1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2008, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 -- This package contains the low level, operating system routines used in the
27 -- compiler and binder for command line processing and file input output.
29 with Namet; use Namet;
30 with Types; use Types;
32 with System.OS_Lib; use System.OS_Lib;
33 with System; use System;
35 pragma Elaborate_All (System.OS_Lib);
36 -- For the call to function Get_Target_Object_Suffix in the private part
40 Multi_Unit_Index_Character : Character := '~';
41 -- The character before the index of the unit in a multi-unit source, in
42 -- ALI and object file names. This is not a constant, because it is changed
45 Ada_Include_Path : constant String := "ADA_INCLUDE_PATH";
46 Ada_Objects_Path : constant String := "ADA_OBJECTS_PATH";
47 Project_Include_Path_File : constant String := "ADA_PRJ_INCLUDE_FILE";
48 Project_Objects_Path_File : constant String := "ADA_PRJ_OBJECTS_FILE";
51 -- Initialize internal tables
53 function Normalize_Directory_Name (Directory : String) return String_Ptr;
54 -- Verify and normalize a directory name. If directory name is invalid,
55 -- this will return an empty string. Otherwise it will insure a trailing
56 -- slash and make other normalizations.
58 type File_Type is (Source, Library, Config, Definition, Preprocessing_Data);
62 T : File_Type) return File_Name_Type;
63 -- Finds a source, library or config file depending on the value of T
64 -- following the directory search order rules unless N is the name of the
65 -- file just read with Next_Main_File and already contains directory
66 -- information, in which case just look in the Primary_Directory. Returns
67 -- File_Name_Type of the full file name if found, No_File if file not
68 -- found. Note that for the special case of gnat.adc, only the compilation
69 -- environment directory is searched, i.e. the directory where the ali and
70 -- object files are written. Another special case is Debug_Generated_Code
71 -- set and the file name ends on ".dg", in which case we look for the
72 -- generated file only in the current directory, since that is where it is
75 function Get_File_Names_Case_Sensitive return Int;
76 pragma Import (C, Get_File_Names_Case_Sensitive,
77 "__gnat_get_file_names_case_sensitive");
78 File_Names_Case_Sensitive : constant Boolean :=
79 Get_File_Names_Case_Sensitive /= 0;
80 -- Set to indicate whether the operating system convention is for file
81 -- names to be case sensitive (e.g., in Unix, set True), or non case
82 -- sensitive (e.g., in OS/2, set False).
84 procedure Canonical_Case_File_Name (S : in out String);
85 -- Given a file name, converts it to canonical case form. For systems
86 -- where file names are case sensitive, this procedure has no effect.
87 -- If file names are not case sensitive (i.e. for example if you have
88 -- the file "xyz.adb", you can refer to it as XYZ.adb or XyZ.AdB), then
89 -- this call converts the given string to canonical all lower case form,
90 -- so that two file names compare equal if they refer to the same file.
92 function Number_Of_Files return Int;
93 -- Gives the total number of filenames found on the command line
95 No_Index : constant := -1;
96 -- Value used in Add_File to indicate no index is specified for main
98 procedure Add_File (File_Name : String; Index : Int := No_Index);
99 -- Called by the subprogram processing the command line for each file name
100 -- found. The index, when not defaulted to No_Index is the index of the
101 -- subprogram in its source, zero indicating that the source is not
104 procedure Find_Program_Name;
105 -- Put simple name of current program being run (excluding the directory
106 -- path) in Name_Buffer, with the length in Name_Len.
108 function Program_Name (Nam : String; Prog : String) return String_Access;
109 -- In the native compilation case, Create a string containing Nam. In the
110 -- cross compilation case, looks at the prefix of the current program being
111 -- run and prepend it to Nam. For instance if the program being run is
112 -- <target>-gnatmake and Nam is "gcc", the returned value will be a pointer
113 -- to "<target>-gcc". In the specific case where AAMP_On_Target is set, the
114 -- name "gcc" is mapped to "gnaamp", and names of the form "gnat*" are
115 -- mapped to "gnaamp*". This function clobbers Name_Buffer and Name_Len.
