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Merge pull request #553 from kwantam/master

more feature cleanup ; fix more utils
This commit is contained in:
Heather 2015-04-29 09:32:52 +03:00
commit 1a6f8105e3
12 changed files with 541 additions and 323 deletions

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@ -1,5 +1,5 @@
#![crate_name = "base64"]
#![feature(box_syntax, rustc_private)]
#![feature(rustc_private)]
/*
* This file is part of the uutils coreutils package.
@ -80,11 +80,11 @@ pub fn uumain(args: Vec<String>) -> i32 {
let mut file_buf;
let mut input = if matches.free.is_empty() || &matches.free[0][..] == "-" {
stdin_buf = stdin();
BufReader::new(box stdin_buf as Box<Read+'static>)
BufReader::new(Box::new(stdin_buf) as Box<Read+'static>)
} else {
let path = Path::new(&matches.free[0][..]);
file_buf = safe_unwrap!(File::open(&path));
BufReader::new(box file_buf as Box<Read+'static>)
BufReader::new(Box::new(file_buf) as Box<Read+'static>)
};
match mode {

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@ -1,5 +1,5 @@
#![crate_name = "cat"]
#![feature(rustc_private, box_syntax, unsafe_destructor)]
#![feature(rustc_private, unsafe_destructor)]
/*
* This file is part of the uutils coreutils package.
@ -261,11 +261,11 @@ fn open(path: &str) -> Option<(Box<Read>, bool)> {
if path == "-" {
let stdin = stdin();
let interactive = unsafe { isatty(STDIN_FILENO) } != 0 as c_int;
return Some((box stdin as Box<Read>, interactive));
return Some((Box::new(stdin) as Box<Read>, interactive));
}
match File::open(path) {
Ok(f) => Some((box f as Box<Read>, false)),
Ok(f) => Some((Box::new(f) as Box<Read>, false)),
Err(e) => {
(writeln!(&mut stderr(), "cat: {0}: {1}", path, e.to_string())).unwrap();
None

1
src/expand/deps.mk Normal file
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@ -0,0 +1 @@
DEPLIBS += unicode-width

