Add render context

md_pdf/build/__init__.py

@@ -11,5 +11,5 @@ def build(config):
     if 'html' in config.output_formats:
         output_html(doc, os.path.abspath(config.output_dir))
     if 'pdf' in config.output_formats:
-        render_cover()
+        render_cover(config.context.toDict())
         export_pdf(doc, config)

md_pdf/build/pdf.py

@@ -21,14 +21,13 @@ PDF_OPTIONS = {
     "footer-spacing": 5,
     "header-spacing": 5,
 
-    "replace": [
-
-    ]
 }
 
 
 def export_pdf(content, config):
     PDF_OPTIONS['title'] = getattr(config, 'title', 'output')
+    PDF_OPTIONS['replace'] = list(config.context.items())
+
     return pdfkit.from_string(
         content,
         os.path.join(os.path.abspath(config.output_dir), 'output.pdf'),

md_pdf/config/validate.py

@@ -2,6 +2,7 @@ from md_pdf.exceptions import ConfigValidationException
 from md_pdf.consts import CSL_DIR
 import glob
 import os
+from dotmap import DotMap
 
 
 REQUIRED_KEYS = [
@@ -48,11 +49,28 @@ def validate_bibliography(config):
             raise ConfigValidationException("Could not find CSL '{}'".format(config.bibliography.csl))
 
 
+def validate_context(config):
+    if 'context' not in config:
+        return
+
+    if type(config.context) != DotMap:
+        raise ConfigValidationException("Context must be key:value store")
+
+    non_str_keys = [key for key in config.context.keys() if type(key) != str]
+    if non_str_keys:
+        raise ConfigValidationException("Context keys must be strings. Non-strings: {}".format(", ".join(non_str_keys)))
+
+    invalid_values = [value for value in config.context.values() if type(value) in [list, dict, DotMap]]
+    if invalid_values:
+        raise ConfigValidationException("Context keys must be plain. Invalid values: {}".format(", ".join(invalid_values)))
+
+
 def validate_config(config):
     for validator in [
         check_required_keys,
         test_input,
         test_output,
-        validate_bibliography
+        validate_bibliography,
+        validate_context
     ]:
         validator(config)

test-files/mdp.yml

@@ -6,3 +6,5 @@ output_dir: out/
 bibliography:
   references: bib.yaml
   csl: apa
+context:
+  foo: bar