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754 lines
20 KiB
C++
754 lines
20 KiB
C++
//----------------------------------------------------------------------------------------
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// PascalString.h
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// Copyright © 1985-1994 by Apple Computer, Inc. All rights reserved.
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//----------------------------------------------------------------------------------------
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// ¥ Updated by Jeroen Schalk - DTS
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// ¥ Use MABlockMove, not memcpy(), memmove(), strncpy().
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// ¥ Changed default constructors to initialize to empty string.
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// ¥ Changed number of temporary strings from 4 to 8
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// ¥ Make operator[] and unsigned char*() inline
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// ¥ Fix bugs in constructors out of const unsigned char* str
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// ¥ Optimized constructors to only move required data
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// ¥ General cleanup of code for readability
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#pragma once
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#ifndef __PASCALSTRING__
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#define __PASCALSTRING__
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#ifndef __MEMORY__
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#include <Memory.h>
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#endif
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#ifndef __TYPES__
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#include <Types.h>
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#endif
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#ifndef __TEXTUTILS__
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#include <TextUtils.h>
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#endif
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#ifndef __OSUTILS__
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#include <OSUtils.h>
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#endif
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#ifndef __STRING__
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#include <string.h>
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#endif
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// Forward declaration for all the CString classes.
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struct CString;
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struct CStr255;
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struct CStr63;
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struct CStr32;
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struct CStr31;
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typedef const CStr255& ConstCStr255Param;
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typedef const CStr63& ConstCStr63Param;
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typedef const CStr32& ConstCStr32Param;
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typedef const CStr31& ConstCStr31Param;
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#ifdef Length
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#undef Length
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#endif
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// Some constants defining the length of each of the CString types.
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const short kLengthByte = 1;
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const short kBaseLen = 2;
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const short kStr255Len = 255;
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const short kStr63Len = 63;
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const short kStr32Len = 32;
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const short kStr31Len = 31;
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// Number of temporary strings
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const short kTempCStrings = 8;
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//----------------------------------------------------------------------------------------
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// MABlockMove: BlockMoveData() is fastest on PowerPC, memcpy() on 68K
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//----------------------------------------------------------------------------------------
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#if powerc
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#define MABlockMove(srcPtr, destPtr, byteCount) \
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::BlockMoveData(Ptr(srcPtr), Ptr(destPtr), Size(byteCount))
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#else
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#define MABlockMove(srcPtr, destPtr, byteCount) \
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::memcpy(destPtr, srcPtr, size_t(byteCount))
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#endif
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//----------------------------------------------------------------------------------------
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// MABlockMoveOverlap: BlockMoveData() is fastest on PowerPC, memmove() on 68K
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//----------------------------------------------------------------------------------------
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#if powerc
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#define MABlockMoveOverlap(srcPtr, destPtr, byteCount) \
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::BlockMoveData(Ptr(srcPtr), Ptr(destPtr), Size(byteCount))
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#else
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#define MABlockMoveOverlap(srcPtr, destPtr, byteCount) \
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::memmove(destPtr, srcPtr, size_t(byteCount))
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#endif
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//----------------------------------------------------------------------------------------
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// CString: Superclass of all Pascal string compatible string classes.
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//----------------------------------------------------------------------------------------
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typedef struct CString *CStringPtr, **CStringHandle;
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struct CString
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{
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public:
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unsigned char fStr[kBaseLen];
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protected:
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CString() {}
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// This is here (and protected) to stop people trying to instantiate CString.
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// To do so is very bad, because it's suicide to make one of these! There are
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// only 2 bytes of data!
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void InsertHelper(const CString& insStr, short pos, short maxLength);
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void InsertHelper(const char* insStr, short pos, short maxLength);
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public:
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// Basic length method, inherited by all derived classes. Define one that returns a
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// reference. Can be used as an lvalue and only can be applied to non-const Strings.
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inline unsigned char& Length()
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{
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return fStr[0];
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} // for non-const CString
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inline unsigned char Length() const
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{
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return fStr[0];
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} // for const CString
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inline Boolean IsEmpty()
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{
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return fStr[0] <= 0;
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} // for non-const CString
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inline Boolean IsEmpty() const
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{
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return fStr[0] <= 0;
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} // for const CString
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// Character selector operator.
