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37 lines
731 B
37 lines
731 B
2 years ago
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# deserialize-file-size
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A serde helper function for deserializing file size input
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flexibly and robustly.
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Accepts either:
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1) a "human" size string, e.g. "1k", "5mb", "12GiB", etc.
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2) an integer number of bytes
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## Example
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```rust
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use serde::Deserialize;
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use deserialize_file_size::deserialize_file_size;
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#[derive(Deserialize, Debug, PartialEq)]
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struct FileSize {
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#[serde(deserialize_with = "deserialize_file_size")]
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sz: usize,
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}
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let size_str = r#"{"sz": "42mb"}"#;
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assert_eq!(
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serde_json::from_str::<FileSize>(size_str).unwrap(),
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FileSize { sz: 1024 * 1024 * 42 },
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);
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let int_bytes = r#"{"sz": 4096}"#;
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assert_eq!(
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serde_json::from_str::<FileSize>(int_bytes).unwrap(),
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FileSize { sz: 4096 },
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);
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```
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