X-Git-Url: http://jsfdemo.indexdata.com/?a=blobdiff_plain;f=dfa%2Fagrep.c;h=f63e7dabd5e6cb4632a84983f04ddabfbca6afa7;hb=82bdd90d99e036b5c491666b5be5471c59f8e1b8;hp=81835d084f1ce2c491e1479c75854a740952ede7;hpb=cf67c63195045b4ba4d535d8df5129732aab215d;p=idzebra-moved-to-github.git

diff --git a/dfa/agrep.c b/dfa/agrep.c
index 81835d0..f63e7da 100644
--- a/dfa/agrep.c
+++ b/dfa/agrep.c
@@ -4,7 +4,17 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: agrep.c,v $
- * Revision 1.6  1995-09-28 09:18:51  adam
+ * Revision 1.9  1996-10-29 13:57:18  adam
+ * Include of zebrautl.h instead of alexutil.h.
+ *
+ * Revision 1.8  1996/01/08 09:09:16  adam
+ * Function dfa_parse got 'const' string argument.
+ * New functions to define char mappings made public.
+ *
+ * Revision 1.7  1995/10/16  09:31:24  adam
+ * Bug fix.
+ *
+ * Revision 1.6  1995/09/28  09:18:51  adam
  * Removed various preprocessor defines.
  *
  * Revision 1.5  1995/09/04  12:33:25  adam
@@ -37,7 +47,7 @@
 #include <unistd.h>
 
 
-#include <alexutil.h>
+#include <zebrautl.h>
 #include <dfa.h>
 #include "imalloc.h"
 
@@ -171,6 +181,7 @@ struct DFA_state **dfaar;
     char *p;
     int i;
     unsigned char c;
+    int start_line = 1;
 
     while (1)
     {
@@ -180,7 +191,8 @@ struct DFA_state **dfaar;
                 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);
                         c = '\n';
@@ -197,6 +209,7 @@ struct DFA_state **dfaar;
             }
         if (c == '\n')
         {
+            start_line = 1;
             ++line_no;
             if (inf_ptr == inf_flsh)
             {
@@ -210,6 +223,8 @@ struct DFA_state **dfaar;
                 }
             }
         }
+        else
+            start_line = 0;
     }
     return 0;
 }
@@ -235,12 +250,21 @@ int main (argc, argv)
 int argc;
 char **argv;
 {
-    char *pattern = NULL;
+    const char *pattern = NULL;
     char outbuf[BUFSIZ];
     int fd, i, no = 0;
     struct DFA *dfa = dfa_init();
 
     prog = *argv;
+    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)
@@ -274,7 +298,8 @@ char **argv;
             }
     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);