NB-076
68 lines
2.3 KiB
Markdown
68 lines
2.3 KiB
Markdown
# 15-csv-fb-nolf: CSV to Fixed-Block Conversion (No Line Feed)
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## 电信业务场景
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外部CDR CSV取込(无LF)。读取外部系统提供的CSV格式CDR文件，使用STRING语句将各字段合并为固定长记录。无换行展开。
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## Description
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Reads a LINE SEQUENTIAL CSV file (comma-separated, 3 fields) and
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converts each row to a fixed-length output record using the STRING
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statement. Handles basic CSV quoting (double-quoted fields with
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embedded commas).
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## Record Layout
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### Input (LINE SEQUENTIAL CSV)
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Each line contains 3 comma-separated fields. Fields may be quoted
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with double-quotes when they contain commas or leading/trailing spaces.
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### Output (fixed-length: 100 bytes)
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One fixed-length record per CSV row. Fields are joined with pipe ('|')
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separators via STRING.
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| Component | Description |
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|-----------|----------------------------|
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| FIELD1 | Padded/spaced as parsed |
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| Separator | Pipe character '|' |
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| FIELD2 | Padded/spaced as parsed |
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| Separator | Pipe character '|' |
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| FIELD3 | Padded/spaced as parsed |
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## Files
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| File | Purpose |
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|-------------------------|--------------------------------|
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| main-15-csv-fb-nolf.cbl | Main COBOL program |
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| data-gen.sh | Generate CSV test data |
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| run.sh | Compile, run, verify |
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| README.md | This file |
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## Tests
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| Test Case | Description |
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|-------------------------|-------------------------------------|
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| Standard CSV | Normal comma-separated values |
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| Empty middle field | Field2 is empty (,,) |
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| Quoted commas | Field contains embedded comma |
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| Quoted spaces | Quoted field with padding spaces |
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| All empty | Line with only commas |
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| Long text | Field longer than usual |
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## Usage
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```bash
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cd 15-csv-fb-nolf
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bash data-gen.sh
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bash run.sh
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```
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## Expected Behavior
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- Each CSV line produces exactly one fixed-length (100-byte) output record.
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- Quoted fields are unquoted during parsing.
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- Embedded commas within quoted fields are preserved.
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- Output records use '|' as separator between fields.
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