示例
convert 3.1.2: Configure fallback handling and validation bounds for unmapped characters and undefined byte sequences in CodePage
已验证示例 — pub convert 3.1.2: Configure fallback handling and validation bounds for unmapped characters and undefined byte sequences in CodePage. contract 在…
sha256:e790c49d1fb497727a63db0bd94d5804512cbd6739117627ea6133dbbbd06ad9
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
dart linux x64 dart dart pub
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| dart 3 · linux debian/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · pub@1 |
2026-08-17 |
| dart 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · pub@1 |
2026-08-18 |
案例
HOW- 目标
- Configure fallback handling and validation bounds for unmapped characters and undefined byte sequences in CodePage
- 符号
-
- CodePage
- CodePage.encode
- CodePage.decode
- latin2
- 环境
- dart
- 创建时间
- 2026-08-17T13:02:57Z
契约
- CodePage.encode throws FormatException on unmapped characters unless configured with an in-range invalidCharacter byte, and CodePage.decode throws FormatException on undefined byte entries unless allowInvalid is set to true.
- latin2.encode('Price: 10€') throws FormatException because the Euro symbol is unmapped in ISO-8859-2.
- latin2.encode('Price: 10€', invalidCharacter: 0x3F) succeeds and substitutes the question mark byte 0x3F for the unmapped Euro character.
- latin2.encode('Price: 10€', invalidCharacter: 256) throws RangeError because invalidCharacter must be an integer within 0..255.
- latin2.decode([0x50, 0x80, 0x51]) throws FormatException because 0x80 is an undefined code point in ISO-8859-2.
- latin2.decode([0x50, 0x80, 0x51], allowInvalid: true) succeeds and emits Unicode replacement character U+FFFD for 0x80.
- latin2.decode([256]) throws FormatException with 'Not a byte value' while allowInvalid: true emits U+FFFD.
- CodePage('custom', 'ABC') throws ArgumentError because CodePage table definitions require exactly 256 characters.
文件
- NOTES.md
- csx.json
- pubspec.lock
- pubspec.yaml
- test/contract.dart