Xml in COBOL

Here’s the translation of the XML processing example from Go to COBOL, formatted in Markdown suitable for Hugo:

       IDENTIFICATION DIVISION.
       PROGRAM-ID. XML-PROCESSING.
       ENVIRONMENT DIVISION.
       INPUT-OUTPUT SECTION.
       FILE-CONTROL.
           SELECT XML-FILE ASSIGN TO "plant.xml"
               ORGANIZATION IS LINE SEQUENTIAL.
       DATA DIVISION.
       FILE SECTION.
       FD XML-FILE.
       01 XML-RECORD PIC X(1000).
       WORKING-STORAGE SECTION.
       01 WS-EOF PIC A(1).
       01 WS-PLANT.
           05 WS-ID PIC 9(5).
           05 WS-NAME PIC X(50).
           05 WS-ORIGIN OCCURS 2 TIMES PIC X(50).

       PROCEDURE DIVISION.
       MAIN-PROCEDURE.
           PERFORM CREATE-XML
           PERFORM READ-XML
           STOP RUN.

       CREATE-XML.
           OPEN OUTPUT XML-FILE
           MOVE "<?xml version=""1.0"" encoding=""UTF-8""?>" 
               TO XML-RECORD
           WRITE XML-RECORD
           MOVE "<plant id=""27"">" TO XML-RECORD
           WRITE XML-RECORD
           MOVE "  <name>Coffee</name>" TO XML-RECORD
           WRITE XML-RECORD
           MOVE "  <origin>Ethiopia</origin>" TO XML-RECORD
           WRITE XML-RECORD
           MOVE "  <origin>Brazil</origin>" TO XML-RECORD
           WRITE XML-RECORD
           MOVE "</plant>" TO XML-RECORD
           WRITE XML-RECORD
           CLOSE XML-FILE.

       READ-XML.
           OPEN INPUT XML-FILE
           PERFORM UNTIL WS-EOF = 'Y'
               READ XML-FILE
                   AT END
                       MOVE 'Y' TO WS-EOF
                   NOT AT END
                       DISPLAY XML-RECORD
               END-READ
           END-PERFORM
           CLOSE XML-FILE.

This COBOL program demonstrates basic XML processing, similar to the original example. However, COBOL doesn’t have built-in XML support like Go does, so we’re using a simpler approach of writing and reading XML as text.

The program is divided into two main procedures:

CREATE-XML: This procedure creates an XML file representing a plant, similar to the original example. It writes each line of XML to a file.
READ-XML: This procedure reads the XML file that was just created and displays its contents.

To run this program:

Save the code in a file with a .cob extension (e.g., xml-processing.cob).
Compile the program using a COBOL compiler.
Run the compiled program.

The output will be the XML content that was written to the file.

Note that this is a very basic implementation of XML processing in COBOL. For more complex XML operations, you might need to use additional libraries or more sophisticated parsing techniques.

Also, COBOL doesn’t have direct equivalents for some of the Go features used in the original example, such as structs with tags or the xml.Unmarshal function. In a real-world scenario, you might need to use more complex COBOL structures and custom parsing logic to achieve similar functionality.

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