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/**
* \file addcrlf.c Convert text between DOS, UNIX and MAC
*
* $Header: /home/dmarkle/xtrkcad-fork-cvs/xtrkcad/app/tools/addcrlf.c,v 1.7 2007-02-13 19:46:25 m_fischer Exp $
*
* This is heavily based on flip by Craig Stuart Sapp <craig@ccrma.stanford.edu>
* Web Address: http://www-ccrma.stanford.edu/~craig/utility/flip/flip.cpp
*/
/* XTrkCad - Model Railroad CAD
* Copyright (C) Marin Fischer 2006
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <stdio.h>
void exitUsage( char *cmd );
void translateToDos( char *infile, char *outfile );
void translateToUnix(char* infilename, char *outfilename);
void determineType(char* filename);
int
main( int argc, char ** argv)
{
char option;
if( argc < 2 )
exitUsage(argv[0]);
if( argv[1][0] != '-' &&argv[1][0] != '/' )
exitUsage(argv[0]);
option = argv[1][1];
if (!(option == 'u' || option == 'd' || option == 't' || option =='h' )) {
exitUsage(argv[0]);
}
if( !((option == 't' && argc == 3)||(option !='t' && argc==4)||( option =='h' ))) {
exitUsage(argv[0]);
}
switch( option )
{
case 'd':
translateToDos(argv[2], argv[3]);
break;
case 'u':
translateToUnix(argv[2], argv[3]);
break;
case 'm':
/* translateToMacintosh(argv[i+2]); */
break;
case 'h':
exitUsage(argv[0]);
break;
default:
determineType(argv[2]);
break;
}
return 0;
}
void
translateToDos(char* infilename, char *outfilename)
{
FILE *in, *out;
char ch, lastch;
int peekch;
in = fopen( infilename, "rb" );
if (!in) {
printf( "Error: cannot find file: %s\n", infilename );
return;
}
out = fopen( outfilename, "wb" );
if (!out) {
printf( "Error: cannot open file: %s\n", outfilename );
return;
}
ch = getc( in );
lastch = ch;
while( !feof( in ))
{
if (ch == 0x0a && lastch != 0x0d) {
// convert newline from Unix to MS-DOS
putc( (char)0x0d, out );
putc( ch, out );
lastch = ch;
} else {
if (ch == 0x0d) { // convert newline from Mac to MS-DOS
peekch = getc( in ); // lookahead for following character
ungetc( peekch, in );
if (peekch != 0x0a) {
putc( ch, out );
putc( (char)0x0a, out );
lastch = 0x0a;
} else {
lastch = 0x0d;
// Bug fix here reported by Shelley Adams: running -d
// twice in a row was generating Unix style newlines
// without the following statement:
putc( 0x0d, out );
}
} else {
putc( ch, out );
lastch = ch;
}
}
ch = getc( in );
}
fclose( in );
fclose( out );
}
void
translateToUnix(char* infilename, char *outfilename)
{
FILE *in, *out;
char ch, lastch;
in = fopen( infilename, "rb" );
if (!in) {
printf( "Error: cannot find file: %s\n", infilename );
return;
}
out = fopen( outfilename, "wb" );
if (!out) {
printf( "Error: cannot open file: %s\n", outfilename );
return;
}
ch = getc( in );
lastch = ch;
while( !feof( in ))
{
if (ch == 0x0d) {
putc( (char)0x0a, out );
} else {
if (ch == 0x0a) {
if (lastch == 0x0d) {
// do nothing: already converted MSDOS newline to Unix form
} else {
putc( (char)0x0a, out );
}
} else {
putc( ch, out );
}
}
lastch = ch;
ch = getc( in );
}
fclose( in );
fclose( out );
}
void
determineType(char* filename)
{
FILE *in;
int ch;
int crcount = 0;
int lfcount = 0;
in = fopen( filename, "rb" );
if (!in) {
printf( "Error: cannot find file: %s\n", filename );
return;
}
ch = getc( in );
if( ch == EOF ) {
printf( "Error: file could not be read: %s\n", filename );
return;
}
while( !feof( in ))
{
if (ch == 0x0d) {
crcount ++;
} else {
if (ch == 0x0a) {
lfcount++;
}
}
ch = getc( in );
}
fclose( in );
if ((lfcount == crcount) && (crcount != 0)) {
printf("%s : DOS\n", filename );
} else if ((lfcount > 0) && (crcount == 0)) {
printf("%s : UNIX\n", filename );
} else if ((lfcount == 0) && (crcount > 0)) {
printf("%s : MAC\n", filename );
} else if ((lfcount > 0) && (crcount > 0)) {
printf("%s : MIXED\n", filename );
} else {
printf("%s : UNKNOWN\n", filename );
}
}
void
exitUsage( char* commandName )
{
printf( "\nUsage: %s [-h] | [-t infile] | [[-u|-d|-m] infile outfile]\n"
" Converts an ASCII file between Unix, MS-DOS/Windows, or Macintosh newline formats\n\n"
" Options: \n"
" -u = convert file to Unix newline format (newline)\n"
" -d = convert file to MS-DOS/Windows newline format (linefeed + newline)\n"
" -m = convert file to Macintosh newline format (linefeed)\n"
" -t = display current file type, no file modifications\n"
" -h = show this help\n",
commandName );
exit(1);
}
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