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Miscellaneous little optimisations

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- Prefer iter over into_iter where appropriate
- Cut down on cloning
This commit is contained in:
Ben S 2014-12-12 14:06:48 +00:00
parent 4484982734
commit 66339e7a15
6 changed files with 51 additions and 50 deletions
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6
Cargo.lock generated
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@ -4,13 +4,13 @@ version = "0.1.0"
dependencies = [
"ansi_term 0.3.0 (git+https://github.com/ogham/rust-ansi-term.git)",
"natord 1.0.0 (git+https://github.com/lifthrasiir/rust-natord.git)",
"users 0.1.0 (git+https://github.com/ogham/rust-users)",
"users 0.1.0 (git+https://github.com/ogham/rust-users.git)",
]
[[package]]
name = "ansi_term"
version = "0.3.0"
source = "git+https://github.com/ogham/rust-ansi-term.git#4b9ea6cf266053e1a771e75b935b4e54c586c139"
source = "git+https://github.com/ogham/rust-ansi-term.git#e17d8d3dc56526247f88b0f279f90dc46342db49"
[[package]]
name = "natord"
@ -20,5 +20,5 @@ source = "git+https://github.com/lifthrasiir/rust-natord.git#83ebf6e7999fe2646bc
[[package]]
name = "users"
version = "0.1.0"
source = "git+https://github.com/ogham/rust-users#221a1463d3e25acac41615186a1c7fdcf0ad36d7"
source = "git+https://github.com/ogham/rust-users.git#221a1463d3e25acac41615186a1c7fdcf0ad36d7"

4
src/column.rs
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@ -49,8 +49,8 @@ impl Column {
impl Alignment {
pub fn pad_string(&self, string: &String, padding: uint) -> String {
match *self {
Alignment::Left => string.clone() + " ".repeat(padding).as_slice(),
Alignment::Right => " ".repeat(padding) + string.as_slice(),
Alignment::Left => format!("{}{}", string, " ".repeat(padding).as_slice()),
Alignment::Right => format!("{}{}", " ".repeat(padding), string.as_slice()),
}
}
}

2
src/dir.rs
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@ -24,7 +24,7 @@ impl Dir {
let mut files = vec![];
for path in self.contents.iter() {
match File::from_path(path.clone(), Some(self)) {
match File::from_path(path, Some(self)) {
Ok(file) => files.push(file),
Err(e) => println!("{}: {}", path.display(), e),
}

11
src/exa.rs
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@ -56,7 +56,7 @@ fn exa(opts: &Options) {
else {
// May as well reuse the stat result from earlier
// instead of just using File::from_path().
files.push(File::with_stat(stat, path, None));
files.push(File::with_stat(stat, &path, None));
}
}
Err(e) => println!("{}: {}", file, e),
@ -72,7 +72,7 @@ fn exa(opts: &Options) {
view(opts, files);
}
for dir_name in dirs.into_iter() {
for dir_name in dirs.iter() {
if first {
first = false;
}
@ -155,13 +155,12 @@ fn grid_view(across: bool, console_width: uint, files: Vec<File>) {
}
let ref file = files[num];
let file_name = file.name.clone();
let styled_name = file.file_colour().paint(file_name.as_slice()).to_string();
let styled_name = file.file_colour().paint(file.name.as_slice()).to_string();
if x == num_columns - 1 {
print!("{}", styled_name);
}
else {
print!("{}", Left.pad_string(&styled_name, max_column_length - file_name.len() + 1));
print!("{}", Left.pad_string(&styled_name, max_column_length - file.name.len() + 1));
}
}
print!("\n");
@ -192,7 +191,7 @@ fn details_view(options: &Options, columns: &Vec<Column>, files: Vec<File>) {
// results are cached.
let lengths: Vec<Vec<uint>> = table.iter()
.map(|row| row.iter().map(|col| strip_formatting(col.clone()).len()).collect())
.map(|row| row.iter().map(|col| strip_formatting(col.as_slice()).len()).collect())
.collect();
let column_widths: Vec<uint> = range(0, columns.len())