116 -- Also look at any suffix, e.g. gnatmake-4.1 -> "gcc-4.1". Prog is the
117 -- default name of the current program being executed, e.g. "gnatmake",
120 procedure Write_Program_Name;
121 -- Writes name of program as invoked to the current output (normally
124 procedure Fail (S : String);
125 pragma No_Return (Fail);
126 -- Outputs error message S preceded by the name of the executing program
127 -- and exits with E_Fatal. The output goes to standard error, except if
128 -- special output is in effect (see Output).
130 function Is_Directory_Separator (C : Character) return Boolean;
131 -- Returns True if C is a directory separator
133 function Get_Directory (Name : File_Name_Type) return File_Name_Type;
134 -- Get the prefix directory name (if any) from Name. The last separator
135 -- is preserved. Return the normalized current directory if there is no
136 -- directory part in the name.
138 function Is_Readonly_Library (File : File_Name_Type) return Boolean;
139 -- Check if this library file is a read-only file
141 function Strip_Directory (Name : File_Name_Type) return File_Name_Type;
142 -- Strips the prefix directory name (if any) from Name. Returns the
143 -- stripped name. Name cannot end with a directory separator.
145 function Strip_Suffix (Name : File_Name_Type) return File_Name_Type;
146 -- Strips the suffix (the last '.' and whatever comes after it) from Name.
147 -- Returns the stripped name.
149 function Executable_Name (Name : File_Name_Type) return File_Name_Type;
150 -- Given a file name it adds the appropriate suffix at the end so that
151 -- it becomes the name of the executable on the system at end. For
152 -- instance under DOS it adds the ".exe" suffix, whereas under UNIX no
155 function Executable_Name (Name : String) return String;
156 -- Same as above, with String parameters
158 function File_Stamp (Name : File_Name_Type) return Time_Stamp_Type;
159 -- Returns the time stamp of file Name. Name should include relative path
160 -- information in order to locate it. If the source file cannot be opened,
161 -- or Name = No_File, and all blank time stamp is returned (this is not an
164 function File_Stamp (Name : Path_Name_Type) return Time_Stamp_Type;
165 -- Same as above for a path name
167 type String_Access_List is array (Positive range <>) of String_Access;
168 -- Dereferenced type used to return a list of file specs in
169 -- To_Canonical_File_List.
171 type String_Access_List_Access is access all String_Access_List;
172 -- Type used to return a String_Access_List without dragging in secondary
175 function To_Canonical_File_List
176 (Wildcard_Host_File : String;
177 Only_Dirs : Boolean) return String_Access_List_Access;
178 -- Expand a wildcard host syntax file or directory specification (e.g. on
179 -- a VMS host, any file or directory spec that contains: "*", or "%", or
180 -- "...") and return a list of valid Unix syntax file or directory specs.
181 -- If Only_Dirs is True, then only return directories.
183 function To_Canonical_Dir_Spec
185 Prefix_Style : Boolean) return String_Access;
186 -- Convert a host syntax directory specification (e.g. on a VMS host:
187 -- "SYS$DEVICE:[DIR]") to canonical (Unix) syntax (e.g. "/sys$device/dir").
188 -- If Prefix_Style then make it a valid file specification prefix. A file
189 -- specification prefix is a directory specification that can be appended
190 -- with a simple file specification to yield a valid absolute or relative
191 -- path to a file. On a conversion to Unix syntax this simply means the
192 -- spec has a trailing slash ("/").
194 function To_Canonical_File_Spec
195 (Host_File : String) return String_Access;
196 -- Convert a host syntax file specification (e.g. on a VMS host:
197 -- "SYS$DEVICE:[DIR]FILE.EXT;69 to canonical (Unix) syntax (e.g.
