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9 Commits

Author SHA1 Message Date
Julien Lengrand-Lambert
7c39a0e1aa Moar tests. Gotta look into CodeCov settings 2025-06-09 09:00:26 +02:00
Julien Lengrand-Lambert
5ca4c73855 TY AI for improving coverage 2025-06-09 08:35:48 +02:00
Julien Lengrand-Lambert
e9ef223e9a Corrects README 2025-06-09 08:28:40 +02:00
Julien Lengrand-Lambert
67e3cc940b Adds Generator 2025-06-09 08:26:19 +02:00
Julien Lengrand-Lambert
58abce8cb1 Updates version 2025-06-08 19:49:30 +02:00
Julien Lengrand-Lambert
91da68172f Lining up the version 2025-06-08 14:23:58 +02:00
renovate[bot]
d7cef1714e Update dependency gradle to v8.14.2 (#28)
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
2025-06-08 14:17:12 +02:00
renovate[bot]
9d94d22a5e Update dependency org.junit:junit-bom to v5.13.1 (#25)
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
2025-06-08 14:17:02 +02:00
julien Lengrand-Lambert
3c0eed60a7 Makes library multiplatform (#27)
* Replaces JSoup by Ksoup
2025-06-08 14:16:48 +02:00
10 changed files with 1786 additions and 27 deletions

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@@ -9,13 +9,12 @@
![GitHub code size in bytes](https://img.shields.io/github/languages/code-size/jlengrand/OpenGraphKt)
[OpenGraphKt](https://github.com/jlengrand/OpenGraphKt) is a minimalist Kotlin library to work with the [Open Graph tags](https://ogp.me/) protocol.
[OpenGraphKt](https://github.com/jlengrand/OpenGraphKt) is a minimalist Kotlin multiplatform library to work with the [Open Graph tags](https://ogp.me/) protocol.
OpenGraphKt is a tiny wrapper on top of JSoup.
## Current status
* Library can extract OpenGraph tags from HTML via a `URL`, `String` or `File` input.
* Current implementation is JVM only, due to the `JSoup` dependency.
* Protocol implementation is complete for `og:` tags, but types aren't fully correct (most types currently are `String`).
* Library should be considered in pre-alpha, use this in production at your own risks :).
@@ -28,7 +27,7 @@ In short :
* Add dependency to your Maven / Gradle file. For example :
```bash
implementation("fr.lengrand:opengraphkt:0.0.2")
implementation("fr.lengrand:opengraphkt:0.1.0")
```
* Enjoy:
@@ -44,11 +43,6 @@ println("Is valid: ${openGraphDataDoc.isValid()}")
// Is valid: true
```
## Dependencies
- [JSoup](https://jsoup.org/)
## Author
* [Julien Lengrand-Lambert](https://github.com/jlengrand)

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@@ -10,7 +10,7 @@ repositories {
}
dependencies {
implementation("fr.lengrand:opengraphkt:0.0.2")
implementation("fr.lengrand:opengraphkt:0.1.0")
testImplementation(kotlin("test"))
}

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@@ -12,7 +12,9 @@ repositories {
}
dependencies {
implementation("org.jsoup:jsoup:1.20.1")
implementation("com.fleeksoft.ksoup:ksoup:0.2.4")
implementation("com.fleeksoft.ksoup:ksoup-kotlinx:0.2.4")
implementation("com.fleeksoft.ksoup:ksoup-network:0.2.4")
implementation(project(":opengraphkt"))
testImplementation(kotlin("test"))
}

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@@ -1,6 +1,6 @@
package fr.lengrand.opengraphkt
import org.jsoup.Jsoup
import com.fleeksoft.ksoup.Ksoup
import java.io.File
import java.net.URI
@@ -25,7 +25,7 @@ fun main() {
println("\nExample 2: Parsing from File")
try {
val resourceUrl = object {}.javaClass.getResource("/example.html")
val resourceFile = File(resourceUrl.toURI())
val resourceFile = File(resourceUrl!!.toURI())
// Parse the file
val openGraphData = parser.parse(resourceFile)
