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1016 | with
lace.Environ.OS_Commands,
lace.Text.utility,
posix.file_Status,
posix.Calendar,
shell.Directory_Iteration,
lace.Text.all_Tokens,
ada.Strings.fixed,
ada.Characters.handling,
ada.Directories,
ada.Direct_IO,
ada.Tags,
ada.Text_IO,
ada.IO_Exceptions;
package body lace.Environ.Paths
is
-----------
--- General
--
function "+" (Source : in unbounded_String) return String
renames to_String;
function expand_GLOB (GLOB : in String) return String
is
use ada.Text_IO;
FileName : constant File := +"/tmp/lace_environ_temporary_shell.sh";
File : File_Type;
begin
create (File, out_File, +Filename);
put_Line (File, "echo " & GLOB);
close (File);
change_Mode (Path (Filename), to => "a+rwx");
declare
use lace.Environ.OS_Commands;
Output : constant String := run_OS ("bash " & (+Filename));
begin
rid_File (Filename);
return Output;
end;
end expand_GLOB;
---------
--- Paths
--
function to_String (Self : in Path'Class) return String
is
begin
return to_String (Self.Name);
end to_String;
procedure check (Self : in Path'Class)
is
use ada.Tags,
ada.Strings.fixed,
ada.Characters.handling;
Tag_full_Name : constant String := to_Lower (ada.Tags.expanded_Name (Self'Tag));
Tag_Name : constant String := (if Self'Tag = Folder'Tag then Tail (Tag_full_Name, 6)
else Tail (Tag_full_Name, 4));
begin
if Self.Name = ""
then
raise Error with "No " & Tag_Name & " specified.";
end if;
if not Exists (Self)
then
raise Error with Tag_Name & " '" & (+Self) & "' does not exist.";
end if;
end check;
procedure link (Self, To : in Path)
is
begin
check (Self);
declare
use lace.Environ.OS_Commands;
Output : constant String := run_OS ( "ln -s "
& (+Self)
& " "
& (+To));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
end link;
procedure change_Mode (Self : in Path;
To : in String)
is
begin
check (Self);
declare
use lace.Environ.OS_Commands;
Output : constant String := run_OS ("chmod -R " & To & " " & (+Self));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
end change_Mode;
procedure change_Owner (Self : in Path;
To : in String)
is
begin
check (Self);
declare
use lace.Environ.OS_Commands;
Output : constant String := run_OS ("chown -R " & To & " " & (+Self));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
end change_Owner;
function Exists (Self : in Path) return Boolean
is
begin
if +Self = ""
then
raise Error with "No path specified.";
end if;
return ada.Directories.Exists (+Self);
end Exists;
function is_Folder (Self : in Path) return Boolean
is
use ada.Directories;
begin
check (Self);
return Kind (+Self) = Directory;
end is_Folder;
function is_File (Self : in Path) return Boolean
is
use ada.Directories;
begin
check (Self);
return Kind (+Self) = Ordinary_File;
end is_File;
function is_Special (Self : in Path) return Boolean
is
use ada.Directories;
begin
check (Self);
return Kind (+Self) = Special_File;
end is_Special;
function is_Absolute (Self : in Path) return Boolean
is
begin
if Length (Self.Name) = 0
then
return False;
end if;
return Element (Self.Name, 1) = '/';
end is_Absolute;
function is_Relative (Self : in Path) return Boolean
is
begin
return not is_Absolute (Self);
end is_Relative;
function modify_Time (Self : in Path) return ada.Calendar.Time
is
begin
check (Self);
declare
use POSIX,
POSIX.Calendar,
POSIX.File_Status;
the_Status : constant Status := get_File_Status (pathname => to_POSIX_String (+Self));
Time : constant POSIX_Time := last_modification_Time_of (the_Status);
begin
return to_Time (Time);
end;
end modify_Time;
function Parent (Self : in Path'Class) return Folder
is
begin
declare
use ada.Strings;
Index : constant Natural := fixed.Index (+Self, "/", going => Backward);
begin
if Index = 0
then
return no_Folder;
elsif Index = 1
then
return +"/";
end if;
declare
Result : Folder;
begin
Result.Name := Head (Self.Name,
Count => Index - 1);
return Result;
end;
end;
end Parent;
function Name (Self : in Path) return String
is
begin
return +Self.Name;
end Name;
function Simple (Self : in Path) return String
is
begin
check (Self);
