Mercurial > illumos > onarm
view usr/src/cmd/man/src/util/nsgmls.src/include/StringOf.cxx @ 4:1a15d5aaf794
synchronized with onnv_86 (6202) in onnv-gate
author | Koji Uno <koji.uno@sun.com> |
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date | Mon, 31 Aug 2009 14:38:03 +0900 |
parents | c9caec207d52 |
children |
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// Copyright (c) 1994, 1996 James Clark // See the file COPYING for copying permission. #pragma ident "%Z%%M% %I% %E% SMI" #ifndef StringOf_DEF_INCLUDED #define StringOf_DEF_INCLUDED 1 #include <string.h> #include <stddef.h> #ifdef SP_NAMESPACE namespace SP_NAMESPACE { #endif template<class T> String<T>::String(const T *ptr, size_t length) : length_(length), alloc_(length) { if (length) { ptr_ = new T[length]; memcpy(ptr_, ptr, length*sizeof(T)); } else ptr_ = 0; } template<class T> String<T>::String() : ptr_(0), length_(0), alloc_(0) { } template<class T> String<T>::String(const String<T> &s) : length_(s.length_), alloc_(s.length_) { if (length_) { ptr_ = new T[length_]; memcpy(ptr_, s.ptr_, length_*sizeof(T)); } else ptr_ = 0; } template<class T> String<T> &String<T>::operator=(const String<T> &s) { if (&s != this) { if (s.length_ > alloc_) { T *oldPtr = ptr_; ptr_ = new T[alloc_ = s.length_]; if (oldPtr) delete [] oldPtr; } memcpy(ptr_, s.ptr_, s.length_*sizeof(T)); length_ = s.length_; } return *this; } template<class T> String<T> &String<T>::insert(size_t i, const String<T> &s) { if (length_ + s.length_ > alloc_) grow(s.length_); for (size_t n = length_ - i; n > 0; n--) ptr_[i + n - 1 + s.length_] = ptr_[i + n - 1]; length_ += s.length_; memcpy(ptr_ + i, s.ptr_, s.length_*sizeof(T)); return *this; } template<class T> String<T> &String<T>::append(const T *p, size_t length) { if (length_ + length > alloc_) grow(length); memcpy(ptr_ + length_, p, length*sizeof(T)); length_ += length; return *this; } template<class T> void String<T>::grow(size_t n) { size_t newAlloc = alloc_; if (alloc_ < n) newAlloc += n + 16; else newAlloc += alloc_; T *s = new T[newAlloc]; memcpy(s, ptr_, length_*sizeof(T)); delete [] ptr_; ptr_ = s; alloc_ = newAlloc; } template<class T> void String<T>::swap(String<T> &to) { { T *tem = to.ptr_; to.ptr_ = ptr_; ptr_ = tem; } { size_t tem = to.length_; to.length_ = length_; length_ = tem; } { size_t tem = to.alloc_; to.alloc_ = alloc_; alloc_ = tem; } } template<class T> String<T> &String<T>::assign(const T *p, size_t n) { if (alloc_ < n) { T *oldPtr = ptr_; ptr_ = new T[n]; alloc_ = n; if (oldPtr) delete [] oldPtr; } length_ = n; for(T *to = ptr_; n > 0; n--, to++, p++) *to = *p; return *this; } template<class T> void String<T>::resize(size_t n) { if (alloc_ < n) { T *oldPtr = ptr_; ptr_ = new T[n]; alloc_ = n; if (length_ > 0) { memcpy(ptr_, oldPtr, length_*sizeof(T)); delete [] oldPtr; } } length_ = n; } #ifdef SP_NAMESPACE } #endif #endif /* not StringOf_DEF_INCLUDED */