summaryrefslogtreecommitdiff
path: root/gcc/ada/g-encstr.ads
diff options
context:
space:
mode:
authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/ada/g-encstr.ads
downloadcbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2
cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz
obtained gcc-4.6.4.tar.bz2 from upstream website;upstream
verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository.
Diffstat (limited to 'gcc/ada/g-encstr.ads')
-rwxr-xr-xgcc/ada/g-encstr.ads111
1 files changed, 111 insertions, 0 deletions
diff --git a/gcc/ada/g-encstr.ads b/gcc/ada/g-encstr.ads
new file mode 100755
index 000000000..59321dc50
--- /dev/null
+++ b/gcc/ada/g-encstr.ads
@@ -0,0 +1,111 @@
+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- G N A T . E N C O D E _ S T R I N G --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2007-2008, AdaCore --
+-- --
+-- GNAT is free software; you can redistribute it and/or modify it under --
+-- terms of the GNU General Public License as published by the Free Soft- --
+-- ware Foundation; either version 2, or (at your option) any later ver- --
+-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
+-- for more details. You should have received a copy of the GNU General --
+-- Public License distributed with GNAT; see file COPYING. If not, write --
+-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, USA. --
+-- --
+-- As a special exception, if other files instantiate generics from this --
+-- unit, or you link this unit with other files to produce an executable, --
+-- this unit does not by itself cause the resulting executable to be --
+-- covered by the GNU General Public License. This exception does not --
+-- however invalidate any other reasons why the executable file might be --
+-- covered by the GNU Public License. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+-- This generic package provides utility routines for converting from
+-- Wide_String or Wide_Wide_String to encoded String using a specified
+-- encoding convention, which is supplied as the generic parameter. If
+-- this parameter is a known at compile time constant (e.g. a constant
+-- defined in System.WCh_Con), the instantiation is specialized so that
+-- it applies only to this specified coding.
+
+-- Note: this package is only about encoding sequences of 16- or 32-bit
+-- characters into a sequence of 8-bit codes. It knows nothing at all about
+-- the character encodings being used for the input Wide_Character and
+-- Wide_Wide_Character values, although some of the encoding methods (notably
+-- JIS and EUC) have built in assumptions about the range of possible input
+-- code values. Most often the input will be Unicode/ISO-10646 as specified by
+-- the Ada RM, but this package does not make any assumptions about the
+-- character coding, and in the case of UTF-8 all possible code values can be
+-- encoded. See also the packages Ada.Wide_[Wide_]Characters.Unicode for
+-- unicode specific functions.
+
+-- Note on brackets encoding (WCEM_Brackets). On input, upper half characters
+-- can be represented as ["hh"] but the routines in this package will only use
+-- brackets encodings for codes higher than 16#FF#, so upper half characters
+-- will be output as single Character values.
+
+with System.WCh_Con;
+
+generic
+ Encoding_Method : System.WCh_Con.WC_Encoding_Method;
+
+package GNAT.Encode_String is
+ pragma Pure;
+
+ function Encode_Wide_String (S : Wide_String) return String;
+ pragma Inline (Encode_Wide_String);
+ -- Encode the given Wide_String, returning a String encoded using the
+ -- given encoding method. Constraint_Error will be raised if the encoding
+ -- method cannot accommodate the input data.
+
+ procedure Encode_Wide_String
+ (S : Wide_String;
+ Result : out String;
+ Length : out Natural);
+ -- Encode the given Wide_String, storing the encoded string in Result,
+ -- with Length being set to the length of the encoded string. The caller
+ -- must ensure that Result is long enough (see useful constants defined
+ -- in System.WCh_Con: WC_Longest_Sequence, WC_Longest_Sequences). If the
+ -- length of Result is insufficient Constraint_Error will be raised.
+ -- Constraint_Error will also be raised if the encoding method cannot
+ -- accommodate the input data.
+
+ function Encode_Wide_Wide_String (S : Wide_Wide_String) return String;
+ pragma Inline (Encode_Wide_Wide_String);
+ -- Same as above function but for Wide_Wide_String input
+
+ procedure Encode_Wide_Wide_String
+ (S : Wide_Wide_String;
+ Result : out String;
+ Length : out Natural);
+ -- Same as above procedure, but for Wide_Wide_String input
+
+ procedure Encode_Wide_Character
+ (Char : Wide_Character;
+ Result : in out String;
+ Ptr : in out Natural);
+ pragma Inline (Encode_Wide_Character);
+ -- This is a lower level procedure that encodes the single character Char.
+ -- The output is stored in Result starting at Result (Ptr), and Ptr is
+ -- updated past the stored value. Constraint_Error is raised if Result
+ -- is not long enough to accommodate the result, or if the encoding method
+ -- specified does not accommodate the input character value, or if Ptr is
+ -- outside the bounds of the Result string.
+
+ procedure Encode_Wide_Wide_Character
+ (Char : Wide_Wide_Character;
+ Result : in out String;
+ Ptr : in out Natural);
+ -- Same as above procedure but with Wide_Wide_Character input
+
+end GNAT.Encode_String;