declare
use ada.Strings;
Idx : constant Natural := Index (Self.Name, "/", going => Backward);
Last : constant Natural := Length (Self.Name);
begin
if Idx = 0
then
return +Self;
else
return Slice (Self.Name, Low => Idx + 1,
High => Last);
end if;
end;
end Simple;
-----------
--- Folders
--
function to_Folder (Name : in String) return Folder
is
begin
return (Name => To_Unbounded_String (Name));
end to_Folder;
function "+" (Left : in Folder; Right : in Folder) return Folder
is
R_Folder : constant String := (if Right.is_Absolute then Right.Simple
else +Right);
Result : Folder;
begin
Result.Name := Left.Name;
append (Result.Name, "/" & R_Folder);
return Result;
end "+";
function "+" (Left : in Folder'Class;
Right : in File 'Class) return File
is
R_File : constant String := (if Right.is_Absolute then Right.Simple
else +Right);
Result : File;
begin
Result.Name := Left.Name;
append (Result.Name, "/" & R_File);
return Result;
end "+";
function current_Folder return Folder
is
begin
return +ada.Directories.current_Directory;
end current_Folder;
protected folder_Lock
is
entry change (To : in Folder);
procedure clear;
private
Locked : Boolean := False;
end folder_Lock;
protected body folder_Lock
is
entry change (To : in Folder)
when not Locked
is
begin
check (To);
ada.Directories.set_Directory (+To);
Locked := True;
end change;
procedure clear
is
begin
Locked := False;
end clear;
end folder_Lock;
procedure go_to_Folder (Self : in Folder;
Lock : in Boolean := False)
is
begin
check (Self);
if Lock
then
folder_Lock.change (Self);
else
ada.Directories.set_Directory (+Self);
end if;
end go_to_Folder;
procedure unlock_Folder
is
begin
folder_Lock.clear;
end unlock_Folder;
function contents_Count (Self : in Folder;
Recurse : in Boolean := False) return Natural
is
use Shell.Directory_Iteration,
Ada.Directories;
Count : Natural := 0;
begin
check (Self);
for Each of To_Directory (+Self, Recurse)
loop
declare
Name : constant String := Simple_Name (Each);
begin
if not (Name = "." or Name = "..")
then
Count := Count + 1;
end if;
end;
end loop;
return Count;
end contents_Count;
function is_Empty (Self : in Folder) return Boolean
is
begin
check (Self);
return contents_Count (Self) = 0;
end is_Empty;
procedure rid_Folder (Self : in Folder)
is
begin
check (Self);
ada.Directories.delete_Tree (+Self);
exception
when ada.IO_Exceptions.name_Error =>
null;
end rid_Folder;
procedure copy_Folder (Self : in Folder; To : in Folder)
is
use lace.Environ.OS_Commands;
begin
check (Self);
check (To);
run_OS ("cp -fr " & (+Self) & " " & (+To));
end copy_Folder;
procedure move_Folder (Self : in Folder; To : in Folder)
is
use lace.Environ.OS_Commands;
begin
check (Self);
check (To);
run_OS ("mv " & (+Self) & " " & (+To));
end move_Folder;
procedure rename_Folder (Self : in Folder; To : in Folder)
is
begin
check (Self);
ada.Directories.rename (+Self, +To);
end rename_Folder;
procedure ensure_Folder (Self : in Folder)
is
begin
if Self.Name = ""
then
raise Error with "No folder specified.";
end if;
ada.Directories.create_Path (+Self);
end ensure_Folder;
function Relative (Self : in Folder; To : in Folder'Class) return Folder
is
use lace.Text,
lace.Text.utility;
Filename : constant lace.Text.item := to_Text (+Self);
relative_Folder : constant lace.Text.item := replace (Filename, pattern => +To & "/",
by => "");
begin
return to_Folder (+relative_Folder);
end Relative;
-------------------
--- Folder Contexts
--
procedure push_Folder (Context : in out folder_Context;
goto_Folder : in Folder'Class)
is
begin
check (goto_Folder);
Context.folder_Stack.append (current_Folder);
go_to_Folder (goto_Folder);
end push_Folder;
procedure pop_Folder (Context : in out folder_Context)
is
begin
if Context.folder_Stack.is_Empty
then
raise Error with "'pop_Folder': No prior folder exists.";
end if;
declare
prior_Folder : constant Folder := Context.folder_Stack.last_Element;
begin
Context.folder_Stack.delete_Last;
go_to_Folder (prior_Folder);
end;
end pop_Folder;
procedure pop_All (Context : in out folder_Context)
is
begin
