| 1 | (* |
| 2 | * Dynamic web page generation with Standard ML |
| 3 | * Copyright (C) 2003-2004 Adam Chlipala |
| 4 | * |
| 5 | * This library is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU Lesser General Public |
| 7 | * License as published by the Free Software Foundation; either |
| 8 | * version 2.1 of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This library is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * Lesser General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Lesser General Public |
| 16 | * License along with this library; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | *) |
| 19 | |
| 20 | (* User-specifed runtime configuration *) |
| 21 | |
| 22 | structure Config :> CONFIG = |
| 23 | struct |
| 24 | open Settings |
| 25 | |
| 26 | datatype config = |
| 27 | CONFIG of {inPath : string, (* Directory for input sources *) |
| 28 | outPath : string, (* Working directory *) |
| 29 | pubPath : string, (* Directory in which to put actual CGI scripts *) |
| 30 | lib : string, (* Path to runtime library .cm file *) |
| 31 | compiler : string, (* Path to compiler library .cm file *) |
| 32 | sml : string, (* Path to sml program *) |
| 33 | printFn : string StringMap.map, (* Map from SML type names to text for functions to print |
| 34 | * their values *) |
| 35 | cm : string list, (* List of extra SML/CM files to use with this project *) |
| 36 | beforeT : string option, (* Template to run before every template execution *) |
| 37 | afterT : string option, (* Template to run after every successful template execution *) |
| 38 | exnT : string option (* Template to run after every template execution |
| 39 | * ending in an uncaught exception *)} |
| 40 | |
| 41 | fun inPath (CONFIG {inPath, ...}) = inPath |
| 42 | fun outPath (CONFIG {outPath, ...}) = outPath |
| 43 | fun pubPath (CONFIG {pubPath, ...}) = pubPath |
| 44 | fun lib (CONFIG {lib, ...}) = lib |
| 45 | fun sml (CONFIG {sml, ...}) = sml |
| 46 | fun compiler (CONFIG {compiler, ...}) = compiler |
| 47 | fun beforeT (CONFIG {beforeT, ...}) = beforeT |
| 48 | fun afterT (CONFIG {afterT, ...}) = afterT |
| 49 | fun exnT (CONFIG {exnT, ...}) = exnT |
| 50 | fun cm (CONFIG {cm, ...}) = cm |
| 51 | fun printFn (CONFIG {printFn, ...}) s = StringMap.find (printFn, s) |
| 52 | |
| 53 | fun expandPath path = |
| 54 | if size path >= 1 andalso String.sub (path, 0) <> #"/" then |
| 55 | OS.FileSys.getDir () ^ "/" ^ path |
| 56 | else |
| 57 | path |
| 58 | |
| 59 | fun read fname (config as CONFIG fields) = |
| 60 | let |
| 61 | val inf = TextIO.openIn fname |
| 62 | |
| 63 | fun read (fields as {inPath, outPath, pubPath, lib, compiler, cm, sml, printFn, beforeT, afterT, exnT}) = |
| 64 | (case TextIO.inputLine inf of |
| 65 | NONE => CONFIG fields |
| 66 | | SOME line => |
| 67 | (case String.tokens Char.isSpace line of |
| 68 | [] => read fields |
| 69 | | ["in", inPath] => read {inPath = expandPath inPath, outPath = outPath, pubPath = pubPath, |
| 70 | lib = lib, compiler = compiler, printFn = printFn, |
| 71 | cm = cm, sml = sml, |
| 72 | beforeT = beforeT, afterT = afterT, exnT = exnT} |
| 73 | | ["out", outPath] => read {inPath = inPath, outPath = expandPath outPath, pubPath = pubPath, |
| 74 | lib = lib, compiler = compiler, printFn = printFn, |
| 75 | cm = cm, sml = sml, |
| 76 | beforeT = beforeT, afterT = afterT, exnT = exnT} |
