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xls_doc/docs/superpowers/specs/2026-06-18-docfill-p0-cli-design.md
2026-06-18 20:03:47 +08:00

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# Docfill P0 CLI Design
## Goal
Make the MVP safe enough for a digital employee to call repeatedly from scripts.
## CLI Contract
```bash
docfill run --config task.json --var date=2026-06-18
docfill run -c task.json --var date=2026-06-18 --var department=营销部
```
Exit codes:
- `0`: success.
- `1`: task execution or validation failed.
- `2`: CLI usage error.
Output:
- Success writes a short generated-file summary to stdout.
- Errors write one clear line to stderr with the `docfill:` prefix.
Reserved for later:
- `docfill validate`.
- `--json`.
## P0 Behavior
- Resolve relative paths in config from the config file directory.
- Support config vars and repeated CLI vars.
- CLI vars override config vars.
- Per-row data overrides vars during template rendering.
- Generated `_row` is always the 1-based row number.
- Support SQLite `params` for `?` query placeholders.
- Support Excel `header_row`, 1-based, default `1`.
- Do not overwrite existing output files unless `output.overwrite` is `true`.
- Sanitize placeholder values only when rendering output file paths.
- Fail if any template placeholder is missing from the current row context.
- Fail if any `{{field}}` remains after rendering.
## Config Shape
```json
{
"vars": {
"date": "2026-06-18"
},
"data": {
"type": "sqlite",
"path": "./data.db",
"query": "select name, done from daily where date = ?",
"params": ["{{date}}"]
},
"template": {
"path": "./template.docx"
},
"output": {
"path": "./out/report_{{date}}_{{name}}_{{_row}}.docx",
"overwrite": false
}
}
```