-/*
- * Copyright (C) 1994, Index Data I/S
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: agrep.c,v $
- * Revision 1.2 1994-09-26 16:30:56 adam
- * Minor changes. imalloc uses xmalloc now.
- *
- * Revision 1.1 1994/09/26 10:16:52 adam
- * First version of dfa module in alex. This version uses yacc to parse
- * regular expressions. This should be hand-made instead.
- *
- */
+/* $Id: agrep.c,v 1.18 2006-08-14 10:40:08 adam Exp $
+ Copyright (C) 1995-2006
+ Index Data ApS
+
+This file is part of the Zebra server.
+
+Zebra 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, or (at your option) any later
+version.
+
+Zebra 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+*/
+
+
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
-#include <unistd.h>
+#ifdef WIN32
+#include <io.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
-#include <util.h>
+#include <idzebra/util.h>
#include <dfa.h>
#include "imalloc.h"
static char *prog;
-void error( const char *format, ... )
+void error (const char *format, ...)
{
va_list argptr;
- va_start( argptr, format );
- fprintf( stderr, "%s error: ", prog );
- (void) vfprintf( stderr, format, argptr );
- putc( '\n', stderr );
- exit( 1 );
+ va_start (argptr, format);
+ fprintf (stderr, "%s error: ", prog);
+ (void) vfprintf (stderr, format, argptr);
+ putc ('\n', stderr);
+ exit (1);
}
-#ifdef YYDEBUG
-#ifdef YACC
-extern int yydebug;
-#else
-extern int alexdebug;
-#endif
-#endif
-
static int show_lines = 0;
-int agrep_options( argc, argv )
+int agrep_options (argc, argv)
int argc;
char **argv;
{
- while( --argc > 0 )
- if( **++argv == '-' )
- while( *++*argv )
+ while (--argc > 0)
+ if (**++argv == '-')
+ while (*++*argv)
{
- switch( **argv )
+ switch (**argv)
{
case 'V':
- fprintf( stderr, "%s: %s %s\n", prog, __DATE__, __TIME__ );
+ fprintf (stderr, "%s: %s %s\n", prog, __DATE__, __TIME__);
continue;
case 'v':
dfa_verbose = 1;
case 'n':
show_lines = 1;
continue;
-#ifdef YYDEBUG
- case 't':
-#ifdef YACC
- yydebug = 1;
-#else
- alexdebug = 1;
-#endif
- continue;
-#endif
case 'd':
- switch( *++*argv )
+ switch (*++*argv)
{
case 's':
debug_dfa_tran = 1;
}
continue;
default:
- fprintf( stderr, "%s: unknown option `-%s'\n", prog, *argv );
+ fprintf (stderr, "%s: unknown option `-%s'\n", prog, *argv);
return 1;
}
break;
static char *inf_ptr, *inf_flsh;
static int inf_eof, line_no;
-static int inf_flush( fd )
+static int inf_flush (fd)
int fd;
{
char *p;
unsigned b, r;
r = (unsigned) (inf_buf+INF_BUF_SIZE - inf_ptr); /* no of `wrap' bytes */
- if( r )
- memcpy( inf_buf, inf_ptr, r );
+ if (r)
+ memcpy (inf_buf, inf_ptr, r);
inf_ptr = p = inf_buf + r;
b = INF_BUF_SIZE - r;
do
- if( (r = read( fd, p, b ) ) == (unsigned) -1 )
+ if ((r = read (fd, p, b)) == (unsigned) -1)
return -1;
- else if( r )
+ else if (r)
p += r;
else
{
inf_eof = 1;
break;
}
- while( (b -= r) > 0 );
- while( p != inf_buf && *--p != '\n' )
+ while ((b -= r) > 0);
+ while (p != inf_buf && *--p != '\n')
;
- while( p != inf_buf && *--p != '\n' )
+ while (p != inf_buf && *--p != '\n')
;
inf_flsh = p+1;
return 0;
}
-static char *prline( p )
+static char *prline (p)
char *p;
{
char *p0;
--p;
- while( p != inf_buf && p[-1] != '\n' )
+ while (p != inf_buf && p[-1] != '\n')
--p;
p0 = p;
- while( *p++ != '\n' )
+ while (*p++ != '\n')
;
p[-1] = '\0';
- if( show_lines )
- printf( "%5d:\t%s\n", line_no, p0 );
+ if (show_lines)
+ printf ("%5d:\t%s\n", line_no, p0);
else
- puts( p0 );
+ puts (p0);
p[-1] = '\n';
return p;
}
-static int go( fd, dfaar )
+static int go (fd, dfaar)
int fd;
-DFA_state **dfaar;
+struct DFA_state **dfaar;
{
- DFA_state *s = dfaar[0];