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@ -1,22 +1,28 @@
#![crate_name = "expand"]
#![feature(collections, core, old_io, old_path, rustc_private)]
#![feature(rustc_private, unicode)]
/*
* This file is part of the uutils coreutils package.
*
* (c) Virgile Andreani <virgile.andreani@anbuco.fr>
* (c) kwantam <kwantam@gmail.com>
* 20150428 updated to work with both UTF-8 and non-UTF-8 encodings
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
#![feature(box_syntax)]
extern crate getopts;
extern crate libc;
extern crate rustc_unicode;
extern crate unicode_width;
use std::old_io as io;
use std::str::StrExt;
use std::fs::File;
use std::io::{stdin, stdout, BufRead, BufReader, BufWriter, Read, Write};
use std::iter::repeat;
use std::str::from_utf8;
use rustc_unicode::str::utf8_char_width;
use unicode_width::UnicodeWidthChar;
#[path = "../common/util.rs"]
#[macro_use]
@ -28,7 +34,7 @@ static VERSION: &'static str = "0.0.1";
static DEFAULT_TABSTOP: usize = 8;
fn tabstops_parse(s: String) -> Vec<usize> {
let words = s.as_slice().split(',').collect::<Vec<&str>>();
let words = s.split(',').collect::<Vec<&str>>();
let nums = words.into_iter()
.map(|sn| sn.parse::<usize>()
@ -52,7 +58,9 @@ fn tabstops_parse(s: String) -> Vec<usize> {
struct Options {
files: Vec<String>,
tabstops: Vec<usize>,
iflag: bool
tspaces: String,
iflag: bool,
uflag: bool,
}
impl Options {
@ -63,6 +71,16 @@ impl Options {
};
let iflag = matches.opt_present("i");
let uflag = !matches.opt_present("U");
// avoid allocations when dumping out long sequences of spaces
// by precomputing the longest string of spaces we will ever need
let nspaces = tabstops.iter().scan(0, |pr,&it| {
let ret = Some(it - *pr);
*pr = it;
ret
}).max().unwrap(); // length of tabstops is guaranteed >= 1
let tspaces = repeat(' ').take(nspaces).collect();
let files =
if matches.free.is_empty() {
@ -71,7 +89,7 @@ impl Options {
matches.free
};
Options { files: files, tabstops: tabstops, iflag: iflag }
Options { files: files, tabstops: tabstops, tspaces: tspaces, iflag: iflag, uflag: uflag }
}
}
@ -80,20 +98,21 @@ pub fn uumain(args: Vec<String>) -> i32 {
getopts::optflag("i", "initial", "do not convert tabs after non blanks"),
getopts::optopt("t", "tabs", "have tabs NUMBER characters apart, not 8", "NUMBER"),
getopts::optopt("t", "tabs", "use comma separated list of explicit tab positions", "LIST"),
getopts::optflag("U", "no-utf8", "interpret input file as 8-bit ASCII rather than UTF-8"),
getopts::optflag("h", "help", "display this help and exit"),
getopts::optflag("V", "version", "output version information and exit"),
];
let matches = match getopts::getopts(args.tail(), &opts) {
let matches = match getopts::getopts(&args[1..], &opts) {
Ok(m) => m,
Err(f) => crash!(1, "{}", f)
};
if matches.opt_present("help") {
println!("Usage: {} [OPTION]... [FILE]...", NAME);
io::print(getopts::usage(
println!("{}", getopts::usage(
"Convert tabs in each FILE to spaces, writing to standard output.\n\
With no FILE, or when FILE is -, read standard input.", &opts).as_slice());
With no FILE, or when FILE is -, read standard input.", &opts));
return 0;
}
@ -107,64 +126,119 @@ pub fn uumain(args: Vec<String>) -> i32 {
return 0;
}
fn open(path: String) -> io::BufferedReader<Box<Reader+'static>> {
fn open(path: String) -> BufReader<Box<Read+'static>> {
let mut file_buf;
if path.as_slice() == "-" {
io::BufferedReader::new(box io::stdio::stdin_raw() as Box<Reader>)
if path == "-" {
BufReader::new(Box::new(stdin()) as Box<Read>)
} else {
file_buf = match io::File::open(&Path::new(path.as_slice())) {
file_buf = match File::open(&path[..]) {
Ok(a) => a,
_ => crash!(1, "{}: {}\n", path, "No such file or directory")
Err(e) => crash!(1, "{}: {}\n", &path[..], e),
};
io::BufferedReader::new(box file_buf as Box<Reader>)
BufReader::new(Box::new(file_buf) as Box<Read>)
}
}
fn to_next_stop(tabstops: &[usize], col: usize) -> usize {
match tabstops.as_slice() {
[tabstop] => tabstop - col % tabstop,
tabstops => match tabstops.iter().skip_while(|&t| *t <= col).next() {
Some(&tabstop) => tabstop - col % tabstop,
None => 1
fn next_tabstop(tabstops: &[usize], col: usize) -> usize {
if tabstops.len() == 1 {
tabstops[0] - col % tabstops[0]
} else {
match tabstops.iter().skip_while(|&&t| t <= col).next() {
Some(t) => t - col,
None => 1,
}
}
}
#[derive(PartialEq, Eq, Debug)]
enum CharType {
Backspace,
Tab,
Other,
}
fn expand(options: Options) {
let mut output = io::stdout();
use self::CharType::*;
let mut output = BufWriter::new(stdout());
let ts = options.tabstops.as_ref();
let mut buf = Vec::new();
for file in options.files.into_iter() {
let mut fh = open(file);
while match fh.read_until('\n' as u8, &mut buf) {
Ok(s) => s > 0,
Err(_) => buf.len() > 0,
} {
let mut col = 0;
let mut byte = 0;
let mut init = true;
for c in open(file).chars() {
match c {
Ok('\t') if init || !options.iflag => {
let nb_spaces = to_next_stop(options.tabstops.as_slice(), col);
col += nb_spaces;
safe_write!(&mut output, "{:1$}", "", nb_spaces);
while byte < buf.len() {
let (ctype, cwidth, nbytes) = if options.uflag {
let nbytes = utf8_char_width(buf[byte]);
if byte + nbytes > buf.len() {
// don't overrun buffer because of invalid UTF-8
(Other, 1, 1)
} else if let Ok(t) = from_utf8(&buf[byte..byte+nbytes]) {
match t.chars().next() {
Some('\t') => (Tab, 0, nbytes),
Some('\x08') => (Backspace, 0, nbytes),
Some(c) => (Other, UnicodeWidthChar::width(c).unwrap_or(0), nbytes),
None => { // no valid char at start of t, so take 1 byte
(Other, 1, 1)
},
}
Ok('\x08') => {
if col > 0 {
col -= 1;
} else {
(Other, 1, 1) // implicit assumption: non-UTF-8 char is 1 col wide
}
init = false;
safe_write!(&mut output, "{}", '\x08');
} else {
(match buf[byte] { // always take exactly 1 byte in strict ASCII mode
0x09 => Tab,
0x08 => Backspace,
_ => Other,
}, 1, 1)
};
// figure out how many columns this char takes up
match ctype {
Tab => {
// figure out how many spaces to the next tabstop
let nts = next_tabstop(ts, col);
col += nts;
// now dump out either spaces if we're expanding, or a literal tab if we're not
if init || !options.iflag {
safe_unwrap!(output.write_all(&options.tspaces[..nts].as_bytes()));
} else {
safe_unwrap!(output.write_all(&buf[byte..byte+nbytes]));
}
Ok('\n') => {
col = 0;
init = true;
safe_write!(&mut output, "{}", '\n');
}
Ok(c) => {
col += 1;
if c != ' ' {
},
_ => {
col = if ctype == Other {
col + cwidth
} else if col > 0 {
col - 1
} else {
0
};
// if we're writing anything other than a space, then we're
// done with the line's leading spaces
if buf[byte] != 0x20 {
init = false;
}
safe_write!(&mut output, "{}", c);
safe_unwrap!(output.write_all(&buf[byte..byte+nbytes]));
},
}
Err(_) => break
byte += nbytes; // advance the pointer
}
buf.truncate(0); // clear the buffer
}
}
}

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@ -1,5 +1,5 @@
#![crate_name = "fmt"]
#![feature(box_syntax,rustc_private,str_char,unicode,core)]
#![feature(rustc_private,str_char,unicode,core)]
/*
* This file is part of `fmt` from the uutils coreutils package.
@ -197,9 +197,9 @@ pub fn uumain(args: Vec<String>) -> i32 {
for i in files.iter().map(|x| &x[..]) {
let mut fp = match i {
"-" => BufReader::new(box stdin() as Box<Read+'static>),
"-" => BufReader::new(Box::new(stdin()) as Box<Read+'static>),
_ => match File::open(i) {
Ok(f) => BufReader::new(box f as Box<Read+'static>),
Ok(f) => BufReader::new(Box::new(f) as Box<Read+'static>),
Err(e) => {
show_warning!("{}: {}", i, e);
continue;

