NB-07621-csv-fb-lf: CSV to Fixed-Block Conversion (with Line Feed)
电信业务场景
外部CDR CSV取込(有LF)。读取含改行的CSV格式CDR文件，通过INSPECT REPLACING将改行展开为多条固定长记录。
Description
Reads a LINE SEQUENTIAL CSV file where Field3 may contain pipe ('|') markers that indicate record-splitting points. Uses INSPECT TALLYING to count markers and INSPECT REPLACING to transform them, then writes one output record per segment. One CSV input line can produce multiple output records ("line feed expansion").
Record Layout
Input (LINE SEQUENTIAL CSV)
| Field | Description |
|---|---|
| FIELD1 | Key code |
| FIELD2 | Group identifier |
| FIELD3 | Data values (may contain ' |
Field3 with '|' markers:
ITEM1|ITEM2|ITEM3 -> produces 3 output records
Output (fixed-length: 100 bytes)
Format: FIELD1|FIELD2|SEGMENT padded to 100 bytes.
Files
| File | Purpose |
|---|---|
| main-21-csv-fb-lf.cbl | Main COBOL program |
| data-gen.sh | Generate CSV test data |
| run.sh | Compile, run, verify |
| README.md | This file |
Tests
| Test Case | Description |
|---|---|
| No pipe markers | 1:1 mapping, no expansion |
| Single pipe | 1 input line -> 2 output records |
| Double pipe | 1 input line -> 3 output records |
| Empty field3 | Empty field handling |
| Leading pipe | Leading empty segment |
| Trailing pipe | Trailing empty segment |
| Multiple segments | Many markers in one field |
| Quoted pipe | Pipe within quotes (literal) |
Usage
cd 21-csv-fb-lf
bash data-gen.sh
bash run.sh
Expected Behavior
- Each '|' separator produces an additional output record.
- INSPECT TALLYING counts the markers.
- INSPECT REPLACING transforms markers for processing.
- Output records are fixed-length (100 bytes).