fix(encoder-writer): use write_all instead of write #90
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If the inner writer does not write everything, the missing data is never written using write_all, ensures all data is written to the inner writer
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@@ Coverage Diff @@
## master #90 +/- ##
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- Coverage 96.52% 95.85% -0.68%
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Files 12 12
Lines 1412 1448 +36
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+ Hits 1363 1388 +25
- Misses 49 60 +11
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You're right; good catch. (Sigh, and I've caught this same bug in other projects -- you'd think I'd have gotten it right in my own.) Unfortunately this approach is not correct; an implementation of |
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Maybe I am missing something, but this is the way that |
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answering my own question: I guess the difference is that BufWriter is explicitly designed to change writes, vs any other „regular“ writer that produced data. |
Closed
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Opened rust-lang/rust#56889 about |
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Given that the above issue is unlikely to be resolved quickly, I think I'll proceed with an implementation that returns |
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They'll be retried on subsequent writes, but this plays poorly with write_all. See rust-lang/rust#56889. Hat tip to #90.
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Closing this in favor of #92, which honors the contract of |
This was referenced Mar 16, 2021
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332: Bump base64 from 0.12.3 to 0.13.0 r=thomaseizinger a=dependabot[bot] Bumps [base64](https://github.com/marshallpierce/rust-base64) from 0.12.3 to 0.13.0. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md">base64's changelog</a>.</em></p> <blockquote> <h1>0.13.0</h1> <ul> <li>Config methods are const</li> <li>Added <code>EncoderStringWriter</code> to allow encoding directly to a String</li> <li><code>EncoderWriter</code> now owns its delegate writer rather than keeping a reference to it (though refs still work) <ul> <li>As a consequence, it is now possible to extract the delegate writer from an <code>EncoderWriter</code> via <code>finish()</code>, which returns <code>Result<W></code> instead of <code>Result<()></code>. If you were calling <code>finish()</code> explicitly, you will now need to use <code>let _ = foo.finish()</code> instead of just <code>foo.finish()</code> to avoid a warning about the unused value.</li> </ul> </li> <li>When decoding input that has both an invalid length and an invalid symbol as the last byte, <code>InvalidByte</code> will be emitted instead of <code>InvalidLength</code> to make the problem more obvious.</li> </ul> <h1>0.12.2</h1> <ul> <li>Add <code>BinHex</code> alphabet</li> </ul> <h1>0.12.1</h1> <ul> <li>Add <code>Bcrypt</code> alphabet</li> </ul> <h1>0.12.0</h1> <ul> <li>A <code>Read</code> implementation (<code>DecoderReader</code>) to let users transparently decoded data from a b64 input source</li> <li>IMAP's modified b64 alphabet</li> <li>Relaxed type restrictions to just <code>AsRef<[ut8]></code> for main <code>encode*</code>/<code>decode*</code> functions</li> <li>A minor performance improvement in encoding</li> </ul> <h1>0.11.0</h1> <ul> <li>Minimum rust version 1.34.0</li> <li><code>no_std</code> is now supported via the two new features <code>alloc</code> and <code>std</code>.</li> </ul> <h1>0.10.1</h1> <ul> <li>Minimum rust version 1.27.2</li> <li>Fix bug in streaming encoding (<a href="https://github.com/marshallpierce/rust-base64/pull/90">#90</a>): if the underlying writer didn't write all the bytes given to it, the remaining bytes would not be retried later. See the docs on <code>EncoderWriter::write</code>.</li> <li>Make it configurable whether or not to return an error when decoding detects excess trailing bits.</li> </ul> <h1>0.10.0</h1> <ul> <li>Remove line wrapping. Line wrapping was never a great conceptual fit in this library, and other features (streaming encoding, etc) either couldn't support it or could support only special cases of it with a great increase in complexity. Line wrapping has been pulled out into a <a href="https://crates.io/crates/line-wrap">line-wrap</a> crate, so it's still available if you need it. <ul> <li><code>Base64Display</code> creation no longer uses a <code>Result</code> because it can't fail, which means its helper methods for common configs that <code>unwrap()</code> for you are no longer needed</li> </ul> </li> <li>Add a streaming encoder <code>Write</code> impl to transparently base64 as you write.