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Length: 5120 (0x1400)
Types: Ada Source
Notes: 03_class, FILE, R1k_Segment, e3_tag, package Low_Level_File_Operations, seg_0046df
└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
└─⟦5a81ac88f⟧ »Space Info Vol 1«
└─⟦this⟧
--| @SUMMARY This package provides cleaner versions of the file
--| opening/creating operations in the "Io" package.
--|
--| @INDICES (Text_Processing, Utility)
--|
with Io;
package Low_Level_File_Operations is
--| @SUMMARY Creates a file.
--|
--| @RAISES Io_Failure (if the creation attempt fails for some reason).
--|
--| @SPECIAL_NOTES If the specified file already exists, does nothing.
--|
--| If the specified file does not already exist, creates it.
--|
procedure Create (This_File : in String);
--| @SUMMARY Attempts to open the specified file for reading and return
--| a pointer to it.
--|
--| @RAISES Io_Failure (if the attempt fails for some reason).
--|
function Open_To_Read
(This_File : in String) return Io.File_Type;
--| @SUMMARY Attempts to open the specified file for reading.
--|
--| @RAISES Io_Failure (if the attempt fails for some reason).
--|
procedure Open_To_Read
(This_File : in String; The_File : out Io.File_Type);
--| @SUMMARY Attempts to open the specified file for writing and return
--| a pointer to it.
--|
--| @RAISES Io_Failure (if the attempt fails for some reason).
--|
--| @SPECIAL_NOTES Any pre-existing contents of the file are overwritten.
--|
function Open_To_Write
(This_File : in String) return Io.File_Type;
--| @SUMMARY Attempts to open the specified file for writing.
--|
--| @RAISES Io_Failure (if the attempt fails for some reason).
--|
--| @SPECIAL_NOTES Any pre-existing contents of the file are overwritten.
--|
procedure Open_To_Write
(This_File : in String; The_File : out Io.File_Type);
--| @SUMMARY Attempts to open the specified file for appending and return
--| a pointer to it.
--|
--| @RAISES Io_Failure (if the attempt fails for some reason).
--|
--| @SPECIAL_NOTES If the file does not exist, attempts to create it.
--|
function Open_To_Append
(This_File : in String) return Io.File_Type;
--| @SUMMARY Attempts to open the specified file for appending.
--|
--| @RAISES Io_Failure (if the attempt fails for some reason).
--|
--| @SPECIAL_NOTES If the file does not exist, attempts to create it.
--|
procedure Open_To_Append
(This_File : in String; The_File : out Io.File_Type);
--| @SUMMARY Attempts to close the specified file.
--|
--| @SPECIAL_NOTES If the file is not open or doesn't exist, has
--| no effect.
--|
procedure Close
(This_File : in out Io.File_Type);
--| @SUMMARY Attempts to destroy the specified file.
--|
--| @SPECIAL_NOTES If the file is not open or doesn't exist, has
--| no effect.
--|
procedure Destroy (This_File : in out Io.File_Type);
--| @SUMMARY Attempts to destroy the specified file.
--|
--| @SPECIAL_NOTES If the file is not open or doesn't exist, has
--| no effect.
--|
procedure Destroy (This_File : in String);
Io_Failure : exception;
end Low_Level_File_Operations;
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