diff.py 文件源码

def html(self, plain=False):
        old = '\n'.join(sorted(str(countries.name(c)) for c in self.old))
        new = '\n'.join(sorted(str(countries.name(c)) for c in self.new))

        dmp = diff_match_patch()
        a, b, lineArray = dmp.diff_linesToChars(old, new)
        diff = dmp.diff_main(a, b, checklines=False)
        dmp.diff_cleanupSemantic(diff)
        dmp.diff_charsToLines(diff, lineArray)

        result = []
        for op, country in diff:
            if op:
                result.append('<div class="{}">{}</div>'.format(
                    'inserted' if op > 0 else 'deleted', escape(country)))
            else:
                result.append('<div>{}</div>'.format(escape(country)))
        return '\n'.join(result)