Initial commit for profile PyHasher

.vscode/launch.json

@@ -0,0 +1,15 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+    
+        {
+            "name": "Python Debugger: Module",
+            "type": "debugpy",
+            "request": "launch",
+            "module": "pyhasher"
+        }
+    ]
+}

pyhasher/__main__.py

@@ -1,17 +1,24 @@
 # pyhasher/__main__.py
 
-# Example import assuming your main logic is in a 'main' function
-# within a 'app' module in your 'pyhasher.core' package.
-# from pyhasher.core.app import main as start_application
-#
-# Or, if you have a function in pyhasher.core.core:
-# from pyhasher.core.core import main_function
+import tkinter as tk
+from pyhasher.gui.gui import PyHasherApp
 
 def main():
-    print(f"Running PyHasher...")
-    # Placeholder: Replace with your application's entry point
-    # Example: start_application()
-    print("To customize, edit 'pyhasher/__main__.py' and your core modules.")
+    """
+    Main function to initialize and run the PyHasher application.
+    
+    This function sets up the main Tkinter window and starts the GUI application.
+    """
+    # Create the main window
+    root = tk.Tk()
+    
+    # Create an instance of the application
+    app = PyHasherApp(root)
+    
+    # Start the Tkinter event loop
+    root.mainloop()
 
 if __name__ == "__main__":
+    # This block allows the script to be run directly,
+    # though the primary entry point is via 'python -m pyhasher'
     main()

pyhasher/core/core.py

@@ -0,0 +1,67 @@
+# pyhasher/core/core.py
+
+import hashlib
+import zlib
+
+# Define a constant for the chunk size to read from the file.
+# This helps in processing large files without loading them entirely into memory.
+BUFFER_SIZE = 65536  # 64KB
+
+def calculate_hashes_for_file(file_path: str) -> dict:
+    """
+    Calculates various hashes for a given file.
+
+    Includes checksums (CRC32, Adler-32) and cryptographic hashes 
+    (MD5, SHA-1, SHA-2, SHA-3, BLAKE2).
+
+    Args:
+        file_path: The absolute path to the file.
+
+    Returns:
+        A dictionary containing the calculated hashes.
+        Example: {'CRC32': '...', 'MD5': '...', ...}
+    
+    Raises:
+        IOError: If the file cannot be read.
+    """
+    # Initialize checksums
+    crc32_val = 0
+    adler32_val = 1  # Adler-32 starts with a value of 1
+
+    # Initialize cryptographic hashers
+    hashers = {
+        "MD5": hashlib.md5(),
+        "SHA-1": hashlib.sha1(),
+        "SHA-256": hashlib.sha256(),
+        "SHA-384": hashlib.sha384(),
+        "SHA-512": hashlib.sha512(),
+        "SHA3-256": hashlib.sha3_256(),
+        "BLAKE2b": hashlib.blake2b(),
+    }
+
+    with open(file_path, "rb") as f:
+        while True:
+            # Read the file in chunks
+            data = f.read(BUFFER_SIZE)
+            if not data:
+                break
+            
+            # Update each cryptographic hasher
+            for hasher in hashers.values():
+                hasher.update(data)
+            
+            # Update checksums
+            crc32_val = zlib.crc32(data, crc32_val)
+            adler32_val = zlib.adler32(data, adler32_val)
+    
+    # Prepare the results dictionary, starting with checksums
+    results = {
+        "CRC32": f"{crc32_val:08x}",
+        "Adler-32": f"{adler32_val:08x}",
+    }
+    
+    # Add cryptographic hashes to the results
+    for name, hasher in hashers.items():
+        results[name] = hasher.hexdigest()
+    
+    return results

