schematic 0.19.7

A layered serde configuration and schema library.
Documentation 
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/// Returns true if the value looks like a file, by checking for `file://`,
/// path separators, or supported file extensions.
pub fn is_file_like(value: &str) -> bool {
    value.starts_with("file://")
        || value.starts_with('/')
        || value.starts_with('\\')
        || value.starts_with('.')
        || value.contains('/')
        || value.contains('\\')
        || value.contains('.')
}

/// Returns true if the value looks like a URL, by checking for `http://`, `https://`, or `www`.
pub fn is_url_like(value: &str) -> bool {
    value.starts_with("https://") || value.starts_with("http://") || value.starts_with("www")
}

/// Returns true if the value is a secure URL, by checking for `https://`. This check can be
/// bypassed for localhost URLs.
pub fn is_secure_url(value: &str) -> bool {
    if value.contains("127.0.0.1") || value.contains("//localhost") {
        return true;
    }

    value.starts_with("https://")
}

/// Strip a leading BOM from the string.
pub fn strip_bom(content: &str) -> &str {
    content.trim_start_matches("\u{feff}")
}

/// Extract a file name from the provided file path or URL.
pub fn extract_file_name(value: &str) -> &str {
    // Remove any query string
    let value = if let Some(index) = value.rfind('?') {
        &value[0..index]
    } else {
        value
    };

    // And only check the last segment
    if let Some(index) = value.rfind('/') {
        &value[index + 1..]
    } else {
        value
    }
}

/// Extract a file extension (without period) from the provided file path or URL.
pub fn extract_file_ext(value: &str) -> Option<&str> {
    let name = extract_file_name(value);

    name.rfind('.').map(|index| &name[index + 1..])
}