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SynthesizedResourceInterfaceProjectMapper.swift
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SynthesizedResourceInterfaceProjectMapper.swift
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import Foundation
import SwiftGenKit
import TSCBasic
import TuistCore
import TuistGraph
import TuistSupport
// swiftlint:disable:next type_name
enum SynthesizedResourceInterfaceProjectMapperError: FatalError, Equatable {
case defaultTemplateNotAvailable(ResourceSynthesizer.Parser)
var type: ErrorType {
switch self {
case .defaultTemplateNotAvailable:
return .bug
}
}
var description: String {
switch self {
case let .defaultTemplateNotAvailable(parser):
return "Default template for parser \(parser) not available."
}
}
}
/// A project mapper that synthesizes resource interfaces
public final class SynthesizedResourceInterfaceProjectMapper: ProjectMapping { // swiftlint:disable:this type_name
private let synthesizedResourceInterfacesGenerator: SynthesizedResourceInterfacesGenerating
private let contentHasher: ContentHashing
public convenience init(
contentHasher: ContentHashing
) {
self.init(
synthesizedResourceInterfacesGenerator: SynthesizedResourceInterfacesGenerator(),
contentHasher: contentHasher
)
}
init(
synthesizedResourceInterfacesGenerator: SynthesizedResourceInterfacesGenerating,
contentHasher: ContentHashing
) {
self.synthesizedResourceInterfacesGenerator = synthesizedResourceInterfacesGenerator
self.contentHasher = contentHasher
}
public func map(project: Project) throws -> (Project, [SideEffectDescriptor]) {
guard !project.options.disableSynthesizedResourceAccessors else {
return (project, [])
}
let mappings = try project.targets
.map { try mapTarget($0, project: project) }
let targets: [Target] = mappings.map(\.0)
let sideEffects: [SideEffectDescriptor] = mappings.map(\.1).flatMap { $0 }
return (project.with(targets: targets), sideEffects)
}
// MARK: - Helpers
private struct RenderedFile: Hashable {
let path: AbsolutePath
let contents: Data?
}
/// Map and generate resource interfaces for a given `Target` and `Project`
private func mapTarget(_ target: Target, project: Project) throws -> (Target, [SideEffectDescriptor]) {
guard !target.resources.isEmpty, target.supportsSources else { return (target, []) }
var target = target
let sideEffects: [SideEffectDescriptor] = try project.resourceSynthesizers
.map { resourceSynthesizer throws -> (ResourceSynthesizer, String) in
switch resourceSynthesizer.template {
case let .file(path):
let templateString = try FileHandler.shared.readTextFile(path)
return (resourceSynthesizer, templateString)
case .defaultTemplate:
return (resourceSynthesizer, try templateString(for: resourceSynthesizer.parser))
}
}
.reduce([]) { acc, current in
let (parser, templateString) = current
let interfaceTypeEffects: [SideEffectDescriptor]
(target, interfaceTypeEffects) = try renderAndMapTarget(
parser,
templateString: templateString,
target: target,
project: project
)
return acc + interfaceTypeEffects
}
return (target, sideEffects)
}
/// - Returns: Modified `Target`, side effects, input paths and output paths which can then be later used in generate script
private func renderAndMapTarget(
_ resourceSynthesizer: ResourceSynthesizer,
templateString: String,
target: Target,
project: Project
) throws -> (
target: Target,
sideEffects: [SideEffectDescriptor]
) {
let derivedPath = project.path
.appending(component: Constants.DerivedDirectory.name)
.appending(component: Constants.DerivedDirectory.sources)
let renderedInterfaces = try renderedInterfaces(
for: resourceSynthesizer,
templateString: templateString,
target: target,
project: project
)
let renderedResources = Set(
renderedInterfaces.map { name, contents in
RenderedFile(
path: derivedPath.appending(component: name + ".swift"),
contents: contents.data(using: .utf8)
)
}
)
var target = target
target.sources += try renderedResources
.map { resource in
let hash = try resource.contents.map(contentHasher.hash)
return SourceFile(path: resource.path, contentHash: hash)
}
let sideEffects = renderedResources
.map { FileDescriptor(path: $0.path, contents: $0.contents) }
.map(SideEffectDescriptor.file)
return (
target: target,
sideEffects: sideEffects
)
}
private func paths(
for resourceSynthesizer: ResourceSynthesizer,
target: Target,
defaultKnownRegions: [String]?,
developmentRegion: String?
