1 files changed, 41 insertions, 0 deletions
diff --git a/src/errors/file_error.rs b/src/errors/file_error.rs
new file mode 100644
index 0000000..e601f94
--- /dev/null
+++ b/src/errors/file_error.rs
@@ -0,0 +1,41 @@
+pub use std::path::{Path, PathBuf};
+
+
+pub enum FileError {
+    InvalidExtension,
+    NotFound,
+    NotReadable,
+    IsADirectory,
+    InvalidUtf8,
+    Unknown,
+}
+
+impl std::fmt::Debug for FileError {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
+        let message = match self {
+            Self::InvalidExtension => "File has invalid extension",
+            Self::NotFound => "File was not found",
+            Self::InvalidUtf8 => "File does not contain valid UTF-8 text",
+            Self::NotReadable => "File is not readable",
+            Self::IsADirectory => "File is a directory",
+            Self::Unknown => "Unknown error while attempting to read from path",
+        };
+        write!(f, "{message}")
+    }
+}
+
+
+pub fn read_file(path: &Path) -> Result<String, FileError> {
+    match std::fs::read(&path) {
+        Ok(bytes) => match String::from_utf8(bytes) {
+            Ok(source) => Ok(source),
+            Err(_) => return Err(FileError::InvalidUtf8),
+        }
+        Err(err) => return Err( match err.kind() {
+            std::io::ErrorKind::NotFound => FileError::NotFound,
+            std::io::ErrorKind::PermissionDenied => FileError::NotReadable,
+            std::io::ErrorKind::IsADirectory => FileError::IsADirectory,
+            _ => FileError::Unknown,
+        } )
+    }
+}