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Parse links in profiles

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Changelog-Added: Parse links in profiles
This commit is contained in:
William Casarin 2022-12-31 13:01:04 -08:00
commit 6f5f86114b
6 changed files with 102 additions and 16 deletions
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4
damus.xcodeproj/project.pbxproj
View File

@ -49,6 +49,7 @@
4C363AA228296A7E006E126D /* SearchView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C363AA128296A7E006E126D /* SearchView.swift */; };
4C363AA428296DEE006E126D /* SearchModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C363AA328296DEE006E126D /* SearchModel.swift */; };
4C363AA828297703006E126D /* InsertSort.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C363AA728297703006E126D /* InsertSort.swift */; };
4C3A1D332960DB0500558C0F /* Markdown.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C3A1D322960DB0500558C0F /* Markdown.swift */; };
4C3AC79B28306D7B00E1F516 /* Contacts.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C3AC79A28306D7B00E1F516 /* Contacts.swift */; };
4C3AC79D2833036D00E1F516 /* FollowingView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C3AC79C2833036D00E1F516 /* FollowingView.swift */; };
4C3AC79F2833115300E1F516 /* FollowButtonView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C3AC79E2833115300E1F516 /* FollowButtonView.swift */; };
@ -203,6 +204,7 @@
4C363AA128296A7E006E126D /* SearchView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SearchView.swift; sourceTree = "<group>"; };
4C363AA328296DEE006E126D /* SearchModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SearchModel.swift; sourceTree = "<group>"; };
4C363AA728297703006E126D /* InsertSort.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = InsertSort.swift; sourceTree = "<group>"; };
4C3A1D322960DB0500558C0F /* Markdown.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Markdown.swift; sourceTree = "<group>"; };
4C3AC79A28306D7B00E1F516 /* Contacts.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Contacts.swift; sourceTree = "<group>"; };
4C3AC79C2833036D00E1F516 /* FollowingView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FollowingView.swift; sourceTree = "<group>"; };
4C3AC79E2833115300E1F516 /* FollowButtonView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FollowButtonView.swift; sourceTree = "<group>"; };
@ -527,6 +529,7 @@
4C7FF7D628233637009601DB /* Util */ = {
isa = PBXGroup;
children = (
4C3A1D322960DB0500558C0F /* Markdown.swift */,
4CEE2AF4280B29E600AB5EEF /* TimeAgo.swift */,
4CE4F8CC281352B30009DFBB /* Notifications.swift */,
4C363A8328233689006E126D /* Parser.swift */,
@ -884,6 +887,7 @@
4C90BD1A283AA67F008EE7EF /* Bech32.swift in Sources */,
E990020F2955F837003BBC5A /* EditMetadataView.swift in Sources */,
4CACA9D5280C31E100D9BBE8 /* ReplyView.swift in Sources */,
4C3A1D332960DB0500558C0F /* Markdown.swift in Sources */,
4C0A3F97280F8E02000448DE /* ThreadView.swift in Sources */,
4C06670B28FDE64700038D2A /* damus.c in Sources */,
4FE60CDD295E1C5E00105A1F /* Wallet.swift in Sources */,

43
damus/Util/Markdown.swift Normal file
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@ -0,0 +1,43 @@
//
// Markdown.swift
// damus
//
// Created by Lionello Lunesu on 2022-12-28.
//
import Foundation
public struct Markdown {
private let detector = try! NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
/// Ensure the specified URL has a scheme by prepending "https://" if it's absent.
static func withScheme(_ url: any StringProtocol) -> any StringProtocol {
return url.contains("://") ? url : "https://" + url
}
public static func parse(content: String) -> AttributedString {
// Similar to the parsing in NoteContentView
let md_opts: AttributedString.MarkdownParsingOptions =
.init(interpretedSyntax: .inlineOnlyPreservingWhitespace)
if let txt = try? AttributedString(markdown: content, options: md_opts) {
return txt
} else {
return AttributedString(stringLiteral: content)
}
}
/// Process the input text and add markdown for any embedded URLs.
public func process(_ input: String) -> AttributedString {
let matches = detector.matches(in: input, options: [], range: NSRange(location: 0, length: input.utf16.count))
var output = input
// Start with the last match, because replacing the first would invalidate all subsequent indices
for match in matches.reversed() {
guard let range = Range(match.range, in: input) else { continue }
let url = input[range]
output.replaceSubrange(range, with: "[\(url)](\(Markdown.withScheme(url)))")
}
// TODO: escape unintentional markdown
return Markdown.parse(content: output)
}
}

