tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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ahem-generate-table.py (2893B)

      1 import itertools
      2 import unicodedata
      3 
      4 from fontTools.ttLib import TTFont
      5 
      6 try:
      7    chr(0x100)
      8 except ValueError:
      9    chr = unichr
     10 
     11 def grouper(n, iterable):
     12    """
     13    >>> list(grouper(3, 'ABCDEFG'))
     14    [['A', 'B', 'C'], ['D', 'E', 'F'], ['G']]
     15    """
     16    iterable = iter(iterable)
     17    return iter(lambda: list(itertools.islice(iterable, n)), [])
     18 
     19 ttf = TTFont("../../../fonts/Ahem.ttf")
     20 
     21 chars = {char for table in ttf['cmap'].tables for char in table.cmap.keys()}
     22 
     23 # exclude chars that can't be represented as HTML numeric character refs
     24 chars = chars - (set(range(0x80, 0x9F+1)) | {0x00})
     25 
     26 chars_sorted = sorted(chars)
     27 
     28 per_row = 17
     29 
     30 
     31 doctype = "<!doctype html>"
     32 title = "<title>Ahem checker</title>"
     33 style_open = """
     34 <style>
     35 * {
     36  padding: 0;
     37  margin: 0;
     38  border: none;
     39 }
     40 td {
     41  width: 34px;
     42 }""".strip()
     43 style_close = "</style>"
     44 style_font_face = """
     45 @font-face {
     46  font-family: Ahem;
     47  src: url("../../fonts/Ahem.ttf");
     48 }""".strip()
     49 style_table_font_specified = """
     50 table {
     51  font: 15px/1 Ahem;
     52  border-collapse: separate;
     53  border-spacing: 1px;
     54  table-layout: fixed;
     55 }""".strip()
     56 style_table_font_unspecified = """
     57 table {
     58  font-size: 15px;
     59  line-height: 1;
     60  border-collapse: separate;
     61  border-spacing: 1px;
     62  table-layout: fixed;
     63 }""".strip()
     64 
     65 
     66 def build_header(is_test, rel, href):
     67    rv = [doctype, title]
     68 
     69    if rel != None and href != None:
     70        rv.append('<link rel="%s" href="%s">' % (rel, href))
     71 
     72    rv.append(style_open)
     73 
     74    if not is_test:
     75        if rel == None and href == None:
     76            # ahem-notref.html
     77            rv.append(style_table_font_unspecified)
     78        else:
     79            # ahem-ref.html
     80            rv.append(style_font_face)
     81            rv.append(style_table_font_specified)
     82    else:
     83        # ahem.html
     84        rv.append(style_table_font_specified)
     85 
     86    rv.append(style_close)
     87 
     88    return "\n".join(rv)
     89 
     90 
     91 def build_table():
     92    rv = ["\n"]
     93 
     94    rv.append("<table>\n")
     95    for row in grouper(per_row, chars_sorted):
     96        rv.append(" " * 4 + "<tr>\n")
     97        for codepoint in row:
     98            assert codepoint <= 0xFFFF
     99            try:
    100                name = unicodedata.name(chr(codepoint))
    101            except ValueError:
    102                rv.append(" " * 8 + "<td>&#x%04X;x <!-- U+%04X -->\n" % (codepoint, codepoint))
    103            else:
    104                rv.append(" " * 8 + "<td>&#x%04X;x <!-- U+%04X: %s -->\n" % (codepoint, codepoint, name))
    105    rv.append("</table>\n")
    106 
    107    return "".join(rv)
    108 
    109 
    110 cases = [
    111    # file, is_test, rel
    112    ("../ahem.html", True, "mismatch"),
    113    ("../ahem-notref.html", False, None),
    114 ]
    115 
    116 table = build_table()
    117 
    118 for index, case in enumerate(cases):
    119    next_index = index + 1
    120    file, is_test, rel = case
    121    href = cases[next_index][0][3:] if next_index < len(cases) else None
    122    header = build_header(is_test, rel, href)
    123 
    124    with open(file, "w") as file:
    125        file.write("%s%s" % (header, table))