Added instance-patch section in Makefile to patch instance interprete…

…r to run scripts (needed when front-page is not anonymously accessible)

Makefile

@@ -134,3 +134,7 @@ vcn:  ## Shows newer packages in checkversion-n.html
 .PHONY: techdoc
 techdoc:  ## Builds technical docs
 	bin/sphinxbuilder
+
+.PHONY: instance-patch
+instance-patch:  ## Patches instance interpreter to run scripts (needed when front-page is not anonymously accessible)
+	bin/python helper.py -f=patch_instance -i=$(instance)

helper.py

@@ -0,0 +1,53 @@
+# -*- coding: utf-8 -*-
+
+import os
+pyu_path = os.path.realpath('parts/omelette/imio/pyutils')
+import sys
+sys.path[0:0] = ['/'.join(pyu_path.split('/')[:-2])]
+
+from imio.pyutils.system import error
+from imio.pyutils.system import read_file
+from imio.pyutils.system import verbose
+
+import argparse
+
+
+def patch_instance(inst='instance-debug'):
+    idp = 'parts/{}/bin/interpreter'.format(inst)
+    if not os.path.exists(idp):
+        error("'{}' doesn't exist: cannot patch it".format(idp))
+        return False
+    lines = read_file(idp)
+    if 'ploneCustom.css' not in ''.join(lines):
+        sp = 0
+        for (i, line) in enumerate(lines):
+            if 'exec(_val)' in line:
+                nl = line.lstrip()
+                sp = len(line) - len(nl)
+                break
+        lines.insert(i, "{}{}".format(' ' * sp,
+                                      '_val = _val.replace("\'); from AccessControl.SpecialUsers import system '
+                                      'as user;", "/ploneCustom.css\'); from AccessControl.SpecialUsers import '
+                                      'system as user;")'))
+        verbose("=> Patching: '{}'".format(idp))
+        fh = open(idp, 'w')
+        fh.write('\n'.join(lines))
+        fh.close()
+    else:
+        verbose("=> Already patched: '{}'".format(idp))
+
+
+functions = {'patch_instance': patch_instance}
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='Call some helper function')
+    parser.add_argument('-f', '--function', dest='fct', help="Function to call",
+                        choices=sorted(functions.keys()))
+    parser.add_argument('-i', '--instance', dest='inst', help="Instance to use")
+    ns = parser.parse_args()
+    if ns.fct:
+        kwargs = {}
+        if ns.inst:
+            kwargs['inst'] = ns.inst
+        functions[ns.fct](**kwargs)