if Context.folder_Stack.is_Empty
then
raise Error with "'pop_All': No initial folder exists.";
end if;
go_to_Folder (Context.folder_Stack.Element (1));
Context.folder_Stack.clear;
end pop_All;
---------
--- Files
--
function to_File (Name : in String) return File
is
Self : File;
begin
set_unbounded_String (Self.Name, Name);
return Self;
end to_File;
function "+" (Left : in File'Class;
Right : in File_Extension) return File
is
begin
return to_File (+Left & "." & String (Right));
end "+";
function Extension (Self : in File) return File_Extension
is
use ada.Directories;
begin
return File_Extension (Extension (+Self.Name));
end Extension;
procedure save (Self : in File;
Text : in String;
Binary : in Boolean := False)
is
begin
if Binary
then
declare
type binary_String is new String (Text'Range);
package Binary_IO is new ada.Direct_IO (binary_String);
use Binary_IO;
File : File_Type;
begin
create (File, out_File, +Self);
write (File, binary_String (Text));
close (File);
end;
else
declare
use ada.Text_IO;
File : File_Type;
begin
create (File, out_File, +Self);
put (File, Text);
close (File);
end;
end if;
end save;
procedure save (Self : in File;
Data : in environ.Data)
is
begin
check (Self);
declare
type Element_Array is new environ.Data (Data'Range);
package Binary_IO is new ada.Direct_IO (Element_Array);
use Binary_IO;
File : File_Type;
begin
create (File, out_File, +Self);
write (File, Element_Array (Data));
close (File);
end;
end save;
function load (Self : in File) return String
is
use type ada.Directories.File_Size;
Size : ada.Directories.File_Size;
begin
check (Self);
Size := ada.Directories.Size (+Self);
if Size = 0
then
return "";
end if;
declare
type my_String is new String (1 .. Natural (Size));
package String_IO is new ada.Direct_IO (my_String);
use String_IO;
File : File_Type;
Result : my_String;
begin
open (File, in_File, +Self);
read (File, Result);
close (File);
return String (Result);
end;
exception
when ada.IO_Exceptions.Name_Error =>
raise Error with "Cannot load missing file: '" & (+Self) & "'";
end load;
function load (Self : in File) return Data
is
begin
check (Self);
declare
use ada.Streams;
Size : constant ada.Directories.File_Size := ada.Directories.Size (+Self);
type Element_Array is new Data (0 .. Stream_Element_Offset (Size) - 1);
package Binary_IO is new ada.Direct_IO (Element_Array);
use Binary_IO;
File : Binary_IO.File_Type;
Result : Element_Array;
begin
open (File, out_File, +Self);
read (File, Result);
close (File);
return Data (Result);
end;
exception
when ada.IO_Exceptions.Name_Error =>
raise Error with "Cannot load missing file: '" & (+Self) & "'";
end load;
procedure copy_File (Self : in File; To : in File)
is
begin
check (Self);
check (To);
ada.Directories.copy_File (+Self, +To);
end copy_File;
procedure copy_Files (Named : in String; To : in Folder)
is
use lace.Text,
lace.Text.all_Tokens,
ada.Strings.fixed;
all_Files : constant String := (if Index (Named, "*") /= 0 then Expand_GLOB (Named)
else Named);
file_List : constant Text.items_1k := Tokens (to_Text (all_Files));
begin
check (To);
for Each of file_List
loop
declare
use ada.Directories;
Name : constant String := +Each;
begin
if Kind (Name) = Directory
then
copy_Folder (+Name,
To);
else
copy_File (to_File (Name),
To + to_File (simple_Name (Name)));
end if;
end;
end loop;
end copy_Files;
procedure move_File (Self : in File; To : in File)
is
begin
check (Self);
check (To);
-- 'Ada.Directories.Rename' fails when the file is moved across a device.
-- For instance Rename ("/tmp/a_file", "/home/user/a_file");
ada.Directories.copy_File (+Self, +To);
rid_File (Self);
end move_File;
procedure move_Files (Named : in String; To : in Folder)
is
begin
check (To);
declare
use lace.Text,
lace.Text.all_Tokens,
ada.Strings.fixed;
all_Files : constant String := (if Index (Named, "*") /= 0 then Expand_GLOB (Named)
else Named);
file_List : constant Text.items_1k := Tokens (to_Text (all_Files));
begin
for Each of file_List
loop
if +Each /= +To -- Don't move a directory to a subdirectory of itself.
