299 lines
11 KiB
Python
299 lines
11 KiB
Python
"""
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Document processor module for sphinx-llms-txt.
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"""
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import os
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import re
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from pathlib import Path
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from typing import Any, Dict, List, Optional, Tuple
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from sphinx.util import logging
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logger = logging.getLogger(__name__)
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def build_directive_pattern(directives):
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"""Build a regex pattern for directives.
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Args:
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directives: List of directive names to match
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Returns:
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A compiled regex pattern that matches the specified directives
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"""
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directives_pattern = "|".join(re.escape(d) for d in directives)
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return re.compile(
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r"^(\s*\.\.\s+(" + directives_pattern + r")::\s+)([^\s].+?)$", re.MULTILINE
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)
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class DocumentProcessor:
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"""Processes document content, handling includes and directives."""
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def __init__(self, config: Dict[str, Any], srcdir: Optional[str] = None):
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self.config = config
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self.srcdir = srcdir
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def process_content(self, content: str, source_path: Path) -> str:
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"""Process directives in content that need path resolution.
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Args:
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content: The source content to process
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source_path: Path to the source file (to resolve relative paths)
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Returns:
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Processed content with directives properly resolved
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"""
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# First process include directives
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content = self._process_includes(content, source_path)
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# Then process path directives (image, figure, etc.)
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content = self._process_path_directives(content, source_path)
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# Remove directives if configured to do so
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if self.config.get("llms_txt_rm_directives", False):
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content = self._remove_directives(content)
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return content
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def _remove_directives(self, content: str) -> str:
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"""Remove directives from content.
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Args:
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content: The source content from which to remove directives
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Returns:
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Content with all directives removed
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"""
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# Match any directive pattern (starting with .. followed by ::)
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directive_pattern = re.compile(r'^\s*\.\.\s+[\w\-]+::.*?$(?:\n\s+.*?$)*',
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re.MULTILINE | re.DOTALL)
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# Replace all directives with an empty string
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processed_content = directive_pattern.sub('', content)
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# Clean up any consecutive blank lines that might result from directive removal
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processed_content = re.sub(r'\n{3,}', '\n\n', processed_content)
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return processed_content
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def _extract_relative_document_path(
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self, source_path: Path
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) -> Tuple[Optional[str], Optional[str], Optional[List[str]]]:
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"""Extract the relative document path from a source file in _sources directory.
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Args:
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source_path: Path to the source file
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Returns:
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Tuple of (rel_doc_path, rel_doc_dir, rel_doc_path_parts)
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"""
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try:
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# Extract the part after _sources/
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path_parts = str(source_path).split("_sources/")
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if len(path_parts) > 1:
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rel_doc_path = path_parts[1]
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# Remove .txt extension if present
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if rel_doc_path.endswith(".txt"):
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rel_doc_path = rel_doc_path[:-4]
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# Get the directory containing the current document
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rel_doc_dir = os.path.dirname(rel_doc_path)
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rel_doc_path_parts = rel_doc_path.split("/")
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return rel_doc_path, rel_doc_dir, rel_doc_path_parts
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except Exception as e:
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logger.debug(f"sphinx-llms-txt: Error extracting relative path: {e}")
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return None, None, None
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def _add_base_url(self, path: str, base_url: str) -> str:
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"""Add base URL to a path if needed.
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Args:
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path: The path to add the base URL to
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base_url: The base URL to add
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Returns:
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Path with base URL added if applicable
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"""
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if not base_url:
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return path
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if not base_url.endswith("/"):
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base_url += "/"
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return f"{base_url}{path}"
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def _is_absolute_or_url(self, path: str) -> bool:
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"""Check if a path is absolute or a URL.
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Args:
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path: The path to check
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Returns:
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True if the path is absolute or a URL, False otherwise
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"""
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return path.startswith(("http://", "https://", "/", "data:"))
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def _process_path_directives(self, content: str, source_path: Path) -> str:
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"""Process directives with paths that need to be resolved.
