Programma di esempio DEARC.PRT
; DEARC
;
; Programma per Proteus
;
; (C) 1998-2003 Simone Zanella Productions
;
; Questo programma estrae i file contenuti in un archivio creato con ARC.
; I file sono estratti nella directory corrente.

#!proteus -z

IF LT(ARGC, 5)
  CONSOLELN "Sintassi: " ARGV(1) " " ARGV(2) " <archivio>"
  ABORT 0
FI

H = FOPEN(ARGV(5), 1)
IF EQ(H, -1)
  CONSOLELN "Errore: impossibile aprire "  ARGV(5)
  ABORT 1
FI

ErrorNum = 0

WHILE NOT(FEOF(H))
  NameLen = ASC(FREAD(H, 1))
  IF FEOF(H)
    BREAK
  FI
  Name = FREAD(H, NameLen)
  SizeLen = ASC(FREAD(H, 1))
  Size = FREAD(H, SizeLen)

  HDest = FOPEN(Name, 26)
  CONSOLELN "Estrazione del file: " Name
  IF EQ(HDest, -1)
    CONSOLELN "Errore: impossibile creare/scrivere " Name
    FSEEK(H, Size, 1)
    INC(@ErrorNum)
  ELSE
    WHILE GT(Size, 0)
      L = FREAD(H, MIN(Size, 8192))
      FWRITE(HDest, L)
      SUB(@Size, STRLEN(L))
    LOOP
    FCLOSE(HDest)
  FI
LOOP
FCLOSE(H)
IF GT(ErrorNum, 0)
  CONSOLELN "Attenzione: alcuni file non sono stati estratti."
  ABORT 2
ELSE
  CONSOLELN "File " ARGV(5) " estratto correttamente."
FI
ABORT 0
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