- DFA_tran *t;
+ struct DFA_state *s = dfaar[0];
+ struct DFA_tran *t;
char *p;
int i;
unsigned char c;
+ int start_line = 1;
- while( 1 )
+ while (1)
{
- for( c = *inf_ptr++, t=s->trans, i=s->tran_no; --i >= 0; t++ )
- if( c >= t->ch[0] && c <= t->ch[1] )
+ for (c = *inf_ptr++, t=s->trans, i=s->tran_no; --i >= 0; t++)
+ if (c >= t->ch[0] && c <= t->ch[1])
{
p = inf_ptr;
do
{
- if( (s = dfaar[t->to] )->rule_no )
+ if ((s = dfaar[t->to])->rule_no &&
+ (start_line || s->rule_nno))
{
- inf_ptr = prline( inf_ptr );
+ inf_ptr = prline (inf_ptr);
c = '\n';
break;
}
- for( t=s->trans, i=s->tran_no; --i >= 0; t++ )
- if( (unsigned) *p >= t->ch[0]
- && (unsigned) *p <= t->ch[1] )
+ for (t=s->trans, i=s->tran_no; --i >= 0; t++)
+ if ((unsigned) *p >= t->ch[0]
+ && (unsigned) *p <= t->ch[1])
break;
p++;
- } while( i >= 0 );
+ } while (i >= 0);
s = dfaar[0];
break;
}
- if( c == '\n' )
+ if (c == '\n')
{
+ start_line = 1;
++line_no;
- if( inf_ptr == inf_flsh )
+ if (inf_ptr == inf_flsh)
{
- if( inf_eof )
+ if (inf_eof)
break;
++line_no;
- if( inf_flush( fd ) )
+ if (inf_flush (fd))
{
- fprintf( stderr, "%s: read error\n", prog );
+ fprintf (stderr, "%s: read error\n", prog);
return -1;
}
}
}
+ else
+ start_line = 0;
}
return 0;
}
-int agrep( dfas, fd )
-DFA_states *dfas;
+int agrep (dfas, fd)
+struct DFA_state **dfas;
int fd;
{
- inf_buf = imalloc( sizeof(char)*INF_BUF_SIZE );
+ inf_buf = imalloc (sizeof(char)*INF_BUF_SIZE);
inf_eof = 0;
inf_ptr = inf_buf+INF_BUF_SIZE;
- inf_flush( fd );
+ inf_flush (fd);
line_no = 1;
- go( fd, dfas->sortarray);
+ go (fd, dfas);
- ifree( inf_buf );
+ ifree (inf_buf);
return 0;
}
-int main( argc, argv )
+int main (argc, argv)
int argc;
char **argv;
{
- char *pattern = NULL;
+ const char *pattern = NULL;
char outbuf[BUFSIZ];
int fd, i, no = 0;
- DFA *dfa = init_dfa();
- DFA_states *dfas;
+ struct DFA *dfa = dfa_init();
prog = *argv;
-#ifdef YYDEBUG
-#ifdef YACC
- yydebug = 0;
-#else
- alexdebug = 0;
-#endif
-#endif
- setbuf( stdout, outbuf );
- i = agrep_options( argc, argv );
- if( i )
+ if (argc < 2)
+ {
+ fprintf (stderr, "usage: agrep [options] pattern file..\n");
+ fprintf (stderr, " -v dfa verbose\n");
+ fprintf (stderr, " -n show lines\n");
+ fprintf (stderr, " -d debug\n");
+ fprintf (stderr, " -V show version\n");
+ exit (1);
+ }
+ setbuf (stdout, outbuf);
+ i = agrep_options (argc, argv);
+ if (i)
return i;
- while( --argc > 0 )
- if( **++argv != '-' && **argv )
- if( !pattern )
+ while (--argc > 0)
+ if (**++argv != '-' && **argv)
+ {
+ if (!pattern)
{
pattern = *argv;
- i = parse_dfa( dfa, &pattern, dfa_thompson_chars );
- if( i || *pattern )
+ i = dfa_parse (dfa, &pattern);
+ if (i || *pattern)
{
- fprintf( stderr, "%s: illegal pattern\n", prog );
+ fprintf (stderr, "%s: illegal pattern\n", prog);
return 1;
}
- dfa->root = dfa->top;
- dfas = mk_dfas( dfa, 200 );
- rm_dfa( &dfa );
+ dfa_mkstate (dfa);
}
else
{
++no;
- fd = open( *argv, O_RDONLY | O_BINARY);
- if( fd == -1 )
+ fd = open (*argv, O_RDONLY | O_BINARY);
+ if (fd == -1)
{
- fprintf( stderr, "%s: couldn't open `%s'\n", prog, *argv );
+ fprintf (stderr, "%s: couldn't open `%s'\n", prog, *argv);
return 1;
}
- i = agrep( dfas, fd );
- close( fd );
- if( i )
+ i = agrep (dfa->states, fd);
+ close (fd);
+ if (i)
return i;
}
- if( !no )
+ }
+ if (!no)
{
- fprintf( stderr, "%s: no files specified\n", prog );
+ fprintf (stderr, "usage:\n "
+ " %s [-d] [-v] [-n] [-f] pattern file ..\n", prog);
return 2;
}
fflush(stdout);
+ dfa_delete (&dfa);
return 0;
}
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+
projects / idzebra-moved-to-github.git / blobdiff