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#
# genmap_support.py: Multibyte Codec Map Generator
#
# Original Author: Hye-Shik Chang <perky@FreeBSD.org>
# Modified Author: Donghee Na <donghee.na92@gmail.com>
#
class BufferedFiller:
def __init__(self, column=78):
self.column = column
self.buffered = []
self.cline = []
self.clen = 0
self.count = 0
def write(self, *data):
for s in data:
if len(s) > self.column:
raise ValueError("token is too long")
if len(s) + self.clen > self.column:
self.flush()
self.clen += len(s)
self.cline.append(s)
self.count += 1
def flush(self):
if not self.cline:
return
self.buffered.append(''.join(self.cline))
self.clen = 0
del self.cline[:]
def printout(self, fp):
self.flush()
for l in self.buffered:
fp.write(f'{l}\n')
del self.buffered[:]
def __len__(self):
return self.count
class DecodeMapWriter:
filler_class = BufferedFiller
def __init__(self, fp, prefix, decode_map):
self.fp = fp
self.prefix = prefix
self.decode_map = decode_map
self.filler = self.filler_class()
def update_decode_map(self, c1range, c2range, onlymask=(), wide=0):
c2values = range(c2range[0], c2range[1] + 1)
for c1 in range(c1range[0], c1range[1] + 1):
if c1 not in self.decode_map or (onlymask and c1 not in onlymask):
continue
c2map = self.decode_map[c1]
rc2values = [n for n in c2values if n in c2map]
if not rc2values:
continue
c2map[self.prefix] = True
c2map['min'] = rc2values[0]
c2map['max'] = rc2values[-1]
c2map['midx'] = len(self.filler)
for v in range(rc2values[0], rc2values[-1] + 1):
if v in c2map:
self.filler.write('%d,' % c2map[v])
else:
self.filler.write('U,')
def generate(self, wide=False):
if not wide:
self.fp.write(f"static const ucs2_t __{self.prefix}_decmap[{len(self.filler)}] = {{\n")
else:
self.fp.write(f"static const Py_UCS4 __{self.prefix}_decmap[{len(self.filler)}] = {{\n")
self.filler.printout(self.fp)
self.fp.write("};\n\n")
if not wide:
self.fp.write(f"static const struct dbcs_index {self.prefix}_decmap[256] = {{\n")
else:
self.fp.write(f"static const struct widedbcs_index {self.prefix}_decmap[256] = {{\n")
for i in range(256):
if i in self.decode_map and self.prefix in self.decode_map[i]:
m = self.decode_map
prefix = self.prefix
else:
self.filler.write("{", "0,", "0,", "0", "},")
continue
self.filler.write("{", "__%s_decmap" % prefix, "+", "%d" % m[i]['midx'],
",", "%d," % m[i]['min'], "%d" % m[i]['max'], "},")
self.filler.printout(self.fp)
self.fp.write("};\n\n")
class EncodeMapWriter:
filler_class = BufferedFiller
elemtype = 'DBCHAR'
indextype = 'struct unim_index'
def __init__(self, fp, prefix, encode_map):
self.fp = fp
self.prefix = prefix
self.encode_map = encode_map
self.filler = self.filler_class()
def generate(self):
self.buildmap()
self.printmap()
def buildmap(self):
for c1 in range(0, 256):
if c1 not in self.encode_map:
continue
c2map = self.encode_map[c1]
rc2values = [k for k in c2map.keys()]
rc2values.sort()
if not rc2values:
continue
c2map[self.prefix] = True
c2map['min'] = rc2values[0]
c2map['max'] = rc2values[-1]
c2map['midx'] = len(self.filler)
for v in range(rc2values[0], rc2values[-1] + 1):
if v not in c2map:
self.write_nochar()
elif isinstance(c2map[v], int):
self.write_char(c2map[v])
elif isinstance(c2map[v], tuple):
self.write_multic(c2map[v])
else:
raise ValueError
def write_nochar(self):
self.filler.write('N,')
def write_multic(self, point):
self.filler.write('M,')
def write_char(self, point):
self.filler.write(str(point) + ',')
def printmap(self):
self.fp.write(f"static const {self.elemtype} __{self.prefix}_encmap[{len(self.filler)}] = {{\n")
self.filler.printout(self.fp)
self.fp.write("};\n\n")
self.fp.write(f"static const {self.indextype} {self.prefix}_encmap[256] = {{\n")
for i in range(256):
if i in self.encode_map and self.prefix in self.encode_map[i]:
self.filler.write("{", "__%s_encmap" % self.prefix, "+",
"%d" % self.encode_map[i]['midx'], ",",
"%d," % self.encode_map[i]['min'],
"%d" % self.encode_map[i]['max'], "},")
else:
self.filler.write("{", "0,", "0,", "0", "},")
continue
self.filler.printout(self.fp)
self.fp.write("};\n\n")
def open_mapping_file(path, source):
try:
f = open(path)
except IOError:
raise SystemExit(f'{source} is needed')
return f
def print_autogen(fo, source):
fo.write(f'// AUTO-GENERATED FILE FROM {source}: DO NOT EDIT\n')
def loadmap(fo, natcol=0, unicol=1, sbcs=0):
print("Loading from", fo)
fo.seek(0, 0)
decmap = {}
for line in fo:
line = line.split('#', 1)[0].strip()
if not line or len(line.split()) < 2:
continue
row = [eval(e) for e in line.split()]
loc, uni = row[natcol], row[unicol]
if loc >= 0x100 or sbcs:
decmap.setdefault((loc >> 8), {})
decmap[(loc >> 8)][(loc & 0xff)] = uni
return decmap
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