fpc/ide/text/fputils.pas

{
    $Id$
    This file is part of the Free Pascal Integrated Development Environment
    Copyright (c) 1998 by Berczi Gabor

    Utilility routines used by the IDE

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 **********************************************************************}
unit FPUtils;

interface

uses Objects;

const
{$ifdef linux}
  dirsep = '/';
  listsep = [';',':'];
  exeext = '';
  pasext = '.pas';
  ppext  = '.pp';
{$else}
  dirsep = '\';
  listsep = [';'];
  exeext = '.exe';
  pasext = '.pas';
  ppext  = '.pp';
{$endif}

function IntToStr(L: longint): string;
function IntToStrZ(L: longint; MinLen: byte): string;
function IntToStrL(L: longint; MinLen: byte): string;
function StrToInt(S: string): longint;
function IntToHex(L: longint): string;
function IntToHexL(L: longint; MinLen: byte): string;
function HexToInt(S: string): longint;
function CharStr(C: char; Count: byte): string;
function SmartPath(Path: string): string;
Function FixPath(s:string;allowdot:boolean):string;
function FixFileName(const s:string):string;
function MakeExeName(const fn:string):string;
function LExpand(S: string; MinLen: byte): string;
function RExpand(S: string; MinLen: byte): string;
function FitStr(const S: string; Len: byte): string;
function LTrim(S: string): string;
function RTrim(S: string): string;
function Trim(S: string): string;
function KillTilde(S: string): string;
function UpcaseStr(S: string): string;
function LowerCaseStr(S: string): string;
function Max(A,B: longint): longint;
function Min(A,B: longint): longint;
function DirOf(const S: string): string;
function ExtOf(const S: string): string;
function NameOf(const S: string): string;
function NameAndExtOf(const S: string): string;
function StrToExtended(S: string): Extended;
function Power(const A,B: double): double;
function GetCurDir: string;
function MatchesMask(What, Mask: string): boolean;
function MatchesMaskList(What, MaskList: string): boolean;
function MatchesFileList(What, FileList: string): boolean;
function EatIO: integer;
function ExistsFile(const FileName: string): boolean;
function CompleteDir(const Path: string): string;
function LocateFile(FileList: string): string;
function LocatePasFile(const FileName:string):string;
function LocateExeFile(var FileName:string): boolean;
function GetStr(P: PString): string;

const LastStrToIntResult : integer = 0;
      LastHexToIntResult : integer = 0;
      ListSeparator      : char = ';';

implementation

uses Dos,
     FPVars;

function IntToStr(L: longint): string;
var S: string;
begin
  Str(L,S);
  IntToStr:=S;
end;

function StrToInt(S: string): longint;
var L: longint;
    C: integer;
begin
  Val(S,L,C);
  if C<>0 then L:=-1;
  LastStrToIntResult:=C;
  StrToInt:=L;
end;

function CharStr(C: char; Count: byte): string;
var S: string;
begin
  S[0]:=chr(Count);
  FillChar(S[1],Count,C);
  CharStr:=S;
end;

function IntToStrZ(L: longint; MinLen: byte): string;
var S: string;
begin
  S:=IntToStr(L);
  if length(S)<MinLen then S:=CharStr('0',MinLen-length(S))+S;
  IntToStrZ:=S;
end;

function IntToStrL(L: longint; MinLen: byte): string;
var S: string;
begin
  S:=IntToStr(L);
  if length(S)<MinLen then S:=CharStr(' ',MinLen-length(S))+S;
  IntToStrL:=S;
end;

function SmartPath(Path: string): string;
var S: string;
begin
  GetDir(0,S); if copy(S,length(S),1)<>DirSep then S:=S+DirSep;
  if (copy(Path,1,length(S))=S) {and (Pos('\',copy(Path,length(S)+1,255))=0)} then
     system.Delete(Path,1,length(S));
  SmartPath:=Path;
end;


