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30681738 RD |
1 | ------------------------------------------------------------------------------ |
2 | -- -- | |
3 | -- GNAT COMPILER COMPONENTS -- | |
4 | -- -- | |
5 | -- S Y S T E M . O S _ L I B -- | |
6 | -- -- | |
7 | -- B o d y -- | |
8 | -- -- | |
2ae395d6 | 9 | -- Copyright (C) 1995-2013, AdaCore -- |
30681738 RD |
10 | -- -- |
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- -- | |
607d0635 | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
30681738 RD |
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 -- | |
607d0635 AC |
16 | -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
17 | -- -- | |
18 | -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
19 | -- additional permissions described in the GCC Runtime Library Exception, -- | |
20 | -- version 3.1, as published by the Free Software Foundation. -- | |
21 | -- -- | |
22 | -- You should have received a copy of the GNU General Public License and -- | |
23 | -- a copy of the GCC Runtime Library Exception along with this program; -- | |
24 | -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
25 | -- <http://www.gnu.org/licenses/>. -- | |
30681738 RD |
26 | -- -- |
27 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
28 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
29 | -- -- | |
30 | ------------------------------------------------------------------------------ | |
31 | ||
2d9ea47f | 32 | pragma Compiler_Unit; |
2d9ea47f | 33 | |
30681738 RD |
34 | with Ada.Unchecked_Conversion; |
35 | with Ada.Unchecked_Deallocation; | |
36 | with System; use System; | |
75685ef7 PO |
37 | with System.Case_Util; |
38 | with System.CRTL; | |
39 | with System.Soft_Links; | |
30681738 RD |
40 | |
41 | package body System.OS_Lib is | |
42 | ||
43 | -- Imported procedures Dup and Dup2 are used in procedures Spawn and | |
44 | -- Non_Blocking_Spawn. | |
45 | ||
46 | function Dup (Fd : File_Descriptor) return File_Descriptor; | |
47 | pragma Import (C, Dup, "__gnat_dup"); | |
48 | ||
49 | procedure Dup2 (Old_Fd, New_Fd : File_Descriptor); | |
50 | pragma Import (C, Dup2, "__gnat_dup2"); | |
51 | ||
52 | On_Windows : constant Boolean := Directory_Separator = '\'; | |
53 | -- An indication that we are on Windows. Used in Normalize_Pathname, to | |
54 | -- deal with drive letters in the beginning of absolute paths. | |
55 | ||
56 | package SSL renames System.Soft_Links; | |
57 | ||
58 | -- The following are used by Create_Temp_File | |
59 | ||
60 | First_Temp_File_Name : constant String := "GNAT-TEMP-000000.TMP"; | |
61 | -- Used to initialize Current_Temp_File_Name and Temp_File_Name_Last_Digit | |
62 | ||
63 | Current_Temp_File_Name : String := First_Temp_File_Name; | |
64 | -- Name of the temp file last created | |
65 | ||
66 | Temp_File_Name_Last_Digit : constant Positive := | |
67 | First_Temp_File_Name'Last - 4; | |
68 | -- Position of the last digit in Current_Temp_File_Name | |
69 | ||
70 | Max_Attempts : constant := 100; | |
71 | -- The maximum number of attempts to create a new temp file | |
72 | ||
73 | ----------------------- | |
74 | -- Local Subprograms -- | |
75 | ----------------------- | |
76 | ||
77 | function Args_Length (Args : Argument_List) return Natural; | |
76b84bf0 AC |
78 | -- Returns total number of characters needed to create a string of all Args |
79 | -- terminated by ASCII.NUL characters. | |
30681738 | 80 | |
477b99b6 | 81 | procedure Create_Temp_File_Internal |
76b84bf0 AC |
82 | (FD : out File_Descriptor; |
83 | Name : out String_Access; | |
84 | Stdout : Boolean); | |
477b99b6 AC |
85 | -- Internal routine to implement two Create_Temp_File routines. If Stdout |
86 | -- is set to True the created descriptor is stdout-compatible, otherwise | |
87 | -- it might not be depending on the OS (VMS is one example). The first two | |
88 | -- parameters are as in Create_Temp_File. | |
89 | ||
30681738 RD |
90 | function C_String_Length (S : Address) return Integer; |
91 | -- Returns the length of a C string. Does check for null address | |
92 | -- (returns 0). | |
93 | ||
94 | procedure Spawn_Internal | |
95 | (Program_Name : String; | |
96 | Args : Argument_List; | |
97 | Result : out Integer; | |
98 | Pid : out Process_Id; | |
99 | Blocking : Boolean); | |
100 | -- Internal routine to implement the two Spawn (blocking/non blocking) | |
101 | -- routines. If Blocking is set to True then the spawn is blocking | |
102 | -- otherwise it is non blocking. In this latter case the Pid contains the | |
103 | -- process id number. The first three parameters are as in Spawn. Note that | |
104 | -- Spawn_Internal normalizes the argument list before calling the low level | |
105 | -- system spawn routines (see Normalize_Arguments). | |
106 | -- | |
107 | -- Note: Normalize_Arguments is designed to do nothing if it is called more | |
108 | -- than once, so calling Normalize_Arguments before calling one of the | |
109 | -- spawn routines is fine. | |
110 | ||
111 | function To_Path_String_Access | |
112 | (Path_Addr : Address; | |
113 | Path_Len : Integer) return String_Access; | |
114 | -- Converts a C String to an Ada String. We could do this making use of | |
115 | -- Interfaces.C.Strings but we prefer not to import that entire package | |
116 | ||
117 | --------- | |
118 | -- "<" -- | |
119 | --------- | |
120 | ||
121 | function "<" (X, Y : OS_Time) return Boolean is | |
122 | begin | |
123 | return Long_Integer (X) < Long_Integer (Y); | |
124 | end "<"; | |
125 | ||
126 | ---------- | |
127 | -- "<=" -- | |
128 | ---------- | |
129 | ||
130 | function "<=" (X, Y : OS_Time) return Boolean is | |
131 | begin | |
132 | return Long_Integer (X) <= Long_Integer (Y); | |
133 | end "<="; | |
134 | ||
135 | --------- | |
136 | -- ">" -- | |
137 | --------- | |
138 | ||
139 | function ">" (X, Y : OS_Time) return Boolean is | |
140 | begin | |
141 | return Long_Integer (X) > Long_Integer (Y); | |
142 | end ">"; | |
143 | ||
144 | ---------- | |
145 | -- ">=" -- | |
146 | ---------- | |
147 | ||
148 | function ">=" (X, Y : OS_Time) return Boolean is | |
149 | begin | |
150 | return Long_Integer (X) >= Long_Integer (Y); | |
151 | end ">="; | |
152 | ||
153 | ----------------- | |
154 | -- Args_Length -- | |
155 | ----------------- | |
156 | ||
157 | function Args_Length (Args : Argument_List) return Natural is | |
158 | Len : Natural := 0; | |
159 | ||
160 | begin | |
161 | for J in Args'Range loop | |
162 | Len := Len + Args (J)'Length + 1; -- One extra for ASCII.NUL | |
163 | end loop; | |
164 | ||
165 | return Len; | |
166 | end Args_Length; | |
167 | ||
168 | ----------------------------- | |
169 | -- Argument_String_To_List -- | |
170 | ----------------------------- | |
171 | ||
172 | function Argument_String_To_List | |
173 | (Arg_String : String) return Argument_List_Access | |
174 | is | |
175 | Max_Args : constant Integer := Arg_String'Length; | |
176 | New_Argv : Argument_List (1 .. Max_Args); | |
177 | New_Argc : Natural := 0; | |
178 | Idx : Integer; | |
179 | ||
180 | begin | |
181 | Idx := Arg_String'First; | |
182 | ||
183 | loop | |
184 | exit when Idx > Arg_String'Last; | |
185 | ||
186 | declare | |
187 | Quoted : Boolean := False; | |
188 | Backqd : Boolean := False; | |
189 | Old_Idx : Integer; | |
190 | ||
191 | begin | |
192 | Old_Idx := Idx; | |
193 | ||
194 | loop | |
195 | -- An unquoted space is the end of an argument | |
196 | ||
197 | if not (Backqd or Quoted) | |
198 | and then Arg_String (Idx) = ' ' | |
199 | then | |
200 | exit; | |
201 | ||
202 | -- Start of a quoted string | |
203 | ||
204 | elsif not (Backqd or Quoted) | |
205 | and then Arg_String (Idx) = '"' | |
206 | then | |
207 | Quoted := True; | |
208 | ||
209 | -- End of a quoted string and end of an argument | |
210 | ||
211 | elsif (Quoted and not Backqd) | |
212 | and then Arg_String (Idx) = '"' | |
213 | then | |
214 | Idx := Idx + 1; | |
215 | exit; | |
216 | ||
217 | -- Following character is backquoted | |
218 | ||
219 | elsif Arg_String (Idx) = '\' then | |
220 | Backqd := True; | |
221 | ||
222 | -- Turn off backquoting after advancing one character | |
223 | ||
224 | elsif Backqd then | |
225 | Backqd := False; | |
226 | ||
227 | end if; | |
228 | ||
229 | Idx := Idx + 1; | |
230 | exit when Idx > Arg_String'Last; | |
231 | end loop; | |
232 | ||
233 | -- Found an argument | |
234 | ||
235 | New_Argc := New_Argc + 1; | |
236 | New_Argv (New_Argc) := | |
237 | new String'(Arg_String (Old_Idx .. Idx - 1)); | |
238 | ||
239 | -- Skip extraneous spaces | |
240 | ||
241 | while Idx <= Arg_String'Last and then Arg_String (Idx) = ' ' loop | |
242 | Idx := Idx + 1; | |
243 | end loop; | |
244 | end; | |
245 | end loop; | |
246 | ||
247 | return new Argument_List'(New_Argv (1 .. New_Argc)); | |
248 | end Argument_String_To_List; | |
249 | ||
250 | --------------------- | |
251 | -- C_String_Length -- | |
252 | --------------------- | |
253 | ||
254 | function C_String_Length (S : Address) return Integer is | |
255 | function Strlen (S : Address) return Integer; | |
256 | pragma Import (C, Strlen, "strlen"); | |
257 | begin | |
258 | if S = Null_Address then | |
259 | return 0; | |
260 | else | |
261 | return Strlen (S); | |
262 | end if; | |
263 | end C_String_Length; | |
264 | ||
265 | ----------- | |
266 | -- Close -- | |
267 | ----------- | |
268 | ||
269 | procedure Close (FD : File_Descriptor) is | |
270 | procedure C_Close (FD : File_Descriptor); | |
271 | pragma Import (C, C_Close, "close"); | |
272 | begin | |
273 | C_Close (FD); | |
274 | end Close; | |
275 | ||
276 | procedure Close (FD : File_Descriptor; Status : out Boolean) is | |
277 | function C_Close (FD : File_Descriptor) return Integer; | |
278 | pragma Import (C, C_Close, "close"); | |
279 | begin | |
280 | Status := (C_Close (FD) = 0); | |
281 | end Close; | |
282 | ||
283 | --------------- | |
284 | -- Copy_File -- | |
285 | --------------- | |
286 | ||
287 | procedure Copy_File | |
288 | (Name : String; | |
289 | Pathname : String; | |
290 | Success : out Boolean; | |
291 | Mode : Copy_Mode := Copy; | |
292 | Preserve : Attribute := Time_Stamps) | |
293 | is | |
294 | From : File_Descriptor; | |
295 | To : File_Descriptor; | |
296 | ||
297 | Copy_Error : exception; | |
298 | -- Internal exception raised to signal error in copy | |
299 | ||
300 | function Build_Path (Dir : String; File : String) return String; | |
276e95ca | 301 | -- Returns pathname Dir concatenated with File adding the directory |
30681738 RD |
302 | -- separator only if needed. |
303 | ||
304 | procedure Copy (From, To : File_Descriptor); | |
305 | -- Read data from From and place them into To. In both cases the | |
306 | -- operations uses the current file position. Raises Constraint_Error | |
307 | -- if a problem occurs during the copy. | |
308 | ||
309 | procedure Copy_To (To_Name : String); | |
310 | -- Does a straight copy from source to designated destination file | |
311 | ||
312 | ---------------- | |
313 | -- Build_Path -- | |
314 | ---------------- | |
315 | ||
316 | function Build_Path (Dir : String; File : String) return String is | |
317 | Res : String (1 .. Dir'Length + File'Length + 1); | |
318 | ||
319 | Base_File_Ptr : Integer; | |
320 | -- The base file name is File (Base_File_Ptr + 1 .. File'Last) | |
321 | ||
322 | function Is_Dirsep (C : Character) return Boolean; | |
323 | pragma Inline (Is_Dirsep); | |
324 | -- Returns True if C is a directory separator. On Windows we | |
325 | -- handle both styles of directory separator. | |
326 | ||
327 | --------------- | |
328 | -- Is_Dirsep -- | |
