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Downloaded from: http://www.mike95.com Copyright (c)1997 Michael Olivero All Rights Reserved ********************************************/ #include "JString.h" #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <stdarg.h> //============ //Constructors //============ JString::JString( const char *Value ) { if ( Value == NULL ) Value = ""; GetBuffer( Length = strlen( Value ) ); strcpy( Buffer, Value ); } JString::JString( const JString &Value ) { GetBuffer( Length = Value.Length ); strcpy( Buffer, Value.Buffer ); } char JString::charAt( UINT loc ) const { return operator[]( loc ); } int JString::compareTo( const JString &s2 ) const { return strcmp( Buffer, s2.Buffer ); } const JString & JString::concat( const JString &s2 ) { return (*this) += s2; } const JString & JString::operator=( const JString &Rhs ) { if ( this == &Rhs ) return *this; if ( Rhs.Length > Length ) { delete [] Buffer; GetBuffer( Rhs.Length ); } Length = Rhs.Length; strcpy( Buffer, Rhs.Buffer ); return *this; } const JString & JString::operator+=( const char aChar ) { if ( Length == BufferLen ) Double(); Buffer[ Length++ ] = aChar; Buffer[ Length ] = '\0'; return *this; } const JString & JString::operator+=( const JString &other ) { Length += other.Length; if ( Length > BufferLen ) { char *temp = Buffer; GetBuffer( Length ); strcpy( Buffer, temp ); delete [] temp; } strcat( Buffer, other.Buffer ); return *this; } int JString::operator==( const JString &Rhs ) const { return ( Length == Rhs.Length && strcmp( Buffer, Rhs.Buffer ) == 0 ); } int JString::operator!=( const JString &Rhs ) const { return ( Length != Rhs.length() || strcmp( Buffer, Rhs.cstr() ) != 0 ); } int JString::operator<( const JString &Rhs ) const { return strcmp( Buffer, Rhs.Buffer ) < 0; } int JString::operator>( const JString &Rhs ) const { return strcmp( Buffer, Rhs.Buffer ) > 0; } int JString::operator<=( const JString &Rhs ) const { return strcmp( Buffer, Rhs.Buffer ) <= 0; } int JString::operator>=( const JString & Rhs ) const { return strcmp( Buffer, Rhs.Buffer ) >= 0; } char & JString::operator[]( UINT Index ) { verifyIndex( Index ); return Buffer[ Index ]; } char JString::operator[]( UINT Index ) const { verifyIndex( Index ); return Buffer[ Index ]; } int JString::endsWith( const JString &s2 ) const { if ( Length < s2.Length ) return 0; return strcmp( &Buffer[ Length - s2.Length], s2.cstr() ) == 0; } int JString::equals( const JString &s2 ) const { return ( Length == s2.Length && strcmp( Buffer,s2.Buffer ) == 0 ); } int JString::equalsIgnoreCase( const JString &s2 ) const { if ( this == &s2 ) return 1; else if ( Length != s2.Length ) return 0; return strcmp(toLowerCase().cstr(), s2.toLowerCase().cstr()) == 0; } void JString::Format( const char* fmt, ... ) { va_list iterator; va_start( iterator, fmt ); va_end( iterator ); } void JString::replace( char findChar, char replaceChar ) { char* temp = strchr( Buffer, findChar ); if ( temp != NULL ) *temp = replaceChar; } void JString::replace( const JString& match, const JString& replace ) { JString temp = Buffer, newString; int loc; while ( (loc = temp.indexOf( match )) != -1 ) { newString += temp.substring( 0, loc ); newString += replace; temp = temp.substring( loc + match.Length ); } newString += temp; //get rest of string; *this = newString; } int JString::indexOf( char temp ) const { return indexOf( temp, 0 ); } int JString::indexOf( char ch, UINT fromIndex ) const { if ( fromIndex >= Length ) return -1; const char* temp = strchr( &Buffer[fromIndex], ch ); if ( temp == NULL ) return -1; return temp - Buffer; } int JString::indexOf( const JString &s2 ) const { return indexOf( s2, 0 ); } int JString::indexOf( const JString &s2, UINT fromIndex ) const { if ( fromIndex >= Length ) return -1; const char *theFind = strstr( &Buffer[ fromIndex ], s2.cstr() ); if ( theFind == NULL ) return -1; return theFind - Buffer; //pointer substraction } int JString::lastIndexOf( char theChar ) const { return lastIndexOf( theChar, Length - 1 ); } int JString::lastIndexOf( char ch, UINT fromIndex ) const { if ( fromIndex >= Length ) return -1; char tempchar = Buffer[fromIndex + 1]; Buffer[fromIndex + 1] = '\0'; char* temp = strrchr( Buffer, ch ); Buffer[fromIndex + 1] = tempchar; if ( temp == NULL ) return -1; return temp - Buffer; } int JString::lastIndexOf( const JString &s2 ) const { return lastIndexOf( s2, Length - s2.Length ); } int JString::lastIndexOf( const JString &s2, UINT fromIndex ) const { //============================= //avoid check for empty strings //============================= if ( s2.Length == 0 || s2.Length - 1 > fromIndex || fromIndex >= Length ) return -1; //======================== //matching first character //======================== char temp = s2[ 0 ]; for ( int i = fromIndex; i >= 0; i-- ) { if ( Buffer[ i ] == temp && (*this).substring( i, i + s2.Length ).equals( s2 ) ) return i; } return -1; } int JString::startsWith( const JString &s2 ) const { if ( Length < s2.Length ) return 0; return startsWith( s2, 0 ); } int JString::startsWith( const JString &s2, UINT offset ) const { if ( offset > Length - s2.Length ) return 0; return strncmp( &Buffer[offset], s2.cstr(), s2.Length ) == 0; } JString JString::substring( UINT left ) const { return substring( left, Length ); } JString JString::substring( UINT left, UINT right ) const { if ( left > right ) { int temp = right; right = left; left = temp; } if ( right > Length ) { cerr << "Index Out Of Bounds Exception w/ substring(" << left << "," << right << "]:\n" << Buffer << endl; exit(1); } char temp = Buffer[ right ]; //save the replaced character Buffer[ right ] = '\0'; //nullify the the character JString outPut = ( Buffer + left ); //Pointer arithmetic Buffer[ right ] = temp; //restore character return outPut; } JString JString::toLowerCase( ) const { JString temp = Buffer; for ( UINT i = 0; i < Length; i++ ) temp.Buffer[ i ] = tolower( temp.Buffer[ i ] ); return temp; } JString JString::toUpperCase() const { JString temp = Buffer; for ( UINT i = 0; i < Length; i++ ) temp.Buffer[ i ] = toupper( temp.Buffer[ i ] ); return temp; } JString JString::trim() const { JString temp = Buffer; UINT i,j; for ( i = 0; i < Length; i++ ) { if ( !isspace(Buffer[i]) ) break; } for ( j = temp.Length - 1; j > i; j-- ) { if ( !isspace(Buffer[j]) ) break; } return temp.substring( i, j + 1); } istream & operator >> ( istream &In, JString &Value ) { static char Str[ 2048 ]; // allocate max size of 2048 characters In >> Str; Value = Str; // assign to reference JString return In; // Return istream } ostream & operator << ( ostream &Out, const JString &Value ) { Out << Value.Buffer; return Out; }
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