Function FixPath(s:string;allowdot:boolean):string;
var
  i : longint;
begin
  for i:=1 to length(s) do
   if s[i] in ['/','\'] then
    s[i]:=DirSep;
  if (length(s)>0) and (s[length(s)]<>DirSep) and
     (s[length(s)]<>':') then
   s:=s+DirSep;
  if (not allowdot) and (s='.'+DirSep) then
   s:='';
  FixPath:=s;
end;


function FixFileName(const s:string):string;
var
  i      : longint;
  NoPath : boolean;
begin
  NoPath:=true;
  for i:=length(s) downto 1 do
   begin
     case s[i] of
 {$ifdef Linux}
  '/','\' : begin
              FixFileName[i]:='/';
              NoPath:=false; {Skip lowercasing path: 'X11'<>'x11' }
            end;
 'A'..'Z' : if NoPath then
             FixFileName[i]:=char(byte(s[i])+32)
            else
             FixFileName[i]:=s[i];
 {$else}
      '/' : FixFileName[i]:='\';
 'A'..'Z' : FixFileName[i]:=char(byte(s[i])+32);
 {$endif}
     else
      FixFileName[i]:=s[i];
     end;
   end;
  FixFileName[0]:=s[0];
end;


function MakeExeName(const fn:string):string;
var
  d : DirStr;
  n : NameStr;
  e : ExtStr;
begin
  FSplit(fn,d,n,e);
  MakeExeName:=d+n+ExeExt;
end;


function LExpand(S: string; MinLen: byte): string;
begin
  if length(S)<MinLen then S:=CharStr(' ',MinLen-length(S))+S;
  LExpand:=S;
end;


function RExpand(S: string; MinLen: byte): string;
begin
  if length(S)<MinLen then S:=S+CharStr(' ',MinLen-length(S));
  RExpand:=S;
end;


function FitStr(const S: string; Len: byte): string;
begin
  FitStr:=RExpand(copy(S,1,Len),Len);
end;


function KillTilde(S: string): string;
var P: longint;
begin
  repeat
    P:=Pos('~',S);
    if P>0 then
      Delete(S,P,1);
  until P=0;
  KillTilde:=S;
end;

function UpcaseStr(S: string): string;
var I: Longint;
begin
  for I:=1 to length(S) do
      S[I]:=Upcase(S[I]);
  UpcaseStr:=S;
end;

function LowerCaseStr(S: string): string;
var I: byte;
begin
  for I:=1 to length(S) do
    if S[I] in ['A'..'Z'] then S[I]:=chr(ord(S[I])+32);
  LowerCaseStr:=S;
end;

function Max(A,B: longint): longint;
begin
  if A>B then Max:=A else Max:=B;
end;

function Min(A,B: longint): longint;
begin
  if A<B then Min:=A else Min:=B;
end;

function DirOf(const S: string): string;
var D: DirStr; E: ExtStr; N: NameStr;
begin
  FSplit(S,D,N,E);
  if (D<>'') and (D[Length(D)]<>DirSep) then
   DirOf:=D+DirSep
  else
   DirOf:=D;
end;


function ExtOf(const S: string): string;
var D: DirStr; E: ExtStr; N: NameStr;
begin
  FSplit(S,D,N,E);
  ExtOf:=E;
end;


function NameOf(const S: string): string;
var D: DirStr; E: ExtStr; N: NameStr;
begin
  FSplit(S,D,N,E);
  NameOf:=N;
end;

function NameAndExtOf(const S: string): string;
var D: DirStr; E: ExtStr; N: NameStr;
begin
  FSplit(S,D,N,E);
  NameAndExtOf:=N+E;
end;

function StrToExtended(S: string): Extended;
var R : Extended;
    C : integer;
begin
  Val(S,R,C);
  StrToExtended:=R;
end;

function Power(const A,B: double): double;
begin
  if A=0 then Power:=0
         else Power:=exp(B*ln(A));
end;

function GetCurDir: string;
var S: string;
begin
  GetDir(0,S);
  if copy(S,length(S),1)<>DirSep then S:=S+DirSep;
  GetCurDir:=S;
end;

