From 639f864f003adf3fa3a8a94cab42d5813f85b476 Mon Sep 17 00:00:00 2001
From: Jan Pokorný <jpokorny@redhat.com>
Date: Tue, 8 Oct 2013 22:38:45 +0200
Subject: Initial commit
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
---
 fix-offsets.py | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100755 fix-offsets.py

(limited to 'fix-offsets.py')

diff --git a/fix-offsets.py b/fix-offsets.py
new file mode 100755
index 0000000..75b08f9
--- /dev/null
+++ b/fix-offsets.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+# vim: set fileencoding=UTF-8:
+# Copyright 2013 Red Hat, Inc.
+# Author: Jan Pokorný <jpokorny at redhat dot com>
+# Licensed under MIT license
+
+import sys
+import re
+import getopt
+from os import environ
+from subprocess import Popen, PIPE
+
+# svn checkout http://python-patch.googlecode.com/svn/trunk/ python-patch
+# pushd python-patch
+# patch <../python-patch-allow-for-externalizing-hunk-again.patch
+# popd
+# ln -s python-patch/patch .
+
+import patch
+
+re_h = re.compile(
+    r'^Hunk \#(\d+) succeeded at (\d+)(?: with fuzz (\d+))? \(offset (-?\d+) lines?\)\.$',
+    re.MULTILINE
+)
+
+
+def adjustment(ret, stderrdata):
+    #print >>sys.stderr, "ret = {0}\nstderrdata = {1}".format(ret, stderrdata)
+    for match in re_h.finditer(stderrdata):
+        #print >>sys.stderr, match.groups()
+        ret = int(match.groups()[3])
+        break
+    else:
+        ret = 0
+    return ret
+
+
+def proceed(opts, args):
+    null = open('/dev/null', 'a')
+    if not args:
+        args.append('-')
+    cmd_args = reduce(lambda a, x: a + list(x), opts, [])
+    #print >>sys.stderr, "cmdargs: {0}, opts: {1}".format(cmd_args, opts)
+    for arg in args:
+        arg = arg if arg != '-' else '/dev/stdin'
+        ps = patch.fromfile(arg)
+        if not ps:
+            print >>sys.stderr, "Bad patch file: {0}".format(arg)
+            continue
+        for p in ps.items:
+            header = '{0}--- {1}\n+++ {2}'.format('\n'.join(p.header),
+                                                    p.source, p.target)
+            print header
+            for hunk in p.hunks:
+                cmd = (lambda *a: a)('/usr/bin/patch', '-o-', *cmd_args)
+                e = dict(LC='C')
+                for name, value in environ.iteritems():
+                    if name in ('TMPDIR', 'TMP', 'TEMP'):
+                        e[name] = value
+                proc = Popen(cmd, stdin=PIPE, stdout=null, stderr=PIPE, env=e)
+                str_hunk = str(hunk)
+                partial_patch = header + '\n' + str_hunk
+                _, stderrdata = proc.communicate(partial_patch)
+                delta = adjustment(proc.wait(), stderrdata)
+                if delta:
+                    hunk.startsrc += delta
+                    hunk.starttgt += delta
+                    str_hunk = str(hunk)
+                print str_hunk,
+    null.close()
+
+
+if __name__ == '__main__':
+    # see PATCH(1)
+    opts, args = getopt.getopt(sys.argv[1:], 'p:f:h', ['strip=', 'fuzz='])
+    if ('-h', '') in opts:
+        print >>sys.stderr, "Usage: {0} {{[-p|-f]}} [patch-or-stdin]" \
+                            .format(sys.argv[0])
+        sys.exit(0)
+    sys.exit(proceed(opts, args))
-- 
cgit