63 lines
2.3 KiB
OCaml
63 lines
2.3 KiB
OCaml
open Netcgi;;
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open Netcgi_types;;
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open Netcgi_env;;
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open Netchannels;;
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let cgi = new Netcgi.std_activation ()
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let out = cgi # output # output_string
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let math = cgi # argument_value ~default:"" "math"
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let tmppath = "/home/taw/public_html/wiki/tmp/"
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let finalpath = "/home/taw/public_html/wiki/math/"
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let finalurl = "http://wroclaw.taw.pl.eu.org/~taw/wiki/math/"
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;;
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let h_header = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\""^
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" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n"^
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"<html><head><title>texvc</title></head><body>"^
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"<form method=post action=\"http://wroclaw.taw.pl.eu.org/~taw/cgi-bin/newcodebase/math/texvc_cgi\">"^
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"<textarea name='math' rows=10 cols=80>"
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let h_middle = "</textarea><br /><input type=submit value=\"Preview\" name='preview'></form>"
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let h_footer = "</body></html>\n"
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let render tmppath finalpath tree =
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let outtex = Texutil.mapjoin Texutil.print tree in
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let md5 = Digest.to_hex (Digest.string outtex) in
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begin
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out "<h3>TeX</h3>";
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out outtex; (* <, & and > should be protected *)
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(try out ("<h3>HTML</h3>" ^ (Texutil.html_render tree))
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with _ -> out "<h3>HTML could not be rendered</h3>");
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try Render.render tmppath finalpath outtex md5;
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out ("<h3>Image:</h3><img src=\""^finalurl^md5^".png\">")
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with Util.FileAlreadyExists -> out ("<h3>Image:</h3><img src=\""^finalurl^md5^".png\">")
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| Failure s -> out ("<h3>Other failure: " ^ s ^ "</h3>")
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| Render.ExternalCommandFailure "latex" -> out "<h3>latex failed</h3>"
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| Render.ExternalCommandFailure "dvips" -> out "<h3>dvips failed</h3>"
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| _ -> out "<h3>Other failure</h3>"
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end
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;;
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cgi#set_header ();;
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out h_header;;
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out math;;
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out h_middle;;
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exception LexerException of string
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let lexer_token_safe lexbuf =
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try Lexer.token lexbuf
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with Failure s -> raise (LexerException s)
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;;
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if math = ""
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then ()
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else try
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render tmppath finalpath (Parser.tex_expr lexer_token_safe (Lexing.from_string math))
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with Parsing.Parse_error -> out "<h3>Parse error</h3>"
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| LexerException s -> out "<h3>Lexing failure</h3>"
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| Texutil.Illegal_tex_function s -> out ("<h3>Illegal TeX function: " ^ s ^ "</h3>")
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| Failure s -> out ("<h3>Other failure: " ^ s ^ "</h3>")
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| _ -> out "<h3>Other failure</h3>"
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;;
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out h_footer
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