Use a uniform output format for searching ../

closes #107, fixes #82 by the way

src/fshelper/mod.rs

@@ -10,7 +10,7 @@ pub fn path_relative_from(path: &Path, base: &Path) -> Option<PathBuf> {
         if path.is_absolute() {
             Some(PathBuf::from(path))
         } else {
-            None
+            Some(PathBuf::from(base.join(path)))
         }
     } else {
         let mut ita = path.components();

src/main.rs

@@ -16,7 +16,7 @@ mod walk;
 
 use std::env;
 use std::error::Error;
-use std::path::Path;
+use std::path::{Path, PathBuf};
 use std::sync::Arc;
 use std::time;
 
@@ -35,26 +35,16 @@ fn main() {
     let pattern = matches.value_of("pattern").unwrap_or(&empty_pattern);
 
     // Get the current working directory
-    let current_dir_buf = match env::current_dir() {
+    let current_dir = Path::new(".");
-        Ok(cd) => cd,
+    if !current_dir.is_dir() {
-        Err(_) => error("Error: could not get current directory."),
+        error("Error: could not get current directory.");
-    };
+    }
-    let current_dir = current_dir_buf.as_path();
 
     // Get the root directory for the search
-    let mut root_dir_is_absolute = false;
+    let mut root_dir_buf = match matches.value_of("path") {
-    let root_dir_buf = if let Some(rd) = matches.value_of("path") {
+        Some(path) => PathBuf::from(path),
-        let path = Path::new(rd);
+        None => current_dir.to_path_buf(),
-
-        root_dir_is_absolute = path.is_absolute();
-
-        fshelper::absolute_path(path).unwrap_or_else(|_| {
-            error(&format!("Error: could not find directory '{}'.", rd))
-        })
-    } else {
-        current_dir_buf.clone()
     };
-
     if !root_dir_buf.is_dir() {
         error(&format!(
             "Error: '{}' is not a directory.",
@@ -62,6 +52,15 @@ fn main() {
         ));
     }
 
+    let path_display = if matches.is_present("absolute-path") || root_dir_buf.is_absolute() {
+        PathDisplay::Absolute
+    } else {
+        PathDisplay::Relative
+    };
+
+    if path_display == PathDisplay::Absolute && root_dir_buf.is_relative() {
+        root_dir_buf = fshelper::absolute_path(root_dir_buf.as_path()).unwrap();
+    }
     let root_dir = root_dir_buf.as_path();
 
     // The search will be case-sensitive if the command line flag is set or
@@ -109,11 +108,7 @@ fn main() {
             .value_of("max-buffer-time")
             .and_then(|n| u64::from_str_radix(n, 10).ok())
             .map(time::Duration::from_millis),
-        path_display: if matches.is_present("absolute-path") || root_dir_is_absolute {
+        path_display: path_display,
-            PathDisplay::Absolute
-        } else {
-            PathDisplay::Relative
-        },
         ls_colors: ls_colors,
         file_type: match matches.value_of("file-type") {
             Some("f") | Some("file") => FileType::RegularFile,
@@ -127,17 +122,21 @@ fn main() {
         }),
     };
 
-    let root = Path::new(ROOT_DIR);
+    // If base_dir is ROOT_DIR, then root_dir must be absolute.
-    let base = match config.path_display {
+    // Otherwise root_dir/entry cannot be turned into an existing relative path from base_dir.
-        PathDisplay::Relative => current_dir,
+    //
-        PathDisplay::Absolute => root,
+    // We utilize ROOT_DIR to avoid resolving parent directories the root_dir.
+    let base_dir_buf = match config.path_display {
+        PathDisplay::Relative => current_dir.to_path_buf(),
+        PathDisplay::Absolute => PathBuf::from(ROOT_DIR),
     };
+    let base_dir = base_dir_buf.as_path();
 
     match RegexBuilder::new(pattern)
         .case_insensitive(!config.case_sensitive)
         .dot_matches_new_line(true)
         .build() {
-        Ok(re) => walk::scan(root_dir, Arc::new(re), base, Arc::new(config)),
+        Ok(re) => walk::scan(root_dir, Arc::new(re), base_dir, Arc::new(config)),
         Err(err) => error(err.description()),
     }
 }

src/output.rs

@@ -11,7 +11,11 @@ use std::os::unix::fs::PermissionsExt;
 use ansi_term;
 
 pub fn print_entry(base: &Path, entry: &PathBuf, config: &FdOptions) {
-    let path_full = base.join(entry);
+    let path_full = if !entry.as_os_str().is_empty() {
+        base.join(entry)
+    } else {
+        base.to_path_buf()
+    };
 
     let path_to_print = if config.path_display == PathDisplay::Absolute {
         &path_full

src/walk.rs

@@ -2,7 +2,7 @@ use internal::{error, FdOptions};
 use fshelper;
 use output;
 
