StringOf.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
// Copyright (c) 1994, 1996 James Clark
// See the file COPYING for copying permission.
#pragma ident "%Z%%M% %I% %E% SMI"
#ifndef StringOf_INCLUDED
#define StringOf_INCLUDED 1
// The file is called StringOf to distinguish it from string.h on
// case-insensitive file systems.
// This offers a subset of the interface offered by the standard C++
// basic_string class as defined in the Jan 96 WP.
// Code in SP currently assumes that size_type is size_t.
#include <stddef.h>
#include <string.h>
#include "Boolean.h"
#ifdef SP_NAMESPACE
namespace SP_NAMESPACE {
#endif
template<class T>
class String {
public:
typedef size_t size_type;
typedef T *iterator;
typedef const T *const_iterator;
String();
~String() { if (ptr_) delete [] ptr_; }
String(const T *, size_t);
String(const String<T> &);
String<T> &operator=(const String<T> &);
size_t size() const { return length_; }
String<T> &assign(const T *, size_t);
String<T> &insert(size_t i, const String<T> &s);
void swap(String<T> &str);
T operator[](size_t i) const { return ptr_[i]; }
T &operator[](size_t i) { return ptr_[i]; }
iterator begin() { return ptr_; }
const_iterator begin() const { return ptr_; }
const T *data() const { return ptr_; }
String<T> &operator+=(T c) {
if (length_ >= alloc_)
grow(1);
ptr_[length_++] = c;
return *this;
}
String<T> &operator+=(const String<T> &s) {
append(s.ptr_, s.length_);
return *this;
}
String<T> &append(const T *, size_t);
Boolean operator==(const String<T> &s) const {
return (length_ == s.length_
&& (length_ == 0
|| (*ptr_ == *s.ptr_
&& (memcmp(ptr_ + 1, s.ptr_ + 1, (length_ - 1)*sizeof(T))
== 0))));
}
Boolean operator!=(const String<T> &str) const {
return !(*this == str);
}
void resize(size_t n);
private:
void grow(size_t);
T *ptr_;
size_t length_;
size_t alloc_;
};
#ifdef SP_NAMESPACE
}
#endif
#endif /* not StringOf_INCLUDED */
#ifdef SP_DEFINE_TEMPLATES
#include "StringOf.cxx"
#endif