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sylvestre
2023-07-20 02:36:20 +00:00
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2 changed files with 65 additions and 13 deletions
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dev/src/uu_nl/nl.rs.html
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@@ -424,6 +424,32 @@
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</pre></div><pre class="rust"><code><span class="comment">// * This file is part of the uutils coreutils package.
// *
// * (c) Tobias Bohumir Schottdorf &lt;tobias.schottdorf@gmail.com&gt;
@@ -689,13 +715,8 @@
</span><span class="kw">fn </span>nl&lt;T: Read&gt;(reader: <span class="kw-2">&amp;mut </span>BufReader&lt;T&gt;, settings: <span class="kw-2">&amp;</span>Settings) -&gt; UResult&lt;()&gt; {
<span class="kw">let </span>regexp: regex::Regex = regex::Regex::new(<span class="string">r&quot;.?&quot;</span>).unwrap();
<span class="kw">let </span><span class="kw-2">mut </span>line_no = settings.starting_line_number;
<span class="comment">// The current line number&#39;s width as a string. Using to_string is inefficient
// but since we only do it once, it should not hurt.
</span><span class="kw">let </span><span class="kw-2">mut </span>line_no_width = line_no.to_string().len();
<span class="kw">let </span><span class="kw-2">mut </span>line_no_width = line_no.len();
<span class="kw">let </span>line_no_width_initial = line_no_width;
<span class="comment">// Stores the smallest integer with one more digit than line_no, so that
// when line_no &gt;= line_no_threshold, we need to use one more digit.
</span><span class="kw">let </span><span class="kw-2">mut </span>line_no_threshold = <span class="number">10i64</span>.pow(line_no_width <span class="kw">as </span>u32);
<span class="kw">let </span><span class="kw-2">mut </span>empty_line_count: u64 = <span class="number">0</span>;
<span class="kw">let </span>fill_char = <span class="kw">match </span>settings.number_format {
NumberFormat::RightZero =&gt; <span class="string">&#39;0&#39;</span>,
@@ -757,7 +778,6 @@
</span><span class="kw">if </span>settings.renumber {
line_no = settings.starting_line_number;
line_no_width = line_no_width_initial;
line_no_threshold = <span class="number">10i64</span>.pow(line_no_width <span class="kw">as </span>u32);
}
<span class="kw-2">&amp;</span>settings.header_numbering
}
@@ -826,11 +846,7 @@
<span class="comment">// Now update the variables for the (potential) next
// line.
</span>line_no += settings.line_increment;
<span class="kw">while </span>line_no &gt;= line_no_threshold {
<span class="comment">// The line number just got longer.
</span>line_no_threshold <span class="kw-2">*</span>= <span class="number">10</span>;
line_no_width += <span class="number">1</span>;
}
line_no_width = line_no.len();
}
<span class="prelude-val">Ok</span>(())
}
@@ -850,4 +866,40 @@
<span class="kw">fn </span>pass_all(<span class="kw">_</span>: <span class="kw-2">&amp;</span>str, <span class="kw">_</span>: <span class="kw-2">&amp;</span>regex::Regex) -&gt; bool {
<span class="bool-val">true
</span>}
<span class="kw">trait </span>Length {
<span class="kw">fn </span>len(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize;
}
<span class="kw">impl </span>Length <span class="kw">for </span>i64 {
<span class="comment">// Returns the length in `char`s.
</span><span class="kw">fn </span>len(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="kw">if </span><span class="kw-2">*</span><span class="self">self </span>== <span class="number">0 </span>{
<span class="kw">return </span><span class="number">1</span>;
};
<span class="kw">let </span>sign_len = <span class="kw">if </span><span class="kw-2">*</span><span class="self">self </span>&lt; <span class="number">0 </span>{ <span class="number">1 </span>} <span class="kw">else </span>{ <span class="number">0 </span>};
(<span class="number">0</span>..).take_while(|i| <span class="number">10i64</span>.pow(<span class="kw-2">*</span>i) &lt;= <span class="self">self</span>.abs()).count() + sign_len
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>test {
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="attr">#[test]
</span><span class="kw">fn </span>test_len() {
<span class="macro">assert_eq!</span>((-<span class="number">1</span>).len(), <span class="number">2</span>);
<span class="macro">assert_eq!</span>((-<span class="number">10</span>).len(), <span class="number">3</span>);
<span class="macro">assert_eq!</span>((-<span class="number">100</span>).len(), <span class="number">4</span>);
<span class="macro">assert_eq!</span>((-<span class="number">1000</span>).len(), <span class="number">5</span>);
<span class="macro">assert_eq!</span>(<span class="number">0</span>.len(), <span class="number">1</span>);
<span class="macro">assert_eq!</span>(<span class="number">1</span>.len(), <span class="number">1</span>);
<span class="macro">assert_eq!</span>(<span class="number">10</span>.len(), <span class="number">2</span>);
<span class="macro">assert_eq!</span>(<span class="number">100</span>.len(), <span class="number">3</span>);
<span class="macro">assert_eq!</span>(<span class="number">1000</span>.len(), <span class="number">4</span>);
}
}
</code></pre></div></section></main></body></html>
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