add missing files
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11787 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Michael Jerris
parent
b1fae35534
commit
4381a94448
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@ -0,0 +1,86 @@
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/*
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* This file is part of the Sofia-SIP package
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*
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* Copyright (C) 2005 Nokia Corporation.
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*
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* Contact: Pekka Pessi <pekka.pessi@nokia.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef SOFIA_SIP_SU_STRING_H
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/** Defined when <sofia-sip/su_string.h> is included. */
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#define SOFIA_SIP_SU_STRING_H
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/**@file sofia-sip/su_string.h
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*
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* @brief String functions for Sofia-SIP.
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*
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* Various string comparison functions also accepting NULL pointer as empty
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* string:
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* - su_strcmp(),
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* - su_strncmp(),
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* - su_strcasecmp() (comparison with US-ASCII case folding to lower case),
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* - su_strncasecmp() (comparison with US-ASCII case folding to lower case)
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* - su_casematch() (match token with US-ASCII case folding to lower case)
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* - su_casenmatch() (match token with US-ASCII case folding to lower case)
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*
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* Also includes span functions testing at most @a n bytes:
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* - su_strncspn()
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* - su_strnspn().
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*/
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#ifndef SU_CONFIG_H
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#include <sofia-sip/su_config.h>
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#endif
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#include <string.h>
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SOFIA_BEGIN_DECLS
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su_inline int su_strcmp(char const *a, char const *b)
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{
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return strcmp(a ? a : "", b ? b : "");
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}
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su_inline int su_strncmp(char const *a, char const *b, size_t n)
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{
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return strncmp(a ? a : "", b ? b : "", n);
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}
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SOFIAPUBFUN char *su_strcasestr(const char *haystack, const char *needle);
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SOFIAPUBFUN int su_strcasecmp(char const *s1, char const *s2);
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SOFIAPUBFUN int su_strncasecmp(char const *s1, char const *s2, size_t n);
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SOFIAPUBFUN int su_strmatch(char const *str, char const *with);
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SOFIAPUBFUN int su_strnmatch(char const *str, char const *with, size_t n);
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SOFIAPUBFUN int su_casematch(char const *s1, char const *with);
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SOFIAPUBFUN int su_casenmatch(char const *s1, char const *with, size_t n);
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SOFIAPUBFUN size_t su_strnspn(char const *s, size_t size, char const *term);
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SOFIAPUBFUN size_t su_strncspn(char const *s, size_t ssize, char const *reject);
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SOFIAPUBFUN size_t su_memspn(const void *mem, size_t memlen,
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const void *accept, size_t acceptlen);
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SOFIAPUBFUN size_t su_memcspn(const void *mem, size_t memlen,
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const void *reject, size_t rejectlen);
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SOFIA_END_DECLS
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#endif /* !SOFIA_SIP_SU_STRING_H */
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@ -0,0 +1,518 @@
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/*
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* This file is part of the Sofia-SIP package
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*
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* Copyright (C) 2005 Nokia Corporation.
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*
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* Contact: Pekka Pessi <pekka.pessi@nokia.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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/**@internal @file su_string.c
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* @brief Various string utility functions.
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*
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* @author Pekka Pessi <Pekka.Pessi@nokia.com>
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*/
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#include "config.h"
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#include <sofia-sip/su_string.h>
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#include <ctype.h>
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#include <string.h>
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#include <stddef.h>
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#include <limits.h>
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/** ASCII-case-insensitive substring search.
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*
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* Search for substring ASCII-case-insensitively.
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*
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*/
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char *
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su_strcasestr(const char *haystack,
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const char *needle)
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{
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unsigned char lcn, ucn;
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size_t i;
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if (haystack == NULL || needle == NULL)
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return NULL;
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lcn = ucn = needle[0];
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if ('A' <= lcn && lcn <= 'Z')
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lcn += 'a' - 'A';
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else if ('a' <= ucn && ucn <= 'z')
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ucn -= 'a' - 'Z';
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if (lcn == 0)
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return (char *)haystack;
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while (haystack[0] != 0) {
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if (lcn == haystack[0] || ucn == haystack[0]) {
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for (i = 1; ; i++) {
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char n = needle[i], h = haystack[i];
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if (n == 0)
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return (char *)haystack;
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if (h == 0)
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return NULL;
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if (n == h)
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continue;
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if ((n ^ h) != ('A' ^ 'a'))
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break;
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if ('A' <= n && n <= 'Z')
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n += 'a' - 'A';
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else if ('A' <= h && h <= 'Z')
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h += 'a' - 'A';
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if (n != h)
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break;
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}
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}
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haystack++;
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}
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return NULL; /* Not found */
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}
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/** ASCII-case-insensitive comparison.
