared libraries are static linked to make sure there
  is no interference with ports (and to reduce build time).
* It does not have the python/perl/etc plugin or API support.
* By default, it installs as "svnlite" rather than "svn".
* If WITH_SVN added in make.conf, you get "svn".
* If WITHOUT_SVNLITE is in make.conf, this is completely disabled.

To be absolutely clear, this is not intended for any use other than
checking out freebsd source and committing, like we once did with cvs.

It should be usable for small scale local repositories that don't
need the python/perl plugin architecture.
2013-06-18 02:53:45 +00:00

469 lines
12 KiB
C

/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Copyright (c) 1990, 1993
* The Regents of the University of California. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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 "apr.h"
#include "apr_strings.h"
#include "apr_general.h"
#include "apr_private.h"
#include "apr_lib.h"
#define APR_WANT_STDIO
#define APR_WANT_STRFUNC
#include "apr_want.h"
#ifdef HAVE_STDDEF_H
#include <stddef.h> /* NULL */
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h> /* strtol and strtoll */
#endif
/** this is used to cache lengths in apr_pstrcat */
#define MAX_SAVED_LENGTHS 6
APR_DECLARE(char *) apr_pstrdup(apr_pool_t *a, const char *s)
{
char *res;
apr_size_t len;
if (s == NULL) {
return NULL;
}
len = strlen(s) + 1;
res = apr_palloc(a, len);
memcpy(res, s, len);
return res;
}
APR_DECLARE(char *) apr_pstrndup(apr_pool_t *a, const char *s, apr_size_t n)
{
char *res;
const char *end;
if (s == NULL) {
return NULL;
}
end = memchr(s, '\0', n);
if (end != NULL)
n = end - s;
res = apr_palloc(a, n + 1);
memcpy(res, s, n);
res[n] = '\0';
return res;
}
APR_DECLARE(char *) apr_pstrmemdup(apr_pool_t *a, const char *s, apr_size_t n)
{
char *res;
if (s == NULL) {
return NULL;
}
res = apr_palloc(a, n + 1);
memcpy(res, s, n);
res[n] = '\0';
return res;
}
APR_DECLARE(void *) apr_pmemdup(apr_pool_t *a, const void *m, apr_size_t n)
{
void *res;
if (m == NULL)
return NULL;
res = apr_palloc(a, n);
memcpy(res, m, n);
return res;
}
APR_DECLARE_NONSTD(char *) apr_pstrcat(apr_pool_t *a, ...)
{
char *cp, *argp, *res;
apr_size_t saved_lengths[MAX_SAVED_LENGTHS];
int nargs = 0;
/* Pass one --- find length of required string */
apr_size_t len = 0;
va_list adummy;
va_start(adummy, a);
while ((cp = va_arg(adummy, char *)) != NULL) {
apr_size_t cplen = strlen(cp);
if (nargs < MAX_SAVED_LENGTHS) {
saved_lengths[nargs++] = cplen;
}
len += cplen;
}
va_end(adummy);
/* Allocate the required string */
res = (char *) apr_palloc(a, len + 1);
cp = res;
/* Pass two --- copy the argument strings into the result space */
va_start(adummy, a);
nargs = 0;
while ((argp = va_arg(adummy, char *)) != NULL) {
if (nargs < MAX_SAVED_LENGTHS) {
len = saved_lengths[nargs++];
}
else {
len = strlen(argp);
}
memcpy(cp, argp, len);
cp += len;
}
va_end(adummy);
/* Return the result string */
*cp = '\0';
return res;
}
APR_DECLARE(char *) apr_pstrcatv(apr_pool_t *a, const struct iovec *vec,
apr_size_t nvec, apr_size_t *nbytes)
{
apr_size_t i;
apr_size_t len;
const struct iovec *src;
char *res;
char *dst;
/* Pass one --- find length of required string */
len = 0;
src = vec;
for (i = nvec; i; i--) {
len += src->iov_len;
src++;
}
if (nbytes) {
*nbytes = len;
}
/* Allocate the required string */
res = (char *) apr_palloc(a, len + 1);
/* Pass two --- copy the argument strings into the result space */
src = vec;
dst = res;
for (i = nvec; i; i--) {
memcpy(dst, src->iov_base, src->iov_len);
dst += src->iov_len;
src++;
}
/* Return the result string */
*dst = '\0';
return res;
}
#if (!APR_HAVE_MEMCHR)
void *memchr(const void *s, int c, size_t n)
{
const char *cp;
for (cp = s; n > 0; n--, cp++) {
if (*cp == c)
return (char *) cp; /* Casting away the const here */
}
return NULL;
}
#endif
#ifndef INT64_MAX
#define INT64_MAX APR_INT64_C(0x7fffffffffffffff)
#endif
#ifndef INT64_MIN
#define INT64_MIN (-APR_INT64_C(0x7fffffffffffffff) - APR_INT64_C(1))
#endif
APR_DECLARE(apr_status_t) apr_strtoff(apr_off_t *offset, const char *nptr,
char **endptr, int base)
{
errno = 0;
*offset = APR_OFF_T_STRFN(nptr, endptr, base);
return APR_FROM_OS_ERROR(errno);
}
APR_DECLARE(apr_int64_t) apr_strtoi64(const char *nptr, char **endptr, int base)