function IntToHex(L: longint): string;
const HexNums : string[16] = '0123456789ABCDEF';
var S: string;
    R: real;
function DivF(Mit,Mivel: real): longint;
begin
  DivF:=trunc(Mit/Mivel);
end;
function ModF(Mit,Mivel: real): longint;
begin
  ModF:=trunc(Mit-DivF(Mit,Mivel)*Mivel);
end;
begin
  S:='';
  R:=L; if R<0 then begin R:=R+2147483647+2147483647+2; end;
  repeat
    S:=HexNums[ModF(R,16)+1]+S;
    R:=DivF(R,16);
  until R=0;
  IntToHex:=S;
end;

function HexToInt(S: string): longint;
var L,I: longint;
    C: char;
const HexNums: string[16] = '0123456789ABCDEF';
begin
  S:=Trim(S); L:=0; I:=1; LastHexToIntResult:=0;
  while (I<=length(S)) and (LastHexToIntResult=0) do
  begin
    C:=Upcase(S[I]);
    if C in['0'..'9','A'..'F'] then
    begin
      L:=L*16+(Pos(C,HexNums)-1);
    end else LastHexToIntResult:=I;
    Inc(I);
  end;
  HexToInt:=L;
end;

function IntToHexL(L: longint; MinLen: byte): string;
var S: string;
begin
  S:=IntToHex(L);
  while length(S)<MinLen do S:='0'+S;
  IntToHexL:=S;
end;

function LTrim(S: string): string;
begin
  while copy(S,1,1)=' ' do Delete(S,1,1);
  LTrim:=S;
end;

function RTrim(S: string): string;
begin
  while copy(S,length(S),1)=' ' do Delete(S,length(S),1);
  RTrim:=S;
end;

function Trim(S: string): string;
begin
  Trim:=RTrim(LTrim(S));
end;

function MatchesMask(What, Mask: string): boolean;
var P: integer;
    Match: boolean;
begin
  P:=Pos('*',Mask);
  if P>0 then
    begin
      Mask:=copy(Mask,1,P-1);
      What:=copy(What,1,P-1);
    end;
  Match:=length(Mask)=length(What); P:=1;
  if Match and (Mask<>'') then
  repeat
    Match:=Match and ((Mask[P]='?') or (Upcase(Mask[P])=Upcase(What[P])));
    Inc(P);
  until (Match=false) or (P>length(Mask));
  MatchesMask:=Match;
end;

function MatchesMaskList(What, MaskList: string): boolean;
var P: integer;
    Match: boolean;
begin
  Match:=false;
  if What<>'' then
  repeat
    P:=Pos(ListSeparator, MaskList);
    if P=0 then P:=length(MaskList)+1;
    Match:=MatchesMask(What,copy(MaskList,1,P-1));
    Delete(MaskList,1,P);
  until Match or (MaskList='');
  MatchesMaskList:=Match;
end;

function MatchesFileList(What, FileList: string): boolean;
var P: integer;
    Match: boolean;
    WD,FD : record D: DirStr; N: NameStr; E: ExtStr; end;
    F: string;
begin
  Match:=false;
  FSplit(What,WD.D,WD.N,WD.E);
  if What<>'' then
  repeat
    P:=Pos(ListSeparator, FileList);
    if P=0 then P:=length(FileList)+1;
    F:=copy(FileList,1,P-1);
    FSplit(F,FD.D,FD.N,FD.E);
    Match:=MatchesMask(WD.D+WD.N,FD.D+FD.N) and
           MatchesMask(WD.E,FD.E);
    Delete(FileList,1,P);
  until Match or (FileList='');
  MatchesFileList:=Match;
end;

function EatIO: integer;
begin
  EatIO:=IOResult;
end;

function ExistsFile(const FileName: string): boolean;
var
  Dir : SearchRec;
begin
  FindFirst(FileName,Archive+ReadOnly,Dir);
  ExistsFile:=(DosError=0);
end;

function CompleteDir(const Path: string): string;
begin
  { keep c: untouched PM }
  if (Path<>'') and (Path[Length(Path)]<>DirSep) and
     (Path[Length(Path)]<>':') then
   CompleteDir:=Path+DirSep
  else
   CompleteDir:=Path;
end;