70
src/file.rs
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@ -1,5 +1,6 @@
use std::io::{fs, IoResult};
use std::io;
use std::str::CowString;
use ansi_term::{ANSIString, Colour, Style};
use ansi_term::Style::Plain;
@ -31,27 +32,27 @@ pub struct File<'a> {
}
impl<'a> File<'a> {
pub fn from_path(path: Path, parent: Option<&'a Dir>) -> IoResult<File<'a>> {
pub fn from_path(path: &Path, parent: Option<&'a Dir>) -> IoResult<File<'a>> {
// Use lstat here instead of file.stat(), as it doesn't follow
// symbolic links. Otherwise, the stat() call will fail if it
// encounters a link that's target is non-existent.
fs::lstat(&path).map(|stat| File::with_stat(stat, path.clone(), parent))
fs::lstat(path).map(|stat| File::with_stat(stat, path, parent))
}
pub fn with_stat(stat: io::FileStat, path: Path, parent: Option<&'a Dir>) -> File<'a> {
pub fn with_stat(stat: io::FileStat, path: &Path, parent: Option<&'a Dir>) -> File<'a> {
let v = path.filename().unwrap(); // fails if / or . or ..
let filename = String::from_utf8(v.to_vec()).unwrap_or_else(|_| panic!("Name was not valid UTF-8"));
let filename = String::from_utf8_lossy(v);
File {
path: path.clone(),
dir: parent,
stat: stat,
name: filename.clone(),
ext: File::ext(filename.clone()),
name: filename.to_string(),
ext: File::ext(filename),
}
}
fn ext(name: String) -> Option<String> {
fn ext(name: CowString) -> Option<String> {
// The extension is the series of characters after a dot at
// the end of a filename. This deliberately also counts
// dotfiles - the ".git" folder has the extension "git".
@ -75,29 +76,30 @@ impl<'a> File<'a> {
// without a .coffee.
pub fn get_source_files(&self) -> Vec<Path> {
if self.ext.is_none() {
return vec![];
if let Some(ref ext) = self.ext {
let ext = ext.as_slice();
match ext {
"class" => vec![self.path.with_extension("java")], // Java
"css" => vec![self.path.with_extension("sass"), self.path.with_extension("less")], // SASS, Less
"elc" => vec![self.path.with_extension("el")], // Emacs Lisp
"hi" => vec![self.path.with_extension("hs")], // Haskell
"js" => vec![self.path.with_extension("coffee"), self.path.with_extension("ts")], // CoffeeScript, TypeScript
"o" => vec![self.path.with_extension("c"), self.path.with_extension("cpp")], // C, C++
"pyc" => vec![self.path.with_extension("py")], // Python
"aux" => vec![self.path.with_extension("tex")], // TeX: auxiliary file
"bbl" => vec![self.path.with_extension("tex")], // BibTeX bibliography file
"blg" => vec![self.path.with_extension("tex")], // BibTeX log file
"lof" => vec![self.path.with_extension("tex")], // TeX list of figures
"log" => vec![self.path.with_extension("tex")], // TeX log file
"lot" => vec![self.path.with_extension("tex")], // TeX list of tables
"toc" => vec![self.path.with_extension("tex")], // TeX table of contents
_ => vec![], // No source files if none of the above
}
}
let ext = self.ext.clone().unwrap();
match ext.as_slice() {
"class" => vec![self.path.with_extension("java")], // Java
"css" => vec![self.path.with_extension("sass"), self.path.with_extension("less")], // SASS, Less
"elc" => vec![self.path.with_extension("el")], // Emacs Lisp
"hi" => vec![self.path.with_extension("hs")], // Haskell
"js" => vec![self.path.with_extension("coffee"), self.path.with_extension("ts")], // CoffeeScript, TypeScript
"o" => vec![self.path.with_extension("c"), self.path.with_extension("cpp")], // C, C++
"pyc" => vec![self.path.with_extension("py")], // Python
"aux" => vec![self.path.with_extension("tex")], // TeX: auxiliary file
"bbl" => vec![self.path.with_extension("tex")], // BibTeX bibliography file
"blg" => vec![self.path.with_extension("tex")], // BibTeX log file
"lof" => vec![self.path.with_extension("tex")], // TeX list of figures
"log" => vec![self.path.with_extension("tex")], // TeX log file
"lot" => vec![self.path.with_extension("tex")], // TeX list of tables
"toc" => vec![self.path.with_extension("tex")], // TeX table of contents
_ => vec![],
else {
vec![] // No source files if there's no extension, either!
}
}
@ -182,7 +184,7 @@ impl<'a> File<'a> {
Some(dir) => dir.path.join(path),
None => path,
};
format!("{} {}", displayed_name, self.target_file_name_and_arrow(target_path))
format!("{} {}", displayed_name, self.target_file_name_and_arrow(&target_path))
}
Err(_) => displayed_name.to_string(),
}
@ -196,16 +198,16 @@ impl<'a> File<'a> {
self.name.as_slice().width(false)
}
fn target_file_name_and_arrow(&self, target_path: Path) -> String {
fn target_file_name_and_arrow(&self, target_path: &Path) -> String {
let v = target_path.filename().unwrap();
let filename = String::from_utf8_lossy(v).to_string();
let filename = String::from_utf8_lossy(v);
// Use stat instead of lstat - we *want* to follow links.
let link_target = fs::stat(&target_path).map(|stat| File {
let link_target = fs::stat(target_path).map(|stat| File {
path: target_path.clone(),
dir: self.dir,
stat: stat,
name: filename.clone(),
name: filename.to_string(),
ext: File::ext(filename.clone()),
});

8
src/filetype.rs
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@ -96,9 +96,8 @@ impl<'a> HasType for File<'a> {
else if name.starts_with("README") || BUILD_TYPES.iter().any(|&s| s == name) {
return Immediate;
}
else if self.ext.is_some() {
let e = self.ext.clone().unwrap().to_ascii_lower();
let ext = e.as_slice();
else if let Some(ref e) = self.ext {
let ext = e.as_slice().to_ascii_lower();
if IMAGE_TYPES.iter().any(|&s| s == ext) {
return Image;
}
@ -125,7 +124,7 @@ impl<'a> HasType for File<'a> {
}
let source_files = self.get_source_files();
if source_files.len() == 0 {
if source_files.is_empty() {
return Normal;
}
else if source_files.iter().any(|path| self.dir.map(|d| d.contains(path)).unwrap_or(false)) {
@ -140,6 +139,7 @@ impl<'a> HasType for File<'a> {
}
}
}
return Normal; // no filetype
}
}