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inline unsigned char& operator[](short pos)
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{
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return fStr[pos];
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} // for non-const CString
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inline unsigned char operator[](short pos) const
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{
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return fStr[pos];
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} // for const CString
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//------------------------------------------------------------------------------------
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// CAUTION: There is a subtle difference between the (char*) and (unsigned char*)
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// conversion operators. The first converts a pascal-style string to a c-style
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// string. The second simply converts between two types (CString and Str55) both of
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// which are pascal-style strings.
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// Create a NULL terminated c-style string from a pascal-style CString. Used in
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// debugging to fprintf a CString.
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operator char*() const;
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// Used to create a toolbox type Str255 from our CString. This is simply a type
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// coercion! Both CString and Str255 are expected to be pascal-style strings.
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inline operator unsigned char*()
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{
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return (unsigned char *) this;
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} // for non-const CString
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operator const unsigned char*() const; // for const CString
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//------------------------------------------------------------------------------------
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// Return an ID represented as a CString to the actual ID (a long).
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operator long() const;
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// Relational operators that are inherited by all the derived CString types. Three of
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// each so that literal C Strings can be conveniently used for one of the operators as
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// well as two of the derive classes as operators. These are declared here but defined
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// below all the CString classes because they use constructors for CStr255 and its class
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// definition has not been encountered yet.
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friend inline Boolean operator==(const CString& s1,
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const char* s2);
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friend inline Boolean operator==(const char* s1,
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const CString& s2);
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friend inline Boolean operator==(const CString& s1,
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const CString& s2);
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friend inline Boolean operator!=(const CString& s1,
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const char* s2);
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friend inline Boolean operator!=(const char* s1,
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const CString& s2);
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friend inline Boolean operator!=(const CString& s1,
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const CString& s2);
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friend inline Boolean operator>(const CString& s1,
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const char* s2);
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friend inline Boolean operator>(const char* s1,
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const CString& s2);
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friend inline Boolean operator>(const CString& s1,
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const CString& s2);
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friend inline Boolean operator<(const CString& s1,
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const char* s2);
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friend inline Boolean operator<(const char* s1,
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const CString& s2);
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friend inline Boolean operator<(const CString& s1,
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const CString& s2);
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friend inline Boolean operator>=(const CString& s1,
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const char* s2);
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friend inline Boolean operator>=(const char* s1,
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const CString& s2);
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friend inline Boolean operator>=(const CString& s1,
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const CString& s2);
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friend inline Boolean operator<=(const CString& s1,
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const char* s2);
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friend inline Boolean operator<=(const char* s1,
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const CString& s2);
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friend inline Boolean operator<=(const CString& s1,
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const CString& s2);
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// Concatenation operator that are inherited by all the derived CString types. Three
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// of each so that literal C Strings can be conveniently used for one of the operators
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// as well as using any two classes derived from CString.
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friend CStr255 operator+(const CString& s1,
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const char* s2);
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friend CStr255 operator+(const char* s1,
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const CString& s2);
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friend CStr255 operator+(const CString& s1,
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const CString& s2);
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// Methods that mimic the Pascal builtin CString functions for Pos, Insert and Delete.
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// Note that insert and copy is implemented in the derived classes.
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unsigned char Pos(const char* subStr, unsigned char startPos = 1);
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unsigned char Pos(const CString& subStr, unsigned char startPos = 1);
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void Delete(short pos, short length);
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protected:
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inline long Min(const long a, const long b) const
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{
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return a < b ? a : b;
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}
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};
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//----------------------------------------------------------------------------------------
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// CStr255:
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//----------------------------------------------------------------------------------------
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struct CStr255 : CString
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{
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friend struct CStr63;
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friend struct CStr31;
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private:
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unsigned char fData[kStr255Len - 1];
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public:
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static const CStr255 sEmptyString;
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CStr255();
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CStr255(const CStr255& str);
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CStr255(const CStr63& str);
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CStr255(const CStr32& str);
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CStr255(const CStr31& str);
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CStr255(const unsigned char* str);
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CStr255(const char* str);
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CStr255(const long id);
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// Insert and Copy roughly equivalent to the Pascal Insert and Copy functions.
