SwiftDocC: use "portable" paths for file names

Windows restricts a CharacterSet from use in the file name.  Replace
that set with `_`.  This requires an associated change in the DocC
renderer to perform the substitution when converting the URL to a file
path.

Author: compnerd

Sources/SwiftDocC/Infrastructure/NodeURLGenerator.swift

@@ -194,7 +194,13 @@ public struct NodeURLGenerator {
                     isURLModified = true
                     name = "'\(name)"
                 }
-                
+
+                let components = name.components(separatedBy: ["<", ">", ":", "\"", "/", "\\", "|", "?", "*"])
+                if components.count > 1 {
+                    isURLModified = true
+                    name = components.joined(separator: "_")
+                }
+
                 // Shorten path components that are too long.
                 // Take the first 240 chars and append a checksum on the *complete* string.
                 if name.count >= pathComponentLengthLimit {

Tests/SwiftDocCTests/Indexing/NavigatorIndexTests.swift

@@ -706,7 +706,7 @@ Root
             XCTAssertEqual(navigatorIndex.path(for: 4), "/tutorials/testoverview")
             XCTAssertEqual(navigatorIndex.path(for: 9), "/documentation/fillintroduced/maccatalystonlydeprecated()")
             XCTAssertEqual(navigatorIndex.path(for: 10), "/documentation/fillintroduced/maccatalystonlyintroduced()")
-            XCTAssertEqual(navigatorIndex.path(for: 21), "/documentation/mykit/globalfunction(_:considering:)")
+            XCTAssertEqual(navigatorIndex.path(for: 21), "/documentation/mykit/globalfunction(__considering_)")
             XCTAssertEqual(navigatorIndex.path(for: 23), "/documentation/sidekit/uncuratedclass/angle")
 
             assertUniqueIDs(node: navigatorIndex.navigatorTree.root)

Tests/SwiftDocCTests/Indexing/RenderIndexTests.swift

@@ -96,7 +96,7 @@ final class RenderIndexTests: XCTestCase {
                             "type": "groupMarker"
                           },
                           {
-                            "path": "/documentation/mixedlanguageframework/bar/mystringfunction(_:)",
+                            "path": "/documentation/mixedlanguageframework/bar/mystringfunction(__)",
                             "title": "myStringFunction:error: (navigator title)",
                             "type": "method",
                             "children": [
@@ -324,7 +324,7 @@ final class RenderIndexTests: XCTestCase {
                           },
                           {
                             "title": "class func myStringFunction(String) throws -> String",
-                            "path": "/documentation/mixedlanguageframework/bar/mystringfunction(_:)",
+                            "path": "/documentation/mixedlanguageframework/bar/mystringfunction(__)",
                             "type": "method"
                           }
                         ]
@@ -485,7 +485,7 @@ final class RenderIndexTests: XCTestCase {
                             "type": "groupMarker"
                           },
                           {
-                            "path": "\/documentation\/mixedlanguageframework\/foo-swift.struct\/init(rawvalue:)",
+                            "path": "\/documentation\/mixedlanguageframework\/foo-swift.struct\/init(rawvalue_)",
                             "title": "init(rawValue: UInt)",
                             "type": "init"
                           },

Tests/SwiftDocCTests/LinkTargets/LinkDestinationSummaryTests.swift

@@ -276,7 +276,7 @@ class ExternalLinkableTests: XCTestCase {
             let summary = node.externallyLinkableElementSummaries(context: context, renderNode: renderNode)[0]
 
             XCTAssertEqual(summary.title, "globalFunction(_:considering:)")
-            XCTAssertEqual(summary.relativePresentationURL.absoluteString, "/documentation/mykit/globalfunction(_:considering:)")
+            XCTAssertEqual(summary.relativePresentationURL.absoluteString, "/documentation/mykit/globalfunction(__considering_)")
             XCTAssertEqual(summary.referenceURL.absoluteString, "doc://org.swift.docc.example/documentation/MyKit/globalFunction(_:considering:)")
             XCTAssertEqual(summary.language, .swift)
             XCTAssertEqual(summary.kind, .function)
@@ -486,7 +486,7 @@ class ExternalLinkableTests: XCTestCase {
             let summary = node.externallyLinkableElementSummaries(context: context, renderNode: renderNode)[0]
 
             XCTAssertEqual(summary.title, "myStringFunction(_:)")
-            XCTAssertEqual(summary.relativePresentationURL.absoluteString, "/documentation/mixedlanguageframework/bar/mystringfunction(_:)")
+            XCTAssertEqual(summary.relativePresentationURL.absoluteString, "/documentation/mixedlanguageframework/bar/mystringfunction(__)")
             XCTAssertEqual(summary.referenceURL.absoluteString, "doc://org.swift.MixedLanguageFramework/documentation/MixedLanguageFramework/Bar/myStringFunction(_:)")
             XCTAssertEqual(summary.language, .swift)
             XCTAssertEqual(summary.kind, .typeMethod)

Tests/SwiftDocCTests/Test Resources/TestBundle-RenderIndex.json

@@ -614,7 +614,7 @@
         "type" : "groupMarker"
       },
       {
-        "path" : "\/documentation\/mykit\/globalfunction(_:considering:)",
+        "path" : "\/documentation\/mykit\/globalfunction(__considering_)",
         "title" : "func globalFunction(Data, considering: Int)",
         "type" : "func"
       },
@@ -638,7 +638,7 @@
             "type" : "groupMarker"
           },
           {
-            "path" : "\/documentation\/sidekit\/sideclass\/value(_:)",
+            "path" : "\/documentation\/sidekit\/sideclass\/value(__)",
             "title" : "case Value(Int)",
             "type" : "case"
           },

Tests/SwiftDocCUtilitiesTests/ConvertActionTests.swift

@@ -324,7 +324,7 @@ class ConvertActionTests: XCTestCase {
             "/output/data/documentation/mykit/myclass/init()-3743d.json",
             "/output/data/documentation/mykit/myclass/myfunction().json",
             "/output/data/documentation/mykit/myprotocol.json",
-            "/output/data/documentation/mykit/globalfunction(_:considering:).json",
+            "/output/data/documentation/mykit/globalfunction(__considering_).json",
         ].sorted())
 
         let myKitNodeData = try XCTUnwrap(outputData["/output/data/documentation/mykit.json"])