Add count/not tools as executables.

- Apparently, I'm willing to do incredibly stupid things in the name of portability.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82685 91177308-0d34-0410-b5e6-96231b3b80d8

utils/count/CMakeLists.txt

@@ -0,0 +1,3 @@
+add_executable(count
+  count.c
+  )

utils/count/Makefile

@@ -0,0 +1,20 @@
+##===- utils/count/Makefile --------------------------------*- Makefile -*-===##
+# 
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+# 
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../..
+TOOLNAME = count
+USEDLIBS = 
+
+# This tool has no plugins, optimize startup time.
+TOOL_NO_EXPORTS = 1
+
+# Don't install this utility
+NO_INSTALL = 1
+
+include $(LEVEL)/Makefile.common

utils/count/count.c

@@ -0,0 +1,48 @@
+/*===- count.c - The 'count' testing tool ---------------------------------===*\
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+\*===----------------------------------------------------------------------===*/
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+  unsigned Count, NumLines, NumRead;
+  char Buffer[4096], *End;
+
+  if (argc != 2) {
+    fprintf(stderr, "usage: %s <expected line count>\n", argv[0]);
+    return 2;
+  }
+
+  Count = strtol(argv[1], &End, 10);
+  if (*End != '\0' && End != argv[1]) {
+    fprintf(stderr, "%s: invalid count argument '%s'\n", argv[0], argv[1]);
+    return 2;
+  }
+
+  NumLines = 0;
+  while ((NumRead = fread(Buffer, 1, sizeof(Buffer), stdin))) {
+    unsigned i;
+
+    for (i = 0; i != NumRead; ++i)
+      if (Buffer[i] == '\n')
+        ++NumLines;
+  }
+    
+  if (!feof(stdin)) {
+    fprintf(stderr, "%s: error reading stdin\n", argv[0]);
+    return 3;
+  }
+
+  if (Count != NumLines) {
+    fprintf(stderr, "Expected %d lines, got %d.\n", Count, NumLines);
+    return 1;
+  }
+
+  return 0;
+}