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use std::{
fs::{File, OpenOptions},
io::{BufWriter, Read, Write},
path::Path,
};
use crate::{data::Data, Result};
/// Attempts to deserialize a Data struct from a string
pub fn from_str(s: &str) -> Result<Data> {
Ok(toml::from_str(s)?)
}
/// Attempts to deserialize a Data struct from a slice of bytes
pub fn from_slice(s: &[u8]) -> Result<Data> {
Ok(toml::from_slice(s)?)
}
/// Attempts to deserialize a Data struct from something that implements
/// the std::io::Read trait
pub fn from_reader<R: Read>(mut r: R) -> Result<Data> {
let mut buffer = Vec::new();
r.read_to_end(&mut buffer)?;
from_slice(&buffer)
}
/// Attempts to deserialize a Data struct from a file
pub fn from_file<P: AsRef<Path>>(path: P) -> Result<Data> {
let path = path.as_ref();
let file = File::open(path)?;
Ok(from_reader(file)?)
}
/// Attempts to serialize a Data struct to a String
pub fn to_string(data: &Data) -> Result<String> {
Ok(toml::to_string_pretty(data)?)
}
/// Attempts to serialize a Data struct to a Vec of bytes
pub fn to_vec(data: &Data) -> Result<Vec<u8>> {
Ok(toml::to_vec(data)?)
}
/// Attempts to serialize a Data struct to something that implements the
/// std::io::Write trait
pub fn to_writer<W: Write>(data: &Data, writer: W) -> Result<()> {
let mut buf_writer = BufWriter::new(writer);
let vec = to_vec(data)?;
buf_writer.write(&vec)?;
Ok(())
}
/// Attempts to serialize a Data struct to a file
///
/// When opening the file, this will set the `.write(true)` and
/// `.truncate(true)` options, use the next method for more
/// fine-grained control
pub fn to_file<P: AsRef<Path>>(data: &Data, path: P) -> Result<()> {
let mut options = OpenOptions::new();
options.create(true).write(true).truncate(true);
to_file_with_options(data, path, options)?;
Ok(())
}
/// Attempts to serialize a Data struct to a file
pub fn to_file_with_options<P: AsRef<Path>>(
data: &Data,
path: P,
options: OpenOptions,
) -> Result<()> {
let path = path.as_ref();
let file = options.open(path)?;
to_writer(data, file)?;
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
use std::{fs::OpenOptions, io::Cursor};
use tempfile::{tempdir, NamedTempFile};
const DOC: &'static str = indoc::indoc!(
r#"
base = "https://example.com"
client_id = "adbc01234"
client_secret = "0987dcba"
redirect = "urn:ietf:wg:oauth:2.0:oob"
token = "fedc5678"
"#
);
#[test]
fn test_from_str() {
let desered = from_str(DOC).expect("Couldn't deserialize Data");
assert_eq!(
desered,
Data {
base: "https://example.com".into(),
client_id: "adbc01234".into(),
client_secret: "0987dcba".into(),
redirect: "urn:ietf:wg:oauth:2.0:oob".into(),
token: "fedc5678".into(),
}
);
}
#[test]
fn test_from_slice() {
let doc = DOC.as_bytes();
let desered = from_slice(&doc).expect("Couldn't deserialize Data");
assert_eq!(
desered,
Data {
base: "https://example.com".into(),
client_id: "adbc01234".into(),
client_secret: "0987dcba".into(),
redirect: "urn:ietf:wg:oauth:2.0:oob".into(),
token: "fedc5678".into(),
}
);
}
#[test]
fn test_from_reader() {
let doc = DOC.as_bytes();
let doc = Cursor::new(doc);
let desered = from_reader(doc).expect("Couldn't deserialize Data");
assert_eq!(
desered,
Data {
base: "https://example.com".into(),
client_id: "adbc01234".into(),
client_secret: "0987dcba".into(),
redirect: "urn:ietf:wg:oauth:2.0:oob".into(),
token: "fedc5678".into(),
}
);
}
#[test]
fn test_from_file() {
let mut datafile = NamedTempFile::new().expect("Couldn't create tempfile");
write!(&mut datafile, "{}", DOC).expect("Couldn't write Data to file");
let desered = from_file(datafile.path()).expect("Couldn't deserialize Data");
assert_eq!(
desered,
Data {
base: "https://example.com".into(),
client_id: "adbc01234".into(),
client_secret: "0987dcba".into(),
redirect: "urn:ietf:wg:oauth:2.0:oob".into(),
token: "fedc5678".into(),
}
);
}
#[test]
fn test_to_string() {
let data = Data {
base: "https://example.com".into(),
client_id: "adbc01234".into(),
client_secret: "0987dcba".into(),
redirect: "urn:ietf:wg:oauth:2.0:oob".into(),
token: "fedc5678".into(),
};
let s = to_string(&data).expect("Couldn't serialize Data");
let desered = from_str(&s).expect("Couldn't deserialize Data");
assert_eq!(data, desered);
}
#[test]
fn test_to_vec() {
let data = Data {
base: "https://example.com".into(),
client_id: "adbc01234".into(),
client_secret: "0987dcba".into(),
redirect: "urn:ietf:wg:oauth:2.0:oob".into(),
token: "fedc5678".into(),
};
let v = to_vec(&data).expect("Couldn't write to vec");
let desered = from_slice(&v).expect("Couldn't deserialize data");
assert_eq!(data, desered);
}
#[test]
fn test_to_writer() {
let data = Data {
base: "https://example.com".into(),
client_id: "adbc01234".into(),
client_secret: "0987dcba".into(),
redirect: "urn:ietf:wg:oauth:2.0:oob".into(),
token: "fedc5678".into(),
};
let mut buffer = Vec::new();
to_writer(&data, &mut buffer).expect("Couldn't write to writer");
let reader = Cursor::new(buffer);
let desered = from_reader(reader).expect("Couldn't deserialize Data");
assert_eq!(data, desered);
}
#[test]
fn test_to_file() {
let data = Data {
base: "https://example.com".into(),
client_id: "adbc01234".into(),
client_secret: "0987dcba".into(),
redirect: "urn:ietf:wg:oauth:2.0:oob".into(),
token: "fedc5678".into(),
};
let tempdir = tempdir().expect("Couldn't create tempdir");
let filename = tempdir.path().join("mastodon-data.toml");
to_file(&data, &filename).expect("Couldn't write to file");
let desered = from_file(&filename).expect("Couldn't deserialize Data");
assert_eq!(data, desered);
}
#[test]
fn test_to_file_with_options() {
let data = Data {
base: "https://example.com".into(),
client_id: "adbc01234".into(),
client_secret: "0987dcba".into(),
redirect: "urn:ietf:wg:oauth:2.0:oob".into(),
token: "fedc5678".into(),
};
let file = NamedTempFile::new().expect("Couldn't create tempfile");
let mut options = OpenOptions::new();
options.write(true).create(false).truncate(true);
to_file_with_options(&data, file.path(), options).expect("Couldn't write to file");
let desered = from_file(file.path()).expect("Couldn't deserialize Data");
assert_eq!(data, desered);
}
}
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