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- /*
- * Unique - Report repeated lines in input.
- * Copyright (C) 1989, 1992, 1993 Torsten Poulin
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * The author can be contacted by s-mail at
- * Torsten Poulin
- * Banebrinken 99, 2, 77
- * DK-2400 Copenhagen NV
- * DENMARK
- *
- * $Id: Unique.c,v 37.7 93/06/20 17:14:14 Torsten Rel $
- * $Log: Unique.c,v $
- * Revision 37.7 93/06/20 17:14:14 Torsten
- * SysBase removed.
- * Removed unsupported items from the template so as not
- * to confuse "lusers".
- *
- * Revision 37.6 93/03/01 12:31:13 Torsten
- * Changed all occurrences of "struct DosBase *" to "struct DosLibrary *"
- *
- * Revision 37.5 93/02/18 15:35:21 Torsten
- * Replaced explicit Stricmp() pragma and prototype with the
- * relevant include files.
- *
- * Revision 37.4 93/02/14 10:49:48 Torsten
- * Replaced exec.library/SetSignal() with dos.library/CheckSignal().
- * Fixed "line repeated more than once" bug.
- *
- */
-
- #include <exec/types.h>
- #include <exec/memory.h>
- #include <dos/dos.h>
- #include <dos/dosasl.h>
- #include <clib/dos_protos.h>
- #include <clib/exec_protos.h>
- #include <clib/utility_protos.h>
- #include <stdio.h>
- #include <string.h>
- #include "unique_rev.h"
-
- #ifdef __SASC
- #include <pragmas/dos_pragmas.h>
- #include <pragmas/exec_pragmas.h>
- #include <pragmas/utility_pragmas.h>
- #endif
-
- #define PROGNAME "Unique"
- #define MAXLINE (512+1)
- #define MAXNAME 50
- #define TEMPLATE "FROM,TO,REPEATED/S,UNIQUE=ONCE/S,COUNT/S"
-
- #define OPT_FROM 0
- #define OPT_TO 1
- #define OPT_REPEAT 2
- #define OPT_UNIQUE 3
- #define OPT_COUNT 4
-
- char const versionID[] = VERSTAG;
- char const copyright[] = "$COPYRIGHT:© 1989,1992,1993 Torsten Poulin$";
-
- static BOOL ioerr(struct DosLibrary *DOSBase);
- static LONG unique(struct DosLibrary *DOSBase,
- struct Library *UtilityBase, BPTR in, BPTR out,
- BOOL rflag, BOOL uflag, BOOL cflag);
-
- LONG entrypoint(VOID)
- {
- BPTR in, out;
- ULONG err;
- LONG rc = RETURN_OK;
-
- struct DosLibrary *DOSBase;
- struct Library *UtilityBase;
- struct RDArgs *args;
- LONG arg[5];
-
- if (!(DOSBase = (struct DosLibrary *) OpenLibrary("dos.library", 37L)))
- {
- rc = RETURN_FAIL;
- goto noDOS;
- }
- if (!(UtilityBase = OpenLibrary("utility.library", 37L)))
- {
- rc = RETURN_FAIL;
- goto noUtility;
- }
-
- arg[OPT_FROM] = arg[OPT_TO] =
- arg[OPT_REPEAT] = arg[OPT_UNIQUE] = arg[OPT_COUNT] = 0L;
-
- if (args = ReadArgs(TEMPLATE, arg, NULL))
- {
- if (arg[OPT_FROM])
- {
- if (!(in = Open((UBYTE *) arg[OPT_FROM], MODE_OLDFILE)))
- {
- err = IoErr();
- PrintFault(err, (UBYTE *) arg[OPT_FROM]);
- rc = RETURN_ERROR;
- goto errExit;
- }
- }
- else
- in = Input();
-
- if (arg[OPT_TO])
- {
- if (!(out = Open((UBYTE *) arg[OPT_TO], MODE_NEWFILE)))
- {
- err = IoErr();
- PrintFault(err, (UBYTE *) arg[OPT_TO]);
- rc = RETURN_ERROR;
- goto errExit;
- }
- }
- else
- out = Output();
-
- rc = unique(DOSBase, UtilityBase, in, out,
- (BOOL) arg[OPT_REPEAT],
- (BOOL) arg[OPT_UNIQUE],
- (BOOL) arg[OPT_COUNT]);
-
- if (arg[OPT_FROM])
- Close(in);
- if (arg[OPT_TO])
- Close(out);
-
- FreeArgs(args);
- }
- else
- {
- LONG err = IoErr();
- PrintFault(err, PROGNAME);
- rc = RETURN_ERROR;
- }
-
- errExit:
- CloseLibrary(UtilityBase);
- noUtility:
- CloseLibrary((struct Library *) DOSBase);
- noDOS:
- return rc;
- }
-
-
- static LONG unique(struct DosLibrary *DOSBase,
- struct Library *UtilityBase, BPTR in, BPTR out,
- BOOL rflag, BOOL uflag, BOOL cflag)
- {
- ULONG count;
- UBYTE prevline[MAXLINE];
- UBYTE nextline[MAXLINE];
- UBYTE *temp;
- UBYTE *prev = prevline;
- UBYTE *next = nextline;
-
- if (rflag && uflag)
- rflag = uflag = FALSE;
-
- count = 1;
- if (FGets(in, prev, MAXLINE) == NULL)
- {
- if (ioerr(DOSBase))
- return RETURN_FAIL;
- }
- else
- {
- while (FGets(in, next, MAXLINE) != NULL)
- {
-
- if (Stricmp(prev, next) == 0)
- ++count;
- else if ((!rflag && !uflag) ||
- (count >= 2 && !uflag) ||
- (count == 1 && uflag))
- {
- if (cflag)
- VFPrintf(out, "%10lu ", (LONG *) &count);
- FPuts(out, prev);
- count = 1;
- }
- else
- count = 1;
- temp = prev;
- prev = next;
- next = temp;
-
- if (CheckSignal(SIGBREAKF_CTRL_C))
- {
- PrintFault(ERROR_BREAK, NULL);
- return RETURN_WARN;
- }
- }
- if (ioerr(DOSBase))
- return RETURN_FAIL;
-
- if ((!rflag && !uflag) || (count >= 2 && !uflag)
- || (count == 1 && uflag))
- {
- if (cflag)
- VFPrintf(out, "%10lu ", (LONG *) &count);
- FPuts(out, prev);
- }
- }
- return RETURN_OK;
- }
-
-
- static BOOL ioerr(struct DosLibrary *DOSBase)
- {
- LONG err;
-
- if (!(err = IoErr()))
- return FALSE;
- PrintFault(err, PROGNAME);
- return TRUE;
- }
-