) -> [AbsolutePath] {
let resourcesPaths = target.resources
.map(\.path)
var paths = resourcesPaths
.filter { $0.extension.map(resourceSynthesizer.extensions.contains) ?? false }
.sorted()
switch resourceSynthesizer.parser {
case .strings:
// This file kind is localizable, let's order files based on it
var regionPriorityQueue = defaultKnownRegions ?? ["Base", "en"]
if let developmentRegion = developmentRegion {
regionPriorityQueue.insert(developmentRegion, at: 0)
}
// Let's sort paths moving the development region localization's one at first
let prioritizedPaths = paths.filter { path in
regionPriorityQueue.map { path.parentDirectory.basename.contains($0) }.contains(true)
}
let unprioritizedPaths = paths.filter { path in
!regionPriorityQueue.map { path.parentDirectory.basename.contains($0) }.contains(true)
}
paths = prioritizedPaths + unprioritizedPaths
case .assets, .coreData, .fonts, .interfaceBuilder, .json, .plists, .yaml, .files:
break
}
var seen: Set<String> = []
return paths.filter { seen.insert($0.basename).inserted }
}
private func isResourceEmpty(_ path: AbsolutePath) throws -> Bool {
if FileHandler.shared.isFolder(path) {
if try !FileHandler.shared.contentsOfDirectory(path).isEmpty { return true }
} else {
if try !FileHandler.shared.readFile(path).isEmpty { return true }
}
logger.log(
level: .warning,
"Skipping synthesizing accessors for \(path.pathString) because its contents are empty."
)
return false
}
private func templateString(for parser: ResourceSynthesizer.Parser) throws -> String {
switch parser {
case .assets:
return SynthesizedResourceInterfaceTemplates.assetsTemplate
case .strings:
return SynthesizedResourceInterfaceTemplates.stringsTemplate
case .plists:
return SynthesizedResourceInterfaceTemplates.plistsTemplate
case .fonts:
return SynthesizedResourceInterfaceTemplates.fontsTemplate
case .coreData, .interfaceBuilder, .json, .yaml:
throw SynthesizedResourceInterfaceProjectMapperError.defaultTemplateNotAvailable(parser)
case .files:
return SynthesizedResourceInterfaceTemplates.filesTemplate
}
}
private func renderedInterfaces(
for resourceSynthesizer: ResourceSynthesizer,
templateString: String,
target: Target,
project: Project
) throws -> [(String, String)] {
let paths = try paths(
for: resourceSynthesizer,
target: target,
defaultKnownRegions: project.defaultKnownRegions,
developmentRegion: project.developmentRegion
)
.filter(isResourceEmpty)
let templateName: String
switch resourceSynthesizer.template {
case let .defaultTemplate(name):
templateName = name
case let .file(path):
templateName = path.basenameWithoutExt
}
let renderedInterfaces: [(String, String)]
if paths.isEmpty {
renderedInterfaces = []
} else {
let name = target.name.camelized.uppercasingFirst
renderedInterfaces = [
(
"Tuist\(templateName)+\(name)",
try synthesizedResourceInterfacesGenerator.render(
parser: resourceSynthesizer.parser,
templateString: templateString,
name: target.productName.camelized.uppercasingFirst,
bundleName: project.options.disableBundleAccessors ? nil : "Bundle.module",
paths: paths
)
),
]
}
return renderedInterfaces
}
}