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[smlnj] Diff of /sml/trunk/src/cm/main/filename-policy.sml
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Diff of /sml/trunk/src/cm/main/filename-policy.sml

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revision 297, Thu May 27 08:29:19 1999 UTC revision 329, Fri Jun 11 09:53:10 1999 UTC
# Line 1  Line 1 
 (* just a placeholder so far *)  
   
1  (*  (*
2   * A type representing different choices for file naming conventions.   * A type representing different choices for file naming conventions.
3   *   *
# Line 10  Line 8 
8  signature FILENAMEPOLICY = sig  signature FILENAMEPOLICY = sig
9    
10      type policy      type policy
11        type policyMaker = { arch: string, os: SMLofNJ.SysInfo.os_kind } -> policy
12    
13      val default : policy      val colocate : policyMaker
14        val separate :
15            { root: AbsPath.t, parentArc: string, absArc: string } -> policyMaker
16    
17      val mkBinPath : policy -> AbsPath.t -> AbsPath.t      val mkBinPath : policy -> AbsPath.t -> AbsPath.t
18      val mkSkelPath : policy -> AbsPath.t -> AbsPath.t      val mkSkelPath : policy -> AbsPath.t -> AbsPath.t
# Line 20  Line 21 
21    
22  structure FilenamePolicy :> FILENAMEPOLICY = struct  structure FilenamePolicy :> FILENAMEPOLICY = struct
23    
24      type policy = Dummy.t      type converter = AbsPath.t -> AbsPath.t
25    
26        type policy = { bin: converter, skel: converter, stable: converter }
27        type policyMaker = { arch: string, os: SMLofNJ.SysInfo.os_kind } -> policy
28    
29      val default = Dummy.v      fun kind2name SMLofNJ.SysInfo.BEOS = "beos"
30          | kind2name SMLofNJ.SysInfo.MACOS = "macos"
31          | kind2name SMLofNJ.SysInfo.OS2 = "os2"
32          | kind2name SMLofNJ.SysInfo.UNIX = "unix"
33          | kind2name SMLofNJ.SysInfo.WIN32 = "win32"
34    
35      fun cmpath (d, s) = let      fun mkPolicy shift { arch, os } = let
36            fun cmpath d s = let
37          val { dir = d0, file = f } = AbsPath.splitDirFile s          val { dir = d0, file = f } = AbsPath.splitDirFile s
38          val d1 = AbsPath.joinDirFile { dir = d0, file = "CM" }          val d1 = AbsPath.joinDirFile { dir = d0, file = "CM" }
39          val d2 = AbsPath.joinDirFile { dir = d1, file = d }          val d2 = AbsPath.joinDirFile { dir = d1, file = d }
40      in      in
41          AbsPath.joinDirFile { dir = d2, file = f }          AbsPath.joinDirFile { dir = d2, file = f }
42      end      end
43            val archos = concat [arch, "-", kind2name os]
44            val archosdep = cmpath archos o shift
45        in
46            { skel = cmpath "SKEL", bin = archosdep, stable = archosdep }
47        end
48    
49        val colocate = mkPolicy (fn s => s)
50    
51        fun separate { root, parentArc, absArc } = let
52            val root = AbsPath.relativeContext root
53            fun shift p = let
54                val s = AbsPath.name p
55                fun cvt arc = if arc = OS.Path.parentArc then parentArc else arc
56            in
57                case OS.Path.fromString s of
58                    { isAbs = false, vol = "", arcs } =>
59                        AbsPath.native { context = root,
60                                         spec = OS.Path.toString
61                                             { isAbs = false, vol = "",
62                                               arcs = map cvt arcs } }
63                  | _ => AbsPath.native
64                        { context = root,
65                          spec = OS.Path.joinDirFile { dir = absArc,
66                                                       file = AbsPath.file p } }
67            end
68        in
69            mkPolicy shift
70        end
71    
72      fun mkBinPath _ s = cmpath ("bin", s)      fun mkBinPath (p: policy) s = #bin p s
73      fun mkSkelPath _ s = cmpath ("SKEL", s)      fun mkSkelPath (p: policy) s = #skel p s
74      fun mkStablePath _ s = cmpath ("bin", s)      fun mkStablePath (p: policy) s = #stable p s
75  end  end

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