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- //! Functions to be used for clap::Arg::validator()
- //! to validate arguments
- use std::path::PathBuf;
- use boolinator::Boolinator;
- pub fn is_existing_path(s: String) -> Result<(), String> {
- PathBuf::from(s.clone()).exists().as_result((), format!("Not a File or Directory: {}", s))
- }
- pub fn is_file(s: String) -> Result<(), String> {
- PathBuf::from(s.clone()).is_file().as_result((), format!("Not a File: {}", s))
- }
- pub fn is_directory(s: String) -> Result<(), String> {
- PathBuf::from(s.clone()).is_dir().as_result((), format!("Not a Directory: {}", s))
- }
- pub fn is_integer(s: String) -> Result<(), String> {
- use std::str::FromStr;
- let i : Result<i64, _> = FromStr::from_str(&s);
- i.map(|_| ()).map_err(|_| format!("Not an integer: {}", s))
- }
- pub fn is_url(s: String) -> Result<(), String> {
- use url::Url;
- Url::parse(&s).map(|_| ()).map_err(|_| format!("Not a URL: {}", s))
- }
- pub fn is_tag(s: String) -> Result<(), String> {
- use regex::Regex;
- lazy_static! { static ref TAG_RE : Regex = Regex::new("[:alpha:][:word:]*").unwrap(); }
- TAG_RE
- .is_match(&s)
- .as_result((), format!("Not a valid Tag: '{}' - Valid is [a-zA-Z][0-9a-zA-Z]*", s))
- }
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