ref: 0de56a9913681c2e76942ca493f70303bb3ef223
dir: /sys/lib/python/mercurial/pure/diffhelpers.py/
# diffhelpers.py - pure Python implementation of diffhelpers.c # # Copyright 2009 Matt Mackall <[email protected]> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2, incorporated herein by reference. def addlines(fp, hunk, lena, lenb, a, b): while True: todoa = lena - len(a) todob = lenb - len(b) num = max(todoa, todob) if num == 0: break for i in xrange(num): s = fp.readline() c = s[0] if s == "\\ No newline at end of file\n": fix_newline(hunk, a, b) continue if c == "\n": # Some patches may be missing the control char # on empty lines. Supply a leading space. s = " \n" hunk.append(s) if c == "+": b.append(s[1:]) elif c == "-": a.append(s) else: b.append(s[1:]) a.append(s) return 0 def fix_newline(hunk, a, b): l = hunk[-1] c = l[0] hline = l[:-1] if c == " " or c == "+": b[-1] = l[1:-1] if c == " " or c == "-": a[-1] = hline hunk[-1] = hline return 0 def testhunk(a, b, bstart): alen = len(a) blen = len(b) if alen > blen - bstart: return -1 for i in xrange(alen): if a[i][1:] != b[i + bstart]: return -1 return 0