@@ -66,7 +66,7 @@ fun main() {
// Example 4: Parse Open Graph data from a Jsoup Document
println("\nExample 4: Parsing from JSoup Document")
val doc = Jsoup.parse(html)
val doc = Ksoup.parse(html)
val openGraphDataDoc = parser.parse(doc)
println("Title: ${openGraphDataDoc.title}")

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@@ -1,6 +1,6 @@
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.1-bin.zip
distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.2-bin.zip
networkTimeout=10000
validateDistributionUrl=true
zipStoreBase=GRADLE_USER_HOME

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@@ -7,14 +7,16 @@ plugins {
}
group = "fr.lengrand"
version = "0.0.3-SNAPSHOT"
version = "0.1.1-SNAPSHOT"
repositories {
mavenCentral()
}
dependencies {
implementation("org.jsoup:jsoup:1.20.1")
implementation("com.fleeksoft.ksoup:ksoup:0.2.4")
implementation("com.fleeksoft.ksoup:ksoup-kotlinx:0.2.4")
implementation("com.fleeksoft.ksoup:ksoup-network:0.2.4")
testImplementation(kotlin("test"))
}

View File

@@ -0,0 +1,337 @@
package fr.lengrand.opengraphkt
import java.time.OffsetDateTime
/**
* A generator for Open Graph protocol HTML meta tags.
*
* This class converts an OpenGraph Data object into HTML meta tags according to the Open Graph protocol specification.
* It can be used to generate the appropriate meta tags for embedding in HTML documents.
*
* @see <a href="https://ogp.me/">Open Graph Protocol</a>
*/
class Generator {
/**
* Generates HTML meta tags from an OpenGraph Data object.
*
* @param data The OpenGraph Data object to convert to HTML meta tags
* @return A string containing the HTML meta tags
*/
fun generate(data: Data): String {
val tags = mutableListOf<String>()
// Add basic metadata tags
addBasicMetaTags(data, tags)
// Add image tags
addImageTags(data.images, tags)
// Add video tags
addVideoTags(data.videos, tags)
// Add audio tags
addAudioTags(data.audios, tags)
// Add type-specific tags
when (data.getType()) {
Type.ARTICLE -> addArticleTags(data.article, tags)
Type.PROFILE -> addProfileTags(data.profile, tags)
Type.BOOK -> addBookTags(data.book, tags)
Type.MUSIC_SONG -> addMusicSongTags(data.musicSong, tags)
Type.MUSIC_ALBUM -> addMusicAlbumTags(data.musicAlbum, tags)
Type.MUSIC_PLAYLIST -> addMusicPlaylistTags(data.musicPlaylist, tags)
Type.MUSIC_RADIO_STATION -> addMusicRadioStationTags(data.musicRadioStation, tags)
Type.VIDEO_MOVIE, Type.VIDEO_TV_SHOW, Type.VIDEO_OTHER -> addVideoMovieTags(data.videoMovie, tags)
Type.VIDEO_EPISODE -> addVideoEpisodeTags(data.videoEpisode, tags)
else -> { /* No additional tags for other types */ }
}
return tags.joinToString("\n")
}
/**
* Adds basic Open Graph meta tags to the list.
*
* @param data The OpenGraph Data object
* @param tags The list to add the tags to
*/
private fun addBasicMetaTags(data: Data, tags: MutableList<String>) {
// Required properties
data.title?.let { tags.add(createMetaTag("og:title", it)) }
data.type?.let { tags.add(createMetaTag("og:type", it)) }
data.url?.let { tags.add(createMetaTag("og:url", it.toString())) }
// Optional properties
data.description?.let { tags.add(createMetaTag("og:description", it)) }
data.siteName?.let { tags.add(createMetaTag("og:site_name", it)) }
data.determiner?.let { tags.add(createMetaTag("og:determiner", it)) }
data.locale?.let { tags.add(createMetaTag("og:locale", it)) }
// Locale alternates
data.localeAlternate.forEach { locale ->
tags.add(createMetaTag("og:locale:alternate", locale))
}
}
/**
* Adds image meta tags to the list.
