Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/scripts/cmapshare.py @ 38:8934ac156ef5

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Allow to build with the PyPI package "clang" instead of "libclang". 1. It seems to be maintained. 2. In the FreeBSD base system there is no pre-built libclang.so. If you need this library you have to install llvm from ports additionally. 2. On FreeBSD there is no pre-built wheel "libclang" with a packaged libclang.so.
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 23 Sep 2025 10:27:15 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python3
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3 # Find and extract common CMap subsets.
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4 # Taken flattened CMaps as input, using only the 'cidchar' sections.
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5 # The outputs are truncated; so use 'cmapflatten.py' to clean them up.
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7 import sys, os
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9 def load_cmap_set(filename):
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10 cmap = set()
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11 active = False
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12 for line in open(filename).readlines():
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13 line = line.strip()
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14 if line.endswith("endcidchar"): active = False
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15 if active: cmap.add(line)
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16 if line.endswith("begincidchar"): active = True
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17 return cmap
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19 def load_cmap_prologue(filename):
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20 prologue = []
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21 for line in open(filename).readlines():
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22 line = line.strip()
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23 if line.endswith("begincidchar"):
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24 break
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25 prologue.append(line)
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26 return prologue
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28 epilogue = [
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29 'endcidchar',
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30 ]
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32 common_name = os.path.basename(sys.argv[1])
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34 # First find the common subset
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35 common = load_cmap_set(sys.argv[2])
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36 for f in sys.argv[3:]:
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37 common &= load_cmap_set(f)
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39 def print_cmap(filename, prologue, cmap):
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40 out = open(filename, "w")
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41 for line in prologue:
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42 if not line.endswith("usecmap"):
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43 print(line, file=out)
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44 if line == 'begincmap':
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45 print("/"+common_name, "usecmap", file=out)
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46 print(len(cmap), "begincidchar", file=out)
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47 for line in sorted(cmap):
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48 print(line, file=out)
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49 for line in epilogue:
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50 print(line, file=out)
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52 # Print common subset
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53 print_cmap(sys.argv[1], ["/CMapName /%s" % common_name], common)
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54
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55 # Now find unique bits
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56 for f in sys.argv[2:]:
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57 cmap = load_cmap_set(f) - common
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58 prologue = load_cmap_prologue(f)
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59 print_cmap(f+".shared", prologue, cmap)