SWVersion Class Reference

#include <swversion.h>

Collaboration diagram for SWVersion:

Public Member Functions
int	compare (const SWVersion &vi) const
const char *	getText () const
	operator const char * () const
bool	operator< (const SWVersion &vi) const
bool	operator<= (const SWVersion &vi) const
bool	operator== (const SWVersion &vi) const
bool	operator> (const SWVersion &vi) const
bool	operator>= (const SWVersion &vi) const
	SWVersion (const char *version="0.0")
Public Attributes
int	major
int	minor
int	minor2
int	minor3
Static Public Attributes
static SWVersion	currentVersion

Detailed Description

A basic tool class to handle program version numbers.

Definition at line 30 of file swversion.h.

Constructor & Destructor Documentation

SWVersion::SWVersion ( const char * version = "0.0" )

The constructor.

Parameters:

version

Version string to be parsed.

Definition at line 35 of file swversion.cpp.

00035                                         {
00036     char *buf = new char[ strlen(version) + 1 ];
00037     char *tok;
00038     major = minor = minor2 = minor3 = -1;
00039         
00040     strcpy(buf, version);
00041     tok = strtok(buf, ".");
00042     if (tok)
00043         major = atoi(tok);
00044     tok = strtok(0, ".");
00045     if (tok)
00046         minor = atoi(tok);
00047     tok = strtok(0, ".");
00048     if (tok)
00049         minor2 = atoi(tok);
00050     tok = strtok(0, ".");
00051     if (tok)
00052         minor3 = atoi(tok);
00053     delete [] buf;
00054 }

Member Function Documentation

int SWVersion::compare ( const SWVersion & vi ) const

Compare 2 Versions with each other.

Parameters:

vi

Version number to compare with.

Returns:: >0:this>vi; 0:this==vi; <0:this<vi

Definition at line 67 of file swversion.cpp.

00067                                                 {
00068     if (major == vi.major)
00069         if (minor == vi.minor)
00070             if (minor2 == vi.minor2)
00071                 if (minor3 == vi.minor3)
00072                     return 0;
00073                 else return minor3 - vi.minor3;
00074             else    return minor2 - vi.minor2;
00075         else    return minor - vi.minor;
00076     else    return major - vi.major;
00077 }

const char * SWVersion::getText ( ) const

Returns:: The parsed version number text.

Definition at line 80 of file swversion.cpp.

00080                                      {
00081 
00082     // 255 is safe because there is no way 4 integers (plus 3 '.'s) can have
00083     // a string representation that will overrun this buffer
00084     static char buf[255];
00085 
00086     if (minor > -1) {
00087         if (minor2 > -1) {
00088             if (minor3 > -1) {
00089                 sprintf(buf, "%d.%d.%d.%d", major, minor, minor2, minor3);
00090             }
00091             else    sprintf(buf, "%d.%d.%d", major, minor, minor2);
00092         }
00093         else    sprintf(buf, "%d.%d", major, minor);
00094     }
00095     else    sprintf(buf, "%d", major);
00096 
00097     return buf;
00098 }