+ sscanf

git-svn-id: trunk@604 -

.gitattributes

@@ -5315,6 +5315,7 @@ tests/test/units/system/ttrunc.pp svneol=native#text/plain
 tests/test/units/sysutils/execansi.pp svneol=native#text/plain
 tests/test/units/sysutils/execedbya.pp svneol=native#text/plain
 tests/test/units/sysutils/extractquote.pp svneol=native#text/plain
+tests/test/units/sysutils/tsscanf.pp svneol=native#text/plain
 tests/test/uprocext1.pp svneol=native#text/plain
 tests/test/uprocext2.pp svneol=native#text/plain
 tests/test/utasout.pp svneol=native#text/plain

rtl/objpas/sysutils/sysstr.inc

@@ -757,7 +757,7 @@ function StrToInt(const S: string): integer;
 var Error: word;
 begin
   Val(S, result, Error);
-  if Error <> 0 then raise EConvertError.createfmt(SInValidInteger,[S]);
+  if Error <> 0 then raise EConvertError.createfmt(SInvalidInteger,[S]);
 end ;
 
 
@@ -766,7 +766,7 @@ var Error: word;
 
 begin
   Val(S, result, Error);
-  if Error <> 0 then raise EConvertError.createfmt(SInValidInteger,[S]);
+  if Error <> 0 then raise EConvertError.createfmt(SInvalidInteger,[S]);
 end;
 
 
@@ -2068,3 +2068,144 @@ const
      #240, #241, #242, #243, #244, #245, #246, #247,
      #248, #249, #250, #251, #252, #253, #254, #255 );
 
+
+function sscanf(const s: string; const fmt : string;const Pointers : array of Pointer) : Integer;
+  var
+    i,j,n,m : SizeInt;
+    s1      : string;
+
+  function GetInt : Integer;
+    begin
+      s1 := '';
+      while (s[n] = ' ')  and (Length(s) > n) do
+        inc(n);
+      while (s[n] in ['0'..'9', '+', '-'])
+        and (Length(s) >= n) do
+        begin
+          s1 := s1+s[n];
+          inc(n);
+        end;
+      Result := Length(s1);
+    end;
+
+
+  function GetFloat : Integer;
+    begin
+      s1 := '';
+      while (s[n] = ' ')  and (Length(s) > n) do
+        inc(n);
+      while (s[n] in ['0'..'9', '+', '-', '.', 'e', 'E'])
+        and (Length(s) >= n) do
+        begin
+          s1 := s1+s[n];
+          inc(n);
+        end;
+      Result := Length(s1);
+    end;
+
+
+  function GetString : Integer;
+    begin
+      s1 := '';
+      while (s[n] = ' ')  and (Length(s) > n) do
+        inc(n);
+      while (s[n] <> ' ') and (Length(s) >= n) do
+        begin
+          s1 := s1+s[n];
+          inc(n);
+        end;
+      Result := Length(s1);
+    end;
+
+
+  function ScanStr(c : Char) : Boolean;
+    begin
+      while (s[n] <> c) and (Length(s) > n) do inc(n);
+        inc(n);
+      If (n <= Length(s)) then
+        Result := True
+      else
+        Result := False;
+    end;
+
+
+  function GetFmt : Integer;
+    begin
+      Result := -1;
+      while true do
+        begin
+
+          while (fmt[m] = ' ') and (Length(fmt) > m) do
+            inc(m);
+
+          if (m >= Length(fmt)) then
+            break;
+
+          if (fmt[m] = '%') then
+            begin
+              inc(m);
+              case fmt[m] of
+                'd': Result := vtInteger;
+                'f': Result := vtExtended;
+                's': Result := vtString;
+                else
+                  raise EFormatError.CreateFmt(SInvalidFormat,[fmt]);
+              end;
+              inc(m);
+              break;
+            end;
+
+          if not(ScanStr(fmt[m])) then
+            break;
+          inc(m);
+        end;
+    end;
+
+
+  begin
+    n := 1;
+    m := 1;
+    Result := 0;
+
+    for i:=0 to High(Pointers) do
+      begin
+        j := GetFmt;
+        case j of
+          vtInteger :
+            begin
+              if GetInt > 0 then
+                begin
+                  plongint(Pointers[i])^:=StrToInt(s1);
+                  inc(Result);
+                end
+              else
+                break;
+
+            end;
+
+          vtExtended :
+            begin
+              if GetFloat>0 then
+                begin
+                  pextended(Pointers[i])^:=StrToFloat(s1);
+                  inc(Result);
+                end
+              else
+                break;
+            end;
+
+          vtString :
+            begin
+              if GetString > 0 then
+                begin
+                  pansistring(Pointers[i])^:=s1;
+                  inc(Result);
+                end
+              else
+                break;
+            end;
+          else
+            break;
+        end;
+      end;
+   end;

