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jbe/bsw@0
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1 #!/usr/bin/env lua
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jbe/bsw@0
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2
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jbe/bsw@0
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3 local _G = _G
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4 local _VERSION = _VERSION
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jbe/bsw@0
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5 local assert = assert
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6 local error = error
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7 local getmetatable = getmetatable
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8 local ipairs = ipairs
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9 local next = next
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10 local pairs = pairs
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jbe/bsw@0
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11 local print = print
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jbe/bsw@0
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12 local rawequal = rawequal
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jbe/bsw@0
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13 local rawget = rawget
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jbe@64
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14 local rawlen = rawlen
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15 local rawset = rawset
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16 local select = select
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17 local setmetatable = setmetatable
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18 local tonumber = tonumber
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19 local tostring = tostring
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20 local type = type
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21
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22 local io = io
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23 local math = math
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24 local os = os
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25 local string = string
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26 local table = table
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27
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jbe@64
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28 local multirand = require("multirand")
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29
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jbe@64
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30 local _M = {}
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jbe@64
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31 if _ENV then
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32 _ENV = _M
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33 else
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34 _G[...] = _M
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jbe@64
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35 setfenv(1, _M)
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36 end
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jbe/bsw@0
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37
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jbe@64
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38 -- NOTE:
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jbe@64
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39 -- temp_dir MUST NOT contain any charactes interpreted by system shell
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jbe@64
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40 -- and has to be set to a private directory (/tmp may be unsafe)
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jbe@64
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41 temp_dir = false
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42
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jbe/bsw@0
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43 function escape(str)
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jbe/bsw@0
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44 return (
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45 string.gsub(
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jbe/bsw@0
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46 str,
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jbe/bsw@0
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47 "[\001-\031\127\\#$&~_^%%{}]",
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jbe/bsw@0
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48 function(char)
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jbe/bsw@0
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49 local b = string.byte(char)
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jbe/bsw@0
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50 if (b > 1 and b < 31) or b == 127 then
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jbe/bsw@0
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51 return " "
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jbe/bsw@0
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52 elseif
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jbe/bsw@0
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53 char == "#" or char == "$" or char == "&" or char == "_" or
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jbe/bsw@0
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54 char == "%" or char == "{" or char == "}"
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jbe/bsw@0
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55 then
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jbe/bsw@0
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56 return "\\" .. char
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jbe/bsw@0
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57 else
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jbe/bsw@0
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58 return "\\symbol{" .. b .. "}"
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jbe/bsw@0
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59 end
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jbe/bsw@0
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60 end
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jbe/bsw@0
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61 )
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jbe/bsw@0
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62 )
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jbe/bsw@0
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63 end
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jbe/bsw@0
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64
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jbe/bsw@0
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65 document_methods = {}
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jbe/bsw@0
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66
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jbe/bsw@0
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67 document_mt = {
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jbe/bsw@0
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68 __index = document_methods,
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jbe/bsw@0
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69 __call = function(...) return document_methods.write(...) end
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jbe/bsw@0
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70 }
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jbe/bsw@0
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71
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jbe/bsw@0
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72 function new_document()
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jbe/bsw@0
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73 return setmetatable({}, document_mt)
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jbe/bsw@0
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74 end
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jbe/bsw@0
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75
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jbe/bsw@0
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76 function document_methods:write(...)
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jbe/bsw@0
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77 local i = 1
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jbe/bsw@0
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78 while true do
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jbe/bsw@0
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79 local v = select(i, ...)
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jbe/bsw@0
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80 if v == nil then
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jbe/bsw@0
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81 break
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jbe/bsw@0
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82 end
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jbe/bsw@0
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83 self[#self+1] = v
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jbe/bsw@0
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84 i = i + 1
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jbe/bsw@0
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85 end
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jbe/bsw@0
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86 end
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jbe/bsw@0
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87
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jbe/bsw@0
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88 function document_methods:get_latex()
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jbe/bsw@0
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89 local str = table.concat(self)
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jbe/bsw@0
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90 for i in ipairs(self) do
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91 self[i] = nil
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jbe/bsw@0
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92 end
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93 self[1] = str
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jbe/bsw@0
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94 return str
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jbe/bsw@0
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95 end
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jbe/bsw@0
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96
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jbe/bsw@0
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97 function document_methods:get_pdf()
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jbe@64
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98 -- TODO: proper escaping of shell commands
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jbe@64
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99 -- (not a security risk, as args are safe)
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100 if not temp_dir then
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101 error("luatex.temp_dir not set")
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102 end
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jbe/bsw@0
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103 local basename = temp_dir .. "/tmp.luatex_" .. multirand.string(16)
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jbe/bsw@0
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104 local latex_file = assert(io.open(basename .. ".tex", "w"))
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jbe/bsw@0
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105 latex_file:write(self:get_latex())
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106 latex_file:close()
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jbe@64
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107 local result1, result2, result3 = os.execute(
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jbe/bsw@0
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108 'latex -output-format=pdf "-output-directory=' .. temp_dir .. '" ' ..
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jbe/bsw@0
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109 basename .. '< /dev/null > /dev/null 2> /dev/null'
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jbe/bsw@0
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110 )
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jbe@64
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111 -- NOTE: use result1 and result3 for lua5.1 and lua5.2 compatibility
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jbe@64
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112 if not (result1 == 0 or (result2 == "exit" and result3 == 0)) then
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jbe/bsw@0
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113 error('LaTeX failed, see "' .. basename .. '.log" for details.')
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114 end
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jbe/bsw@0
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115 local pdf_file = assert(io.open(basename .. ".pdf", "r"))
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jbe/bsw@0
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116 local pdf_data = pdf_file:read("*a")
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117 pdf_file:close()
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jbe/bsw@0
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118 os.execute('rm -f "' .. basename .. '.*"')
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jbe/bsw@0
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119 return pdf_data
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jbe/bsw@0
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120 end
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jbe/bsw@0
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121
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jbe@64
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122 return _M
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jbe@64
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123
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jbe/bsw@0
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124 --[[
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jbe/bsw@0
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125
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jbe@64
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126 luatex = require("luatex")
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jbe/bsw@0
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127 luatex.temp_dir = "."
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jbe/bsw@0
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128
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jbe/bsw@0
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129 local tex = luatex.new_document()
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jbe/bsw@0
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130
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jbe/bsw@0
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131 tex "\\documentclass[a4paper,12pt]{article}\n"
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132 tex "\\usepackage{german}\n"
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133 tex "\\usepackage{amsfonts}\n"
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jbe/bsw@0
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134 tex "\\usepackage{amssymb}\n"
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jbe/bsw@0
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135 tex "\\usepackage{ulem}\n"
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136 tex "\\pagestyle{headings}\n"
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jbe/bsw@0
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137 tex "\\begin{document}\n"
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138 tex "\\title{Demo}\n"
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139 tex "\\author{John Doe}\n"
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jbe/bsw@0
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140 tex "\\date{\\small 25. August 2008}\n"
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jbe/bsw@0
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141 tex "\\maketitle\n"
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jbe/bsw@0
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142 tex "\\end{document}\n"
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jbe/bsw@0
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143
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jbe/bsw@0
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144 local pdf = tex:get_pdf()
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jbe/bsw@0
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145
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146 --]]
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