| 77 | | ["pub", pubPath] => read {inPath = inPath, outPath = outPath, pubPath = expandPath pubPath, |
| 78 | lib = lib, compiler = compiler, printFn = printFn, |
| 79 | cm = cm, sml = sml, |
| 80 | beforeT = beforeT, afterT = afterT, exnT = exnT} |
| 81 | | ["lib", lib] => read {inPath = inPath, outPath = outPath, pubPath = pubPath, |
| 82 | lib = lib, compiler = compiler, printFn = printFn, |
| 83 | cm = cm, sml = sml, |
| 84 | beforeT = beforeT, afterT = afterT, exnT = exnT} |
| 85 | | ["compiler", compiler] => read {inPath = inPath, outPath = outPath, pubPath = pubPath, |
| 86 | lib = lib, compiler = compiler, printFn = printFn, |
| 87 | cm = cm, sml = sml, |
| 88 | beforeT = beforeT, afterT = afterT, exnT = exnT} |
| 89 | | ["sml", sml] => read {inPath = inPath, outPath = outPath, pubPath = pubPath, |
| 90 | lib = lib, compiler = compiler, printFn = printFn, |
| 91 | cm = cm, sml = sml, |
| 92 | beforeT = beforeT, afterT = afterT, exnT = exnT} |
| 93 | | ["before", beforeT] => read {inPath = inPath, outPath = expandPath outPath, pubPath = pubPath, |
| 94 | lib = lib, compiler = compiler, printFn = printFn, |
| 95 | cm = cm, sml = sml, |
| 96 | beforeT = SOME beforeT, afterT = afterT, exnT = exnT} |
| 97 | | ["after", afterT] => read {inPath = inPath, outPath = outPath, pubPath = expandPath pubPath, |
| 98 | lib = lib, compiler = compiler, printFn = printFn, |
| 99 | cm = cm, sml = sml, |
| 100 | beforeT = beforeT, afterT = SOME afterT, exnT = exnT} |
| 101 | | ["exn", exnT] => read {inPath = inPath, outPath = outPath, pubPath = pubPath, |
| 102 | lib = lib, compiler = compiler, printFn = printFn, |
| 103 | cm = cm, sml = sml, |
| 104 | beforeT = beforeT, afterT = afterT, exnT = SOME exnT} |
| 105 | | "print"::rest => |
| 106 | let |
| 107 | fun split ([], _) = (print "Bad printFn directive\n"; |
| 108 | read fields) |
| 109 | | split ("="::after, befor) = |
| 110 | let |
| 111 | val befor = rev befor |
| 112 | fun toS [] = "" |
| 113 | | toS (h::t) = foldl (fn (s, acc) => acc ^ " " ^ s) h t |
| 114 | val printFn = StringMap.insert (printFn, toS befor, toS after) |
| 115 | in |
| 116 | read {inPath = inPath, outPath = outPath, pubPath = pubPath, |
| 117 | lib = lib, compiler = compiler, printFn = printFn, |
| 118 | cm = cm, sml = sml, |
| 119 | beforeT = beforeT, afterT = afterT, exnT = exnT} |
| 120 | end |
| 121 | | split (h::after, befor) = split (after, h::befor) |
| 122 | in |
| 123 | split (rest, []) |
| 124 | end |
| 125 | | ["cm", fname] => read {inPath = inPath, outPath = outPath, pubPath = pubPath, |
| 126 | lib = lib, compiler = compiler, printFn = printFn, |
| 127 | cm = fname::cm, sml = sml, |
| 128 | beforeT = beforeT, afterT = afterT, exnT = exnT} |
| 129 | | _ => (print "Unknown config directive\n"; |
| 130 | read fields))) |
| 131 | in |
| 132 | read fields |
| 133 | before TextIO.closeIn inf |
| 134 | end handle Io => config |
| 135 | |
| 136 | fun default () = |
| 137 | let |
| 138 | val cwd = OS.FileSys.getDir () |
| 139 | |
| 140 | val base = CONFIG {lib = mltdir ^ "/src/lib/sources.cm", |
| 141 | compiler = mltdir ^ "/src/sources.cm", |
| 142 | sml = smlbin, |
| 143 | inPath = cwd, |
| 144 | outPath = cwd, |
| 145 | pubPath = cwd, |
| 146 | printFn = StringMap.empty, |
| 147 | cm = [], |
| 148 | beforeT = NONE, |
| 149 | afterT = NONE, |
| 150 | exnT = NONE} |
| 151 | in |
| 152 | read defaultFile base |
| 153 | end |
| 154 | end |