mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-10 18:00:15 +01:00
436 lines
13 KiB
C++
436 lines
13 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (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.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
|
|
/**
|
|
* 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 "nsIServiceManager.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
|
|
};
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
char nsCRT::ToUpper(char aChar)
|
|
{
|
|
return (char)kLower2Upper[(unsigned char)aChar];
|
|
}
|
|
|
|
char nsCRT::ToLower(char aChar)
|
|
{
|
|
return (char)kUpper2Lower[(unsigned char)aChar];
|
|
}
|
|
|
|
PRBool nsCRT::IsUpper(char aChar)
|
|
{
|
|
return aChar != nsCRT::ToLower(aChar);
|
|
}
|
|
|
|
PRBool nsCRT::IsLower(char 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* string, const char* delims, char* *newStr)
|
|
{
|
|
NS_ASSERTION(string, "Unlike regular strtok, the first argument cannot be null.");
|
|
|
|
char delimTable[DELIM_TABLE_SIZE];
|
|
PRUint32 i;
|
|
char* result;
|
|
char* str = string;
|
|
|
|
for (i = 0; i < DELIM_TABLE_SIZE; i++)
|
|
delimTable[i] = '\0';
|
|
|
|
for (i = 0; delims[i]; i++) {
|
|
SET_DELIM(delimTable, NS_STATIC_CAST(PRUint8, delims[i]));
|
|
}
|
|
NS_ASSERTION(delims[i] == '\0', "too many delimiters");
|
|
|
|
// skip to beginning
|
|
while (*str && IS_DELIM(delimTable, NS_STATIC_CAST(PRUint8, *str))) {
|
|
str++;
|
|
}
|
|
result = str;
|
|
|
|
// fix up the end of the token
|
|
while (*str) {
|
|
if (IS_DELIM(delimTable, NS_STATIC_CAST(PRUint8, *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.
|
|
* NOTE: We terminate the search upon encountering a NULL
|
|
*
|
|
* @update gess 11/10/99
|
|
* @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;
|
|
}
|
|
}
|
|
else {
|
|
if (s1) // s2 must have been null
|
|
return -1;
|
|
if (s2) // s1 must have been null
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Compare unichar string ptrs, stopping at the 1st null or nth char.
|
|
* NOTE: If either is null, we return 0.
|
|
* NOTE: We DO NOT terminate the search upon encountering NULL's before N
|
|
*
|
|
* @update gess 11/10/99
|
|
* @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;
|
|
}
|
|
} while (--n != 0);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
PRUnichar* nsCRT::strdup(const PRUnichar* str)
|
|
{
|
|
PRUint32 len = nsCRT::strlen(str);
|
|
return strndup(str, len);
|
|
}
|
|
|
|
PRUnichar* nsCRT::strndup(const PRUnichar* str, PRUint32 len)
|
|
{
|
|
nsCppSharedAllocator<PRUnichar> shared_allocator;
|
|
PRUnichar* rslt = shared_allocator.allocate(len + 1); // add one for the null
|
|
// PRUnichar* rslt = new PRUnichar[len + 1];
|
|
|
|
if (rslt == NULL) return NULL;
|
|
memcpy(rslt, str, len * sizeof(PRUnichar));
|
|
rslt[len] = 0;
|
|
return rslt;
|
|
}
|
|
|
|
/**
|
|
* |nsCRT::HashCode| is identical to |PL_HashString|, which tests
|
|
* (http://bugzilla.mozilla.org/showattachment.cgi?attach_id=26596)
|
|
* show to be the best hash among several other choices.
|
|
*
|
|
* We re-implement it here rather than calling it for two reasons:
|
|
* (1) in this interface, we also calculate the length of the
|
|
* string being hashed; and (2) the narrow and wide and `buffer' versions here
|
|
* will hash equivalent strings to the same value, e.g., "Hello" and L"Hello".
|
|
*/
|
|
PRUint32 nsCRT::HashCode(const char* str, PRUint32* resultingStrLen)
|
|
{
|
|
PRUint32 h = 0;
|
|
const char* s = str;
|
|
|
|
if (!str) return h;
|
|
|
|
unsigned char c;
|
|
while ( (c = *s++) )
|
|
h = (h>>28) ^ (h<<4) ^ c;
|
|
|
|
if ( resultingStrLen )
|
|
*resultingStrLen = (s-str)-1;
|
|
return h;
|
|
}
|
|
|
|
PRUint32 nsCRT::HashCode(const PRUnichar* str, PRUint32* resultingStrLen)
|
|
{
|
|
PRUint32 h = 0;
|
|
const PRUnichar* s = str;
|
|
|
|
if (!str) return h;
|
|
|
|
PRUnichar c;
|
|
while ( (c = *s++) )
|
|
h = (h>>28) ^ (h<<4) ^ c;
|
|
|
|
if ( resultingStrLen )
|
|
*resultingStrLen = (s-str)-1;
|
|
return h;
|
|
}
|
|
|
|
PRUint32 nsCRT::BufferHashCode(const PRUnichar* s, PRUint32 len)
|
|
{
|
|
PRUint32 h = 0;
|
|
const PRUnichar* done = s + len;
|
|
|
|
while ( s < done )
|
|
h = (h>>28) ^ (h<<4) ^ PRUint16(*s++); // cast to unsigned to prevent possible sign extension
|
|
|
|
return h;
|
|
}
|
|
|
|
// This should use NSPR but NSPR isn't exporting its PR_strtoll function
|
|
// Until then...