198 -- "/sys$device/dir/file.ext.69").
200 function To_Canonical_Path_Spec
201 (Host_Path : String) return String_Access;
202 -- Convert a host syntax Path specification (e.g. on a VMS host:
203 -- "SYS$DEVICE:[BAR],DISK$USER:[FOO] to canonical (Unix) syntax (e.g.
204 -- "/sys$device/foo:disk$user/foo").
206 function To_Host_Dir_Spec
207 (Canonical_Dir : String;
208 Prefix_Style : Boolean) return String_Access;
209 -- Convert a canonical syntax directory specification to host syntax.
210 -- The Prefix_Style flag is currently ignored but should be set to
213 function To_Host_File_Spec
214 (Canonical_File : String) return String_Access;
215 -- Convert a canonical syntax file specification to host syntax
217 function Relocate_Path
219 Path : String) return String_Ptr;
220 -- Given an absolute path and a prefix, if Path starts with Prefix,
221 -- replace the Prefix substring with the root installation directory.
222 -- By default, try to compute the root installation directory by looking
223 -- at the executable name as it was typed on the command line and, if
224 -- needed, use the PATH environment variable. If the above computation
225 -- fails, return Path. This function assumes Prefix'First = Path'First.
227 function Shared_Lib (Name : String) return String;
228 -- Returns the runtime shared library in the form -l<name>-<version> where
229 -- version is the GNAT runtime library option for the platform. For example
230 -- this routine called with Name set to "gnat" will return "-lgnat-5.02"
231 -- on UNIX and Windows and -lgnat_5_02 on VMS.
233 -------------------------
234 -- Search Dir Routines --
235 -------------------------
237 function Include_Dir_Default_Prefix return String;
238 -- Return the directory of the run-time library sources, as modified
241 function Object_Dir_Default_Prefix return String;
242 -- Return the directory of the run-time library ALI and object files, as
243 -- modified by update_path.
245 procedure Add_Default_Search_Dirs;
246 -- This routine adds the default search dirs indicated by the environment
247 -- variables and sdefault package.
249 procedure Add_Lib_Search_Dir (Dir : String);
250 -- Add Dir at the end of the library file search path
252 procedure Add_Src_Search_Dir (Dir : String);
253 -- Add Dir at the end of the source file search path
255 procedure Get_Next_Dir_In_Path_Init
256 (Search_Path : String_Access);
257 function Get_Next_Dir_In_Path
258 (Search_Path : String_Access) return String_Access;
259 -- These subprograms are used to parse out the directory names in a search
260 -- path specified by a Search_Path argument. The procedure initializes an
261 -- internal pointer to point to the initial directory name, and calls to
262 -- the function return successive directory names, with a null pointer
263 -- marking the end of the list.
265 type Search_File_Type is (Include, Objects);
267 procedure Add_Search_Dirs
268 (Search_Path : String_Ptr;
269 Path_Type : Search_File_Type);
270 -- These procedure adds all the search directories that are in Search_Path
271 -- in the proper file search path (library or source)
273 function Get_Primary_Src_Search_Directory return String_Ptr;
274 -- Retrieved the primary directory (directory containing the main source
275 -- file for Gnatmake.
277 function Nb_Dir_In_Src_Search_Path return Natural;
278 function Dir_In_Src_Search_Path (Position : Natural) return String_Ptr;
279 -- Functions to access the directory names in the source search path
281 function Nb_Dir_In_Obj_Search_Path return Natural;
282 function Dir_In_Obj_Search_Path (Position : Natural) return String_Ptr;
283 -- Functions to access the directory names in the Object search path
285 Include_Search_File : constant String_Access :=
286 new String'("ada_source_path");
287 Objects_Search_File : constant String_Access :=
288 new String'("ada_object_path");
289 -- Names of the files containing the default include or objects search
290 -- directories. These files, located in Sdefault.Search_Dir_Prefix, do
291 -- not necessarily exist.
