godot/thirdparty/icu4c/common/cstring.cpp

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
*   Copyright (C) 1997-2011, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
******************************************************************************
*
* File CSTRING.C
*
* @author       Helena Shih
*
* Modification History:
*
*   Date        Name        Description
*   6/18/98     hshih       Created
*   09/08/98    stephen     Added include for ctype, for Mac Port
*   11/15/99    helena      Integrated S/390 IEEE changes. 
******************************************************************************
*/



#include <stdlib.h>
#include <stdio.h>
#include "unicode/utypes.h"
#include "cmemory.h"
#include "cstring.h"
#include "uassert.h"

/*
 * We hardcode case conversion for invariant characters to match our expectation
 * and the compiler execution charset.
 * This prevents problems on systems
 * - with non-default casing behavior, like Turkish system locales where
 *   tolower('I') maps to dotless i and toupper('i') maps to dotted I
 * - where there are no lowercase Latin characters at all, or using different
 *   codes (some old EBCDIC codepages)
 *
 * This works because the compiler usually runs on a platform where the execution
 * charset includes all of the invariant characters at their expected
 * code positions, so that the char * string literals in ICU code match
 * the char literals here.
 *
 * Note that the set of lowercase Latin letters is discontiguous in EBCDIC
 * and the set of uppercase Latin letters is discontiguous as well.
 */

U_CAPI UBool U_EXPORT2
uprv_isASCIILetter(char c) { … }

U_CAPI char U_EXPORT2
uprv_toupper(char c) { … }


#if 0
/*
 * Commented out because cstring.h defines uprv_tolower() to be
 * the same as either uprv_asciitolower() or uprv_ebcdictolower()
 * to reduce the amount of code to cover with tests.
 *
 * Note that this uprv_tolower() definition is likely to work for most
 * charset families, not just ASCII and EBCDIC, because its #else branch
 * is written generically.
 */
U_CAPI char U_EXPORT2
uprv_tolower(char c) {
#if U_CHARSET_FAMILY==U_EBCDIC_FAMILY
    if(('A'<=c && c<='I') || ('J'<=c && c<='R') || ('S'<=c && c<='Z')) {
        c=(char)(c+('a'-'A'));
    }
#else
    if('A'<=c && c<='Z') {
        c=(char)(c+('a'-'A'));
    }
#endif
    return c;
}
#endif

U_CAPI char U_EXPORT2
uprv_asciitolower(char c) { … }

U_CAPI char U_EXPORT2
uprv_ebcdictolower(char c) { … }


U_CAPI char* U_EXPORT2
T_CString_toLowerCase(char* str)
{ … }

U_CAPI char* U_EXPORT2
T_CString_toUpperCase(char* str)
{ … }

/*
 * Takes a int32_t and fills in  a char* string with that number "radix"-based.
 * Does not handle negative values (makes an empty string for them).
 * Writes at most 12 chars ("-2147483647" plus NUL).
 * Returns the length of the string (not including the NUL).
 */
U_CAPI int32_t U_EXPORT2
T_CString_integerToString(char* buffer, int32_t v, int32_t radix)
{ … }



/*
 * Takes a int64_t and fills in  a char* string with that number "radix"-based.
 * Writes at most 21: chars ("-9223372036854775807" plus NUL).
 * Returns the length of the string, not including the terminating NUL.
 */
U_CAPI int32_t U_EXPORT2
T_CString_int64ToString(char* buffer, int64_t v, uint32_t radix)
{ … }


U_CAPI int32_t U_EXPORT2
T_CString_stringToInteger(const char *integerString, int32_t radix)
{ … }

U_CAPI int U_EXPORT2
uprv_stricmp(const char *str1, const char *str2) { … }

U_CAPI int U_EXPORT2
uprv_strnicmp(const char *str1, const char *str2, uint32_t n) { … }

U_CAPI char* U_EXPORT2
uprv_strdup(const char *src) { … }

U_CAPI char* U_EXPORT2
uprv_strndup(const char *src, int32_t n) { … }