|
|
PRInt64 nsCRT::atoll(const char *str)
|
|
{
|
|
if (!str)
|
|
return LL_Zero();
|
|
|
|
PRInt64 ll = LL_Zero(), digitll = LL_Zero();
|
|
|
|
while (*str && *str >= '0' && *str <= '9') {
|
|
LL_MUL(ll, ll, 10);
|
|
LL_UI2L(digitll, (*str - '0'));
|
|
LL_ADD(ll, ll, digitll);
|
|
str++;
|
|
}
|
|
|
|
return ll;
|
|
}
|
|
|
|
/**
|
|
* Determine if given char in valid ascii range
|
|
*
|
|
* @update ftang 04.27.2000
|
|
* @param aChar is character to be tested
|
|
* @return TRUE if in ASCII range
|
|
*/
|
|
PRBool nsCRT::IsAscii(PRUnichar aChar) {
|
|
return (0x0080 > aChar);
|
|
}
|
|
/**
|
|
* Determine if given char in valid ascii range
|
|
*
|
|
* @update ftang 10.02.2001
|
|
* @param aString is null terminated to be tested
|
|
* @return TRUE if all characters aare in ASCII range
|
|
*/
|
|
PRBool nsCRT::IsAscii(const PRUnichar *aString) {
|
|
while(*aString) {
|
|
if( 0x0080 <= *aString)
|
|
return PR_FALSE;
|
|
aString++;
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
/**
|
|
* Determine if given char in valid ascii range
|
|
*
|
|
* @update ftang 10.02.2001
|
|
* @param aString is null terminated to be tested
|
|
* @return TRUE if all characters aare in ASCII range
|
|
*/
|
|
PRBool nsCRT::IsAscii(const char *aString) {
|
|
while(*aString) {
|
|
if( 0x80 & *aString)
|
|
return PR_FALSE;
|
|
aString++;
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
/**
|
|
* Determine whether the given string consists of valid ascii chars
|
|
*
|
|
* @param aString is null terminated
|
|
* @param aLength is the number of chars to test. This must be at most
|
|
* the number of chars in aString before the null terminator
|
|
* @return PR_TRUE if all chars are valid ASCII chars, PR_FALSE otherwise
|
|
*/
|
|
PRBool nsCRT::IsAscii(const char* aString, PRUint32 aLength)
|
|
{
|
|
const char* end = aString + aLength;
|
|
while (aString < end) {
|
|
NS_ASSERTION(*aString, "Null byte before end of data!");
|
|
if (0x80 & *aString)
|
|
return PR_FALSE;
|
|
++aString;
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
/**
|
|
* Determine if given char in valid alpha range
|
|
*
|
|
* @update rickg 03.10.2000
|
|
* @param aChar is character to be tested
|
|
* @return TRUE if in alpha range
|
|
*/
|
|
PRBool nsCRT::IsAsciiAlpha(PRUnichar aChar) {
|
|
// XXX i18n
|
|
if (((aChar >= 'A') && (aChar <= 'Z')) || ((aChar >= 'a') && (aChar <= 'z'))) {
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/**
|
|
* Determine if given char is a valid space character
|
|
*
|
|
* @update rickg 03.10.2000
|
|
* @param aChar is character to be tested
|
|
* @return TRUE if is valid space char
|
|
*/
|
|
PRBool nsCRT::IsAsciiSpace(PRUnichar aChar) {
|
|
// XXX i18n
|
|
if ((aChar == ' ') || (aChar == '\r') || (aChar == '\n') || (aChar == '\t')) {
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Determine if given char is valid digit
|
|
*
|
|
* @update rickg 03.10.2000
|
|
* @param aChar is character to be tested
|
|
* @return TRUE if char is a valid digit
|
|
*/
|
|
PRBool nsCRT::IsAsciiDigit(PRUnichar aChar) {
|
|
// XXX i18n
|
|
return PRBool((aChar >= '0') && (aChar <= '9'));
|
|
}
|