78 lines
2.7 KiB
Swift
78 lines
2.7 KiB
Swift
import Foundation
|
|
import PathKit
|
|
|
|
#if os(Linux)
|
|
let NSFileNoSuchFileError = 4
|
|
#endif
|
|
|
|
/// A class representing a template
|
|
public class Template: ExpressibleByStringLiteral {
|
|
let environment: Environment
|
|
let tokens: [Token]
|
|
|
|
/// The name of the loaded Template if the Template was loaded from a Loader
|
|
public let name: String?
|
|
|
|
/// Create a template with a template string
|
|
public init(templateString: String, environment: Environment? = nil, name: String? = nil) {
|
|
self.environment = environment ?? Environment()
|
|
self.name = name
|
|
|
|
let lexer = Lexer(templateString: templateString)
|
|
tokens = lexer.tokenize()
|
|
}
|
|
|
|
/// Create a template with the given name inside the given bundle
|
|
@available(*, deprecated, message: "Use Environment/FileSystemLoader instead")
|
|
public convenience init(named:String, inBundle bundle:Bundle? = nil) throws {
|
|
let useBundle = bundle ?? Bundle.main
|
|
guard let url = useBundle.url(forResource: named, withExtension: nil) else {
|
|
throw NSError(domain: NSCocoaErrorDomain, code: NSFileNoSuchFileError, userInfo: nil)
|
|
}
|
|
|
|
try self.init(URL:url)
|
|
}
|
|
|
|
/// Create a template with a file found at the given URL
|
|
@available(*, deprecated, message: "Use Environment/FileSystemLoader instead")
|
|
public convenience init(URL:Foundation.URL) throws {
|
|
try self.init(path: Path(URL.path))
|
|
}
|
|
|
|
/// Create a template with a file found at the given path
|
|
@available(*, deprecated, message: "Use Environment/FileSystemLoader instead")
|
|
public convenience init(path: Path, environment: Environment? = nil, name: String? = nil) throws {
|
|
self.init(templateString: try path.read(), environment: environment, name: name)
|
|
}
|
|
|
|
// MARK: ExpressibleByStringLiteral
|
|
|
|
// Create a templaVte with a template string literal
|
|
public convenience required init(stringLiteral value: String) {
|
|
self.init(templateString: value)
|
|
}
|
|
|
|
// Create a template with a template string literal
|
|
public convenience required init(extendedGraphemeClusterLiteral value: StringLiteralType) {
|
|
self.init(stringLiteral: value)
|
|
}
|
|
|
|
// Create a template with a template string literal
|
|
public convenience required init(unicodeScalarLiteral value: StringLiteralType) {
|
|
self.init(stringLiteral: value)
|
|
}
|
|
|
|
/// Render the given template with a context
|
|
func render(_ context: Context) throws -> String {
|
|
let context = context ?? Context(environment: environment)
|
|
let parser = TokenParser(tokens: tokens, namespace: context.namespace)
|
|
let nodes = try parser.parse()
|
|
return try renderNodes(nodes, context)
|
|
}
|
|
|
|
/// Render the given template
|
|
public func render(_ dictionary: [String: Any]? = nil) throws -> String {
|
|
return try render(Context(dictionary: dictionary, environment: environment))
|
|
}
|
|
}
|