1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- S Y S T E M . R E S P O N S E _ F I L E --
9 -- Copyright (C) 2007-2018, 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. --
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. --
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/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 -- This package provides facilities for getting command-line arguments from
33 -- a text file, called a "response file".
35 -- Using a response file allow passing a set of arguments to an executable
36 -- longer than the maximum allowed by the system on the command line.
38 pragma Compiler_Unit_Warning
;
42 package System
.Response_File
is
44 subtype String_Access
is System
.Strings
.String_Access
;
45 -- type String_Access is access all String;
47 procedure Free
(S
: in out String_Access
) renames System
.Strings
.Free
;
48 -- To deallocate a String
50 subtype Argument_List
is System
.Strings
.String_List
;
51 -- type String_List is array (Positive range <>) of String_Access;
53 Max_Line_Length
: constant := 4096;
54 -- The maximum length of lines in a response file
56 File_Does_Not_Exist
: exception;
57 -- Raise by Arguments_From when a response file cannot be found
59 Line_Too_Long
: exception;
60 -- Raise by Arguments_From when a line in the response file is longer than
63 No_Closing_Quote
: exception;
64 -- Raise by Arguments_From when a quoted string does not end before the
67 Circularity_Detected
: exception;
68 -- Raise by Arguments_From when Recursive is True and the same response
69 -- file is reading itself, either directly or indirectly.
71 function Arguments_From
72 (Response_File_Name
: String;
73 Recursive
: Boolean := False;
74 Ignore_Non_Existing_Files
: Boolean := False)
76 -- Read response file with name Response_File_Name and return the argument
77 -- it contains as an Argument_List. It is the responsibility of the caller
78 -- to deallocate the strings in the Argument_List if desired. When
79 -- Recursive is True, any argument of the form @file_name indicates the
80 -- name of another response file and is replaced by the arguments in this
83 -- Each nonempty line of the response file contains one or several
84 -- arguments separated by white space. Empty lines or lines containing only
85 -- white space are ignored. Arguments containing white space or a double
86 -- quote ('"')must be quoted. A double quote inside a quote string is
87 -- indicated by two consecutive double quotes. Example: "-Idir with quote
88 -- "" and spaces". Non-white-space characters immediately before or after a
89 -- quoted string are part of the same argument. Ex: -Idir" with "spaces
91 -- When a response file cannot be found, exception File_Does_Not_Exist is
92 -- raised if Ignore_Non_Existing_Files is False, otherwise the response
93 -- file is ignored. Exception Line_Too_Long is raised when a line of a
94 -- response file is longer than Max_Line_Length. Exception No_Closing_Quote
95 -- is raised when a quoted argument is not closed before the end of the
96 -- line. Exception Circularity_Detected is raised when a Recursive is True
97 -- and a response file is reading itself, either directly or indirectly.
99 end System
.Response_File
;