--- a/mercurial/pure/bdiff.py Thu Jul 28 14:17:08 2016 +0200
+++ b/mercurial/pure/bdiff.py Sat Aug 20 23:06:01 2016 +0200
@@ -113,12 +113,12 @@
b = ffi.new("struct bdiff_line**")
ac = ffi.new("char[]", sa)
bc = ffi.new("char[]", sb)
+ l = ffi.new("struct bdiff_hunk*")
try:
an = lib.bdiff_splitlines(ac, len(sa), a)
bn = lib.bdiff_splitlines(bc, len(sb), b)
if not a[0] or not b[0]:
raise MemoryError
- l = ffi.new("struct bdiff_hunk*")
count = lib.bdiff_diff(a[0], an, b[0], bn, l)
if count < 0:
raise MemoryError
@@ -134,3 +134,36 @@
lib.free(b[0])
lib.bdiff_freehunks(l.next)
return rl
+
+ def bdiff(sa, sb):
+ a = ffi.new("struct bdiff_line**")
+ b = ffi.new("struct bdiff_line**")
+ ac = ffi.new("char[]", sa)
+ bc = ffi.new("char[]", sb)
+ l = ffi.new("struct bdiff_hunk*")
+ try:
+ an = lib.bdiff_splitlines(ac, len(sa), a)
+ bn = lib.bdiff_splitlines(bc, len(sb), b)
+ if not a[0] or not b[0]:
+ raise MemoryError
+ count = lib.bdiff_diff(a[0], an, b[0], bn, l)
+ if count < 0:
+ raise MemoryError
+ rl = []
+ h = l.next
+ la = lb = 0
+ while h:
+ if h.a1 != la or h.b1 != lb:
+ lgt = (b[0] + h.b1).l - (b[0] + lb).l
+ rl.append(struct.pack(">lll", (a[0] + la).l - a[0].l,
+ (a[0] + h.a1).l - a[0].l, lgt))
+ rl.append(str(ffi.buffer((b[0] + lb).l, lgt)))
+ la = h.a2
+ lb = h.b2
+ h = h.next
+
+ finally:
+ lib.free(a[0])
+ lib.free(b[0])
+ lib.bdiff_freehunks(l.next)
+ return "".join(rl)