str.h

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C头文件 代码 · 共 88 行

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*                            Open Watcom Project
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#ifndef __STR_H__
#define __STR_H__

// Str.h -- simple string class


#include <string.h>

const int _BlkSize = 16*1024 - sizeof( void* );

class Str                       // SIMPLE STRING CLASS
{
    char *_str;                 // - memory

    class StoreList             // - list of Store entries
    {
        struct Store                // - storage class
        {
            Store* _next;           // - - next block
            char _data[ _BlkSize ]; // - - block of chars
        };

        Store* _list;           // - - the list
        unsigned _left;         // - - amount left in latest entry

    public:
        StoreList();            // - - CTOR()
        ~StoreList();           // - - DTOR
        char* alloc             // - - allocator( string )
            ( char const *);
        char* alloc             // - - allocator( vector, size )
            ( char const *, unsigned );
    };

public:
    Str( char const * );        // - CTOR( string )
    Str( char const *, unsigned);// - CTOR( vector, size );
    Str( Str const & );         // - CTOR( Str const & )
    int same( char const*, unsigned ); // - test if same
    unsigned size( void ) const; // - get size
    inline operator char const* // - conversion: to char const*
        ( void ) const;
    Str& operator =             // - assign string
        ( char const * );
};


Str::operator char const*       // CONVERSION TO char const*
    ( void ) const
{
    return _str;
}


#endif