117
src/tr/expand.rs Normal file
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@ -0,0 +1,117 @@
/*
* This file is part of the uutils coreutils package.
*
* (c) Michael Gehring <mg@ebfe.org>
* (c) kwantam <kwantam@gmail.com>
* 20150428 created `expand` module to eliminate most allocs during setup
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
use std::char::from_u32;
use std::cmp::min;
use std::iter::Peekable;
use std::ops::Range;
#[inline]
fn unescape_char(c: char) -> char {
match c {
'a' => 0x07u8 as char,
'b' => 0x08u8 as char,
'f' => 0x0cu8 as char,
'v' => 0x0bu8 as char,
'n' => '\n',
'r' => '\r',
't' => '\t',
_ => c,
}
}
struct Unescape<'a> {
string: &'a str,
}
impl<'a> Iterator for Unescape<'a> {
type Item = char;
#[inline]
fn size_hint(&self) -> (usize, Option<usize>) {
let slen = self.string.len();
(min(slen, 1), None)
}
#[inline]
fn next(&mut self) -> Option<Self::Item> {
if self.string.len() == 0 {
return None;
}
// is the next character an escape?
let (ret, idx) = match self.string.chars().next().unwrap() {
'\\' if self.string.len() > 1 => {
// yes---it's \ and it's not the last char in a string
// we know that \ is 1 byte long so we can index into the string safely
let c = self.string[1..].chars().next().unwrap();
(Some(unescape_char(c)), 1 + c.len_utf8())
},
c => (Some(c), c.len_utf8()), // not an escape char
};
self.string = &self.string[idx..]; // advance the pointer to the next char
ret
}
}
pub struct ExpandSet<'a> {
range: Range<u32>,
unesc: Peekable<Unescape<'a>>,
}
impl<'a> Iterator for ExpandSet<'a> {
type Item = char;
#[inline]
fn size_hint(&self) -> (usize, Option<usize>) {
self.unesc.size_hint()
}
#[inline]
fn next(&mut self) -> Option<Self::Item> {
// while the Range has elements, try to return chars from it
// but make sure that they actually turn out to be Chars!
while let Some(n) = self.range.next() {
match from_u32(n) {
Some(c) => return Some(c),
_ => (),
}
}
if let Some(first) = self.unesc.next() {
// peek ahead
if self.unesc.peek() == Some(&'-') && match self.unesc.size_hint() {
(x, _) if x > 1 => true, // there's a range here; record it in our internal Range struct
_ => false,
} {
self.unesc.next(); // this is the '-'
let last = self.unesc.next().unwrap(); // this is the end of the range
self.range = first as u32 + 1 .. last as u32 + 1;
}
return Some(first); // in any case, return the next char
}
None
}
}
impl<'a> ExpandSet<'a> {
#[inline]
pub fn new(s: &'a str) -> ExpandSet<'a> {
ExpandSet {
range: 0 .. 0,
unesc: Unescape { string: s }.peekable(),
}
}
}

