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#!/usr/bin/python
import sys
if len (sys.argv) != 4:
print >>sys.stderr, "usage: ./gen-indic-table.py IndicSyllabicCategory.txt IndicMatraCategory.txt Blocks.txt"
sys.exit (1)
files = [file (x) for x in sys.argv[1:]]
headers = [[f.readline () for i in range (2)] for f in files]
blocks = {}
data = [{} for f in files]
values = [{} for f in files]
for i, f in enumerate (files):
for line in f:
j = line.find ('#')
if j >= 0:
line = line[:j]
fields = [x.strip () for x in line.split (';')]
if len (fields) == 1:
continue
uu = fields[0].split ('..')
start = int (uu[0], 16)
if len (uu) == 1:
end = start
else:
end = int (uu[1], 16)
t = fields[1]
for u in range (start, end + 1):
data[i][u] = t
values[i][t] = values[i].get (t, 0) + 1
if i == 2:
blocks[t] = (start, end)
# Merge data into one dict:
defaults = ('Other', 'Not_Applicable', 'No_Block')
for i,v in enumerate (defaults):
values[i][v] = values[i].get (v, 0) + 1
combined = {}
for i,d in enumerate (data):
for u,v in d.items ():
if i == 2 and not u in combined:
continue
if not u in combined:
combined[u] = list (defaults)
combined[u][i] = v
data = combined
del combined
num = len (data)
# Move the outliers NO-BREAK SPACE and DOTTED CIRCLE out
singles = {}
for u in [0x00A0, 0x25CC]:
singles[u] = data[u]
del data[u]
print "/* == Start of generated table == */"
print "/*"
print " * The following table is generated by running:"
print " *"
print " * ./gen-indic-table.py IndicSyllabicCategory.txt IndicMatraCategory.txt Blocks.txt"
print " *"
print " * on files with these headers:"
print " *"
for h in headers:
for l in h:
print " * %s" % (l.strip())
print " */"
print
print "#ifndef HB_OT_SHAPE_COMPLEX_INDIC_TABLE_HH"
print "#define HB_OT_SHAPE_COMPLEX_INDIC_TABLE_HH"
print
# Shorten values
short = [{
"Bindu": 'Bi',
"Visarga": 'Vs',
"Vowel": 'Vo',
"Vowel_Dependent": 'M',
"Other": 'x',
},{
"Not_Applicable": 'x',
}]
all_shorts = [[],[]]
# Add some of the values, to make them more readable, and to avoid duplicates
for i in range (2):
for v,s in short[i].items ():
all_shorts[i].append (s)
what = ["INDIC_SYLLABIC_CATEGORY", "INDIC_MATRA_CATEGORY"]
what_short = ["ISC", "IMC"]
for i in range (2):
print
vv = values[i].keys ()
vv.sort ()
for v in vv:
v_no_and = v.replace ('_And_', '_')
if v in short[i]:
s = short[i][v]
else:
s = ''.join ([c for c in v_no_and if ord ('A') <= ord (c) <= ord ('Z')])
if s in all_shorts[i]:
raise Exception ("Duplicate short value alias", v, s)
all_shorts[i].append (s)
short[i][v] = s
print "#define %s_%s %s_%s %s/* %3d chars; %s */" % \
(what_short[i], s, what[i], v.upper (), \
' '* ((48-1 - len (what[i]) - 1 - len (v)) / 8), \
values[i][v], v)
print
print "#define _(S,M) INDIC_COMBINE_CATEGORIES (ISC_##S, IMC_##M)"
print
print
total = 0
used = 0
def print_block (block, start, end, data):
print
print
print " /* %s (%04X..%04X) */" % (block, start, end)
num = 0
for u in range (start, end+1):
if u % 8 == 0:
print
print " /* %04X */" % u,
if u in data:
num += 1
d = data.get (u, defaults)
sys.stdout.write ("%9s" % ("_(%s,%s)," % (short[0][d[0]], short[1][d[1]])))
global total, used
total += end - start + 1
used += num
uu = data.keys ()
uu.sort ()
last = -1
num = 0
offset = 0
starts = []
ends = []
print "static const INDIC_TABLE_ELEMENT_TYPE indic_table[] = {"
for u in uu:
if u <= last:
continue
block = data[u][2]
(start, end) = blocks[block]
if start != last + 1:
if start - last <= 33:
print_block ("FILLER", last+1, start-1, data)
last = start-1
else:
if last >= 0:
ends.append (last + 1)
offset += ends[-1] - starts[-1]
print
print
print "#define indic_offset_0x%04x %d" % (start, offset)
starts.append (start)
print_block (block, start, end, data)
last = end
ends.append (last + 1)
offset += ends[-1] - starts[-1]
print
print
print "#define indic_offset_total %d" % offset
print
occupancy = used * 100. / total
print "}; /* Table occupancy: %d%% */" % occupancy
print
print "static INDIC_TABLE_ELEMENT_TYPE"
print "get_indic_categories (hb_codepoint_t u)"
print "{"
for (start,end) in zip (starts, ends):
offset = "indic_offset_0x%04x" % start
print " if (0x%04X <= u && u <= 0x%04X) return indic_table[u - 0x%04X + %s];" % (start, end, start, offset)
for u,d in singles.items ():
print " if (unlikely (u == 0x%04X)) return _(%s,%s);" % (u, short[0][d[0]], short[1][d[1]])
print " return _(x,x);"
print "}"
print
print "#undef _"
for i in range (2):
print
vv = values[i].keys ()
vv.sort ()
for v in vv:
print "#undef %s_%s" % \
(what_short[i], short[i][v])
print
print "#endif /* HB_OT_SHAPE_COMPLEX_INDIC_TABLE_HH */"
print
print "/* == End of generated table == */"
# Maintain at least 30% occupancy in the table */
if occupancy < 30:
raise Exception ("Table too sparse, please investigate: ", occupancy)
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