add jar generate in swig mode

tests/projects/swig/java_c/src/example.c

@@ -2,3 +2,7 @@ int fact(int n) {
     return n;
 }
 
+int fact2(int n) {
+    return n;
+}
+

tests/projects/swig/java_c/src/example.i

@@ -3,3 +3,5 @@
 extern int fact(int n);
 %}
 extern int fact(int n);
+
+%include "example2.i"

tests/projects/swig/java_c/src/example2.i

@@ -0,0 +1,4 @@
+%inline %{
+#include "test.h"
+%}
+%include "test.h"

tests/projects/swig/java_c/src/test.h

@@ -0,0 +1,3 @@
+#pragma once
+
+int fact2(int n);

tests/projects/swig/java_c/xmake.lua

@@ -7,6 +7,8 @@ target("example")
     set_kind('shared')
     -- set moduletype to java
     add_rules("swig.c", {moduletype = "java"})
+    -- test jar build
+    -- add_rules("swig.c", {moduletype = "java" , buildjar = true})
     -- use swigflags to provider package name and output path of java files
     add_files("src/example.i", {swigflags = {
         "-package",
@@ -15,6 +17,7 @@ target("example")
         "build/java/com/example/"
     }})
     add_files("src/example.c")
+    add_includedirs("src")
     before_build(function()
         -- ensure output path exists before running swig
         os.mkdir("build/java/com/example/")

xmake/rules/swig/build_module_file.lua

@@ -20,8 +20,62 @@
 
 -- imports
 import("lib.detect.find_tool")
+import("utils.progress")
+import("core.project.depend")
+import("core.tool.compiler")
 
-function main(target, batchcmds, sourcefile, opt)
+function find_user_outdir(fileconfig)
+    -- user specified output path
+    if fileconfig and fileconfig.swigflags then
+        -- find -outdir path
+        for i, par in ipairs(fileconfig.swigflags) do
+            if par == "-outdir" then
+                local dirpath = fileconfig.swigflags[i + 1]
+                if os.isdir(dirpath) then
+                    return dirpath
+                end
+            end
+        end
+    end
+end
+
+function jar_build(target, fileconfig, opt)
+    local javac = assert(find_tool("javac"), "javac not found!")
+    local jar = assert(find_tool("jar"), "jar not found!")
+
+    local java_src_dir = path.join(target:autogendir(), "rules", "swig")
+    local java_class_dir = java_src_dir
+
+    local user_outdir = find_user_outdir(fileconfig)
+    if user_outdir then
+        java_src_dir = user_outdir
+    end
+
+    -- get java files
+    local autogenfiles = os.files(path.join(java_src_dir, "*.java"))
+
+    -- write file list
+    local filelistname = path.join(java_src_dir, "buildlist.txt")
+    local file = io.open(filelistname, "w")
+    if file then
+        for _, sourcebatch in ipairs(autogenfiles) do
+            file:print(sourcebatch)
+        end
+        file:close()
+    end
+
+    -- compile to class file
+    progress.show(opt.progress, "${color.build.object}compiling.javac %s class file", target:name())
+    os.vrunv(javac.program, {"--release", "17", "-d", java_class_dir, "@" .. filelistname})
+
+    -- generate jar file
+    progress.show(opt.progress, "${color.build.object}compiling.jar %s", target:name() .. ".jar")
+    os.vrunv(jar.program, {"-cf", path.join(java_src_dir, target:name() .. ".jar"), java_class_dir})
+
+    os.tryrm(filelistname)
+end
+
+function swig_par(target, sourcefile, opt)
     -- get swig
     opt = opt or {}
     local swig = assert(find_tool("swig"), "swig not found!")
@@ -34,7 +88,7 @@ function main(target, batchcmds, sourcefile, opt)
 
     -- add commands
     local moduletype = assert(target:data("swig.moduletype"), "swig.moduletype not found!")
-    local argv = { "-" .. moduletype, "-o", sourcefile_cx }
+    local argv = {"-" .. moduletype, "-o", sourcefile_cx}
     if opt.sourcekind == "cxx" then
         table.insert(argv, "-c++")
     end
@@ -63,6 +117,26 @@ function main(target, batchcmds, sourcefile, opt)
     end
 
