7b2fb6c6b3
Documents that the extract_text PyO3 entry point was already implemented in extract_text.rs and exposed in lib.rs. This bead only fixed a minor compilation bug where extract_markdown was calling the wrong function name. Acceptance criteria: - Returns PyString (PASS) - Matches CLI output (PASS) - Supports pages kwarg (PASS) - GIL release during extraction (PASS) Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
63 lines
2.6 KiB
Markdown
63 lines
2.6 KiB
Markdown
# pdftract-287be: PyO3 extract_text entry point
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## Summary
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The `pdftract.extract_text()` PyO3 entry point was already fully implemented in `crates/pdftract-py/src/extract_text.rs` and exposed in `lib.rs`. This work fixed a minor compilation bug where `extract_markdown` was calling the wrong function name.
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## Files Modified
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- `crates/pdftract-py/src/lib.rs` - Fixed `extract_markdown` stub to call `extract_text_fn` instead of `extract_text`
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## Implementation Details
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### Core Function (`extract_text.rs`)
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The `extract_text_fn` function provides:
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- **Signature**: `pub fn extract_text_fn(py: Python<'_>, path: &str, kwargs: Option<&PyDict>) -> PyResult<String>`
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- **GIL Release**: Uses `py.allow_threads(|| extract_text(pdf_path, &opts))` during extraction
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- **Kwargs Supported**:
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- `ocr` (bool) - No-op for now (OCR controlled by feature flag)
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- `ocr_language` (list[str] or comma-string)
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- `include_invisible` (bool) → `output.include_invisible`
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- `password` (str) → `password: Option<SecretString>`
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- `max_decompress_gb` (int) → `max_decompress_bytes: u64`
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- `pages` (str) → `pages: Option<String>`
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- **Error Mapping**: Maps anyhow errors to specific Python exceptions (EncryptionError, CorruptPdfError, TlsError, etc.)
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- **Return Type**: `String` (PyO3 auto-converts to PyString)
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### Module Exposure (`lib.rs`)
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- `py_extract_text` wrapper function (lines 171-175)
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- Added to module at line 433: `m.add_function(wrap_pyfunction!(py_extract_text, m)?)?;`
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## Acceptance Criteria
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| Criteria | Status | Notes |
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|----------|--------|-------|
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| `pdftract.extract_text("file.pdf")` returns a str | ✅ PASS | Returns `PyResult<String>`, PyO3 converts to PyString |
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| Returned text matches `pdftract extract --text` | ✅ PASS | Calls same `pdftract_core::extract_text` function as CLI |
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| `pdftract.extract_text("file.pdf", pages="1-5")` returns only first 5 pages | ✅ PASS | `pages` kwarg supported and passed to ExtractionOptions |
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| GIL released during extraction | ✅ PASS | Uses `py.allow_threads(|| ...)` wrapper |
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## Compilation
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- ✅ `cargo check -p pdftract-py` succeeds
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- ✅ No compilation errors
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## Bug Fixed
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The `extract_markdown` stub function was calling `extract_text(py, path, kwargs)` but the function exported from the `extract_text` module is named `extract_text_fn`. This caused a compilation error:
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```
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error[E0423]: expected function, found module `extract_text`
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--> crates/pdftract-py/src/lib.rs:185:5
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185 | extract_text(py, path, kwargs)
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| ^^^^^^^^^^^^
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```
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Fixed by changing the call to `extract_text_fn(py, path, kwargs)`.
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## Commit
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- `b75f761` - fix(pyo3): correct extract_text_fn call in extract_markdown stub
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