</li> <li>Remove the remaining <code>unsafe</code> code.</li> <li>Remove whitespace stripping to simplify <code>no_std</code> support. No out of the box configs use it, and it's trivial to do yourself if needed: <code>filter(|b| !b" \n\t\r\x0b\x0c".contains(b)</code>.</li> <li>Detect invalid trailing symbols when decoding and return an error rather than silently ignoring them.</li> </ul> <h1>0.9.3</h1> <ul> <li>Update safemem</li> </ul> <h1>0.9.2</h1> <ul> <li>Derive <code>Clone</code> for <code>DecodeError</code>.</li> </ul> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/marshallpierce/rust-base64/commit/b4fc91325ec985e2a18e83e95a3c08eebd636af4"><code>b4fc913</code></a> v0.13.0</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/bba4c5d11e3b5f0974d7d126342e0ca67bb4cc1f"><code>bba4c5d</code></a> Merge pull request <a href="https://github.com/marshallpierce/rust-base64/issues/145">#145</a> from marshallpierce/mp/cleanup</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/42967320b3c675c8ae5d3d46dd6e6aea4a7fc970"><code>4296732</code></a> Add docs and other cleanup</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/6bb35566333bd4c2cc74b8b820af5bfcda12a1b8"><code>6bb3556</code></a> Merge pull request <a href="https://github.com/marshallpierce/rust-base64/issues/144">#144</a> from untitaker/invalid-bytes-not-length</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/5b40e0c04ed522d10cfeaae0f0b343dd3e6f1d4d"><code>5b40e0c</code></a> Merge pull request <a href="https://github.com/marshallpierce/rust-base64/issues/142">#142</a> from marshallpierce/mp/string-writer</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/8b1ae22babb33a5c7cee84f0445434bff6880c76"><code>8b1ae22</code></a> Rename StrWrite to StrConsumer</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/27ccb6591e22dbe81840268feec0917feaaebd97"><code>27ccb65</code></a> fix tests</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/d15cd384e1a91fa73a7c57f30d4b76df2149df68"><code>d15cd38</code></a> Give better error messages when decoding data with trailing newlines</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/5a56885c655deb54ccb206165e8351b0476c78b8"><code>5a56885</code></a> Introduce StrWriter to allow ESW to wrap both a String and a &mut String</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/2dc0296d2a0c01387f6361c4c710f7d0c9e9aee2"><code>2dc0296</code></a> Merge pull request <a href="https://github.com/marshallpierce/rust-base64/issues/143">#143</a> from marshallpierce/mp/invalid-length-doc</li> <li>Additional commits viewable in <a href="https://github.com/marshallpierce/rust-base64/compare/v0.12.3...v0.13.0">compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. 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332: Bump base64 from 0.12.3 to 0.13.0 r=thomaseizinger a=dependabot[bot] Bumps [base64](https://github.com/marshallpierce/rust-base64) from 0.12.3 to 0.13.0. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md">base64's changelog</a>.</em></p> <blockquote> <h1>0.13.0</h1> <ul> <li>Config methods are const</li> <li>Added <code>EncoderStringWriter</code> to allow encoding directly to a String</li> <li><code>EncoderWriter</code> now owns its delegate writer rather than keeping a reference to it (though refs still work) <ul> <li>As a consequence, it is now possible to extract the delegate writer from an <code>EncoderWriter</code> via <code>finish()</code>, which returns <code>Result<W></code> instead of <code>Result<()></code>. If you were calling <code>finish()</code> explicitly, you will now need to use <code>let _ = foo.finish()</code> instead of just <code>foo.finish()</code> to avoid a warning about the unused value.</li> </ul> </li> <li>When decoding input that has both an invalid length and an invalid symbol as the last byte, <code>InvalidByte</code> will be emitted instead of <code>InvalidLength</code> to make the problem more obvious.