comparison mercurial/encoding.py @ 15143:16c129b0f465

encoding: add getcols to extract substrings based on column width

15142:176882876780

    eaw = getattr(unicodedata, 'east_asian_width', None)
    if eaw is not None:
        return sum([eaw(c) in wide and 2 or 1 for c in d])
    return len(d)

def lower(s):
    "best-effort encoding-aware case-folding of local string s"
    try:
        if isinstance(s, localstr):
            u = s._utf8.decode("utf-8")

15143:16c129b0f465

    eaw = getattr(unicodedata, 'east_asian_width', None)
    if eaw is not None:
        return sum([eaw(c) in wide and 2 or 1 for c in d])
    return len(d)

def getcols(s, start, c):
    '''Use colwidth to find a c-column substring of s starting at byte
    index start'''
    for x in xrange(start + c, len(s)):
        t = s[start:x]
        if colwidth(t) == c:
            return t

def lower(s):
    "best-effort encoding-aware case-folding of local string s"
    try:
        if isinstance(s, localstr):
            u = s._utf8.decode("utf-8")