Add xmake ci --dump command (#564)

* Add xmake ci --dump command

* Add ci task to the existing plugin category

tools/xmakescripts/plugins/ci/dump/modes.lua

@@ -0,0 +1,11 @@
+import("core.project.project")
+import("core.base.json")
+
+function main()
+    local modes = {}
+    for _, mode in pairs(project.modes()) do
+        table.append(modes, mode)
+    end
+    local jsonString = json.encode(modes)
+    io.write(jsonString)
+end

tools/xmakescripts/plugins/ci/dump/targets.lua

@@ -0,0 +1,20 @@
+import("core.project.config")
+import("core.project.project")
+import("core.base.json")
+import("core.base.task")
+
+function main()
+    project.lock()
+    -- Check to ensure that config has been run. This will not trample the existing config if it exists.
+    task.run("config", {yes=true}, {disable_dump = true})
+    project.load_targets()
+    project.unlock()
+
+    local targets = {}
+    for targetname, target in pairs(project.targets()) do
+        targets[targetname] = {target = target:targetfile(), symbol = target:symbolfile()}
+    end
+
+    local jsonString = json.encode(targets)
+    io.write(jsonString)
+end

tools/xmakescripts/plugins/ci/main.lua

@@ -0,0 +1,10 @@
+import("core.base.option")
+
+function main()
+    if option.get("dump") then
+        local module_name = string.format("dump.%s", string.lower(option.get("dump")))
+        assert(import(module_name, {try = true, anonymous = true}))()
+    else
+        raise("No options provided to the xmake ci command.")
+    end
+end

tools/xmakescripts/plugins/ci/xmake.lua

@@ -0,0 +1,13 @@
+task("ci")
+    set_category("plugin")
+    on_run("main")
+
+    set_menu {
+            usage = "xmake ci [options]",
+            description = "Pass build information to external tools.",
+            options =
+            {
+                {'d', "dump", "kv", nil, "Dump the specified information in JSON format.",
+                    values =  {"modes", "targets"} }
+            }
+        }

xmake.lua

@@ -12,6 +12,9 @@ set_config("buildir", "Intermediates")
 -- /modules/rules/my_module.lua     import("rules.my_module")
 add_moduledirs("tools/xmakescripts/modules")
 
+-- Add the plugins dir to support custom xmake <command>.
+add_plugindirs("tools/xmakescripts/plugins")
+
 -- Load our rule files into the global scope.
 includes("tools/xmakescripts/rules/**.lua")