Documentation
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Index ¶
- func AppendToFile(filePath string, content ...string) error
- func GetAllFileNamesInDirectory(directoryPath string) (map[string]string, error)
- func GetFilesEndingIn(directoryPath string, extensions ...string) ([]string, error)
- func MediaDownloader(dest, url string) (string, error)
- func ReadWholeFileLineByLine(path string) ([]string, error)
- func SplitPath(filePath string) []string
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func AppendToFile ¶
AppendToFile is a function that appends content to a file. It takes two parameters: filePath, which is a string representing the path to the file, and content, which is a variadic parameter of strings representing the content to be appended. The function returns an error if it fails to open the file or write to it.
The function first attempts to open the file at the given filePath in append and write-only mode. If it fails to open the file, it returns an error wrapped with a message indicating that it could not open the file.
If the file is opened successfully, the function defers the closing of the file to ensure that it is closed when the function returns, either normally or due to a panic.
The function then attempts to write the content to the file. The content strings are joined with a newline character ("\n") in between each string. If it fails to write to the file, it returns an error wrapped with a message indicating that it could not write to the file.
If the function succeeds in writing to the file, it returns nil, indicating that no errors occurred.
func GetAllFileNamesInDirectory ¶
GetAllFileNamesInDirectory is a function that retrieves all file names in a given directory and their extensions. It takes a parameter, directoryPath, which is a string representing the path to the directory. The function returns a map where the keys are the file paths and the values are the file extensions, and an error if it fails to read the directory or any of its files.
The function first initializes an empty map, fileExtensionMap, to store the file paths and their extensions.
The function then calls the filepath.Walk function to traverse the directory tree. filepath.Walk takes a root path and a function to be called for each file or directory in the tree. The function passed to filepath.Walk takes the current path, the file or directory info, and an error as parameters. If an error occurs while retrieving the info for a file or directory, the function returns the error to filepath.Walk, which stops the walk and returns the error. If the info indicates that the current path is a file (not a directory), the function adds the file path and its extension to fileExtensionMap.
If filepath.Walk returns an error, the function wraps the error with a message indicating that it could not read the directory and returns the wrapped error.
If filepath.Walk does not return an error, the function returns fileExtensionMap and nil, indicating that no errors occurred.
func GetFilesEndingIn ¶
GetFilesEndingIn is a function that retrieves all files in a given directory that have a specified extension. It takes two parameters: directoryPath, which is a string representing the path to the directory, and extensions, which is a variadic parameter of strings representing the file extensions to match. The function returns a slice of strings representing the paths to the matching files, and an error if it fails to read the directory.
The function first initializes an empty slice, matchingFiles, to store the paths to the matching files.
The function then attempts to read the directory at the given directoryPath. If it fails to read the directory, it returns nil and an error wrapped with a message indicating that it could not read the directory.
If the directory is read successfully, the function iterates over the entries in the directory. For each entry, the function checks if the entry is not a directory and if its extension is in the list of extensions to match. If both conditions are true, the function appends the path to the file to matchingFiles. The path is constructed by joining the directoryPath and the name of the entry.
After all entries have been processed, the function returns matchingFiles and nil, indicating that no errors occurred.
func MediaDownloader ¶
MediaDownloader downloads a file from the given URL and saves it to the specified destination. The name of the file is extracted from the URL. If the file already exists at the destination, the function returns the path to the existing file. If the file does not exist, the function checks if the file exists on the server. If the file exists on the server, the function downloads the file and saves it to the destination. The function returns the path to the downloaded file, or an error if the download fails.
dest is the directory where the file will be saved. url is the URL of the file to download.
Example:
file_path, err := MediaDownloader("/path/to/destination", "http://example.com/file.mp3")
if err != nil {
log.Fatal(err)
}
fmt.Println(file_path) // Output: /path/to/destination/file.mp3
func ReadWholeFileLineByLine ¶
ReadWholeFileLineByLine reads a file from the provided path line by line and returns a slice of strings, where each string represents a line from the file. If an error occurs while opening the file, the function returns the error and a nil slice.
Parameters:
- path: The path to the file to be read.
Returns:
- A slice of strings where each string is a line from the file.
- An error if one occurred while opening or scanning the file.
func SplitPath ¶ added in v0.2.3
SplitPath splits a file path into its components. It takes a file path as a string and returns a slice of strings. The function iterates over the file path, splitting it into parts. Each part is added to the parts slice. If a part is not empty, it is appended to the parts slice. After all parts have been added, the parts slice is reversed to ensure the parts are in the correct order. The function then returns the parts slice.
Types ¶
This section is empty.
Source Files