rtl/objpas/sysutils/sysstrh.inc

@@ -150,6 +150,8 @@ Function FormatFloat(Const Format : String; Value : Extended) : String;
 Function IsDelimiter(const Delimiters, S: string; Index: Integer): Boolean;
 function FormatCurr(const Format: string; Value: Currency): string;
 
+function SScanf(const s: string; const fmt : string;const Pointers : array of Pointer) : Integer;
+
 {// MBCS Functions. No MBCS yet, so mostly these are calls to the regular counterparts.}
 Type
   TMbcsByteType = (mbSingleByte, mbLeadByte, mbTrailByte);

rtl/objpas/sysutils/sysutilh.inc

@@ -129,6 +129,7 @@ type
 
    { String conversion errors }
    EConvertError = class(Exception);
+   EFormatError = class(Exception);
 
    { Other errors }
    EAbort           = Class(Exception);

rtl/objpas/sysutils/sysutils.inc

@@ -536,38 +536,3 @@ begin
     end;
 end;
 
-{
-  Revision 1.1  2003/10/06 21:01:06  peter
-    * moved classes unit to rtl
-
-  Revision 1.17  2003/09/06 20:46:07  marco
-   * 3 small VP fixes from Noah Silva. One (OutOfMemory error) failed.
-
-  Revision 1.16  2003/04/06 11:06:39  michael
-  + Added exception classname to output of unhandled exception for better identification
-
-  Revision 1.15  2003/03/18 08:28:23  michael
-  Patch from peter for Abort routine
-
-  Revision 1.14  2003/03/17 15:11:51  armin
-  + someone AssertErrorHandler, BackTraceFunc and Dump_Stack so that pointer instead of longint is needed
-
-  Revision 1.13  2003/01/01 20:58:07  florian
-    + added invalid instruction exception
-
-  Revision 1.12  2002/10/07 19:43:24  florian
-    + empty prototypes for the AnsiStr* multi byte functions added
-
-  Revision 1.11  2002/09/07 16:01:22  peter
-    * old logs removed and tabs fixed
-
-  Revision 1.10  2002/07/16 13:57:39  florian
-    * raise takes now a void pointer as at and frame address
-      instead of a longint, fixed
-
-  Revision 1.9  2002/01/25 17:42:03  peter
-    * interface helpers
-
-  Revision 1.8  2002/01/25 16:23:03  peter
-    * merged filesearch() fix
-}

tests/test/units/sysutils/tsscanf.pp

@@ -0,0 +1,18 @@
+{$mode objfpc}
+{$h+}
+uses
+  sysutils;
+var
+  e : extended;
+  s : string;
+  l : longint;
+begin
+  sscanf('asdf 1.2345 1234','%s %f %d',[@s,@e,@l]);
+  if (e<>1.2345) or
+    (l<>1234) or
+    (s<>'asdf') then
+    halt(1);
+  // writeln(s,' ',e,' ',l);
+  writeln('ok');
+end.
+