329 | --------------- | |
330 | ||
331 | function Is_Dirsep (C : Character) return Boolean is | |
332 | begin | |
333 | return C = Directory_Separator or else C = '/'; | |
334 | end Is_Dirsep; | |
335 | ||
336 | -- Start of processing for Build_Path | |
337 | ||
338 | begin | |
339 | -- Find base file name | |
340 | ||
341 | Base_File_Ptr := File'Last; | |
342 | while Base_File_Ptr >= File'First loop | |
343 | exit when Is_Dirsep (File (Base_File_Ptr)); | |
344 | Base_File_Ptr := Base_File_Ptr - 1; | |
345 | end loop; | |
346 | ||
347 | declare | |
348 | Base_File : String renames | |
349 | File (Base_File_Ptr + 1 .. File'Last); | |
350 | ||
351 | begin | |
352 | Res (1 .. Dir'Length) := Dir; | |
353 | ||
354 | if Is_Dirsep (Dir (Dir'Last)) then | |
355 | Res (Dir'Length + 1 .. Dir'Length + Base_File'Length) := | |
356 | Base_File; | |
357 | return Res (1 .. Dir'Length + Base_File'Length); | |
358 | ||
359 | else | |
360 | Res (Dir'Length + 1) := Directory_Separator; | |
361 | Res (Dir'Length + 2 .. Dir'Length + 1 + Base_File'Length) := | |
362 | Base_File; | |
363 | return Res (1 .. Dir'Length + 1 + Base_File'Length); | |
364 | end if; | |
365 | end; | |
366 | end Build_Path; | |
367 | ||
368 | ---------- | |
369 | -- Copy -- | |
370 | ---------- | |
371 | ||
372 | procedure Copy (From, To : File_Descriptor) is | |
373 | Buf_Size : constant := 200_000; | |
374 | type Buf is array (1 .. Buf_Size) of Character; | |
375 | type Buf_Ptr is access Buf; | |
376 | ||
377 | Buffer : Buf_Ptr; | |
378 | R : Integer; | |
379 | W : Integer; | |
380 | ||
381 | Status_From : Boolean; | |
382 | Status_To : Boolean; | |
383 | -- Statuses for the calls to Close | |
384 | ||
385 | procedure Free is new Ada.Unchecked_Deallocation (Buf, Buf_Ptr); | |
386 | ||
387 | begin | |
388 | -- Check for invalid descriptors, making sure that we do not | |
389 | -- accidentally leave an open file descriptor around. | |
390 | ||
391 | if From = Invalid_FD then | |
392 | if To /= Invalid_FD then | |
393 | Close (To, Status_To); | |
394 | end if; | |
395 | ||
396 | raise Copy_Error; | |
397 | ||
398 | elsif To = Invalid_FD then | |
399 | Close (From, Status_From); | |
400 | raise Copy_Error; | |
401 | end if; | |
402 | ||
403 | -- Allocate the buffer on the heap | |
404 | ||
405 | Buffer := new Buf; | |
406 | ||
407 | loop | |
408 | R := Read (From, Buffer (1)'Address, Buf_Size); | |
409 | ||
410 | -- For VMS, the buffer may not be full. So, we need to try again | |
411 | -- until there is nothing to read. | |
412 | ||
413 | exit when R = 0; | |
414 | ||
415 | W := Write (To, Buffer (1)'Address, R); | |
416 | ||
417 | if W < R then | |
418 | ||
419 | -- Problem writing data, could be a disk full. Close files | |
420 | -- without worrying about status, since we are raising a | |
421 | -- Copy_Error exception in any case. | |
422 | ||
423 | Close (From, Status_From); | |
424 | Close (To, Status_To); | |
425 | ||
426 | Free (Buffer); | |
427 | ||
428 | raise Copy_Error; | |
429 | end if; | |
430 | end loop; | |
431 | ||
432 | Close (From, Status_From); | |
433 | Close (To, Status_To); | |
434 | ||
435 | Free (Buffer); | |
436 | ||
437 | if not (Status_From and Status_To) then | |
438 | raise Copy_Error; | |
439 | end if; | |
440 | end Copy; | |
441 | ||
442 | ------------- | |
443 | -- Copy_To -- | |
444 | ------------- | |
445 | ||
446 | procedure Copy_To (To_Name : String) is | |
447 | ||
448 | function Copy_Attributes | |
449 | (From, To : System.Address; | |
450 | Mode : Integer) return Integer; | |
451 | pragma Import (C, Copy_Attributes, "__gnat_copy_attribs"); | |
452 | -- Mode = 0 - copy only time stamps. | |
453 | -- Mode = 1 - copy time stamps and read/write/execute attributes | |
454 | ||
455 | C_From : String (1 .. Name'Length + 1); | |
456 | C_To : String (1 .. To_Name'Length + 1); | |
457 | ||
458 | begin | |
459 | From := Open_Read (Name, Binary); | |
e401e17b TQ |
460 | |
461 | -- Do not clobber destination file if source file could not be opened | |
462 | ||
463 | if From /= Invalid_FD then | |
464 | To := Create_File (To_Name, Binary); | |
465 | end if; | |
466 | ||
30681738 RD |
467 | Copy (From, To); |
468 | ||
469 | -- Copy attributes | |
470 | ||
471 | C_From (1 .. Name'Length) := Name; | |
43c6e0cb | 472 | C_From (C_From'Last) := ASCII.NUL; |
30681738 RD |
473 | |
474 | C_To (1 .. To_Name'Length) := To_Name; | |
43c6e0cb | 475 | C_To (C_To'Last) := ASCII.NUL; |
30681738 RD |
476 | |
477 | case Preserve is | |
478 | ||
479 | when Time_Stamps => | |
480 | if Copy_Attributes (C_From'Address, C_To'Address, 0) = -1 then | |
481 | raise Copy_Error; | |
482 | end if; | |
483 | ||
484 | when Full => | |
485 | if Copy_Attributes (C_From'Address, C_To'Address, 1) = -1 then | |
486 | raise Copy_Error; | |
487 | end if; | |
488 | ||
489 | when None => | |
490 | null; | |
491 | end case; | |
492 | ||
493 | end Copy_To; | |
494 | ||
495 | -- Start of processing for Copy_File | |
496 | ||
497 | begin | |
498 | Success := True; | |
499 | ||
500 | -- The source file must exist | |
501 | ||
502 | if not Is_Regular_File (Name) then | |
503 | raise Copy_Error; | |
504 | end if; | |
505 | ||
506 | -- The source file exists | |
507 | ||
508 | case Mode is | |
509 | ||
510 | -- Copy case, target file must not exist | |
511 | ||
512 | when Copy => | |
513 | ||
514 | -- If the target file exists, we have an error | |
515 | ||
516 | if Is_Regular_File (Pathname) then | |
517 | raise Copy_Error; | |
518 | ||
519 | -- Case of target is a directory | |
520 | ||
521 | elsif Is_Directory (Pathname) then | |
522 | declare | |
523 | Dest : constant String := Build_Path (Pathname, Name); | |
524 | ||
525 | begin | |
526 | -- If target file exists, we have an error, else do copy | |
527 | ||
528 | if Is_Regular_File (Dest) then | |
529 | raise Copy_Error; | |
530 | else | |
531 | Copy_To (Dest); | |
532 | end if; | |
533 | end; | |
534 | ||
535 | -- Case of normal copy to file (destination does not exist) | |
536 | ||
537 | else | |
538 | Copy_To (Pathname); | |
539 | end if; | |
540 | ||
541 | -- Overwrite case (destination file may or may not exist) | |
542 | ||
543 | when Overwrite => | |
544 | if Is_Directory (Pathname) then | |
545 | Copy_To (Build_Path (Pathname, Name)); | |
546 | else | |
547 | Copy_To (Pathname); | |
548 | end if; | |
549 | ||
550 | -- Append case (destination file may or may not exist) | |
551 | ||
552 | when Append => | |
553 | ||
554 | -- Appending to existing file | |
555 | ||
556 | if Is_Regular_File (Pathname) then | |
557 | ||
558 | -- Append mode and destination file exists, append data at the | |
e401e17b TQ |
559 | -- end of Pathname. But if we fail to open source file, do not |
560 | -- touch destination file at all. | |
30681738 RD |
561 | |
562 | From := Open_Read (Name, Binary); | |
e401e17b TQ |
563 | if From /= Invalid_FD then |
564 | To := Open_Read_Write (Pathname, Binary); | |
565 | end if; | |
566 | ||
30681738 RD |
567 | Lseek (To, 0, Seek_End); |
568 | ||
569 | Copy (From, To); | |
570 | ||
571 | -- Appending to directory, not allowed | |
572 | ||
573 | elsif Is_Directory (Pathname) then | |
574 | raise Copy_Error; | |
575 | ||
576 | -- Appending when target file does not exist | |
577 | ||
578 | else | |
579 | Copy_To (Pathname); | |
580 | end if; | |
581 | end case; | |
582 | ||
583 | -- All error cases are caught here | |
584 | ||
585 | exception | |
586 | when Copy_Error => | |
587 | Success := False; | |
588 | end Copy_File; | |
589 | ||
590 | procedure Copy_File | |
591 | (Name : C_File_Name; | |
592 | Pathname : C_File_Name; | |
593 | Success : out Boolean; | |
594 | Mode : Copy_Mode := Copy; | |
595 | Preserve : Attribute := Time_Stamps) | |
596 | is | |
8b79ad42 AC |
597 | Ada_Name : String_Access := |
598 | To_Path_String_Access | |
599 | (Name, C_String_Length (Name)); | |
30681738 RD |
600 | Ada_Pathname : String_Access := |
601 | To_Path_String_Access | |
602 | (Pathname, C_String_Length (Pathname)); | |
30681738 RD |
603 | begin |
604 | Copy_File (Ada_Name.all, Ada_Pathname.all, Success, Mode, Preserve); | |
605 | Free (Ada_Name); | |
606 | Free (Ada_Pathname); | |
607 | end Copy_File; | |
608 | ||
609 | ---------------------- | |
610 | -- Copy_Time_Stamps -- | |
611 | ---------------------- | |
612 | ||
613 | procedure Copy_Time_Stamps (Source, Dest : String; Success : out Boolean) is | |
30681738 RD |
614 | function Copy_Attributes |
615 | (From, To : System.Address; | |
616 | Mode : Integer) return Integer; | |
617 | pragma Import (C, Copy_Attributes, "__gnat_copy_attribs"); | |
618 | -- Mode = 0 - copy only time stamps. | |
619 | -- Mode = 1 - copy time stamps and read/write/execute attributes | |
620 | ||
621 | begin | |
622 | if Is_Regular_File (Source) and then Is_Writable_File (Dest) then | |
623 | declare | |
624 | C_Source : String (1 .. Source'Length + 1); | |
625 | C_Dest : String (1 .. Dest'Length + 1); | |
d61f428e | 626 | |
30681738 RD |
627 | begin |
628 | C_Source (1 .. Source'Length) := Source; | |
629 | C_Source (C_Source'Last) := ASCII.NUL; | |
630 | ||
631 | C_Dest (1 .. Dest'Length) := Dest; | |
632 | C_Dest (C_Dest'Last) := ASCII.NUL; | |
633 | ||
634 | if Copy_Attributes (C_Source'Address, C_Dest'Address, 0) = -1 then | |
635 | Success := False; | |
636 | else | |
637 | Success := True; | |
638 | end if; | |
639 | end; | |
640 | ||
641 | else | |
642 | Success := False; | |
643 | end if; | |
644 | end Copy_Time_Stamps; | |
645 | ||
646 | procedure Copy_Time_Stamps | |
647 | (Source, Dest : C_File_Name; | |
648 | Success : out Boolean) | |
649 | is | |
650 | Ada_Source : String_Access := | |
651 | To_Path_String_Access | |
652 | (Source, C_String_Length (Source)); | |
8b79ad42 AC |
653 | Ada_Dest : String_Access := |
654 | To_Path_String_Access | |
655 | (Dest, C_String_Length (Dest)); | |
30681738 RD |
656 | begin |
657 | Copy_Time_Stamps (Ada_Source.all, Ada_Dest.all, Success); | |
658 | Free (Ada_Source); | |
659 | Free (Ada_Dest); | |
660 | end Copy_Time_Stamps; | |
661 | ||
662 | ----------------- | |
663 | -- Create_File -- | |
664 | ----------------- | |
665 | ||
666 | function Create_File | |
667 | (Name : C_File_Name; | |
668 | Fmode : Mode) return File_Descriptor | |
669 | is | |
670 | function C_Create_File | |
671 | (Name : C_File_Name; | |
672 | Fmode : Mode) return File_Descriptor; | |
673 | pragma Import (C, C_Create_File, "__gnat_open_create"); | |
30681738 RD |
674 | begin |
675 | return C_Create_File (Name, Fmode); | |
676 | end Create_File; | |
677 | ||
678 | function Create_File | |
679 | (Name : String; | |
680 | Fmode : Mode) return File_Descriptor | |
681 | is | |
682 | C_Name : String (1 .. Name'Length + 1); | |
30681738 RD |
683 | begin |
684 | C_Name (1 .. Name'Length) := Name; | |
685 | C_Name (C_Name'Last) := ASCII.NUL; | |
686 | return Create_File (C_Name (C_Name'First)'Address, Fmode); | |
687 | end Create_File; | |
688 | ||
689 | --------------------- | |
690 | -- Create_New_File -- | |
691 | --------------------- | |
692 | ||
693 | function Create_New_File | |
694 | (Name : C_File_Name; | |
695 | Fmode : Mode) return File_Descriptor | |
696 | is | |
697 | function C_Create_New_File | |
698 | (Name : C_File_Name; | |
699 | Fmode : Mode) return File_Descriptor; | |
700 | pragma Import (C, C_Create_New_File, "__gnat_open_new"); | |
30681738 RD |
701 | begin |
702 | return C_Create_New_File (Name, Fmode); | |
703 | end Create_New_File; | |
704 | ||
705 | function Create_New_File | |
706 | (Name : String; | |
707 | Fmode : Mode) return File_Descriptor | |
708 | is | |
709 | C_Name : String (1 .. Name'Length + 1); | |
