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Prepare.c
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1993-10-22
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/* --------------------------------- -------
* |\ | | | | | |.| | \| |/ /|\ |||||||
* | | | |/ | |\ |/ |/| |\ |/ | ? ---+--- =<
* | | | | | | | | | | | \qqqqqqqqq/
* --------------------------------- ~~~~~~~~~~~~~~~~
* Prepare - Splits text files into words
* Copyright (C) 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: Prepare.c,v 37.4 93/03/01 12:55:03 Torsten Rel $
* $Log: Prepare.c,v $
* Revision 37.4 93/03/01 12:55:03 Torsten
* Changed all occurrences of "struct DosBase *" to "struct DosLibrary *"
*
* Revision 37.3 93/02/24 16:56:39 Torsten
* Added HYPHEN switch. When given hyphenated compounds will be
* considered one word.
*
* Revision 37.2 93/02/24 11:56:44 Torsten
* Can fold characters to lower or upper case.
*
* Revision 37.1 93/02/24 00:27:26 Torsten
* initial revision.
*
*/
#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>
#ifdef __SASC
#include <pragmas/dos_pragmas.h>
#include <pragmas/exec_pragmas.h>
#endif
#include "tastlib.h"
#include "prepare_rev.h"
#define PROGNAME "Prepare"
#define TEMPLATE "FROM/M,TO/K,TOLOWER/S,TOUPPER/S,HYPHEN/S"
#define OPT_FROM 0
#define OPT_TO 1
#define OPT_LOWER 2
#define OPT_UPPER 3
#define OPT_HYPH 4
char const versionID[] = VERSTAG;
char const copyright[] = "$COPYRIGHT:Copyright © 1993 Torsten Poulin$";
typedef struct {
struct DosLibrary *DOSBase;
BOOL tolower;
BOOL toupper;
BOOL hyphen;
BPTR output;
} Global;
LONG prepare(UBYTE *filename, Global *global);
LONG entrypoint(VOID)
{
struct DosLibrary *DOSBase;
struct RDArgs *args;
Global *global;
LONG arg[5];
LONG rc = RETURN_OK;
if (!(DOSBase = (struct DosLibrary *) OpenLibrary("dos.library", 37L)))
return RETURN_FAIL;
if (!(global = AllocVec(sizeof(Global), MEMF_PUBLIC | MEMF_CLEAR)))
{
PrintFault(ERROR_NO_FREE_STORE, PROGNAME);
rc = RETURN_FAIL;
}
else
{
global->DOSBase = DOSBase;
arg[OPT_FROM] = arg[OPT_TO] =
arg[OPT_LOWER] = arg[OPT_UPPER] = arg[OPT_HYPH] = 0L;
if (!(args = ReadArgs(TEMPLATE, arg, NULL)))
{
printerror(PROGNAME, global);
rc = RETURN_ERROR;
}
else
{
global->hyphen = (BOOL) arg[OPT_HYPH];
global->tolower = (BOOL) arg[OPT_LOWER];
global->toupper = (BOOL) arg[OPT_UPPER];
if (global->tolower && global->toupper)
{
PutStr("TOLOWER and TOUPPER are mutually exclusive\n");
rc = RETURN_ERROR;
}
else
{
if (!arg[OPT_TO])
global->output = Output();
else if (!(global->output=Open((UBYTE *)arg[OPT_TO], MODE_NEWFILE)))
{
PutStr("Cannot open ");
PutStr((UBYTE *) arg[OPT_TO]);
PutStr("\n");
rc = RETURN_ERROR;
}
if (global->output)
if (!arg[OPT_FROM])
rc = prepare(NULL, global);
else
rc = foreach((UBYTE **) arg[OPT_FROM], prepare, global);
if (arg[OPT_TO])
Close(global->output);
}
FreeArgs(args);
if (rc == ERROR_BREAK)
{
PrintFault(ERROR_BREAK, NULL);
rc = RETURN_WARN;
}
else if (rc == ERROR_NO_FREE_STORE)
{
PrintFault(ERROR_NO_FREE_STORE, PROGNAME);
rc = RETURN_FAIL;
}
else if (rc != RETURN_OK)
printerror(PROGNAME, global);
}
FreeVec(global);
}
CloseLibrary((struct Library *) DOSBase);
return rc;
}
/*
* Valid only for the ISO Latin 1 character set.
*/
BOOL isletter(LONG c)
{
return ((c>='A' && c<='Z') || (c>='a' && c<='z') || (c>=0xC0 && c<=0xFF))
&& c != 0xD7 && c != 0xF7;
}
LONG prepare(UBYTE *filename, Global *global)
{
struct DosLibrary *DOSBase = global->DOSBase;
register UBYTE breakcheck = 0;
LONG c;
BOOL inword = FALSE;
LONG rc = RETURN_OK;
BPTR input = Input();
if (filename)
if (!(input = Open(filename, MODE_OLDFILE)))
{
PutStr("Cannot open ");
printerror(filename, global);
return RETURN_ERROR;
}
while ((c = FGetC(input)) != EOF)
{
if (isletter(c))
{
inword = TRUE;
if (global->tolower && c != 0xDF)
c |= 0x20;
else if (global->toupper && c!= 0xFF)
c &= ~0x20;
FPutC(global->output, c);
}
else if (inword)
{
if (c == '\'')
{
/* Don't strip an in-word apostrophe */
c = FGetC(input);
if (isletter(c))
FPutC(global->output, '\'');
UnGetC(input, c);
}
else if (global->hyphen && c == '-')
{
/* Don't strip a hyphen */
c = FGetC(input);
if (isletter(c))
FPutC(global->output, '-');
UnGetC(input, c);
}
else
{
inword = FALSE;
FPutC(global->output, '\n');
}
}
if (!(breakcheck -= 4) && CheckSignal(SIGBREAKF_CTRL_C))
{
rc = ERROR_BREAK;
break;
}
}
if (filename)
Close(input);
return rc;
}