Remove the now useless (and fucking slow) wcwidth python implementation

1 files changed, 0 insertions, 340 deletions

diff --git a/src/wcwidth.py b/src/wcwidth.py
deleted file mode 100644
index d44464b4..00000000
--- a/src/wcwidth.py
+++ /dev/null
@@ -1,340 +0,0 @@
-#/usr/bin/env python
-# -*- encoding: utf-8
-"""
- * This is a Python implementation of wcwidth() and wcswidth(), based on the
- * C implementation of the same functions (defined in IEEE Std 1002.1-2001)
- * for Unicode:
- *
- * http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html
- * http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html
- *
- * In fixed-width output devices, Latin characters all occupy a single
- * "cell" position of equal width, whereas ideographic CJK characters
- * occupy two such cells. Interoperability between terminal-line
- * applications and (teletype-style) character terminals using the
- * UTF-8 encoding requires agreement on which character should advance
- * the cursor by how many cell positions. No established formal
- * standards exist at present on which Unicode character shall occupy
- * how many cell positions on character terminals. These routines are
- * a first attempt of defining such behavior based on simple rules
- * applied to data provided by the Unicode Consortium.
- *
- * For some graphical characters, the Unicode standard explicitly
- * defines a character-cell width via the definition of the East Asian
- * FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes.
- * In all these cases, there is no ambiguity about which width a
- * terminal shall use. For characters in the East Asian Ambiguous (A)
- * class, the width choice depends purely on a preference of backward
- * compatibility with either historic CJK or Western practice.
- * Choosing single-width for these characters is easy to justify as
- * the appropriate long-term solution, as the CJK practice of
- * displaying these characters as double-width comes from historic
- * implementation simplicity (8-bit encoded characters were displayed
- * single-width and 16-bit ones double-width, even for Greek,
- * Cyrillic, etc.) and not any typographic considerations.
- *
- * Much less clear is the choice of width for the Not East Asian
- * (Neutral) class. Existing practice does not dictate a width for any
- * of these characters. It would nevertheless make sense
- * typographically to allocate two character cells to characters such
- * as for instance EM SPACE or VOLUME INTEGRAL, which cannot be
- * represented adequately with a single-width glyph. The following
- * routines at present merely assign a single-cell width to all
- * neutral characters, in the interest of simplicity. This is not
- * entirely satisfactory and should be reconsidered before
- * establishing a formal standard in this area. At the moment, the
- * decision which Not East Asian (Neutral) characters should be
- * represented by double-width glyphs cannot yet be answered by
- * applying a simple rule from the Unicode database content. Setting
- * up a proper standard for the behavior of UTF-8 character terminals
- * will require a careful analysis not only of each Unicode character,
- * but also of each presentation form, something the author of these
- * routines has avoided to do so far.
- *
- * http://www.unicode.org/unicode/reports/tr11/
- *
- * Markus Kuhn -- 2007-05-26 (Unicode 5.0)
- * Berteun Damman - 2007-06-28 (Python version)
- *
- * Permission to use, copy, modify, and distribute this software
- * for any purpose and without fee is hereby granted. The author
- * disclaims all warranties with regard to this software.
- *
- * Latest C version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
-"""
-
-# auxiliary function for binary search in interval table, see below
-def bisearch(ucs):
-    mn = 0
-    mx = len(combining_table) - 1
-    if ucs < combining_table[0][0] or ucs > combining_table[mx][1]:
-        return False
-
-    while mx >= mn:
-        mid = (mn + mx) // 2
-        if ucs > combining_table[mid][1]:
-            mn = mid + 1
-        elif ucs < combining_table[mid][0]:
-            mx = mid - 1
-        else:
-            return True
-
-    return False
-
-
-"""
- * The following two functions define the column width of an ISO 10646
- * character as follows:
- *
- *    - The null character (U+0000) has a column width of 0.
- *
- *    - Other C0/C1 control characters and DEL will lead to a return
- *      value of -1.
- *
- *    - Non-spacing and enclosing combining characters (general
- *      category code Mn or Me in the Unicode database) have a
- *      column width of 0.
- *
- *    - SOFT HYPHEN (U+00AD) has a column width of 1.