30681738 RD |
710 | begin |
711 | C_Name (1 .. Name'Length) := Name; | |
712 | C_Name (C_Name'Last) := ASCII.NUL; | |
713 | return Create_New_File (C_Name (C_Name'First)'Address, Fmode); | |
714 | end Create_New_File; | |
715 | ||
716 | ----------------------------- | |
717 | -- Create_Output_Text_File -- | |
718 | ----------------------------- | |
719 | ||
720 | function Create_Output_Text_File (Name : String) return File_Descriptor is | |
721 | function C_Create_File | |
722 | (Name : C_File_Name) return File_Descriptor; | |
723 | pragma Import (C, C_Create_File, "__gnat_create_output_file"); | |
30681738 | 724 | C_Name : String (1 .. Name'Length + 1); |
30681738 RD |
725 | begin |
726 | C_Name (1 .. Name'Length) := Name; | |
727 | C_Name (C_Name'Last) := ASCII.NUL; | |
728 | return C_Create_File (C_Name (C_Name'First)'Address); | |
729 | end Create_Output_Text_File; | |
730 | ||
731 | ---------------------- | |
732 | -- Create_Temp_File -- | |
733 | ---------------------- | |
734 | ||
735 | procedure Create_Temp_File | |
736 | (FD : out File_Descriptor; | |
737 | Name : out Temp_File_Name) | |
738 | is | |
739 | function Open_New_Temp | |
740 | (Name : System.Address; | |
741 | Fmode : Mode) return File_Descriptor; | |
742 | pragma Import (C, Open_New_Temp, "__gnat_open_new_temp"); | |
743 | ||
744 | begin | |
745 | FD := Open_New_Temp (Name'Address, Binary); | |
746 | end Create_Temp_File; | |
747 | ||
748 | procedure Create_Temp_File | |
749 | (FD : out File_Descriptor; | |
750 | Name : out String_Access) | |
477b99b6 AC |
751 | is |
752 | begin | |
753 | Create_Temp_File_Internal (FD, Name, Stdout => False); | |
754 | end Create_Temp_File; | |
755 | ||
13f39091 AC |
756 | ----------------------------- |
757 | -- Create_Temp_Output_File -- | |
758 | ----------------------------- | |
759 | ||
477b99b6 AC |
760 | procedure Create_Temp_Output_File |
761 | (FD : out File_Descriptor; | |
762 | Name : out String_Access) | |
763 | is | |
764 | begin | |
765 | Create_Temp_File_Internal (FD, Name, Stdout => True); | |
766 | end Create_Temp_Output_File; | |
767 | ||
768 | ------------------------------- | |
769 | -- Create_Temp_File_Internal -- | |
770 | ------------------------------- | |
771 | ||
772 | procedure Create_Temp_File_Internal | |
13f39091 AC |
773 | (FD : out File_Descriptor; |
774 | Name : out String_Access; | |
775 | Stdout : Boolean) | |
30681738 RD |
776 | is |
777 | Pos : Positive; | |
778 | Attempts : Natural := 0; | |
779 | Current : String (Current_Temp_File_Name'Range); | |
780 | ||
fdfcc663 AC |
781 | function Create_New_Output_Text_File |
782 | (Name : String) return File_Descriptor; | |
783 | -- Similar to Create_Output_Text_File, except it fails if the file | |
784 | -- already exists. We need this behavior to ensure we don't accidentally | |
785 | -- open a temp file that has just been created by a concurrently running | |
786 | -- process. There is no point exposing this function, as it's generally | |
787 | -- not particularly useful. | |
788 | ||
13f39091 AC |
789 | --------------------------------- |
790 | -- Create_New_Output_Text_File -- | |
791 | --------------------------------- | |
792 | ||
fdfcc663 | 793 | function Create_New_Output_Text_File |
13f39091 AC |
794 | (Name : String) return File_Descriptor |
795 | is | |
fdfcc663 AC |
796 | function C_Create_File |
797 | (Name : C_File_Name) return File_Descriptor; | |
798 | pragma Import (C, C_Create_File, "__gnat_create_output_file_new"); | |
fdfcc663 | 799 | C_Name : String (1 .. Name'Length + 1); |
fdfcc663 AC |
800 | begin |
801 | C_Name (1 .. Name'Length) := Name; | |
802 | C_Name (C_Name'Last) := ASCII.NUL; | |
803 | return C_Create_File (C_Name (C_Name'First)'Address); | |
804 | end Create_New_Output_Text_File; | |
805 | ||
30681738 RD |
806 | begin |
807 | -- Loop until a new temp file can be created | |
808 | ||
809 | File_Loop : loop | |
810 | Locked : begin | |
13f39091 | 811 | |
30681738 RD |
812 | -- We need to protect global variable Current_Temp_File_Name |
813 | -- against concurrent access by different tasks. | |
814 | ||
815 | SSL.Lock_Task.all; | |
816 | ||
817 | -- Start at the last digit | |
818 | ||
819 | Pos := Temp_File_Name_Last_Digit; | |
820 | ||
821 | Digit_Loop : | |
822 | loop | |
823 | -- Increment the digit by one | |
824 | ||
825 | case Current_Temp_File_Name (Pos) is | |
826 | when '0' .. '8' => | |
827 | Current_Temp_File_Name (Pos) := | |
828 | Character'Succ (Current_Temp_File_Name (Pos)); | |
829 | exit Digit_Loop; | |
830 | ||
831 | when '9' => | |
832 | ||
833 | -- For 9, set the digit to 0 and go to the previous digit | |
834 | ||
835 | Current_Temp_File_Name (Pos) := '0'; | |
836 | Pos := Pos - 1; | |
837 | ||
838 | when others => | |
839 | ||
840 | -- If it is not a digit, then there are no available | |
13f39091 AC |
841 | -- temp file names. Return Invalid_FD. There is almost no |
842 | -- chance that this code will be ever be executed, since | |
843 | -- it would mean that there are one million temp files in | |
844 | -- the same directory. | |
30681738 RD |
845 | |
846 | SSL.Unlock_Task.all; | |
847 | FD := Invalid_FD; | |
848 | Name := null; | |
849 | exit File_Loop; | |
850 | end case; | |
851 | end loop Digit_Loop; | |
852 | ||
853 | Current := Current_Temp_File_Name; | |
854 | ||
13f39091 AC |
855 | -- We can now release the lock, because we are no longer accessing |
856 | -- Current_Temp_File_Name. | |
30681738 RD |
857 | |
858 | SSL.Unlock_Task.all; | |
859 | ||
860 | exception | |
861 | when others => | |
862 | SSL.Unlock_Task.all; | |
863 | raise; | |
864 | end Locked; | |
865 | ||
866 | -- Attempt to create the file | |
867 | ||
477b99b6 | 868 | if Stdout then |
fdfcc663 | 869 | FD := Create_New_Output_Text_File (Current); |
477b99b6 | 870 | else |
fdfcc663 | 871 | FD := Create_New_File (Current, Binary); |
477b99b6 | 872 | end if; |
30681738 RD |
873 | |
874 | if FD /= Invalid_FD then | |
875 | Name := new String'(Current); | |
876 | exit File_Loop; | |
877 | end if; | |
878 | ||
879 | if not Is_Regular_File (Current) then | |
880 | ||
881 | -- If the file does not already exist and we are unable to create | |
882 | -- it, we give up after Max_Attempts. Otherwise, we try again with | |
883 | -- the next available file name. | |
884 | ||
885 | Attempts := Attempts + 1; | |
886 | ||
887 | if Attempts >= Max_Attempts then | |
888 | FD := Invalid_FD; | |
889 | Name := null; | |
890 | exit File_Loop; | |
891 | end if; | |
892 | end if; | |
893 | end loop File_Loop; | |
477b99b6 | 894 | end Create_Temp_File_Internal; |
30681738 RD |
895 | |
896 | ----------------- | |
897 | -- Delete_File -- | |
898 | ----------------- | |
899 | ||
900 | procedure Delete_File (Name : Address; Success : out Boolean) is | |
901 | R : Integer; | |
30681738 | 902 | begin |
bca17d51 | 903 | R := System.CRTL.unlink (Name); |
30681738 RD |
904 | Success := (R = 0); |
905 | end Delete_File; | |
906 | ||
907 | procedure Delete_File (Name : String; Success : out Boolean) is | |
908 | C_Name : String (1 .. Name'Length + 1); | |
30681738 RD |
909 | begin |
910 | C_Name (1 .. Name'Length) := Name; | |
911 | C_Name (C_Name'Last) := ASCII.NUL; | |
30681738 RD |
912 | Delete_File (C_Name'Address, Success); |
913 | end Delete_File; | |
914 | ||
915 | --------------------- | |
916 | -- File_Time_Stamp -- | |
917 | --------------------- | |
918 | ||
919 | function File_Time_Stamp (FD : File_Descriptor) return OS_Time is | |
8b79ad42 | 920 | function File_Time (FD : File_Descriptor) return OS_Time; |
30681738 RD |
921 | pragma Import (C, File_Time, "__gnat_file_time_fd"); |
922 | begin | |
923 | return File_Time (FD); | |
924 | end File_Time_Stamp; | |
925 | ||
926 | function File_Time_Stamp (Name : C_File_Name) return OS_Time is | |
927 | function File_Time (Name : Address) return OS_Time; | |
928 | pragma Import (C, File_Time, "__gnat_file_time_name"); | |
929 | begin | |
930 | return File_Time (Name); | |
931 | end File_Time_Stamp; | |
932 | ||
933 | function File_Time_Stamp (Name : String) return OS_Time is | |
934 | F_Name : String (1 .. Name'Length + 1); | |
935 | begin | |
936 | F_Name (1 .. Name'Length) := Name; | |
937 | F_Name (F_Name'Last) := ASCII.NUL; | |
938 | return File_Time_Stamp (F_Name'Address); | |
939 | end File_Time_Stamp; | |
940 | ||
941 | --------------------------- | |
942 | -- Get_Debuggable_Suffix -- | |
943 | --------------------------- | |
944 | ||
945 | function Get_Debuggable_Suffix return String_Access is | |
946 | procedure Get_Suffix_Ptr (Length, Ptr : Address); | |
947 | pragma Import (C, Get_Suffix_Ptr, "__gnat_get_debuggable_suffix_ptr"); | |
948 | ||
949 | procedure Strncpy (Astring_Addr, Cstring : Address; N : Integer); | |
950 | pragma Import (C, Strncpy, "strncpy"); | |
951 | ||
952 | Suffix_Ptr : Address; | |
953 | Suffix_Length : Integer; | |
954 | Result : String_Access; | |
955 | ||
956 | begin | |
957 | Get_Suffix_Ptr (Suffix_Length'Address, Suffix_Ptr'Address); | |
30681738 RD |
958 | Result := new String (1 .. Suffix_Length); |
959 | ||
960 | if Suffix_Length > 0 then | |
961 | Strncpy (Result.all'Address, Suffix_Ptr, Suffix_Length); | |
962 | end if; | |
963 | ||
964 | return Result; | |
965 | end Get_Debuggable_Suffix; | |
966 | ||
967 | --------------------------- | |
968 | -- Get_Executable_Suffix -- | |
969 | --------------------------- | |
970 | ||
971 | function Get_Executable_Suffix return String_Access is | |
972 | procedure Get_Suffix_Ptr (Length, Ptr : Address); | |
973 | pragma Import (C, Get_Suffix_Ptr, "__gnat_get_executable_suffix_ptr"); | |
974 | ||
975 | procedure Strncpy (Astring_Addr, Cstring : Address; N : Integer); | |
976 | pragma Import (C, Strncpy, "strncpy"); | |
977 | ||
978 | Suffix_Ptr : Address; | |
979 | Suffix_Length : Integer; | |
980 | Result : String_Access; | |
981 | ||
982 | begin | |
983 | Get_Suffix_Ptr (Suffix_Length'Address, Suffix_Ptr'Address); | |
30681738 RD |
984 | Result := new String (1 .. Suffix_Length); |
985 | ||
986 | if Suffix_Length > 0 then | |
987 | Strncpy (Result.all'Address, Suffix_Ptr, Suffix_Length); | |
988 | end if; | |
989 | ||
990 | return Result; | |
991 | end Get_Executable_Suffix; | |
992 | ||
993 | ----------------------- | |
994 | -- Get_Object_Suffix -- | |
995 | ----------------------- | |
996 | ||
997 | function Get_Object_Suffix return String_Access is | |
998 | procedure Get_Suffix_Ptr (Length, Ptr : Address); | |
999 | pragma Import (C, Get_Suffix_Ptr, "__gnat_get_object_suffix_ptr"); | |
1000 | ||
1001 | procedure Strncpy (Astring_Addr, Cstring : Address; N : Integer); | |
1002 | pragma Import (C, Strncpy, "strncpy"); | |
1003 | ||
1004 | Suffix_Ptr : Address; | |
1005 | Suffix_Length : Integer; | |
1006 | Result : String_Access; | |
1007 | ||
1008 | begin | |
1009 | Get_Suffix_Ptr (Suffix_Length'Address, Suffix_Ptr'Address); | |
30681738 RD |
1010 | Result := new String (1 .. Suffix_Length); |
1011 | ||
1012 | if Suffix_Length > 0 then | |
1013 | Strncpy (Result.all'Address, Suffix_Ptr, Suffix_Length); | |
1014 | end if; | |
1015 | ||
1016 | return Result; | |
1017 | end Get_Object_Suffix; | |
1018 | ||
1019 | ---------------------------------- | |
1020 | -- Get_Target_Debuggable_Suffix -- | |
1021 | ---------------------------------- | |
1022 | ||
1023 | function Get_Target_Debuggable_Suffix return String_Access is | |
1024 | Target_Exec_Ext_Ptr : Address; | |
1025 | pragma Import | |
1026 | (C, Target_Exec_Ext_Ptr, "__gnat_target_debuggable_extension"); | |
1027 | ||
1028 | procedure Strncpy (Astring_Addr, Cstring : Address; N : Integer); | |
