1 files changed, 66 insertions, 0 deletions
diff --git a/js/src/jsprf.h b/js/src/jsprf.h
new file mode 100644
index 000000000..b84b5a5c9
--- /dev/null
+++ b/js/src/jsprf.h
@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jsprf_h
+#define jsprf_h
+
+/*
+** API for PR printf like routines. Supports the following formats
+**      %d - decimal
+**      %u - unsigned decimal
+**      %x - unsigned hex
+**      %X - unsigned uppercase hex
+**      %o - unsigned octal
+**      %hd, %hu, %hx, %hX, %ho - "short" versions of above
+**      %ld, %lu, %lx, %lX, %lo - "long" versions of above
+**      %lld, %llu, %llx, %llX, %llo - "long long" versions of above
+**      %zd, %zo, %zu, %zx, %zX - size_t versions of above
+**      %Id, %Io, %Iu, %Ix, %IX - size_t versions of above (for Windows compat)
+**           You should use PRI*SIZE macros instead
+**      %s - string
+**      %c - character
+**      %p - pointer (deals with machine dependent pointer size)
+**      %f - float
+**      %g - float
+*/
+
+#include "mozilla/IntegerPrintfMacros.h"
+#include "mozilla/SizePrintfMacros.h"
+
+#include <stdarg.h>
+
+#include "jstypes.h"
+
+/*
+** sprintf into a malloc'd buffer. Return a pointer to the malloc'd
+** buffer on success, nullptr on failure. Call "JS_smprintf_free" to release
+** the memory returned.
+*/
+extern JS_PUBLIC_API(char*) JS_smprintf(const char* fmt, ...)
+    MOZ_FORMAT_PRINTF(1, 2);
+
+/*
+** Free the memory allocated, for the caller, by JS_smprintf
+*/
+extern JS_PUBLIC_API(void) JS_smprintf_free(char* mem);
+
+/*
+** "append" sprintf into a malloc'd buffer. "last" is the last value of
+** the malloc'd buffer. sprintf will append data to the end of last,
+** growing it as necessary using realloc. If last is nullptr, JS_sprintf_append
+** will allocate the initial string. The return value is the new value of
+** last for subsequent calls, or nullptr if there is a malloc failure.
+*/
+extern JS_PUBLIC_API(char*) JS_sprintf_append(char* last, const char* fmt, ...)
+    MOZ_FORMAT_PRINTF(2, 3);
+
+/*
+** va_list forms of the above.
+*/
+extern JS_PUBLIC_API(char*) JS_vsmprintf(const char* fmt, va_list ap);
+extern JS_PUBLIC_API(char*) JS_vsprintf_append(char* last, const char* fmt, va_list ap);
+
+#endif /* jsprf_h */