80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
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// Copyright (c) 1994, 1996 James Clark
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// See the file COPYING for copying permission.
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#ifndef StringOf_INCLUDED
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#define StringOf_INCLUDED 1
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// The file is called StringOf to distinguish it from string.h on
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// case-insensitive file systems.
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// This offers a subset of the interface offered by the standard C++
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// basic_string class as defined in the Jan 96 WP.
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// Code in SP currently assumes that size_type is size_t.
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#include <stddef.h>
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#include <string.h>
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#include "Boolean.h"
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#ifdef SP_NAMESPACE
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namespace SP_NAMESPACE {
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#endif
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template<class T>
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class String {
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public:
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typedef size_t size_type;
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typedef T *iterator;
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typedef const T *const_iterator;
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String();
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~String() { if (ptr_) delete [] ptr_; }
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String(const T *, size_t);
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String(const String<T> &);
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String<T> &operator=(const String<T> &);
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size_t size() const { return length_; }
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String<T> &assign(const T *, size_t);
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String<T> &insert(size_t i, const String<T> &s);
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void swap(String<T> &str);
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T operator[](size_t i) const { return ptr_[i]; }
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T &operator[](size_t i) { return ptr_[i]; }
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iterator begin() { return ptr_; }
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const_iterator begin() const { return ptr_; }
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const T *data() const { return ptr_; }
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String<T> &operator+=(T c) {
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if (length_ >= alloc_)
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grow(1);
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ptr_[length_++] = c;
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return *this;
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}
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String<T> &operator+=(const String<T> &s) {
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append(s.ptr_, s.length_);
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return *this;
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}
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String<T> &append(const T *, size_t);
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Boolean operator==(const String<T> &s) const {
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return (length_ == s.length_
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&& (length_ == 0
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|| (*ptr_ == *s.ptr_
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&& (memcmp(ptr_ + 1, s.ptr_ + 1, (length_ - 1)*sizeof(T))
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== 0))));
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}
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Boolean operator!=(const String<T> &str) const {
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return !(*this == str);
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}
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void resize(size_t n);
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private:
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void grow(size_t);
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T *ptr_;
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size_t length_;
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size_t alloc_;
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};
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#ifdef SP_NAMESPACE
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}
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#endif
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#endif /* not StringOf_INCLUDED */
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#ifdef SP_DEFINE_TEMPLATES
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#include "StringOf.cxx"
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#endif
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