293 Exec_Name : String_Ptr;
294 -- Executable name as typed by the user (used to compute the
295 -- executable prefix).
297 function Read_Default_Search_Dirs
298 (Search_Dir_Prefix : String_Access;
299 Search_File : String_Access;
300 Search_Dir_Default_Name : String_Access) return String_Access;
301 -- Read and return the default search directories from the file located
302 -- in Search_Dir_Prefix (as modified by update_path) and named Search_File.
303 -- If no such file exists or an error occurs then instead return the
304 -- Search_Dir_Default_Name (as modified by update_path).
306 function Get_RTS_Search_Dir
307 (Search_Dir : String;
308 File_Type : Search_File_Type) return String_Ptr;
309 -- This function retrieves the paths to the search (resp. lib) dirs and
310 -- return them. The search dir can be absolute or relative. If the search
311 -- dir contains Include_Search_File (resp. Object_Search_File), then this
312 -- function reads and returns the default search directories from the file.
313 -- Otherwise, if the directory is absolute, it will try to find 'adalib'
314 -- (resp. 'adainclude'). If found, null is returned. If the directory is
315 -- relative, the following directories for the directories 'adalib' and
316 -- 'adainclude' will be scanned:
318 -- - current directory (from which the tool has been spawned)
319 -- - $GNAT_ROOT/gcc/gcc-lib/$targ/$vers/
320 -- - $GNAT_ROOT/gcc/gcc-lib/$targ/$vers/rts-
322 -- The scan will stop as soon as the directory being searched for (adalib
323 -- or adainclude) is found. If the scan fails, null is returned.
325 -----------------------
326 -- Source File Input --
327 -----------------------
329 -- Source file input routines are used by the compiler to read the main
330 -- source files and the subsidiary source files (e.g. with'ed units), and
331 -- also by the binder to check presence/time stamps of sources.
333 procedure Read_Source_File
337 Src : out Source_Buffer_Ptr;
338 T : File_Type := Source);
339 -- Allocates a Source_Buffer of appropriate length and then reads the
340 -- entire contents of the source file N into the buffer. The address of
341 -- the allocated buffer is returned in Src.
343 -- Each line of text is terminated by one of the sequences:
349 -- The source is terminated by an EOF (16#1A#) character, which is the last
350 -- character of the returned source buffer (note that any EOF characters in
351 -- positions other than the last source character are treated as blanks).
353 -- The logical lower bound of the source buffer is the input value of Lo,
354 -- and on exit Hi is set to the logical upper bound of the source buffer.
355 -- Note that the returned value in Src points to an array with a physical
356 -- lower bound of zero. This virtual origin addressing approach means that
357 -- a constrained array pointer can be used with a low bound of zero which
358 -- results in more efficient code.
360 -- If the given file cannot be opened, then the action depends on whether
361 -- this file is the current main unit (i.e. its name matches the name
362 -- returned by the most recent call to Next_Main_Source). If so, then the
363 -- failure to find the file is a fatal error, an error message is output,
364 -- and program execution is terminated. Otherwise (for the case of a
365 -- subsidiary source loaded directly or indirectly using with), a file
366 -- not found condition causes null to be set as the result value.
368 -- Note that the name passed to this function is the simple file name,
369 -- without any directory information. The implementation is responsible
370 -- for searching for the file in the appropriate directories.
372 -- Note the special case that if the file name is gnat.adc, then the search
373 -- for the file is done ONLY in the directory corresponding to the current
374 -- compilation environment, i.e. in the same directory where the ali and
375 -- object files will be written.
377 function Full_Source_Name return File_Name_Type;
378 function Current_Source_File_Stamp return Time_Stamp_Type;
379 -- Returns the full name/time stamp of the source file most recently read
380 -- using Read_Source_File. Calling this routine entails no source file
381 -- directory lookup penalty.