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*
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* Compare two strings colliding upper case and lower case ASCII chars.
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* Avoid using locale-dependent strcasecmp(). A NULL pointer compares as an
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* empty string.
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*
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* @retval An int less than zero if @a s1 is less than @a s2
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* @retval Zero if @a s1 matches @a s2
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* @retval An int greater than zero if @a s1 is greater than @a s2
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*/
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int
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su_strcasecmp(char const *s1,
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char const *s2)
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{
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unsigned char const *A = (unsigned char const *)(s1 ? s1 : "");
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unsigned char const *B = (unsigned char const *)(s2 ? s2 : "");
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for (;;) {
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unsigned char a = *A++, b = *B++;
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int value = (int)a - (int)b;
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if (a == 0)
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return value;
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if (value == 0)
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continue;
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if ('A' <= a && a <= 'Z')
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a += 'a' - 'A';
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if ('A' <= b && b <= 'Z')
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b += 'a' - 'A';
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value = (int)a - (int)b;
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if (value)
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return value;
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}
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}
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/** ASCII-case-insensitive comparison.
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*
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* Compare first @a n bytes of two strings colliding upper case and lower
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* case ASCII chars. Avoid using locale-dependent strncasecmp(). A NULL
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* pointer compares as an empty string.
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*
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* @retval An int less than zero if first @a n bytes of @a s1 is less than @a s2
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* @retval Zero if first @a n bytes of @a s1 matches @a s2
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* @retval An int greater than zero if first @a n bytes of @a s1 is greater than @a s2
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*/
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int
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su_strncasecmp(char const *s1,
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char const *s2,
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size_t n)
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{
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unsigned char const *A = (unsigned char const *)(s1 ? s1 : "");
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unsigned char const *B = (unsigned char const *)(s2 ? s2 : "");
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if (n == 0 || A == B || memcmp(A, B, n) == 0)
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return 0;
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for (;;) {
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unsigned char a, b;
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int value;
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if (n-- == 0)
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return 0;
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a = *A++, b = *B++;
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value = a - b;
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if (a == 0)
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return value;
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if (value == 0)
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continue;
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if ('A' <= a && a <= 'Z')
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a += 'a' - 'A';
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if ('A' <= b && b <= 'Z')
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b += 'a' - 'A';
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value = a - b;
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if (value)
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return value;
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}
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}
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/** Check if two strings match.
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*
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* Compare two strings. Accept NULL arguments: two NULL pointers match each
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* other, but otherwise NULL pointer does not match anything else, not even
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* empty string.
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*
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* @param s1
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*
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* @retval One if @a s1 matches @a s2
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* @retval Zero if @a s1 does not match @a s2
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*/
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int
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su_strmatch(char const *s1, char const *s2)
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{
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if (s1 == s2)
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return 1;
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if (s1 == NULL || s2 == NULL)
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return 0;
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return strcmp(s1, s2) == 0;
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}
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/** ASCII-case-insensitive string match.
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*
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* Match two strings colliding upper case and lower case ASCII characters.
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* Avoid using locale-dependent strncasecmp(). Accept NULL arguments: two
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* NULL pointers match each other, but otherwise NULL pointer does not match
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* anything else, not even empty string.
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*
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* @retval One if first @a n bytes of @a s1 matches @a s2
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* @retval Zero if first @a n bytes of @a s1 do not match @a s2
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*/
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int
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su_casematch(char const *s1, char const *s2)
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{
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if (s1 == s2)
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return 1;
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if (s1 == NULL || s2 == NULL)
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return 0;
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for (;;) {
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unsigned char a = *s1++, b = *s2++;
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if (b == 0)
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return a == b;
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if (a == b)
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continue;
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if ('A' <= a && a <= 'Z') {
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if (a + 'a' - 'A' != b)
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return 0;
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}
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else if ('A' <= b && b <= 'Z') {
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if (a != b + 'a' - 'A')
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return 0;
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}
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else
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return 0;
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}
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}
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/** String prefix match.
