Export memo fields with other field types to a text file with Visual FoxPro

This article describes how to dynamically export records that contain Memo fields in a table, together with the other field types, into a comma delimited text file.

Original product version:   Visual FoxPro
Original KB number:   241424

Summary

This article demonstrates how to dynamically export records that contain Memo fields in a table, together with the other field types, into a comma delimited text file.

More information

The sample code in this article follows this order:

1. Prompts for a source table (.dbf file).
2. Prompts for a target text file (.txt file).
3. Export the contents of the table to the text file.

The code scans and determines every field type and every record in the table and then processes them accordingly to the data type:

CLOSE ALL
CLEAR ALL

lcFieldString = ''
lcMemo = ''

USE GETFILE('dbf', 'Select DBF') && Prompts for table to be used.

lnFieldCount = AFIELDS(laGetFields) && Builds array of fields from the
&& selected table.

*!* Prompt for Output file and use Low-Level functions
*!* to create it.
lcTextFile = FCREATE(GETFILE('txt', 'Select Text'))

*!* Starts scanning the table and converts the fields
*!* values according to their types **
SCAN
    WAIT WINDOW STR(RECNO()) + ' Of ' + STR(RECCOUNT()) NOWAIT

    FOR lnCount = 1 TO lnFieldCount
        lcType = laGetFields(lnCount, 2)

        IF lcType # 'G' && Don't try to turn a general field into a string
            lcString = EVALUATE(laGetFields(lnCount, 1))
        EndIf

        DO CASE
            CASE lcType = 'M' && Process the Memo Fields
                lnMemoLines = MEMLINES(EVALUATE(laGetFields(lnCount,1)))
                FOR lnLoop = 1 TO lnMemoLines
                    IF lnLoop < lnMemoLines
                        lcMemo = lcMemo + ;
                            ALLTRIM(MLINE(EVALUATE(laGetFields(lnCount, 1)), ;
                    lnLoop)) + ' '
                    ELSE
                        lcMemo = lcMemo + ;
                            ALLTRIM(MLINE(EVALUATE(laGetFields(lnCount, 1)), ;
                    lnLoop))
                    ENDif
                ENDfor

                lcString = lcMemo
                lcMemo = ''
            CASE lcType = 'G' && Process the General Fields
                lcString = 'Gen'
            CASE lcType = 'D' && Process the Date Fields
                lcString = DTOC(lcString)
            CASE lcType = 'T' && Process the DateTime Fields
                lcString = TTOC(lcString)
            CASE lcType = 'N' && Process the Numeric Fields
                lcString = STR(lcString, LEN(STR(lcString)), 2)
            CASE lcType = 'I' && Process the Integer Fields
                lcString = STR(lcString)
            CASE lcType = 'L' && Process the Logical Fields
                IF lcString = .T.
                    lcString = 'T'
                ELSE
                    lcString = 'F'
                ENDif
        ENDcase

        IF lnCount < lnFieldCount && Determines if the last field was
        && processed and sets the closing quote.
        lcFieldString = lcFieldString + '"' + lcString + '"' + ','
        ELSE
        lcFieldString = lcFieldString + '"' + lcString + '"'
        ENDif
    ENDfor

    FPUTS(lcTextFile, lcFieldString) && Writes string to the text file.
    lcFieldString = ''
ENDscan

FCLOSE(lcTextFile)

CLOSE All
CLEAR All
WAIT WINDOW 'Text File Creation Completed' NOWAIT