383 function Full_Source_Name (N : File_Name_Type) return File_Name_Type;
384 function Source_File_Stamp (N : File_Name_Type) return Time_Stamp_Type;
385 -- Returns the full name/time stamp of the source file whose simple name
386 -- is N which should not include path information. Note that if the file
387 -- cannot be located No_File is returned for the first routine and an all
388 -- blank time stamp is returned for the second (this is not an error
389 -- situation). The full name includes appropriate directory information.
390 -- The source file directory lookup penalty is incurred every single time
391 -- the routines are called unless you have previously called
392 -- Source_File_Data (Cache => True). See below.
394 function Current_File_Index return Int;
395 -- Return the index in its source file of the current main unit
397 function Matching_Full_Source_Name
399 T : Time_Stamp_Type) return File_Name_Type;
400 -- Same semantics than Full_Source_Name but will search on the source path
401 -- until a source file with time stamp matching T is found. If none is
402 -- found returns No_File.
404 procedure Source_File_Data (Cache : Boolean);
405 -- By default source file data (full source file name and time stamp)
406 -- are looked up every time a call to Full_Source_Name (N) or
407 -- Source_File_Stamp (N) is made. This may be undesirable in certain
408 -- applications as this is uselessly slow if source file data does not
409 -- change during program execution. When this procedure is called with
410 -- Cache => True access to source file data does not incur a penalty if
411 -- this data was previously retrieved.
413 -------------------------------------------
414 -- Representation of Library Information --
415 -------------------------------------------
417 -- Associated with each compiled source file is library information,
418 -- a string of bytes whose exact format is described in the body of
419 -- Lib.Writ. Compiling a source file generates this library information
420 -- for the compiled unit, and access the library information for units
421 -- that were compiled previously on which the unit being compiled depends.
423 -- How this information is stored is up to the implementation of this
424 -- package. At the interface level, this information is simply associated
425 -- with its corresponding source.
427 -- Several different implementations are possible:
429 -- 1. The information could be directly associated with the source file,
430 -- e.g. placed in a resource fork of this file on the Mac, or on
431 -- MS-DOS, written to the source file after the end of file mark.
433 -- 2. The information could be written into the generated object module
434 -- if the system supports the inclusion of arbitrary informational
435 -- byte streams into object files. In this case there must be a naming
436 -- convention that allows object files to be located given the name of
437 -- the corresponding source file.
439 -- 3. The information could be written to a separate file, whose name is
440 -- related to the name of the source file by a fixed convention.
442 -- Which of these three methods is chosen depends on the constraints of the
443 -- host operating system. The interface described here is independent of
444 -- which of these approaches is used. Currently all versions of GNAT use
445 -- the third approach with a file name of xxx.ali where xxx is the source
448 -------------------------------
449 -- Library Information Input --
450 -------------------------------
452 -- These subprograms are used by the binder to read library information
453 -- files, see section above for representation of these files.
455 function Read_Library_Info
456 (Lib_File : File_Name_Type;
457 Fatal_Err : Boolean := False) return Text_Buffer_Ptr;
458 -- Allocates a Text_Buffer of appropriate length and reads in the entire
459 -- source of the library information from the library information file
460 -- whose name is given by the parameter Name.
462 -- See description of Read_Source_File for details on the format of the
463 -- returned text buffer (the format is identical). The lower bound of
464 -- the Text_Buffer is always zero
466 -- If the specified file cannot be opened, then the action depends on
467 -- Fatal_Err. If Fatal_Err is True, an error message is given and the
468 -- compilation is abandoned. Otherwise if Fatal_Err is False, then null
469 -- is returned. Note that the Lib_File is a simple name which does not
470 -- include any directory information. The implementation is responsible
471 -- for searching for the file in appropriate directories.
473 -- If Opt.Check_Object_Consistency is set to True then this routine
474 -- checks whether the object file corresponding to the Lib_File is
475 -- consistent with it. The object file is inconsistent if the object
476 -- does not exist or if it has an older time stamp than Lib_File.