-use std::path::{Path, PathBuf};
+use std::path::Path;
 use std::sync::Arc;
 use std::sync::mpsc::channel;
 use std::thread;
@@ -153,15 +153,11 @@ pub fn scan(root: &Path, pattern: Arc<Regex>, base: &Path, config: Arc<FdOptions
 
             if let Some(search_str) = search_str_o {
                 pattern.find(&*search_str).map(|_| {
-                    let mut path_rel_buf = match fshelper::path_relative_from(entry_path, &*base) {
+                    let path_rel_buf = match fshelper::path_relative_from(entry_path, &*base) {
                         Some(p) => p,
                         None => error("Error: could not get relative path for directory entry."),
                     };
 
-                    if path_rel_buf == PathBuf::new() {
-                        path_rel_buf.push(".");
-                    }
-
                     // TODO: take care of the unwrap call
                     tx_thread.send(path_rel_buf.to_owned()).unwrap()
                 });

tests/tests.rs

@@ -4,6 +4,20 @@ mod testenv;
 
 use testenv::TestEnv;
 
+fn get_absolute_root_path(env: &TestEnv) -> String {
+    let path = env.root()
+        .canonicalize()
+        .expect("absolute path")
+        .to_str()
+        .expect("string")
+        .to_string();
+
+    #[cfg(windows)]
+    let path = path.trim_left_matches(r"\\?\").to_string();
+
+    path
+}
+
 /// Simple tests
 #[test]
 fn test_simple() {
@@ -62,21 +76,21 @@ fn test_explicit_root_path() {
         "one/two",
         &["foo", "../../"],
         "../../a.foo
-        ../b.foo
+        ../../one/b.foo
-        c.foo
+        ../../one/two/c.foo
-        C.Foo2
+        ../../one/two/C.Foo2
-        three/d.foo
+        ../../one/two/three/d.foo
-        three/directory_foo",
+        ../../one/two/three/directory_foo",
     );
 
     te.assert_output_subdirectory(
         "one/two/three",
         &["", ".."],
-        ".
+        "../c.foo
-        ../c.foo
         ../C.Foo2
-        d.foo
+        ../three
-        directory_foo",
+        ../three/d.foo
+        ../three/directory_foo",
     );
 }
 
@@ -314,15 +328,7 @@ fn test_max_depth() {
 fn test_absolute_path() {
     let te = TestEnv::new();
 
-    let abs_path = te.root()
+    let abs_path = get_absolute_root_path(&te);
-        .canonicalize()
-        .expect("absolute path")
-        .to_str()
-        .expect("string")
-        .to_string();
-
-    #[cfg(windows)]
-    let abs_path = abs_path.trim_left_matches(r"\\?\");
 
     te.assert_output(
         &["--absolute-path"],
@@ -416,3 +422,64 @@ fn test_extension() {
 
     te.assert_output(&["--extension", "foo2"], "one/two/C.Foo2");
 }
+
+/// Symlinks misc
+#[test]
+fn test_symlink() {
+    let te = TestEnv::new();
+
+    let abs_path = get_absolute_root_path(&te);
+
+    // From: http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html
+    // The getcwd() function shall place an absolute pathname of the current working directory in
+    // the array pointed to by buf, and return buf. The pathname shall contain no components that
+    // are dot or dot-dot, or are symbolic links.
+    //
+    // Symlinks on Unix are aliases to real paths, only has one redirection.
+    //
+    // Symlinks on Windows can refer to symlinks, and are resolved after logical step "..".
+
+    let parent_parent = if cfg!(windows) { ".." } else { "../.." };
+    te.assert_output_subdirectory(
+        "symlink",
+        &["", &parent_parent],
+        &format!(
+            "{dir}/a.foo
+            {dir}/one
+            {dir}/one/b.foo
+            {dir}/one/two
+            {dir}/one/two/c.foo
+            {dir}/one/two/C.Foo2
+            {dir}/one/two/three
+            {dir}/one/two/three/d.foo
+            {dir}/one/two/three/directory_foo
+            {dir}/symlink",
+            dir = &parent_parent
+        ),
+    );
+
+    te.assert_output_subdirectory(
+        "symlink",
+        &["--absolute-path"],
+        &format!(
+            "{abs_path}/one/two/c.foo
+            {abs_path}/one/two/C.Foo2
+            {abs_path}/one/two/three
+            {abs_path}/one/two/three/d.foo
+            {abs_path}/one/two/three/directory_foo",
+            abs_path = abs_path
+        ),
+    );
+
+    te.assert_output(
+        &["", &format!("{abs_path}/symlink", abs_path = abs_path)],
+        &format!(
+            "{abs_path}/symlink/c.foo
+            {abs_path}/symlink/C.Foo2
+            {abs_path}/symlink/three
+            {abs_path}/symlink/three/d.foo
+            {abs_path}/symlink/three/directory_foo",
+            abs_path = abs_path
+        ),
+    );
+}