1 files changed, 134 insertions, 0 deletions
diff --git a/source/session.d b/source/session.d
new file mode 100644
index 0000000..21a0d2f
--- /dev/null
+++ b/source/session.d
@@ -0,0 +1,134 @@
+module session;
+
+import core.stdc.stdlib : exit, EXIT_FAILURE;
+import std.array;
+import std.file;
+import std.stdio;
+import std.string;
+import util;
+import dyaml;
+
+
+struct Session_t {
+    string delivery_name;
+    string delivery_version;
+    ubyte delivery_rev;
+    string delivery_platform;
+    string delivery_python;
+    string delivery;
+    string base_spec;
+    string on_error;
+    string script_pre;
+    string script_post;
+    string[string] runtime;
+    string[] conda_channels;
+    string[] conda_requirements;
+    string[] pip_index;
+    string[] pip_requirements;
+    bool run_tests = false;
+    string test_program = "pytest";
+    string test_args = "-v";
+    string[] test_conda_requirements;
+    string[] test_pip_requirements;
+}
+
+
+Session_t getconf(string filename) {
+    Node root = Loader.fromFile(filename).load();
+    Node data;
+    Session_t session;
+
+    /// Required configuration items
+    try {
+        session.delivery_name = root["delivery_name"].as!string;
+        session.delivery_version = root["delivery_version"].as!string;
+        session.delivery_rev = root["delivery_rev"].as!ubyte;
+        session.delivery_python = root["delivery_python"].as!string;
+
+        if (!session.delivery_python.empty) {
+            session.conda_requirements ~= "python=" ~ session.delivery_python;
+        }
+
+        version (OSX) session.delivery_platform = "osx";
+        version (linux) session.delivery_platform = "linux";
+        version (Windows) session.delivery_platform = "windows";
+
+        session.delivery = format("%s-%s-%s-py%s.%02d",
+                session.delivery_name,
+                session.delivery_version,
+                session.delivery_platform,
+                short_version(session.delivery_python),
+                session.delivery_rev);
+    } catch (YAMLException e) {
+        stderr.writefln("\n%s: configuration error!\n%s\n", filename, e.msg);
+        exit(EXIT_FAILURE);
+    }
+
+    /// Optional configuration items
+    if (root.containsKey("base_spec"))
+        session.base_spec = root["base_spec"].as!string;
+
+    if (root.containsKey("on_error"))
+        session.on_error = root["on_error"].as!string;
+
+    if (root.containsKey("script_pre"))
+        session.script_pre = root["script_pre"].as!string;
+
+    if (root.containsKey("script_post"))
+        session.script_post = root["script_post"].as!string;
+
+    if (root.containsKey("runtime")) {
+        data = root["runtime"];
+        foreach (Node k, Node v; data)
+            session.runtime[k.as!string] = v.as!string;
+    }
+
+    if (root.containsKey("conda_channels")) {
+        data = root["conda_channels"];
+        foreach (Node v; data)
+            session.conda_channels ~= v.as!string;
+    }
+
+    if (root.containsKey("conda_requirements")) {
+        data = root["conda_requirements"];
+        foreach (Node v; data)
+            session.conda_requirements ~= v.as!string;
+    }
+
+    if (root.containsKey("pip_index")) {
+        data = root["pip_index"];
+        foreach (Node v; data)
+            session.pip_index ~= v.as!string;
+    }
+
+    if (root.containsKey("pip_requirements")) {
+        data = root["pip_requirements"];
+        foreach (Node v; data)
+            session.pip_requirements ~= v.as!string;
+    }
+
+    if (root.containsKey("run_tests")) {
+        session.run_tests = root["run_tests"].as!bool;
+    }
+
+    if (root.containsKey("test_program")) {
+        session.test_program = root["test_program"].as!string;
+    }
+
+    if (root.containsKey("test_args")) {
+        session.test_args = root["test_args"].as!string;
+    }
+
+    if (root.containsKey("test_conda_requirements")) {
+        data = root["test_conda_requirements"];
+        foreach (Node v; data)
+            session.test_conda_requirements ~= v.as!string;
+    }
+
+    if (root.containsKey("test_pip_requirements")) {
+        data = root["test_pip_requirements"];
+        foreach (Node v; data)
+            session.test_pip_requirements ~= v.as!string;
+    }
+    return session;
+}