1 files changed, 159 insertions, 0 deletions
diff --git a/xmake/plugins/show/info/depgraph.lua b/xmake/plugins/show/info/depgraph.lua
new file mode 100644
index 000000000..2c73f3abc
--- /dev/null
+++ b/xmake/plugins/show/info/depgraph.lua
@@ -0,0 +1,159 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+-- Copyright (C) 2015-present, Xmake Open Source Community.
+--
+-- @author      ruki
+-- @file        depgraph.lua
+--
+
+-- imports
+import("core.base.option")
+import("core.base.json")
+import("core.project.config")
+import("core.project.project")
+import("private.detect.check_targetname")
+
+function _collect_target_entry(target)
+    local deps = {}
+    for _, depname in ipairs(table.wrap(target:get("deps"))) do
+        local dep = target:dep(depname)
+        if dep then
+            table.insert(deps, dep:fullname())
+        end
+    end
+    json.mark_as_array(deps)
+    return {
+        name = target:fullname(),
+        deps = deps
+    }
+end
+
+function _collect_target_graph(root_target)
+    local targets = {}
+    local selected = {}
+    if root_target then
+        selected[root_target:fullname()] = true
+        for _, dep in ipairs(root_target:orderdeps() or {}) do
+            selected[dep:fullname()] = true
+        end
+    end
+
+    for _, target in ipairs(project.ordertargets()) do
+        if not root_target or selected[target:fullname()] then
+            table.insert(targets, _collect_target_entry(target))
+        end
+    end
+
+    local roots = {}
+    if root_target then
+        table.insert(roots, root_target:fullname())
+    else
+        local indegrees = {}
+        for _, target in ipairs(targets) do
+            indegrees[target.name] = 0
+        end
+        for _, target in ipairs(targets) do
+            for _, depname in ipairs(target.deps) do
+                if indegrees[depname] ~= nil then
+                    indegrees[depname] = indegrees[depname] + 1
+                end
+            end
+        end
+        for _, target in ipairs(targets) do
+            if indegrees[target.name] == 0 then
+                table.insert(roots, target.name)
+            end
+        end
+    end
+
+    json.mark_as_array(roots)
+    return {
+        root_targets = roots,
+        targets = targets
+    }
+end
+
+function _print_dep_tree(targets_map, name, prefix, expanded)
+    expanded[name] = true
+    local entry = targets_map[name]
+    local deps = entry and entry.deps or {}
+    for i, dep in ipairs(deps) do
+        local is_last = (i == #deps)
+        local connector = is_last and "\\-- " or "|-- "
+        local next_prefix = prefix .. (is_last and "    " or "|   ")
+        local dep_entry = targets_map[dep]
+        local dep_deps = dep_entry and dep_entry.deps or {}
+        if expanded[dep] and #dep_deps > 0 then
+            cprint("%s%s${color.dump.reference}%s${clear} ${dim}(*)${clear}", prefix, connector, dep)
+        else
+            cprint("%s%s${color.dump.reference}%s${clear}", prefix, connector, dep)
+            _print_dep_tree(targets_map, dep, next_prefix, expanded)
+        end
+    end
+end
+
+function _print_target_graph(graph)
+    local targets_map = {}
+    for _, target in ipairs(graph.targets) do
+        targets_map[target.name] = target
+    end
+    local expanded = {}
+    for _, root in ipairs(graph.root_targets) do
+        cprint("${color.dump.string}%s${clear}", root)
+        _print_dep_tree(targets_map, root, "", expanded)
+    end
+end
+
+function _print_dot_graph(graph)
+    print("digraph {")
+    for _, target in ipairs(graph.targets) do
+        if #target.deps == 0 then
+            print(string.format("    \"%s\"", target.name))
+        else
+            for _, dep in ipairs(target.deps) do
+                print(string.format("    \"%s\" -> \"%s\"", target.name, dep))
+            end
+        end
+    end
+    print("}")
+end
+
+function main(name)
+    config.load()
+
+    local root_target
+    if name then
+        root_target = assert(check_targetname(name))
+    end
+
+    local graph = _collect_target_graph(root_target)
+
+    -- support --format=json/dot/plain, with --json/--pretty backward compatibility
+    local format = option.get("format") or "plain"
+    if format == "plain" and option.get("json") then
+        format = "json"
+    end
+    if format == "json" then
+        local json_opt = {pretty = true, orderkeys = true}
+        if option.get("json") and not option.get("pretty") then
+            json_opt = nil
+        end
+        print(json.encode(graph, json_opt))
+    elseif format == "dot" then
+        _print_dot_graph(graph)
+    else
+        _print_target_graph(graph)
+    end
+end