{
#ifdef APR_INT64_STRFN
errno = 0;
return APR_INT64_STRFN(nptr, endptr, base);
#else
const char *s;
apr_int64_t acc;
apr_int64_t val;
int neg, any;
char c;
errno = 0;
/*
* Skip white space and pick up leading +/- sign if any.
* If base is 0, allow 0x for hex and 0 for octal, else
* assume decimal; if base is already 16, allow 0x.
*/
s = nptr;
do {
c = *s++;
} while (apr_isspace(c));
if (c == '-') {
neg = 1;
c = *s++;
} else {
neg = 0;
if (c == '+')
c = *s++;
}
if ((base == 0 || base == 16) &&
c == '0' && (*s == 'x' || *s == 'X')) {
c = s[1];
s += 2;
base = 16;
}
if (base == 0)
base = c == '0' ? 8 : 10;
acc = any = 0;
if (base < 2 || base > 36) {
errno = EINVAL;
if (endptr != NULL)
*endptr = (char *)(any ? s - 1 : nptr);
return acc;
}
/* The classic bsd implementation requires div/mod operators
* to compute a cutoff. Benchmarking proves that is very, very
* evil to some 32 bit processors. Instead, look for underflow
* in both the mult and add/sub operation. Unlike the bsd impl,
* we also work strictly in a signed int64 word as we haven't
* implemented the unsigned type in win32.
*
* Set 'any' if any `digits' consumed; make it negative to indicate
* overflow.
*/
val = 0;
for ( ; ; c = *s++) {
if (c >= '0' && c <= '9')
c -= '0';
#if (('Z' - 'A') == 25)
else if (c >= 'A' && c <= 'Z')
c -= 'A' - 10;
else if (c >= 'a' && c <= 'z')
c -= 'a' - 10;
#elif APR_CHARSET_EBCDIC
else if (c >= 'A' && c <= 'I')
c -= 'A' - 10;
else if (c >= 'J' && c <= 'R')
c -= 'J' - 19;
else if (c >= 'S' && c <= 'Z')
c -= 'S' - 28;
else if (c >= 'a' && c <= 'i')
c -= 'a' - 10;
else if (c >= 'j' && c <= 'r')
c -= 'j' - 19;
else if (c >= 's' && c <= 'z')
c -= 'z' - 28;
#else
#error "CANNOT COMPILE apr_strtoi64(), only ASCII and EBCDIC supported"
#endif
else
break;
if (c >= base)
break;
val *= base;
if ( (any < 0) /* already noted an over/under flow - short circuit */
|| (neg && (val > acc || (val -= c) > acc)) /* underflow */
|| (!neg && (val < acc || (val += c) < acc))) { /* overflow */
any = -1; /* once noted, over/underflows never go away */
#ifdef APR_STRTOI64_OVERFLOW_IS_BAD_CHAR
break;
#endif
} else {
acc = val;
any = 1;
}
}
if (any < 0) {
acc = neg ? INT64_MIN : INT64_MAX;
errno = ERANGE;
} else if (!any) {
errno = EINVAL;
}
if (endptr != NULL)
*endptr = (char *)(any ? s - 1 : nptr);
return (acc);
#endif
}
APR_DECLARE(apr_int64_t) apr_atoi64(const char *buf)
{
return apr_strtoi64(buf, NULL, 10);
}
APR_DECLARE(char *) apr_itoa(apr_pool_t *p, int n)
{
const int BUFFER_SIZE = sizeof(int) * 3 + 2;
char *buf = apr_palloc(p, BUFFER_SIZE);
char *start = buf + BUFFER_SIZE - 1;
int negative;
if (n < 0) {
negative = 1;
n = -n;
}
else {
negative = 0;
}
*start = 0;
do {
*--start = '0' + (n % 10);
n /= 10;
} while (n);
if (negative) {
*--start = '-';
}
return start;
}
APR_DECLARE(char *) apr_ltoa(apr_pool_t *p, long n)
{
const int BUFFER_SIZE = sizeof(long) * 3 + 2;
char *buf = apr_palloc(p, BUFFER_SIZE);
char *start = buf + BUFFER_SIZE - 1;
int negative;
if (n < 0) {
negative = 1;
n = -n;
}
else {
negative = 0;
}
*start = 0;
do {
*--start = (char)('0' + (n % 10));
n /= 10;
} while (n);
if (negative) {
*--start = '-';
}
return start;
}
APR_DECLARE(char *) apr_off_t_toa(apr_pool_t *p, apr_off_t n)
{
const int BUFFER_SIZE = sizeof(apr_off_t) * 3 + 2;
char *buf = apr_palloc(p, BUFFER_SIZE);
char *start = buf + BUFFER_SIZE - 1;
int negative;
if (n < 0) {
negative = 1;
n = -n;
}
else {
negative = 0;
}
*start = 0;
do {
*--start = '0' + (char)(n % 10);
n /= 10;
} while (n);
if (negative) {
*--start = '-';
}
return start;
}
APR_DECLARE(char *) apr_strfsize(apr_off_t size, char *buf)
{
const char ord[] = "KMGTPE";
const char *o = ord;
int remain;
if (size < 0) {
return strcpy(buf, " - ");
}
if (size < 973) {
if (apr_snprintf(buf, 5, "%3d ", (int) size) < 0)
return strcpy(buf, "****");
return buf;
}
do {
remain = (int)(size & 1023);
size >>= 10;
if (size >= 973) {
++o;
continue;
}
if (size < 9 || (size == 9 && remain < 973)) {
if ((remain = ((remain * 5) + 256) / 512) >= 10)
++size, remain = 0;
if (apr_snprintf(buf, 5, "%d.%d%c", (int) size, remain, *o) < 0)
return strcpy(buf, "****");
return buf;
}
if (remain >= 512)
++size;
if (apr_snprintf(buf, 5, "%3d%c", (int) size, *o) < 0)
return strcpy(buf, "****");
return buf;
} while (1);
}