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CD ROM Paradise Collection 4
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CD ROM Paradise Collection 4 1995 Nov.iso
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DIRS.SWG
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0001_ForEachFile Procedure.pas
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Pascal/Delphi Source File
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1993-05-28
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4KB
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165 lines
{
Can any one tell me a way to make pascal (TP 6.0) search a
complete drive, including all subdirectories, even ones
that are not in the path, looking For a specific File
extension? I.E., having the Program search For *.DOC and
saving that to a Text File?
Here's part of a package I'm putting together. You'd use it like this:
}
{File Test.Pas}
Uses
Dos, Foreach;
Procedure PrintAllDocs;
Procedure PrintFile(Var Dir: DirStr; Var S : SearchRec); Far;
begin
Writeln('Found File ',Dir,S.Name);
end;
begin
ForEachFile('c:\*.doc', { Give the mask where you want to start looking }
0, 0, { Specify File attributes here; you'll just get
normal Files With 0 }
True, { Search recursively }
@PrintFile); { Routine to call For each File }
end;
begin
PrintAllDocs;
end.
{Unit ForEach}
Unit ForEach;
{ Unit With a few different "foreach" Functions. }
{ This extract contains only ForEachFile. }
Interface
Uses
Dos;
Type
FileStr = String[12];
TFileAction = Procedure(Var Dir : DirStr;
Var S : SearchRec; ConText : Word);
Procedure ForEachFile(Mask : PathStr; { File wildcard mask, including path }
Attr : Byte; { File attributes }
Match : Byte; { File attributes which
must match attr exactly }
Subdirs : Boolean; { Whether to search recursively }
Action : Pointer);
{ Calls the Far local Procedure Action^ For each File found.
Action^ should be a local Procedure With declaration
Procedure Action(Var Path : String; Var S : SearchRec); Far;
or, if not a local Procedure,
Procedure Action(Var Path : String; Var S : SearchRec; Dummy : Word); Far;
Each time Action is called S will be filled in For a File matching
the search criterion.
}
Implementation
Function CallerFrame : Word;
{ Returns the BP value of the caller's stack frame; used For passing
local Procedures and Functions around. Taken from Borland's Outline
Unit. }
Inline(
$8B/$46/$00 { MOV AX,[BP] }
);
{ ******** File routines ********* }
Procedure ForEachFile(Mask : PathStr; { File wildcard mask }
Attr : Byte; { File attributes }
Match : Byte; { Attributes which must match }
Subdirs : Boolean; { Whether to search recursively }
Action : Pointer);{ Action; should point to
a TFileAction local Far Procedure }
Var
CurrentDir : DirStr;
Doit : TFileAction Absolute Action;
Frame : Word;
Procedure DoDir;
{ Tests all Files in current directory. Assumes currentdir has trailing
backslash }
Var
S : SearchRec;
begin
FindFirst(CurrentDir + Mask, Attr, S);
While DosError = 0 do
begin
if (S.Attr and Match) = (Attr and Match) then
Doit(CurrentDir, S, Frame);
FindNext(S);
end;
end;
Function RealDir(Name : FileStr) : Boolean;
begin
RealDir := (Name <> '.') and (Name <> '..');
end;
Procedure AddBackslash;
begin
CurrentDir := CurrentDir + '\';
end;
Procedure DoAllDirs;
Var
S : SearchRec;
OldLength : Byte;
Procedure AddSuffix(Suffix : FileStr); { Separate proc to save stack space }
begin
CurrentDir := Copy(CurrentDir, 1, OldLength) + Suffix;
end;
begin
OldLength := Length(CurrentDir);
DoDir;
AddSuffix('*.*');
FindFirst(CurrentDir, Directory, S);
While DosError = 0 do
begin
if S.Attr = Directory then
begin
if RealDir(S.Name) then
begin
AddSuffix(S.Name);
AddBackslash;
DoAllDirs; { do directory recursively }
end;
end;
FindNext(S);
end;
end;
Var
Name : NameStr;
Ext : ExtStr;
begin { ForEachFile }
FSplit(Mask, CurrentDir, Name, Ext);
Mask := Name+Ext;
Frame := CallerFrame;
if CurrentDir[Length(CurrentDir)] <> '\' then
AddBackslash;
if Subdirs then
DoAllDirs
else
DoDir;
end;
end.