validator_rs/
string.rs

1//! String validation functions
2
3/// Validates if a string contains only alphanumeric characters
4///
5/// # Examples
6///
7/// ```
8/// use validator_rs::string::is_alphanumeric;
9///
10/// assert!(is_alphanumeric("abc123"));
11/// assert!(!is_alphanumeric("abc-123"));
12/// ```
13pub fn is_alphanumeric(s: &str) -> bool {
14    !s.is_empty() && s.chars().all(|c| c.is_alphanumeric())
15}
16
17/// Validates if a string contains only alphabetic characters
18///
19/// # Examples
20///
21/// ```
22/// use validator_rs::string::is_alpha;
23///
24/// assert!(is_alpha("abcXYZ"));
25/// assert!(!is_alpha("abc123"));
26/// ```
27pub fn is_alpha(s: &str) -> bool {
28    !s.is_empty() && s.chars().all(|c| c.is_alphabetic())
29}
30
31/// Validates if a string contains only numeric characters
32///
33/// # Examples
34///
35/// ```
36/// use validator_rs::string::is_numeric;
37///
38/// assert!(is_numeric("12345"));
39/// assert!(!is_numeric("123.45"));
40/// ```
41pub fn is_numeric(s: &str) -> bool {
42    !s.is_empty() && s.chars().all(|c| c.is_ascii_digit())
43}
44
45/// Validates if a string has a minimum length
46pub fn has_min_length(s: &str, min: usize) -> bool {
47    s.len() >= min
48}
49
50/// Validates if a string has a maximum length
51pub fn has_max_length(s: &str, max: usize) -> bool {
52    s.len() <= max
53}
54
55/// Validates if a string length is within a range
56pub fn has_length_between(s: &str, min: usize, max: usize) -> bool {
57    let len = s.len();
58    len >= min && len <= max
59}
60
61/// Validates if a string contains a substring
62pub fn contains(s: &str, pattern: &str) -> bool {
63    s.contains(pattern)
64}
65
66/// Validates if a string matches a specific pattern (case-insensitive)
67pub fn contains_case_insensitive(s: &str, pattern: &str) -> bool {
68    s.to_lowercase().contains(&pattern.to_lowercase())
69}
70
71/// Validates if a string is uppercase
72pub fn is_uppercase(s: &str) -> bool {
73    !s.is_empty() && s.chars().filter(|c| c.is_alphabetic()).all(|c| c.is_uppercase())
74}
75
76/// Validates if a string is lowercase
77pub fn is_lowercase(s: &str) -> bool {
78    !s.is_empty() && s.chars().filter(|c| c.is_alphabetic()).all(|c| c.is_lowercase())
79}
80
81#[cfg(test)]
82mod tests {
83    use super::*;
84
85    #[test]
86    fn test_alphanumeric() {
87        assert!(is_alphanumeric("abc123"));
88        assert!(is_alphanumeric("ABC"));
89        assert!(!is_alphanumeric("abc-123"));
90        assert!(!is_alphanumeric(""));
91    }
92
93    #[test]
94    fn test_alpha() {
95        assert!(is_alpha("abcXYZ"));
96        assert!(!is_alpha("abc123"));
97        assert!(!is_alpha(""));
98    }
99
100    #[test]
101    fn test_numeric() {
102        assert!(is_numeric("12345"));
103        assert!(!is_numeric("123.45"));
104        assert!(!is_numeric("abc"));
105        assert!(!is_numeric(""));
106    }
107
108    #[test]
109    fn test_length_validations() {
110        assert!(has_min_length("hello", 3));
111        assert!(!has_min_length("hi", 3));
112        
113        assert!(has_max_length("hi", 5));
114        assert!(!has_max_length("hello world", 5));
115        
116        assert!(has_length_between("hello", 3, 10));
117        assert!(!has_length_between("hi", 3, 10));
118    }
119
120    #[test]
121    fn test_contains() {
122        assert!(contains("hello world", "world"));
123        assert!(!contains("hello world", "foo"));
124        
125        assert!(contains_case_insensitive("Hello World", "world"));
126        assert!(contains_case_insensitive("HELLO", "hello"));
127    }
128
129    #[test]
130    fn test_case() {
131        assert!(is_uppercase("HELLO"));
132        assert!(is_uppercase("HELLO123"));
133        assert!(!is_uppercase("Hello"));
134        
135        assert!(is_lowercase("hello"));
136        assert!(is_lowercase("hello123"));
137        assert!(!is_lowercase("Hello"));
138    }
139}
140
validator_rs/string.rs

validator_rs/
string.rs