     table.insert(argv, sourcefile)
+    return {
+        argv = argv,
+        objectfile = objectfile,
+        swig = swig,
+        sourcefile_cx = sourcefile_cx,
+        moduletype = moduletype,
+        fileconfig = fileconfig
+    }
+end
+
+function swig_build_cmd(target, batchcmds, sourcefile, opt, pars)
+    local par = swig_par(target, sourcefile, opt)
+
+    local objectfile = par.objectfile
+    local argv = par.argv
+    local swig = par.swig
+    local sourcefile_cx = par.sourcefile_cx
+    local moduletype = par.moduletype
+    local fileconfig = par.fileconfig
+
     batchcmds:show_progress(opt.progress, "${color.build.object}compiling.swig.%s %s", moduletype, sourcefile)
     batchcmds:mkdir(path.directory(sourcefile_cx))
     batchcmds:vrunv(swig.program, argv)
@@ -73,3 +147,48 @@ function main(target, batchcmds, sourcefile, opt)
     batchcmds:set_depmtime(os.mtime(objectfile))
     batchcmds:set_depcache(target:dependfile(objectfile))
 end
+
+function swig_build_file(target, sourcefile, opt, par)
+    local par = swig_par(target, sourcefile, opt)
+
+    local objectfile = par.objectfile
+    local argv = par.argv
+    local swig = par.swig
+    local sourcefile_cx = par.sourcefile_cx
+    local moduletype = par.moduletype
+    local fileconfig = par.fileconfig
+
+    local dependfile = target:dependfile(objectfile)
+    local dependinfo = target:is_rebuilt() and {} or (depend.load(dependfile) or {})
+    if not depend.is_changed(dependinfo, {lastmtime = os.mtime(objectfile),
+                                          values = argv
+                                          }) then
+        return
+    end
+
+    progress.show(opt.progress, "${color.build.object}compiling.swig.%s %s", moduletype, sourcefile)
+    os.mkdir(path.directory(sourcefile_cx))
+
+    -- gen swig depend file , same with gcc .d
+    local swigdep = os.tmpfile()
+    local argv2 = {"-MMD", "-MF", swigdep}
+    table.join2(argv2, argv)
+
+    -- swig generate file and depend file
+    os.vrunv(swig.program, argv2)
+    compiler.compile(sourcefile_cx, objectfile, {target = target})
+
+    -- update depend file
+    local deps = io.readfile(swigdep, {continuation = "\\"})
+    os.tryrm(swigdep)
+    dependinfo.files = {sourcefile}
+    dependinfo.depfiles_gcc = deps
+    dependinfo.values = argv
+    depend.save(dependinfo, target:dependfile(objectfile))
+
+    -- jar build
+    local buildjar = target:extraconf("rules", "swig.c", "buildjar") or target:extraconf("rules", "swig.cpp", "buildjar")
+    if moduletype == "java" and buildjar then
+        jar_build(target, fileconfig, opt)
+    end
+end

xmake/rules/swig/xmake.lua

@@ -27,6 +27,7 @@
 rule("swig.base")
     on_load(function (target)
         target:set("kind", "shared")
+        local find_user_outdir = import("build_module_file").find_user_outdir
         local moduletype = target:extraconf("rules", "swig.c", "moduletype") or target:extraconf("rules", "swig.cpp", "moduletype")
         if moduletype == "python" then
             target:set("prefixname", "_")
@@ -76,12 +77,23 @@ rule("swig.base")
                     end
                     local autogenfiles
                     local autogendir = path.join(target:autogendir(), "rules", "swig")
+
+                    local user_outdir = find_user_outdir(fileconfig)
+                    if user_outdir then
+                        autogendir = user_outdir
+                    end
+
                     if moduletype == "python" then
                         autogenfiles = os.files(path.join(autogendir, "*.py"))
                     elseif moduletype == "lua" then
                         autogenfiles = os.files(path.join(autogendir, "*.lua"))
                     elseif moduletype == "java" then
-                        autogenfiles = os.files(path.join(autogendir, "*.java"))
+                        local buildjar = target:extraconf("rules", "swig.c", "buildjar") or target:extraconf("rules", "swig.cpp", "buildjar")
+                        if buildjar then
+                            autogenfiles = path.join(autogendir, target:name() .. ".jar")
+                        else
+                            autogenfiles = os.files(path.join(autogendir, "*.java"))
+                        end
                     end
                     if autogenfiles then
                         table.join2(scriptfiles, autogenfiles)
@@ -101,14 +113,20 @@ rule("swig.c")
     set_extensions(".i")
     add_deps("swig.base", "c.build")
     on_buildcmd_file(function (target, batchcmds, sourcefile, opt)
-        import("build_module_file")(target, batchcmds, sourcefile, table.join({sourcekind = "cc"}, opt))
+        import("build_module_file").swig_build_cmd(target, batchcmds, sourcefile, table.join({sourcekind = "cc"}, opt))
+    end)
+    on_build_file(function (target, sourcefile, opt)
+        import("build_module_file").swig_build_file(target, sourcefile, table.join({sourcekind = "cc"}, opt))
     end)
 
 rule("swig.cpp")
     set_extensions(".i")
     add_deps("swig.base", "c++.build")
     on_buildcmd_file(function (target, batchcmds, sourcefile, opt)
-        import("build_module_file")(target, batchcmds, sourcefile, table.join({sourcekind = "cxx"}, opt))
+        import("build_module_file").swig_build_cmd(target, batchcmds, sourcefile, table.join({sourcekind = "cxx"}, opt))
+    end)
+    on_build_file(function (target, sourcefile, opt)
+        import("build_module_file").swig_build_file(target, sourcefile, table.join({sourcekind = "cxx"}, opt))
     end)