mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-28 11:28:38 +00:00
524 lines
15 KiB
C++
524 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
|
|
/**
|
|
* MODULE NOTES:
|
|
* @update gess7/30/98
|
|
*
|
|
* Much as I hate to do it, we were using string compares wrong.
|
|
* Often, programmers call functions like strcmp(s1,s2), and pass
|
|
* one or more null strings. Rather than blow up on these, I've
|
|
* added quick checks to ensure that cases like this don't cause
|
|
* us to fail.
|
|
*
|
|
* In general, if you pass a null into any of these string compare
|
|
* routines, we simply return 0.
|
|
*/
|
|
|
|
|
|
#include "nsCRT.h"
|
|
#include "nsUnicharUtilCIID.h"
|
|
#include "nsIServiceManager.h"
|
|
#include "nsICaseConversion.h"
|
|
|
|
|
|
// XXX Bug: These tables don't lowercase the upper 128 characters properly
|
|
|
|
// This table maps uppercase characters to lower case characters;
|
|
// characters that are neither upper nor lower case are unaffected.
|
|
static const unsigned char kUpper2Lower[256] = {
|
|
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
|
|
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
|
|
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
|
|
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
|
|
64,
|
|
|
|
// upper band mapped to lower [A-Z] => [a-z]
|
|
97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
|
|
112,113,114,115,116,117,118,119,120,121,122,
|
|
|
|
91, 92, 93, 94, 95,
|
|
96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
|
|
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
|
|
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
|
|
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
|
|
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
|
|
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
|
|
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
|
|
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
|
|
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
|
|
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255
|
|
};
|
|
|
|
static const unsigned char kLower2Upper[256] = {
|
|
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
|
|
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
|
|
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
|
|
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
|
|
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
|
|
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
|
|
96,
|
|
|
|
// lower band mapped to upper [a-z] => [A-Z]
|
|
65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
|
|
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,
|
|
|
|
123,124,125,126,127,
|
|
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
|
|
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
|
|
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
|
|
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
|
|
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
|
|
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
|
|
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
|
|
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255
|
|
};
|
|
|
|
// XXX bug: this doesn't map 0x80 to 0x9f properly
|
|
static const PRUnichar kIsoLatin1ToUCS2[256] = {
|
|
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
|
|
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
|
|
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
|
|
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
|
|
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
|
|
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
|
|
96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
|
|
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
|
|
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
|
|
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
|
|
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
|
|
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
|
|
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
|
|
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
|
|
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
|
|
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255
