From daf17154bf13139d9375f48525d19d6aaba08155 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Sat, 2 Aug 2014 08:43:31 +0200 Subject: Imported Upstream version 3.1.2 --- html/Xb2cpp.htm | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100755 html/Xb2cpp.htm (limited to 'html/Xb2cpp.htm') diff --git a/html/Xb2cpp.htm b/html/Xb2cpp.htm new file mode 100755 index 0000000..aa9d532 --- /dev/null +++ b/html/Xb2cpp.htm @@ -0,0 +1,81 @@ + + +Xbase to Xbase DBMS C++ Converter + + + +

Xbase to Xbase DBMS C++ Converter

+ +

Program Xb2cpp.pl V0.1 26-11-98
+

Author

+Hubertus Kehl, kehl@informatik.tu-muenchen.de, kehlh@hotmail.com +
Please send suggestions, bug reports, patches, etc. one of these email +adresses. +

Language

Perl 5.0

Purpose

Convert Dbase, Clipper, FOXPRO Source Code to XBASE C++ Code for use with +XBASE DBMS Library

Output

.cpp File and .h File

Arguments

1st arg = filename

Remarks

The script tries to keep track of the databases used in different workareas. +But the flow through your program cannot be determined, so in some cases +you have to help the script a bit by giving additional info.

Three special comments have been designed to add this info:

* XB2CPP(SelectedArea)
+or  * XB2CPP(SelectedArea,Workarea1,Alias1,Wa2,Al2...)
+or  * XB2CPP(SelA,WA1,Al1[Total1, Active1],Wa2, Al2[Tot2,Act2])

e.g. * XB2CPP(3,3,ZP,2,PL) will inform the script for example at the beginning +of a PROCEDURE that a database with Alias ZP is opened in workarea 3 and +a database with alias PL is opened in workarea2 and when calling this procedure +always workarea 3 is selected.

The third alternative of this statement makes it possible to define +the number of open indices and which one is the active index, as given +by a previous SET INDEX TO or USE and SET ORDER TO statements. The script +cannot know, which procedures, statements have been executed before and +opened indices.... So * XB2CPP(2,2,ZP[2,1]) will inform the script about +an open database alias ZP in workarea 2 which is currently selected and +has two open indices where the first one is the active one.

Hints

+ +

Always give an ALIAS in USE-Statements this is needed for generation +of the Database Classnames
Give the above described additional infos where necessary.
Use ALIASes in Expressions with database fields, this helps the script +in knowing where database references are.
Replace the XXX in PutXXXField or GetXXXField manually the script is +not able to determine variable or field types. The code for getting a Textfield +(GetField) must also be corrected. Xbase DBMS Syntax requires the buffer +as second parameter, the string will not be returned ! You may use a C++ +String wrapper for this job.
PROCEDURES that will operate on two different databases where some statements +are used for both cannot be converted The script needs to know everytime +on which database the statements are operating. Either duplicate such procedures, +(one for each database), or write a generic C++ routine with pointers to +databases.
Don't assume any compilable or even working C++ source code as output. +The ambigous DBASE language, which lacks type and variable definitions +is one reason for this. This script only will help you for about 10-30% +of the conversion. The rest (which remained uppercase) has to be done manually +:)

+ +

Copyright

This program is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the Free +Software Foundation (version 2 of the License)

+ +

This program is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details.

+Hubertus Kehl,29-11-1998 +

+ + -- cgit v1.2.3