/* This file is part of BOP. Copyright (C) 2004 Patrick Davalan 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 The GNU General Public License text is also available at http://www.gnu.org/ or on the Copyright holder web site : http://patrick.davalan.free.fr/gnu-gpl.html */ #define DEBUG 0 // change the include to #include <bop.2/bop.h> # include "bop.h" // // Filter : read stdin and write stdout // Reverse lines of stdin using a extended stack // don't replicate identical lines, print only the // first which appears in input // // May be used to understand the Bop API, and test it // especially extended stack functions // // Lines which have a length > BOP_BUFSIZE are silently truncated. // # define BOP_BUFSIZE 4096 int main() { BopsHandle * stack ; BopsEntry * entry ; char buffer[ BOP_BUFSIZE ] ; bopmTrace( ) ; // create a stack stack = bopsNew( NULL, "extended stack", 4, 3 ) ; // the sizes are just for test // make it an extended stack bopsXSet( stack ) ; // for each line of the input file, push it on the stack for ( ; fgets( buffer, BOP_BUFSIZE, stdin ) != NULL ; ) { size_t len = 0 ; char * line ; len = strlen(buffer) ; *( buffer + len - 1 ) = 0 ; // erase \n // alloc and fill the line line =bopmMalloc( len ) ; memcpy( line, buffer, len ) ; // bopdTrace("line :%s\n", line ) ; // push the line onto the stack entry = bopsXPush( stack, line, len ) ; if ( entry != NULL ) { bopmFree( line ) ; } } bopdTrace("End of file\n" ) ; // pop the stack and write popped entries to stdout for ( ; ( entry = bopsPop( stack ) ) != NULL ; ) { void * data ; data = bopsGetData( entry ) ; puts( data ) ; bopmFree( data ) ; } bopsDelete( NULL, stack ) ; bopmMem( ) ; return( EXIT_SUCCESS ) ; }