Bump copyright headers to 2015

- Bump copyright headers to 2015
- [devtools] Rewrite fix-copyright-headers.py
- [devtools] Use git pretty-format for year parsing

Github-Pull: #7205
Rebased-From: fa6ad855e9159b2247da4fa0054f32fa181499ab fa24439ff3d8ab5b9efaf66ef4dae6713b88cb35 fa71669452e57039e4270fd2b33a0e0e1635b813

2 files changed, 35 insertions, 42 deletions

diff --git a/contrib/devtools/README.md b/contrib/devtools/README.md
index a58b8733a6..240ab6d9e0 100644
--- a/contrib/devtools/README.md
+++ b/contrib/devtools/README.md
@@ -11,16 +11,16 @@ fix-copyright-headers.py
 ========================
 
 Every year newly updated files need to have its copyright headers updated to reflect the current year.
-If you run this script from src/ it will automatically update the year on the copyright header for all
-.cpp and .h files if these have a git commit from the current year.
+If you run this script from the root folder it will automatically update the year on the copyright header for all
+source files if these have a git commit from the current year.
 
-For example a file changed in 2014 (with 2014 being the current year):
+For example a file changed in 2015 (with 2015 being the current year):
 
 ```// Copyright (c) 2009-2013 The Bitcoin Core developers```
 
 would be changed to:
 
-```// Copyright (c) 2009-2014 The Bitcoin Core developers```
+```// Copyright (c) 2009-2015 The Bitcoin Core developers```
 
 git-subtree-check.sh
 ====================
diff --git a/contrib/devtools/fix-copyright-headers.py b/contrib/devtools/fix-copyright-headers.py
index 5e84952548..b6414a551f 100755
--- a/contrib/devtools/fix-copyright-headers.py
+++ b/contrib/devtools/fix-copyright-headers.py
@@ -1,53 +1,46 @@
 #!/usr/bin/env python
 '''
-Run this script inside of src/ and it will look for all the files
-that were changed this year that still have the last year in the
-copyright headers, and it will fix the headers on that file using
-a perl regex one liner.
+Run this script to update all the copyright headers of files
+that were changed this year.
 
-For example: if it finds something like this and we're in 2014
+For example:
 
-// Copyright (c) 2009-2013 The Bitcoin Core developers
+// Copyright (c) 2009-2012 The Bitcoin Core developers
 
 it will change it to
 
-// Copyright (c) 2009-2014 The Bitcoin Core developers
-
-It will do this for all the files in the folder and its children.
-
-Author: @gubatron
+// Copyright (c) 2009-2015 The Bitcoin Core developers
 '''
 import os
 import time
+import re
 
 year = time.gmtime()[0]
-last_year = year - 1
-command = "perl -pi -e 's/%s The Bitcoin/%s The Bitcoin/' %s"
-listFilesCommand = "find . | grep %s"
-
-extensions = [".cpp",".h"]
-
-def getLastGitModifiedDate(filePath):
-  gitGetLastCommitDateCommand = "git log " + filePath +" | grep Date | head -n 1"
-  p = os.popen(gitGetLastCommitDateCommand)
-  result = ""
-  for l in p:
-    result = l
-    break
-  result = result.replace("\n","")
-  return result
+CMD_GIT_DATE = 'git log --format=@%%at -1 %s | date +"%%Y" -u -f -'
+CMD_REGEX= "perl -pi -e 's/(20\d\d)(?:-20\d\d)? The Bitcoin/$1-%s The Bitcoin/' %s"
+REGEX_CURRENT= re.compile("%s The Bitcoin" % year)
+CMD_LIST_FILES= "find %s | grep %s"
 
-n=1
-for extension in extensions:
-  foundFiles = os.popen(listFilesCommand % extension)
-  for filePath in foundFiles:
-    filePath = filePath[1:-1]
-    if filePath.endswith(extension):
-      filePath = os.getcwd() + filePath
-      modifiedTime = getLastGitModifiedDate(filePath)
-      if len(modifiedTime) > 0 and str(year) in modifiedTime:
-        print n,"Last Git Modified: ", modifiedTime, " - ", filePath
-        os.popen(command % (last_year,year,filePath))
-        n = n + 1
+FOLDERS = ["./qa", "./src"]
+EXTENSIONS = [".cpp",".h", ".py"]
 
+def get_git_date(file_path):
+  r = os.popen(CMD_GIT_DATE % file_path)
+  for l in r:
+    # Result is one line, so just return
+    return l.replace("\n","")
+  return ""
 
+n=1
+for folder in FOLDERS:
+  for extension in EXTENSIONS:
+    for file_path in os.popen(CMD_LIST_FILES % (folder, extension)):
+      file_path = os.getcwd() + file_path[1:-1]
+      if file_path.endswith(extension):
+        git_date = get_git_date(file_path)
+        if str(year) == git_date:
+          # Only update if current year is not found
+          if REGEX_CURRENT.search(open(file_path, "r").read()) is None:
+            print n,"Last git edit", git_date, "-", file_path
+            os.popen(CMD_REGEX % (year,file_path))
+            n = n + 1