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@ -1,98 +1,40 @@
#![crate_name = "tr"]
#![feature(collections, core, old_io, rustc_private)]
#![feature(io, rustc_private)]
/*
* This file is part of the uutils coreutils package.
*
* (c) Michael Gehring <mg@ebfe.org>
* (c) kwantam <kwantam@gmail.com>
* 20150428 created `expand` module to eliminate most allocs during setup
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
extern crate collections;
extern crate getopts;
use getopts::OptGroup;
use std::char::from_u32;
use std::collections::{BitSet, VecMap};
use std::old_io::{BufferedReader, print};
use std::old_io::stdio::{stdin_raw, stdout};
use std::iter::FromIterator;
use std::vec::Vec;
use std::io::{stdin, stdout, BufReader, Read, Write};
use expand::ExpandSet;
#[path="../common/util.rs"]
#[macro_use]
mod util;
mod expand;
static NAME : &'static str = "tr";
static VERSION : &'static str = "1.0.0";
const BUFFER_LEN: usize = 1024;
#[inline]
fn unescape_char(c: char) -> char {
match c {
'a' => 0x07u8 as char,
'b' => 0x08u8 as char,
'f' => 0x0cu8 as char,
'v' => 0x0bu8 as char,
'n' => '\n',
'r' => '\r',
't' => '\t',
_ => c,
}
}
#[inline]
fn unescape(v: Vec<char>) -> Vec<char> {
let mut out = Vec::new();
let mut input = v.as_slice();
loop {
input = match input {
['\\', e, rest..] => {
out.push(unescape_char(e));
rest
}
[c, rest..] => {
out.push(c);
rest
}
[] => break
}
}
out
}
#[inline]
fn expand_range(from: char, to: char) -> Vec<char> {
range(from as u32, to as u32 + 1).map(|c| from_u32(c).unwrap()).collect()
}
fn expand_set(s: &str) -> Vec<char> {
let mut set = Vec::<char>::new();
let unesc = unescape(FromIterator::from_iter(s.chars()));
let mut input = unesc.as_slice();
loop {
input = match input {
[f, '-', t, rest..] => {
set.push_all(expand_range(f, t).as_slice());
rest
}
[c, rest..] => {
set.push(c);
rest
}
[] => break
};
}
set
}
fn delete(set: Vec<char>, complement: bool) {
fn delete<'a>(set: ExpandSet<'a>, complement: bool) {
let mut bset = BitSet::new();
let mut out = stdout();
let mut stdout = stdout();
let mut buf = String::with_capacity(BUFFER_LEN + 4);
for &c in set.iter() {
for c in set {
bset.insert(c as usize);
}
@ -104,42 +46,44 @@ fn delete(set: Vec<char>, complement: bool) {
}
};
for c in BufferedReader::new(stdin_raw()).chars() {
for c in BufReader::new(stdin()).chars() {
match c {
Ok(c) if is_allowed(c) => out.write_char(c).unwrap(),
Ok(c) if is_allowed(c) => buf.push(c),
Ok(_) => (),
Err(err) => panic!("{}", err),
};
if buf.len() >= BUFFER_LEN {
safe_unwrap!(stdout.write_all(&buf[..].as_bytes()));
}
}
if buf.len() > 0 {
safe_unwrap!(stdout.write_all(&buf[..].as_bytes()));
}
}
fn tr(set1: &[char], set2: &[char]) {
const BUFFER_LEN: usize = 1024;
fn tr<'a>(set1: ExpandSet<'a>, mut set2: ExpandSet<'a>) {
let mut map = VecMap::new();
let mut stdout = stdout();
let mut outbuffer = String::with_capacity(BUFFER_LEN);
let mut buf = String::with_capacity(BUFFER_LEN + 4);
let set2_len = set2.len();
for i in range(0, set1.len()) {
if i >= set2_len {
map.insert(set1[i] as usize, set2[set2_len - 1]);
} else {
map.insert(set1[i] as usize, set2[i]);
}
let mut s2_prev = '_';
for i in set1 {
s2_prev = set2.next().unwrap_or(s2_prev);
map.insert(i as usize, s2_prev);
}
for c in BufferedReader::new(stdin_raw()).chars() {
for c in BufReader::new(stdin()).chars() {
match c {
Ok(inc) => {
let trc = match map.get(&(inc as usize)) {
Some(t) => *t,
None => inc,
};
outbuffer.push(trc);
if outbuffer.len() >= BUFFER_LEN {
stdout.write_str(outbuffer.as_slice()).unwrap();
outbuffer.clear();
buf.push(trc);
if buf.len() >= BUFFER_LEN {
safe_unwrap!(stdout.write_all(&buf[..].as_bytes()));
buf.truncate(0);
}
}
Err(err) => {
@ -147,8 +91,8 @@ fn tr(set1: &[char], set2: &[char]) {
}
}
}
if outbuffer.len() > 0 {
stdout.write_str(outbuffer.as_slice()).unwrap();
if buf.len() > 0 {
safe_unwrap!(stdout.write_all(&buf[..].as_bytes()));
}
}
@ -158,7 +102,7 @@ fn usage(opts: &[OptGroup]) {
println!("Usage:");
println!(" {} [OPTIONS] SET1 [SET2]", NAME);
println!("");
print(getopts::usage("Translate or delete characters.", opts).as_slice());
println!("{}", getopts::usage("Translate or delete characters.", opts));
}
pub fn uumain(args: Vec<String>) -> i32 {
@ -170,7 +114,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
getopts::optflag("V", "version", "output version information and exit"),
];
let matches = match getopts::getopts(args.tail(), &opts) {
let matches = match getopts::getopts(&args[1..], &opts) {
Ok(m) => m,
Err(err) => {
show_error!("{}", err);
@ -203,12 +147,12 @@ pub fn uumain(args: Vec<String>) -> i32 {
}
if dflag {
let set1 = expand_set(sets[0].as_slice());
let set1 = ExpandSet::new(sets[0].as_ref());
delete(set1, cflag);
} else {
let set1 = expand_set(sets[0].as_slice());
let set2 = expand_set(sets[1].as_slice());
tr(set1.as_slice(), set2.as_slice());
let set1 = ExpandSet::new(sets[0].as_ref());
let set2 = ExpandSet::new(sets[1].as_ref());
tr(set1, set2);
}
0

1
src/unexpand/deps.mk Normal file
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@ -0,0 +1 @@
DEPLIBS += unicode-width