then
declare
use ada.Directories;
Name : constant String := +Each;
begin
if Kind (Name) = Directory
then
move_Folder (+Name,
To);
else
move_File (to_File (Name),
To + to_File (simple_Name (Name)));
end if;
end;
end if;
end loop;
end;
end move_Files;
procedure append (Self : in File; Text : in String)
is
begin
check (Self);
declare
use ada.Text_IO;
Target : File_type;
begin
open (Target, append_File, Name => +Self);
put (Target, Text);
close (Target);
end;
end append;
procedure append_File (Self : in File; To : in File)
is
begin
check (Self);
check (To);
declare
use ada.Text_IO;
Text : constant String := load (Self);
Target : File_type;
begin
open (Target, append_File, Name => +To);
put (Target, Text);
close (Target);
end;
end append_File;
procedure rid_File (Self : in File)
is
begin
check (Self);
ada.Directories.delete_File (+Self);
end rid_File;
procedure rid_Files (Named : in String)
is
use lace.Text,
lace.Text.all_Tokens,
ada.Strings.fixed;
all_Files : constant String := (if Index (Named, "*") /= 0 then Expand_GLOB (Named)
else Named);
file_List : constant Text.items_1k := Tokens (to_Text (all_Files));
begin
for Each of file_List
loop
check (to_File (+Each));
rid_File (to_File (+Each));
end loop;
end rid_Files;
procedure touch (Self : in File)
is
use lace.Environ.OS_Commands;
Output : constant String := run_OS ("touch " & (+Self));
begin
if Output /= ""
then
raise Error with Output;
end if;
end touch;
function Relative (Self : in File; To : in Folder'Class) return File
is
use lace.Text,
lace.Text.utility;
Filename : constant lace.Text.item := to_Text (+Self);
relative_File : constant lace.Text.item := replace (Filename, pattern => +To & "/",
by => "");
begin
return to_File (+relative_File);
end Relative;
function rid_Extension (Self : in File) return File
is
use ada.Directories;
Parent : constant Folder := Self.Parent;
Name : constant String := base_Name (+Self.Name);
begin
return Parent + to_File (Name);
end rid_Extension;
---------------
--- Compression
--
procedure compress (the_Path : in Path'Class;
the_Format : in compress_Format := Tar_Xz;
the_Level : in compress_Level := 6)
is
use lace.Environ.OS_Commands;
function level_Flag return String
is
use ada.Strings,
ada.Strings.fixed;
begin
return " -"
& Trim (compress_Level'Image (the_Level),
Left)
& " ";
end level_Flag;
begin
check (the_Path);
case the_Format
is
when Tar |Tar_Bz2 | Tar_Gz | Tar_Xz =>
declare
Options : constant String := (case the_Format
is
when Tar => "-cf",
when Tar_Bz2 => "-cjf",
when Tar_Gz => "-czf",
when Tar_Xz => "-cJf",
when others => raise program_Error);
Output : constant String := run_OS ( "tar " & Options
& " " & (+the_Path) & format_Suffix (the_Format)
& " " & (+the_Path));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
when Gz =>
declare
Output : constant String := run_OS ( "gzip --force --keep --rsyncable"
& level_Flag
& " " & (+the_Path));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
when Bz2 =>
declare
Output : constant String := run_OS ( "bzip2 --force --keep"
& level_Flag
& " " & (+the_Path));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
when Xz =>
declare
Output : constant String := run_OS ("xz --force --keep --threads=0 " & (+the_Path));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
end case;
end compress;
procedure decompress (Name : in File)
is
use lace.Environ.OS_Commands;
begin
check (Name);
declare
use ada.Strings.fixed;
the_Format : constant compress_Format := (if Tail (+Name, 4) = ".tar" then Tar
elsif Tail (+Name, 8) = ".tar.bz2" then Tar_Bz2
elsif Tail (+Name, 7) = ".tar.gz"
or Tail (+Name, 4) = ".tgz" then Tar_Gz
elsif Tail (+Name, 7) = ".tar.xz" then Tar_Xz
elsif Tail (+Name, 3) = ".gz" then Gz
elsif Tail (+Name, 4) = ".bz2" then Bz2
elsif Tail (+Name, 3) = ".xz" then Xz
else raise Error with "Unknown decompress format: " & (+Name));
begin
case the_Format
is
when Tar |Tar_Bz2 | Tar_Gz | Tar_Xz =>
declare
Options : aliased constant String := (case the_Format
is
when Tar => "-xf",
when Tar_Bz2 => "-xjf",
when Tar_Gz => "-xzf",
when Tar_Xz => "-xJf",
when others => raise program_Error);
Output : constant String := run_OS ("tar " & Options & " " & (+Name));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
when Gz =>
declare
Output : constant String := run_OS ("gunzip --force --keep " & (+Name));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
when Bz2 =>
declare
Output : constant String := run_OS ("bunzip2 --force --keep " & (+Name));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
when Xz =>
declare
Output : constant String := run_OS ("xz --decompress --force --keep " & (+Name));
begin
if Output /= ""
then
raise Error with Output;
end if;
end;
end case;
end;
end decompress;
function format_Suffix (Format : compress_Format) return String
is
begin
case Format
is
when Tar => return ".tar";
when Tar_Bz2 => return ".tar.bz2";
when Tar_Gz => return ".tar.gz";
when Tar_Xz => return ".tar.xz";
when Bz2 => return ".bz2";
when Gz => return ".gz";
when Xz => return ".xz";
end case;
end format_Suffix;
end lace.Environ.Paths;
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