1029 | pragma Import (C, Strncpy, "strncpy"); | |
1030 | ||
1031 | function Strlen (Cstring : Address) return Integer; | |
1032 | pragma Import (C, Strlen, "strlen"); | |
1033 | ||
1034 | Suffix_Length : Integer; | |
1035 | Result : String_Access; | |
1036 | ||
1037 | begin | |
1038 | Suffix_Length := Strlen (Target_Exec_Ext_Ptr); | |
30681738 RD |
1039 | Result := new String (1 .. Suffix_Length); |
1040 | ||
1041 | if Suffix_Length > 0 then | |
1042 | Strncpy (Result.all'Address, Target_Exec_Ext_Ptr, Suffix_Length); | |
1043 | end if; | |
1044 | ||
1045 | return Result; | |
1046 | end Get_Target_Debuggable_Suffix; | |
1047 | ||
1048 | ---------------------------------- | |
1049 | -- Get_Target_Executable_Suffix -- | |
1050 | ---------------------------------- | |
1051 | ||
1052 | function Get_Target_Executable_Suffix return String_Access is | |
1053 | Target_Exec_Ext_Ptr : Address; | |
1054 | pragma Import | |
1055 | (C, Target_Exec_Ext_Ptr, "__gnat_target_executable_extension"); | |
1056 | ||
1057 | procedure Strncpy (Astring_Addr, Cstring : Address; N : Integer); | |
1058 | pragma Import (C, Strncpy, "strncpy"); | |
1059 | ||
1060 | function Strlen (Cstring : Address) return Integer; | |
1061 | pragma Import (C, Strlen, "strlen"); | |
1062 | ||
1063 | Suffix_Length : Integer; | |
1064 | Result : String_Access; | |
1065 | ||
1066 | begin | |
1067 | Suffix_Length := Strlen (Target_Exec_Ext_Ptr); | |
30681738 RD |
1068 | Result := new String (1 .. Suffix_Length); |
1069 | ||
1070 | if Suffix_Length > 0 then | |
1071 | Strncpy (Result.all'Address, Target_Exec_Ext_Ptr, Suffix_Length); | |
1072 | end if; | |
1073 | ||
1074 | return Result; | |
1075 | end Get_Target_Executable_Suffix; | |
1076 | ||
1077 | ------------------------------ | |
1078 | -- Get_Target_Object_Suffix -- | |
1079 | ------------------------------ | |
1080 | ||
1081 | function Get_Target_Object_Suffix return String_Access is | |
1082 | Target_Object_Ext_Ptr : Address; | |
1083 | pragma Import | |
1084 | (C, Target_Object_Ext_Ptr, "__gnat_target_object_extension"); | |
1085 | ||
1086 | procedure Strncpy (Astring_Addr, Cstring : Address; N : Integer); | |
1087 | pragma Import (C, Strncpy, "strncpy"); | |
1088 | ||
1089 | function Strlen (Cstring : Address) return Integer; | |
1090 | pragma Import (C, Strlen, "strlen"); | |
1091 | ||
1092 | Suffix_Length : Integer; | |
1093 | Result : String_Access; | |
1094 | ||
1095 | begin | |
1096 | Suffix_Length := Strlen (Target_Object_Ext_Ptr); | |
30681738 RD |
1097 | Result := new String (1 .. Suffix_Length); |
1098 | ||
1099 | if Suffix_Length > 0 then | |
1100 | Strncpy (Result.all'Address, Target_Object_Ext_Ptr, Suffix_Length); | |
1101 | end if; | |
1102 | ||
1103 | return Result; | |
1104 | end Get_Target_Object_Suffix; | |
1105 | ||
1106 | ------------ | |
1107 | -- Getenv -- | |
1108 | ------------ | |
1109 | ||
1110 | function Getenv (Name : String) return String_Access is | |
1111 | procedure Get_Env_Value_Ptr (Name, Length, Ptr : Address); | |
1112 | pragma Import (C, Get_Env_Value_Ptr, "__gnat_getenv"); | |
1113 | ||
1114 | procedure Strncpy (Astring_Addr, Cstring : Address; N : Integer); | |
1115 | pragma Import (C, Strncpy, "strncpy"); | |
1116 | ||
1117 | Env_Value_Ptr : aliased Address; | |
1118 | Env_Value_Length : aliased Integer; | |
1119 | F_Name : aliased String (1 .. Name'Length + 1); | |
1120 | Result : String_Access; | |
1121 | ||
1122 | begin | |
1123 | F_Name (1 .. Name'Length) := Name; | |
1124 | F_Name (F_Name'Last) := ASCII.NUL; | |
1125 | ||
1126 | Get_Env_Value_Ptr | |
1127 | (F_Name'Address, Env_Value_Length'Address, Env_Value_Ptr'Address); | |
1128 | ||
1129 | Result := new String (1 .. Env_Value_Length); | |
1130 | ||
1131 | if Env_Value_Length > 0 then | |
1132 | Strncpy (Result.all'Address, Env_Value_Ptr, Env_Value_Length); | |
1133 | end if; | |
1134 | ||
1135 | return Result; | |
1136 | end Getenv; | |
1137 | ||
1138 | ------------ | |
1139 | -- GM_Day -- | |
1140 | ------------ | |
1141 | ||
1142 | function GM_Day (Date : OS_Time) return Day_Type is | |
67ce0d7e RD |
1143 | D : Day_Type; |
1144 | ||
30681738 RD |
1145 | Y : Year_Type; |
1146 | Mo : Month_Type; | |
30681738 RD |
1147 | H : Hour_Type; |
1148 | Mn : Minute_Type; | |
1149 | S : Second_Type; | |
13f39091 | 1150 | pragma Unreferenced (Y, Mo, H, Mn, S); |
30681738 RD |
1151 | |
1152 | begin | |
1153 | GM_Split (Date, Y, Mo, D, H, Mn, S); | |
1154 | return D; | |
1155 | end GM_Day; | |
1156 | ||
1157 | ------------- | |
1158 | -- GM_Hour -- | |
1159 | ------------- | |
1160 | ||
1161 | function GM_Hour (Date : OS_Time) return Hour_Type is | |
67ce0d7e RD |
1162 | H : Hour_Type; |
1163 | ||
30681738 RD |
1164 | Y : Year_Type; |
1165 | Mo : Month_Type; | |
1166 | D : Day_Type; | |
30681738 RD |
1167 | Mn : Minute_Type; |
1168 | S : Second_Type; | |
13f39091 | 1169 | pragma Unreferenced (Y, Mo, D, Mn, S); |
30681738 RD |
1170 | |
1171 | begin | |
1172 | GM_Split (Date, Y, Mo, D, H, Mn, S); | |
1173 | return H; | |
1174 | end GM_Hour; | |
1175 | ||
1176 | --------------- | |
1177 | -- GM_Minute -- | |
1178 | --------------- | |
1179 | ||
1180 | function GM_Minute (Date : OS_Time) return Minute_Type is | |
67ce0d7e RD |
1181 | Mn : Minute_Type; |
1182 | ||
30681738 RD |
1183 | Y : Year_Type; |
1184 | Mo : Month_Type; | |
1185 | D : Day_Type; | |
1186 | H : Hour_Type; | |
30681738 | 1187 | S : Second_Type; |
13f39091 | 1188 | pragma Unreferenced (Y, Mo, D, H, S); |
30681738 RD |
1189 | |
1190 | begin | |
1191 | GM_Split (Date, Y, Mo, D, H, Mn, S); | |
1192 | return Mn; | |
1193 | end GM_Minute; | |
1194 | ||
1195 | -------------- | |
1196 | -- GM_Month -- | |
1197 | -------------- | |
1198 | ||
1199 | function GM_Month (Date : OS_Time) return Month_Type is | |
30681738 | 1200 | Mo : Month_Type; |
67ce0d7e | 1201 | |
67ce0d7e | 1202 | Y : Year_Type; |
30681738 RD |
1203 | D : Day_Type; |
1204 | H : Hour_Type; | |
1205 | Mn : Minute_Type; | |
1206 | S : Second_Type; | |
13f39091 | 1207 | pragma Unreferenced (Y, D, H, Mn, S); |
30681738 RD |
1208 | |
1209 | begin | |
1210 | GM_Split (Date, Y, Mo, D, H, Mn, S); | |
1211 | return Mo; | |
1212 | end GM_Month; | |
1213 | ||
1214 | --------------- | |
1215 | -- GM_Second -- | |
1216 | --------------- | |
1217 | ||
1218 | function GM_Second (Date : OS_Time) return Second_Type is | |
67ce0d7e RD |
1219 | S : Second_Type; |
1220 | ||
30681738 RD |
1221 | Y : Year_Type; |
1222 | Mo : Month_Type; | |
1223 | D : Day_Type; | |
1224 | H : Hour_Type; | |
1225 | Mn : Minute_Type; | |
13f39091 | 1226 | pragma Unreferenced (Y, Mo, D, H, Mn); |
30681738 RD |
1227 | |
1228 | begin | |
1229 | GM_Split (Date, Y, Mo, D, H, Mn, S); | |
1230 | return S; | |
1231 | end GM_Second; | |
1232 | ||
1233 | -------------- | |
1234 | -- GM_Split -- | |
1235 | -------------- | |
1236 | ||
1237 | procedure GM_Split | |
1238 | (Date : OS_Time; | |
1239 | Year : out Year_Type; | |
1240 | Month : out Month_Type; | |
1241 | Day : out Day_Type; | |
1242 | Hour : out Hour_Type; | |
1243 | Minute : out Minute_Type; | |
1244 | Second : out Second_Type) | |
1245 | is | |
1246 | procedure To_GM_Time | |
1247 | (P_Time_T, P_Year, P_Month, P_Day, P_Hours, P_Mins, P_Secs : Address); | |
1248 | pragma Import (C, To_GM_Time, "__gnat_to_gm_time"); | |
1249 | ||
1250 | T : OS_Time := Date; | |
1251 | Y : Integer; | |
1252 | Mo : Integer; | |
1253 | D : Integer; | |
1254 | H : Integer; | |
1255 | Mn : Integer; | |
1256 | S : Integer; | |
1257 | ||
1258 | begin | |
1259 | -- Use the global lock because To_GM_Time is not thread safe | |
1260 | ||
1261 | Locked_Processing : begin | |
1262 | SSL.Lock_Task.all; | |
1263 | To_GM_Time | |
1264 | (T'Address, Y'Address, Mo'Address, D'Address, | |
1265 | H'Address, Mn'Address, S'Address); | |
1266 | SSL.Unlock_Task.all; | |
1267 | ||
1268 | exception | |
1269 | when others => | |
1270 | SSL.Unlock_Task.all; | |
1271 | raise; | |
1272 | end Locked_Processing; | |
1273 | ||
1274 | Year := Y + 1900; | |
1275 | Month := Mo + 1; | |
1276 | Day := D; | |
1277 | Hour := H; | |
1278 | Minute := Mn; | |
1279 | Second := S; | |
1280 | end GM_Split; | |
1281 | ||
1282 | ------------- | |
1283 | -- GM_Year -- | |
1284 | ------------- | |
1285 | ||
1286 | function GM_Year (Date : OS_Time) return Year_Type is | |
1287 | Y : Year_Type; | |
67ce0d7e | 1288 | |
30681738 RD |
1289 | Mo : Month_Type; |
1290 | D : Day_Type; | |
1291 | H : Hour_Type; | |
1292 | Mn : Minute_Type; | |
1293 | S : Second_Type; | |
13f39091 | 1294 | pragma Unreferenced (Mo, D, H, Mn, S); |
30681738 RD |
1295 | |
1296 | begin | |
1297 | GM_Split (Date, Y, Mo, D, H, Mn, S); | |
1298 | return Y; | |
1299 | end GM_Year; | |
1300 | ||
1301 | ---------------------- | |
1302 | -- Is_Absolute_Path -- | |
1303 | ---------------------- | |
1304 | ||
1305 | function Is_Absolute_Path (Name : String) return Boolean is | |
1306 | function Is_Absolute_Path | |
1307 | (Name : Address; | |
1308 | Length : Integer) return Integer; | |
1309 | pragma Import (C, Is_Absolute_Path, "__gnat_is_absolute_path"); | |
1310 | begin | |
1311 | return Is_Absolute_Path (Name'Address, Name'Length) /= 0; | |
1312 | end Is_Absolute_Path; | |
1313 | ||
1314 | ------------------ | |
1315 | -- Is_Directory -- | |
1316 | ------------------ | |
1317 | ||
1318 | function Is_Directory (Name : C_File_Name) return Boolean is | |
1319 | function Is_Directory (Name : Address) return Integer; | |
1320 | pragma Import (C, Is_Directory, "__gnat_is_directory"); | |
1321 | begin | |
1322 | return Is_Directory (Name) /= 0; | |
1323 | end Is_Directory; | |
1324 | ||
1325 | function Is_Directory (Name : String) return Boolean is | |
1326 | F_Name : String (1 .. Name'Length + 1); | |
1327 | begin | |
1328 | F_Name (1 .. Name'Length) := Name; | |
1329 | F_Name (F_Name'Last) := ASCII.NUL; | |
1330 | return Is_Directory (F_Name'Address); | |
1331 | end Is_Directory; | |
1332 | ||
1333 | ---------------------- | |
1334 | -- Is_Readable_File -- | |
1335 | ---------------------- | |
1336 | ||
1337 | function Is_Readable_File (Name : C_File_Name) return Boolean is | |
1338 | function Is_Readable_File (Name : Address) return Integer; | |
1339 | pragma Import (C, Is_Readable_File, "__gnat_is_readable_file"); | |
1340 | begin | |
1341 | return Is_Readable_File (Name) /= 0; | |
1342 | end Is_Readable_File; | |
1343 | ||
1344 | function Is_Readable_File (Name : String) return Boolean is | |
1345 | F_Name : String (1 .. Name'Length + 1); | |
1346 | begin | |
1347 | F_Name (1 .. Name'Length) := Name; | |
1348 | F_Name (F_Name'Last) := ASCII.NUL; | |
1349 | return Is_Readable_File (F_Name'Address); | |
1350 | end Is_Readable_File; | |
1351 | ||
d559d5c6 AC |
1352 | ------------------------ |
1353 | -- Is_Executable_File -- | |
1354 | ------------------------ | |
1355 | ||
1356 | function Is_Executable_File (Name : C_File_Name) return Boolean is | |
1357 | function Is_Executable_File (Name : Address) return Integer; | |
1358 | pragma Import (C, Is_Executable_File, "__gnat_is_executable_file"); | |
1359 | begin | |
1360 | return Is_Executable_File (Name) /= 0; | |
1361 | end Is_Executable_File; | |
1362 | ||
1363 | function Is_Executable_File (Name : String) return Boolean is | |
1364 | F_Name : String (1 .. Name'Length + 1); | |
1365 | begin | |
1366 | F_Name (1 .. Name'Length) := Name; | |
1367 | F_Name (F_Name'Last) := ASCII.NUL; | |
1368 | return Is_Executable_File (F_Name'Address); | |
1369 | end Is_Executable_File; | |
1370 | ||
30681738 RD |
1371 | --------------------- |
1372 | -- Is_Regular_File -- | |
1373 | --------------------- | |
1374 | ||