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@ -1,10 +1,12 @@
#![crate_name = "unexpand"]
#![feature(collections, core, old_io, old_path, rustc_private)]
#![feature(rustc_private, unicode)]
/*
* This file is part of the uutils coreutils package.
*
* (c) Virgile Andreani <virgile.andreani@anbuco.fr>
* (c) kwantam <kwantam@gmail.com>
* 20150428 updated to work with both UTF-8 and non-UTF-8 encodings
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
@ -12,8 +14,14 @@
extern crate getopts;
extern crate libc;
extern crate rustc_unicode;
extern crate unicode_width;
use std::old_io as io;
use std::fs::File;
use std::io::{stdin, stdout, BufRead, BufReader, BufWriter, Read, Stdout, Write};
use std::str::from_utf8;
use rustc_unicode::str::utf8_char_width;
use unicode_width::UnicodeWidthChar;
#[path = "../common/util.rs"]
#[macro_use]
@ -25,7 +33,7 @@ static VERSION: &'static str = "0.0.1";
static DEFAULT_TABSTOP: usize = 8;
fn tabstops_parse(s: String) -> Vec<usize> {
let words = s.as_slice().split(',').collect::<Vec<&str>>();
let words = s.split(',').collect::<Vec<&str>>();
let nums = words.into_iter()
.map(|sn| sn.parse()
@ -49,7 +57,8 @@ fn tabstops_parse(s: String) -> Vec<usize> {
struct Options {
files: Vec<String>,
tabstops: Vec<usize>,
aflag: bool
aflag: bool,
uflag: bool,
}
impl Options {
@ -61,6 +70,7 @@ impl Options {
let aflag = (matches.opt_present("all") || matches.opt_present("tabs"))
&& !matches.opt_present("first-only");
let uflag = !matches.opt_present("U");
let files =
if matches.free.is_empty() {
@ -69,7 +79,7 @@ impl Options {
matches.free
};
Options { files: files, tabstops: tabstops, aflag: aflag }
Options { files: files, tabstops: tabstops, aflag: aflag, uflag: uflag }
}
}
@ -79,20 +89,21 @@ pub fn uumain(args: Vec<String>) -> i32 {
getopts::optflag("", "first-only", "convert only leading sequences of blanks (overrides -a)"),
getopts::optopt("t", "tabs", "have tabs N characters apart instead of 8 (enables -a)", "N"),
getopts::optopt("t", "tabs", "use comma separated LIST of tab positions (enables -a)", "LIST"),
getopts::optflag("U", "no-utf8", "interpret input file as 8-bit ASCII rather than UTF-8"),
getopts::optflag("h", "help", "display this help and exit"),
getopts::optflag("V", "version", "output version information and exit"),
];
let matches = match getopts::getopts(args.tail(), &opts) {
let matches = match getopts::getopts(&args[1..], &opts) {
Ok(m) => m,
Err(f) => crash!(1, "{}", f)
};
if matches.opt_present("help") {
println!("Usage: {} [OPTION]... [FILE]...", NAME);
io::print(getopts::usage(
println!("{}", getopts::usage(
"Convert blanks in each FILE to tabs, writing to standard output.\n\
With no FILE, or when FILE is -, read standard input.", &opts).as_slice());
With no FILE, or when FILE is -, read standard input.", &opts));
return 0;
}
@ -106,121 +117,175 @@ pub fn uumain(args: Vec<String>) -> i32 {
return 0;
}
fn open(path: String) -> io::BufferedReader<Box<Reader+'static>> {
fn open(path: String) -> BufReader<Box<Read+'static>> {
let mut file_buf;
if path.as_slice() == "-" {
io::BufferedReader::new(Box::new(io::stdio::stdin_raw()) as Box<Reader>)
if path == "-" {
BufReader::new(Box::new(stdin()) as Box<Read>)
} else {
file_buf = match io::File::open(&Path::new(path.as_slice())) {
file_buf = match File::open(&path[..]) {
Ok(a) => a,
_ => crash!(1, "{}: {}\n", path, "No such file or directory")
Err(e) => crash!(1, "{}: {}", &path[..], e),
};
io::BufferedReader::new(Box::new(file_buf) as Box<Reader>)
BufReader::new(Box::new(file_buf) as Box<Read>)
}
}
fn is_tabstop(tabstops: &[usize], col: usize) -> bool {
match tabstops {
[tabstop] => col % tabstop == 0,
tabstops => tabstops.binary_search_by(|&e| e.cmp(&col)).is_ok()
fn next_tabstop(tabstops: &[usize], col: usize) -> Option<usize> {
if tabstops.len() == 1 {
Some(tabstops[0] - col % tabstops[0])
} else {
// find next larger tab
match tabstops.iter().skip_while(|&&t| t <= col).next() {
Some(t) => Some(t - col),
None => None, // if there isn't one in the list, tab becomes a single space
}
}
}
fn to_next_stop(tabstops: &[usize], col: usize) -> Option<usize> {
match tabstops {
[tabstop] => Some(tabstop - col % tabstop),
tabstops => tabstops.iter().skip_while(|&t| *t <= col).next()
.map(|&tabstop| tabstop - col % tabstop)
fn write_tabs(mut output: &mut BufWriter<Stdout>, tabstops: &[usize], mut scol: usize, col: usize) {
while let Some(nts) = next_tabstop(tabstops, scol) {
if col < scol + nts {
break;
}
safe_unwrap!(output.write_all("\t".as_bytes()));
scol += nts;
}
while col > scol {
safe_unwrap!(output.write_all(" ".as_bytes()));
scol += 1;
}
}
fn unexpandspan(mut output: &mut io::LineBufferedWriter<io::stdio::StdWriter>,
tabstops: &[usize], nspaces: usize, col: usize, init: bool) {
let mut cur = col - nspaces;
if nspaces > 1 || init {
loop {