|
|
};
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
#define TOLOWER(_ucs2) \
|
|
(((_ucs2) < 128) ? PRUnichar(kUpper2Lower[_ucs2]) : _ToLower(_ucs2))
|
|
|
|
#define TOUPPER(_ucs2) \
|
|
(((_ucs2) < 128) ? PRUnichar(kLower2Upper[_ucs2]) : _ToUpper(_ucs2))
|
|
|
|
class HandleCaseConversionShutdown : public nsIShutdownListener {
|
|
public :
|
|
NS_IMETHOD OnShutdown(const nsCID& cid, nsISupports* service);
|
|
HandleCaseConversionShutdown(void) { NS_INIT_REFCNT(); }
|
|
virtual ~HandleCaseConversionShutdown(void) {}
|
|
NS_DECL_ISUPPORTS
|
|
};
|
|
static NS_DEFINE_CID(kUnicharUtilCID, NS_UNICHARUTIL_CID);
|
|
static NS_DEFINE_IID(kICaseConversionIID, NS_ICASECONVERSION_IID);
|
|
|
|
static nsICaseConversion * gCaseConv = NULL;
|
|
|
|
static NS_DEFINE_IID(kIShutdownListenerIID, NS_ISHUTDOWNLISTENER_IID);
|
|
NS_IMPL_ISUPPORTS(HandleCaseConversionShutdown, kIShutdownListenerIID);
|
|
|
|
nsresult
|
|
HandleCaseConversionShutdown::OnShutdown(const nsCID& cid, nsISupports* service)
|
|
{
|
|
if (cid.Equals(kUnicharUtilCID)) {
|
|
NS_ASSERTION(service == gCaseConv, "wrong service!");
|
|
nsrefcnt cnt = gCaseConv->Release();
|
|
gCaseConv = NULL;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
static HandleCaseConversionShutdown* gListener = NULL;
|
|
|
|
static void StartUpCaseConversion()
|
|
{
|
|
nsresult err;
|
|
|
|
if ( NULL == gListener )
|
|
{
|
|
gListener = new HandleCaseConversionShutdown();
|
|
gListener->AddRef();
|
|
}
|
|
err = nsServiceManager::GetService(kUnicharUtilCID, kICaseConversionIID,
|
|
(nsISupports**) &gCaseConv, gListener);
|
|
}
|
|
static void CheckCaseConversion()
|
|
{
|
|
if(NULL == gCaseConv )
|
|
StartUpCaseConversion();
|
|
|
|
NS_ASSERTION( gCaseConv != NULL , "cannot obtain UnicharUtil");
|
|
|
|
}
|
|
|
|
static PRUnichar _ToLower(PRUnichar aChar)
|
|
{
|
|
PRUnichar oLower;
|
|
CheckCaseConversion();
|
|
nsresult err = gCaseConv->ToLower(aChar, &oLower);
|
|
NS_ASSERTION( NS_SUCCEEDED(err), "failed to communicate to UnicharUtil");
|
|
return ( NS_SUCCEEDED(err) ) ? oLower : aChar ;
|
|
}
|
|
|
|
static PRUnichar _ToUpper(PRUnichar aChar)
|
|
{
|
|
nsresult err;
|
|
PRUnichar oUpper;
|
|
CheckCaseConversion();
|
|
err = gCaseConv->ToUpper(aChar, &oUpper);
|
|
NS_ASSERTION( NS_SUCCEEDED(err), "failed to communicate to UnicharUtil");
|
|
return ( NS_SUCCEEDED(err) ) ? oUpper : aChar ;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
PRUnichar nsCRT::ToUpper(PRUnichar aChar)
|
|
{
|
|
return TOUPPER(aChar);
|
|
}
|
|
|
|
PRUnichar nsCRT::ToLower(PRUnichar aChar)
|
|
{
|
|
return TOLOWER(aChar);
|
|
}
|
|
|
|
PRBool nsCRT::IsUpper(PRUnichar aChar)
|
|
{
|
|
return aChar != nsCRT::ToLower(aChar);
|
|
}
|
|
|
|
PRBool nsCRT::IsLower(PRUnichar aChar)
|
|
{
|
|
return aChar != nsCRT::ToUpper(aChar);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// My lovely strtok routine
|
|
|
|
#define IS_DELIM(m, c) ((m)[(c) >> 3] & (1 << ((c) & 7)))
|
|
#define SET_DELIM(m, c) ((m)[(c) >> 3] |= (1 << ((c) & 7)))
|
|
#define DELIM_TABLE_SIZE 32
|
|
|
|
char* nsCRT::strtok(char* str, const char* delims, char* *newStr)
|
|
{
|
|
NS_ASSERTION(str, "Unlike regular strtok, the first argument cannot be null.");
|
|
|
|
char delimTable[DELIM_TABLE_SIZE];
|
|
PRUint32 i;
|
|
char* result;
|
|
|
|
for (i = 0; i < DELIM_TABLE_SIZE; i++)
|
|
delimTable[i] = '\0';
|
|
|
|
for (i = 0; i < DELIM_TABLE_SIZE && delims[i]; i++) {
|
|
SET_DELIM(delimTable, delims[i]);
|
|
}
|
|
NS_ASSERTION(delims[i] == '\0', "too many delimiters");
|
|
|
|
// skip to beginning
|
|
while (*str && IS_DELIM(delimTable, *str)) {
|
|
str++;
|
|
}
|
|
result = str;
|
|
|
|
// fix up the end of the token
|
|
while (*str) {
|
|
if (IS_DELIM(delimTable, *str)) {
|
|
*str++ = '\0';
|
|
break;
|
|
}
|
|
str++;
|
|
}
|
|
*newStr = str;
|
|
|
|
return str == result ? NULL : result;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
PRUint32 nsCRT::strlen(const PRUnichar* s)
|
|
{
|
|
PRUint32 len = 0;
|
|
if(s) {
|
|
while (*s++ != 0) {
|
|
len++;
|
|
}
|
|
}
|
|
return len;
|
|
}
|
|
|
|
|
|
/**
|
|
* Compare unichar string ptrs, stopping at the 1st null
|
|
* NOTE: If both are null, we return 0.
