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POhelp to convert python ctypes struct to 64bit
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copied!<p>I found this script attached to <a href="http://sourceforge.net/mailarchive/message.php?msg_name=slrnictd6c.s1n.mozbugbox%40mozbugbox.somehost.org" rel="nofollow">a thread in the fontforge-users mailing list</a>. It does <em>exactly</em> what I want. However, it seems only to work on 32bit systems, and I would really like to use it on my 64bit system. </p> <p>I've done a little reading but I can't work out how I should modify this script (presumably the stuct?) to make it work under a 64bit architecture. Can anyone help?</p> <p>Cheers!</p> <pre><code>#!/usr/bin/python # vim:ts=8:sw=4:expandtab:encoding=utf-8 # Export named font from PDF file using fontforge and ctypes import sys from ctypes import * STRING = c_char_p real = c_longdouble # We need the `map` attribute of SplineFont, so declear an incomplete struct. # see: http://sourceforge.net/projects/wqy/files/misc/ # file: fontforge-bindctypes-0.1.tar.bz2 class splinefont(Structure): pass SplineFont = splinefont splinefont._fields_ = [ ('fontname', STRING), ('fullname', STRING), ('familyname', STRING), ('weight', STRING), ('copyright', STRING), ('filename', STRING), ('defbasefilename', STRING), ('version', STRING), ('italicangle', real), ('upos', real), ('uwidth', real), ('ascent', c_int), ('descent', c_int), ('uniqueid', c_int), ('glyphcnt', c_int), ('glyphmax', c_int), ('glyphs', POINTER(c_void_p)), ('changed', c_uint, 1), ('changed_since_autosave', c_uint, 1), ('changed_since_xuidchanged', c_uint, 1), ('display_antialias', c_uint, 1), ('display_bbsized', c_uint, 1), ('dotlesswarn', c_uint, 1), ('onlybitmaps', c_uint, 1), ('serifcheck', c_uint, 1), ('issans', c_uint, 1), ('isserif', c_uint, 1), ('hasvmetrics', c_uint, 1), ('loading_cid_map', c_uint, 1), ('dupnamewarn', c_uint, 1), ('encodingchanged', c_uint, 1), ('multilayer', c_uint, 1), ('strokedfont', c_uint, 1), ('new', c_uint, 1), ('compacted', c_uint, 1), ('backedup', c_uint, 2), ('use_typo_metrics', c_uint, 1), ('weight_width_slope_only', c_uint, 1), ('save_to_dir', c_uint, 1), ('head_optimized_for_cleartype', c_uint, 1), ('ticked', c_uint, 1), ('internal_temp', c_uint, 1), ('complained_about_spiros', c_uint, 1), ('use_xuid', c_uint, 1), ('use_uniqueid', c_uint, 1), ('fv', c_void_p), ('metrics', c_void_p), ('uni_interp', c_int), ('for_new_glyphs', c_void_p), ('map', c_void_p), # ... ] def main(): if len(sys.argv) != 3: print "Usage: %s doc.pdf fontname" % sys.argv[0] sys.exit(2) pdfname = sys.argv[1] fontname = sys.argv[2] fontfile = fontname + '.ttf' # ctypes functions libc = CDLL("libc.so.6") libc.fopen.restype = c_void_p libc.fopen.argtype = [c_char_p, c_char_p] lib_ff = CDLL('libfontforge.so.1') # SplineFont *_SFReadPdfFont(FILE *pdf,char *filename, # char *select_this_font, enum openflags openflags) lib_ff._SFReadPdfFont.argtypes = [c_void_p, c_char_p, c_char_p, c_int] lib_ff._SFReadPdfFont.restype = POINTER(SplineFont) # int GenerateScript(SplineFont *sf, char *filename, char *bitmaptype, # int fmflags, int res, char *subfontdefinition, struct sflist *sfs, # EncMap *map, NameList *rename_to,int layer) lib_ff.GenerateScript.argytpes = [POINTER(SplineFont), c_char_p, c_char_p, c_int, c_int, c_char_p, c_void_p, c_void_p, c_void_p, c_int] lib_ff.GenerateScript.restype = c_int # need to somehow initialize libfontforge or it will segfault somewhere. lib_ff.doinitFontForgeMain() fobj = libc.fopen(pdfname, "rb") if not fobj: print "%s not found" % pdfname sys.exit(1) font = lib_ff._SFReadPdfFont(fobj, pdfname, fontname, 0) ret = 0 if bool(font): ret = lib_ff.GenerateScript(font, fontfile, None, -1, -1, None, None, font.contents.map, None, 1) if ret: print 'Font export to "%s".' % fontfile else: print "** Error ** Failed to export font!!" if __name__ == '__main__': main() </code></pre>

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