recalculate SHA on template files when installed tracker used as template

[SF#827510]

Author: Richard Jones

CHANGES.txt

@@ -27,6 +27,8 @@ Fixed:
   (bug #821364).
 - Centralised conversion of user-input data to hyperdb values (bug #802405,
   bug #817217, rfe #816994)
+- recalculate SHA on template files when installed tracker used as
+  template (sf bug 827510)
 
 Cleanup:
 - Replace curuserid attribute on Database with the extended getuid() method.

roundup/install_util.py

@@ -15,7 +15,7 @@
 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 # 
-# $Id: install_util.py,v 1.8 2002-09-10 00:18:20 richard Exp $
+# $Id: install_util.py,v 1.9 2003-11-11 22:37:25 richard Exp $
 
 __doc__ = """
 Support module to generate and check fingerprints of installed files.
@@ -30,29 +30,32 @@
 
 digested_file_types = sgml_file_types + hash_file_types + slast_file_types
 
-
-def checkDigest(filename):
-    """Read file, check for valid fingerprint, return TRUE if ok"""
-    # open and read file
-    inp = open(filename, "r")
-    lines = inp.readlines()
-    inp.close()
-
+def extractFingerprint(lines):
     # get fingerprint from last line
-    if lines[-1][:6] == "#SHA: ":
+    if lines[-1].startswith("#SHA: "):
         # handle .py/.sh comment
-        fingerprint = lines[-1][6:].strip()
-    elif lines[-1][:10] == "<!-- SHA: ":
+        return lines[-1][6:].strip()
+    elif lines[-1].startswith("<!-- SHA: "):
         # handle xml/html files
         fingerprint = lines[-1][10:]
         fingerprint = fingerprint.replace('-->', '')
-        fingerprint = fingerprint.strip()
-    elif lines[-1][:8] == "/* SHA: ":
+        return fingerprint.strip()
+    elif lines[-1].startswith("/* SHA: "):
         # handle css files
         fingerprint = lines[-1][8:]
         fingerprint = fingerprint.replace('*/', '')
-        fingerprint = fingerprint.strip()
-    else:
+        return fingerprint.strip()
+    return None
+
+def checkDigest(filename):
+    """Read file, check for valid fingerprint, return TRUE if ok"""
+    # open and read file
+    inp = open(filename, "r")
+    lines = inp.readlines()
+    inp.close()
+
+    fingerprint = extractFingerprint(lines)
+    if fingerprint is None:
         return 0
     del lines[-1]
 
@@ -76,6 +79,12 @@ def __init__(self, filename):
         self.file = open(self.filename, "w")
 
     def write(self, data):
+        lines = data.splitlines()
+        # if the file is coming from an installed tracker being used as a
+        # template, then we will want to re-calculate the SHA
+        fingerprint = extractFingerprint(lines)
+        if fingerprint is not None:
+            data = '\n'.join(lines[:-1]) + '\n'
         self.file.write(data)
         self.digest.update(data)