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Auto merge of #629 - kbknapp:issue-626, r=kbknapp

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Issue 626
This commit is contained in:
Homu 2016-08-26 08:45:37 +09:00
commit 2df109a428
5 changed files with 87 additions and 103 deletions
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10
CHANGELOG.md
View file

@ -1,3 +1,13 @@
<a name="v2.10.4"></a>
### v2.10.4 (2016-08-25)
#### Bug Fixes
* **Help Wrapping:** fixes a bug where help is wrapped incorrectly and causing a panic with some non-English characters ([d0b442c7](https://github.com/kbknapp/clap-rs/commit/d0b442c7beeecac9764406bc3bd171ced0b8825e), closes [#626](https://github.com/kbknapp/clap-rs/issues/626))
<a name="v2.10.3"></a>
### v2.10.3 (2016-08-25)

2
Cargo.toml
View file

@ -1,7 +1,7 @@
[package]
name = "clap"
version = "2.10.3"
version = "2.10.4"
authors = ["Kevin K. <kbknapp@gmail.com>"]
exclude = ["examples/*", "clap-test/*", "tests/*", "benches/*", "*.png", "clap-perf/*", "*.dot"]
description = "A simple to use, efficient, and full featured Command Line Argument Parser"

4
README.md
View file

@ -39,6 +39,10 @@ Created by [gh-md-toc](https://github.com/ekalinin/github-markdown-toc)
## What's New
Here's the highlights for v2.10.4
* Fixes a bug where help is wrapped incorrectly and causing a panic with some non-English characters
Here's the highlights for v2.10.3
* Fixes a bug with non-English characters in help text wrapping, where the character is stripped or causes a panic

119
src/app/help.rs
View file

@ -25,7 +25,7 @@ mod term_size {
use unicode_width::UnicodeWidthStr;
use strext::_StrExt;
// use strext::_StrExt;
fn str_width(s: &str) -> usize {
UnicodeWidthStr::width(s)
@ -336,7 +336,6 @@ impl<'a> Help<'a> {
let width = self.term_w;
debugln!("Term width...{}", width);
let too_long = str_width(h) >= width;
debugln!("Too long...{:?}", too_long);
debug!("Too long...");
if too_long {
@ -355,41 +354,7 @@ impl<'a> Help<'a> {
}
lw
};
debugln!("Longest word...{}", longest_w);
debug!("Enough space to wrap...");
if longest_w < width {
sdebugln!("Yes");
let mut indices = vec![];
let mut idx = 0;
loop {
idx += width - 1;
if idx >= help.len() {
break;
}
// 'a' arbitrary non space char
if help.chars().nth(idx).unwrap_or('a') != ' ' {
idx = find_idx_of_space(&*help, idx);
}
debugln!("Adding idx: {}", idx);
debugln!("At {}: {:?}", idx, help.chars().nth(idx));
indices.push(idx);
if str_width(&help[idx..]) <= width {
break;
}
}
for (i, idx) in indices.iter().enumerate() {
debugln!("iter;i={},idx={}", i, idx);
let j = idx + (2 * i);
debugln!("removing: {}", j);
debugln!("at {}: {:?}", j, help.chars().nth(j));
help.remove(j);
help.insert(j, '{');
help.insert(j + 1, 'n');
help.insert(j + 2, '}');
}
} else {
sdebugln!("No");
}
wrap_help(&mut help, longest_w, width);
} else {
sdebugln!("No");
}
@ -427,7 +392,7 @@ impl<'a> Help<'a> {
let width = self.term_w;
debugln!("Term width...{}", width);
let too_long = spcs + str_width(h) + str_width(&*spec_vals) >= width;
debugln!("Too long...{:?}", too_long);
debugln!("Spaces: {}", spcs);
// Is help on next line, if so newline + 2x tab
if self.next_line_help || arg.is_set(ArgSettings::NextLineHelp) {
@ -435,7 +400,7 @@ impl<'a> Help<'a> {
}
debug!("Too long...");
if too_long {
if too_long && spcs <= width {
sdebugln!("Yes");
help.push_str(h);
help.push_str(&*spec_vals);
@ -453,35 +418,7 @@ impl<'a> Help<'a> {
}
lw
};
debugln!("Longest word...{}", longest_w);
debug!("Enough space to wrap...");
if longest_w < avail_chars {
sdebugln!("Yes");
let mut prev_space = 0;
let mut j = 0;
let mut i = 0;
for (idx, g) in (&*help.clone()).grapheme_indices(true) {
debugln!("iter;idx={},g={}", idx, g);
if g != " " { continue; }
if str_width(&help[j..idx]) < avail_chars {
debugln!("Still enough space...");
prev_space = idx;
continue;
}
debugln!("Adding Newline...");
j = prev_space + (2 * i);
debugln!("i={},prev_space={},j={}", i, prev_space, j);
debugln!("removing: {}", j);
debugln!("char at {}: {}", j, &help[j..j]);
help.remove(j);
help.insert(j, '{');
help.insert(j + 1, 'n');
help.insert(j + 2, '}');
i += 1;
}
} else {
sdebugln!("No");
}
wrap_help(&mut help, longest_w, avail_chars);
} else {
sdebugln!("No");
}
@ -946,24 +883,34 @@ impl<'a> Help<'a> {
}
}
fn find_idx_of_space(full: &str, mut start: usize) -> usize {
debugln!("fn=find_idx_of_space;");
let haystack = if full._is_char_boundary(start) {
&full[..start]
fn wrap_help(help: &mut String, longest_w: usize, avail_chars: usize) {
debugln!("fn=wrap_help;longest_w={},avail_chars={}", longest_w, avail_chars);
debug!("Enough space to wrap...");
if longest_w < avail_chars {
sdebugln!("Yes");
let mut prev_space = 0;
let mut j = 0;
let mut i = 0;
for (idx, g) in (&*help.clone()).grapheme_indices(true) {
debugln!("iter;idx={},g={}", idx, g);
if g != " " { continue; }
if str_width(&help[j..idx + (2 * i)]) < avail_chars {
debugln!("Still enough space...");
prev_space = idx;
continue;
}
debugln!("Adding Newline...");
j = prev_space + (2 * i);
debugln!("i={},prev_space={},j={}", i, prev_space, j);
debugln!("removing: {}", j);
debugln!("char at {}: {}", j, &help[j..j]);
help.remove(j);
help.insert(j, '{');
help.insert(j + 1, 'n');
help.insert(j + 2, '}');
i += 1;
}
} else {
while !full._is_char_boundary(start) {
start -= 1;
}
&full[..start]
};
debugln!("haystack: {}", haystack);
for (i, c) in haystack.chars().rev().enumerate() {
debugln!("iter;c={},i={}", c, i);
if c == ' ' {
debugln!("Found space returning start-i...{}", start - (i + 1));
return start - (i + 1);
}
sdebugln!("No");
}
0
}

