85 lines
1.7 KiB
Rust
85 lines
1.7 KiB
Rust
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///
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/// Macros
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///
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#[macro_export]
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macro_rules! err {
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($expr:expr) => {{
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err_json!(json!($expr));
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}}
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}
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#[macro_export]
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macro_rules! err_json {
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($expr:expr) => {{
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println!("ERROR: {}", $expr);
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return Err($crate::rocket::response::status::BadRequest(Some($crate::rocket_contrib::Json($expr))));
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}}
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}
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#[macro_export]
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macro_rules! err_handler {
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($expr:expr) => {{
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println!("ERROR: {}", $expr);
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return $crate::rocket::Outcome::Failure(($crate::rocket::http::Status::Unauthorized, $expr));
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}}
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}
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///
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/// File handling
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///
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use std::path::Path;
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use std::io::Read;
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use std::fs::File;
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pub fn file_exists(path: &str) -> bool {
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Path::new(path).exists()
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}
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pub fn read_file(path: &str) -> Result<Vec<u8>, String> {
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let mut file = File::open(Path::new(path))
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.map_err(|e| format!("Error opening file: {}", e))?;
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let mut contents: Vec<u8> = Vec::new();
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file.read_to_end(&mut contents)
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.map_err(|e| format!("Error reading file: {}", e))?;
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Ok(contents)
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}
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///
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/// String util methods
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///
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use std::str::FromStr;
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pub fn upcase_first(s: &str) -> String {
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let mut c = s.chars();
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match c.next() {
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None => String::new(),
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Some(f) => f.to_uppercase().collect::<String>() + c.as_str(),
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}
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}
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pub fn parse_option_string<S, T>(string: Option<S>) -> Option<T> where S: Into<String>, T: FromStr {
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if let Some(Ok(value)) = string.map(|s| s.into().parse::<T>()) {
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Some(value)
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} else {
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None
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}
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}
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///
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/// Date util methods
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///
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use chrono::NaiveDateTime;
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const DATETIME_FORMAT: &'static str = "%Y-%m-%dT%H:%M:%S%.6fZ";
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pub fn format_date(date: &NaiveDateTime) -> String {
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date.format(DATETIME_FORMAT).to_string()
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}
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