added merge pdfs, fixed jpgstopdf arg issues,

mdtohtml.py

@@ -1,25 +1,55 @@
 import markdown
 import sys
+import os
 
-if len(sys.argv) != 3:
-    print("Usage: python md_to_html.py <input_md_path> <output_html_path>")
-    sys.exit(1)
+def convert_md_to_html(input_md_path, output_html_path):
+    # Check if the input Markdown file exists
+    if not os.path.isfile(input_md_path):
+        print(f"Error: The input Markdown file '{input_md_path}' does not exist.")
+        sys.exit(1)
 
-input_md_path = sys.argv[1]
-output_html_path = sys.argv[2]
+    # Check if the output directory is writable
+    output_dir = os.path.dirname(output_html_path)
+    if output_dir and not os.access(output_dir, os.W_OK):
+        print(f"Error: The output directory '{output_dir}' is not writable.")
+        sys.exit(1)
 
-try:
-    with open(input_md_path, 'r') as md_file:
-        md_content = md_file.read()
-except Exception as e:
-    print(f"Error reading Markdown file: {e}")
-    sys.exit(1)
+    try:
+        # Read the Markdown file content
+        with open(input_md_path, 'r', encoding='utf-8') as md_file:
+            md_content = md_file.read()
+    except FileNotFoundError:
+        print(f"Error: The input Markdown file '{input_md_path}' was not found.")
+        sys.exit(1)
+    except PermissionError:
+        print(f"Error: Permission denied when reading '{input_md_path}'.")
+        sys.exit(1)
+    except Exception as e:
+        print(f"An unexpected error occurred while reading the Markdown file: {e}")
+        sys.exit(1)
 
-try:
-    html_content = markdown.markdown(md_content)
-    with open(output_html_path, 'w') as html_file:
-        html_file.write(html_content)
-    print(f"Conversion complete. Check the {output_html_path} file.")
-except Exception as e:
-    print(f"Error writing HTML file: {e}")
-    sys.exit(1)
+    try:
+        # Convert Markdown content to HTML
+        html_content = markdown.markdown(md_content)
+        
+        # Write the HTML content to the output file
+        with open(output_html_path, 'w', encoding='utf-8') as html_file:
+            html_file.write(html_content)
+        
+        print(f"Conversion complete. Check the '{output_html_path}' file.")
+    except PermissionError:
+        print(f"Error: Permission denied when writing to '{output_html_path}'.")
+        sys.exit(1)
+    except Exception as e:
+        print(f"An unexpected error occurred while writing the HTML file: {e}")
+        sys.exit(1)
+
+if __name__ == "__main__":
+    if len(sys.argv) != 3:
+        print("Usage: python mdtohtml.py <input_md_path> <output_html_path>")
+        sys.exit(1)
+
+    input_md_path = sys.argv[1]
+    output_html_path = sys.argv[2]
+
+    convert_md_to_html(input_md_path, output_html_path)