match to_next_stop(tabstops, cur) {
Some(to_next) if cur + to_next <= col => {
safe_write!(&mut output, "{}", '\t');
cur += to_next;
}
_ => break
}
}
}
safe_write!(&mut output, "{:1$}", "", col - cur);
#[derive(PartialEq, Eq, Debug)]
enum CharType {
Backspace,
Space,
Tab,
Other,
}
fn unexpand(options: Options) {
let mut output = io::stdout();
let ts = options.tabstops.as_slice();
use self::CharType::*;
let mut output = BufWriter::new(stdout());
let ts = &options.tabstops[..];
let mut buf = Vec::new();
let lastcol = if ts.len() > 1 {
*ts.last().unwrap()
} else {
0
};
for file in options.files.into_iter() {
let mut col = 0;
let mut nspaces = 0;
let mut init = true;
for c in open(file).chars() {
match c {
Ok(' ') => {
if init || options.aflag {
nspaces += 1;
let mut fh = open(file);
while match fh.read_until('\n' as u8, &mut buf) {
Ok(s) => s > 0,
Err(_) => buf.len() > 0,
} {
let mut byte = 0; // offset into the buffer
let mut col = 0; // the current column
let mut scol = 0; // the start col for the current span, i.e., the already-printed width
let mut init = true; // are we at the start of the line?
let mut pctype = Other;
while byte < buf.len() {
// when we have a finite number of columns, never convert past the last column
if lastcol > 0 && col >= lastcol {
if (pctype != Tab && col > scol + 1) ||
(col > scol && (init || pctype == Tab)) {
write_tabs(&mut output, ts, scol, col);
} else if col > scol {
safe_unwrap!(output.write_all(" ".as_bytes()));
}
scol = col;
safe_unwrap!(output.write_all(&buf[byte..]));
break;
}
let (ctype, cwidth, nbytes) = if options.uflag {
let nbytes = utf8_char_width(buf[byte]);
// figure out how big the next char is, if it's UTF-8
if byte + nbytes > buf.len() {
// make sure we don't overrun the buffer because of invalid UTF-8
(Other, 1, 1)
} else if let Ok(t) = from_utf8(&buf[byte..byte+nbytes]) {
// Now that we think it's UTF-8, figure out what kind of char it is
match t.chars().next() {
Some(' ') => (Space, 0, 1),
Some('\t') => (Tab, 0, 1),
Some('\x08') => (Backspace, 0, 1),
Some(c) => (Other, UnicodeWidthChar::width(c).unwrap_or(0), nbytes),
None => { // invalid char snuck past the utf8_validation_iterator somehow???
(Other, 1, 1)
},
}
} else {
nspaces = 0;
safe_write!(&mut output, "{}", ' ');
// otherwise, it's not valid
(Other, 1, 1) // implicit assumption: non-UTF8 char has display width 1
}
col += 1;
} else {
(match buf[byte] { // always take exactly 1 byte in strict ASCII mode
0x20 => Space,
0x09 => Tab,
0x08 => Backspace,
_ => Other,
}, 1, 1)
};
// now figure out how many columns this char takes up, and maybe print it
let tabs_buffered = init || options.aflag;
match ctype {
Space | Tab => { // compute next col, but only write space or tab chars if not buffering
col += if ctype == Space {
1
} else {
next_tabstop(ts, col).unwrap_or(1)
};
if !tabs_buffered {
safe_unwrap!(output.write_all(&buf[byte..byte+nbytes]));
scol = col; // now printed up to this column
}
Ok('\t') if nspaces > 0 => {
if is_tabstop(ts, col) {
nspaces = 0;
col += 1;
safe_write!(&mut output, "{}", '\t');
},
Other | Backspace => { // always
// never turn a single space before a non-blank into a tab
// unless it's at the start of the line
if (tabs_buffered && pctype != Tab && col > scol + 1) ||
(col > scol && (init || (tabs_buffered && pctype == Tab))) {
write_tabs(&mut output, ts, scol, col);
} else if col > scol {
safe_unwrap!(output.write_all(" ".as_bytes()));
}
match to_next_stop(ts, col) {
Some(to_next) => {
nspaces += to_next;
col += to_next;
}
None => {
col += 1;
unexpandspan(&mut output, ts, nspaces, col, init);
nspaces = 0;
safe_write!(&mut output, "{}", '\t');
}
}
}
Ok('\x08') => { // '\b'
if init || options.aflag {
unexpandspan(&mut output, ts, nspaces, col, init)
}
nspaces = 0;
if col > 0 { col -= 1; }
init = false;
safe_write!(&mut output, "{}", '\x08');
col = if ctype == Other { // use computed width
col + cwidth
} else if col > 0 { // Backspace case, but only if col > 0
col - 1
} else {
0
};
safe_unwrap!(output.write_all(&buf[byte..byte+nbytes]));
scol = col; // we've now printed up to this column
},
}
Ok('\n') => {
if init || options.aflag {
unexpandspan(&mut output, ts, nspaces, col, init)
byte += nbytes; // move on to next char
pctype = ctype; // save the previous type
}
nspaces = 0;
col = 0;
init = true;
safe_write!(&mut output, "{}", '\n');
// write out anything remaining
if col > scol + 1 || (init && col > scol) {
write_tabs(&mut output, ts, scol, col);
} else if col > scol {
safe_unwrap!(output.write_all(" ".as_bytes()));
}
Ok(c) => {
if init || options.aflag {
unexpandspan(&mut output, ts, nspaces, col, init)
}
nspaces = 0;
col += 1;
init = false;
safe_write!(&mut output, "{}", c);
}
Err(_) => break
}
}
if init || options.aflag {
unexpandspan(&mut output, ts, nspaces, col, init)
buf.truncate(0); // clear out the buffer
}
}
}

