Init: Add magic.js from online converter openrc.run

See http://openrc.run/

magic.js

@@ -0,0 +1,319 @@
+function parseINIString(data) {
+    var regex = {
+        section: /^\s*\[\s*([^\]]*)\s*\]\s*$/,
+        param: /^\s*([^=]+?)\s*=\s*(.*?)\s*$/,
+        comment: /^\s*;.*$/
+    };
+    var value = {};
+    var lines = data.split(/[\r\n]+/);
+    var section = null;
+    lines.forEach(function (line) {
+        if (regex.comment.test(line)) {
+            return;
+        } else if (regex.param.test(line)) {
+            var match = line.match(regex.param);
+            if (section) {
+                value[section][match[1]] = match[2];
+            } else {
+                value[match[1]] = match[2];
+            }
+        } else if (regex.section.test(line)) {
+            var match = line.match(regex.section);
+            value[match[1]] = {};
+            section = match[1];
+        } else if (line.length == 0 && section) {
+            section = null;
+        }
+    });
+    return value;
+}
+
+function parseEnvironment(raw) {
+    var parts = raw.match(/\S+|"[^"]+"/g)
+    console.log(parts);
+    var result = {};
+    for (var i = 0; i < parts.length; i++) {
+        var key = parts[i].substr(0, parts[i].indexOf('='));
+        console.log("Key is", key);
+        result[key] = parts[i].substr(parts[i].indexOf('=') + 1);
+    }
+    return result;
+}
+
+function validate(parsed) {
+    if (!parsed.hasOwnProperty('Service')) {
+        return "No [Service] section found";
+    }
+
+    if (parsed.Service.hasOwnProperty('EnvironmentFile')) {
+        return "Environment= is not supported in openrc";
+    }
+
+
+    return null;
+}
+
+function unitToRC(name) {
+    var table = {
+        "network.target": "net",
+        "remote-fs.target": "netmount",
+        "nss-lookup.target": "dns"
+    }
+
+    if (table.hasOwnProperty(name)) {
+        return table[name];
+    } else {
+        return name.substr(0, name.indexOf('.'));
+    }
+}
+
+function unitsToRC(units) {
+    var names = units.split(/[ ]+/);
+    var result = "";
+    console.log(names);
+    for (var i = 0; i < names.length; i++) {
+        result += unitToRC(names[i]) + " ";
+    }
+    return result;
+}
+
+function generateDepend(unit) {
+    var depend = "";
+    if (unit.Unit.hasOwnProperty('After')) {
+        depend += "\tafter " + unitsToRC(unit.Unit.After) + "\n";
+    }
+    if (unit.Unit.hasOwnProperty('Before')) {
+        depend += "\tbefore " + unitsToRC(unit.Unit.Before) + "\n";
+    }
+    if (unit.Unit.hasOwnProperty('Requires')) {
+        depend += "\tneed " + unitsToRC(unit.Unit.Requires) + "\n";
+    }
+    if (unit.Unit.hasOwnProperty('Wants')) {
+        depend += "\tuse " + unitsToRC(unit.Unit.Wants) + "\n";
+    }
+
+    if (depend.length > 0) {
+        return "\ndepend() {\n" + depend + "}\n";
+    }
+    return "";
+}
+
+function generateSuperviseArgs(unit) {
+    var result = "";
+    if (unit.Service.hasOwnProperty('WorkingDirectory')) {
+        result += ' -d ' + unit.Service.WorkingDirectory;
+    }
+
+    if (unit.Service.hasOwnProperty('RootDirectory')) {
+        result += ' -r ' + unit.Service.RootDirectory;
+    }
+
+    if (unit.Service.hasOwnProperty('UMask')) {
+        result += ' -k ' + unit.Service.UMask;
+    }
+
+    if (unit.Service.hasOwnProperty('Nice')) {
+        result += ' -N ' + unit.Service.Nice;
+    }
+
+    if (unit.Service.hasOwnProperty('IOSchedulingClass')) {
+        if (unit.Service.hasOwnProperty('IOSchedulingPriority')) {
+            result += ' -I ' + unit.Service.IOSchedulingClass + ":" + unit.Service.IOSchedulingPriority;
+        } else {
+            result += ' -I ' + unit.Service.IOSchedulingClass;
+        }
+    }
+
+    if (unit.Service.hasOwnProperty('StandardOutput')) {
+        if (unit.Service.StandardOutput.substr(0, 5) === "file:") {
+            result += ' -1 ' + unit.Service.StandardOutput.substr(5);
+
+            if (!unit.Service.hasOwnProperty('StandardError')) {
+                unit.Service.StandardError = unit.Service.StandardOutput;
+            }
+        }
+    }
+
+    if (unit.Service.hasOwnProperty('StandardError')) {
+        if (unit.Service.StandardError.substr(0, 5) === "file:") {
+            result += ' -2 ' + unit.Service.StandardError.substr(5);
+        }
+    }
+
+    if (unit.Service.hasOwnProperty('Environment')) {
+        var env = parseEnvironment(unit.Service.Environment);
+        for (var key in env) {
+            if (env.hasOwnProperty(key)) {
+                result += ' -e ' + key + '=\\"' + env[key] + '\\"';
+                console.log(key, env[key]);
+            }
+        }
+    }
+
+    if (result.length > 0) {
+        return 'supervise_daemon_args="' + result + '"\n';
+    } else {
+        return '';
+    }
+}
+
+
+function generateSSDArgs(unit) {
+    var result = "";
+    if (unit.Service.hasOwnProperty('WorkingDirectory')) {
