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feat:replace boost library with C++11 std library

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Livox-SDK
2020-04-01 20:53:55 +08:00
parent 6d06233944
commit d3258bbd97
1936 changed files with 241862 additions and 60153 deletions
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third_party/apr/apr-1.6.5/strings/apr_cpystrn.c
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/* 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.
*/
#include "apr.h"
#include "apr_strings.h"
#include "apr_private.h"
#include "apr_lib.h"
#if APR_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if APR_HAVE_STRING_H
#include <string.h>
#endif
#if APR_HAVE_CTYPE_H
#include <ctype.h>
#endif
/*
* Apache's "replacement" for the strncpy() function. We roll our
* own to implement these specific changes:
* (1) strncpy() doesn't always null terminate and we want it to.
* (2) strncpy() null fills, which is bogus, esp. when copy 8byte
* strings into 8k blocks.
* (3) Instead of returning the pointer to the beginning of
* the destination string, we return a pointer to the
* terminating '\0' to allow us to "check" for truncation
* (4) If src is NULL, null terminate dst (empty string copy)
*
* apr_cpystrn() follows the same call structure as strncpy().
*/
APR_DECLARE(char *) apr_cpystrn(char *dst, const char *src, apr_size_t dst_size)
{
char *d = dst, *end;
if (dst_size == 0) {
return (dst);
}
if (src) {
end = dst + dst_size - 1;
for (; d < end; ++d, ++src) {
if (!(*d = *src)) {
return (d);
}
}
}
*d = '\0'; /* always null terminate */
return (d);
}
/*
* This function provides a way to parse a generic argument string
* into a standard argv[] form of argument list. It respects the
* usual "whitespace" and quoteing rules. In the future this could
* be expanded to include support for the apr_call_exec command line
* string processing (including converting '+' to ' ' and doing the
* url processing. It does not currently support this function.
*
* token_context: Context from which pool allocations will occur.
* arg_str: Input argument string for conversion to argv[].
* argv_out: Output location. This is a pointer to an array
* of pointers to strings (ie. &(char *argv[]).
* This value will be allocated from the contexts
* pool and filled in with copies of the tokens
* found during parsing of the arg_str.
*/
APR_DECLARE(apr_status_t) apr_tokenize_to_argv(const char *arg_str,
char ***argv_out,
apr_pool_t *token_context)
{
const char *cp;
const char *ct;
char *cleaned, *dirty;
int escaped;
int isquoted, numargs = 0, argnum;
#define SKIP_WHITESPACE(cp) \
for ( ; *cp == ' ' || *cp == '\t'; ) { \
cp++; \
};
#define CHECK_QUOTATION(cp,isquoted) \
isquoted = 0; \
if (*cp == '"') { \
isquoted = 1; \
cp++; \
} \
else if (*cp == '\'') { \
isquoted = 2; \
cp++; \
}
/* DETERMINE_NEXTSTRING:
* At exit, cp will point to one of the following: NULL, SPACE, TAB or QUOTE.
* NULL implies the argument string has been fully traversed.
*/
#define DETERMINE_NEXTSTRING(cp,isquoted) \
for ( ; *cp != '\0'; cp++) { \
if ( (*cp == '\\' && (*(cp+1) == ' ' || *(cp+1) == '\t' || \
*(cp+1) == '"' || *(cp+1) == '\''))) { \
cp++; \
continue; \
} \
if ( (!isquoted && (*cp == ' ' || *cp == '\t')) \
|| (isquoted == 1 && *cp == '"') \
|| (isquoted == 2 && *cp == '\'') ) { \
break; \
} \
}
/* REMOVE_ESCAPE_CHARS:
* Compresses the arg string to remove all of the '\' escape chars.
* The final argv strings should not have any extra escape chars in it.
*/
#define REMOVE_ESCAPE_CHARS(cleaned, dirty, escaped) \
escaped = 0; \
while(*dirty) { \
if (!escaped && *dirty == '\\') { \
escaped = 1; \
} \
else { \
escaped = 0; \
*cleaned++ = *dirty; \
} \
++dirty; \
} \
*cleaned = 0; /* last line of macro... */
cp = arg_str;
SKIP_WHITESPACE(cp);
ct = cp;
/* This is ugly and expensive, but if anyone wants to figure a
* way to support any number of args without counting and
* allocating, please go ahead and change the code.