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*
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* Match first @a n bytes of two strings. If @a n is 0, match always, even
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* if arguments are NULL. Otherwise, accept NULL arguments: two NULL
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* pointers match each other. NULL pointer does not match
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* anything else, not even empty string.
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*
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* @retval One if first @a n bytes of @a s1 matches @a s2
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* @retval Zero if first @a n bytes of @a s1 do not match @a s2
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*/
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int
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su_strnmatch(char const *s1,
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char const *s2,
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size_t n)
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{
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if (n == 0)
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return 1;
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if (s1 == s2)
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return 1;
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if (s1 == NULL || s2 == NULL)
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return 0;
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return strncmp(s1, s2, n) == 0;
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}
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/** ASCII-case-insensitive string match.
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*
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* Compare two strings colliding upper case and lower case ASCII characters.
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* Avoid using locale-dependent strncasecmp().
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*
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* @retval One if first @a n bytes of @a s1 matches @a s2
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* @retval Zero if first @a n bytes of @a s1 do not match @a s2
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*/
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int
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su_casenmatch(char const *s1,
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char const *s2,
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size_t n)
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{
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if (n == 0)
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return 1;
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if (s1 == s2)
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return 1;
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if (s1 == NULL || s2 == NULL)
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return 0;
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if (strncmp(s1, s2, n) == 0)
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return 1;
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while (n-- > 0) {
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unsigned char a = *s1++, b = *s2++;
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if (a == 0 || b == 0)
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return a == b;
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if (a == b)
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continue;
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if ('A' <= a && a <= 'Z') {
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if (a + 'a' - 'A' != b)
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return 0;
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}
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else if ('A' <= b && b <= 'Z') {
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if (a != b + 'a' - 'A')
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return 0;
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}
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else
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return 0;
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}
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return 1;
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}
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/** Search a string for a set of characters.
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*
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* Calculate the length of the initial segment of first @a n bytes of @a s
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* which consists entirely of characters in @a accept.
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*
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* @param s string to search for characters
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* @param n limit of search length
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* @param accept set of characters to accept
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*
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* @return
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* Number of characters in the prefix of @a s which consists only of
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* characters from @a accept.
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*/
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size_t
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su_strnspn(char const *s, size_t n, char const *accept)
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{
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size_t len;
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size_t asize;
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if (accept == NULL || s == NULL)
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return 0;
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asize = strlen(accept);
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|
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if (asize == 0) {
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return 0;
|
||||
}
|
||||
else if (asize == 1) {
|
||||
char c, a = accept[0];
|
||||
for (len = 0; len < n && (c = s[len]) && c == a; len++)
|
||||
;
|
||||
}
|
||||
else if (asize == 2) {
|
||||
char c, a1 = accept[0], a2 = accept[1];
|
||||
for (len = 0; len < n && (c = s[len]) && (c == a1 || c == a2); len++)
|
||||
;
|
||||
}
|
||||
else {
|
||||
size_t i;
|
||||
char c, a1 = accept[0], a2 = accept[1];
|
||||
|
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for (len = 0; len < n && (c = s[len]); len++) {
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||||
if (c == a1 || c == a2)
|
||||
continue;
|
||||
|
||||
for (i = 2; i < asize; i++) {
|
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if (c == accept[i])
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break;
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||||
}
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||||
|
||||
if (i == asize)
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break;
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}
|
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}
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return len;
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}
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|
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/** Search a string for a set of characters.
|
||||
*
|
||||
* Calculate the length of the initial segment of first @a n bytes of @a s
|
||||
* which does not constists of characters in @a reject.
|
||||
*
|
||||
* @param s string to search for characters
|
||||
* @param n limit of search length
|
||||
* @param reject set of characters to reject
|
||||
*
|
||||
* @return
|
||||
* Number of characters in the prefix of @a s which are not in @a reject.
