Add download_size field.

For KerbalStuff, spec, and schema.

Closes #77.

CKAN.schema

@@ -41,6 +41,10 @@
             "type"        : "string",
             "format"      : "uri"
         },
+        "download_size" : {
+            "description" : "The size of the download in bytes",
+            "type" : "integer"
+        },
         "license" : {
             "description" : "Machine readable license, or array of licenses",
             "$ref"      : "#/definitions/licenses"

CKAN/CKAN/Module.cs

@@ -29,6 +29,9 @@ public class Module
         [JsonConverter(typeof(JsonSingleOrArrayConverter<string>))]
         public List<string> author;
 
+        [JsonProperty("download_size")]
+        public long download_size;
+
         [JsonProperty("comment")] public string comment;
         [JsonProperty("conflicts")] public dynamic[] conflicts;
         [JsonProperty("depends")] public dynamic[] depends;

CKAN/KerbalStuff/KSMod.cs

@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using log4net;
 using Newtonsoft.Json.Linq;
 
@@ -26,8 +27,12 @@ public override string ToString()
         ///     Takes a JObject and inflates it with KS metadata.
         ///     This will not overwrite fields that already exist.
         /// </summary>
-        public void InflateMetadata(JObject metadata, KSVersion version)
+        public void InflateMetadata(JObject metadata, KSVersion version, string filename)
         {
+
+            // Check how big our file is
+            long download_size = (new FileInfo (filename)).Length;
+
             // Make sure resources exist.
             if (metadata["resources"] == null)
             {
@@ -47,6 +52,7 @@ public void InflateMetadata(JObject metadata, KSVersion version)
             Inflate(metadata, "version", version.friendly_version.ToString());
             Inflate(metadata, "download", Uri.EscapeUriString(version.download_path));
             Inflate(metadata, "comment", "Generated by ks2ckan");
+            Inflate(metadata, "download_size", download_size);
             Inflate((JObject) metadata["resources"], "homepage", website);
             Inflate((JObject) metadata["resources"]["kerbalstuff"], "url", KSHome());
             Inflate(metadata, "ksp_version", version.KSP_version.ToString());
@@ -70,5 +76,14 @@ internal static void Inflate(JObject metadata, string key, string value)
                 log.DebugFormat("Leaving {0} as {1}", key, metadata[key]);
             }
         }
+
+        internal static void Inflate(JObject metadata, string key, long value)
+        {
+            if (metadata[key] == null)
+            {
+                metadata[key] = value;
+            }
+        }
+
     }
 }

CKAN/KerbalStuff/MainClass.cs

@@ -63,7 +63,7 @@ public static int Main(string[] args)
             if ((string) metadata[expand_token] == ks_expand_path)
             {
                 log.InfoFormat("Inflating...");
-                ks.InflateMetadata(metadata, latest);
+                ks.InflateMetadata(metadata, latest, filename);
                 metadata.Remove(expand_token);
             }
 

Spec.md

@@ -466,6 +466,13 @@ and the old name of the mod is listed in the `provides` field. This
 allows for mods to be renamed without updating all other mods which
 depend upon it.
 
+##### download_size
+
+If supplied, `download_size` is the number of bytes to expect when
+downloading from the `download` URL. It is recommended this this field
+only be generated by automated tools (where it is encouraged),
+and not filled in by hand.
+
 #### Extensions
 
 Any field starting with `x_` (an x, followed by an underscore) is considered