bversion.cpp

これは C++ で書かれたバージョン API の使用例です。

#include <stdio.h>
 
#include "btrieveCpp.h"
 
static Btrieve::StatusCode
loginDatabaseURI(const char *databaseURI, BtrieveClient *btrieveClient)
{
   Btrieve::StatusCode status;
 
   // If Login() fails.
   if ((status = btrieveClient->Login(databaseURI)) != Btrieve::STATUS_CODE_NO_ERROR)
   {
      printf("Error: BtrieveClient::Login():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
leave:
   return status;
}
 
static Btrieve::StatusCode
logoutDatabaseURI(const char *databaseURI, BtrieveClient *btrieveClient)
{
   Btrieve::StatusCode status;
 
   // If Logout() fails.
   if ((status = btrieveClient->Logout(databaseURI)) != Btrieve::STATUS_CODE_NO_ERROR)
   {
      printf("Error: BtrieveClient::Logout():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
leave:
   return status;
}
 
static Btrieve::StatusCode
printVersion(BtrieveClient *btrieveClient)
{
   Btrieve::StatusCode status;
   BtrieveVersion btrieveVersion;
   Btrieve::VersionType btrieveVersionType;
   int i;
 
   // If GetVersion() fails.
   if ((status = btrieveClient->GetVersion(&btrieveVersion)) != Btrieve::STATUS_CODE_NO_ERROR)
   {
      printf("Error: BtrieveClient::GetVersion():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   // If GetClientRevisionNumber() fails.
   if ((i = btrieveVersion.GetClientRevisionNumber()) < 0)
   {
      status = btrieveVersion.GetLastStatusCode();
      printf("Error: BtrieveVersion::GetClientRevisionNumber():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   printf("ClientRevisionNumber = %d\n", i);
 
   // If GetClientVersionNumber() fails.
   if ((i = btrieveVersion.GetClientVersionNumber()) < 0)
   {
      status = btrieveVersion.GetLastStatusCode();
      printf("Error: BtrieveVersion::GetClientVersionNumber():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   printf("ClientVersionNumber = %d\n", i);
 
   // If GetClientVersionType() fails.
   if ((btrieveVersionType = btrieveVersion.GetClientVersionType()) == Btrieve::VERSION_TYPE_UNKNOWN)
   {
      status = btrieveVersion.GetLastStatusCode();
      printf("Error: BtrieveVersion::GetClientVersionType():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   printf("ClientVersionType = %s\n", Btrieve::VersionTypeToString(btrieveVersionType));
 
   // If GetLocalRevisionNumber() fails.
   if ((i = btrieveVersion.GetLocalRevisionNumber()) < 0)
   {
      status = btrieveVersion.GetLastStatusCode();
      printf("Error: BtrieveVersion::GetLocalRevisionNumber():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   printf("LocalRevisionNumber = %d\n", i);
 
   // If GetLocalVersionNumber() fails.
   if ((i = btrieveVersion.GetLocalVersionNumber()) < 0)
   {
      status = btrieveVersion.GetLastStatusCode();
      printf("Error: BtrieveVersion::GetLocalVersionNumber():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   printf("LocalVersionNumber = %d\n", i);
 
   // If GetLocalVersionType() fails.
   if ((btrieveVersionType = btrieveVersion.GetLocalVersionType()) == Btrieve::VERSION_TYPE_UNKNOWN)
   {
      status = btrieveVersion.GetLastStatusCode();
      printf("Error: BtrieveVersion::GetLocalVersionType():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   printf("LocalVersionType = %s\n", Btrieve::VersionTypeToString(btrieveVersionType));
 
   // If GetRemoteRevisionNumber() fails.
   if ((i = btrieveVersion.GetRemoteRevisionNumber()) < 0)
   {
      status = btrieveVersion.GetLastStatusCode();
      printf("Error: BtrieveVersion::GetRemoteRevisionNumber():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   printf("RemoteRevisionNumber = %d\n", i);
 
   // If GetRemoteVersionNumber() fails.
   if ((i = btrieveVersion.GetRemoteVersionNumber()) < 0)
   {
      status = btrieveVersion.GetLastStatusCode();
      printf("Error: BtrieveVersion::GetRemoteVersionNumber():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   printf("RemoteVersionNumber = %d\n", i);
 
   // If GetRemoteVersionType() fails.
   if ((btrieveVersionType = btrieveVersion.GetRemoteVersionType()) == Btrieve::VERSION_TYPE_UNKNOWN)
   {
      status = btrieveVersion.GetLastStatusCode();
      printf("Error: BtrieveVersion::GetRemoteVersionType():%d:%s.\n", status, Btrieve::StatusCodeToString(status));
      goto leave;
   }
 
   printf("RemoteVersionType = %s\n", Btrieve::VersionTypeToString(btrieveVersionType));
 
leave:
   return status;
}
 
int
main(int argc, char *argv[])
{
   static const char *usage = "Usage: %s databaseURI\n";
 
   BtrieveClient btrieveClient;
   Btrieve::StatusCode status = Btrieve::STATUS_CODE_UNKNOWN;
   char *databaseURI;
 
   // If the incorrect number of arguments were given.
   if (argc != 2)
   {
      printf(usage, argv[0]);
      goto leave;
   }
 
   databaseURI = argv[1];
 
   // If loginDatabaseURI() fails.
   if ((status = loginDatabaseURI(databaseURI, &btrieveClient)) != Btrieve::STATUS_CODE_NO_ERROR)
   {
      goto leave;
   }
 
   // If printVersion() fails.
   if ((status = printVersion(&btrieveClient)) != Btrieve::STATUS_CODE_NO_ERROR)
   {
      goto leave;
   }
 
   // If logoutDatabaseURI() fails.
   if ((status = logoutDatabaseURI(databaseURI, &btrieveClient)) != Btrieve::STATUS_CODE_NO_ERROR)
   {
      goto leave;
   }
 
leave:
   // If there wasn't a failure.
   if (status == Btrieve::STATUS_CODE_NO_ERROR)
      return 0;
 
   return 1;
}