February 2007 - dev-luatex - NTG Mailing Lists

Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 12 Feb '07

12 Feb '07

U luatex/src/texk/web2c/luatexdir/font/ttflua.c U luatex/src/texk/web2c/luatexdir/font/ttfotf.c U luatex/src/texk/web2c/luatexdir/font/splinefont.h Checked out revision 291.

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 11 Feb '07

11 Feb '07

U luatex/src/texk/web2c/luatexdir/font/ttf.h Checked out revision 289.

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 11 Feb '07

11 Feb '07

U luatex/src/texk/web2c/luatexdir/Makefile.in U luatex/src/texk/web2c/luatexdir/lua/lfontlib.c A luatex/src/texk/web2c/luatexdir/font/ttfspecial.c A luatex/src/texk/web2c/luatexdir/font/ttflua.c A luatex/src/texk/web2c/luatexdir/font/ustring.h A luatex/src/texk/web2c/luatexdir/font/cjk.c A luatex/src/texk/web2c/luatexdir/font/basics.h A luatex/src/texk/web2c/luatexdir/font/sd.h A luatex/src/texk/web2c/luatexdir/font/chardata.h A luatex/src/texk/web2c/luatexdir/font/charset.h A luatex/src/texk/web2c/luatexdir/font/ttf.h A luatex/src/texk/web2c/luatexdir/font/gwwiconv.c A luatex/src/texk/web2c/luatexdir/font/ttfencoding.c A luatex/src/texk/web2c/luatexdir/font/ttfotf.c A luatex/src/texk/web2c/luatexdir/font/ttfatt.c A luatex/src/texk/web2c/luatexdir/font/gwwiconv.h A luatex/src/texk/web2c/luatexdir/font/namelist.c A luatex/src/texk/web2c/luatexdir/font/psfont.h A luatex/src/texk/web2c/luatexdir/font/psread.c A luatex/src/texk/web2c/luatexdir/font/alphabet.c A luatex/src/texk/web2c/luatexdir/font/pua.c A luatex/src/texk/web2c/luatexdir/font/fvfonts.c A luatex/src/texk/web2c/luatexdir/font/splinefont.h Checked out revision 288.

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 05 Feb '07

05 Feb '07

U luatex/src/texk/web2c/luatexdir/luatex.ch U luatex/src/texk/web2c/luatexdir/luatex.web U luatex/src/texk/web2c/luatexdir/lua/luainit.c U luatex/src/texk/web2c/luatexdir/font/writefont.c U luatex/manual/luatexref-t.tex Checked out revision 287.

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 04 Feb '07

04 Feb '07

U luatex/src/texk/web2c/luatexdir/luatex.web U luatex/src/texk/web2c/luatexdir/font/luafont.c U luatex/manual/luatexref-t.tex U luatex/manual/luatexref-t.pdf Checked out revision 284.

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 04 Feb '07

04 Feb '07

U luatex/src/texk/web2c/luatexdir/utils.c U luatex/src/texk/web2c/luatexdir/ptexmac.h U luatex/src/texk/web2c/luatexdir/ptexlib.h U luatex/src/texk/web2c/luatexdir/font/vfpacket.c U luatex/src/texk/web2c/luatexdir/font/luafont.c U luatex/src/texk/web2c/luatexdir/font/vfovf.c U luatex/src/texk/web2c/luatexdir/font/texfont.h Checked out revision 280.

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 04 Feb '07

04 Feb '07

U luatex/src/texk/web2c/luatexdir/font/luafont.c U luatex/src/texk/web2c/luatexdir/font/texfont.h Checked out revision 274.

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 03 Feb '07

03 Feb '07

U luatex/src/texk/web2c/luatexdir/utils.c U luatex/src/texk/web2c/luatexdir/image/epdf.c U luatex/src/texk/web2c/luatexdir/font/writet1.c U luatex/src/texk/web2c/luatexdir/font/luafont.c U luatex/src/texk/web2c/luatexdir/font/writettf.c U luatex/src/texk/web2c/luatexdir/font/writefont.c Checked out revision 272.

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Snapshot 20070202
by Taco Hoekwater 03 Feb '07