*
* @param images The list of Image objects
* @param tags The list to add the tags to
*/
private fun addImageTags(images: List<Image>, tags: MutableList<String>) {
images.forEach { image ->
image.url?.let { tags.add(createMetaTag("og:image", it)) }
image.secureUrl?.let { tags.add(createMetaTag("og:image:secure_url", it)) }
image.type?.let { tags.add(createMetaTag("og:image:type", it)) }
image.width?.let { tags.add(createMetaTag("og:image:width", it.toString())) }
image.height?.let { tags.add(createMetaTag("og:image:height", it.toString())) }
image.alt?.let { tags.add(createMetaTag("og:image:alt", it)) }
}
}
/**
* Adds video meta tags to the list.
*
* @param videos The list of Video objects
* @param tags The list to add the tags to
*/
private fun addVideoTags(videos: List<Video>, tags: MutableList<String>) {
videos.forEach { video ->
video.url?.let { tags.add(createMetaTag("og:video", it)) }
video.secureUrl?.let { tags.add(createMetaTag("og:video:secure_url", it)) }
video.type?.let { tags.add(createMetaTag("og:video:type", it)) }
video.width?.let { tags.add(createMetaTag("og:video:width", it.toString())) }
video.height?.let { tags.add(createMetaTag("og:video:height", it.toString())) }
video.duration?.let { tags.add(createMetaTag("og:video:duration", it.toString())) }
}
}
/**
* Adds audio meta tags to the list.
*
* @param audios The list of Audio objects
* @param tags The list to add the tags to
*/
private fun addAudioTags(audios: List<Audio>, tags: MutableList<String>) {
audios.forEach { audio ->
audio.url?.let { tags.add(createMetaTag("og:audio", it)) }
audio.secureUrl?.let { tags.add(createMetaTag("og:audio:secure_url", it)) }
audio.type?.let { tags.add(createMetaTag("og:audio:type", it)) }
}
}
/**
* Adds article-specific meta tags to the list.
*
* @param article The Article object
* @param tags The list to add the tags to
*/
private fun addArticleTags(article: Article?, tags: MutableList<String>) {
if (article == null) return
article.publishedTime?.let { tags.add(createMetaTag("og:article:published_time", formatDateTime(it))) }
article.modifiedTime?.let { tags.add(createMetaTag("og:article:modified_time", formatDateTime(it))) }
article.expirationTime?.let { tags.add(createMetaTag("og:article:expiration_time", formatDateTime(it))) }
article.section?.let { tags.add(createMetaTag("og:article:section", it)) }
article.authors.forEach { author ->
tags.add(createMetaTag("og:article:author", author))
}
article.tags.forEach { tag ->
tags.add(createMetaTag("og:article:tag", tag))
}
}
/**
* Adds profile-specific meta tags to the list.
*
* @param profile The Profile object
* @param tags The list to add the tags to
*/
private fun addProfileTags(profile: Profile?, tags: MutableList<String>) {
if (profile == null) return
profile.firstName?.let { tags.add(createMetaTag("og:profile:first_name", it)) }
profile.lastName?.let { tags.add(createMetaTag("og:profile:last_name", it)) }
profile.username?.let { tags.add(createMetaTag("og:profile:username", it)) }
profile.gender?.let { tags.add(createMetaTag("og:profile:gender", it.toString())) }
}
/**
* Adds book-specific meta tags to the list.
*
* @param book The Book object
* @param tags The list to add the tags to
*/
private fun addBookTags(book: Book?, tags: MutableList<String>) {
if (book == null) return
book.authors.forEach { author ->
tags.add(createMetaTag("og:book:author", author))
}
book.isbn?.let { tags.add(createMetaTag("og:book:isbn", it)) }
book.releaseDate?.let { tags.add(createMetaTag("og:book:release_date", formatDateTime(it))) }
book.tags.forEach { tag ->
tags.add(createMetaTag("og:book:tag", tag))
}
}
/**
* Adds music.song-specific meta tags to the list.
