moved all crates into seperate folder + related path fixes

crates/editor/src/ui/util.rs

@@ -0,0 +1,59 @@
+use super::ui_error::{FileOpenFailedSnafu, FileWriteFailedSnafu, OutOfBoundsSnafu, UIResult};
+use snafu::{OptionExt, ResultExt};
+use std::{fs::File, io::BufReader, path::Path, slice::SliceIndex};
+
+pub fn is_newline(char_ref: &char) -> bool {
+    let newline_codes = vec!['\u{d}', '\n'];
+
+    newline_codes.contains(char_ref)
+}
+
+// replace slice method that return Option with one that return Result and proper Error
+pub fn slice_get<T>(index: usize, slice: &[T]) -> UIResult<&<usize as SliceIndex<[T]>>::Output> {
+    let elt_ref = slice.get(index).context(OutOfBoundsSnafu {
+        index,
+        collection_name: "Slice",
+        len: slice.len(),
+    })?;
+
+    Ok(elt_ref)
+}
+
+pub fn slice_get_mut<T>(
+    index: usize,
+    slice: &mut [T],
+) -> UIResult<&mut <usize as SliceIndex<[T]>>::Output> {
+    let slice_len = slice.len();
+
+    let elt_ref = slice.get_mut(index).context(OutOfBoundsSnafu {
+        index,
+        collection_name: "Slice",
+        len: slice_len,
+    })?;
+
+    Ok(elt_ref)
+}
+
+pub fn reader_from_path(path: &Path) -> UIResult<BufReader<File>> {
+    match File::open(path) {
+        Ok(file) => Ok(BufReader::new(file)),
+        Err(e) => FileOpenFailedSnafu {
+            path_str: path_to_string(path),
+            err_msg: e.to_string(),
+        }
+        .fail()?,
+    }
+}
+
+pub fn path_to_string(path: &Path) -> String {
+    let mut path_str = String::new();
+    path_str.push_str(&path.to_string_lossy());
+
+    path_str
+}
+
+pub fn write_to_file(path: &Path, content: &str) -> UIResult<()> {
+    std::fs::write(path, content).with_context(|_| FileWriteFailedSnafu {
+        path_str: path_to_string(path),
+    })
+}