mirror of
https://github.com/godotengine/godot.git
synced 2024-12-15 10:12:40 +08:00
342 lines
8.6 KiB
C++
342 lines
8.6 KiB
C++
// © 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) {
|
|
#if U_CHARSET_FAMILY==U_EBCDIC_FAMILY
|
|
return
|
|
('a'<=c && c<='i') || ('j'<=c && c<='r') || ('s'<=c && c<='z') ||
|
|
('A'<=c && c<='I') || ('J'<=c && c<='R') || ('S'<=c && c<='Z');
|
|
#else
|
|
return ('a'<=c && c<='z') || ('A'<=c && c<='Z');
|
|
#endif
|
|
}
|
|
|
|
U_CAPI char U_EXPORT2
|
|
uprv_toupper(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;
|
|
}
|
|
|
|
|
|
#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) {
|
|
if(0x41<=c && c<=0x5a) {
|
|
c=(char)(c+0x20);
|
|
}
|
|
return c;
|
|
}
|
|
|
|
U_CAPI char U_EXPORT2
|
|
uprv_ebcdictolower(char c) {
|
|
if( (0xc1<=(uint8_t)c && (uint8_t)c<=0xc9) ||
|
|
(0xd1<=(uint8_t)c && (uint8_t)c<=0xd9) ||
|
|
(0xe2<=(uint8_t)c && (uint8_t)c<=0xe9)
|
|
) {
|
|
c=(char)(c-0x40);
|
|
}
|
|
return c;
|
|
}
|
|
|
|
|
|
U_CAPI char* U_EXPORT2
|
|
T_CString_toLowerCase(char* str)
|
|
{
|
|
char* origPtr = str;
|
|
|
|
if (str) {
|
|
do
|
|
*str = (char)uprv_tolower(*str);
|
|
while (*(str++));
|
|
}
|
|
|
|
return origPtr;
|
|
}
|
|
|
|
U_CAPI char* U_EXPORT2
|
|
T_CString_toUpperCase(char* str)
|
|
{
|
|
char* origPtr = str;
|
|
|
|
if (str) {
|
|
do
|
|
*str = (char)uprv_toupper(*str);
|
|
while (*(str++));
|
|
}
|
|
|
|
return origPtr;
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
char tbuf[30];
|
|
int32_t tbx = sizeof(tbuf);
|
|
uint8_t digit;
|
|
int32_t length = 0;
|
|
uint32_t uval;
|
|
|
|
U_ASSERT(radix>=2 && radix<=16);
|
|
uval = (uint32_t) v;
|
|
if(v<0 && radix == 10) {
|
|
/* Only in base 10 do we conside numbers to be signed. */
|
|
uval = (uint32_t)(-v);
|
|
buffer[length++] = '-';
|
|
}
|
|
|
|
tbx = sizeof(tbuf)-1;
|
|
tbuf[tbx] = 0; /* We are generating the digits backwards. Null term the end. */
|
|
do {
|
|
digit = (uint8_t)(uval % radix);
|
|
tbuf[--tbx] = (char)(T_CString_itosOffset(digit));
|
|
uval = uval / radix;
|
|
} while (uval != 0);
|
|
|
|
/* copy converted number into user buffer */
|
|
uprv_strcpy(buffer+length, tbuf+tbx);
|
|
length += sizeof(tbuf) - tbx -1;
|
|
return length;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* 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 NULL.
