A Clarion to Text conversion is the process of extracting legacy, proprietary data stored in Clarion databases (typically .DAT or TopSpeed .TPS files) and formatting it into universally readable plain-text files like CSV, TSV, or XML.
Because Clarion databases store records in an indexed sequential (ISAM) format and require matching structural dictionaries (.DCT) to interpret, a direct data migration requires specialized tools or the Clarion environment itself. Phase 1: Preparation & Prerequisites
Before starting the extraction, compile all required components to prevent corrupted or unreadable text outputs:
Locate the Source Files: Ensure you have the database files (.DAT or .TPS) alongside their corresponding index files (.K01, .K02) and memo files (.MEM) if applicable.
Secure the Data Dictionary: Locate the Clarion Dictionary (.DCT) file. This file defines the columns, data types, and schemas required to accurately interpret raw data.
Verify Passwords: If your source database uses encryption or security flags, confirm you have the required passwords to prevent authentication blocks. Phase 2: Migration Strategies & Step-by-Step Conversion
Depending on your engineering budget and environment, select one of the following methods to convert your Clarion database to text: Method A: Using Built-In Clarion Utilities (TopScan / CCVT)
If you have access to the SoftVelocity Clarion Development Environment or native DOS files, use the built-in system tools:
Launch TopScan: Open the TopScan utility included with modern Clarion installations.
Load the File: Navigate to File > Open and select your target .DAT or .TPS database.
Export to Text: Select the Export function and choose Comma Separated Values (.CSV) or Basic (ASCII) as your target format.
(Legacy Alternative) Use CCVT: For older DOS-based applications, run CCVT.EXE from your command line: CCVT.EXE Clarion MyFile.DAT Basic MyFile.CSV Use code with caution. Method B: Automated Third-Party Tools (CLA2TXT)
For automated migrations or batch scripts, utilizing dedicated conversion utilities handles complex data types seamlessly:
Download a Utility: Use dedicated command-line components like the Scalabium CLA2TXT Converter.
Map Field Inclusions: These utilities automatically support complex Clarion structures like MEMO, BLOB, graphics, arrays, and group data fields.
Run Command Script: Execute the conversion via the command line or integrate it into a Windows Task Scheduler: cla2txt.exe /S:source.dat /D:target.csv /DCLM:, Use code with caution.
Method C: Generating a Custom Program via Clarion Dictionary (DCT)
If your schema contains custom data transformation logic, write a lightweight script within Clarion:
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