*
* @param musicSong The MusicSong object
* @param tags The list to add the tags to
*/
private fun addMusicSongTags(musicSong: MusicSong?, tags: MutableList<String>) {
if (musicSong == null) return
musicSong.duration?.let { tags.add(createMetaTag("og:music:duration", it.toString())) }
musicSong.album?.let { tags.add(createMetaTag("og:music:album", it)) }
musicSong.albumDisc?.let { tags.add(createMetaTag("og:music:album:disc", it.toString())) }
musicSong.albumTrack?.let { tags.add(createMetaTag("og:music:album:track", it.toString())) }
musicSong.musician.forEach { musician ->
tags.add(createMetaTag("og:music:musician", musician))
}
}
/**
* Adds music.album-specific meta tags to the list.
*
* @param musicAlbum The MusicAlbum object
* @param tags The list to add the tags to
*/
private fun addMusicAlbumTags(musicAlbum: MusicAlbum?, tags: MutableList<String>) {
if (musicAlbum == null) return
musicAlbum.songs.forEach { song ->
tags.add(createMetaTag("og:music:song", song))
}
musicAlbum.songDisc?.let { tags.add(createMetaTag("og:music:song:disc", it.toString())) }
musicAlbum.songTrack?.let { tags.add(createMetaTag("og:music:song:track", it.toString())) }
musicAlbum.musician.forEach { musician ->
tags.add(createMetaTag("og:music:musician", musician))
}
musicAlbum.releaseDate?.let { tags.add(createMetaTag("og:music:release_date", formatDateTime(it))) }
}
/**
* Adds music.playlist-specific meta tags to the list.
*
* @param musicPlaylist The MusicPlaylist object
* @param tags The list to add the tags to
*/
private fun addMusicPlaylistTags(musicPlaylist: MusicPlaylist?, tags: MutableList<String>) {
if (musicPlaylist == null) return
musicPlaylist.songs.forEach { song ->
tags.add(createMetaTag("og:music:song", song))
}
musicPlaylist.songDisc?.let { tags.add(createMetaTag("og:music:song:disc", it.toString())) }
musicPlaylist.songTrack?.let { tags.add(createMetaTag("og:music:song:track", it.toString())) }
musicPlaylist.creator?.let { tags.add(createMetaTag("og:music:creator", it)) }
}
/**
* Adds music.radio_station-specific meta tags to the list.
*
* @param musicRadioStation The MusicRadioStation object
* @param tags The list to add the tags to
*/
private fun addMusicRadioStationTags(musicRadioStation: MusicRadioStation?, tags: MutableList<String>) {
if (musicRadioStation == null) return
musicRadioStation.creator?.let { tags.add(createMetaTag("og:music:creator", it)) }
}
/**
* Adds video.movie-specific meta tags to the list.
*
* @param videoMovie The VideoMovie object
* @param tags The list to add the tags to
*/
private fun addVideoMovieTags(videoMovie: VideoMovie?, tags: MutableList<String>) {
if (videoMovie == null) return
videoMovie.actors.forEach { actor ->
tags.add(createMetaTag("og:video:actor", actor))
}
videoMovie.director.forEach { director ->
tags.add(createMetaTag("og:video:director", director))
}
videoMovie.writer.forEach { writer ->
tags.add(createMetaTag("og:video:writer", writer))
}
videoMovie.duration?.let { tags.add(createMetaTag("og:video:duration", it.toString())) }
videoMovie.releaseDate?.let { tags.add(createMetaTag("og:video:release_date", formatDateTime(it))) }
videoMovie.tags.forEach { tag ->
tags.add(createMetaTag("og:video:tag", tag))
}
}
/**
* Adds video.episode-specific meta tags to the list.
