/* -*- 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" // 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 }; 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) < 256) ? PRUnichar(kUpper2Lower[_ucs2]) : _ToLower(_ucs2)) #define TOUPPER(_ucs2) \ (((_ucs2) < 256) ? PRUnichar(kLower2Upper[_ucs2]) : _ToUpper(_ucs2)) static PRUnichar _ToLower(PRUnichar aChar) { // XXX need i18n code here return aChar; } static PRUnichar _ToUpper(PRUnichar aChar) { // XXX need i18n code here return aChar; } //---------------------------------------------------------------------- PRUnichar nsCRT::ToUpper(PRUnichar aChar) { return TOUPPER(aChar); } PRUnichar nsCRT::ToLower(PRUnichar aChar) { return TOLOWER(aChar); } PRInt32 nsCRT::strlen(const PRUnichar* s) { PRInt32 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 s1s2 */ 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 s1s2 */ PRInt32 nsCRT::strncmp(const PRUnichar* s1, const PRUnichar* s2, PRInt32 n) { if(s1 && s2) { if(0= 0) { PRUnichar c1 = *s1++; PRUnichar c2 = *s2++; if (c1 != c2) { if (c1 < c2) return -1; return 1; } if ((0==c1) || (0==c2)) break; } } else return 1; } 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 s1s2 */ 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 s1s2 */ PRInt32 nsCRT::strncasecmp(const PRUnichar* s1, const PRUnichar* s2, PRInt32 n) { if(s1 && s2) { if(0= 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; } } else return 1; } 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 s1s2 */ 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 s1s2 */ PRInt32 nsCRT::strncmp(const PRUnichar* s1, const char* s2, PRInt32 n) { if(s1 && s2) { if(0= 0) { 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; } } else return 1; } 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 s1s2 */ 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 s1s2 */ PRInt32 nsCRT::strncasecmp(const PRUnichar* s1, const char* s2, PRInt32 n) { if(s1 && s2){ if(0= 0) { 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; } } else return 1; } return 0; } PRInt32 nsCRT::HashCode(const PRUnichar* us) { PRInt32 rv = 0; if(us) { PRUnichar ch; while ((ch = *us++) != 0) { // FYI: rv = rv*37 + ch rv = ((rv << 5) + (rv << 2) + rv) + ch; } } return rv; } PRInt32 nsCRT::HashCode(const PRUnichar* us, PRInt32* uslenp) { PRInt32 rv = 0; PRInt32 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); }