From ba807914e4f6afe9f95aad7aa4e634d47193ba5c Mon Sep 17 00:00:00 2001
From: Vegard Storheil Eriksen <zyp@jvnv.net>
Date: Thu, 7 Jan 2021 00:37:22 +0100
Subject: build: Add Jinja2 builder.

---
 build/env.py                     |  1 +
 build/scons_tools/tool_jinja2.py | 27 +++++++++++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 build/scons_tools/tool_jinja2.py

diff --git a/build/env.py b/build/env.py
index c43bb60..6bc23e8 100644
--- a/build/env.py
+++ b/build/env.py
@@ -8,6 +8,7 @@ env = Environment(
         'default',
         'tool_selectmcu',
         'tool_firmware',
+        'tool_jinja2',
     ],
 )
 
diff --git a/build/scons_tools/tool_jinja2.py b/build/scons_tools/tool_jinja2.py
new file mode 100644
index 0000000..a927285
--- /dev/null
+++ b/build/scons_tools/tool_jinja2.py
@@ -0,0 +1,27 @@
+from SCons.Script import *
+import jinja2
+
+def jinja2_build(target, source, env):
+    template = jinja2.Template(open(str(source[0])).read())
+
+    template_env = env.get('TEMPLATE_ENV', {})
+
+    output = template.render(**template_env) + '\n'
+
+    open(str(target[0]), 'w').write(output)
+
+jinja2_builder = Builder(action = Action(jinja2_build, '$J2COMSTR', varlist = ['TEMPLATE_ENV']))
+
+def Jinja2(env, target, source, **kwargs):
+    return env.Jinja2Build(target, source, TEMPLATE_ENV = kwargs)
+
+
+def exists():
+    return True
+
+def generate(env):
+    env.Append(
+        BUILDERS = {'Jinja2Build': jinja2_builder},
+    )
+
+    env.AddMethod(Jinja2)
\ No newline at end of file
-- 
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