- *
- *    - Other format characters (general category code Cf in the Unicode
- *      database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
- *
- *    - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
- *      have a column width of 0.
- *
- *    - Spacing characters in the East Asian Wide (W) or East Asian
- *      Full-width (F) category as defined in Unicode Technical
- *      Report #11 have a column width of 2.
- *
- *    - All remaining characters (including all printable
- *      ISO 8859-1 and WGL4 characters, Unicode control characters,
- *      etc.) have a column width of 1.
- *
- * This implementation assumes that wchar_t characters are encoded
- * in ISO 10646.
-"""
-# sorted list of non-overlapping intervals of non-spacing characters
-# generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c"
-combining_table = [
-    ('\u0300', '\u036F'), ('\u0483', '\u0486'), ('\u0488', '\u0489'),
-    ('\u0591', '\u05BD'), ('\u05BF', '\u05BF'), ('\u05C1', '\u05C2'),
-    ('\u05C4', '\u05C5'), ('\u05C7', '\u05C7'), ('\u0600', '\u0603'),
-    ('\u0610', '\u0615'), ('\u064B', '\u065E'), ('\u0670', '\u0670'),
-    ('\u06D6', '\u06E4'), ('\u06E7', '\u06E8'), ('\u06EA', '\u06ED'),
-    ('\u070F', '\u070F'), ('\u0711', '\u0711'), ('\u0730', '\u074A'),
-    ('\u07A6', '\u07B0'), ('\u07EB', '\u07F3'), ('\u0901', '\u0902'),
-    ('\u093C', '\u093C'), ('\u0941', '\u0948'), ('\u094D', '\u094D'),
-    ('\u0951', '\u0954'), ('\u0962', '\u0963'), ('\u0981', '\u0981'),
-    ('\u09BC', '\u09BC'), ('\u09C1', '\u09C4'), ('\u09CD', '\u09CD'),
-    ('\u09E2', '\u09E3'), ('\u0A01', '\u0A02'), ('\u0A3C', '\u0A3C'),
-    ('\u0A41', '\u0A42'), ('\u0A47', '\u0A48'), ('\u0A4B', '\u0A4D'),
-    ('\u0A70', '\u0A71'), ('\u0A81', '\u0A82'), ('\u0ABC', '\u0ABC'),
-    ('\u0AC1', '\u0AC5'), ('\u0AC7', '\u0AC8'), ('\u0ACD', '\u0ACD'),
-    ('\u0AE2', '\u0AE3'), ('\u0B01', '\u0B01'), ('\u0B3C', '\u0B3C'),
-    ('\u0B3F', '\u0B3F'), ('\u0B41', '\u0B43'), ('\u0B4D', '\u0B4D'),
-    ('\u0B56', '\u0B56'), ('\u0B82', '\u0B82'), ('\u0BC0', '\u0BC0'),
-    ('\u0BCD', '\u0BCD'), ('\u0C3E', '\u0C40'), ('\u0C46', '\u0C48'),
-    ('\u0C4A', '\u0C4D'), ('\u0C55', '\u0C56'), ('\u0CBC', '\u0CBC'),
-    ('\u0CBF', '\u0CBF'), ('\u0CC6', '\u0CC6'), ('\u0CCC', '\u0CCD'),
-    ('\u0CE2', '\u0CE3'), ('\u0D41', '\u0D43'), ('\u0D4D', '\u0D4D'),
-    ('\u0DCA', '\u0DCA'), ('\u0DD2', '\u0DD4'), ('\u0DD6', '\u0DD6'),
-    ('\u0E31', '\u0E31'), ('\u0E34', '\u0E3A'), ('\u0E47', '\u0E4E'),
-    ('\u0EB1', '\u0EB1'), ('\u0EB4', '\u0EB9'), ('\u0EBB', '\u0EBC'),
-    ('\u0EC8', '\u0ECD'), ('\u0F18', '\u0F19'), ('\u0F35', '\u0F35'),
