From a69b8cc7ed8f28b530d3d5087be03220b27fad18 Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Wed, 3 Jan 2007 21:51:11 +0000
Subject: [PATCH]   * Added a stupid PRNG to streamcat and fdcat.   * Do not
 use sed in the testsuite, because of OS X.

---
 test/fdcat.c      | 20 ++++++++++++++------
 test/streamcat.c  | 18 +++++++++++++-----
 test/testsuite.sh |  4 +++-
 3 files changed, 30 insertions(+), 12 deletions(-)

diff --git a/test/fdcat.c b/test/fdcat.c
index 8b4c9d3..669dd2d 100644
--- a/test/fdcat.c
+++ b/test/fdcat.c
@@ -24,14 +24,22 @@
 #include <stdio.h>
 #include <string.h>
 
+static inline int myrand(void)
+{
+    static int seed = 1;
+    int x, y;
+    x = (seed + 0x12345678) << 11;
+    y = (seed + 0xfedcba98) >> 21;
+    seed = x * 1010101 + y * 343434;
+    return seed;
+}
+
 int main(int argc, char *argv[])
 {
     long int pos;
     unsigned char *data;
     int i, j, fd;
 
-    srand(0);
-
     if(argc != 2)
         return EXIT_FAILURE;
 
@@ -51,13 +59,13 @@ int main(int argc, char *argv[])
     /* Read shit here and there */
     for(i = 0; i < 128; i++)
     {
-        lseek(fd, rand() % pos, SEEK_SET);
+        lseek(fd, myrand() % pos, SEEK_SET);
         for(j = 0; j < 16; j++)
-            read(fd, data + lseek(fd, 0, SEEK_CUR), rand() % 4096);
+            read(fd, data + lseek(fd, 0, SEEK_CUR), myrand() % 4096);
 #ifdef HAVE_LSEEK64
-        lseek64(fd, rand() % pos, SEEK_SET);
+        lseek64(fd, myrand() % pos, SEEK_SET);
         for(j = 0; j < 16; j++)
-            read(fd, data + lseek(fd, 0, SEEK_CUR), rand() % 4096);
+            read(fd, data + lseek(fd, 0, SEEK_CUR), myrand() % 4096);
 #endif
     }
 
diff --git a/test/streamcat.c b/test/streamcat.c
index 4b2977b..ce87ff6 100644
--- a/test/streamcat.c
+++ b/test/streamcat.c
@@ -18,6 +18,16 @@
 #include <stdlib.h>
 #include <string.h>
 
+static inline int myrand(void)
+{
+    static int seed = 1;
+    int x, y;
+    x = (seed + 0x12345678) << 11;
+    y = (seed + 0xfedcba98) >> 21;
+    seed = x * 1010101 + y * 343434;
+    return seed;
+}
+
 int main(int argc, char *argv[])
 {
     long int pos;
@@ -25,8 +35,6 @@ int main(int argc, char *argv[])
     int i, j;
     FILE *stream;
 
-    srand(0);
-
     if(argc != 2)
         return EXIT_FAILURE;
 
@@ -48,10 +56,10 @@ int main(int argc, char *argv[])
     for(i = 0; i < 128; i++)
     {
         long int now;
-        fseek(stream, rand() % pos, SEEK_SET);
+        fseek(stream, myrand() % pos, SEEK_SET);
         for(j = 0; j < 16; j++)
-            fread(data + ftell(stream), rand() % 4096, 1, stream);
-        fseek(stream, rand() % pos, SEEK_SET);
+            fread(data + ftell(stream), myrand() % 4096, 1, stream);
+        fseek(stream, myrand() % pos, SEEK_SET);
         now = ftell(stream);
         for(j = 0; j < 16; j++)
             data[now + j] = getc(stream);
diff --git a/test/testsuite.sh b/test/testsuite.sh
index 5bd0dfc..2c59706 100755
--- a/test/testsuite.sh
+++ b/test/testsuite.sh
@@ -69,7 +69,9 @@ for file in /tmp/zzuf-zero-$$ /tmp/zzuf-text-$$ /tmp/zzuf-random-$$; do
         # We don't include grep in the testsuite because it puts a newline
         # at the end of its input if it was not there initially.
         #check $seed $r "grep -- -a \\'\\' $file" "grep -a"
-        check $seed $r "-- sed -e n $file" "sed n"
+        # We don't include sed in the testsuite because on OS X in also
+        # puts a newline. Crap.
+        #check $seed $r "-- sed -e n $file" "sed n"
         check $seed $r "dd bs=65536 if=$file" "dd(bs=65536)"
         check $seed $r "dd bs=1111 if=$file" "dd(bs=1111)"
         check $seed $r "dd bs=1024 if=$file" "dd(bs=1024)"