477 -- This check is not performed when the Lib_File is "locked" (i.e.
478 -- read/only) because in this case the object file may be buried
479 -- in a library. In case of inconsistencies Read_Library_Info
480 -- behaves as if it did not find Lib_File (namely if Fatal_Err is
481 -- False, null is returned).
483 function Full_Library_Info_Name return File_Name_Type;
484 function Full_Object_File_Name return File_Name_Type;
485 -- Returns the full name of the library/object file most recently read
486 -- using Read_Library_Info, including appropriate directory information.
487 -- Calling this routine entails no library file directory lookup
488 -- penalty. Note that the object file corresponding to a library file
489 -- is not actually read. Its time stamp is affected when the flag
490 -- Opt.Check_Object_Consistency is set.
492 function Current_Library_File_Stamp return Time_Stamp_Type;
493 function Current_Object_File_Stamp return Time_Stamp_Type;
494 -- The time stamps of the files returned by the previous two routines.
495 -- It is an error to call Current_Object_File_Stamp if
496 -- Opt.Check_Object_Consistency is set to False.
498 function Full_Lib_File_Name (N : File_Name_Type) return File_Name_Type;
499 function Library_File_Stamp (N : File_Name_Type) return Time_Stamp_Type;
500 -- Returns the full name/time stamp of library file N. N should not include
501 -- path information. Note that if the file cannot be located No_File is
502 -- returned for the first routine and an all blank time stamp is returned
503 -- for the second (this is not an error situation). The full name includes
504 -- the appropriate directory information. The library file directory lookup
505 -- penalty is incurred every single time this routine is called.
507 function Lib_File_Name
508 (Source_File : File_Name_Type;
509 Munit_Index : Nat := 0) return File_Name_Type;
510 -- Given the name of a source file, returns the name of the corresponding
511 -- library information file. This may be the name of the object file or of
512 -- a separate file used to store the library information. In the current
513 -- implementation, a separate file (the ALI file) is always used. In either
514 -- case the returned result is suitable for calling Read_Library_Info. The
515 -- Munit_Index is the unit index in multiple unit per file mode, or zero in
516 -- normal single unit per file mode (used to add ~nnn suffix). Note: this
517 -- subprogram is in this section because it is used by the compiler to
518 -- determine the proper library information names to be placed in the
519 -- generated library information file.
525 Current_Exit_Status : Integer := 0;
526 -- Exit status that is set with procedure OS_Exit_Through_Exception below
527 -- and can be used in exception handler for Types.Terminate_Program to call
528 -- Set_Exit_Status as the last action of the program.
530 procedure OS_Exit_Through_Exception (Status : Integer);
531 -- Set the Current_Exit_Status, then raise Types.Terminate_Program
533 type Exit_Code_Type is (
534 E_Success, -- No warnings or errors
535 E_Warnings, -- Compiler warnings generated
536 E_No_Code, -- No code generated
537 E_No_Compile, -- Compilation not needed (smart recompilation)
538 E_Errors, -- Compiler error messages generated
539 E_Fatal, -- Fatal (serious) error, e.g. source file not found
540 E_Abort); -- Internally detected compiler error
542 procedure Exit_Program (Exit_Code : Exit_Code_Type);
543 pragma No_Return (Exit_Program);
544 -- A call to Exit_Program terminates execution with the given status. A
545 -- status of zero indicates normal completion, a non-zero status indicates
546 -- abnormal termination.