*
* Must account for the trailing NULL arg.
*/
numargs = 1;
while (*ct != '\0') {
CHECK_QUOTATION(ct, isquoted);
DETERMINE_NEXTSTRING(ct, isquoted);
if (*ct != '\0') {
ct++;
}
numargs++;
SKIP_WHITESPACE(ct);
}
*argv_out = apr_palloc(token_context, numargs * sizeof(char*));
/* determine first argument */
for (argnum = 0; argnum < (numargs-1); argnum++) {
SKIP_WHITESPACE(cp);
CHECK_QUOTATION(cp, isquoted);
ct = cp;
DETERMINE_NEXTSTRING(cp, isquoted);
cp++;
(*argv_out)[argnum] = apr_palloc(token_context, cp - ct);
apr_cpystrn((*argv_out)[argnum], ct, cp - ct);
cleaned = dirty = (*argv_out)[argnum];
REMOVE_ESCAPE_CHARS(cleaned, dirty, escaped);
}
(*argv_out)[argnum] = NULL;
return APR_SUCCESS;
}
/* Filepath_name_get returns the final element of the pathname.
* Using the current platform's filename syntax.
* "/foo/bar/gum" -> "gum"
* "/foo/bar/gum/" -> ""
* "gum" -> "gum"
* "wi\\n32\\stuff" -> "stuff
*
* Corrected Win32 to accept "a/b\\stuff", "a:stuff"
*/
APR_DECLARE(const char *) apr_filepath_name_get(const char *pathname)
{
const char path_separator = '/';
const char *s = strrchr(pathname, path_separator);
#ifdef WIN32
const char path_separator_win = '\\';
const char drive_separator_win = ':';
const char *s2 = strrchr(pathname, path_separator_win);
if (s2 > s) s = s2;
if (!s) s = strrchr(pathname, drive_separator_win);
#endif
return s ? ++s : pathname;
}
/* length of dest assumed >= length of src
* collapse in place (src == dest) is legal.
* returns terminating null ptr to dest string.
*/
APR_DECLARE(char *) apr_collapse_spaces(char *dest, const char *src)
{
while (*src) {
if (!apr_isspace(*src))
*dest++ = *src;
++src;
}
*dest = 0;
return (dest);
}
#if !APR_HAVE_STRDUP
char *strdup(const char *str)
{
char *sdup;
size_t len = strlen(str) + 1;
sdup = (char *) malloc(len);
if (sdup == NULL)
return NULL;
memcpy(sdup, str, len);
return sdup;
}
#endif
/* The following two routines were donated for SVR4 by Andreas Vogel */
#if (!APR_HAVE_STRCASECMP && !APR_HAVE_STRICMP)
int strcasecmp(const char *a, const char *b)
{
const char *p = a;
const char *q = b;
for (p = a, q = b; *p && *q; p++, q++) {
int diff = apr_tolower(*p) - apr_tolower(*q);
if (diff)
return diff;
}
if (*p)
return 1; /* p was longer than q */
if (*q)
return -1; /* p was shorter than q */
return 0; /* Exact match */
}
#endif
#if (!APR_HAVE_STRNCASECMP && !APR_HAVE_STRNICMP)
int strncasecmp(const char *a, const char *b, size_t n)
{
const char *p = a;
const char *q = b;
for (p = a, q = b; /*NOTHING */ ; p++, q++) {
int diff;
if (p == a + n)
return 0; /* Match up to n characters */
if (!(*p && *q))
return *p - *q;
diff = apr_tolower(*p) - apr_tolower(*q);
if (diff)
return diff;
}
/*NOTREACHED */
}
#endif
/* The following routine was donated for UTS21 by dwd@bell-labs.com */
#if (!APR_HAVE_STRSTR)
char *strstr(char *s1, char *s2)
{
char *p1, *p2;
if (*s2 == '\0') {
/* an empty s2 */
return(s1);
}
while((s1 = strchr(s1, *s2)) != NULL) {
/* found first character of s2, see if the rest matches */
p1 = s1;
p2 = s2;
while (*++p1 == *++p2) {
if (*p1 == '\0') {
/* both strings ended together */
return(s1);
}
}
if (*p2 == '\0') {
/* second string ended, a match */
break;
}
/* didn't find a match here, try starting at next character in s1 */
s1++;
}
return(s1);
}
#endif