Initial checkin of gRPC to third_party/

third_party/grpc/src/core/support/string_posix.c

Index: third_party/grpc/src/core/support/string_posix.c
diff --git a/third_party/WebKit/Source/build/win/Precompile.h b/third_party/grpc/src/core/support/string_posix.c
similarity index 57%
copy from third_party/WebKit/Source/build/win/Precompile.h
copy to third_party/grpc/src/core/support/string_posix.c
index 8a0ff29c353fc1d30c92d27f369d7c422a579bc8..25c333db4edf0dce28ddc5f7401fd2008bf55830 100644
--- a/third_party/WebKit/Source/build/win/Precompile.h
+++ b/third_party/grpc/src/core/support/string_posix.c
@@ -1,5 +1,7 @@
 /*
- * Copyright (C) 2012 Google Inc. All rights reserved.
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -26,43 +28,59 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/*
- * Precompiled header for WebKit when built on Windows using
- * GYP-generated project files.  Not used by other build
- * configurations.
  *
- * Using precompiled headers speeds the build up significantly.  On a
- * fast machine (HP Z600, 12 GB of RAM), an ~18% decrease in full
- * build time was measured.
  */
 
-#if defined(WinPrecompile_h_)
-#error You shouldn't include the precompiled header file more than once.
-#endif
+#include <grpc/support/port_platform.h>
 
-#define WinPrecompile_h_
+#ifdef GPR_POSIX_STRING
 
-#define _USE_MATH_DEFINES // Make math.h behave like other platforms.
-
-#include <Windows.h>
-
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <math.h>
-#include <stdarg.h>
-#include <stddef.h>
 #include <stdio.h>
-#include <stdlib.h>
+#include <stdarg.h>
 #include <string.h>
-#include <time.h>
 
-#include <algorithm>
-#include <ciso646>
-#include <cmath>
-#include <cstddef>
-#include <limits>
-#include <string>
-#include <utility>
+#include <grpc/support/alloc.h>
+
+int gpr_asprintf(char **strp, const char *format, ...) {
+  va_list args;
+  int ret;
+  char buf[64];
+  size_t strp_buflen;
+
+  /* Use a constant-sized buffer to determine the length. */
+  va_start(args, format);
+  ret = vsnprintf(buf, sizeof(buf), format, args);
+  va_end(args);
+  if (ret < 0) {
+    *strp = NULL;
+    return -1;
+  }
+
+  /* Allocate a new buffer, with space for the NUL terminator. */
+  strp_buflen = (size_t)ret + 1;
+  if ((*strp = gpr_malloc(strp_buflen)) == NULL) {
+    /* This shouldn't happen, because gpr_malloc() calls abort(). */
+    return -1;
+  }
+
+  /* Return early if we have all the bytes. */
+  if (strp_buflen <= sizeof(buf)) {
+    memcpy(*strp, buf, strp_buflen);
+    return ret;
+  }
+
+  /* Try again using the larger buffer. */
+  va_start(args, format);
+  ret = vsnprintf(*strp, strp_buflen, format, args);
+  va_end(args);
+  if ((size_t)ret == strp_buflen - 1) {
+    return ret;
+  }
+
+  /* This should never happen. */
+  gpr_free(*strp);
+  *strp = NULL;
+  return -1;
+}
+
+#endif /* GPR_POSIX_STRING */