</li> </ul> <h1>0.12.2</h1> <ul> <li>Add <code>BinHex</code> alphabet</li> </ul> <h1>0.12.1</h1> <ul> <li>Add <code>Bcrypt</code> alphabet</li> </ul> <h1>0.12.0</h1> <ul> <li>A <code>Read</code> implementation (<code>DecoderReader</code>) to let users transparently decoded data from a b64 input source</li> <li>IMAP's modified b64 alphabet</li> <li>Relaxed type restrictions to just <code>AsRef<[ut8]></code> for main <code>encode*</code>/<code>decode*</code> functions</li> <li>A minor performance improvement in encoding</li> </ul> <h1>0.11.0</h1> <ul> <li>Minimum rust version 1.34.0</li> <li><code>no_std</code> is now supported via the two new features <code>alloc</code> and <code>std</code>.</li> </ul> <h1>0.10.1</h1> <ul> <li>Minimum rust version 1.27.2</li> <li>Fix bug in streaming encoding (<a href="https://github.com/marshallpierce/rust-base64/pull/90">#90</a>): if the underlying writer didn't write all the bytes given to it, the remaining bytes would not be retried later. See the docs on <code>EncoderWriter::write</code>.</li> <li>Make it configurable whether or not to return an error when decoding detects excess trailing bits.</li> </ul> <h1>0.10.0</h1> <ul> <li>Remove line wrapping. Line wrapping was never a great conceptual fit in this library, and other features (streaming encoding, etc) either couldn't support it or could support only special cases of it with a great increase in complexity. Line wrapping has been pulled out into a <a href="https://crates.io/crates/line-wrap">line-wrap</a> crate, so it's still available if you need it. <ul> <li><code>Base64Display</code> creation no longer uses a <code>Result</code> because it can't fail, which means its helper methods for common configs that <code>unwrap()</code> for you are no longer needed</li> </ul> </li> <li>Add a streaming encoder <code>Write</code> impl to transparently base64 as you write.</li> <li>Remove the remaining <code>unsafe</code> code.</li> <li>Remove whitespace stripping to simplify <code>no_std</code> support. No out of the box configs use it, and it's trivial to do yourself if needed: <code>filter(|b| !b" \n\t\r\x0b\x0c".contains(b)</code>.</li> <li>Detect invalid trailing symbols when decoding and return an error rather than silently ignoring them.</li> </ul> <h1>0.9.3</h1> <ul> <li>Update safemem</li> </ul> <h1>0.9.2</h1> <ul> <li>Derive <code>Clone</code> for <code>DecodeError</code>.</li> </ul> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/marshallpierce/rust-base64/commit/b4fc91325ec985e2a18e83e95a3c08eebd636af4"><code>b4fc913</code></a> v0.13.0</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/bba4c5d11e3b5f0974d7d126342e0ca67bb4cc1f"><code>bba4c5d</code></a> Merge pull request <a href="https://github.com/marshallpierce/rust-base64/issues/145">#145</a> from marshallpierce/mp/cleanup</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/42967320b3c675c8ae5d3d46dd6e6aea4a7fc970"><code>4296732</code></a> Add docs and other cleanup</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/6bb35566333bd4c2cc74b8b820af5bfcda12a1b8"><code>6bb3556</code></a> Merge pull request <a href="https://github.com/marshallpierce/rust-base64/issues/144">#144</a> from untitaker/invalid-bytes-not-length</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/5b40e0c04ed522d10cfeaae0f0b343dd3e6f1d4d"><code>5b40e0c</code></a> Merge pull request <a href="https://github.com/marshallpierce/rust-base64/issues/142">#142</a> from marshallpierce/mp/string-writer</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/8b1ae22babb33a5c7cee84f0445434bff6880c76"><code>8b1ae22</code></a> Rename StrWrite to StrConsumer</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/27ccb6591e22dbe81840268feec0917feaaebd97"><code>27ccb65</code></a> fix tests</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/d15cd384e1a91fa73a7c57f30d4b76df2149df68"><code>d15cd38</code></a> Give better error messages when decoding data with trailing newlines</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/5a56885c655deb54ccb206165e8351b0476c78b8"><code>5a56885</code></a> Introduce StrWriter to allow ESW to wrap both a String and a &mut String</li> <li><a href="https://github.com/marshallpierce/rust-base64/commit/2dc0296d2a0c01387f6361c4c710f7d0c9e9aee2"><code>2dc0296</code></a> Merge pull request <a href="https://github.com/marshallpierce/rust-base64/issues/143">#143</a> from marshallpierce/mp/invalid-length-doc</li> <li>Additional commits viewable in <a href="https://github.com/marshallpierce/rust-base64/compare/v0.12.3...v0.13.0">compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) </details> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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If the inner writer does not write everything, the missing data is never written
using write_all, ensures all data is written to the inner writer