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Diffstat (limited to 'Master/texmf-dist/scripts/oberdiek/pdftexcmds.lua')
| -rw-r--r-- | Master/texmf-dist/scripts/oberdiek/pdftexcmds.lua | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/Master/texmf-dist/scripts/oberdiek/pdftexcmds.lua b/Master/texmf-dist/scripts/oberdiek/pdftexcmds.lua new file mode 100644 index 00000000000..0c4c1475e8b --- /dev/null +++ b/Master/texmf-dist/scripts/oberdiek/pdftexcmds.lua @@ -0,0 +1,295 @@ +-- +-- This is file `pdftexcmds.lua', +-- generated with the docstrip utility. +-- +-- The original source files were: +-- +-- pdftexcmds.dtx (with options: `lua') +-- +-- This is a generated file. +-- +-- Copyright (C) 2007 by Heiko Oberdiek <oberdiek@uni-freiburg.de> +-- +-- This work may be distributed and/or modified under the +-- conditions of the LaTeX Project Public License, either +-- version 1.3 of this license or (at your option) any later +-- version. The latest version of this license is in +-- http://www.latex-project.org/lppl.txt +-- and version 1.3 or later is part of all distributions of +-- LaTeX version 2005/12/01 or later. +-- +-- This work has the LPPL maintenance status "maintained". +-- +-- This Current Maintainer of this work is Heiko Oberdiek. +-- +-- This work consists of the main source file pdftexcmds.dtx +-- and the derived files +-- pdftexcmds.sty, pdftexcmds.pdf, pdftexcmds.ins, pdftexcmds.drv, +-- oberdiek.pdftexcmds.lua, pdftexcmds.lua. +-- +module("oberdiek.pdftexcmds", package.seeall) +local systemexitstatus +function strcmp(A, B) + if A == B then + tex.write("0") + elseif A < B then + tex.write("-1") + else + tex.write("1") + end +end +local function utf8_to_byte(str) + local i = 0 + local n = string.len(str) + local t = {} + while i < n do + i = i + 1 + local a = string.byte(str, i) + if a < 128 then + table.insert(t, string.char(a)) + else + if a >= 192 and i < n then + i = i + 1 + local b = string.byte(str, i) + if b < 128 or b >= 192 then + i = i - 1 + elseif a == 194 then + table.insert(t, string.char(b)) + elseif a == 195 then + table.insert(t, string.char(b + 64)) + end + end + end + end + return table.concat(t) +end +function escapehex(str, mode) + if mode == "byte" then + str = utf8_to_byte(str) + end + tex.write((string.gsub(str, ".", + function (ch) + return string.format("%02X", string.byte(ch)) + end + ))) +end +function unescapehex(str, mode) + local a = 0 + local first = true + local result = {} + for i = 1, string.len(str), 1 do + local ch = string.byte(str, i) + if ch >= 48 and ch <= 57 then + ch = ch - 48 + elseif ch >= 65 and ch <= 70 then + ch = ch - 55 + elseif ch >= 97 and ch <= 102 then + ch = ch - 87 + else + ch = nil + end + if ch then + if first then + a = ch * 16 + first = false + else + table.insert(result, a + ch) + first = true + end + end + end + if not first then + table.insert(result, a) + end + if mode == "byte" then + local utf8 = {} + for i, a in ipairs(result) do + if a < 128 then + table.insert(utf8, a) + else + if a < 192 then + table.insert(utf8, 194) + a = a - 128 + else + table.insert(utf8, 195) + a = a - 192 + end + table.insert(utf8, a + 128) + end + end + result = utf8 + end + tex.settoks(toks, string.char(unpack(result))) +end +function escapestring(str, mode) + if mode == "byte" then + str = utf8_to_byte(str) + end + tex.write((string.gsub(str, ".", + function (ch) + local b = string.byte(ch) + if b < 33 or b > 126 then + return string.format("\\%.3o", b) + end + if b == 40 or b == 41 or b == 92 then + return "\\" .. ch + end + return nil + end + ))) +end +function escapename(str, mode) + if mode == "byte" then + str = utf8_to_byte(str) + end + tex.write((string.gsub(str, ".", + function (ch) + local b = string.byte(ch) + if b == 0 then + return "" + end + if b <= 32 or b >= 127 + or b == 35 or b == 37 or b == 40 or b == 41 + or b == 47 or b == 60 or b == 62 or b == 91 + or b == 93 or b == 123 or b == 125 then + return string.format("#%.2X", b) + else + return nil + end + end + ))) +end +function filesize(filename) + local foundfile = kpse.find_file(filename, "tex", true) + if foundfile then + local size = lfs.attributes(foundfile, "size") + if size then + tex.write(size) + end + end +end +function filemoddate(filename) + local foundfile = kpse.find_file(filename, "tex", true) + if foundfile then + local date = lfs.attributes(foundfile, "modification") + if date then + local d = os.date("*t", date) + if d.sec >= 60 then + d.sec = 59 + end + local u = os.date("!*t", date) + local off = 60 * (d.hour - u.hour) + d.min - u.min + if d.year ~= u.year then + if d.year > u.year then + off = off + 1440 + else + off = off - 1440 + end + elseif d.yday ~= u.yday then + if d.yday > u.yday then + off = off + 1440 + else + off = off - 1440 + end + end + local timezone + if off == 0 then + timezone = "Z" + else + local hours = math.floor(off / 60) + local mins = math.abs(off - hours * 60) + timezone = string.format("%+03d'%02d'", hours, mins) + end + tex.write(string.format("D:%04d%02d%02d%02d%02d%02d%s", + d.year, d.month, d.day, d.hour, d.min, d.sec, timezone)) + end + end +end +function filedump(offset, length, filename) + length = tonumber(length) + if length and length > 0 then + local foundfile = kpse.find_file(filename, "tex", true) + if foundfile then + offset = tonumber(offset) + if not offset then + offset = 0 + end + local filehandle = io.open(foundfile, "r") + if filehandle then + if offset > 0 then + filehandle:seek("set", offset) + end + local dump = filehandle:read(length) + escapehex(dump) + end + end + end +end +function mdfivesum(str, mode) + if mode == "byte" then + str = utf8_to_byte(str) + end + escapehex(md5.sum(str)) +end +function filemdfivesum(filename) + local foundfile = kpse.find_file(filename, "tex", true) + if foundfile then + local filehandle = io.open(foundfile, "r") + if filehandle then + local contents = filehandle:read("*a") + escapehex(md5.sum(contents)) + end + end +end +function shellescape() + if os.execute then + tex.write("1") + else + tex.write("0") + end +end +function system(cmdline) + systemexitstatus = nil + texio.write_nl("log", "system(" .. cmdline .. ") ") + if os.execute then + texio.write("log", "executed.") + systemexitstatus = os.execute(cmdline) + else + texio.write("log", "disabled.") + end +end +function lastsystemstatus() + local result = tonumber(systemexitstatus) + if result then + local x = math.floor(result / 256) + tex.write(result - 256 * math.floor(result / 256)) + end +end +function lastsystemexit() + local result = tonumber(systemexitstatus) + if result then + tex.write(math.floor(result / 256)) + end +end +function pipe(cmdline) + local result + systemexitstatus = nil + texio.write_nl("log", "pipe(" .. cmdline ..") ") + if io.popen then + texio.write("log", "executed.") + local handle = io.popen(cmdline, "r") + if handle then + result = handle:read("*a") + handle:close() + end + else + texio.write("log", "disabled.") + end + if result then + tex.settoks(toks, result) + else + tex.settoks(toks, "") + end +end +-- +-- End of File `pdftexcmds.lua'. |