-    ('\u0F37', '\u0F37'), ('\u0F39', '\u0F39'), ('\u0F71', '\u0F7E'),
-    ('\u0F80', '\u0F84'), ('\u0F86', '\u0F87'), ('\u0F90', '\u0F97'),
-    ('\u0F99', '\u0FBC'), ('\u0FC6', '\u0FC6'), ('\u102D', '\u1030'),
-    ('\u1032', '\u1032'), ('\u1036', '\u1037'), ('\u1039', '\u1039'),
-    ('\u1058', '\u1059'), ('\u1160', '\u11FF'), ('\u135F', '\u135F'),
-    ('\u1712', '\u1714'), ('\u1732', '\u1734'), ('\u1752', '\u1753'),
-    ('\u1772', '\u1773'), ('\u17B4', '\u17B5'), ('\u17B7', '\u17BD'),
-    ('\u17C6', '\u17C6'), ('\u17C9', '\u17D3'), ('\u17DD', '\u17DD'),
-    ('\u180B', '\u180D'), ('\u18A9', '\u18A9'), ('\u1920', '\u1922'),
-    ('\u1927', '\u1928'), ('\u1932', '\u1932'), ('\u1939', '\u193B'),
-    ('\u1A17', '\u1A18'), ('\u1B00', '\u1B03'), ('\u1B34', '\u1B34'),
-    ('\u1B36', '\u1B3A'), ('\u1B3C', '\u1B3C'), ('\u1B42', '\u1B42'),
-    ('\u1B6B', '\u1B73'), ('\u1DC0', '\u1DCA'), ('\u1DFE', '\u1DFF'),
-    ('\u200B', '\u200F'), ('\u202A', '\u202E'), ('\u2060', '\u2063'),
-    ('\u206A', '\u206F'), ('\u20D0', '\u20EF'), ('\u302A', '\u302F'),
-    ('\u3099', '\u309A'), ('\uA806', '\uA806'), ('\uA80B', '\uA80B'),
-    ('\uA825', '\uA826'), ('\uFB1E', '\uFB1E'), ('\uFE00', '\uFE0F'),
-    ('\uFE20', '\uFE23'), ('\uFEFF', '\uFEFF'), ('\uFFF9', '\uFFFB'),
-]
-
-    # XXX: There are some issues with Plane 1 Unicode characters on 32-bit
-    # systems. As these use UTF-16 internally they will use surrogate pairs
-    # to represent the character. I don't know how this works exactly though,
-    # therefore, until I've figured it out, if we're on a 32-bit system,
-    # we won't include these, otherwise we will.
-if '\U0000FFFF' < '\U00010000':
-    combining_table.extend([
-        ('\U00010A01', '\U00010A03'), ('\U00010A05', '\U00010A06'),
-        ('\U00010A0C', '\U00010A0F'), ('\U00010A38', '\U00010A3A'),
-        ('\U00010A3F', '\U00010A3F'), ('\U0001D167', '\U0001D169'),
-        ('\U0001D173', '\U0001D182'), ('\U0001D185', '\U0001D18B'),
-        ('\U0001D1AA', '\U0001D1AD'), ('\U0001D242', '\U0001D244'),
-        ('\U000E0001', '\U000E0001'), ('\U000E0020', '\U000E007F'),
-        ('\U000E0100', '\U000E01EF'),
-      ])
-
-def wcwidth(ucs):
-  if len(ucs) > 1:
-    raise TypeError('wcwidth() expected a character, '
-        'but string of length %d found' % (len(ucs),))
-  # test for 8-bit control characters
-  if ucs == '\u0000':
-    return 0
-
-  # special case for \x19
-  if ucs == '\x19':
-      # -1 is not an error, that’s the real size that
-      # should be counted, because if a \x19 is found,
-      # the next char should not be counted
-      # So '\x19' and 'a' is -1 + 1 = 0
-      return -1
-
-  # non-printable chars.