|
||||
*/
|
||||
size_t
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||||
su_strncspn(char const *s, size_t n, char const *reject)
|
||||
{
|
||||
size_t len;
|
||||
size_t rsize;
|
||||
|
||||
if (s == NULL)
|
||||
return 0;
|
||||
|
||||
if (reject == NULL)
|
||||
rsize = 0;
|
||||
else
|
||||
rsize = strlen(reject);
|
||||
|
||||
if (rsize == 0) {
|
||||
#if HAVE_STRNLEN
|
||||
len = strnlen(s, n);
|
||||
#else
|
||||
for (len = 0; len < n && s[len]; len++)
|
||||
;
|
||||
#endif
|
||||
}
|
||||
else if (rsize == 1) {
|
||||
char c, rej = reject[0];
|
||||
for (len = 0; len < n && (c = s[len]) && c != rej; len++)
|
||||
;
|
||||
}
|
||||
else if (rsize == 2) {
|
||||
char c, rej1 = reject[0], rej2 = reject[1];
|
||||
for (len = 0; len < n && (c = s[len]) && c != rej1 && c != rej2; len++)
|
||||
;
|
||||
}
|
||||
else {
|
||||
size_t i;
|
||||
char c, rej1 = reject[0], rej2 = reject[1];
|
||||
for (len = 0; len < n && (c = s[len]) && c != rej1 && c != rej2; len++) {
|
||||
for (i = 2; i < rsize; i++)
|
||||
if (c == reject[i])
|
||||
return len;
|
||||
}
|
||||
}
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
/**Scan memory for a set of bytes.
|
||||
*
|
||||
* Calculates the length of the memory area @a mem which consists entirely
|
||||
o * of bytes in @a accept.
|
||||
*
|
||||
* @param mem pointer to memory area
|
||||
* @param memlen size of @a mem in bytes
|
||||
* @param accept pointer to table containing bytes to accept
|
||||
* @param acceptlen size of @a accept table
|
||||
*
|
||||
* @return
|
||||
* The number of consequtive bytes in the memory area @a which consists
|
||||
* entirely of bytes in @a accept.
|
||||
*/
|
||||
size_t su_memspn(const void *mem, size_t memlen,
|
||||
const void *accept, size_t acceptlen)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
unsigned char const *m = mem, *a = accept;
|
||||
|
||||
char accepted[UCHAR_MAX + 1];
|
||||
|
||||
if (mem == NULL || memlen == 0 || acceptlen == 0 || accept == NULL)
|
||||
return 0;
|
||||
|
||||
memset(accepted, 0, sizeof accepted);
|
||||
|
||||
for (i = 0; i < acceptlen; i++)
|
||||
accepted[a[i]] = 1;
|
||||
|
||||
for (i = 0; i < memlen; i++)
|
||||
if (!accepted[m[i]])
|
||||
break;
|
||||
|
||||
return i;
|
||||
}
|
||||
|
||||
/**Search memory for bytes not in a given set.
|
||||
*
|
||||
* Calculates the length of the memory area @a mem which consists entirely
|
||||
* of bytes not in @a reject.
|
||||
*
|
||||
* @param mem pointer to memory area
|
||||
* @param memlen size of @a mem in bytes
|
||||
* @param reject pointer to table containing bytes to reject
|
||||
* @param rejectlen size of @a reject table
|
||||
*
|
||||
* @return
|
||||
* The number of consequtive bytes in the memory area @a which are not in @a
|
||||
* reject.
|
||||
* @par
|
||||
* If @a rejectlen is 0, or @a reject is NULL, it returns @a memlen, size of
|
||||
* the memory area.
|
||||
*/
|
||||
size_t
|
||||
su_memcspn(const void *mem, size_t memlen,
|
||||
const void *reject, size_t rejectlen)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
unsigned char const *m = mem, *r = reject;
|
||||
|
||||
char rejected[UCHAR_MAX + 1];
|
||||
|
||||
if (mem == NULL || memlen == 0)
|
||||
return 0;
|
||||
|
||||
if (rejectlen == 0 || reject == 0)
|
||||
return memlen;
|
||||
|
||||
memset(rejected, 0, sizeof rejected);
|
||||
|
||||
for (i = 0; i < rejectlen; i++)
|
||||
rejected[r[i]] = 1;
|
||||
|
||||
for (i = 0; i < memlen; i++)
|
||||
if (rejected[m[i]])
|
||||
break;
|
||||
|
||||
return i;
|
||||
}
|
||||
Loading…
Reference in New Issue