|
|
* @update gess7/30/98
|
|
* @param s1 and s2 both point to unichar strings
|
|
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
|
|
*/
|
|
PRInt32 nsCRT::strcmp(const PRUnichar* s1, const PRUnichar* s2)
|
|
{
|
|
if(s1 && s2) {
|
|
for (;;) {
|
|
PRUnichar c1 = *s1++;
|
|
PRUnichar c2 = *s2++;
|
|
if (c1 != c2) {
|
|
if (c1 < c2) return -1;
|
|
return 1;
|
|
}
|
|
if ((0==c1) || (0==c2)) break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Compare unichar string ptrs, stopping at the 1st null or nth char.
|
|
* NOTE: If either is null, we return 0.
|
|
* @update gess7/30/98
|
|
* @param s1 and s2 both point to unichar strings
|
|
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
|
|
*/
|
|
PRInt32 nsCRT::strncmp(const PRUnichar* s1, const PRUnichar* s2, PRUint32 n)
|
|
{
|
|
if(s1 && s2) {
|
|
if(n != 0) {
|
|
do {
|
|
PRUnichar c1 = *s1++;
|
|
PRUnichar c2 = *s2++;
|
|
if (c1 != c2) {
|
|
if (c1 < c2) return -1;
|
|
return 1;
|
|
}
|
|
if ((0==c1) || (0==c2)) break;
|
|
} while (--n != 0);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* Compare unichar string ptrs without regard to case
|
|
* NOTE: If both are null, we return 0.
|
|
* @update gess7/30/98
|
|
* @param s1 and s2 both point to unichar strings
|
|
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
|
|
*/
|
|
PRInt32 nsCRT::strcasecmp(const PRUnichar* s1, const PRUnichar* s2)
|
|
{
|
|
if(s1 && s2) {
|
|
for (;;) {
|
|
PRUnichar c1 = *s1++;
|
|
PRUnichar c2 = *s2++;
|
|
if (c1 != c2) {
|
|
c1 = TOLOWER(c1);
|
|
c2 = TOLOWER(c2);
|
|
if (c1 != c2) {
|
|
if (c1 < c2) return -1;
|
|
return 1;
|
|
}
|
|
}
|
|
if ((0==c1) || (0==c2)) break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Compare unichar string ptrs, stopping at the 1st null or nth char;
|
|
* also ignoring the case of characters.
|
|
* NOTE: If both are null, we return 0.
|
|
* @update gess7/30/98
|
|
* @param s1 and s2 both point to unichar strings
|
|
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
|
|
*/
|
|
PRInt32 nsCRT::strncasecmp(const PRUnichar* s1, const PRUnichar* s2, PRUint32 n)
|
|
{
|
|
if(s1 && s2) {
|
|
if(0<n){
|
|
while (--n >= 0) {
|
|
PRUnichar c1 = *s1++;
|
|
PRUnichar c2 = *s2++;
|
|
if (c1 != c2) {
|
|
c1 = TOLOWER(c1);
|
|
c2 = TOLOWER(c2);
|
|
if (c1 != c2) {
|
|
if (c1 < c2) return -1;
|
|
return 1;
|
|
}
|
|
}
|
|
if ((0==c1) || (0==c2)) break;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* Compare a unichar string ptr to cstring.
|
|
* NOTE: If both are null, we return 0.
|
|
* @update gess7/30/98
|
|
* @param s1 points to unichar string
|
|
* @param s2 points to cstring
|
|
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
|
|
*/
|
|
PRInt32 nsCRT::strcmp(const PRUnichar* s1, const char* s2)
|
|
{
|
|
if(s1 && s2) {
|
|
for (;;) {
|
|
PRUnichar c1 = *s1++;
|
|
PRUnichar c2 = kIsoLatin1ToUCS2[*(const unsigned char*)s2++];
|
|
if (c1 != c2) {
|
|
if (c1 < c2) return -1;
|
|
return 1;
|
|
}
|
|
if ((0==c1) || (0==c2)) break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* Compare a unichar string ptr to cstring, up to N chars.
|
|
* NOTE: If both are null, we return 0.