View file

@ -1,5 +1,5 @@
#![crate_name = "unlink"]
#![feature(collections, core, old_io, old_path, rustc_private)]
#![feature(rustc_private)]
/*
* This file is part of the uutils coreutils package.
@ -15,9 +15,14 @@
extern crate getopts;
extern crate libc;
use std::old_io as io;
use std::old_io::fs::{self, PathExtensions};
use std::old_io::print;
use libc::consts::os::posix88::{S_IFMT, S_IFLNK, S_IFREG};
use libc::types::os::arch::c95::c_char;
use libc::types::os::arch::posix01::stat;
use libc::funcs::posix01::stat_::lstat;
use libc::funcs::posix88::unistd::unlink;
use std::mem::uninitialized;
use std::io::{Error, ErrorKind, Write};
#[path = "../common/util.rs"]
#[macro_use]
@ -26,13 +31,12 @@ mod util;
static NAME: &'static str = "unlink";
pub fn uumain(args: Vec<String>) -> i32 {
let program = args[0].clone();
let opts = [
getopts::optflag("h", "help", "display this help and exit"),
getopts::optflag("V", "version", "output version information and exit"),
];
let matches = match getopts::getopts(args.tail(), &opts) {
let matches = match getopts::getopts(&args[1..], &opts) {
Ok(m) => m,
Err(f) => {
crash!(1, "invalid options\n{}", f)
@ -43,9 +47,9 @@ pub fn uumain(args: Vec<String>) -> i32 {
println!("unlink 1.0.0");
println!("");
println!("Usage:");
println!(" {0} [FILE]... [OPTION]...", program);
println!(" {0} [FILE]... [OPTION]...", args[0]);
println!("");
print(getopts::usage("Unlink the file at [FILE].", &opts).as_slice());
println!("{}", getopts::usage("Unlink the file at [FILE].", &opts));
return 0;
}
@ -55,31 +59,38 @@ pub fn uumain(args: Vec<String>) -> i32 {
}
if matches.free.len() == 0 {
crash!(1, "missing operand\nTry '{0} --help' for more information.", program);
crash!(1, "missing operand\nTry '{0} --help' for more information.", args[0]);
} else if matches.free.len() > 1 {
crash!(1, "extra operand: '{1}'\nTry '{0} --help' for more information.", program, matches.free[1]);
crash!(1, "extra operand: '{1}'\nTry '{0} --help' for more information.", args[0], matches.free[1]);
}
let path = Path::new(matches.free[0].clone());
let st_mode = {
let mut buf: stat = unsafe { uninitialized() };
let result = unsafe { lstat(matches.free[0].as_ptr() as *const c_char, &mut buf as *mut stat) };
let result = path.lstat().and_then(|info| {
match info.kind {
io::FileType::RegularFile => Ok(()),
io::FileType::Symlink => Ok(()),
_ => Err(io::IoError {
kind: io::OtherIoError,
desc: "is not a file or symlink",
detail: None
})
if result < 0 {
crash!(1, "Cannot stat '{}': {}", matches.free[0], Error::last_os_error());
}
}).and_then(|_| {
fs::unlink(&path)
});
buf.st_mode & S_IFMT
};
let result = if st_mode != S_IFREG && st_mode != S_IFLNK {
Err(Error::new(ErrorKind::Other, "Not a regular file or symlink"))
} else {
let result = unsafe { unlink(matches.free[0].as_ptr() as *const c_char) };
if result < 0 {
Err(Error::last_os_error())
} else {
Ok(())
}
};
match result {
Ok(_) => (),
Err(e) => {
crash!(1, "cannot unlink '{0}': {1}", path.display(), e.desc);
crash!(1, "cannot unlink '{0}': {1}", matches.free[0], e);
}
}

View file

@ -1,49 +1,51 @@
#![allow(unstable)]
use std::old_io::process::Command;
use std::io::Write;
use std::process::{Command, Stdio};
static PROGNAME: &'static str = "./tr";
fn run(input: &str, args: &[&'static str]) -> Vec<u8> {
let mut process = Command::new(PROGNAME).args(args).spawn().unwrap();
let mut process = Command::new(PROGNAME)
.args(args)
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
.unwrap_or_else(|e| panic!("{}", e));
process.stdin.take().unwrap().write_str(input).unwrap();
process.stdin.take().unwrap_or_else(|| panic!("Could not take child process stdin"))
.write_all(input.as_bytes()).unwrap_or_else(|e| panic!("{}", e));
let po = match process.wait_with_output() {
Ok(p) => p,
Err(err) => panic!("{}", err),
};
po.output
let po = process.wait_with_output().unwrap_or_else(|e| panic!("{}", e));
po.stdout
}
#[test]
fn test_toupper() {
let out = run("!abcd!", &["a-z", "A-Z"]);
assert_eq!(out.as_slice(), b"!ABCD!");
assert_eq!(&out[..], b"!ABCD!");
}
#[test]
fn test_small_set2() {
let out = run("@0123456789", &["0-9", "X"]);
assert_eq!(out.as_slice(), b"@XXXXXXXXXX");
assert_eq!(&out[..], b"@XXXXXXXXXX");
}
#[test]
fn test_unicode() {
let out = run("(,°□°), ┬─┬", &[", ┬─┬", "╯︵┻━┻"]);
assert_eq!(out.as_slice(), "(╯°□°)╯︵┻━┻".as_bytes());
assert_eq!(&out[..], "(╯°□°)╯︵┻━┻".as_bytes());
}
#[test]
fn test_delete() {
let out = run("aBcD", &["-d", "a-z"]);
assert_eq!(out.as_slice(), b"BD");
assert_eq!(&out[..], b"BD");
}
#[test]
fn test_delete_complement() {
let out = run("aBcD", &["-d", "-c", "a-z"]);
assert_eq!(out.as_slice(), b"ac");
assert_eq!(&out[..], b"ac");
}