03 Feb '07

Hi all, This week was at least one workday too short, but I really wanted to get some code out, so I decided to do a snapshot anyway. I've spent quite a bit of the past week chasing pdftex bugs, and while that is very useful, it is also very time-consuming, so the current snapshot is (even more than normal) rough around the edges. * The pdftex stuff is now updated to 1.40.2, and on top of that, it has - an extra patch from Han The Thanh that adds a primitive to control the merging of fonts from external pdf images (\pdfreplacefonts), and a bugfix for virtual font handling. - an extra patch by Hartmut Henkel that removes a number of malloc()s and free()s from the calls to the compression library, thereby making luatex run a bit faster. * luatex now happily accepts the following low-level syntax: \font\myfont = <general text> <at specifier> It feeds the <general text> to either kpathsea or a lua script for further processing after stripping the braces. In itself, this is not all that useful, but the reason for this syntax extension is that it paves the road for a macro package to do something like this: \font\myfont = {font="Times New Roman", color="\darkred", encoding="ec", features="liga", size=10bp} without having to resort to system-specific quoting mechanisms. Macro (and other) expansion takes inside the braced argument. (I am considering adding this extension to \input as well). * It is now possible to define a font into the font.fonts[] directly from lua, but becayse use is limited, I am only mentioning it to be complete. Syntax: <number> id = font.define(<table> font) * There is a (not very reliable yet) virtual font parser accessible from lua. Syntax: <table> vfdata = font.read_vf(<string> name, <number> size) The interpreter tries to give a reasonable representation of a virtual font file (the .vf file). Besides a few simple top-level items: designsize -- in scaled points size -- also in sp name -- the file name checksum -- the vf checksum header -- the header comment (if any) it also has a top-level array 'fonts' wherein each item is a mini- array describing one of te mapped fonts. An example makes this easy to understand "fonts" = { {"ptmr8a",655360}, {"psyr", 600000} } says that the first referenced font (index 1) in this virtual font is ptrmr8a.tfm loaded at 10pt, and the second is psyr.tfm loaded at a little over 9pt. These index numbers are used by the character command definitions that follow. At top level, there is a 'characters' array, just as for a normal font, except that each item has only two keys: "width" -- the tfm width (as stored in the .vf) "commands" -- an array of virtual font commands for a character. each of the items in the 'commands' array is itself a tiny hash. Each of those mini-hashes represents a single character packet command. Here is a 'commands' entry that contains every possible one at least once: "commands" = { {"push"}, -- remember where we are {"right", 5000}, -- move right 0.08pt {"font", 1}, -- select the fonts[1] entry {"setchar", 97}, -- place character 97 'a' {"pop"}, -- go all the way back {"down", -200000}, -- move *up* about 3pt {"special", "pdf: 1 0 0 rg"} -- switch to red color {"rule", 500000, 20000} -- draw a bar {'special',"pdf: 0 g"} -- back to black } * But the big news is that you can now define your own virtual fonts on the fly, by adding a few statements to the table returned to the 'define_font' callback. There are a few requirements: - The table has to have a top-level key 'type', and it's value must be 'virtual'. The presence of this key with the specific value 'virtual' will trigger handling of the rest of the special virtual font fields in the table, but the mere existance of 'type' is enough to prevent luatex from looking for a virtual font on its own. Therefore, this also works 'in reverse': if you are absolutely certain that a font is not a virtual font, assigning the value 'base' or 'real' to 'type' will inhibit tex from looking for a virtual font file, thereby saving you a disk search. - There must be a top-level 'fonts' array, as explained above. Any fonts that are not yet known to luatex at that moment, will be loaded automatically (Warning: do not ever use a font in 'fonts' with the same name you will return in the table you are defining right now!). - Each and every character in the fonts needs to have a 'commands' key, as explained above. The main point behind these restrictions is that a font is *either* a base font *or* a virtual font. It cannot be both at the same time. Because it is not that easy to grasp these things immediately --and from the reference documentation at that-- here is a nice little example that is suitable for luatex --ini (adapted from Hans Hagen): % start of virtual-demo.tex \input plain \pdfoutput=1 \directlua0 { callback.register("define_font", function (name,area,size) if name == 'cmr10-red' then f = font.read_tfm('cmr10',size) f.name = 'cmr10-red' f.type = 'virtual' f.fonts = {{'cmr10', size}} for i,v in pairs(f.characters) do if (string.char(i)):find("[tacohanshartmut]") then v.commands = { {'special','pdf: 1 0 0 rg'}, {'char',i}, {'special','pdf: 0 g'}, } else v.commands = { {'font',1}, {'char',i}, } end end else f = font.tfm_read(name,size) end return f end ) } \font\myfont = cmr10-red \myfont This is a line of text \par \font\myfontx= cmr10 \myfontx Here is another line of text \par \bye % end of virtual-demo.tex That's it for now. Be careful. Like I said in the beginning of this message already, there are still quite a few rough edges, and segfaults are (unfortunately) rather likely still. Happy TeXing, Taco ----- Downloading and installation details: If you go to https://foundry.supelec.fr/frs/?group_id=10 you will see that there are three new released files: * luatex-snapshot-20070202.tar.bz2 This is the source tree. * luatex-snapshot-20070202-win32.zip A cross-compiled (mingw) windows binary. This is a web2c based binary, so it needs a texmf.cnf file (It will NOT work if you have only miktex installed). * luatex-snapshot-20070202-linux-i386.tar.bz2 An intel 32 linux binary (linux 2.6.20-rc6, libc 2.3.5)

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 03 Feb '07

03 Feb '07

U luatex/manual/luatexref-t.tex U luatex/manual/luatexref-t.pdf Checked out revision 269.

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