first commit

.venv/Lib/site-packages/nbconvert/exporters/latex.py

@@ -0,0 +1,87 @@
+"""LaTeX Exporter class"""
+
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+
+from traitlets import default
+from traitlets.config import Config
+
+from nbconvert.filters.filter_links import resolve_references
+from nbconvert.filters.highlight import Highlight2Latex
+
+from .templateexporter import TemplateExporter
+
+
+class LatexExporter(TemplateExporter):
+    """
+    Exports to a Latex template.  Inherit from this class if your template is
+    LaTeX based and you need custom transformers/filters.
+    If you don't need custom transformers/filters, just change the
+    'template_file' config option.  Place your template in the special "/latex"
+    subfolder of the "../templates" folder.
+    """
+
+    export_from_notebook = "LaTeX"
+
+    @default("file_extension")
+    def _file_extension_default(self):
+        return ".tex"
+
+    @default("template_name")
+    def _template_name_default(self):
+        return "latex"
+
+    output_mimetype = "text/latex"
+
+    def default_filters(self):
+        yield from super().default_filters()
+        yield ("resolve_references", resolve_references)
+
+    @property
+    def default_config(self):
+        c = Config(
+            {
+                "NbConvertBase": {
+                    "display_data_priority": [
+                        "text/latex",
+                        "application/pdf",
+                        "image/png",
+                        "image/jpeg",
+                        "image/svg+xml",
+                        "text/markdown",
+                        "text/plain",
+                    ]
+                },
+                "ExtractOutputPreprocessor": {"enabled": True},
+                "SVG2PDFPreprocessor": {"enabled": True},
+                "LatexPreprocessor": {"enabled": True},
+                "SphinxPreprocessor": {"enabled": True},
+                "HighlightMagicsPreprocessor": {"enabled": True},
+            }
+        )
+        c.merge(super().default_config)
+        return c
+
+    def from_notebook_node(self, nb, resources=None, **kw):
+        langinfo = nb.metadata.get("language_info", {})
+        lexer = langinfo.get("pygments_lexer", langinfo.get("name", None))
+        highlight_code = self.filters.get(
+            "highlight_code", Highlight2Latex(pygments_lexer=lexer, parent=self)
+        )
+        self.register_filter("highlight_code", highlight_code)
+
+        return super().from_notebook_node(nb, resources, **kw)
+
+    def _create_environment(self):
+        environment = super()._create_environment()
+
+        # Set special Jinja2 syntax that will not conflict with latex.
+        environment.block_start_string = "((*"
+        environment.block_end_string = "*))"
+        environment.variable_start_string = "((("
+        environment.variable_end_string = ")))"
+        environment.comment_start_string = "((="
+        environment.comment_end_string = "=))"
+
+        return environment