8
damus/Views/FollowingView.swift
View File

@ -10,7 +10,9 @@ import SwiftUI
struct FollowUserView: View {
let target: FollowTarget
let damus_state: DamusState
static let markdown = Markdown()
var body: some View {
HStack {
let pmodel = ProfileModel(pubkey: target.pubkey, damus: damus_state)
@ -23,8 +25,8 @@ struct FollowUserView: View {
VStack(alignment: .leading) {
let profile = damus_state.profiles.lookup(id: target.pubkey)
ProfileName(pubkey: target.pubkey, profile: profile, contacts: damus_state.contacts, show_friend_confirmed: false)
if let about = profile.flatMap { $0.about } {
Text(about)
if let about = profile?.about {
Text(FollowUserView.markdown.process(about))
.lineLimit(3)
.font(.footnote)
}

13
damus/Views/NoteContentView.swift
View File

@ -70,17 +70,10 @@ struct NoteContentView: View {
let size: EventViewKind
func MainContent() -> some View {
let md_opts: AttributedString.MarkdownParsingOptions =
.init(interpretedSyntax: .inlineOnlyPreservingWhitespace)
return VStack(alignment: .leading) {
if let txt = try? AttributedString(markdown: artifacts.content, options: md_opts) {
Text(txt)
.font(eventviewsize_to_font(size))
} else {
Text(artifacts.content)
.font(eventviewsize_to_font(size))
}
Text(Markdown.parse(content: artifacts.content))
.font(eventviewsize_to_font(size))
if show_images && artifacts.images.count > 0 {
ImageCarousel(urls: artifacts.images)
} else if !show_images && artifacts.images.count > 0 {

7
damus/Views/ProfileView.swift
View File

@ -152,7 +152,9 @@ struct ProfileView: View {
.environmentObject(user_settings)
}
}
static let markdown = Markdown()
var DMButton: some View {
let dm_model = damus_state.dms.lookup_or_create(profile.pubkey)
let dmview = DMChatView(damus_state: damus_state, pubkey: profile.pubkey)
@ -188,7 +190,6 @@ struct ProfileView: View {
DMButton
if profile.pubkey != damus_state.pubkey {
FollowButtonView(
target: profile.get_follow_target(),
@ -205,7 +206,7 @@ struct ProfileView: View {
ProfileNameView(pubkey: profile.pubkey, profile: data, contacts: damus_state.contacts)
.padding(.bottom)
Text(data?.about ?? "")
Text(ProfileView.markdown.process(data?.about ?? ""))
.font(.subheadline)
Divider()

43
damusTests/MarkdownTests.swift Normal file
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@ -0,0 +1,43 @@
//
// MarkdownTests.swift
// damusTests
//
// Created by Lionello Lunesu on 2022-12-28.
//
import XCTest
@testable import damus
class MarkdownTests: XCTestCase {
let md_opts: AttributedString.MarkdownParsingOptions =
.init(interpretedSyntax: .inlineOnlyPreservingWhitespace)
override func setUpWithError() throws {
// Put setup code here. This method is called before the invocation of each test method in the class.
}
override func tearDownWithError() throws {
// Put teardown code here. This method is called after the invocation of each test method in the class.
}
func test_convert_link() throws {
let helper = Markdown()
let md = helper.process("prologue https://nostr.build epilogue")
let expected = try AttributedString(markdown: "prologue [https://nostr.build](https://nostr.build) epilogue", options: md_opts)
XCTAssertEqual(md, expected)
}
func test_convert_link_no_scheme() throws {
let helper = Markdown()
let md = helper.process("prologue damus.io epilogue")
let expected = try AttributedString(markdown: "prologue [damus.io](https://damus.io) epilogue", options: md_opts)
XCTAssertEqual(md, expected)
}
func test_convert_links() throws {
let helper = Markdown()
let md = helper.process("prologue damus.io https://nostr.build epilogue")
let expected = try AttributedString(markdown: "prologue [damus.io](https://damus.io) [https://nostr.build](https://nostr.build) epilogue", options: md_opts)
XCTAssertEqual(md, expected)
}
}