tools/bridge.ml

   1 let drop_spaces s =
   2   String.concat "" (Str.split (Str.regexp "[ ]+") s)
   3
   4 let parse_line fp l n =
   5   if List.mem l fp
   6   then None
   7   else
   8     if Str.string_match (Str.regexp "#") l 0
   9     then None (* comment line *)
  10     else
  11       let top_split = Str.split (Str.regexp ":") l in
  12       match top_split with
  13         cocci::first::others ->
  14           let rec loop tag = function
  15               [x] ->
  16                 let x =
  17                   String.concat "\\ " (Str.split (Str.regexp "[ ]+") x) in
  18                 [(tag,x)]
  19             | first::rest ->
  20                 let splitted = Str.split (Str.regexp "[ ]+") first in
  21                 (match List.rev splitted with
  22                   new_tag::info ->
  23                     let rest = loop new_tag rest in
  24                     (tag,String.concat "\\ " info)::rest
  25                 |       _ -> failwith "bad element")
  26             | _ -> failwith "no data" in
  27           Some (cocci,loop (drop_spaces first) others)
  28       | _ -> failwith (Printf.sprintf "bad line: %s" l)
  29
  30 let collect_lines fp i =
  31   let lines = ref [] in
  32   let ln = ref 0 in
  33   let rec loop _ =
  34     ln := !ln + 1;
  35     (match parse_line fp (input_line i) !ln with
  36       Some l ->
  37         if List.mem l !lines
  38         then ()
  39         else lines := l::!lines
  40     | None -> ());
  41     loop() in
  42   try loop() with End_of_file -> !lines
  43
  44 (* --------------------------------------------------------------------- *)
  45
  46 let process_fp fl =
  47   let i = open_in fl in
  48   let lines = ref ([] : string list) in
  49   let rec loop _ =
  50     let l = input_line i in
  51     (if not(Str.string_match (Str.regexp "#") l 0)
  52     then lines := l :: !lines);
  53     loop() in
  54   (try loop() with End_of_file -> ());
  55   close_in i;
  56   !lines
  57
  58 (* --------------------------------------------------------------------- *)
  59
  60 let discard_ambiguous lines =
  61   let rec loop = function
  62       [] -> []
  63     | (cocci,tags)::rest ->
  64         let (same,others) =
  65           List.partition
  66             (function (cocci2,tags2) -> tags = tags2 && not(cocci = cocci2))
  67             rest in
  68         match same with
  69           [] -> (cocci,tags)::loop rest
  70         | _ ->
  71             Printf.printf "ignoring ambiguity:\n";
  72             List.iter
  73               (function (cocci,tags) ->
  74                 Printf.printf "%s: %s\n" cocci
  75                   (String.concat ", "
  76                      (List.map
  77                         (function (tag,tagval) ->
  78                           Printf.sprintf "%s: %s" tag tagval)
  79                         tags)))
  80               ((cocci,tags)::same);
  81             loop others in
  82   loop lines
  83
  84 (* --------------------------------------------------------------------- *)
  85 (* only actually collects the rightmost element into ors *)
  86
  87 let split_or (cocci,line) =
  88   let rev = List.rev line in
  89   (cocci,List.rev(List.tl rev), List.hd rev)
  90
  91 let collect_ors fp lines =
  92   let rec loop = function
  93       [] -> failwith "no lines"
  94     | [line] ->
  95         let (c,k,v) = split_or line in
  96         ((c,k,[v]),[])
  97     | line::xs ->
  98         let (c,k,v) = split_or line in
  99         let ((c1,k1,v1),rest) = loop xs in
 100         if c = c1 && k = k1 && not (k = [])
 101         then
 102           if List.mem v v1
 103           then ((c1,k1,v1),rest)
 104           else ((c1,k1,v::v1),rest)
 105         else ((c,k,[v]),((c1,k1,v1)::rest)) in
 106   let ((c,k,v),rest) = loop lines in
 107   let res = (c,k,v)::rest in
 108   List.fold_left
 109     (function prev ->
 110       function (c,k,v) ->
 111         match v with
 112           [] -> failwith "not possible"
 113         | [x] -> (c,k@v) :: prev
 114         | (tag,_)::_ ->
 115             (*let vs =
 116               Printf.sprintf "%s:(%s)" tag
 117                 (String.concat "|"
 118                    (List.sort compare
 119                       (List.map (function (_,vl) -> vl) v))) in
 120             let attempt =
 121               Printf.sprintf "%s: %s %s" c
 122                 (String.concat " " (List.map (function (k,v) -> k^":"^v) k))
 123                 vs in*)
 124             if true (*List.mem attempt fp*)
 125             then
 126               let vs =
