Mercurial > urweb
view src/demo.sml @ 1505:8c851e5508a7
Tutorial: up to First-Class Polymorphism
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Sun, 17 Jul 2011 11:00:04 -0400 |
| parents | 2f5fd248588d |
| children | efe1a2e9e4de |
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(* Copyright (c) 2008-2010, Adam Chlipala * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - The names of contributors may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. *) structure Demo :> DEMO = struct val noEmacs = ref false fun make' {prefix, dirname, guided} = let val prose = OS.Path.joinDirFile {dir = dirname, file = "prose"} val inf = TextIO.openIn prose val outDir = OS.Path.concat (dirname, "out") val () = if OS.FileSys.access (outDir, []) then () else OS.FileSys.mkDir outDir val fname = OS.Path.joinDirFile {dir = outDir, file = "index.html"} val out = TextIO.openOut fname val () = (TextIO.output (out, "<frameset cols=\"15%,85%\">\n"); TextIO.output (out, "<frame src=\"demos.html\">\n"); TextIO.output (out, "<frame src=\"intro.html\" name=\"staging\">\n"); TextIO.output (out, "</frameset>\n"); TextIO.closeOut out) val fname = OS.Path.joinDirFile {dir = outDir, file = "demos.html"} val demosOut = TextIO.openOut fname val () = (TextIO.output (demosOut, "<html><body>\n\n"); TextIO.output (demosOut, "<li> <a target=\"staging\" href=\"intro.html\">Intro</a></li>\n\n")) val fname = OS.Path.joinDirFile {dir = dirname, file = "demo.urs"} val ursOut = TextIO.openOut fname val () = (TextIO.output (ursOut, "val main : unit -> transaction page\n"); TextIO.closeOut ursOut) val fname = OS.Path.joinDirFile {dir = dirname, file = "demo.ur"} val urOut = TextIO.openOut fname val () = TextIO.output (urOut, "fun main () = return <xml><body>\n") fun mergeWith f (o1, o2) = case (o1, o2) of (NONE, _) => o2 | (_, NONE) => o1 | (SOME v1, SOME v2) => SOME (f (v1, v2)) fun combiner (combined : Compiler.job, urp : Compiler.job) = { prefix = prefix, database = mergeWith (fn (v1, v2) => if v1 = v2 then v1 else raise Fail "Different demos want to use different database strings") (#database combined, #database urp), sources = foldl (fn (file, files) => if List.exists (fn x => x = file) files then files else files @ [file]) (#sources combined) (#sources urp), exe = case Settings.getExe () of NONE => OS.Path.joinDirFile {dir = dirname, file = "demo.exe"} | SOME s => s, sql = SOME (case Settings.getSql () of NONE => OS.Path.joinDirFile {dir = dirname, file = "demo.sql"} | SOME s => s), debug = Settings.getDebug (), timeout = Int.max (#timeout combined, #timeout urp), profile = false, ffi = [], link = [], headers = [], scripts = [], clientToServer = [], effectful = [], benignEffectful = [], clientOnly = [], serverOnly = [], jsFuncs = [], rewrites = #rewrites combined @ #rewrites urp, filterUrl = #filterUrl combined @ #filterUrl urp, filterMime = #filterMime combined @ #filterMime urp, filterRequest = #filterRequest combined @ #filterRequest urp, filterResponse = #filterResponse combined @ #filterResponse urp, protocol = mergeWith #2 (#protocol combined, #protocol urp), dbms = mergeWith #2 (#dbms combined, #dbms urp), sigFile = mergeWith #2 (#sigFile combined, #sigFile urp), safeGets = [], onError = NONE, minHeap = 0 } val parse = Compiler.run (Compiler.transform Compiler.parseUrp "Demo parseUrp") fun capitalize "" = "" | capitalize s = str (Char.toUpper (String.sub (s, 0))) ^ String.extract (s, 1, NONE) fun startUrp urp = let val base = OS.Path.base urp val name = capitalize base val () = (TextIO.output (demosOut, "<li> <a target=\"staging\" href=\""); TextIO.output (demosOut, base); TextIO.output (demosOut, ".html\">"); TextIO.output (demosOut, name); TextIO.output (demosOut, "</a></li>\n")) val () = (TextIO.output (urOut, " <li> <a link={"); TextIO.output (urOut, name); TextIO.output (urOut, ".main ()}>"); TextIO.output (urOut, name); TextIO.output (urOut, "</a></li>\n")) val urp_file = OS.Path.joinDirFile {dir = dirname, file = urp} val out = OS.Path.joinBaseExt {base = base, ext = SOME "html"} val out = OS.Path.joinDirFile {dir = outDir, file = out} val out = TextIO.openOut out val () = (TextIO.output (out, "<frameset rows=\""); TextIO.output (out, if guided then "*,100" else "50%,*"); TextIO.output (out, "\">\n"); TextIO.output (out, "<frame src=\""); TextIO.output (out, prefix); TextIO.output (out, "/"); TextIO.output (out, name); TextIO.output (out, "/main\" name=\"showcase\">\n"); TextIO.output (out, "<frame src=\""); TextIO.output (out, base); TextIO.output (out, ".desc.html\">\n"); TextIO.output (out, "</frameset>\n"); TextIO.closeOut out) val () = TextIO.closeOut out val out = OS.Path.joinBaseExt {base = base, ext = SOME "desc"} val out = OS.Path.joinBaseExt {base = out, ext = SOME "html"} val out = TextIO.openOut (OS.Path.joinDirFile {dir = outDir, file = out}) in case parse (OS.Path.base urp_file) of NONE => raise Fail ("Can't parse " ^ urp_file) | SOME urpData => (TextIO.output (out, "<html><head>\n<title>"); TextIO.output (out, name); TextIO.output (out, "</title>\n</head><body>\n\n<h1>"); TextIO.output (out, name); TextIO.output (out, "</h1>\n\n<center>[ <a target=\"showcase\" href=\""); TextIO.output (out, prefix); TextIO.output (out, "/"); TextIO.output (out, name); TextIO.output (out, "/main\">Application</a>"); TextIO.output (out, " | <a target=\"showcase\" href=\""); TextIO.output (out, urp); TextIO.output (out, ".html\"><tt>"); TextIO.output (out, urp); TextIO.output (out, "</tt></a>"); app (fn file => let fun ifEx s = let val src = OS.Path.joinBaseExt {base = file, ext = SOME s} val src' = OS.Path.file src in if String.isPrefix (OS.Path.mkAbsolute {path = dirname, relativeTo = OS.FileSys.getDir ()}) src andalso OS.FileSys.access (src, []) then (TextIO.output (out, " | <a target=\"showcase\" href=\""); TextIO.output (out, src'); TextIO.output (out, ".html\"><tt>"); TextIO.output (out, src'); TextIO.output (out, "</tt></a>")) else () end in ifEx "urs"; ifEx "ur" end) (#sources urpData); TextIO.output (out, " ]</center>\n\n"); (urpData, out)) end fun endUrp out = (TextIO.output (out, "\n</body></html>\n"); TextIO.closeOut out) fun readUrp (combined, out) = let fun finished () = endUrp out fun readUrp' () = case TextIO.inputLine inf of NONE => (finished (); combined) | SOME line => if String.isSuffix ".urp\n" line then let val urp = String.substring (line, 0, size line - 1) val (urpData, out) = startUrp urp in finished (); readUrp (combiner (combined, urpData), out) end else (TextIO.output (out, line); readUrp' ()) in readUrp' () end val indexFile = OS.Path.joinDirFile {dir = outDir, file = "intro.html"} val out = TextIO.openOut indexFile val () = TextIO.output (out, "<html><head>\n<title>Ur/Web Demo</title>\n</head><body>\n\n") fun readIndex () = let fun finished () = (TextIO.output (out, "\n</body></html>\n"); TextIO.closeOut out) in case TextIO.inputLine inf of NONE => (finished (); NONE) | SOME line => if String.isSuffix ".urp\n" line then let val urp = String.substring (line, 0, size line - 1) val (urpData, out) = startUrp urp in finished (); SOME (readUrp (urpData, out)) end else (TextIO.output (out, line); readIndex ()) end fun prettyPrint () = let val dir = Posix.FileSys.opendir dirname fun loop () = case Posix.FileSys.readdir dir of NONE => Posix.FileSys.closedir dir | SOME file => let fun doit f = f (OS.Path.joinDirFile {dir = dirname, file = file}, OS.Path.mkAbsolute {relativeTo = OS.FileSys.getDir (), path = OS.Path.joinDirFile {dir = outDir, file = OS.Path.joinBaseExt {base = file, ext = SOME "html"}}}) fun highlight () = doit (fn (src, html) => let val dirty = let val srcSt = Posix.FileSys.stat src val htmlSt = Posix.FileSys.stat html in Time.