+        result += ' -d ' + unit.Service.WorkingDirectory;
+    }
+
+    if (unit.Service.hasOwnProperty('RootDirectory')) {
+        result += ' -r ' + unit.Service.RootDirectory;
+    }
+
+    if (unit.Service.hasOwnProperty('UMask')) {
+        result += ' -k ' + unit.Service.UMask;
+    }
+
+    if (unit.Service.hasOwnProperty('Nice')) {
+        result += ' -N ' + unit.Service.Nice;
+    }
+
+    if (unit.Service.hasOwnProperty('IOSchedulingClass')) {
+        if (unit.Service.hasOwnProperty('IOSchedulingPriority')) {
+            result += ' -I ' + unit.Service.IOSchedulingClass + ":" + unit.Service.IOSchedulingPriority;
+        } else {
+            result += ' -I ' + unit.Service.IOSchedulingClass;
+        }
+    }
+
+    if (unit.Service.hasOwnProperty('CPUSchedulingPolicy')) {
+        if (unit.Service.hasOwnProperty('CPUSchedulingPriority')) {
+            result += ' -I ' + unit.Service.CPUSchedulingPolicy + ":" + unit.Service.CPUSchedulingPriority;
+        } else {
+            result += ' -I ' + unit.Service.CPUSchedulingPolicy;
+        }
+    }
+
+    if (result.length > 0) {
+        return 'start_stop_daemon_args="' + result + '"\n';
+    } else {
+        return '';
+    }
+}
+
+function generateForking(unit) {
+    var cmd = unit.Service.ExecStart;
+    var pidfile = unit.Service.PIDFile;
+    var executable = cmd.substr(0, cmd.indexOf(' '));
+    var args = cmd.substr(cmd.indexOf(' ') + 1);
+    var result = "";
+    result += 'command="' + executable + '"\n';
+    result += 'command_args="' + args + '"\n';
+    result += 'pidfile="' + pidfile + '"\n';
+    return result;
+}
+
+function generateSimple(unit) {
+    var cmd = unit.Service.ExecStart;
+    var executable = cmd.substr(0, cmd.indexOf(' '));
+    var args = cmd.substr(cmd.indexOf(' ') + 1);
+    var result = "";
+    result += 'supervisor="supervise-daemon"\n';
+    result += 'command="' + executable + '"\n';
+    result += 'command_args="' + args + '"\n';
+    return result;
+}
+
+function generateOneshot(unit) {
+    var cmd = unit.Service.ExecStart;
+    var executable = cmd.substr(0, cmd.indexOf(' '));
+    var args = cmd.substr(cmd.indexOf(' ') + 1);
+    var result = "";
+    result += 'command="' + executable + '"\n';
+    result += 'command_args="' + args + '"\n';
+    return result;
+}
+
+function generateUser(unit) {
+    if (unit.Service.hasOwnProperty('User')) {
+        if (unit.Service.hasOwnProperty('Group')) {
+            return 'command_user="' + unit.Service.User + ':' + unit.Service.Group + '"\n'
+        } else {
+            return 'command_user="' + unit.Service.User + '"\n'
+        }
+    }
+    return "";
+}
+
+function generateStop(unit) {
+    if (!unit.Service.hasOwnProperty('ExecStop')) {
+        return "";
+    }
+
+    var result = "\nstop() {\n";
+    result += '\tebegin "Stopping $RC_SVCNAME"\n';
+    result += '\t' + unit.Service.ExecStop + '\n';
+    result += '\teend $?\n';
+    result += "}\n";
+    return result;
+}
+
+function generateReload(unit) {
+    if (!unit.Service.hasOwnProperty('ExecReload')) {
+        return "";
+    }
+
+    var result = "\nreload() {\n";
+    result += '\tebegin "Reloading $RC_SVCNAME"\n';
+    result += '\t' + unit.Service.ExecReload + '\n';
+    result += '\teend $?\n';
+    result += "}\n";
+    return result;
+}
+
+
+function convert(event) {
+    event.preventDefault();
+    var raw = document.getElementById('unit').value;
+    var parsed = parseINIString(raw);
+    var validated = validate(parsed);
+    if (validated !== null) {
+        document.getElementById('error').innerHTML = validated;
+        return;
+    } else {
+        document.getElementById('error').innerHTML = '';
+    }
+    console.log(parsed);
+
+    var result = '#!/sbin/openrc-run\n\nname=$RC_SVCNAME\ndescription="' + parsed.Unit.Description + '"\n';
+
+    if (!parsed.Service.hasOwnProperty('Type')) {
+        var type = 'simple';
+    } else {
+        var type = parsed.Service.Type;
+    }
+    console.log("Generating " + type + " unit");
+    switch (type) {
+        case "simple":
+        case "exec":
+            result += generateSimple(parsed);
+            result += generateSuperviseArgs(parsed);
+            break;
+        case "oneshot":
+            result += generateOneshot(parsed);
+            result += generateSSDArgs(parsed);
+            break;
+        case "forking":
+            result += generateForking(parsed);
+            result += generateSSDArgs(parsed);
+            break;
+    }
+    result += generateUser(parsed);
+    result += generateDepend(parsed);
+    result += generateStop(parsed);
+    result += generateReload(parsed);
+
+    document.getElementById('openrc').innerText = result;
+}
+
+document.addEventListener("DOMContentLoaded", function () {
+    document.getElementById('convert').addEventListener('click', convert);
+});