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void Insert(const CString& str, short pos);
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void Insert(const char* str, short pos);
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CStr255 Copy(short pos, short length);
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// Concatenation operator
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CStr255& operator +=(const CString& str);
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CStr255& operator +=(const char* str);
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CStr255& operator +=(const char ch);
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// Assignment operator
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CStr255& operator =(const CStr255& str);
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CStr255& operator =(const CStr63& str);
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CStr255& operator =(const CStr32& str);
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CStr255& operator =(const CStr31& str);
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CStr255& operator =(const unsigned char* str);
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CStr255& operator =(const char aChar);
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CStr255& operator =(const char* str);
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};
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//----------------------------------------------------------------------------------------
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// CStr63:
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//----------------------------------------------------------------------------------------
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struct CStr63 : CString
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{
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friend struct CStr255;
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friend struct CStr31;
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private:
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unsigned char fData[kStr63Len - 1];
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public:
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CStr63();
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CStr63(const CStr255& str);
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CStr63(const CStr63& str);
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CStr63(const CStr32& str);
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CStr63(const CStr31& str);
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CStr63(const unsigned char* str);
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CStr63(const char* str);
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CStr63(const long id);
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// Insert and Copy roughly equivalent to the Pascal Insert and Copy functions.
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void Insert(const CString& str, short pos);
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void Insert(const char* str, short pos);
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CStr63 Copy(short pos, short length);
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// Concatenation operator
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CStr63& operator +=(const CString& str);
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CStr63& operator +=(const char* str);
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CStr63& operator +=(const char ch);
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};
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//----------------------------------------------------------------------------------------
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// CStr32:
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//----------------------------------------------------------------------------------------
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struct CStr32 : CString
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{
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friend struct CStr255;
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friend struct CStr63;
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private:
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unsigned char fData[kStr32Len - 1];
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public:
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CStr32();
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inline CStr32(unsigned char length)
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{
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fStr[0] = length;
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}
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CStr32(const CStr255& str);
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CStr32(const CStr63& str);
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CStr32(const CStr32& str);
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CStr32(const CStr31& str);
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CStr32(const unsigned char* str);
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CStr32(const char* str);
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CStr32(const long id);
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// Insert and Copy roughly equivalent to the Pascal Insert and Copy functions.
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void Insert(const CString& str, short pos);
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void Insert(const char* str, short pos);
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CStr32 Copy(short pos, short length);
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// Concatenation operator
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CStr32& operator +=(const CString& str);
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CStr32& operator +=(const char* str);
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CStr32& operator +=(const char ch);
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};
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//----------------------------------------------------------------------------------------
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// CStr31:
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//----------------------------------------------------------------------------------------
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struct CStr31 : CString
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{
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friend struct CStr255;
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friend struct CStr63;
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friend struct CStr32;
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private:
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unsigned char fData[kStr31Len - 1];
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public:
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CStr31();
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inline CStr31(unsigned char length)
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{
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fStr[0] = length;
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}
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CStr31(const CStr255& str);
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CStr31(const CStr63& str);
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CStr31(const CStr32& str);
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CStr31(const CStr31& str);
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CStr31(const unsigned char* str);
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CStr31(const char* str);
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CStr31(const long id);
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void operator =(const CString& str);
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void operator =(const unsigned char* str);
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void operator =(const char* str);
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// Insert and Copy roughly equivalent to the Pascal Insert and Copy functions.
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void Insert(const CString& str, short pos);
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void Insert(const char* str, short pos);
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CStr31 Copy(short pos, short length);
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// Concatenation operator
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CStr31& operator +=(const CString& str);
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CStr31& operator +=(const char* str);
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CStr31& operator +=(const char ch);
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};
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//----------------------------------------------------------------------------------------
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// CStr255 inline function definitions
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//----------------------------------------------------------------------------------------
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inline CStr255::CStr255()
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{
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fStr[0] = 0;
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}
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inline CStr255::CStr255(const CStr255& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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}
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inline CStr255::CStr255(const CStr63& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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}
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inline CStr255::CStr255(const CStr32& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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}
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inline CStr255::CStr255(const CStr31& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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}
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inline CStr255::CStr255(const unsigned char* str)
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{
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MABlockMove(str, fStr, str[0] + kLengthByte);
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}
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inline CStr255& CStr255::operator = (const CStr255& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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return *this;
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}
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inline CStr255& CStr255::operator = (const CStr63& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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return *this;
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}
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inline CStr255& CStr255::operator = (const CStr32& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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return *this;
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}
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inline CStr255& CStr255::operator = (const CStr31& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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return *this;
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}
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inline CStr255& CStr255::operator = (const unsigned char* str)
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{
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MABlockMove(str, fStr, str[0] + kLengthByte);
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return *this;
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}
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inline CStr255& CStr255::operator = (const char aChar)
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{
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Length() = (aChar) ? 1 : 0;
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fStr[1] = aChar;
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return *this;
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}
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inline void CStr255::Insert(const CString& str, short pos)
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{
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this->InsertHelper(str, pos, kStr255Len);
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}
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inline void CStr255::Insert(const char* str, short pos)
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{
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this->InsertHelper(str, pos, kStr255Len);
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}
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//----------------------------------------------------------------------------------------
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// CStr63 inline function definitions
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//----------------------------------------------------------------------------------------
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inline CStr63::CStr63()
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{
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fStr[0] = 0;
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}
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inline CStr63::CStr63(const CStr255& str)
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{
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// Truncate the CStr255 to 63 bytes if necessary.
