diff framework/OSCScript.h @ 654:4f53620962d9 osc-script

Toward running an OSC script in batch

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/framework/OSCScript.h	Mon Mar 25 15:49:23 2019 +0000
@@ -0,0 +1,120 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef SV_OSC_SCRIPT_H
+#define SV_OSC_SCRIPT_H
+
+#include <QThread>
+#include <QFile>
+#include <QTextStream>
+
+#include "base/Debug.h"
+#include "base/StringBits.h"
+#include "data/osc/OSCQueue.h"
+#include "data/osc/OSCMessage.h"
+
+#include <stdexcept>
+
+class OSCScript : public QThread
+{
+    Q_OBJECT
+
+public:
+    OSCScript(QString filename, OSCQueue *queue) :
+        m_filename(filename),
+        m_queue(queue),
+        m_abandoning(false) {
+    }
+
+    void run() override {
+
+        QFile f(m_filename);
+        if (!f.open(QFile::ReadOnly | QFile::Text)) {
+            SVCERR << "OSCScript: Failed to open script file \""
+                   << m_filename << "\" for reading" << endl;
+            throw std::runtime_error("OSC script file not found");
+        }
+
+        if (!m_queue) {
+            SVCERR << "OSCScript: No OSC queue available" << endl;
+            throw std::runtime_error("OSC queue not running");
+        }
+        
+        int lineno = 0;
+        QTextStream str(&f);
+        
+        while (!str.atEnd() && !m_abandoning) {
+
+            ++lineno;
+
+            QString line = str.readLine().trimmed();
+            if (line == QString()) continue;
+
+            if (line[0] == '#') {
+                continue;
+
+            } else if (line[0].isDigit()) {
+                bool ok = false;
+                float pause = line.toFloat(&ok);
+                if (ok) {
+                    SVCERR << "OSCScript: " << m_filename << ":" << lineno
+                           << ": pausing for " << pause << " sec" << endl;
+                    msleep(unsigned(round(pause * 1000.0f)));
+                    continue;
+                } else {
+                    SVCERR << "OSCScript: " << m_filename << ":" << lineno
+                           << ": error: failed to parse sleep time, giving up"
+                           << endl;
+                    throw std::runtime_error("OSC script parse error");
+                }
+
+            } else if (line[0] == '/' && line.size() > 1) {
+                QStringList parts = StringBits::splitQuoted(line, ' ');
+                if (parts.empty()) {
+                    SVCERR << "OSCScript: " << m_filename << ":" << lineno
+                           << ": warning: empty command spec, ignoring"
+                           << endl;
+                    continue;
+                }
+                OSCMessage message;
+                message.setMethod(parts[0].mid(1));
+                for (int i = 1; i < parts.size(); ++i) {
+                    message.addArg(parts[i]);
+                }
+                SVCERR << "OSCScript: " << m_filename << ":" << lineno
+                       << ": invoking: \"" << parts[0] << "\"" << endl;
+                m_queue->postMessage(message);
+
+            } else {
+                SVCERR << "OSCScript: " << m_filename << ":" << lineno
+                       << ": error: message expected" << endl;
+                throw std::runtime_error("OSC script parse error");
+            }
+        }
+
+        SVCERR << "OSCScript: " << m_filename << ": finished" << endl;
+    }
+
+    void abandon() {
+        m_abandoning = true;
+    }
+    
+private:
+    QString m_filename;
+    OSCQueue *m_queue; // I do not own this
+    bool m_abandoning;
+};
+
+#endif
+