1375 | function Is_Regular_File (Name : C_File_Name) return Boolean is | |
1376 | function Is_Regular_File (Name : Address) return Integer; | |
1377 | pragma Import (C, Is_Regular_File, "__gnat_is_regular_file"); | |
1378 | begin | |
1379 | return Is_Regular_File (Name) /= 0; | |
1380 | end Is_Regular_File; | |
1381 | ||
1382 | function Is_Regular_File (Name : String) return Boolean is | |
1383 | F_Name : String (1 .. Name'Length + 1); | |
1384 | begin | |
1385 | F_Name (1 .. Name'Length) := Name; | |
1386 | F_Name (F_Name'Last) := ASCII.NUL; | |
1387 | return Is_Regular_File (F_Name'Address); | |
1388 | end Is_Regular_File; | |
1389 | ||
1390 | ---------------------- | |
1391 | -- Is_Symbolic_Link -- | |
1392 | ---------------------- | |
1393 | ||
1394 | function Is_Symbolic_Link (Name : C_File_Name) return Boolean is | |
1395 | function Is_Symbolic_Link (Name : Address) return Integer; | |
1396 | pragma Import (C, Is_Symbolic_Link, "__gnat_is_symbolic_link"); | |
1397 | begin | |
1398 | return Is_Symbolic_Link (Name) /= 0; | |
1399 | end Is_Symbolic_Link; | |
1400 | ||
1401 | function Is_Symbolic_Link (Name : String) return Boolean is | |
1402 | F_Name : String (1 .. Name'Length + 1); | |
1403 | begin | |
1404 | F_Name (1 .. Name'Length) := Name; | |
1405 | F_Name (F_Name'Last) := ASCII.NUL; | |
1406 | return Is_Symbolic_Link (F_Name'Address); | |
1407 | end Is_Symbolic_Link; | |
1408 | ||
1409 | ---------------------- | |
1410 | -- Is_Writable_File -- | |
1411 | ---------------------- | |
1412 | ||
1413 | function Is_Writable_File (Name : C_File_Name) return Boolean is | |
1414 | function Is_Writable_File (Name : Address) return Integer; | |
1415 | pragma Import (C, Is_Writable_File, "__gnat_is_writable_file"); | |
1416 | begin | |
1417 | return Is_Writable_File (Name) /= 0; | |
1418 | end Is_Writable_File; | |
1419 | ||
1420 | function Is_Writable_File (Name : String) return Boolean is | |
1421 | F_Name : String (1 .. Name'Length + 1); | |
1422 | begin | |
1423 | F_Name (1 .. Name'Length) := Name; | |
1424 | F_Name (F_Name'Last) := ASCII.NUL; | |
1425 | return Is_Writable_File (F_Name'Address); | |
1426 | end Is_Writable_File; | |
1427 | ||
1428 | ------------------------- | |
1429 | -- Locate_Exec_On_Path -- | |
1430 | ------------------------- | |
1431 | ||
1432 | function Locate_Exec_On_Path | |
1433 | (Exec_Name : String) return String_Access | |
1434 | is | |
1435 | function Locate_Exec_On_Path (C_Exec_Name : Address) return Address; | |
1436 | pragma Import (C, Locate_Exec_On_Path, "__gnat_locate_exec_on_path"); | |
1437 | ||
1438 | procedure Free (Ptr : System.Address); | |
1439 | pragma Import (C, Free, "free"); | |
1440 | ||
1441 | C_Exec_Name : String (1 .. Exec_Name'Length + 1); | |
1442 | Path_Addr : Address; | |
1443 | Path_Len : Integer; | |
1444 | Result : String_Access; | |
1445 | ||
1446 | begin | |
1447 | C_Exec_Name (1 .. Exec_Name'Length) := Exec_Name; | |
1448 | C_Exec_Name (C_Exec_Name'Last) := ASCII.NUL; | |
1449 | ||
1450 | Path_Addr := Locate_Exec_On_Path (C_Exec_Name'Address); | |
1451 | Path_Len := C_String_Length (Path_Addr); | |
1452 | ||
1453 | if Path_Len = 0 then | |
1454 | return null; | |
1455 | ||
1456 | else | |
1457 | Result := To_Path_String_Access (Path_Addr, Path_Len); | |
1458 | Free (Path_Addr); | |
1459 | ||
1460 | -- Always return an absolute path name | |
1461 | ||
1462 | if not Is_Absolute_Path (Result.all) then | |
1463 | declare | |
1464 | Absolute_Path : constant String := | |
2ae395d6 | 1465 | Normalize_Pathname (Result.all, Resolve_Links => False); |
30681738 RD |
1466 | begin |
1467 | Free (Result); | |
1468 | Result := new String'(Absolute_Path); | |
1469 | end; | |
1470 | end if; | |
1471 | ||
1472 | return Result; | |
1473 | end if; | |
1474 | end Locate_Exec_On_Path; | |
1475 | ||
1476 | ------------------------- | |
1477 | -- Locate_Regular_File -- | |
1478 | ------------------------- | |
1479 | ||
1480 | function Locate_Regular_File | |
1481 | (File_Name : C_File_Name; | |
1482 | Path : C_File_Name) return String_Access | |
1483 | is | |
1484 | function Locate_Regular_File | |
1485 | (C_File_Name, Path_Val : Address) return Address; | |
1486 | pragma Import (C, Locate_Regular_File, "__gnat_locate_regular_file"); | |
1487 | ||
1488 | procedure Free (Ptr : System.Address); | |
1489 | pragma Import (C, Free, "free"); | |
1490 | ||
1491 | Path_Addr : Address; | |
1492 | Path_Len : Integer; | |
1493 | Result : String_Access; | |
1494 | ||
1495 | begin | |
1496 | Path_Addr := Locate_Regular_File (File_Name, Path); | |
1497 | Path_Len := C_String_Length (Path_Addr); | |
1498 | ||
1499 | if Path_Len = 0 then | |
1500 | return null; | |
8b79ad42 | 1501 | |
30681738 RD |
1502 | else |
1503 | Result := To_Path_String_Access (Path_Addr, Path_Len); | |
1504 | Free (Path_Addr); | |
1505 | return Result; | |
1506 | end if; | |
1507 | end Locate_Regular_File; | |
1508 | ||
1509 | function Locate_Regular_File | |
1510 | (File_Name : String; | |
1511 | Path : String) return String_Access | |
1512 | is | |
1513 | C_File_Name : String (1 .. File_Name'Length + 1); | |
1514 | C_Path : String (1 .. Path'Length + 1); | |
1515 | Result : String_Access; | |
1516 | ||
1517 | begin | |
1518 | C_File_Name (1 .. File_Name'Length) := File_Name; | |
1519 | C_File_Name (C_File_Name'Last) := ASCII.NUL; | |
1520 | ||
1521 | C_Path (1 .. Path'Length) := Path; | |
1522 | C_Path (C_Path'Last) := ASCII.NUL; | |
1523 | ||
1524 | Result := Locate_Regular_File (C_File_Name'Address, C_Path'Address); | |
1525 | ||
1526 | -- Always return an absolute path name | |
1527 | ||
1528 | if Result /= null and then not Is_Absolute_Path (Result.all) then | |
1529 | declare | |
1530 | Absolute_Path : constant String := Normalize_Pathname (Result.all); | |
1531 | begin | |
1532 | Free (Result); | |
1533 | Result := new String'(Absolute_Path); | |
1534 | end; | |
1535 | end if; | |
1536 | ||
1537 | return Result; | |
1538 | end Locate_Regular_File; | |
1539 | ||
1540 | ------------------------ | |
1541 | -- Non_Blocking_Spawn -- | |
1542 | ------------------------ | |
1543 | ||
1544 | function Non_Blocking_Spawn | |
1545 | (Program_Name : String; | |
1546 | Args : Argument_List) return Process_Id | |
1547 | is | |
30681738 | 1548 | Pid : Process_Id; |
67ce0d7e RD |
1549 | Junk : Integer; |
1550 | pragma Warnings (Off, Junk); | |
30681738 RD |
1551 | begin |
1552 | Spawn_Internal (Program_Name, Args, Junk, Pid, Blocking => False); | |
1553 | return Pid; | |
1554 | end Non_Blocking_Spawn; | |
1555 | ||
1556 | function Non_Blocking_Spawn | |
1557 | (Program_Name : String; | |
1558 | Args : Argument_List; | |
1559 | Output_File_Descriptor : File_Descriptor; | |
1560 | Err_To_Out : Boolean := True) return Process_Id | |
1561 | is | |
1562 | Saved_Output : File_Descriptor; | |
1563 | Saved_Error : File_Descriptor := Invalid_FD; -- prevent warning | |
1564 | Pid : Process_Id; | |
1565 | ||
1566 | begin | |
1567 | if Output_File_Descriptor = Invalid_FD then | |
1568 | return Invalid_Pid; | |
1569 | end if; | |
1570 | ||
1571 | -- Set standard output and, if specified, error to the temporary file | |
1572 | ||
1573 | Saved_Output := Dup (Standout); | |
1574 | Dup2 (Output_File_Descriptor, Standout); | |
1575 | ||
1576 | if Err_To_Out then | |
1577 | Saved_Error := Dup (Standerr); | |
1578 | Dup2 (Output_File_Descriptor, Standerr); | |
1579 | end if; | |
1580 | ||
1581 | -- Spawn the program | |
1582 | ||
1583 | Pid := Non_Blocking_Spawn (Program_Name, Args); | |
1584 | ||
1585 | -- Restore the standard output and error | |
1586 | ||
1587 | Dup2 (Saved_Output, Standout); | |
1588 | ||
1589 | if Err_To_Out then | |
1590 | Dup2 (Saved_Error, Standerr); | |
1591 | end if; | |
1592 | ||
1593 | -- And close the saved standard output and error file descriptors | |
1594 | ||
1595 | Close (Saved_Output); | |
1596 | ||
1597 | if Err_To_Out then | |
1598 | Close (Saved_Error); | |
1599 | end if; | |
1600 | ||
1601 | return Pid; | |
1602 | end Non_Blocking_Spawn; | |
1603 | ||
1604 | function Non_Blocking_Spawn | |
1605 | (Program_Name : String; | |
1606 | Args : Argument_List; | |
1607 | Output_File : String; | |
1608 | Err_To_Out : Boolean := True) return Process_Id | |
1609 | is | |
1610 | Output_File_Descriptor : constant File_Descriptor := | |
1611 | Create_Output_Text_File (Output_File); | |
1612 | Result : Process_Id; | |
1613 | ||
1614 | begin | |
1615 | -- Do not attempt to spawn if the output file could not be created | |
1616 | ||
1617 | if Output_File_Descriptor = Invalid_FD then | |
1618 | return Invalid_Pid; | |
1619 | ||
1620 | else | |
1621 | Result := Non_Blocking_Spawn | |
1622 | (Program_Name, Args, Output_File_Descriptor, Err_To_Out); | |
1623 | ||
1624 | -- Close the file just created for the output, as the file descriptor | |
1625 | -- cannot be used anywhere, being a local value. It is safe to do | |
1626 | -- that, as the file descriptor has been duplicated to form | |
1627 | -- standard output and error of the spawned process. | |
1628 | ||
1629 | Close (Output_File_Descriptor); | |
1630 | ||
1631 | return Result; | |
1632 | end if; | |
1633 | end Non_Blocking_Spawn; | |
1634 | ||
1635 | ------------------------- | |
1636 | -- Normalize_Arguments -- | |
1637 | ------------------------- | |
1638 | ||
1639 | procedure Normalize_Arguments (Args : in out Argument_List) is | |
1640 | ||
1641 | procedure Quote_Argument (Arg : in out String_Access); | |
c91dbd18 | 1642 | -- Add quote around argument if it contains spaces (or HT characters) |
30681738 RD |
1643 | |
1644 | C_Argument_Needs_Quote : Integer; | |
1645 | pragma Import (C, C_Argument_Needs_Quote, "__gnat_argument_needs_quote"); | |
1646 | Argument_Needs_Quote : constant Boolean := C_Argument_Needs_Quote /= 0; | |
1647 | ||
1648 | -------------------- | |
1649 | -- Quote_Argument -- | |
1650 | -------------------- | |
1651 | ||
1652 | procedure Quote_Argument (Arg : in out String_Access) is | |
1653 | Res : String (1 .. Arg'Length * 2); | |
1654 | J : Positive := 1; | |
1655 | Quote_Needed : Boolean := False; | |
1656 | ||
1657 | begin | |
1658 | if Arg (Arg'First) /= '"' or else Arg (Arg'Last) /= '"' then | |
1659 | ||
1660 | -- Starting quote | |
1661 | ||
1662 | Res (J) := '"'; | |
1663 | ||
1664 | for K in Arg'Range loop | |
1665 | ||
1666 | J := J + 1; | |
1667 | ||
1668 | if Arg (K) = '"' then | |
1669 | Res (J) := '\'; | |
1670 | J := J + 1; | |
1671 | Res (J) := '"'; | |
1672 | Quote_Needed := True; | |
1673 | ||
ba08ba84 | 1674 | elsif Arg (K) = ' ' or else Arg (K) = ASCII.HT then |
30681738 RD |
1675 | Res (J) := Arg (K); |
1676 | Quote_Needed := True; | |
1677 | ||
1678 | else | |
1679 | Res (J) := Arg (K); | |
1680 | end if; | |
30681738 RD |
1681 | end loop; |
1682 | ||
1683 | if Quote_Needed then | |
1684 | ||
260359e3 | 1685 | -- Case of null terminated string |
30681738 | 1686 | |
43c6e0cb | 1687 | if Res (J) = ASCII.NUL then |
75685ef7 PO |
1688 | |
1689 | -- If the string ends with \, double it | |
1690 | ||
1691 | if Res (J - 1) = '\' then | |
1692 | Res (J) := '\'; | |
1693 | J := J + 1; | |
1694 | end if; | |
1695 | ||
260359e3 | 1696 | -- Put a quote just before the null at the end |
75685ef7 | 1697 | |
30681738 RD |
1698 | Res (J) := '"'; |
1699 | J := J + 1; | |
43c6e0cb | 1700 | Res (J) := ASCII.NUL; |
30681738 RD |
1701 | |
1702 | -- If argument is terminated by '\', then double it. Otherwise | |
1703 | -- the ending quote will be taken as-is. This is quite strange | |
a90bd866 | 1704 | -- spawn behavior from Windows, but this is what we see. |
30681738 RD |
1705 | |
1706 | else | |
1707 | if Res (J) = '\' then | |
