Product Version Comparision

[Iceman2005]

Guys, is there an already good product version comparsion function i can use? Or do i need to write one? if so, how should i do it?

I would like to determine if a product version is <, >, ==, >=, <= to another version...

Like how would i write a function that compares and determine if ver1 >= ver2 where i need to consider cases where version could be.....

2.3.0
2.0.0.5
8.0034.234.4
0.56
2007.0046.234.12345.76
7

and i need to compare them?

 

[cpjust]

I don't know of any, but you might be able to find something on Google.
Otherwise, you'll have to do some string parsing, and it would probably be a good idea to create a ProductVersion class that you can use to overload the comparison operators.

 

[ArkM]

Try this improvisation:

/// Place this declaration in header file (filever.h)
class FileVer
{
public:
  enum Info { Product, File };

  FileVer():dfd(false) {}
  FileVer(unsigned x, unsigned y = 0, unsigned z = 0, unsigned t = 0);
  bool isOK() const { return dfd; }
  operator bool() const { return dfd; }

  bool operator < (const FileVer& v) const 
  { 
    return (isOK() && v.isOK()) && (ms < v.ms || ms == v.ms && ls < v.ls);
  }
  bool operator >=(const FileVer& v) const 
  { 
    return (isOK() && v.isOK()) && (ms > v.ms || ms == v.ms && ls >= v.ls);
  }
  bool operator ==(const FileVer& v) const
  {
  return (isOK() && v.isOK()) && ms == v.ms && ls == v.ls;
  }
  bool operator !=(const FileVer& v) const { return !(*this == v); }
  bool operator > (const FileVer& v) const
  {
    return (isOK() && v.isOK()) && (ms > v.ms || ms == v.ms && ls > v.ls);
  }
  bool operator <=(const FileVer& v) const 
  {
    return (isOK() && v.isOK()) && (ms < v.ms || ms == v.ms && ls <= v.ls);
  }
  bool getVer(const char* fname, Info t = File);
  bool getVer(const std::string& fname, Info t) 
  { 
    return getVer(fname.c_str(),t); 
  }

  std::string toStr() const;
private:
  unsigned ms;
  unsigned ls;
  bool	dfd;
};

inline std::ostream& operator << (std::ostream& os, const FileVer& v)
{
  os << v.toStr();
  return os;
}

// Place the text below in the implementation cpp file.
// Don't forget to compile with
// #include <windows.h>
// #include <string>
// #include <ostream>
// #include "filever.h"

FileVer::FileVer(unsigned x, unsigned y, unsigned z, unsigned t):
ms((x<<16)|(y&0xFFFFu)), ls((z<<16)|(t&0xFFFFu)),dfd(true)
{
}

bool FileVer::getVer(const char* fname, FileVer::Info t)
{
  dfd = false;
  DWORD junk, insz;
  insz = GetFileVersionInfoSize((char*)fname,&junk);

  if (insz)
  {
    char* p = new char[insz];
    if (GetFileVersionInfo((char*)fname,0,insz,p))
    {
      void* ptr = 0;
      unsigned len = 0;
      if (VerQueryValue(p,"\\",&ptr,&len) && ptr && len)
      {
        VS_FIXEDFILEINFO* q = (VS_FIXEDFILEINFO*)ptr;
        if (t == FileVer::Info::File)
        {
          ms = q->dwFileVersionMS;
          ls = q->dwFileVersionLS;
        }
        else
        {
          ms = q->dwProductVersionMS;
          ls = q->dwProductVersionLS;
        }
        dfd = true;
      }
    }
    delete [] p;
  }
  return isOK();
}

std::string FileVer::toStr() const
{
  if (!isOK())
     return "?.?.?.?";
  else
  {
    char v[32];
    sprintf(v,"%u.%u.%u.%u",
            ms>>16,ms&0xFFFFu,ls>>16,ls&0xFFFFu);
    return v;
  }
}

Add version.lib system library in your project settings Link tab.