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
T_CString_int64ToString(char* buffer, int64_t v, uint32_t radix)
|
|
{
|
|
char tbuf[30];
|
|
int32_t tbx = sizeof(tbuf);
|
|
uint8_t digit;
|
|
int32_t length = 0;
|
|
uint64_t uval;
|
|
|
|
U_ASSERT(radix>=2 && radix<=16);
|
|
uval = (uint64_t) v;
|
|
if(v<0 && radix == 10) {
|
|
/* Only in base 10 do we conside numbers to be signed. */
|
|
uval = (uint64_t)(-v);
|
|
buffer[length++] = '-';
|
|
}
|
|
|
|
tbx = sizeof(tbuf)-1;
|
|
tbuf[tbx] = 0; /* We are generating the digits backwards. Null term the end. */
|
|
do {
|
|
digit = (uint8_t)(uval % radix);
|
|
tbuf[--tbx] = (char)(T_CString_itosOffset(digit));
|
|
uval = uval / radix;
|
|
} while (uval != 0);
|
|
|
|
/* copy converted number into user buffer */
|
|
uprv_strcpy(buffer+length, tbuf+tbx);
|
|
length += sizeof(tbuf) - tbx -1;
|
|
return length;
|
|
}
|
|
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
T_CString_stringToInteger(const char *integerString, int32_t radix)
|
|
{
|
|
char *end;
|
|
return uprv_strtoul(integerString, &end, radix);
|
|
|
|
}
|
|
|
|
U_CAPI int U_EXPORT2
|
|
uprv_stricmp(const char *str1, const char *str2) {
|
|
if(str1==NULL) {
|
|
if(str2==NULL) {
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
} else if(str2==NULL) {
|
|
return 1;
|
|
} else {
|
|
/* compare non-NULL strings lexically with lowercase */
|
|
int rc;
|
|
unsigned char c1, c2;
|
|
|
|
for(;;) {
|
|
c1=(unsigned char)*str1;
|
|
c2=(unsigned char)*str2;
|
|
if(c1==0) {
|
|
if(c2==0) {
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
} else if(c2==0) {
|
|
return 1;
|
|
} else {
|
|
/* compare non-zero characters with lowercase */
|
|
rc=(int)(unsigned char)uprv_tolower(c1)-(int)(unsigned char)uprv_tolower(c2);
|
|
if(rc!=0) {
|
|
return rc;
|
|
}
|
|
}
|
|
++str1;
|
|
++str2;
|
|
}
|
|
}
|
|
}
|
|
|
|
U_CAPI int U_EXPORT2
|
|
uprv_strnicmp(const char *str1, const char *str2, uint32_t n) {
|
|
if(str1==NULL) {
|
|
if(str2==NULL) {
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
} else if(str2==NULL) {
|
|
return 1;
|
|
} else {
|
|
/* compare non-NULL strings lexically with lowercase */
|
|
int rc;
|
|
unsigned char c1, c2;
|
|
|
|
for(; n--;) {
|
|
c1=(unsigned char)*str1;
|
|
c2=(unsigned char)*str2;
|
|
if(c1==0) {
|
|
if(c2==0) {
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
} else if(c2==0) {
|
|
return 1;
|
|
} else {
|
|
/* compare non-zero characters with lowercase */
|
|
rc=(int)(unsigned char)uprv_tolower(c1)-(int)(unsigned char)uprv_tolower(c2);
|
|
if(rc!=0) {
|
|
return rc;
|
|
}
|
|
}
|
|
++str1;
|
|
++str2;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_CAPI char* U_EXPORT2
|
|
uprv_strdup(const char *src) {
|
|
size_t len = uprv_strlen(src) + 1;
|
|
char *dup = (char *) uprv_malloc(len);
|
|
|
|
if (dup) {
|
|
uprv_memcpy(dup, src, len);
|
|
}
|
|
|
|
return dup;
|
|
}
|
|
|
|
U_CAPI char* U_EXPORT2
|
|
uprv_strndup(const char *src, int32_t n) {
|
|
char *dup;
|
|
|
|
if(n < 0) {
|
|
dup = uprv_strdup(src);
|
|
} else {
|
|
dup = (char*)uprv_malloc(n+1);
|
|
if (dup) {
|
|
uprv_memcpy(dup, src, n);
|
|
dup[n] = 0;
|
|
}
|
|
}
|
|
|
|
return dup;
|
|
}
|