function LocateFile(FileList: string): string;
var FilePath: string;
function CheckFile(Path,Name: string): boolean;
var OK: boolean;
begin
  Path:=CompleteDir(Path);
  Path:=Path+Name;
  OK:=ExistsFile(Path);
  if OK then FilePath:=Path;
  CheckFile:=OK;
end;
function LocateSingleFile(FileName: string): boolean;
var OK: boolean;
begin
  OK:=CheckFile(FExpand('.'),FileName);
  if OK=false then OK:=CheckFile(StartupDir,FileName);
  if OK=false then OK:=CheckFile(DirOf(FExpand(ParamStr(0))),FileName);
  LocateSingleFile:=OK;
end;
var P: integer;
begin
  FilePath:='';
  if FileList<>'' then
  repeat
    P:=Pos(ListSeparator,FileList); if P=0 then P:=length(FileList)+1;
    LocateSingleFile(copy(FileList,1,P-1));
    Delete(FileList,1,P);
  until (FilePath<>'') or (FileList='');
  LocateFile:=FilePath;
end;

function LocatePasFile(const FileName:string):string;
var
  s : string;
begin
  LocatePasFile:=FileName;
  if ExistsFile(FileName) or (ExtOf(FileName)<>'') then
   exit;
  S:=FileName+PPExt;
  if ExistsFile(S) then
   begin
     LocatePasFile:=S;
     exit;
   end;
  S:=FileName+PasExt;
  if ExistsFile(S) then
   begin
     LocatePasFile:=S;
     exit;
   end;
end;

function LocateExeFile(var FileName:string): boolean;
var
  dir,s : string;
  i : longint;
begin
  LocateExeFile:=False;
  if ExistsFile(FileName) then
    begin
      LocateExeFile:=true;
      Exit;
    end;
   
  S:=GetEnv('PATH');
  i:=1;
  While Length(S)>0 do
    begin
      While (i<=Length(S)) and not (S[i] in ListSep) do
        Inc(i);
      Dir:=CompleteDir(Copy(S,1,i-1));
      if i<Length(S) then
        S:=Copy(S,i+1,255)
      else
        S:='';
      if ExistsFile(Dir+FileName) then
        Begin
           FileName:=Dir+FileName;
           LocateExeFile:=true;
           Exit;
        End;
   end;
end;

function GetStr(P: PString): string;
begin
  if P=nil then GetStr:='' else GetStr:=P^;
end;



END.
{
  $Log$
  Revision 1.6  1999-02-05 12:12:01  pierre
    + SourceDir that stores directories for sources that the
      compiler should not know about
      Automatically asked for addition when a new file that
      needed filedialog to be found is in an unknown directory
      Stored and retrieved from INIFile
    + Breakpoints conditions added to INIFile
    * Breakpoints insterted and removed at debin and end of debug session

  Revision 1.5  1999/02/02 16:41:43  peter
    + automatic .pas/.pp adding by opening of file
    * better debuggerscreen changes

  Revision 1.4  1999/01/21 11:54:25  peter
    + tools menu
    + speedsearch in symbolbrowser
    * working run command

  Revision 1.3  1999/01/12 14:29:40  peter
    + Implemented still missing 'switch' entries in Options menu
    + Pressing Ctrl-B sets ASCII mode in editor, after which keypresses (even
      ones with ASCII < 32 ; entered with Alt+<###>) are interpreted always as
      ASCII chars and inserted directly in the text.
    + Added symbol browser
    * splitted fp.pas to fpide.pas

  Revision 1.2  1998/12/28 15:47:53  peter
    + Added user screen support, display & window
    + Implemented Editor,Mouse Options dialog
    + Added location of .INI and .CFG file
    + Option (INI) file managment implemented (see bottom of Options Menu)
    + Switches updated
    + Run program

  Revision 1.31 1998/12/27 11:25:37  gabor
    + MatchesMask(), MatchesMaskList() and MatchesFileList() added
    + NameAndExtOf() added
  Revision 1.3  1998/12/22 10:39:52  peter
    + options are now written/read
    + find and replace routines

}