Client OPDS per Calibre Web (Sailfish OS): core C++ testato, UI Silica, packaging RPM

2026-08-12 01:45:31 +02:00
commit 85b4f8e9b9
25 changed files with 1518 additions and 0 deletions
@@ -0,0 +1,123 @@
+#include "opdsparser.h"
+
+#include <QStringList>
+#include <QVariantMap>
+#include <QXmlStreamReader>
+
+static QString elementText(QXmlStreamReader &reader)
+{
+    return reader.readElementText(QXmlStreamReader::IncludeChildElements).trimmed();
+}
+
+static QVariantMap parseEntry(QXmlStreamReader &reader)
+{
+    QVariantMap entry;
+    QStringList authors;
+    QVariantList formats;
+    QString title;
+    QString summary;
+    QString id;
+    QString coverHref;
+    QString thumbHref;
+    QString navHref;
+
+    while (!reader.atEnd()) {
+        reader.readNext();
+        if (reader.tokenType() == QXmlStreamReader::EndElement
+                && reader.name() == QLatin1String("entry"))
+            break;
+        if (reader.tokenType() != QXmlStreamReader::StartElement)
+            continue;
+
+        const QStringRef name = reader.name();
+        if (name == QLatin1String("title")) {
+            title = elementText(reader);
+        } else if (name == QLatin1String("id")) {
+            id = elementText(reader);
+        } else if (name == QLatin1String("name")) {
+            const QString author = elementText(reader);
+            if (!author.isEmpty())
+                authors.append(author);
+        } else if (name == QLatin1String("content") || name == QLatin1String("summary")) {
+            if (summary.isEmpty())
+                summary = elementText(reader);
+        } else if (name == QLatin1String("link")) {
+            const QXmlStreamAttributes attrs = reader.attributes();
+            const QString rel = attrs.value(QLatin1String("rel")).toString();
+            const QString href = attrs.value(QLatin1String("href")).toString();
+            const QString type = attrs.value(QLatin1String("type")).toString();
+
+            if (rel == QLatin1String("http://opds-spec.org/image")) {
+                coverHref = href;
+            } else if (rel == QLatin1String("http://opds-spec.org/image/thumbnail")) {
+                thumbHref = href;
+            } else if (rel == QLatin1String("http://opds-spec.org/acquisition")) {
+                QVariantMap format;
+                format.insert(QStringLiteral("format"), attrs.value(QLatin1String("title")).toString());
+                format.insert(QStringLiteral("mime"), type);
+                format.insert(QStringLiteral("size"), attrs.value(QLatin1String("length")).toString().toLongLong());
+                format.insert(QStringLiteral("url"), href);
+                formats.append(format);
+            } else if (rel == QLatin1String("subsection")) {
+                if (navHref.isEmpty())
+                    navHref = href;
+            } else if (navHref.isEmpty() && type.contains(QLatin1String("opds-catalog"))) {
+                // calibre-web: i link di navigazione dell'indice non hanno rel="subsection"
+                navHref = href;
+            }
+        }
+    }
+
+    entry.insert(QStringLiteral("title"), title);
+    entry.insert(QStringLiteral("authors"), authors.join(QStringLiteral(", ")));
+    entry.insert(QStringLiteral("summary"), summary);
+    entry.insert(QStringLiteral("coverUrl"), !coverHref.isEmpty() ? coverHref : thumbHref);
+    entry.insert(QStringLiteral("formats"), formats);
+    entry.insert(QStringLiteral("id"), id);
+    entry.insert(QStringLiteral("isNavigation"), !navHref.isEmpty());
+    entry.insert(QStringLiteral("linkUrl"), navHref);
+    return entry;
+}
+
+bool OpdsParser::parse(const QByteArray &xml,
+                       QVariantList *entries,
+                       QString *nextUrl,
+                       QString *feedTitle,
+                       QString *errorMessage)
+{
+    QXmlStreamReader reader(xml);
+    QVariantList result;
+    QString next;
+    QString title;
+
+    while (!reader.atEnd()) {
+        reader.readNext();
+        if (reader.tokenType() != QXmlStreamReader::StartElement)
+            continue;
+
+        const QStringRef name = reader.name();
+        if (name == QLatin1String("entry")) {
+            result.append(parseEntry(reader));
+        } else if (name == QLatin1String("link")) {
+            const QXmlStreamAttributes attrs = reader.attributes();
+            if (attrs.value(QLatin1String("rel")).toString() == QLatin1String("next"))
+                next = attrs.value(QLatin1String("href")).toString();
+        } else if (name == QLatin1String("title") && title.isEmpty()) {
+            title = elementText(reader);
+        }
+    }
+
+    if (reader.hasError() && result.isEmpty()) {
+        if (errorMessage)
+            *errorMessage = reader.errorString();
+        return false;
+    }
+
+    if (entries)
+        *entries = result;
+    if (nextUrl)
+        *nextUrl = next;
+    if (feedTitle)
+        *feedTitle = title;
+    return true;
+}