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# Parse a CMap file and dump it as a C struct.
import sys
# Decode a subset of CMap syntax (only what is needed for our built-in resources)
# We require that tokens are whitespace separated.
def dumpcmap(filename):
codespacerange = []
usecmap = ""
cmapname = ""
wmode = 0
map = {}
def tocode(s):
if s[0] == '<' and s[-1] == '>':
return int(s[1:-1], 16)
return int(s, 10)
def map_cidchar(lo, v):
map[lo] = v
def map_cidrange(lo, hi, v):
while lo <= hi:
map[lo] = v
lo = lo + 1
v = v + 1
def add_bf(lo, v):
# Decode unicode surrogate pairs
if len(v) == 2 and v[0] >= 0xd800 and v[0] <= 0xdbff and v[1] >= 0xdc00 and v[1] <= 0xdfff:
map[lo] = ((v[0] - 0xd800) << 10) + (v[1] - 0xdc00) + 0x10000
elif len(v) == 1:
map[lo] = v[0]
elif len(v) <= 8:
map[lo] = v[:]
else:
print "/* warning: too long one-to-many mapping: %s */" % (v)
def map_bfchar(lo, bf):
bf = bf[1:-1] # drop < >
v = [int(bf[i:i+4],16) for i in xrange(0, len(bf), 4)]
add_bf(lo, v)
def map_bfrange(lo, hi, bf):
bf = bf[1:-1] # drop < >
v = [int(bf[i:i+4],16) for i in xrange(0, len(bf), 4)]
while lo <= hi:
add_bf(lo, v)
lo = lo + 1
v[-1] = v[-1] + 1
current = None
for line in open(filename, "r").readlines():
if line[0] == '%':
continue
line = line.strip().split()
if len(line) == 0:
continue
if line[0] == '/CMapName':
cmapname = line[1][1:]
elif line[0] == '/WMode':
wmode = int(line[1])
elif len(line) > 1 and line[1] == 'usecmap':
usecmap = line[0][1:]
elif len(line) > 1 and line[1] == 'begincodespacerange': current = 'codespacerange'
elif len(line) > 1 and line[1] == 'begincidrange': current = 'cidrange'
elif len(line) > 1 and line[1] == 'beginbfrange': current = 'bfrange'
elif len(line) > 1 and line[1] == 'begincidchar': current = 'cidchar'
elif len(line) > 1 and line[1] == 'beginbfchar': current = 'bfchar'
elif line[0] == 'begincodespacerange': current = 'codespacerange'
elif line[0] == 'begincidrange': current = 'cidrange'
elif line[0] == 'beginbfrange': current = 'bfrange'
elif line[0] == 'begincidchar': current = 'cidchar'
elif line[0] == 'beginbfchar': current = 'bfchar'
elif line[0].startswith("end"):
current = None
elif current == 'codespacerange' and len(line) == 2:
n, a, b = (len(line[0])-2)/2, tocode(line[0]), tocode(line[1])
codespacerange.append((n, a, b))
elif current == 'cidrange' and len(line) == 3:
a, b, c = tocode(line[0]), tocode(line[1]), tocode(line[2])
map_cidrange(a, b, c)
elif current == 'cidchar' and len(line) == 2:
a, b = tocode(line[0]), tocode(line[1])
map_cidchar(a, b)
elif current == 'bfchar' and len(line) == 2:
a, b = tocode(line[0]), line[1]
map_bfchar(a, b)
elif current == 'bfrange' and len(line) == 3:
a, b, c = tocode(line[0]), tocode(line[1]), line[2]
map_bfrange(a, b, c)
# Create ranges
ranges = []
xranges = []
mranges = []
mdata = []
out_lo = -100
out_hi = -100
out_v_lo = 0
out_v_hi = 0
def flush_range():
if out_lo >= 0:
if out_lo > 0xffff or out_hi > 0xffff or out_v_lo > 0xffff:
xranges.append((out_lo, out_hi, out_v_lo))
else:
ranges.append((out_lo, out_hi, out_v_lo))
keys = map.keys()
keys.sort()
for code in keys:
v = map[code]
if type(v) is not int:
flush_range()
out_lo = out_hi = -100
mranges.append((code, len(mdata)))
mdata.append(len(v))
mdata.extend(v)
else:
if code != out_hi + 1 or v != out_v_hi + 1:
flush_range()
out_lo = out_hi = code
out_v_lo = out_v_hi = v
else:
out_hi = out_hi + 1
out_v_hi = out_v_hi + 1
flush_range()
# Print C file
cname = cmapname.replace('-', '_')
print
print "/*", cmapname, "*/"
print
if len(ranges) > 0:
print "static const pdf_range cmap_%s_ranges[] = {" % cname
for r in ranges:
print "{%d,%d,%d}," % r
print "};"
print
if len(xranges) > 0:
print "static const pdf_xrange cmap_%s_xranges[] = {" % cname
for r in xranges:
print "{%d,%d,%d}," % r
print "};"
print
if len(mranges) > 0:
print "static const pdf_mrange cmap_%s_mranges[] = {" % cname
for r in mranges:
print "{%d,%d}," % r
print "};"
print
print "static const int cmap_%s_table[] = {" % cname
n = mdata[0]
i = 0
for r in mdata:
if i <= n:
sys.stdout.write("%d," % r)
i = i + 1
else:
sys.stdout.write("\n%d," % r)
i = 1
n = r
sys.stdout.write("\n")
print "};"
print
print "static pdf_cmap cmap_%s = {" % cname
print "\t{ -1, pdf_drop_cmap_imp },"
print "\t/* cmapname */ \"%s\"," % cmapname
print "\t/* usecmap */ \"%s\", NULL," % usecmap
print "\t/* wmode */ %d," % wmode
print "\t/* codespaces */ %d, {" % len(codespacerange)
if len(codespacerange) > 0:
for codespace in codespacerange:
fmt = "\t\t{ %%d, 0x%%0%dx, 0x%%0%dx }," % (codespace[0]*2, codespace[0]*2)
print fmt % codespace
else:
print "\t\t{ 0, 0, 0 },"
print "\t},"
if len(ranges) > 0:
print "\t%d, %d, (pdf_range*)cmap_%s_ranges," % (len(ranges),len(ranges),cname)
else:
print "\t0, 0, NULL, /* ranges */"
if len(xranges) > 0:
print "\t%d, %d, (pdf_xrange*)cmap_%s_xranges," % (len(xranges),len(xranges),cname)
else:
print "\t0, 0, NULL, /* xranges */"
if len(mranges) > 0:
print "\t%d, %d, (pdf_mrange*)cmap_%s_mranges," % (len(mranges),len(mranges),cname)
else:
print "\t0, 0, NULL, /* mranges */"
if len(mdata) > 0:
print "\t%d, %d, (int*)cmap_%s_table," % (len(mdata),len(mdata),cname)
else:
print "\t0, 0, NULL, /* table */"
print "\t0, 0, 0, NULL /* splay tree */"
print "};"
print "/* This is an automatically generated file. Do not edit. */"
for arg in sys.argv[1:]:
dumpcmap(arg)
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