*
* @param videoEpisode The VideoEpisode object
* @param tags The list to add the tags to
*/
private fun addVideoEpisodeTags(videoEpisode: VideoEpisode?, tags: MutableList<String>) {
if (videoEpisode == null) return
videoEpisode.actors.forEach { actor ->
tags.add(createMetaTag("og:video:actor", actor))
}
videoEpisode.director.forEach { director ->
tags.add(createMetaTag("og:video:director", director))
}
videoEpisode.writer.forEach { writer ->
tags.add(createMetaTag("og:video:writer", writer))
}
videoEpisode.duration?.let { tags.add(createMetaTag("og:video:duration", it.toString())) }
videoEpisode.releaseDate?.let { tags.add(createMetaTag("og:video:release_date", formatDateTime(it))) }
videoEpisode.tags.forEach { tag ->
tags.add(createMetaTag("og:video:tag", tag))
}
videoEpisode.series?.let { tags.add(createMetaTag("og:video:series", it)) }
}
/**
* Creates an HTML meta tag with the given property and content.
*
* @param property The property attribute value
* @param content The content attribute value
* @return The HTML meta tag string
*/
private fun createMetaTag(property: String, content: String): String {
val escapedContent = content.replace("\"", "&quot;")
return "<meta property=\"$property\" content=\"$escapedContent\" />"
}
/**
* Formats an OffsetDateTime to a string suitable for OpenGraph tags.
*
* @param dateTime The OffsetDateTime to format
* @return The formatted date string in ISO-8601 format with 'Z' timezone indicator
*/
private fun formatDateTime(dateTime: OffsetDateTime): String {
return dateTime.toInstant().toString()
}
}

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@@ -1,8 +1,11 @@
package fr.lengrand.opengraphkt
import org.jsoup.Jsoup
import org.jsoup.nodes.Document
import org.jsoup.select.Elements
import com.fleeksoft.ksoup.Ksoup
import com.fleeksoft.ksoup.network.parseGetRequestBlocking
import com.fleeksoft.ksoup.nodes.Document
import com.fleeksoft.ksoup.parseFile
import com.fleeksoft.ksoup.select.Elements
import kotlinx.coroutines.runBlocking
import java.io.File
import java.net.URI
import java.net.URL
@@ -61,21 +64,20 @@ class Parser {
* Extracts all Open Graph tags from a URL and returns a structured Data object.
*
* @param url The URL to be parsed for Open Graph information.
* @return An Data object containing all extracted Open Graph data.
* @return A Data object containing all extracted Open Graph data.
*/
fun parse(url: URL) : Data {
val doc = Jsoup.connect(url.toString()).get()
return parse(doc)
return parse(Ksoup.parseGetRequestBlocking(url.toString()))
}
/**
* Extracts all Open Graph tags from a raw HTML String and returns a structured Data object.
*
* @param html The raw HTML String to be parsed for Open Graph information.
* @return An Data object containing all extracted Open Graph data.
* @return A Data object containing all extracted Open Graph data.
*/
fun parse(html: String) : Data {
val doc = Jsoup.parse(html)
val doc = Ksoup.parse(html)
return parse(doc)
}
@@ -84,10 +86,12 @@ class Parser {
*
* @param file The file to parse
* @param charset The charset to use for parsing (default is UTF-8)
* @return An Data object containing all extracted Open Graph data.
* @return A Data object containing all extracted Open Graph data.
*/
fun parse(file: File, charset: String = "UTF-8") : Data {
val doc = Jsoup.parse(file, charset)
val doc = runBlocking {
Ksoup.parseFile(file, file.absolutePath, charset)
}
return parse(doc)
}

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@@ -11,7 +11,7 @@ repositories {
}
dependencies {
testImplementation(platform("org.junit:junit-bom:5.10.0"))
testImplementation(platform("org.junit:junit-bom:5.13.1"))
testImplementation("org.junit.jupiter:junit-jupiter")
implementation(kotlin("stdlib-jdk8"))