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Length() = str.Length() > kStr63Len ? kStr63Len : str.Length();
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MABlockMove(&str.fStr[1], &fStr[1], Length());
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}
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inline CStr63::CStr63(const CStr63& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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}
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inline CStr63::CStr63(const CStr32& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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}
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inline CStr63::CStr63(const CStr31& str)
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{
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MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
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}
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inline CStr63::CStr63(const unsigned char* str)
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{
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MABlockMove(str, fStr, Min(str[0] + kLengthByte, sizeof(CStr63)));
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}
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inline void CStr63::Insert(const CString& str, short pos)
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{
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this->InsertHelper(str, pos, kStr63Len);
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}
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inline void CStr63::Insert(const char* str, short pos)
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{
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this->InsertHelper(str, pos, kStr63Len);
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}
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//----------------------------------------------------------------------------------------
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// CStr32 inline function definitions
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//----------------------------------------------------------------------------------------
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inline CStr32::CStr32()
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{
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fStr[0] = 0;
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}
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inline CStr32::CStr32(const CStr255& str)
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{
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// Truncate the CStr255 to 32 bytes if necessary.
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Length() = str.Length() > kStr32Len ? kStr32Len : str.Length();
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MABlockMove(&str.fStr[1], &fStr[1], Length());
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}
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inline CStr32::CStr32(const CStr63& str)
|
|
{
|
|
// Truncate the CStr63 to 32 bytes if necessary.
|
|
|
|
Length() = str.Length() > kStr32Len ? kStr32Len : str.Length();
|
|
MABlockMove(&str.fStr[1], &fStr[1], Length());
|
|
}
|
|
|
|
inline CStr32::CStr32(const CStr32& str)
|
|
{
|
|
MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
|
|
}
|
|
|
|
inline CStr32::CStr32(const CStr31& str)
|
|
{
|
|
MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
|
|
}
|
|
|
|
inline CStr32::CStr32(const unsigned char* str)
|
|
{
|
|
MABlockMove(str, fStr, Min(str[0] + kLengthByte, sizeof(CStr32)));
|
|
}
|
|
|
|
inline void CStr32::Insert(const CString& str, short pos)
|
|
{
|
|
this->InsertHelper(str, pos, kStr32Len);
|
|
}
|
|
|
|
inline void CStr32::Insert(const char* str, short pos)
|
|
{
|
|
this->InsertHelper(str, pos, kStr32Len);
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
// CStr31 inline function definitions
|
|
//----------------------------------------------------------------------------------------
|
|
|
|
inline CStr31::CStr31()
|
|
{
|
|
fStr[0] = 0;
|
|
}
|
|
|
|
inline CStr31::CStr31(const CStr255& str)
|
|
{
|
|
// Truncate the CStr255 to 31 bytes if necessary.
|
|
|
|
Length() = str.Length() > kStr31Len ? kStr31Len : str.Length();
|
|
MABlockMove(&str.fStr[1], &fStr[1], Length());
|
|
}
|
|
|
|
inline CStr31::CStr31(const CStr63& str)
|
|
{
|
|
// Truncate the CStr63 to 31 bytes if necessary.
|
|
|
|
Length() = str.Length() > kStr31Len ? kStr31Len : str.Length();
|
|
MABlockMove(&str.fStr[1], &fStr[1], Length());
|
|
}
|
|
|
|
inline CStr31::CStr31(const CStr32& str)
|
|
{
|
|
// Truncate the CStr32 to 31 bytes if necessary.
