BSD 3 development

Work on file usr/src/cmd/num.c

Co-Authored-By: Kirk McKusick <mckusick@ucbvax.Berkeley.EDU>
Synthesized-from: 3bsd

diff --git a/usr/src/cmd/num.c b/usr/src/cmd/num.c
new file mode 100644 (file)
index 0000000..03366e9
--- /dev/null
+++ b/usr/src/cmd/num.c
@@ -0,0 +1,57 @@
+#include       "stdio.h"
+#define                formfeed 0xc
+
+/*
+ * number - a cat like program which prints a file with line
+ *         numbers. Printing of numbers is suppressed on blank
+ *         lines.
+ *
+ * Original Version by William Joy, June 1977
+ * Updated October 1979 by M. Kirk McKusick
+ */
+main(ac, av)
+       int ac;
+       char *av[];
+       {
+       register int argc = ac;
+       register char **argv = av;
+       register int lino;
+       register char *lineptr;
+       register FILE *STDOUT = stdout;
+       register FILE *STDIN = stdin;
+       char line[512];
+       extern char _sibuf[], _sobuf[];
+
+       argv++;
+       argc--;
+       lino = 1;
+       setbuf(STDIN,_sibuf);
+       setbuf(STDOUT,_sobuf);
+       do
+               {
+               if (argc)
+                       if (freopen(*argv++, "r", STDIN) == NULL)
+                               {
+                               perror(*--argv);
+                               exit(1);
+                               }
+               for(;;)
+                       {
+                       lineptr = line;
+                       *lineptr = 0;
+                       fscanf(STDIN,"%[^\n]",lineptr);
+                       if (feof(STDIN))
+                               break;
+                       if (*lineptr == formfeed)
+                               putc(*lineptr++,STDOUT);
+                       if (!*lineptr)
+                               putc('\n',STDOUT);
+                       else
+                               fprintf(STDOUT,"%6d  %s\n",lino,lineptr);
+                       lino++;
+                       getc(STDIN);
+                       }
+               }
+               while (--argc > 0);
+       exit();
+       }