> (Posix.FileSys.ST.mtime srcSt, Posix.FileSys.ST.mtime htmlSt) end handle OS.SysErr _ => true val cmd = "emacs --eval \"(progn " ^ "(global-font-lock-mode t) " ^ "(add-to-list 'load-path \\\"" ^ Config.sitelisp ^ "/\\\") " ^ "(load \\\"urweb-mode-startup\\\") " ^ "(urweb-mode) " ^ "(find-file \\\"" ^ src ^ "\\\") " ^ "(switch-to-buffer (htmlize-buffer)) " ^ "(write-file \\\"" ^ html ^ "\\\") " ^ "(kill-emacs))\"" in if dirty then (print (">>> " ^ cmd ^ "\n"); ignore (OS.Process.system cmd)) else () end) val highlight = fn () => if !noEmacs then () else highlight () in if OS.Path.base file = "demo" then () else case OS.Path.ext file of SOME "urp" => doit (fn (src, html) => let val inf = TextIO.openIn src val out = TextIO.openOut html fun loop () = case TextIO.inputLine inf of NONE => () | SOME line => (TextIO.output (out, line); loop ()) in TextIO.output (out, "<html><body>\n\n<pre>"); loop (); TextIO.output (out, "</pre>\n\n</body></html>"); TextIO.closeIn inf; TextIO.closeOut out end) | SOME "urs" => highlight () | SOME "ur" => highlight () | _ => (); loop () end in loop () end in case readIndex () of NONE => raise Fail "No demo applications!" | SOME combined => let val () = (TextIO.output (urOut, "</body></xml>\n"); TextIO.closeOut urOut) val fname = OS.Path.joinDirFile {dir = dirname, file = "demo.urp"} val outf = TextIO.openOut fname fun filters kind = app (fn rule : Settings.rule => (TextIO.output (outf, case #action rule of Settings.Allow => "allow" | Settings.Deny => "deny"); TextIO.output (outf, " "); TextIO.output (outf, kind); TextIO.output (outf, " "); TextIO.output (outf, #pattern rule); case #kind rule of Settings.Exact => () | Settings.Prefix => TextIO.output (outf, "*"); TextIO.output (outf, "\n"))) in Option.app (fn db => (TextIO.output (outf, "database "); TextIO.output (outf, db); TextIO.output (outf, "\n"))) (#database combined); TextIO.output (outf, "sql demo.sql\n"); TextIO.output (outf, "prefix "); TextIO.output (outf, prefix); TextIO.output (outf, "\n"); app (fn rule => (TextIO.output (outf, "rewrite "); TextIO.output (outf, case #pkind rule of Settings.Any => "any" | Settings.Url => "url" | Settings.Table => "table" | Settings.Sequence => "sequence" | Settings.View => "view" | Settings.Relation => "relation" | Settings.Cookie => "cookie" | Settings.Style => "style"); TextIO.output (outf, " "); TextIO.output (outf, #from rule); case #kind rule of Settings.Exact => () | Settings.Prefix => TextIO.output (outf, "*"); TextIO.output (outf, " "); TextIO.output (outf, #to rule); TextIO.output (outf, "\n"))) (#rewrites combined); filters "url" (#filterUrl combined); filters "mime" (#filterMime combined); TextIO.output (outf, "\n"); app (fn s => let val s = OS.Path.mkAbsolute {relativeTo = OS.FileSys.getDir (), path = s} in TextIO.output (outf, s); TextIO.output (outf, "\n") end) (#sources combined); TextIO.output (outf, "\n"); TextIO.output (outf, "demo\n"); TextIO.closeOut outf; let val b = Compiler.compile (OS.Path.base fname) in TextIO.output (demosOut, "\n</body></html>\n"); TextIO.closeOut demosOut; if b then prettyPrint () else (); b end end end fun make args = if make' args then () else OS.Process.exit OS.Process.failure end