45 lines
1.3 KiB
Swift
45 lines
1.3 KiB
Swift
//
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// LeadingWhitespaceRule.swift
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// SwiftLint
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//
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// Created by JP Simard on 2015-05-16.
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// Copyright (c) 2015 Realm. All rights reserved.
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//
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import Foundation
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import SourceKittenFramework
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public struct LeadingWhitespaceRule: ConfigProviderRule {
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public var config = SeverityConfig(.Warning)
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public init() {}
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public static let description = RuleDescription(
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identifier: "leading_whitespace",
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name: "Leading Whitespace",
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description: "Files should not contain leading whitespace.",
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nonTriggeringExamples: [
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Trigger("//\n")
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],
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triggeringExamples: [
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Trigger("\n"),
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Trigger(" //\n")
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]
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)
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public func validateFile(file: File) -> [StyleViolation] {
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let countOfLeadingWhitespace = file.contents.countOfLeadingCharactersInSet(
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NSCharacterSet.whitespaceAndNewlineCharacterSet()
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)
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if countOfLeadingWhitespace == 0 {
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return []
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}
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return [StyleViolation(ruleDescription: self.dynamicType.description,
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severity: config.severity,
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location: Location(file: file.path, line: 1),
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reason: "File shouldn't start with whitespace: " +
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"currently starts with \(countOfLeadingWhitespace) whitespace characters")]
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}
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}
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