Power-Programmierung/CD1.mdf/basic/library/pb/library4/ttdir105.bas

BASIC Source File | 1990-11-24 | 6KB | 187 lines

$COMPILE UNIT
$INCLUDE "REGNAMES.INC"

'
' ┌─────────────────────────────────────────────────────────────────────┐
' │                                                                     │
' │ Function Name:  GetDirectory                                        │
' │ Date.........:  90/11/16                                            │
' │                                                                     │
' │ Description..:  Reads the directory specified by the user and       │
' │                 returns an array of the files found.                │
' │                                                                     │
' └─────────────────────────────────────────────────────────────────────┘
'
'   Modified.....:  90/11/23
'
'                   1.01 - Changed the return of the complete
'                          directory in FileFound$ to the filename,
'                          attribute, date and time to separate
'                          fields.
'
'                   1.02 - Changed the calculation for the number of
'                          files. I did a direct calc outside the loop
'                          instead of incrementing a counter within
'                          the loop.
'
'                   1.03 - Fixed the portion that calculated the file
'                          size. I used the wrong type of 'peek'
'                          function and the maximum size it returned
'                          was 65,535.
'
'                   1.04 - Passed file string information in one
'                          string and date/time information in one
'                          array.
'
'                   1.05 - Moved the DOS call to get the DTA address.
'                          The program only needs to find out the
'                          address once!
'

SUB GetDirectory(Path$, FileInfo$(), FIDate%(), FISize&(), NumFiles%) LOCAL PUBLIC

'  The parameters for the sub-routine are as follows:
'
'        Path$            - The file path
'
'
'        FileInfo$(r,c)   - The files found.  A string array with up
'                           to 'r' number of elements with 'c'
'                           columns.  Column 1 is the file name.
'                           Column 2 is the file extension and column
'                           3 is the attributes of the file.
'
'
'
'        FIDate%(r,c)    - The Date and time for each file found. This
'                          is a two dimensional array.  The number of
'                          rows ('r') must be the same as for the
'                          FileInfo$ field.  The number of columns
'                          ('c') must be six (For Year, Month, Day,
'                          Hour, Minute, Second)
'
'        FISize&(r)     -  The size in bytes of each file.
'
'        NumFiles%       - The number of files found in the directory
'                          specified by PATH$
'
'

LOCAL A%
LOCAL CDHiB%
LOCAL CDLowB%
LOCAL CDMidB%
LOCAL CTHiB%
LOCAL CTLowB%
LOCAL CTMidB%
LOCAL DTAAttr&
LOCAL DTADate&
LOCAL DTAOFS&
LOCAL DTASEG&
LOCAL DTASize&
LOCAL DTATime&
LOCAL FDate%
LOCAL FF$
LOCAL FTHour%
LOCAL FTime%
LOCAL LowB%
LOCAL UpprB%

'
' Get the lower and upper bound for all of the arrays used.  I am assuming
' that all arrays are defined with the same lower and upper bound ranges.
'

  LowB%  = LBOUND(FileInfo$(1))
  UpprB% = UBOUND(FileInfo$(1))

  CDLowB%    = LBOUND(FIDate%(2))
  CDMidB%    = CDLowB% + 1%
  CDHiB%     = CDLowB% + 2%

  CTLowB%    = CDLowB% + 3%
  CTMidB%    = CDMidB% + 3%
  CTHiB%     = CDHiB%  + 3%

  FF$ = DIR$(Path$, 55%)

'
'   Make a call to get the DTA on the file just read in.  I moved this code
'   to outside the loop as I only have to get the address once!
'
  REG %AX, &H2F00
  CALL INTERRUPT &H21

  DTASEG& = REG(%ES)
  DTAOFS& = REG(%BX)
  DTAAttr& = DTAOFS& + 21
  DTASize& = DTAOFS& + 26
  DTADate& = DTAOFS& + 24
  DTATIME& = DTAOFS& + 22

  DO WHILE (LEN(FF$) > 0%  AND  LowB% <= UpprB%)

    DEF SEG = DTASEG&
      A%             =  PEEK(DTAAttr&)
      FISize&(LowB%) = PEEKL(DTASize&)
      FDate%         = PEEKI(DTADate&)
      FTime%         = PEEKI(DTATime&)
    DEF SEG

    FileInfo$(LowB%, 1) = FF$
    FileInfo$(LowB%, 2) = " "
    X% = INSTR(FF$, ".")
    IF X% > 0 THEN
      FileInfo$(LowB%, 1) = MID$(FF$, 1, X%-1)
      FileInfo$(LowB%, 2) = MID$(FF$, X%+1)
    END IF

    FileInfo$(LowB%, 3%) = "....."
    IF (A% AND 32%) THEN
      MID$(FileInfo$(LowB%, 3%), 4, 1) = "A"
    END IF

    IF (A% AND 16%) THEN
      MID$(FileInfo$(LowB%, 3%), 5, 1) = "D"
    END IF

    IF (A% AND 4%) THEN
      MID$(FileInfo$(LowB%, 3%), 1, 1) = "S"
    END IF

    IF (A% AND 2%) THEN
      MID$(FileInfo$(LowB%, 3%), 2, 1) = "H"
    END IF

    IF (A% AND 1%) THEN
      MID$(FileInfo$(LowB%, 3%), 3, 1) = "R"
    END IF

    FIDate%(LowB%, CTLowB%) = FTime% \ 2048%           ' Hours
    IF FIDate%(LowB%, CTLowB%) < 0% THEN
      INCR FIDate%(LowB%, CTLowB%), 31%                ' Fix for some P.M. hours
    END IF

    FIDate%(LowB%, CTMidB%) = (FTime% AND 2047%) \ 32% ' Minutes
    FIDate%(LowB%, CTHiB%)  = FTime% AND 31%           ' Seconds

    FIDate%(LowB%, CDLowB%) = (FDate% \ 512%) + 80%    ' Year
    FIDate%(LowB%, CDMidB%) = (Fdate% AND 511%) \ 32%  ' Month
    FIDate%(LowB%, CDHiB%)  = FDate% AND 31%           ' Day

    INCR LowB%, 1

'
'   If not the last entry in the array read another directory entry.
'

    IF LowB% <= UpprB% THEN
      FF$ = DIR$
    END IF
  WEND

  NumFiles% = LowB% - LBOUND(FileInfo$(1))            ' Calculate number of
                                                      ' files found.

END SUB