diff knownplugins.cpp @ 4:6f891a9c6434

Make checker with hard-coded knowledge about various plugin types and paths; fix some process management problems

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/knownplugins.cpp	Wed Apr 13 12:00:07 2016 +0100
@@ -0,0 +1,172 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+#include "knownplugins.h"
+
+#include <sstream>
+
+using namespace std;
+
+#if defined(_WIN32)
+#define PATH_SEPARATOR ';'
+#else
+#define PATH_SEPARATOR ':'
+#endif
+
+KnownPlugins::KnownPlugins() :
+    m_candidates("./helper") //!!!??? wot to do
+{
+    m_known = {
+	{
+	    VampPlugin,
+	    {
+		"vamp",
+		expandConventionalPath(VampPlugin, "VAMP_PATH"),
+		"vampGetPluginDescriptor"
+	    },
+	}, {
+	    LADSPAPlugin,
+	    {
+		"ladspa",
+		expandConventionalPath(LADSPAPlugin, "LADSPA_PATH"),
+		"ladspa_descriptor"
+	    },
+	}, {
+	    DSSIPlugin,
+	    {
+		"dssi",
+		expandConventionalPath(DSSIPlugin, "DSSI_PATH"),
+		"dssi_descriptor"
+	    }
+	}
+    };
+
+    for (const auto &k: m_known) {
+	m_candidates.scan(k.second.tag, k.second.path, k.second.descriptor);
+    }
+}
+
+string
+KnownPlugins::getDefaultPath(PluginType type)
+{
+    switch (type) {
+
+#if defined(_WIN32)
+
+    case VampPlugin:
+	return "%ProgramFiles%\\Vamp Plugins";
+    case LADSPAPlugin:
+	return "%ProgramFiles%\\LADSPA Plugins;%ProgramFiles%\\Audacity\\Plug-Ins";
+    case DSSIPlugin:
+	return "%ProgramFiles%\\DSSI Plugins";
+	
+#elif defined(__APPLE__)
+	
+    case VampPlugin:
+	return "$HOME/Library/Audio/Plug-Ins/Vamp:/Library/Audio/Plug-Ins/Vamp";
+    case LADSPAPlugin:
+	return "$HOME/Library/Audio/Plug-Ins/LADSPA:/Library/Audio/Plug-Ins/LADSPA";
+    case DSSIPlugin:
+	return "$HOME/Library/Audio/Plug-Ins/DSSI:/Library/Audio/Plug-Ins/DSSI";
+	
+#else /* Linux, BSDs, etc */
+	
+    case VampPlugin:
+	return "$HOME/vamp:$HOME/.vamp:/usr/local/lib/vamp:/usr/lib/vamp";
+    case LADSPAPlugin:
+	return "$HOME/ladspa:$HOME/.ladspa:/usr/local/lib/ladspa:/usr/lib/ladspa";
+    case DSSIPlugin:
+	return "$HOME/dssi:$HOME/.dssi:/usr/local/lib/dssi:/usr/lib/dssi";
+#endif
+    }
+
+    throw logic_error("unknown or unhandled plugin type");
+}
+
+vector<string>
+KnownPlugins::expandConventionalPath(PluginType type, string var)
+{
+    vector<string> pathList;
+    string path;
+
+    char *cpath = getenv(var.c_str());
+    if (cpath) path = cpath;
+
+    if (path == "") {
+
+        path = getDefaultPath(type);
+
+	if (path != "") {
+
+	    char *home = getenv("HOME");
+	    if (home) {
+		string::size_type f;
+		while ((f = path.find("$HOME")) != string::npos &&
+		       f < path.length()) {
+		    path.replace(f, 5, home);
+		}
+	    }
+
+#ifdef _WIN32
+	    char *pfiles = getenv("ProgramFiles");
+	    if (!pfiles) pfiles = "C:\\Program Files";
+	    {
+		string::size_type f;
+		while ((f = path.find("%ProgramFiles%")) != string::npos &&
+		       f < path.length()) {
+		    path.replace(f, 14, pfiles);
+		}
+	    }
+#endif
+	}
+    }
+
+    string::size_type index = 0, newindex = 0;
+
+    while ((newindex = path.find(PATH_SEPARATOR, index)) < path.size()) {
+	pathList.push_back(path.substr(index, newindex - index).c_str());
+	index = newindex + 1;
+    }
+    
+    pathList.push_back(path.substr(index));
+
+    return pathList;
+}
+
+string
+KnownPlugins::getFailureReport() const
+{
+    vector<PluginCandidates::FailureRec> failures;
+
+    for (auto t: getKnownPluginTypes()) {
+	auto ff = m_candidates.getFailedLibrariesFor(getTagFor(t));
+	failures.insert(failures.end(), ff.begin(), ff.end());
+    }
+
+    if (failures.empty()) return "";
+
+    int n = failures.size();
+    int i = 0;
+
+    ostringstream os;
+    
+    os << "<ul>";
+    for (auto f: failures) {
+	os << "<li>" + f.library;
+	if (f.message != "") {
+	    os << " (" + f.message + ")";
+	} else {
+	    os << " (unknown error)";
+	}
+	os << "</li>";
+
+	if (n > 10) {
+	    if (++i == 5) {
+		os << "<li>(... and " << (n - i) << " further failures)</li>";
+		break;
+	    }
+	}
+    }
+    os << "</ul>";
+
+    return os.str();
+}