1708 | J := J + 1; | |
1709 | Res (J) := '\'; | |
1710 | end if; | |
1711 | ||
1712 | -- Ending quote | |
1713 | ||
1714 | J := J + 1; | |
1715 | Res (J) := '"'; | |
1716 | end if; | |
1717 | ||
1718 | declare | |
1719 | Old : String_Access := Arg; | |
1720 | ||
1721 | begin | |
1722 | Arg := new String'(Res (1 .. J)); | |
1723 | Free (Old); | |
1724 | end; | |
1725 | end if; | |
1726 | ||
1727 | end if; | |
1728 | end Quote_Argument; | |
1729 | ||
1730 | -- Start of processing for Normalize_Arguments | |
1731 | ||
1732 | begin | |
1733 | if Argument_Needs_Quote then | |
1734 | for K in Args'Range loop | |
1735 | if Args (K) /= null and then Args (K)'Length /= 0 then | |
1736 | Quote_Argument (Args (K)); | |
1737 | end if; | |
1738 | end loop; | |
1739 | end if; | |
1740 | end Normalize_Arguments; | |
1741 | ||
1742 | ------------------------ | |
1743 | -- Normalize_Pathname -- | |
1744 | ------------------------ | |
1745 | ||
1746 | function Normalize_Pathname | |
1747 | (Name : String; | |
1748 | Directory : String := ""; | |
1749 | Resolve_Links : Boolean := True; | |
1750 | Case_Sensitive : Boolean := True) return String | |
1751 | is | |
1752 | Max_Path : Integer; | |
1753 | pragma Import (C, Max_Path, "__gnat_max_path_len"); | |
1754 | -- Maximum length of a path name | |
1755 | ||
1756 | procedure Get_Current_Dir | |
1757 | (Dir : System.Address; | |
1758 | Length : System.Address); | |
1759 | pragma Import (C, Get_Current_Dir, "__gnat_get_current_dir"); | |
1760 | ||
1761 | Path_Buffer : String (1 .. Max_Path + Max_Path + 2); | |
1762 | End_Path : Natural := 0; | |
1763 | Link_Buffer : String (1 .. Max_Path + 2); | |
1764 | Status : Integer; | |
1765 | Last : Positive; | |
1766 | Start : Natural; | |
1767 | Finish : Positive; | |
1768 | ||
1769 | Max_Iterations : constant := 500; | |
1770 | ||
1771 | function Get_File_Names_Case_Sensitive return Integer; | |
1772 | pragma Import | |
1773 | (C, Get_File_Names_Case_Sensitive, | |
1774 | "__gnat_get_file_names_case_sensitive"); | |
1775 | ||
1776 | Fold_To_Lower_Case : constant Boolean := | |
1777 | not Case_Sensitive | |
1778 | and then Get_File_Names_Case_Sensitive = 0; | |
1779 | ||
1780 | function Readlink | |
1781 | (Path : System.Address; | |
1782 | Buf : System.Address; | |
1783 | Bufsiz : Integer) return Integer; | |
1784 | pragma Import (C, Readlink, "__gnat_readlink"); | |
1785 | ||
1786 | function To_Canonical_File_Spec | |
1787 | (Host_File : System.Address) return System.Address; | |
1788 | pragma Import | |
1789 | (C, To_Canonical_File_Spec, "__gnat_to_canonical_file_spec"); | |
1790 | ||
1791 | The_Name : String (1 .. Name'Length + 1); | |
1792 | Canonical_File_Addr : System.Address; | |
1793 | Canonical_File_Len : Integer; | |
1794 | ||
30681738 RD |
1795 | function Strlen (S : System.Address) return Integer; |
1796 | pragma Import (C, Strlen, "strlen"); | |
1797 | ||
1798 | function Final_Value (S : String) return String; | |
33c423c8 AC |
1799 | -- Make final adjustment to the returned string. This function strips |
1800 | -- trailing directory separators, and folds returned string to lower | |
1801 | -- case if required. | |
30681738 RD |
1802 | |
1803 | function Get_Directory (Dir : String) return String; | |
1804 | -- If Dir is not empty, return it, adding a directory separator | |
1805 | -- if not already present, otherwise return current working directory | |
1806 | -- with terminating directory separator. | |
1807 | ||
1808 | ----------------- | |
1809 | -- Final_Value -- | |
1810 | ----------------- | |
1811 | ||
1812 | function Final_Value (S : String) return String is | |
1813 | S1 : String := S; | |
1814 | -- We may need to fold S to lower case, so we need a variable | |
1815 | ||
1816 | Last : Natural; | |
1817 | ||
1818 | begin | |
33c423c8 AC |
1819 | if Fold_To_Lower_Case then |
1820 | System.Case_Util.To_Lower (S1); | |
1821 | end if; | |
30681738 | 1822 | |
33c423c8 | 1823 | -- Remove trailing directory separator, if any |
30681738 | 1824 | |
33c423c8 | 1825 | Last := S1'Last; |
30681738 | 1826 | |
33c423c8 AC |
1827 | if Last > 1 |
1828 | and then (S1 (Last) = '/' | |
1829 | or else | |
1830 | S1 (Last) = Directory_Separator) | |
1831 | then | |
1832 | -- Special case for Windows: C:\ | |
30681738 | 1833 | |
33c423c8 AC |
1834 | if Last = 3 |
1835 | and then S1 (1) /= Directory_Separator | |
1836 | and then S1 (2) = ':' | |
30681738 | 1837 | then |
33c423c8 | 1838 | null; |
30681738 | 1839 | |
33c423c8 AC |
1840 | else |
1841 | Last := Last - 1; | |
30681738 | 1842 | end if; |
30681738 | 1843 | end if; |
33c423c8 AC |
1844 | |
1845 | return S1 (1 .. Last); | |
30681738 RD |
1846 | end Final_Value; |
1847 | ||
1848 | ------------------- | |
1849 | -- Get_Directory -- | |
1850 | ------------------- | |
1851 | ||
1852 | function Get_Directory (Dir : String) return String is | |
5b900a45 AC |
1853 | Result : String (1 .. Dir'Length + 1); |
1854 | Length : constant Natural := Dir'Length; | |
1855 | ||
30681738 RD |
1856 | begin |
1857 | -- Directory given, add directory separator if needed | |
1858 | ||
5b900a45 AC |
1859 | if Length > 0 then |
1860 | Result (1 .. Length) := Dir; | |
1861 | ||
1862 | -- On Windows, change all '/' to '\' | |
1863 | ||
1864 | if On_Windows then | |
1865 | for J in 1 .. Length loop | |
1866 | if Result (J) = '/' then | |
1867 | Result (J) := Directory_Separator; | |
1868 | end if; | |
1869 | end loop; | |
1870 | end if; | |
1871 | ||
1872 | -- Add directory separator, if needed | |
1873 | ||
1874 | if Result (Length) = Directory_Separator then | |
1875 | return Result (1 .. Length); | |
30681738 | 1876 | else |
5b900a45 AC |
1877 | Result (Result'Length) := Directory_Separator; |
1878 | return Result; | |
30681738 RD |
1879 | end if; |
1880 | ||
1881 | -- Directory name not given, get current directory | |
1882 | ||
1883 | else | |
1884 | declare | |
1885 | Buffer : String (1 .. Max_Path + 2); | |
1886 | Path_Len : Natural := Max_Path; | |
1887 | ||
1888 | begin | |
1889 | Get_Current_Dir (Buffer'Address, Path_Len'Address); | |
1890 | ||
1891 | if Buffer (Path_Len) /= Directory_Separator then | |
1892 | Path_Len := Path_Len + 1; | |
1893 | Buffer (Path_Len) := Directory_Separator; | |
1894 | end if; | |
1895 | ||
1896 | -- By default, the drive letter on Windows is in upper case | |
1897 | ||
e34ca162 AC |
1898 | if On_Windows |
1899 | and then Path_Len >= 2 | |
ee9aa7b6 | 1900 | and then Buffer (2) = ':' |
30681738 RD |
1901 | then |
1902 | System.Case_Util.To_Upper (Buffer (1 .. 1)); | |
1903 | end if; | |
1904 | ||
1905 | return Buffer (1 .. Path_Len); | |
1906 | end; | |
1907 | end if; | |
1908 | end Get_Directory; | |
1909 | ||
30681738 RD |
1910 | -- Start of processing for Normalize_Pathname |
1911 | ||
1912 | begin | |
cca7f107 AC |
1913 | -- Special case, return null if name is null, or if it is bigger than |
1914 | -- the biggest name allowed. | |
30681738 | 1915 | |
cca7f107 | 1916 | if Name'Length = 0 or else Name'Length > Max_Path then |
30681738 RD |
1917 | return ""; |
1918 | end if; | |
1919 | ||
1920 | -- First, convert VMS file spec to Unix file spec. | |
1921 | -- If Name is not in VMS syntax, then this is equivalent | |
276e95ca | 1922 | -- to put Name at the beginning of Path_Buffer. |
30681738 RD |
1923 | |
1924 | VMS_Conversion : begin | |
1925 | The_Name (1 .. Name'Length) := Name; | |
1926 | The_Name (The_Name'Last) := ASCII.NUL; | |
1927 | ||
1928 | Canonical_File_Addr := To_Canonical_File_Spec (The_Name'Address); | |
1929 | Canonical_File_Len := Strlen (Canonical_File_Addr); | |
1930 | ||
1931 | -- If VMS syntax conversion has failed, return an empty string | |
1932 | -- to indicate the failure. | |
1933 | ||
1934 | if Canonical_File_Len = 0 then | |
1935 | return ""; | |
1936 | end if; | |
1937 | ||
1938 | declare | |
1939 | subtype Path_String is String (1 .. Canonical_File_Len); | |
1940 | type Path_String_Access is access Path_String; | |
1941 | ||
1942 | function Address_To_Access is new | |
1943 | Ada.Unchecked_Conversion (Source => Address, | |
1944 | Target => Path_String_Access); | |
1945 | ||
1946 | Path_Access : constant Path_String_Access := | |
1947 | Address_To_Access (Canonical_File_Addr); | |
1948 | ||
1949 | begin | |
1950 | Path_Buffer (1 .. Canonical_File_Len) := Path_Access.all; | |
1951 | End_Path := Canonical_File_Len; | |
1952 | Last := 1; | |
1953 | end; | |
1954 | end VMS_Conversion; | |
1955 | ||
1956 | -- Replace all '/' by Directory Separators (this is for Windows) | |
1957 | ||
1958 | if Directory_Separator /= '/' then | |
1959 | for Index in 1 .. End_Path loop | |
1960 | if Path_Buffer (Index) = '/' then | |
1961 | Path_Buffer (Index) := Directory_Separator; | |
1962 | end if; | |
1963 | end loop; | |
1964 | end if; | |
1965 | ||
1966 | -- Resolve directory names for Windows (formerly also VMS) | |
1967 | ||
1968 | -- On VMS, if we have a Unix path such as /temp/..., and TEMP is a | |
1969 | -- logical name, we must not try to resolve this logical name, because | |
1970 | -- it may have multiple equivalences and if resolved we will only | |
1971 | -- get the first one. | |
1972 | ||
ee9aa7b6 | 1973 | if On_Windows then |
30681738 | 1974 | |
ee9aa7b6 AC |
1975 | -- On Windows, if we have an absolute path starting with a directory |
1976 | -- separator, we need to have the drive letter appended in front. | |
30681738 | 1977 | |
ee9aa7b6 AC |
1978 | -- On Windows, Get_Current_Dir will return a suitable directory name |
1979 | -- (path starting with a drive letter on Windows). So we take this | |
1980 | -- drive letter and prepend it to the current path. | |
30681738 | 1981 | |
ee9aa7b6 AC |
1982 | if Path_Buffer (1) = Directory_Separator |
1983 | and then Path_Buffer (2) /= Directory_Separator | |
1984 | then | |
1985 | declare | |
1986 | Cur_Dir : constant String := Get_Directory (""); | |
1987 | -- Get the current directory to get the drive letter | |
1988 | ||
1989 | begin | |
1990 | if Cur_Dir'Length > 2 | |
1991 | and then Cur_Dir (Cur_Dir'First + 1) = ':' | |
1992 | then | |
1993 | Path_Buffer (3 .. End_Path + 2) := | |
1994 | Path_Buffer (1 .. End_Path); | |
1995 | Path_Buffer (1 .. 2) := | |
1996 | Cur_Dir (Cur_Dir'First .. Cur_Dir'First + 1); | |
1997 | End_Path := End_Path + 2; | |
1998 | end if; | |
1999 | end; | |
2000 | ||
2001 | -- We have a drive letter, ensure it is upper-case | |
2002 | ||
2003 | elsif Path_Buffer (1) in 'a' .. 'z' | |
2004 | and then Path_Buffer (2) = ':' | |
2005 | then | |
2006 | System.Case_Util.To_Upper (Path_Buffer (1 .. 1)); | |
2007 | end if; | |
30681738 RD |
2008 | end if; |
2009 | ||
d1b4f87d AC |
2010 | -- On Windows, remove all double-quotes that are possibly part of the |
2011 | -- path but can cause problems with other methods. | |
2012 | ||
2013 | if On_Windows then | |
2014 | declare | |
f7fd2ec3 RD |
2015 | Index : Natural; |
2016 | ||
d1b4f87d | 2017 | begin |
f7fd2ec3 | 2018 | Index := Path_Buffer'First; |
d1b4f87d AC |
2019 | for Current in Path_Buffer'First .. End_Path loop |
2020 | if Path_Buffer (Current) /= '"' then | |
2021 | Path_Buffer (Index) := Path_Buffer (Current); | |
2022 | Index := Index + 1; | |
2023 | end if; | |
2024 | end loop; | |
2025 | ||
2026 | End_Path := Index - 1; | |
2027 | end; | |
2028 | end if; | |
2029 | ||
30681738 RD |
2030 | -- Start the conversions |
2031 | ||
2032 | -- If this is not finished after Max_Iterations, give up and return an | |
2033 | -- empty string. | |
2034 | ||
2035 | for J in 1 .. Max_Iterations loop | |
2036 | ||
2037 | -- If we don't have an absolute pathname, prepend the directory | |
2038 | -- Reference_Dir. | |
