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109 lines
3.2 KiB
C++
109 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#pragma once
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#include "fredmem.h"
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#define cstringMaxInternalLen 30
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class cstring
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{
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public:
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inline cstring ()
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{ haveExternalSpace = false; space.internal[0] = 0; }
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inline cstring (const char *s)
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{ haveExternalSpace = false; assign (s); }
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inline cstring (const unsigned char *ps)
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{ haveExternalSpace = false; assign (ps+1, ps[0]); }
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inline cstring (const cstring& s)
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{ haveExternalSpace = false; assign (s.data(), s.length() ); }
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inline cstring( void* ptr, long len )
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{ haveExternalSpace = false; assign( ptr, len ); }
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inline ~cstring () { reserve (0, false); }
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char& operator[] (int i) { return data()[i]; }
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inline void operator= (const char *s);
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inline void operator= (const unsigned char *ps);
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inline void operator= (const cstring& s);
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void operator+= (const char *s);
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void truncAt (char c);
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// comparison
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inline int operator== (const cstring& s);
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inline int operator== (const char *s);
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inline int operator!= (const cstring& s);
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inline int operator!= (const char *s);
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// query
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inline const char* data() const { return haveExternalSpace? space.external: space.internal; }
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inline operator const char* () const { return data(); }
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/* This is not a bug because
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inline operator char* () { return data(); }
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cannot convert a "const cstring" to "char *"
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This can be avoided by adding:
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inline operator const char* () const { return data(); }
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*/
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inline char* data() { return haveExternalSpace? space.external: space.internal; }
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inline operator char* () { return data(); }
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inline int length() const { return strlen (data()); }
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char* reserve (int len, Boolean preserve = false);
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private:
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void assign (const char *s) { assign (s, s? strlen (s): 0); }
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void assign (const void *sd, int len);
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union {
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char* external;
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char internal [cstringMaxInternalLen+1];
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} space;
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int haveExternalSpace;
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};
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inline void
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cstring::operator= (const char *s) {
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assign (s);
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}
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inline void
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cstring::operator= (const unsigned char *ps) {
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assign (ps+1, ps[0]);
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}
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inline void
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cstring::operator= (const cstring& s) {
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assign (s.data(), s.length() );
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}
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inline int
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cstring::operator== (const cstring& s) {
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return !strcmp (data(), s.data());
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}
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inline int
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cstring::operator== (const char *s) {
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return !strcmp (data(), s);
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}
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inline int
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cstring::operator!= (const cstring& s) {
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return strcmp (data(), s.data());
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}
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inline int
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cstring::operator!= (const char *s) {
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return strcmp (data(), s);
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}
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