From 77e3814f0c0e3dea4d0032e25666f77e6f83bfff Mon Sep 17 00:00:00 2001
From: cgd <cgd@NetBSD.org>
Date: Sun, 21 Mar 1993 09:45:37 +0000
Subject: initial import of 386bsd-0.1 sources

---
 larn/fortune.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 larn/fortune.c

(limited to 'larn/fortune.c')

diff --git a/larn/fortune.c b/larn/fortune.c
new file mode 100644
index 00000000..f410375d
--- /dev/null
+++ b/larn/fortune.c
@@ -0,0 +1,63 @@
+/* fortune.c		 Larn is copyrighted 1986 by Noah Morgan. */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "header.h"
+/*
+ *	function to return a random fortune from the fortune file
+ */
+static char *base=0;	/* pointer to the fortune text */
+static char **flines=0;	/* array of pointers to each fortune */
+static int fd=0;		/* true if we have load the fortune info */
+static int nlines=0;	/* # lines in fortune database */
+
+char *fortune(file)
+	char *file;
+	{
+	register char *p;
+	register int lines,tmp;
+	struct stat stat;
+	char *malloc();
+	if (fd==0)
+		{
+		if ((fd=open(file,O_RDONLY)) < 0)	/* open the file */
+			return(0); /* can't find file */
+
+	/* find out how big fortune file is and get memory for it */
+		stat.st_size = 16384;
+		if ((fstat(fd,&stat) < 0) || ((base=malloc(1+stat.st_size)) == 0))
+			{
+			close(fd); fd= -1; free((char*)base); return(0); 	/* can't stat file */
+			}
+
+	/* read in the entire fortune file */
+		if (read(fd,base,stat.st_size) != stat.st_size)
+			{
+			close(fd); fd= -1; free((char*)base); return(0); 	/* can't read file */
+			}
+		close(fd);  base[stat.st_size]=0;	/* final NULL termination */
+
+	/* count up all the lines (and NULL terminate) to know memory needs */
+		for (p=base,lines=0; p<base+stat.st_size; p++) /* count lines */
+			if (*p == '\n') *p=0,lines++;
+		nlines = lines;
+
+	/* get memory for array of pointers to each fortune */
+		if ((flines=(char**)malloc(nlines*sizeof(char*))) == 0)
+			{
+			free((char*)base); fd= -1; return(0); /* malloc() failure */
+			}
+
+	/* now assign each pointer to a line */
+		for (p=base,tmp=0; tmp<nlines; tmp++)
+			{
+			flines[tmp]=p;  while (*p++); /* advance to next line */
+			}
+		}
+
+	if (fd > 2)	/* if we have a database to look at */
+		return(flines[rund((nlines<=0)?1:nlines)]);
+	else 
+		return(0);
+	}
-- 
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