HP 3000 Manuals HP 3000 Manuals
The File Conversion Process Once you have supplied convert5 with the necessary parameters (see Chapter 16 for details) it reads the specified source program, and searches for certain key-words. It then extracts the necessary information from the entries associated with these key-words. The File-Control paragraph is the first entry for which convert5 searches. This entry must be located within your main source file, and it must start in margin A. Once convert5 has found this entry, it looks for the SELECT ... ASSIGN statement relating to the file or record which you wish to convert to Micro Focus COBOL format. This statement can be within the main source file, or within a copy file. Having read and extracted the relevant information from the File-Control entry and the SELECT ... ASSIGN statement, convert5 searches for the following key-words: FD, WORKING-STORAGE, LINKAGE and PROCEDURE. These words, together with their associated entries, can be contained either within the DG Interactive COBOL source file, or within a copy file. convert5 extracts the relevant information from all of the above statements, which enables it to create a file conversion program. This file conversion program is capable of loading a file in standard Micro Focus format which has the same organization as that quoted in the SELECT ... ASSIGN statement in the original DG Interactive COBOL source file. If the description of the DG Interactive COBOL data-file does not match its actual format, when you attempt to run the file conversion program it will report an appropriate error message and abort the current file conversion. In this situation you must provide a source file description that convert5 is able to process.