-  if ucs < '\u0020' or (ucs >= '\u007f' and ucs < '\u00a0'):
-    return -2
-
-  # binary search in table of non-spacing characters
-  if bisearch(ucs):
-    return 0
-
-  # if we arrive here, ucs is not a combining or C0/C1 control character
-
-  return (1 +
-    (ucs >= '\u1100' and
-     (ucs <= '\u115f' or                    # Hangul Jamo init. consonants
-      ucs == '\u2329' or ucs == '\u232a' or
-      (ucs >= '\u2e80' and ucs <= '\ua4cf' and
-       ucs != '\u303f') or                  # CJK ... Yi
-      (ucs >= '\uac00' and ucs <= '\ud7a3') or # Hangul Syllables
-      (ucs >= '\uf900' and ucs <= '\ufaff') or # CJK Comp. Ideographs
-      (ucs >= '\ufe10' and ucs <= '\ufe19') or # Vertical forms
-      (ucs >= '\ufe30' and ucs <= '\ufe6f') or # CJK Comp. Forms
-      (ucs >= '\uff00' and ucs <= '\uff60') or # Fullwidth Forms
-      (ucs >= '\uffe0' and ucs <= '\uffe6') or
-      # XXX: '\U0000FFFF' < '\U00010000' is only True on 64-bit systems.
-      # On 32 bit systems it fails, but hopefully it won't cause chars to be
-      # misrepresented. It has to do with surrogate pairs, but I don't know
-      # how to fix this.
-      (('\U0000FFFF' < '\U00010000') and
-      (ucs >= '\U00020000' and ucs <= '\U0002fffd') or
-      (ucs >= '\U00030000' and ucs <= '\U0003fffd')))))
-
-
-def wcswidth(s):
-    """
-    Return the length of the passed string, using wcwidth on each char
-    instead of couting 1 for each one.
-    """
-    width = 0
-    for c in s:
-        w = wcwidth(c)
-        if w < -1:
-            # If s contains a non-printable char, we should return -1.
-            # This includes newlines and tabs!
-            return -1
-        else:
-            width += w
-    return width
-
-def wcsislonger(s, l):
-    """
-    Returns the same result than "wcswidth(s) > l" but
-    is faster.
-    """
-    width = 0
-    for c in s:
-        w = wcwidth(c)
-        if w < -1:
-            return True
-        else:
-            width += w
-            if width > l:
-                return True
-    return False
-
-def widthcut(s, m):
-    """
-    Return the first characters of s that can be contained in
-    a m length
-    """
-    i = 0
-    width = 0
-    for c in s:
-        w = wcwidth(c)
-        if w < -1:
-            return None
-        else:
-            width += w
-
-        i += 1
-        if width > m:
-            return s[:i-1]
-    return s
-
-def ljust(s, max, fillchar=" "):
-    """
-    Like widthcut but adding chars at the end of the string until
-    max is reached
-    """
-    if wcwidth(fillchar)!=1:
-        raise TypeError('widthpad() expected fillchar as a character, '
-                        'but string of length %d found' % (len(fillchar),))
-    i = 0
-    width = 0
-    for c in s:
-        w = wcwidth(c)
-        if w < 0:
-            return None
-        else:
-            width += w
-
-        i += 1
-        if width==max:
-            return s[:i]
-        if width > max:
-            return s[:i-1]+fillchar
-
-    return s + fillchar*(max-width)
-
-def rjust(s, max, fillchar=" "):
-    if wcwidth(fillchar)!=1:
-        raise TypeError('widthpad() expected fillchar as a character, '
-                        'but string of length %d found' % (len(fillchar),))
-    i = 0
-    width = 0
-    for c in s:
-        w = wcwidth(c)
-        if w < 0:
-            return None
-        else:
-            width += w
-
-        i += 1
-        if width==max:
-            return s[:i]
-        if width > max:
-            return fillchar+s[:i-1]
-
-    return fillchar*(max-width) + s
-
-if __name__ == '__main__':
-    import unicodedata
-    test_strings = [
-        'Pál Erdős', 'Kurt Gödel', 'Évariste Galois',
-        "Guillaume de l'Hôpital",
-        'ἄνδρα μοι ἔννεπε, μοῦσα, πολύτροπον, ὃς μάλα πολλὰ πλάγχθη',
-    ]
-    for s in test_strings:
-        # d will be the decomposed version, this one should have the
-        # same display width, but it should have more characters.
-        d = unicodedata.normalize('NFD', s)
-        assert wcswidth(s) == wcswidth(d)
-        assert len(s) != len(d)
-    assert wcswidth('string with \n char') == -1
-    assert wcswidth('string with \t char') == -1
-    print('Minor testcase succeeded')