skills/docx/scripts/office/validators/pptx.py

"""
Validator for PowerPoint presentation XML files against XSD schemas.
"""

import re

from .base import BaseSchemaValidator


class PPTXSchemaValidator(BaseSchemaValidator):
    PRESENTATIONML_NAMESPACE = "http://schemas.openxmlformats.org/presentationml/2006/main"

    ELEMENT_RELATIONSHIP_TYPES = {
        "sldid": "slide",
        "sldmasterid": "slidemaster",
        "notesmasterid": "notesmaster",
        "sldlayoutid": "slidelayout",
        "themeid": "theme",
        "tablestyleid": "tablestyles",
    }

    def validate(self):
        if not self.validate_xml():
            return False

        all_valid = True
        if not self.validate_namespaces():
            all_valid = False

        if not self.validate_unique_ids():
            all_valid = False

        if not self.validate_uuid_ids():
            all_valid = False

        if not self.validate_file_references():
            all_valid = False

        if not self.validate_slide_layout_ids():
            all_valid = False

        if not self.validate_content_types():
            all_valid = False

        if not self.validate_against_xsd():
            all_valid = False

        if not self.validate_notes_slide_references():
            all_valid = False

        if not self.validate_all_relationship_ids():
            all_valid = False

        if not self.validate_no_duplicate_slide_layouts():
            all_valid = False

        return all_valid

    def validate_uuid_ids(self):
        import lxml.etree

        errors = []
        uuid_pattern = re.compile(
            r"^[\{\(]?[0-9A-Fa-f]{8}-?[0-9A-Fa-f]{4}-?[0-9A-Fa-f]{4}-?[0-9A-Fa-f]{4}-?[0-9A-Fa-f]{12}[\}\)]?$"
        )

        for xml_file in self.xml_files:
            try:
                root = lxml.etree.parse(str(xml_file)).getroot()

                for elem in root.iter():
                    for attr, value in elem.attrib.items():
                        attr_name = attr.split("}")[-1].lower()
                        if attr_name == "id" or attr_name.endswith("id"):
                            if self._looks_like_uuid(value):
                                if not uuid_pattern.match(value):
                                    errors.append(
                                        f"  {xml_file.relative_to(self.unpacked_dir)}: "
                                        f"Line {elem.sourceline}: ID '{value}' appears to be a UUID but contains invalid hex characters"
                                    )

            except (lxml.etree.XMLSyntaxError, Exception) as e:
                errors.append(f"  {xml_file.relative_to(self.unpacked_dir)}: Error: {e}")

        if errors:
            print(f"FAILED - Found {len(errors)} UUID ID validation errors:")
            for error in errors:
                print(error)
            return False
        else:
            if self.verbose:
                print("PASSED - All UUID-like IDs contain valid hex values")
            return True

    def _looks_like_uuid(self, value):
        clean_value = value.strip("{}()").replace("-", "")
        return len(clean_value) == 32 and all(c.isalnum() for c in clean_value)

    def validate_slide_layout_ids(self):
        import lxml.etree

        errors = []

        slide_masters = list(self.unpacked_dir.glob("ppt/slideMasters/*.xml"))

        if not slide_masters:
            if self.verbose:
                print("PASSED - No slide masters found")
            return True

        for slide_master in slide_masters:
            try:
                root = lxml.etree.parse(str(slide_master)).getroot()

                rels_file = slide_master.parent / "_rels" / f"{slide_master.name}.rels"

                if not rels_file.exists():
                    errors.append(
                        f"  {slide_master.relative_to(self.unpacked_dir)}: "
                        f"Missing relationships file: {rels_file.relative_to(self.unpacked_dir)}"
                    )
                    continue

                rels_root = lxml.etree.parse(str(rels_file)).getroot()

                valid_layout_rids = set()
                for rel in rels_root.findall(
                    f".//{{{self.PACKAGE_RELATIONSHIPS_NAMESPACE}}}Relationship"
                ):
                    rel_type = rel.get("Type", "")
                    if "slideLayout" in rel_type:
                        valid_layout_rids.add(rel.get("Id"))

                for sld_layout_id in root.findall(
                    f".//{{{self.PRESENTATIONML_NAMESPACE}}}sldLayoutId"
                ):
                    r_id = sld_layout_id.get(f"{{{self.OFFICE_RELATIONSHIPS_NAMESPACE}}}id")
                    layout_id = sld_layout_id.get("id")

                    if r_id and r_id not in valid_layout_rids:
                        errors.append(
                            f"  {slide_master.relative_to(self.unpacked_dir)}: "
                            f"Line {sld_layout_id.sourceline}: sldLayoutId with id='{l
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