548 -------------------------
549 -- Command Line Access --
550 -------------------------
552 -- Direct interface to command line parameters. (We don't want to use
553 -- the predefined command line package because it defines functions
556 function Arg_Count return Natural;
557 pragma Import (C, Arg_Count, "__gnat_arg_count");
558 -- Get number of arguments (note: optional globbing may be enabled)
560 procedure Fill_Arg (A : System.Address; Arg_Num : Integer);
561 pragma Import (C, Fill_Arg, "__gnat_fill_arg");
562 -- Store one argument
564 function Len_Arg (Arg_Num : Integer) return Integer;
565 pragma Import (C, Len_Arg, "__gnat_len_arg");
566 -- Get length of argument
570 ALI_Suffix : constant String_Ptr := new String'("ali");
571 -- The suffix used for the library files (also known as ALI files)
573 Current_Main : File_Name_Type := No_File;
574 -- Used to save a simple file name between calls to Next_Main_Source and
575 -- Read_Source_File. If the file name argument to Read_Source_File is
576 -- No_File, that indicates that the file whose name was returned by the
577 -- last call to Next_Main_Source (and stored here) is to be read.
579 Target_Object_Suffix : constant String := Get_Target_Object_Suffix.all;
580 -- The suffix used for the target object files
582 Output_FD : File_Descriptor;
583 -- File descriptor for current library info, list, tree, or binder output
585 Output_File_Name : File_Name_Type;
586 -- File_Name_Type for name of open file whose FD is in Output_FD, the name
587 -- stored does not include the trailing NUL character.
589 Argument_Count : constant Integer := Arg_Count - 1;
590 -- Number of arguments (excluding program name)
592 type File_Name_Array is array (Int range <>) of String_Ptr;
593 type File_Name_Array_Ptr is access File_Name_Array;
594 File_Names : File_Name_Array_Ptr :=
595 new File_Name_Array (1 .. Int (Argument_Count) + 2);
596 -- As arguments are scanned, file names are stored in this array. The
597 -- strings do not have terminating NUL files. The array is extensible,
598 -- because when using project files, there may be more files than
599 -- arguments on the command line.
601 type File_Index_Array is array (Int range <>) of Int;
602 type File_Index_Array_Ptr is access File_Index_Array;
603 File_Indexes : File_Index_Array_Ptr :=
604 new File_Index_Array (1 .. Int (Argument_Count) + 2);
606 Current_File_Name_Index : Int := 0;
607 -- The index in File_Names of the last file opened by Next_Main_Source
608 -- or Next_Main_Lib_File. The value 0 indicates that no files have been
611 procedure Create_File_And_Check
612 (Fdesc : out File_Descriptor;
614 -- Create file whose name (NUL terminated) is in Name_Buffer (with the
615 -- length in Name_Len), and place the resulting descriptor in Fdesc. Issue
616 -- message and exit with fatal error if file cannot be created. The Fmode
617 -- parameter is set to either Text or Binary (for details see description
618 -- of System.OS_Lib.Create_File).
620 type Program_Type is (Compiler, Binder, Make, Gnatls, Unspecified);
621 -- Program currently running
622 procedure Set_Program (P : Program_Type);
623 -- Indicates to the body of Osint the program currently running. This
624 -- procedure is called by the child packages of Osint. A check is made
625 -- that this procedure is not called more than once.
627 function More_Files return Boolean;
628 -- Implements More_Source_Files and More_Lib_Files
630 function Next_Main_File return File_Name_Type;
631 -- Implements Next_Main_Source and Next_Main_Lib_File
633 function Object_File_Name (N : File_Name_Type) return File_Name_Type;
634 -- Constructs the name of the object file corresponding to library file N.
635 -- If N is a full file name than the returned file name will also be a full
636 -- file name. Note that no lookup in the library file directories is done
637 -- for this file. This routine merely constructs the name.
639 procedure Write_Info (Info : String);
640 -- Implementation of Write_Binder_Info, Write_Debug_Info and
641 -- Write_Library_Info (identical)
643 procedure Write_With_Check (A : Address; N : Integer);
644 -- Writes N bytes from buffer starting at address A to file whose FD is
645 -- stored in Output_FD, and whose file name is stored as a File_Name_Type
646 -- in Output_File_Name. A check is made for disk full, and if this is
647 -- detected, the file being written is deleted, and a fatal error is