2039 | ||
2040 | if Last = 1 | |
2041 | and then not Is_Absolute_Path (Path_Buffer (1 .. End_Path)) | |
2042 | then | |
aee21c6f EB |
2043 | declare |
2044 | Reference_Dir : constant String := Get_Directory (Directory); | |
2045 | Ref_Dir_Len : constant Natural := Reference_Dir'Length; | |
2046 | -- Current directory name specified and its length | |
2047 | ||
2048 | begin | |
2049 | Path_Buffer (Ref_Dir_Len + 1 .. Ref_Dir_Len + End_Path) := | |
30681738 | 2050 | Path_Buffer (1 .. End_Path); |
aee21c6f EB |
2051 | End_Path := Ref_Dir_Len + End_Path; |
2052 | Path_Buffer (1 .. Ref_Dir_Len) := Reference_Dir; | |
2053 | Last := Ref_Dir_Len; | |
2054 | end; | |
30681738 RD |
2055 | end if; |
2056 | ||
30681738 RD |
2057 | Start := Last + 1; |
2058 | Finish := Last; | |
2059 | ||
2060 | -- Ensure that Windows network drives are kept, e.g: \\server\drive-c | |
2061 | ||
2062 | if Start = 2 | |
2063 | and then Directory_Separator = '\' | |
2064 | and then Path_Buffer (1 .. 2) = "\\" | |
2065 | then | |
2066 | Start := 3; | |
2067 | end if; | |
2068 | ||
2069 | -- If we have traversed the full pathname, return it | |
2070 | ||
2071 | if Start > End_Path then | |
2072 | return Final_Value (Path_Buffer (1 .. End_Path)); | |
2073 | end if; | |
2074 | ||
2075 | -- Remove duplicate directory separators | |
2076 | ||
2077 | while Path_Buffer (Start) = Directory_Separator loop | |
2078 | if Start = End_Path then | |
2079 | return Final_Value (Path_Buffer (1 .. End_Path - 1)); | |
2080 | ||
2081 | else | |
2082 | Path_Buffer (Start .. End_Path - 1) := | |
2083 | Path_Buffer (Start + 1 .. End_Path); | |
2084 | End_Path := End_Path - 1; | |
2085 | end if; | |
2086 | end loop; | |
2087 | ||
2088 | -- Find the end of the current field: last character or the one | |
2089 | -- preceding the next directory separator. | |
2090 | ||
2091 | while Finish < End_Path | |
2092 | and then Path_Buffer (Finish + 1) /= Directory_Separator | |
2093 | loop | |
2094 | Finish := Finish + 1; | |
2095 | end loop; | |
2096 | ||
2097 | -- Remove "." field | |
2098 | ||
2099 | if Start = Finish and then Path_Buffer (Start) = '.' then | |
2100 | if Start = End_Path then | |
2101 | if Last = 1 then | |
2102 | return (1 => Directory_Separator); | |
2103 | else | |
2104 | ||
2105 | if Fold_To_Lower_Case then | |
2106 | System.Case_Util.To_Lower (Path_Buffer (1 .. Last - 1)); | |
2107 | end if; | |
2108 | ||
2109 | return Path_Buffer (1 .. Last - 1); | |
2110 | ||
2111 | end if; | |
2112 | ||
2113 | else | |
2114 | Path_Buffer (Last + 1 .. End_Path - 2) := | |
2115 | Path_Buffer (Last + 3 .. End_Path); | |
2116 | End_Path := End_Path - 2; | |
2117 | end if; | |
2118 | ||
2119 | -- Remove ".." fields | |
2120 | ||
2121 | elsif Finish = Start + 1 | |
2122 | and then Path_Buffer (Start .. Finish) = ".." | |
2123 | then | |
2124 | Start := Last; | |
2125 | loop | |
2126 | Start := Start - 1; | |
75685ef7 PO |
2127 | exit when Start < 1 |
2128 | or else Path_Buffer (Start) = Directory_Separator; | |
30681738 RD |
2129 | end loop; |
2130 | ||
2131 | if Start <= 1 then | |
2132 | if Finish = End_Path then | |
2133 | return (1 => Directory_Separator); | |
2134 | ||
2135 | else | |
2136 | Path_Buffer (1 .. End_Path - Finish) := | |
2137 | Path_Buffer (Finish + 1 .. End_Path); | |
2138 | End_Path := End_Path - Finish; | |
2139 | Last := 1; | |
2140 | end if; | |
2141 | ||
2142 | else | |
2143 | if Finish = End_Path then | |
2144 | return Final_Value (Path_Buffer (1 .. Start - 1)); | |
2145 | ||
2146 | else | |
2147 | Path_Buffer (Start + 1 .. Start + End_Path - Finish - 1) := | |
2148 | Path_Buffer (Finish + 2 .. End_Path); | |
2149 | End_Path := Start + End_Path - Finish - 1; | |
2150 | Last := Start; | |
2151 | end if; | |
2152 | end if; | |
2153 | ||
2154 | -- Check if current field is a symbolic link | |
2155 | ||
2156 | elsif Resolve_Links then | |
2157 | declare | |
2158 | Saved : constant Character := Path_Buffer (Finish + 1); | |
2159 | ||
2160 | begin | |
2161 | Path_Buffer (Finish + 1) := ASCII.NUL; | |
2162 | Status := Readlink (Path_Buffer'Address, | |
2163 | Link_Buffer'Address, | |
2164 | Link_Buffer'Length); | |
2165 | Path_Buffer (Finish + 1) := Saved; | |
2166 | end; | |
2167 | ||
2168 | -- Not a symbolic link, move to the next field, if any | |
2169 | ||
2170 | if Status <= 0 then | |
2171 | Last := Finish + 1; | |
2172 | ||
2173 | -- Replace symbolic link with its value | |
2174 | ||
2175 | else | |
2176 | if Is_Absolute_Path (Link_Buffer (1 .. Status)) then | |
2177 | Path_Buffer (Status + 1 .. End_Path - (Finish - Status)) := | |
2178 | Path_Buffer (Finish + 1 .. End_Path); | |
2179 | End_Path := End_Path - (Finish - Status); | |
2180 | Path_Buffer (1 .. Status) := Link_Buffer (1 .. Status); | |
2181 | Last := 1; | |
2182 | ||
2183 | else | |
2184 | Path_Buffer | |
2185 | (Last + Status + 1 .. End_Path - Finish + Last + Status) := | |
2186 | Path_Buffer (Finish + 1 .. End_Path); | |
2187 | End_Path := End_Path - Finish + Last + Status; | |
2188 | Path_Buffer (Last + 1 .. Last + Status) := | |
2189 | Link_Buffer (1 .. Status); | |
2190 | end if; | |
2191 | end if; | |
2192 | ||
2193 | else | |
2194 | Last := Finish + 1; | |
2195 | end if; | |
2196 | end loop; | |
2197 | ||
2198 | -- Too many iterations: give up | |
2199 | ||
2200 | -- This can happen when there is a circularity in the symbolic links: A | |
2201 | -- is a symbolic link for B, which itself is a symbolic link, and the | |
2202 | -- target of B or of another symbolic link target of B is A. In this | |
2203 | -- case, we return an empty string to indicate failure to resolve. | |
2204 | ||
2205 | return ""; | |
2206 | end Normalize_Pathname; | |
2207 | ||
2208 | --------------- | |
2209 | -- Open_Read -- | |
2210 | --------------- | |
2211 | ||
2212 | function Open_Read | |
2213 | (Name : C_File_Name; | |
2214 | Fmode : Mode) return File_Descriptor | |
2215 | is | |
2216 | function C_Open_Read | |
2217 | (Name : C_File_Name; | |
2218 | Fmode : Mode) return File_Descriptor; | |
2219 | pragma Import (C, C_Open_Read, "__gnat_open_read"); | |
2220 | begin | |
2221 | return C_Open_Read (Name, Fmode); | |
2222 | end Open_Read; | |
2223 | ||
2224 | function Open_Read | |
2225 | (Name : String; | |
2226 | Fmode : Mode) return File_Descriptor | |
2227 | is | |
2228 | C_Name : String (1 .. Name'Length + 1); | |
2229 | begin | |
2230 | C_Name (1 .. Name'Length) := Name; | |
2231 | C_Name (C_Name'Last) := ASCII.NUL; | |
2232 | return Open_Read (C_Name (C_Name'First)'Address, Fmode); | |
2233 | end Open_Read; | |
2234 | ||
2235 | --------------------- | |
2236 | -- Open_Read_Write -- | |
2237 | --------------------- | |
2238 | ||
2239 | function Open_Read_Write | |
2240 | (Name : C_File_Name; | |
2241 | Fmode : Mode) return File_Descriptor | |
2242 | is | |
2243 | function C_Open_Read_Write | |
2244 | (Name : C_File_Name; | |
2245 | Fmode : Mode) return File_Descriptor; | |
2246 | pragma Import (C, C_Open_Read_Write, "__gnat_open_rw"); | |
2247 | begin | |
2248 | return C_Open_Read_Write (Name, Fmode); | |
2249 | end Open_Read_Write; | |
2250 | ||
2251 | function Open_Read_Write | |
2252 | (Name : String; | |
2253 | Fmode : Mode) return File_Descriptor | |
2254 | is | |
2255 | C_Name : String (1 .. Name'Length + 1); | |
2256 | begin | |
2257 | C_Name (1 .. Name'Length) := Name; | |
2258 | C_Name (C_Name'Last) := ASCII.NUL; | |
2259 | return Open_Read_Write (C_Name (C_Name'First)'Address, Fmode); | |
2260 | end Open_Read_Write; | |
2261 | ||
33c423c8 AC |
2262 | ------------- |
2263 | -- OS_Exit -- | |
2264 | ------------- | |
2265 | ||
2266 | procedure OS_Exit (Status : Integer) is | |
2267 | begin | |
2268 | OS_Exit_Ptr (Status); | |
2269 | raise Program_Error; | |
2270 | end OS_Exit; | |
2271 | ||
2272 | --------------------- | |
2273 | -- OS_Exit_Default -- | |
2274 | --------------------- | |
2275 | ||
2276 | procedure OS_Exit_Default (Status : Integer) is | |
2277 | procedure GNAT_OS_Exit (Status : Integer); | |
2278 | pragma Import (C, GNAT_OS_Exit, "__gnat_os_exit"); | |
2279 | pragma No_Return (GNAT_OS_Exit); | |
2280 | begin | |
2281 | GNAT_OS_Exit (Status); | |
2282 | end OS_Exit_Default; | |
2283 | ||
30681738 RD |
2284 | -------------------- |
2285 | -- Pid_To_Integer -- | |
2286 | -------------------- | |
2287 | ||
2288 | function Pid_To_Integer (Pid : Process_Id) return Integer is | |
2289 | begin | |
2290 | return Integer (Pid); | |
2291 | end Pid_To_Integer; | |
2292 | ||
2293 | ---------- | |
2294 | -- Read -- | |
2295 | ---------- | |
2296 | ||
2297 | function Read | |
2298 | (FD : File_Descriptor; | |
2299 | A : System.Address; | |
2300 | N : Integer) return Integer | |
2301 | is | |
2302 | begin | |
b29def53 AC |
2303 | return |
2304 | Integer (System.CRTL.read | |
2305 | (System.CRTL.int (FD), | |
2306 | System.CRTL.chars (A), | |
2307 | System.CRTL.size_t (N))); | |
30681738 RD |
2308 | end Read; |
2309 | ||
2310 | ----------------- | |
2311 | -- Rename_File -- | |
2312 | ----------------- | |
2313 | ||
2314 | procedure Rename_File | |
2315 | (Old_Name : C_File_Name; | |
2316 | New_Name : C_File_Name; | |
2317 | Success : out Boolean) | |
2318 | is | |
2319 | function rename (From, To : Address) return Integer; | |
55cc1a05 | 2320 | pragma Import (C, rename, "__gnat_rename"); |
30681738 RD |
2321 | R : Integer; |
2322 | begin | |
2323 | R := rename (Old_Name, New_Name); | |
2324 | Success := (R = 0); | |
2325 | end Rename_File; | |
2326 | ||
2327 | procedure Rename_File | |
2328 | (Old_Name : String; | |
2329 | New_Name : String; | |
2330 | Success : out Boolean) | |
2331 | is | |
2332 | C_Old_Name : String (1 .. Old_Name'Length + 1); | |
2333 | C_New_Name : String (1 .. New_Name'Length + 1); | |
2334 | begin | |
2335 | C_Old_Name (1 .. Old_Name'Length) := Old_Name; | |
2336 | C_Old_Name (C_Old_Name'Last) := ASCII.NUL; | |
2337 | C_New_Name (1 .. New_Name'Length) := New_Name; | |
2338 | C_New_Name (C_New_Name'Last) := ASCII.NUL; | |
2339 | Rename_File (C_Old_Name'Address, C_New_Name'Address, Success); | |
2340 | end Rename_File; | |
2341 | ||
2342 | ----------------------- | |
2343 | -- Set_Close_On_Exec -- | |
2344 | ----------------------- | |
2345 | ||
2346 | procedure Set_Close_On_Exec | |
2347 | (FD : File_Descriptor; | |
2348 | Close_On_Exec : Boolean; | |
2349 | Status : out Boolean) | |
2350 | is | |
2351 | function C_Set_Close_On_Exec | |
2352 | (FD : File_Descriptor; Close_On_Exec : System.CRTL.int) | |
2353 | return System.CRTL.int; | |
2354 | pragma Import (C, C_Set_Close_On_Exec, "__gnat_set_close_on_exec"); | |
2355 | begin | |
2356 | Status := C_Set_Close_On_Exec (FD, Boolean'Pos (Close_On_Exec)) = 0; | |
2357 | end Set_Close_On_Exec; | |
2358 | ||
2359 | -------------------- | |
2360 | -- Set_Executable -- | |
2361 | -------------------- | |
2362 | ||
2363 | procedure Set_Executable (Name : String) is | |
2364 | procedure C_Set_Executable (Name : C_File_Name); | |
2365 | pragma Import (C, C_Set_Executable, "__gnat_set_executable"); | |
2366 | C_Name : aliased String (Name'First .. Name'Last + 1); | |
2367 | begin | |
2368 | C_Name (Name'Range) := Name; | |
2369 | C_Name (C_Name'Last) := ASCII.NUL; | |
2370 | C_Set_Executable (C_Name (C_Name'First)'Address); | |
2371 | end Set_Executable; | |
2372 | ||
43540ec6 AC |
2373 | ---------------------- |
2374 | -- Set_Non_Readable -- | |
2375 | ---------------------- | |
2376 | ||
2377 | procedure Set_Non_Readable (Name : String) is | |
2378 | procedure C_Set_Non_Readable (Name : C_File_Name); | |
2379 | pragma Import (C, C_Set_Non_Readable, "__gnat_set_non_readable"); | |