55
tests/help.rs
View file

@ -93,12 +93,13 @@ FLAGS:
OPTIONS:
-c, --cafe <FILE> A coffeehouse, coffee shop, or café is an
establishment which primarily serves hot
coffee, related coffee beverages (e.g., café
latte, cappuccino, espresso), tea, and other
hot beverages. Some coffeehouses also serve cold
beverages such as iced coffee and iced tea. Many
cafés also serve some type of food, such as light
snacks, muffins, or pastries.";
coffee, related coffee beverages (e.g.,
café latte, cappuccino, espresso), tea,
and other hot beverages. Some
coffeehouses also serve cold beverages
such as iced coffee and iced tea. Many
cafés also serve some type of food, such
as light snacks, muffins, or pastries.";
static ISSUE_626_PANIC: &'static str = "ctest 0.1
@ -110,15 +111,19 @@ FLAGS:
-V, --version Prints version information
OPTIONS:
-c, --cafe <FILE> La culture du café est très
développée dans de
nombreux pays à climat chaud
d'Amérique, d'Afrique et
d'Asie, dans des plantations qui
sont cultivées pour les marchés
d'exportation. Le café est souvent
une contribution majeure aux
exportations des régions productrices.";
-c, --cafe <FILE> La culture du café est
très développée dans de
nombreux pays à climat
chaud d'Amérique,
d'Afrique et d'Asie,
dans des plantations
qui sont cultivées pour
les marchés
d'exportation. Le café
est souvent une
contribution majeure
aux exportations des
régions productrices.";
#[test]
fn help_short() {
@ -271,7 +276,7 @@ fn issue_626_unicode_cutoff() {
fn issue_626_panic() {
let app = App::new("ctest")
.version("0.1")
.set_term_width(53)
.set_term_width(52)
.arg(Arg::with_name("cafe")
.short("c")
.long("cafe")
@ -282,3 +287,21 @@ fn issue_626_panic() {
.takes_value(true));
test::check_err_output(app, "ctest --help", ISSUE_626_PANIC, false);
}
#[test]
fn issue_626_variable_panic() {
for i in 10..320 {
let _ = App::new("ctest")
.version("0.1")
.set_term_width(i)
.arg(Arg::with_name("cafe")
.short("c")
.long("cafe")
.value_name("FILE")
.help("La culture du café est très développée dans de nombreux pays à climat chaud d'Amérique, \
d'Afrique et d'Asie, dans des plantations qui sont cultivées pour les marchés d'exportation. \
Le café est souvent une contribution majeure aux exportations des régions productrices.")
.takes_value(true))
.get_matches_from_safe(vec!["ctest", "--help"]);
}
}