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#!/usr/bin/env python3
# Parse a Uni* CMap file and flatten it.
#
# The Uni* CMap files only have 'cidchar' and 'cidrange' sections, never
# 'bfchar' or 'bfrange'.
import sys
def flattencmap(filename):
codespacerange = []
usecmap = ""
cmapname = ""
cmapversion = "1.0"
csi_registry = "(Adobe)"
csi_ordering = "(Unknown)"
csi_supplement = 1
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
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] == '/CMapVersion': cmapversion = line[1]
elif line[0] == '/CMapName': cmapname = line[1][1:]
elif line[0] == '/WMode': wmode = int(line[1])
elif line[0] == '/Registry': csi_registry = line[1]
elif line[0] == '/Ordering': csi_ordering = line[1]
elif line[0] == '/Supplement': csi_supplement = 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] == 'begincidchar': current = 'cidchar'
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)
# Print flattened CMap file
print("%!PS-Adobe-3.0 Resource-CMap")
print("%%DocumentNeededResources: procset (CIDInit)")
print("%%IncludeResource: procset (CIDInit)")
print("%%%%BeginResource: CMap (%s)" % cmapname)
print("%%%%Version: %s" % cmapversion)
print("%%EndComments")
print("/CIDInit /ProcSet findresource begin")
print("12 dict begin")
print("begincmap")
if usecmap: print("/%s usecmap" % usecmap)
print("/CIDSystemInfo 3 dict dup begin")
print(" /Registry %s def" % csi_registry)
print(" /Ordering %s def" % csi_ordering)
print(" /Supplement %s def" % csi_supplement)
print("end def")
print("/CMapName /%s def" % cmapname)
print("/CMapVersion %s def" % cmapversion)
print("/CMapType 1 def")
print("/WMode %d def" % wmode)
if len(codespacerange):
print("%d begincodespacerange" % len(codespacerange))
for r in codespacerange:
fmt = "<%%0%dx> <%%0%dx>" % (r[0]*2, r[0]*2)
print(fmt % (r[1], r[2]))
print("endcodespacerange")
keys = list(map.keys())
keys.sort()
print("%d begincidchar" % len(keys))
for code in keys:
v = map[code]
print("<%04x> %d" % (code, v))
print("endcidchar")
print("endcmap")
print("CMapName currentdict /CMap defineresource pop")
print("end")
print("end")
print("%%EndResource")
print("%%EOF")
for arg in sys.argv[1:]:
flattencmap(arg)
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