 127                 Printf.sprintf "\\\\\\\\\\(%s\\\\\\\\\\)"
 128                   (String.concat "\\\\\\\\\\|"
 129                      (List.sort compare
 130                         (List.map (function (_,vl) -> vl) v))) in
 131               (c,k@[(tag,vs)]) :: prev
 132             else (List.map (function vi -> (c,k@[vi])) v) @ prev)
 133     [] res
 134
 135 (* --------------------------------------------------------------------- *)
 136
 137 let command s =
 138   let _ = Sys.command s in
 139   ()
 140
 141 let created = ref ([] : (string * (int ref * out_channel)) list)
 142
 143 let mktag n = Printf.sprintf "x%d" n
 144
 145 let created_files = ref ([] : (string * int ref) list)
 146
 147 let process_line env (cocci,tags) =
 148   let files = List.filter (function (c,f) -> c = cocci) env in
 149   List.iter
 150     (function (_,cocci_file) ->
 151       let resdir = Filename.chop_extension cocci_file in
 152       (if not(Sys.file_exists cocci_file)
 153       then failwith "no cocci file");
 154       let (n,o) =
 155         try List.assoc resdir !created
 156         with Not_found ->
 157           begin
 158             command
 159               (Printf.sprintf "/bin/rm -r -f %s; mkdir %s" resdir resdir);
 160             let files = Printf.sprintf "%s/files" resdir in
 161             let o = open_out files in
 162             Printf.fprintf o "all: real_all\n\n";
 163             let cell = ((ref 0),o) in
 164             created := (resdir,cell) :: !created;
 165             cell
 166           end in
 167       let temp_file = Filename.temp_file cocci ".cocci" in
 168       command (Printf.sprintf "cp %s %s" cocci_file temp_file);
 169       let first_tag_val =
 170         match tags with
 171           [] -> failwith "no tags"
 172         | (_,first_tag_val)::_ ->
 173             let cell =
 174               try List.assoc first_tag_val !created_files
 175               with Not_found ->
 176                 let c = ref (-1) in
 177                 created_files := (first_tag_val,c)::!created_files;
 178                 c in
 179             cell := !cell + 1;
 180             if !cell = 0
 181             then first_tag_val
 182             else Printf.sprintf "%s%d" first_tag_val !cell in
 183       List.iter
 184         (function (tag,tagval) ->
 185           command
 186             (Printf.sprintf "sed s/%s/%s/ %s > %s_out; cp %s_out %s"
 187                tag tagval temp_file temp_file temp_file temp_file))
 188         tags;
 189       command
 190         (Printf.sprintf "mv %s %s/%s.cocci" temp_file resdir first_tag_val);
 191       Printf.fprintf o "%s:\n\tmono_spatch_linux %s.cocci ${ARGS}\n\n"
 192         (mktag !n) first_tag_val;
 193       n := !n + 1)
 194     files
 195
 196 (* --------------------------------------------------------------------- *)
 197
 198 let rec mkenv = function
 199     [] -> []
 200   | [_] -> failwith "required arguments: file (category x cocci file)*"
 201   | category::cocci::rest ->
 202       if Filename.check_suffix cocci ".cocci"
 203       then (category,cocci)::mkenv rest
 204       else failwith "required arguments: file (category x cocci file)*"
 205
 206 let rec upto = function
 207     0 -> []
 208   | n -> (mktag (n-1)) :: (upto (n-1))
 209
 210 let _ =
 211   let (file,fp,env) =
 212     match List.tl(Array.to_list Sys.argv) with
 213       file::env ->
 214         let rec loop prev = function
 215             [] ->
 216               if prev = ""
 217               then ([],[])
 218               else ([prev],[])
 219           | x::xs ->
 220               try
 221                 let _ = Str.search_forward (Str.regexp ".cocci") x 0 in
 222                 if prev = ""
 223                 then ([],x::xs)
 224                 else ([],prev::x::xs)
 225               with Not_found ->
 226                 let (fp,env) = loop x xs in
 227                 if prev = ""
 228                 then (fp,env)
 229                 else (prev::fp,env) in
 230         let (fp,env) = loop "" env in
 231         (file,fp,mkenv env)
 232     | _ -> failwith "one argument expected" in
 233   let fp = List.fold_left (@) [] (List.map process_fp fp) in
 234   let i = open_in file in
 235   let lines = collect_lines fp i in
 236   let lines = collect_ors fp lines in
 237   close_in i;
 238   let lines = discard_ambiguous lines in
 239   List.iter (process_line env) lines;
 240   List.iter
 241     (function (resdir,(n,o)) ->
 242       Printf.fprintf o "real_all: %s\n"
 243         (String.concat " " (List.rev (upto !n)));
 244       close_out o)
 245     !created