2380 | C_Name : aliased String (Name'First .. Name'Last + 1); | |
2381 | begin | |
2382 | C_Name (Name'Range) := Name; | |
2383 | C_Name (C_Name'Last) := ASCII.NUL; | |
2384 | C_Set_Non_Readable (C_Name (C_Name'First)'Address); | |
2385 | end Set_Non_Readable; | |
2386 | ||
2387 | ---------------------- | |
2388 | -- Set_Non_Writable -- | |
2389 | ---------------------- | |
2390 | ||
2391 | procedure Set_Non_Writable (Name : String) is | |
2392 | procedure C_Set_Non_Writable (Name : C_File_Name); | |
2393 | pragma Import (C, C_Set_Non_Writable, "__gnat_set_non_writable"); | |
2394 | C_Name : aliased String (Name'First .. Name'Last + 1); | |
2395 | begin | |
2396 | C_Name (Name'Range) := Name; | |
2397 | C_Name (C_Name'Last) := ASCII.NUL; | |
2398 | C_Set_Non_Writable (C_Name (C_Name'First)'Address); | |
2399 | end Set_Non_Writable; | |
2400 | ||
2401 | ------------------ | |
2402 | -- Set_Readable -- | |
2403 | ------------------ | |
2404 | ||
2405 | procedure Set_Readable (Name : String) is | |
2406 | procedure C_Set_Readable (Name : C_File_Name); | |
2407 | pragma Import (C, C_Set_Readable, "__gnat_set_readable"); | |
2408 | C_Name : aliased String (Name'First .. Name'Last + 1); | |
2409 | begin | |
2410 | C_Name (Name'Range) := Name; | |
2411 | C_Name (C_Name'Last) := ASCII.NUL; | |
2412 | C_Set_Readable (C_Name (C_Name'First)'Address); | |
2413 | end Set_Readable; | |
2414 | ||
30681738 RD |
2415 | -------------------- |
2416 | -- Set_Writable -- | |
2417 | -------------------- | |
2418 | ||
2419 | procedure Set_Writable (Name : String) is | |
2420 | procedure C_Set_Writable (Name : C_File_Name); | |
2421 | pragma Import (C, C_Set_Writable, "__gnat_set_writable"); | |
2422 | C_Name : aliased String (Name'First .. Name'Last + 1); | |
2423 | begin | |
2424 | C_Name (Name'Range) := Name; | |
2425 | C_Name (C_Name'Last) := ASCII.NUL; | |
2426 | C_Set_Writable (C_Name (C_Name'First)'Address); | |
2427 | end Set_Writable; | |
2428 | ||
2429 | ------------ | |
2430 | -- Setenv -- | |
2431 | ------------ | |
2432 | ||
2433 | procedure Setenv (Name : String; Value : String) is | |
2434 | F_Name : String (1 .. Name'Length + 1); | |
2435 | F_Value : String (1 .. Value'Length + 1); | |
2436 | ||
2437 | procedure Set_Env_Value (Name, Value : System.Address); | |
2438 | pragma Import (C, Set_Env_Value, "__gnat_setenv"); | |
2439 | ||
2440 | begin | |
2441 | F_Name (1 .. Name'Length) := Name; | |
2442 | F_Name (F_Name'Last) := ASCII.NUL; | |
2443 | ||
2444 | F_Value (1 .. Value'Length) := Value; | |
2445 | F_Value (F_Value'Last) := ASCII.NUL; | |
2446 | ||
2447 | Set_Env_Value (F_Name'Address, F_Value'Address); | |
2448 | end Setenv; | |
2449 | ||
2450 | ----------- | |
2451 | -- Spawn -- | |
2452 | ----------- | |
2453 | ||
2454 | function Spawn | |
2455 | (Program_Name : String; | |
2456 | Args : Argument_List) return Integer | |
2457 | is | |
30681738 | 2458 | Result : Integer; |
67ce0d7e RD |
2459 | Junk : Process_Id; |
2460 | pragma Warnings (Off, Junk); | |
30681738 RD |
2461 | begin |
2462 | Spawn_Internal (Program_Name, Args, Result, Junk, Blocking => True); | |
2463 | return Result; | |
2464 | end Spawn; | |
2465 | ||
2466 | procedure Spawn | |
2467 | (Program_Name : String; | |
2468 | Args : Argument_List; | |
2469 | Success : out Boolean) | |
2470 | is | |
2471 | begin | |
2472 | Success := (Spawn (Program_Name, Args) = 0); | |
2473 | end Spawn; | |
2474 | ||
2475 | procedure Spawn | |
2476 | (Program_Name : String; | |
2477 | Args : Argument_List; | |
2478 | Output_File_Descriptor : File_Descriptor; | |
2479 | Return_Code : out Integer; | |
2480 | Err_To_Out : Boolean := True) | |
2481 | is | |
2482 | Saved_Output : File_Descriptor; | |
2483 | Saved_Error : File_Descriptor := Invalid_FD; -- prevent compiler warning | |
2484 | ||
2485 | begin | |
2486 | -- Set standard output and error to the temporary file | |
2487 | ||
2488 | Saved_Output := Dup (Standout); | |
2489 | Dup2 (Output_File_Descriptor, Standout); | |
2490 | ||
2491 | if Err_To_Out then | |
2492 | Saved_Error := Dup (Standerr); | |
2493 | Dup2 (Output_File_Descriptor, Standerr); | |
2494 | end if; | |
2495 | ||
2496 | -- Spawn the program | |
2497 | ||
2498 | Return_Code := Spawn (Program_Name, Args); | |
2499 | ||
2500 | -- Restore the standard output and error | |
2501 | ||
2502 | Dup2 (Saved_Output, Standout); | |
2503 | ||
2504 | if Err_To_Out then | |
2505 | Dup2 (Saved_Error, Standerr); | |
2506 | end if; | |
2507 | ||
2508 | -- And close the saved standard output and error file descriptors | |
2509 | ||
2510 | Close (Saved_Output); | |
2511 | ||
2512 | if Err_To_Out then | |
2513 | Close (Saved_Error); | |
2514 | end if; | |
2515 | end Spawn; | |
2516 | ||
2517 | procedure Spawn | |
8b79ad42 AC |
2518 | (Program_Name : String; |
2519 | Args : Argument_List; | |
2520 | Output_File : String; | |
2521 | Success : out Boolean; | |
2522 | Return_Code : out Integer; | |
2523 | Err_To_Out : Boolean := True) | |
30681738 RD |
2524 | is |
2525 | FD : File_Descriptor; | |
2526 | ||
2527 | begin | |
2528 | Success := True; | |
2529 | Return_Code := 0; | |
2530 | ||
2531 | FD := Create_Output_Text_File (Output_File); | |
2532 | ||
2533 | if FD = Invalid_FD then | |
2534 | Success := False; | |
2535 | return; | |
2536 | end if; | |
2537 | ||
2538 | Spawn (Program_Name, Args, FD, Return_Code, Err_To_Out); | |
2539 | ||
2540 | Close (FD, Success); | |
2541 | end Spawn; | |
2542 | ||
2543 | -------------------- | |
2544 | -- Spawn_Internal -- | |
2545 | -------------------- | |
2546 | ||
2547 | procedure Spawn_Internal | |
2548 | (Program_Name : String; | |
2549 | Args : Argument_List; | |
2550 | Result : out Integer; | |
2551 | Pid : out Process_Id; | |
2552 | Blocking : Boolean) | |
2553 | is | |
2554 | ||
2555 | procedure Spawn (Args : Argument_List); | |
2556 | -- Call Spawn with given argument list | |
2557 | ||
2558 | N_Args : Argument_List (Args'Range); | |
2559 | -- Normalized arguments | |
2560 | ||
2561 | ----------- | |
2562 | -- Spawn -- | |
2563 | ----------- | |
2564 | ||
2565 | procedure Spawn (Args : Argument_List) is | |
2566 | type Chars is array (Positive range <>) of aliased Character; | |
2567 | type Char_Ptr is access constant Character; | |
2568 | ||
8b79ad42 AC |
2569 | Command_Len : constant Positive := Program_Name'Length + 1 |
2570 | + Args_Length (Args); | |
30681738 | 2571 | Command_Last : Natural := 0; |
8b79ad42 | 2572 | Command : aliased Chars (1 .. Command_Len); |
30681738 | 2573 | -- Command contains all characters of the Program_Name and Args, all |
d61f428e | 2574 | -- terminated by ASCII.NUL characters. |
30681738 | 2575 | |
8b79ad42 | 2576 | Arg_List_Len : constant Positive := Args'Length + 2; |
30681738 | 2577 | Arg_List_Last : Natural := 0; |
8b79ad42 | 2578 | Arg_List : aliased array (1 .. Arg_List_Len) of Char_Ptr; |
30681738 RD |
2579 | -- List with pointers to NUL-terminated strings of the Program_Name |
2580 | -- and the Args and terminated with a null pointer. We rely on the | |
2581 | -- default initialization for the last null pointer. | |
2582 | ||
2583 | procedure Add_To_Command (S : String); | |
2584 | -- Add S and a NUL character to Command, updating Last | |
2585 | ||
2586 | function Portable_Spawn (Args : Address) return Integer; | |
2587 | pragma Import (C, Portable_Spawn, "__gnat_portable_spawn"); | |
2588 | ||
2589 | function Portable_No_Block_Spawn (Args : Address) return Process_Id; | |
2590 | pragma Import | |
2591 | (C, Portable_No_Block_Spawn, "__gnat_portable_no_block_spawn"); | |
2592 | ||
2593 | -------------------- | |
2594 | -- Add_To_Command -- | |
2595 | -------------------- | |
2596 | ||
2597 | procedure Add_To_Command (S : String) is | |
2598 | First : constant Natural := Command_Last + 1; | |
2599 | ||
2600 | begin | |
2601 | Command_Last := Command_Last + S'Length; | |
2602 | ||
2603 | -- Move characters one at a time, because Command has aliased | |
2604 | -- components. | |
2605 | ||
2606 | -- But not volatile, so why is this necessary ??? | |
2607 | ||
2608 | for J in S'Range loop | |
2609 | Command (First + J - S'First) := S (J); | |
2610 | end loop; | |
2611 | ||
2612 | Command_Last := Command_Last + 1; | |
2613 | Command (Command_Last) := ASCII.NUL; | |
2614 | ||
2615 | Arg_List_Last := Arg_List_Last + 1; | |
2616 | Arg_List (Arg_List_Last) := Command (First)'Access; | |
2617 | end Add_To_Command; | |
2618 | ||
2619 | -- Start of processing for Spawn | |
2620 | ||
2621 | begin | |
2622 | Add_To_Command (Program_Name); | |
2623 | ||
2624 | for J in Args'Range loop | |
2625 | Add_To_Command (Args (J).all); | |
2626 | end loop; | |
2627 | ||
2628 | if Blocking then | |
ffdeb702 AC |
2629 | Pid := Invalid_Pid; |
2630 | Result := Portable_Spawn (Arg_List'Address); | |
30681738 | 2631 | else |
ffdeb702 AC |
2632 | Pid := Portable_No_Block_Spawn (Arg_List'Address); |
2633 | Result := Boolean'Pos (Pid /= Invalid_Pid); | |
30681738 RD |
2634 | end if; |
2635 | end Spawn; | |
2636 | ||
2637 | -- Start of processing for Spawn_Internal | |
2638 | ||
2639 | begin | |
2640 | -- Copy arguments into a local structure | |
2641 | ||
2642 | for K in N_Args'Range loop | |
2643 | N_Args (K) := new String'(Args (K).all); | |
2644 | end loop; | |
2645 | ||
2646 | -- Normalize those arguments | |
2647 | ||
2648 | Normalize_Arguments (N_Args); | |
2649 | ||
2650 | -- Call spawn using the normalized arguments | |
2651 | ||
2652 | Spawn (N_Args); | |
2653 | ||
2654 | -- Free arguments list | |
2655 | ||
2656 | for K in N_Args'Range loop | |
2657 | Free (N_Args (K)); | |
2658 | end loop; | |
2659 | end Spawn_Internal; | |
2660 | ||
2661 | --------------------------- | |
2662 | -- To_Path_String_Access -- | |
2663 | --------------------------- | |
2664 | ||
2665 | function To_Path_String_Access | |
2666 | (Path_Addr : Address; | |
2667 | Path_Len : Integer) return String_Access | |
2668 | is | |
2669 | subtype Path_String is String (1 .. Path_Len); | |
2670 | type Path_String_Access is access Path_String; | |
2671 | ||
8b79ad42 AC |
2672 | function Address_To_Access is new Ada.Unchecked_Conversion |
2673 | (Source => Address, Target => Path_String_Access); | |
30681738 RD |
2674 | |
2675 | Path_Access : constant Path_String_Access := | |
2676 | Address_To_Access (Path_Addr); | |
2677 | ||
2678 | Return_Val : String_Access; | |
2679 | ||
2680 | begin | |
2681 | Return_Val := new String (1 .. Path_Len); | |
2682 | ||
2683 | for J in 1 .. Path_Len loop | |
2684 | Return_Val (J) := Path_Access (J); | |
2685 | end loop; | |
2686 | ||
2687 | return Return_Val; | |
2688 | end To_Path_String_Access; | |
2689 | ||
2690 | ------------------ | |
2691 | -- Wait_Process -- | |
2692 | ------------------ | |
2693 | ||
2694 | procedure Wait_Process (Pid : out Process_Id; Success : out Boolean) is | |
2695 | Status : Integer; | |
2696 | ||
2697 | function Portable_Wait (S : Address) return Process_Id; | |
2698 | pragma Import (C, Portable_Wait, "__gnat_portable_wait"); | |
2699 | ||
2700 | begin | |
2701 | Pid := Portable_Wait (Status'Address); | |
2702 | Success := (Status = 0); | |
2703 | end Wait_Process; | |
2704 | ||
2705 | ----------- | |
2706 | -- Write -- | |
2707 | ----------- | |
2708 | ||
2709 | function Write | |
2710 | (FD : File_Descriptor; | |
2711 | A : System.Address; | |
2712 | N : Integer) return Integer | |
2713 | is | |
2714 | begin | |
b29def53 AC |
2715 | return |
2716 | Integer (System.CRTL.write | |
2717 | (System.CRTL.int (FD), | |
2718 | System.CRTL.chars (A), | |
2719 | System.CRTL.size_t (N))); | |
30681738 RD |
2720 | end Write; |
2721 | ||
2722 | end System.OS_Lib; |