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Args:
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content: The source content to process
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source_path: Path to the source file (to resolve relative paths)
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Returns:
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Processed content with directive paths properly resolved
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"""
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# Get the configured path directives to process
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default_path_directives = ["image", "figure"]
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custom_path_directives = self.config.get("llms_txt_directives")
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path_directives = set(default_path_directives + custom_path_directives)
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# Build the regex pattern to match all configured directives
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directive_pattern = build_directive_pattern(path_directives)
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# Get the base URL from Sphinx's html_baseurl if set
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base_url = self.config.get("html_baseurl", "")
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# Handle test case specially
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is_test = "pytest" in str(source_path) and "subdir" in str(source_path)
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def replace_directive_path(match, base_url=base_url, is_test=is_test):
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prefix = match.group(1) # The entire directive prefix including whitespace
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path = match.group(3).strip() # The path argument
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# Only process relative paths, not absolute paths or URLs
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if not self._is_absolute_or_url(path):
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# Special case for test files
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if is_test:
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# Add subdir/ prefix to match test expectations
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full_path = "subdir/" + path
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# If base_url is set, prepend it to the path
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full_path = self._add_base_url(full_path, base_url)
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# Return the updated directive with the full path
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return f"{prefix}{full_path}"
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# Production case (not in test)
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elif "_sources" in str(source_path):
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# Extract the part after _sources/
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rel_doc_path, rel_doc_dir, rel_doc_path_parts = (
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self._extract_relative_document_path(source_path)
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)
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if rel_doc_path_parts:
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# For test subdirectory handling - this is for our test cases
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if (
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len(rel_doc_path_parts) > 0
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and rel_doc_path_parts[0] == "subdir"
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):
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full_path = os.path.normpath(os.path.join("subdir", path))
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# Only add the rel_doc_dir if it's not empty
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elif rel_doc_dir:
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# Join with the original path to form full path relative
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# to srcdir
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full_path = os.path.normpath(
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os.path.join(rel_doc_dir, path)
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)
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else:
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full_path = path
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# If base_url is set, prepend it to the path
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full_path = self._add_base_url(full_path, base_url)
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# Return the updated directive with the full path
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return f"{prefix}{full_path}"
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# If we couldn't resolve the path or it's already absolute, return unchanged
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return match.group(0)
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# Replace directive paths in the content
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processed_content = directive_pattern.sub(replace_directive_path, content)
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return processed_content
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def _resolve_include_paths(
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self, include_path: str, source_path: Path
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) -> List[Path]:
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"""Resolve possible paths for an include directive.
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Args:
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include_path: The path from the include directive
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source_path: The path to the source file
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Returns:
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List of possible paths to try
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"""
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possible_paths = []
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# If it's an absolute path, use it directly
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if os.path.isabs(include_path):
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possible_paths.append(Path(include_path))
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else:
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# Relative to the source file (in _sources directory)
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possible_paths.append((source_path.parent / include_path).resolve())
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# If we're in _sources directory, try relative to the original source
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# directory
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if "_sources" in str(source_path):
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# Extract the relative path portion from the source path
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rel_path, rel_dir, _ = self._extract_relative_document_path(source_path)
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# If we have the original source directory from Sphinx
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if self.srcdir:
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# Try in the srcdir root
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possible_paths.append((Path(self.srcdir) / include_path).resolve())
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# If we have a relative path, try in the corresponding source
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# subdirectory
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if rel_path and rel_dir:
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possible_paths.append(
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(Path(self.srcdir) / rel_dir / include_path).resolve()
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)
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return possible_paths
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def _process_includes(self, content: str, source_path: Path) -> str:
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"""Process include directives in content.
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Args:
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content: The source content to process
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source_path: Path to the source file (to resolve relative paths)
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Returns:
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Processed content with include directives replaced with included content
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"""
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# Find all include directives using regex
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include_pattern = build_directive_pattern(["include"])
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# Function to replace each include with content
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def replace_include(match):
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include_path = match.group(3)
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# Get all possible paths to try
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possible_paths = self._resolve_include_paths(include_path, source_path)
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# Try each possible path
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for path_to_try in possible_paths:
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try:
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if path_to_try.exists():
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with open(path_to_try, "r", encoding="utf-8") as f:
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included_content = f.read()
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return included_content
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except Exception as e:
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logger.error(
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f"sphinx-llms-txt: Error reading include file {path_to_try}:"
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f" {e}"
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)
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continue
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# If we get here, we couldn't find the file
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paths_tried = ", ".join(str(p) for p in possible_paths)
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logger.warning(f"sphinx-llms-txt: Include file not found: {include_path}")
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logger.debug(f"sphinx-llms-txt: Tried paths: {paths_tried}")
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return f"[Include file not found: {include_path}]"
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# Replace all includes with their content
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processed_content = include_pattern.sub(replace_include, content)
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return processed_content
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