update

src/util_env.rs

@@ -2,8 +2,5 @@
 use std::env;
 
 pub fn is_env_on(var: &str) -> bool {
-    match env::var(var) {
-        Err(_) => false,
-        Ok(v) => (v == "TRUE" || v == "true" || v =="YES" || v == "yes" || v == "1"),
-    }
+    env::var(var).map(|v| v.to_lowercase()).map(|v| (v == "true" || v == "yes" || v == "1")).unwrap_or(false)
 }

src/util_file.rs

@@ -6,17 +6,15 @@ use std::{
 };
 
 use super::{
+    iff,
     util_os,
+    util_io,
     new_box_ioerror,
     XResult,
 };
 
 pub fn get_home_str() -> Option<String> {
-    if util_os::is_macos_or_linux() {
-        env::var("HOME").ok()
-    } else {
-        None
-    }
+    iff!(util_os::is_macos_or_linux(), env::var("HOME").ok(), None)
 }
 
 pub fn get_home_path() -> Option<PathBuf> {
@@ -24,19 +22,22 @@ pub fn get_home_path() -> Option<PathBuf> {
 }
 
 pub fn get_absolute_path(path: &str) -> Option<PathBuf> {
-    if path == "~" {
-        return Some(PathBuf::from(get_home_str()?));
-    } else if path.starts_with("~/") {
-        return Some(PathBuf::from(&format!("{}/{}", get_home_str()?, &path[2..])));
+    match path {
+        "~" => Some(PathBuf::from(get_home_str()?)),
+        path if path.starts_with("~/")  => Some(PathBuf::from(&format!("{}/{}", get_home_str()?, &path[2..]))),
+        path => fs::canonicalize(path).ok(),
+    }
+}
+
+pub fn read_file_content(file: &str) -> XResult<String> {
+    match get_absolute_path(file) {
+        None => return Err(new_box_ioerror(&format!("File not found: {}", file))),
+        Some(p) => util_io::read_to_string(&mut fs::File::open(p)?),
     }
-    fs::canonicalize(path).ok()
 }
 
 pub fn is_symlink(path: &Path) -> bool {
-    match path.symlink_metadata() {
-        Err(_) => false,
-        Ok(meta) => meta.file_type().is_symlink(),
-    }
+    path.symlink_metadata().map(|meta| meta.file_type().is_symlink()).unwrap_or(false)
 }
 
 pub fn walk_dir<FError, FProcess, FFilter>(dir: &Path,
@@ -60,19 +61,17 @@ fn walk_dir_with_depth_check<FError, FProcess, FFilter>(depth: &mut u32, dir: &P
         return Err(new_box_ioerror(&format!("Depth exceed, depth: {}, path: {:?}", *depth, dir)));
     }
     let read_dir = match dir.read_dir() {
-        Err(err) => {
+        Ok(rd) => rd, Err(err) => {
             func_walk_error(&dir, Box::new(err));
             return Ok(());
         },
-        Ok(rd) => rd,
     };
     for dir_entry_item in read_dir {
         let dir_entry = match dir_entry_item {
-            Err(err) => {
+            Ok(item) => item, Err(err) => {
                 func_walk_error(&dir, Box::new(err));
                 continue; // Ok?
             },
-            Ok(item) => item,
         };
 
         let path_buf = dir_entry.path();