pyhasher/gui/gui.py

@@ -0,0 +1,130 @@
+# pyhasher/gui/gui.py
+
+import tkinter as tk
+from tkinter import filedialog, messagebox
+import os
+
+# Import the core logic function
+from pyhasher.core.core import calculate_hashes_for_file
+
+# Defines the order in which hashes will be displayed in the GUI.
+# This must match the keys returned by the core function.
+HASH_DISPLAY_ORDER = (
+    "CRC32",
+    "Adler-32",
+    "MD5",
+    "SHA-1",
+    "SHA-256",
+    "SHA-384",
+    "SHA-512",
+    "SHA3-256",
+    "BLAKE2b",
+)
+
+class PyHasherApp:
+    """
+    The main GUI application class for PyHasher.
+    It handles the user interface and interactions.
+    """
+    def __init__(self, root_window):
+        """
+        Initialize the application.
+
+        Args:
+            root_window: The main tkinter window.
+        """
+        self.root = root_window
+        self.root.title("PyHasher")
+        self.root.geometry("1024x400")  # Increased height for more hashes
+        self.file_path = tk.StringVar()
+
+        # --- Main frame ---
+        main_frame = tk.Frame(self.root, padx=10, pady=10)
+        main_frame.pack(fill=tk.BOTH, expand=True)
+
+        # --- File selection widgets ---
+        self._create_file_selection_widgets(main_frame)
+
+        # --- Hash results widgets ---
+        self._create_hash_display_widgets(main_frame)
+        
+        # --- Action buttons ---
+        self._create_action_buttons(main_frame)
+
+    def _create_file_selection_widgets(self, parent_frame):
+        """Creates widgets for file selection."""
+        file_frame = tk.Frame(parent_frame)
+        file_frame.pack(fill=tk.X, pady=(0, 10))
+
+        file_label = tk.Label(file_frame, text="File:")
+        file_label.pack(side=tk.LEFT, padx=(0, 5))
+
+        file_entry = tk.Entry(file_frame, textvariable=self.file_path, state="readonly")
+        file_entry.pack(side=tk.LEFT, fill=tk.X, expand=True)
+
+        browse_button = tk.Button(file_frame, text="Browse...", command=self.select_file)
+        browse_button.pack(side=tk.LEFT, padx=(5, 0))
+
+    def _create_hash_display_widgets(self, parent_frame):
+        """Creates labels and entry boxes for displaying hash results."""
+        results_frame = tk.Frame(parent_frame)
+        results_frame.pack(fill=tk.BOTH, expand=True)
+
+        # Dictionary to hold hash names and their corresponding tk.StringVar
+        self.hash_vars = {name: tk.StringVar() for name in HASH_DISPLAY_ORDER}
+
+        # Create labels and read-only entry widgets for each hash type
+        for i, name in enumerate(HASH_DISPLAY_ORDER):
+            label = tk.Label(results_frame, text=f"{name}:")
+            label.grid(row=i, column=0, sticky="w", pady=2)
+            
+            entry = tk.Entry(results_frame, textvariable=self.hash_vars[name], state="readonly")
+            entry.grid(row=i, column=1, sticky="ew", pady=2, padx=(5, 0))
+
+        # Configure the grid to expand the entry column
+        results_frame.columnconfigure(1, weight=1)
+
+    def _create_action_buttons(self, parent_frame):
+        """Creates the main action buttons."""
+        button_frame = tk.Frame(parent_frame)
+        button_frame.pack(fill=tk.X, pady=(10, 0), side=tk.BOTTOM)
+
+        calculate_button = tk.Button(
+            button_frame,
+            text="Calculate Hashes",
+            command=self.calculate_hashes
+        )
+        calculate_button.pack(side=tk.RIGHT)
+
+    def select_file(self):
+        """Opens a file dialog to select a file and clears old results."""
+        path = filedialog.askopenfilename()
+        if path:
+            self.file_path.set(path)
+            # Clear previous results when a new file is selected
+            for var in self.hash_vars.values():
+                var.set("")
+
+    def calculate_hashes(self):
+        """
+        Gets the file path, calls the core function to calculate hashes,
+        and displays the results in the GUI.
+        """
+        current_file_path = self.file_path.get()
+        if not current_file_path or not os.path.exists(current_file_path):
+            messagebox.showerror("Error", "Please select a valid file first.")
+            return
+
+        try:
+            # Call the decoupled core function to do the heavy lifting
+            all_hashes = calculate_hashes_for_file(current_file_path)
+            
+            # Update the GUI with the results from the core function
+            for name, value in all_hashes.items():
+                if name in self.hash_vars:
+                    self.hash_vars[name].set(value)
+
+        except IOError as e:
+            messagebox.showerror("Error", f"Could not read file: {e}")
+        except Exception as e:
+            messagebox.showerror("Error", f"An unexpected error occurred: {e}")