scsys_utils/casing/
mod.rs

1/*
2    Appellation: casing <module>
3    Contrib: FL03 <jo3mccain@icloud.com>
4*/
5//! # Casing
6//!
7//! This module works to implement various naming conventions and name-related primitives.
8#![cfg(feature = "alloc")]
9#[doc(inline)]
10pub use self::{kind::*, utils::*};
11
12mod kind;
13
14pub(crate) mod prelude {
15    pub use super::kind::CaseType;
16}
17
18mod utils {
19    #[cfg(feature = "alloc")]
20    use alloc::string::String;
21
22    /// Converts a string to snake_case.
23    pub fn to_snakecase(s: &str) -> String {
24        s.chars()
25            .fold(String::new(), |mut acc, c| {
26                if c.is_uppercase() {
27                    if !acc.is_empty() {
28                        acc.push('_');
29                    }
30                    acc.push(c.to_lowercase().next().unwrap());
31                } else {
32                    acc.push(c);
33                }
34                acc
35            })
36            .to_lowercase()
37    }
38
39    /// Converts a string to camelCase.
40    pub fn to_camelcase(s: &str) -> String {
41        let mut chars = s.chars();
42        let first = chars.next().unwrap();
43        let rest = chars.collect::<String>();
44        format!("{}{}", first.to_lowercase(), rest)
45    }
46
47    /// Converts a string to PascalCase.
48    pub fn to_pascalcase(s: &str) -> String {
49        let mut chars = s.chars();
50        let first = chars.next().unwrap();
51        let rest = chars.collect::<String>();
52        format!("{}{}", first.to_uppercase(), rest)
53    }
54
55    /// Converts a string to kebab-case.
56    pub fn to_kebabcase(s: &str) -> String {
57        s.chars()
58            .fold(String::new(), |mut acc, c| {
59                if c.is_uppercase() {
60                    if !acc.is_empty() {
61                        acc.push('-');
62                    }
63                    acc.push(c.to_lowercase().next().unwrap());
64                } else {
65                    acc.push(c);
66                }
67                acc
68            })
69            .to_lowercase()
70    }
71
72    /// Converts a string to SCREAMING_SNAKE_CASE.
73    pub fn to_screaming_snakecase(s: &str) -> String {
74        s.chars().fold(String::new(), |mut acc, c| {
75            if c.is_uppercase() {
76                if !acc.is_empty() {
77                    acc.push('_');
78                }
79                acc.push(c);
80            } else {
81                acc.push(c.to_uppercase().next().unwrap());
82            }
83            acc
84        })
85    }
86}
scsys_utils/casing/mod.rs

scsys_utils/casing/
mod.rs
