projects.mk / jw-projects.py: Support tmpl_dir && tmpls-dir

For a project to supply templates, it needs to advertise their
location. For this, the tmpl_dir make variable is added to
projects.mk. If other-project wants to get hold of some-project's
templates, it can do, e.g.:

  TEMPLATES = $(wilcard $(call tmpl_dir,some-project)/*.tmpl)

To achieve this, support for the tmpls-dir command is added to
jw-projects.py.

Signed-off-by: Jan Lindemann <jan@janware.com>

make/projects.mk

@@ -34,4 +34,5 @@ ifneq ($(TOPDIR),)
   proj_query                 = $(shell $(proj_query_cmd) $(1))
   proj_dir                   = $(call proj_query,proj-dir $(1))
   htdocs_dir                 = $(call proj_query,htdocs-dir $(1))
+  tmpl_dir                   = $(call proj_query,tmpl-dir $(1))
 endif

src/python/jw/pkg/App.py

@@ -115,7 +115,17 @@ class App(object):
         pd = self.proj_dir(name)
         if pd is None:
             return None
-        for r in [ pd + "/tools/html/htdocs", pd + "/htdocs", "/srv/www/proj/" + name ]:
+        for r in [ pd + "/src/html/htdocs", pd + "/tools/html/htdocs", pd + "/htdocs", "/srv/www/proj/" + name ]:
+            if os.path.isdir(r):
+                return r
+        return None
+
+    # TODO: add support for customizing this in project.conf
+    def tmpl_dir(self, name):
+        pd = self.proj_dir(name)
+        if pd is None:
+            return None
+        for r in [ pd + "/tmpl", "/opt/" + name + "/share/tmpl" ]:
             if os.path.isdir(r):
                 return r
         return None

src/python/jw/pkg/build/cmds/CmdTmplDir.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+
+from argparse import Namespace, ArgumentParser
+
+from ..Cmd import Cmd
+
+class CmdTmplDir(Cmd): # export
+
+    def __init__(self) -> None:
+        super().__init__('tmpl-dir', help='Print directory containing templates of a given module')
+
+    def add_arguments(self, parser: ArgumentParser) -> None:
+        super().add_arguments(parser)
+        parser.add_argument('module', nargs='*', help='Modules')
+
+    def _run(self, args: Namespace) -> None:
+        r = []
+        for m in args.module:
+            r.append(self.app.tmpl_dir(m))
+        print(' '.join(r))