View file

@ -1,74 +1,76 @@
#![allow(unstable)]
use std::old_io::process::Command;
use std::io::Write;
use std::process::{Command, Stdio};
static PROGNAME: &'static str = "./unexpand";
fn run(input: &str, args: &[&'static str]) -> Vec<u8> {
let mut process = Command::new(PROGNAME).args(args).spawn().unwrap();
let mut process = Command::new(PROGNAME)
.args(args)
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
.unwrap_or_else(|e| panic!("{}", e));
process.stdin.take().unwrap().write_str(input).unwrap();
process.stdin.take().unwrap_or_else(|| panic!("Could not take child process stdin"))
.write_all(input.as_bytes()).unwrap_or_else(|e| panic!("{}", e));
let po = match process.wait_with_output() {
Ok(p) => p,
Err(err) => panic!("{}", err),
};
po.output
let po = process.wait_with_output().unwrap_or_else(|e| panic!("{}", e));
po.stdout
}
#[test]
fn unexpand_init_0() {
let out = run(" 1\n 2\n 3\n 4\n", &["-t4"]);
assert_eq!(out.as_slice(), b" 1\n 2\n 3\n\t4\n");
assert_eq!(&out[..], b" 1\n 2\n 3\n\t4\n" as &[u8]);
}
#[test]
fn unexpand_init_1() {
let out = run(" 5\n 6\n 7\n 8\n", &["-t4"]);
assert_eq!(out.as_slice(), b"\t 5\n\t 6\n\t 7\n\t\t8\n");
assert_eq!(&out[..], b"\t 5\n\t 6\n\t 7\n\t\t8\n" as &[u8]);
}
#[test]
fn unexpand_init_list_0() {
let out = run(" 1\n 2\n 3\n 4\n", &["-t2,4"]);
assert_eq!(out.as_slice(), b" 1\n\t2\n\t 3\n\t\t4\n");
assert_eq!(&out[..], b" 1\n\t2\n\t 3\n\t\t4\n" as &[u8]);
}
#[test]
fn unexpand_init_list_1() {
// Once the list is exhausted, spaces are not converted anymore
let out = run(" 5\n 6\n 7\n 8\n", &["-t2,4"]);
assert_eq!(out.as_slice(), b"\t\t 5\n\t\t 6\n\t\t 7\n\t\t 8\n");
assert_eq!(&out[..], b"\t\t 5\n\t\t 6\n\t\t 7\n\t\t 8\n" as &[u8]);
}
#[test]
fn unexpand_aflag_0() {
let out = run("e E\nf F\ng G\nh H\n", &[]);
assert_eq!(out.as_slice(), b"e E\nf F\ng G\nh H\n");
let out = run("e E\nf F\ng G\nh H\n", &["--"]);
assert_eq!(&out[..], b"e E\nf F\ng G\nh H\n" as &[u8]);
}
#[test]
fn unexpand_aflag_1() {
let out = run("e E\nf F\ng G\nh H\n", &["-a"]);
assert_eq!(out.as_slice(), b"e E\nf F\ng\tG\nh\t H\n");
assert_eq!(&out[..], b"e E\nf F\ng\tG\nh\t H\n" as &[u8]);
}
#[test]
fn unexpand_aflag_2() {
let out = run("e E\nf F\ng G\nh H\n", &["-t8"]);
assert_eq!(out.as_slice(), b"e E\nf F\ng\tG\nh\t H\n");
assert_eq!(&out[..], b"e E\nf F\ng\tG\nh\t H\n" as &[u8]);
}
#[test]
fn unexpand_first_only_0() {
let out = run(" A B", &["-t3"]);
assert_eq!(out.as_slice(), b"\t\t A\t B");
assert_eq!(&out[..], b"\t\t A\t B" as &[u8]);
}
#[test]
fn unexpand_first_only_1() {
let out = run(" A B", &["-t3", "--first-only"]);
assert_eq!(out.as_slice(), b"\t\t A B");
assert_eq!(&out[..], b"\t\t A B" as &[u8]);
}
#[test]
@ -76,20 +78,20 @@ fn unexpand_trailing_space_0() { // evil
// Individual spaces before fields starting with non blanks should not be
// converted, unless they are at the beginning of the line.
let out = run("123 \t1\n123 1\n123 \n123 ", &["-t4"]);
assert_eq!(out.as_slice(), b"123\t\t1\n123 1\n123 \n123 ");
assert_eq!(&out[..], b"123\t\t1\n123 1\n123 \n123 " as &[u8]);
}
#[test]
fn unexpand_trailing_space_1() { // super evil
let out = run(" abc d e f g ", &["-t1"]);
assert_eq!(out.as_slice(), b"\tabc d e\t\tf\t\tg ");
assert_eq!(&out[..], b"\tabc d e\t\tf\t\tg " as &[u8]);
}
#[test]
fn unexpand_spaces_follow_tabs_0() {
// The two first spaces can be included into the first tab.
let out = run(" \t\t A", &[]);
assert_eq!(out.as_slice(), b"\t\t A");
assert_eq!(&out[..], b"\t\t A" as &[u8]);
}
#[test]
@ -100,6 +102,7 @@ fn unexpand_spaces_follow_tabs_1() { // evil
// ' ' -> '\t' // third tabstop (5)
// ' B \t' -> ' B \t' // after the list is exhausted, nothing must change
let out = run("a \t B \t", &["-t1,4,5"]);
assert_eq!(out.as_slice(), b"a\t\t B \t");
assert_eq!(&out[..], b"a\t\t B \t" as &[u8]);
}