|
|
* @update gess7/30/98
|
|
* @param s1 points to unichar string
|
|
* @param s2 points to cstring
|
|
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
|
|
*/
|
|
PRInt32 nsCRT::strncmp(const PRUnichar* s1, const char* s2, PRUint32 n)
|
|
{
|
|
if(s1 && s2) {
|
|
if(n != 0){
|
|
do {
|
|
PRUnichar c1 = *s1++;
|
|
PRUnichar c2 = kIsoLatin1ToUCS2[*(const unsigned char*)s2++];
|
|
if (c1 != c2) {
|
|
if (c1 < c2) return -1;
|
|
return 1;
|
|
}
|
|
if ((0==c1) || (0==c2)) break;
|
|
} while (--n != 0);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Compare a unichar string ptr to cstring without regard to case
|
|
* NOTE: If both are null, we return 0.
|
|
* @update gess7/30/98
|
|
* @param s1 points to unichar string
|
|
* @param s2 points to cstring
|
|
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
|
|
*/
|
|
PRInt32 nsCRT::strcasecmp(const PRUnichar* s1, const char* s2)
|
|
{
|
|
if(s1 && s2) {
|
|
for (;;) {
|
|
PRUnichar c1 = *s1++;
|
|
PRUnichar c2 = kIsoLatin1ToUCS2[*(const unsigned char*)s2++];
|
|
if (c1 != c2) {
|
|
c1 = TOLOWER(c1);
|
|
c2 = TOLOWER(c2);
|
|
if (c1 != c2) {
|
|
if (c1 < c2) return -1;
|
|
return 1;
|
|
}
|
|
}
|
|
if ((0==c1) || (0==c2)) break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Caseless compare up to N chars between unichar string ptr to cstring.
|
|
* NOTE: If both are null, we return 0.
|
|
* @update gess7/30/98
|
|
* @param s1 points to unichar string
|
|
* @param s2 points to cstring
|
|
* @return 0 if they match, -1 if s1<s2; 1 if s1>s2
|
|
*/
|
|
PRInt32 nsCRT::strncasecmp(const PRUnichar* s1, const char* s2, PRUint32 n)
|
|
{
|
|
if(s1 && s2){
|
|
if(n != 0){
|
|
do {
|
|
PRUnichar c1 = *s1++;
|
|
PRUnichar c2 = kIsoLatin1ToUCS2[*(const unsigned char*)s2++];
|
|
if (c1 != c2) {
|
|
c1 = TOLOWER(c1);
|
|
c2 = TOLOWER(c2);
|
|
if (c1 != c2) {
|
|
if (c1 < c2) return -1;
|
|
return 1;
|
|
}
|
|
}
|
|
if (c1 == 0) break;
|
|
} while (--n != 0);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
PRUnichar* nsCRT::strdup(const PRUnichar* str)
|
|
{
|
|
PRUint32 len = nsCRT::strlen(str) + 1; // add one for null
|
|
PRUnichar* rslt = new PRUnichar[len];
|
|
if (rslt == NULL) return NULL;
|
|
nsCRT::memcpy(rslt, str, len * sizeof(PRUnichar));
|
|
return rslt;
|
|
}
|
|
|
|
PRUint32 nsCRT::HashValue(const PRUnichar* us)
|
|
{
|
|
PRUint32 rv = 0;
|
|
if(us) {
|
|
PRUnichar ch;
|
|
while ((ch = *us++) != 0) {
|
|
// FYI: rv = rv*37 + ch
|
|
rv = ((rv << 5) + (rv << 2) + rv) + ch;
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
PRUint32 nsCRT::HashValue(const PRUnichar* us, PRUint32* uslenp)
|
|
{
|
|
PRUint32 rv = 0;
|
|
PRUint32 len = 0;
|
|
PRUnichar ch;
|
|
while ((ch = *us++) != 0) {
|
|
// FYI: rv = rv*37 + ch
|
|
rv = ((rv << 5) + (rv << 2) + rv) + ch;
|
|
len++;
|
|
}
|
|
*uslenp = len;
|
|
return rv;
|
|
}
|
|
|
|
PRInt32 nsCRT::atoi( const PRUnichar *string )
|
|
{
|
|
return atoi(string);
|
|
}
|
|
|