|
|
|
|
Length() = str.Length() > kStr31Len ? kStr31Len : str.Length();
|
|
MABlockMove(&str.fStr[1], &fStr[1], Length());
|
|
}
|
|
|
|
inline CStr31::CStr31(const CStr31& str)
|
|
{
|
|
MABlockMove(str.fStr, fStr, str.Length() + kLengthByte);
|
|
}
|
|
|
|
inline CStr31::CStr31(const unsigned char* str)
|
|
{
|
|
MABlockMove(str, fStr, Min(str[0] + kLengthByte, sizeof(CStr31)));
|
|
}
|
|
|
|
inline void CStr31::Insert(const CString& str, short pos)
|
|
{
|
|
this->InsertHelper(str, pos, kStr31Len);
|
|
}
|
|
|
|
inline void CStr31::Insert(const char* str, short pos)
|
|
{
|
|
this->InsertHelper(str, pos, kStr31Len);
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
// Inline friend function definitions for relational string operators.
|
|
//----------------------------------------------------------------------------------------
|
|
|
|
inline Boolean operator==(const CString& s1, const char* s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, CStr255(s2), false, true) == 0;
|
|
}
|
|
|
|
inline Boolean operator==(const char* s1, const CString& s2)
|
|
{
|
|
return ::RelString(CStr255(s1), (ConstStr255Param)&s2, false, true) == 0;
|
|
}
|
|
|
|
inline Boolean operator==(const CString& s1, const CString& s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, (ConstStr255Param)&s2, false, true) == 0;
|
|
}
|
|
|
|
inline Boolean operator!=(const CString& s1, const char* s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, CStr255(s2), false, true) != 0;
|
|
}
|
|
|
|
inline Boolean operator!=(const char* s1, const CString& s2)
|
|
{
|
|
return ::RelString(CStr255(s1), (ConstStr255Param)&s2, false, true) != 0;
|
|
}
|
|
|
|
inline Boolean operator!=(const CString& s1, const CString& s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, (ConstStr255Param)&s2, false, true) != 0;
|
|
}
|
|
|
|
inline Boolean operator>(const CString& s1, const char* s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, CStr255(s2), false, true) > 0;
|
|
}
|
|
|
|
inline Boolean operator>(const char* s1, const CString& s2)
|
|
{
|
|
return ::RelString(CStr255(s1), (ConstStr255Param)&s2, false, true) > 0;
|
|
}
|
|
|
|
inline Boolean operator>(const CString& s1, const CString& s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, (ConstStr255Param)&s2, false, true) > 0;
|
|
}
|
|
|
|
inline Boolean operator<(const CString& s1, const char* s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, CStr255(s2), false, true) < 0;
|
|
}
|
|
|
|
inline Boolean operator<(const char* s1, const CString& s2)
|
|
{
|
|
return ::RelString(CStr255(s1), (ConstStr255Param)&s2, false, true) < 0;
|
|
}
|
|
|
|
inline Boolean operator<(const CString& s1, const CString& s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, (ConstStr255Param)&s2, false, true) < 0;
|
|
}
|
|
|
|
inline Boolean operator>=(const CString& s1, const char* s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, CStr255(s2), false, true) >= 0;
|
|
}
|
|
|
|
inline Boolean operator>=(const char* s1, const CString& s2)
|
|
{
|
|
return ::RelString(CStr255(s1), (ConstStr255Param)&s2, false, true) >= 0;
|
|
}
|
|
|
|
inline Boolean operator>=(const CString& s1, const CString& s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, (ConstStr255Param)&s2, false, true) >= 0;
|
|
}
|
|
|
|
inline Boolean operator<=(const CString& s1, const char* s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, CStr255(s2), false, true) <= 0;
|
|
}
|
|
|
|
inline Boolean operator<=(const char* s1, const CString& s2)
|
|
{
|
|
return ::RelString(CStr255(s1), (ConstStr255Param)&s2, false, true) <= 0;
|
|
}
|
|
|
|
inline Boolean operator<=(const CString& s1, const CString& s2)
|
|
{
|
|
return ::RelString((ConstStr255Param)&s1, (ConstStr255Param)&s2, false, true) <= 0;
|
|
}
|
|
|
|
#endif
|