src/htmlPrint.sml

   1 (* HCoop Domtool (http://hcoop.sourceforge.net/)
   2  * Copyright (c) 2006, Adam Chlipala
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  *)
  18
  19 (* Pretty-printing Domtool configuration file ASTs for HTML *)
  20
  21 signature HTML_PRINT_ARG = sig
  22     include PRINTFN_INPUT where type rendering = HTML.text
  23
  24     val setProviders : Order.providers -> unit
  25 end
  26
  27 structure HtmlPrintArg :> HTML_PRINT_ARG = struct
  28
  29 open Ast Order
  30
  31 structure TextToken = struct
  32 type token = string
  33 type style = HTMLDev.style
  34 fun string t = t
  35 fun style t = HTMLDev.styleTT
  36 fun size t = String.size t
  37 end
  38
  39 structure SM = PPStreamFn(structure Token = TextToken
  40                           structure Device = HTMLDev)
  41
  42 structure PD = PPDescFn(SM)
  43 open PD
  44
  45 fun keyword s = style (HTMLDev.styleB, [string s])
  46 val punct = string
  47 val field = string
  48 val lit = string
  49 val ident = string
  50
  51 val prov : providers option ref = ref NONE
  52 fun setProviders p = prov := SOME p
  53
  54 fun modify file =
  55     let
  56         val file' = #file (OS.Path.splitDirFile file)
  57         val file' = #base (OS.Path.splitBaseExt file')
  58     in
  59         file'
  60     end
  61
  62 fun context s =
  63     case providesContext (valOf (!prov), s) of
  64         NONE => string s
  65       | SOME m => style (HTMLDev.link (modify m ^ ".html#C_" ^ s), [string s])
  66 fun typ s =
  67     case providesType (valOf (!prov), s) of
  68         NONE => string s
  69       | SOME m => style (HTMLDev.link (modify m ^ ".html#T_" ^ s), [string s])
  70 fun exp s =
  71     case providesValue (valOf (!prov), s) of
  72         NONE => string s
  73       | SOME m => style (HTMLDev.link (modify m ^ ".html#V_" ^ s), [string s])
  74
  75 fun anchor (s, d) = style (HTMLDev.anchor s, [d])
  76 fun link (s, d) = style (HTMLDev.link s, [d])
  77
  78 type rendering = HTML.text
  79 fun openStream () =
  80     let
  81         val dev = HTMLDev.openDev {wid = 80,
  82                                    textWid = NONE}
  83     in
  84         SM.openStream dev
  85     end
  86 fun closeStream s = HTMLDev.done (SM.getDevice s)
  87
  88 end
  89
  90 structure HtmlPrint = PrintFn(HtmlPrintArg)