1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- G N A T . D I R E C T O R Y _ O P E R A T I O N S . I T E R A T I O N --
9 -- Copyright (C) 2001-2003 Ada Core Technologies, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 with Ada.Characters.Handling;
35 with Ada.Strings.Fixed;
36 with Ada.Strings.Maps;
40 package body GNAT.Directory_Operations.Iteration is
49 (Root_Directory : Dir_Name_Str;
50 File_Pattern : String)
52 File_Regexp : constant Regexp.Regexp := Regexp.Compile (File_Pattern);
55 procedure Read_Directory (Directory : Dir_Name_Str);
56 -- Open Directory and read all entries. This routine is called
57 -- recursively for each sub-directories.
59 function Make_Pathname (Dir, File : String) return String;
60 -- Returns the pathname for File by adding Dir as prefix.
66 function Make_Pathname (Dir, File : String) return String is
68 if Dir (Dir'Last) = '/' or else Dir (Dir'Last) = '\' then
71 return Dir & Dir_Separator & File;
79 procedure Read_Directory (Directory : Dir_Name_Str) is
81 Buffer : String (1 .. 2_048);
86 Open (Dir, Directory);
89 Read (Dir, Buffer, Last);
93 Dir_Entry : constant String := Buffer (1 .. Last);
94 Pathname : constant String
95 := Make_Pathname (Directory, Dir_Entry);
97 if Regexp.Match (Dir_Entry, File_Regexp) then
102 Action (Pathname, Index, Quit);
112 -- Recursively call for sub-directories, except for . and ..
114 if not (Dir_Entry = "." or else Dir_Entry = "..")
115 and then OS_Lib.Is_Directory (Pathname)
117 Read_Directory (Pathname);
126 Read_Directory (Root_Directory);
129 -----------------------
130 -- Wildcard_Iterator --
131 -----------------------
133 procedure Wildcard_Iterator (Path : Path_Name) is
135 Index : Natural := 0;
139 File_Pattern : String;
140 Suffix_Pattern : String);
141 -- Read entries in Directory and call user's callback if the entry
142 -- match File_Pattern and Suffix_Pattern is empty otherwise it will go
143 -- down one more directory level by calling Next_Level routine above.
146 (Current_Path : String;
147 Suffix_Path : String);
148 -- Extract next File_Pattern from Suffix_Path and call Read routine
156 (Current_Path : String;
157 Suffix_Path : String)
160 SP : String renames Suffix_Path;
164 and then SP (SP'First) = '.'
165 and then Strings.Maps.Is_In (SP (SP'First + 1), Dir_Seps)
167 -- Starting with "./"
169 DS := Strings.Fixed.Index
170 (SP (SP'First + 2 .. SP'Last),
177 Read (Current_Path & ".", "*", "");
182 Read (Current_Path & ".",
183 SP (SP'First + 2 .. DS - 1),
188 and then SP (SP'First .. SP'First + 1) = ".."
189 and then Strings.Maps.Is_In (SP (SP'First + 2), Dir_Seps)
191 -- Starting with "../"
193 DS := Strings.Fixed.Index
194 (SP (SP'First + 3 .. SP'Last), Dir_Seps);
200 Read (Current_Path & "..", "*", "");
205 Read (Current_Path & "..",
206 SP (SP'First + 4 .. DS - 1),
210 elsif Current_Path = ""
211 and then SP'Length > 1
212 and then Characters.Handling.Is_Letter (SP (SP'First))
213 and then SP (SP'First + 1) = ':'
215 -- Starting with "<drive>:"
218 and then Strings.Maps.Is_In (SP (SP'First + 2), Dir_Seps)
220 -- Starting with "<drive>:\"
222 DS := Strings.Fixed.Index
223 (SP (SP'First + 3 .. SP'Last), Dir_Seps);
227 -- We have "<drive>:\dir"
229 Read (SP (SP'First .. SP'First + 2),
230 SP (SP'First + 3 .. SP'Last),
234 -- We have "<drive>:\dir\kkk"
236 Read (SP (SP'First .. SP'First + 2),
237 SP (SP'First + 3 .. DS - 1),
242 -- Starting with "<drive>:" and the drive letter not followed
243 -- by a directory separator. The proper semantic on Windows is
244 -- to read the content of the current selected directory on
245 -- this drive. For example, if drive C current selected
246 -- directory is c:\temp the suffix pattern "c:m*" is
247 -- equivalent to c:\temp\m*.
249 DS := Strings.Fixed.Index
250 (SP (SP'First + 2 .. SP'Last), Dir_Seps);
254 -- We have "<drive>:dir"
259 -- We have "<drive>:dir/kkk"
261 Read (SP (SP'First .. DS - 1), "", SP (DS .. SP'Last));
265 elsif Strings.Maps.Is_In (SP (SP'First), Dir_Seps) then
269 DS := Strings.Fixed.Index
270 (SP (SP'First + 1 .. SP'Last), Dir_Seps);
276 Read (Current_Path, SP (SP'First + 1 .. SP'Last), "");
278 -- We have "/dir/kkk"
281 SP (SP'First + 1 .. DS - 1),
286 -- Starting with a name
288 DS := Strings.Fixed.Index (SP, Dir_Seps);
294 Read (Current_Path & '.', SP, "");
298 Read (Current_Path & '.',
299 SP (SP'First .. DS - 1),
310 Quit : Boolean := False;
311 -- Global state to be able to exit all recursive calls.
315 File_Pattern : String;
316 Suffix_Pattern : String)
318 File_Regexp : constant Regexp.Regexp :=
319 Regexp.Compile (File_Pattern, Glob => True);
321 Buffer : String (1 .. 2_048);
325 if OS_Lib.Is_Directory (Directory) then
326 Open (Dir, Directory);
329 Read (Dir, Buffer, Last);
330 exit Dir_Iterator when Last = 0;
333 Dir_Entry : constant String := Buffer (1 .. Last);
334 Pathname : constant String :=
335 Directory & Dir_Separator & Dir_Entry;
337 -- Handle "." and ".." only if explicit use in the
341 ((Dir_Entry = "." and then File_Pattern /= ".")
343 (Dir_Entry = ".." and then File_Pattern /= ".."))
345 if Regexp.Match (Dir_Entry, File_Regexp) then
347 if Suffix_Pattern = "" then
349 -- No more matching needed, call user's callback
354 Action (Pathname, Index, Quit);
362 exit Dir_Iterator when Quit;
368 (Directory & Dir_Separator & Dir_Entry,
375 exit Dir_Iterator when Quit;
377 end loop Dir_Iterator;
384 Next_Level ("", Path);
385 end Wildcard_Iterator;
387 end GNAT.Directory_Operations.Iteration;