JPG Size

[Steve Bouffe]

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[Tom Hanlin]

Your code is already opening the file for read-only access.

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Tom Hanlin
PowerBASIC Staff

[Steve Bouffe]

I'm trying to use the function on a web server.

I's it possible to open the file in binary for read only as the directory
containging the jpg's is read only permission.

FUNCTION JPGDims( BYVAL File AS STRING ) EXPORT AS STRING
  LOCAL ErrCount AS INTEGER
  LOCAL LongLoop1 AS LONG
  LOCAL Lbuf AS LONG
  LOCAL Buf AS STRING
  LOCAL JPGy AS INTEGER
  LOCAL JPGx AS INTEGER
  LOCAL FileHan AS INTEGER
  FileHan = FREEFILE
  DO
    ON ERROR RESUME NEXT
    OPEN File FOR BINARY ACCESS READ AS FileHan
    IF ERR = 0 THEN EXIT DO
    INCR ErrCount
    IF ErrCount = 100 OR ERR = 53 THEN EXIT FUNCTION
    SLEEP 250
  LOOP
  lbuf = LOF( FileHan )
  GET$ FileHan, lbuf, buf
  CLOSE FileHan
  LongLoop1 = 0
  DO
    INCR LongLoop1
    IF ASC( buf, LongLoop1 ) = VAL( "&HFF" ) THEN
      IF ASC( buf, LongLoop1 + 1 ) = > VAL( "&HC0" ) AND ASC( buf, LongLoop1 + 1 ) < = VAL( "&HC3" ) THEN
        JPGy = ASC( buf, LongLoop1 + 5 ) * 256 + ASC( buf, LongLoop1 + 6 )
        JPGx = ASC( buf, LongLoop1 + 7 ) * 256 + ASC( buf, LongLoop1 + 8 )
        EXIT DO
      END IF
    END IF
  LOOP UNTIL LongLoop1 > lbuf - 10
  FUNCTION = TRIM$( STR$( JPGx )) + "/" + TRIM$( STR$( JPGy ))
END FUNCTION

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