File Watcher
The File Watcher provides functionality to monitor changes in specific files or directories. This allows you to receive automatic notifications when files or directories are modified.
Basic Usage
Start Watching a File
To monitor changes in a specific file, use the following:
result = app.watch_file("path/file.txt")
if result:
print("File watching started")
else:
print("Failed to start file watching")
Start Watching a Directory
To monitor changes in a specific directory, use the following:
result = app.watch_directory("/path/directory")
if result:
print("Directory watching started")
else:
print("Failed to start directory watching")
Set File Change Callback
You can set a callback function to be executed when a file is changed:
def on_file_changed(path):
print(f"File has been changed: {path}")
app.set_file_change_callback(on_file_changed)
Set Directory Change Callback
You can set a callback function to be executed when a directory is changed:
def on_directory_changed(path):
print(f"Directory has been changed: {path}")
app.set_directory_change_callback(on_directory_changed)
Stop Watching
To stop watching a specific file or directory, use the following:
result = app.stop_watching("/path/to/file_or_directory")
if result:
print("Watching stopped successfully")
else:
print("Failed to stop watching")
Check Watched Paths
To check all currently watched paths (files and directories), use the following:
watched_paths = app.get_watched_paths()
print("All watched paths:", watched_paths)
Get Only Watched Files
watched_files = app.get_watched_files()
print("Watched files:", watched_files)
Get Only Watched Directories
watched_directories = app.get_watched_directories()
print("Watched directories:", watched_directories)
Remove All Watched Paths
app.remove_all_watched_paths()
print("All watched paths have been removed.")
Usage Example
Here's a comprehensive example of using the File Watcher:
# Start watching file and directory
app.watch_file("/path/to/file1.txt")
app.watch_file("/path/to/file2.txt")
app.watch_file("/path/to/file3.txt")
app.watch_file("/path/to/file4.txt")
app.watch_directory("/path/to/directory1")
app.watch_directory("/path/to/directory2")
app.watch_directory("/path/to/directory3")
app.watch_directory("/path/to/directory4")
# Define callback functions
def on_file_changed(path):
print(f"File changed: {path}")
def on_directory_changed(path):
print(f"Directory changed: {path}")
# Set callback functions
app.set_file_change_callback(on_file_changed)
app.set_directory_change_callback(on_directory_changed)
# Check watched paths
print("Watched paths:", app.get_watched_paths())
print("Watched files:", app.get_watched_files())
print("Watched directories:", app.get_watched_directories())
# Stop watching a specific path
app.stop_watching("/path/to/file1.txt")
app.stop_watching("/path/to/file2.txt")
app.stop_watching("/path/to/file3.txt")
app.stop_watching("/path/to/file4.txt")
app.stop_watching("/path/to/directory1")
app.stop_watching("/path/to/directory2")
app.stop_watching("/path/to/directory3")
app.stop_watching("/path/to/directory4")
# Remove all watched paths
app.remove_all_watched_paths()
Precautions
The File Watcher uses system resources, so use it only when necessary and clean up properly when finished.
Watching a large number of files or directories can impact system performance, so use caution.
Some file systems or operating systems may not detect certain types of changes.
This guide should help you understand the basic usage and advanced features of the File Watcher. If you have any additional questions or need further assistance, please don't hesitate to ask.
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