KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q28448: Example Calling OS/2 DosFindFirst, DosFindNext, DosFindClose

Article: Q28448
Product(s): See article
Version(s): 6.00 6.00b 7.00
Operating System(s): OS/2
Keyword(s): ENDUSER | | mspl13_basic
Last Modified: 2-FEB-1990

Below is an example of calling OS/2 DosFindFirst, DosFindNext, and
DosFindClose.

'Declarations found in file BSEDOSFL.BI
'Compiler options: /D/W (/V requires modifications to the code)
CONST TRUE=-1
CONST FALSE=0

TYPE FILEFINDBUF
        fdateCreation  AS INTEGER
        ftimeCreation  AS INTEGER
        fdateLastAccess AS INTEGER
        ftimeLastAccess AS INTEGER
        fdateLastWrite AS INTEGER
        ftimeLastWrite AS INTEGER
        cbFile         AS LONG
        cbFileAlloc    AS LONG
        attrFile       AS INTEGER
        cchName        AS STRING * 1
        achName        AS STRING * 13
END TYPE

DECLARE FUNCTION DosFindFirst%( _
        BYVAL P1s AS INTEGER,_
        BYVAL P1o AS INTEGER,_
        SEG   P2 AS INTEGER,_
        BYVAL P3 AS INTEGER,_
        SEG   P4 AS FILEFINDBUF,_
        BYVAL P5 AS INTEGER,_
        SEG   P6 AS INTEGER,_
        BYVAL P7 AS LONG)

DECLARE FUNCTION DosFindNext%( _
        BYVAL P1 AS INTEGER,_
        SEG   P2 AS FILEFINDBUF,_
        BYVAL P3 AS INTEGER,_
        SEG   P4 AS INTEGER)

DECLARE FUNCTION DosFindClose%( _
        BYVAL P1 AS INTEGER)

'Routines to print Date/Time and File Type

DECLARE FUNCTION wdate$(p1 as integer)
DECLARE FUNCTION wtime$(p1 as integer)
DECLARE FUNCTION RightShift%(P1 as LONG,P2 as Integer)
DECLARE FUNCTION LeftShift%(P1 as LONG, P2 as Integer)
DECLARE FUNCTION FileType$(P1 as Integer)

DEFINT a-z

COLOR 15,1
DIM buffer AS FileFindBuf
DIM filelist(255) as FileFindBuf
DIM reserved  AS LONG

CLS
print "Test of DOSFINDFIRST..."

INPUT "Enter the Filename(s) : ";flname$
flname$=flname$+chr$(0)

atr= 0+2+4+16    'normal + hidden + system + subdirectory
dirh=1
searchcount=1
bufflen=36

x=DosFindFirst%(varseg(flname$),sadd(flname$),_
                dirh,atr,buffer,bufflen,searchcount,reserved)
IF (X=0) THEN
   DO
     counter=counter+1
     filelist(counter)=buffer
     buffer.achname=string$(13,32)  'assign blanks
     buffer.fdatelastwrite=0
     buffer.ftimelastwrite=0
   LOOP WHILE (DosFindNext%(dirh,buffer,bufflen,searchcount) = 0 )
ELSE
    PRINT "No MATCH was found"
    END
END IF
CLS

print  "FILENAME : "; : LOCATE 1,30 : PRINT "FILE SIZE : ";
locate 2,1 : PRINT "LAST WRITE DATE : ";
locate 3,1 : PRINT "LAST WRITE TIME : ";
locate 4,1 : PRINT "FILE TYPE : ";
COLOR 5

i = 1

done=FALSE

key 15, chr$(&h00)+chr$(&h01) 'ESC KEY to EXIT
on key (15) gosub FINISH
on key (11) gosub UP
on key (14) gosub DOWN
key (15) on
key (11) on
key (14) on

locate 20,1 : Print "Enter ESC to quit, UP/DOWN ARROWS to scroll list";

while (not DONE)
lp:
 LOCATE 1,14 : PRINT filelist(i).achname;
 LOCATE 1,45 : PRINT filelist(i).cbfile;"/";filelist(i).cbfilealloc;"       "
 LOCATE 2,20 : PRINT wdate$(filelist(i).fdatelastwrite);"        ";
 LOCATE 3,20 : PRINT wtime$(filelist(i).ftimelastwrite);"        ";
 LOCATE 4,15 : PRINT filetype$(filelist(i).attrfile);"       ";
 a$=inkey$
 if a$="" then goto lp
wend

color 15
x=DosFindClose%(dirh)
IF (x) THEN
  color 7 : PRINT "An error occurred. The number is : ";x : color 15
ELSE
  color ,0
  cls
END IF
END
STOP

FINISH:
   DONE = TRUE
   RETURN
   STOP
UP:
   IF i = 1 THEN
      locate 24,1
      color 7
      print "At the top of the list                       ";
      color 5
   ELSE
      locate 24,1 : print string$(78,32);
      i = i - 1
   END IF
   RETURN
   STOP
DOWN:
   IF i = counter THEN
      locate 24,1
      color 7
      Print "At the bottom of the list                  ";
      color 5
   ELSE
      i = i + 1
      locate 24,1 : print string$(78,32);
   END IF
   RETURN
   STOP

FUNCTION wdate$(d%) static
DIM dl AS LONG
    dl=unsigned&(d%)
    mn=(RightShift%(dl,5)) AND (&h0f)
    IF mn < 10 THEN
       mn$="0"+ltrim$(str$(mn))
    ELSE
       mn$=ltrim$(str$(mn))
    END IF
    dy= dl AND (&h1f)
    IF dy < 10 THEN
       dy$="0"+ltrim$(str$(dy))
    ELSE
       dy$=ltrim$(str$(dy))
    END IF
    yr$=str$(RightShift(dl,9)+1980)
    wdate$=mn$+"/"+dy$+"/"+ltrim$(yr$)
END FUNCTION

FUNCTION wtime$(d%)
DIM dl AS LONG
   dl=unsigned&(d%)
   hr=RightShift%(dl,11) AND (&h1f)
   IF hr < 10 THEN
      hr$="0"+ltrim$(str$(hr))
   ELSE
      hr$=ltrim$(str$(hr))
   END IF
   mt=(RightShift%(dl,5) AND (&h3f))
   IF mt < 10 THEN
      mt$="0"+ltrim$(str$(mt))
   ELSE
      mt$=ltrim$(str$(mt))
   END IF
   wtime$=ltrim$(hr$)+":"+mt$+string$(5,32)
END FUNCTION

FUNCTION FileType$(attr)
  SELECT CASE attr
     CASE 0
        FileType$="Normal File"
     CASE 1
        FileType$="Read-Only File"
     CASE 2
        FileType$="Hidden File"
     CASE 4
        FileType$="System File"
     CASE &h10
        FileType$="Subdirectory"
     CASE &h20
        FileType$="File Archive"
     CASE ELSE
        FileType$="Unknown Type"
  END SELECT
END FUNCTION

FUNCTION RightShift%(number&,amount)
   Rightshift=number&\2^amount
END FUNCTION

FUNCTION LeftShift%(number&,amount)
  LeftShift=number&*(2^amount)
END FUNCTION

FUNCTION unsigned&(num)
   IF num >=0 THEN
      unsigned&=num
   ELSE
      unsigned&=65536+num
   END IF
END FUNCTION

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.