Allow forcing floats to be encoded as F32

Author: Jack

msgpack.c

@@ -55,6 +55,9 @@ STD_PHP_INI_BOOLEAN(
 STD_PHP_INI_BOOLEAN(
     "msgpack.use_str8_serialization", "1", PHP_INI_ALL, OnUpdateBool,
     use_str8_serialization, zend_msgpack_globals, msgpack_globals)
+STD_PHP_INI_BOOLEAN(
+    "msgpack.force_f32", "0", PHP_INI_ALL, OnUpdateBool,
+    force_f32, zend_msgpack_globals, msgpack_globals)
 PHP_INI_END()
 
 #if HAVE_PHP_SESSION
@@ -115,6 +118,8 @@ static ZEND_MINIT_FUNCTION(msgpack) /* {{{ */ {
             MSGPACK_CLASS_OPT_PHPONLY, CONST_CS | CONST_PERSISTENT);
     REGISTER_LONG_CONSTANT("MESSAGEPACK_OPT_ASSOC",
             MSGPACK_CLASS_OPT_ASSOC, CONST_CS | CONST_PERSISTENT);
+    REGISTER_LONG_CONSTANT("MESSAGEPACK_OPT_FORCE_F32",
+            MSGPACK_CLASS_OPT_FORCE_F32, CONST_CS | CONST_PERSISTENT);
 
     return SUCCESS;
 }

msgpack_class.c

@@ -11,6 +11,7 @@ typedef struct {
     long php_only;
     zend_bool assoc;
     zend_object object;
+    zend_bool force_f32;
 } php_msgpack_base_t;
 
 typedef struct {
@@ -178,6 +179,7 @@ static void php_msgpack_unpacker_free(zend_object *object) /* {{{ */ {
 static ZEND_METHOD(msgpack, __construct) /* {{{ */ {
     zend_bool php_only = MSGPACK_G(php_only);
     zend_bool assoc = MSGPACK_G(assoc);
+    zend_bool force_f32 = MSGPACK_G(force_f32);
     php_msgpack_base_t *base = Z_MSGPACK_BASE_P(getThis());
 
     if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &php_only) == FAILURE) {
@@ -186,6 +188,7 @@ static ZEND_METHOD(msgpack, __construct) /* {{{ */ {
 
     base->php_only = php_only;
     base->assoc = assoc;
+    base->force_f32 = force_f32;
 }
 /* }}} */
 
@@ -205,6 +208,9 @@ static ZEND_METHOD(msgpack, setOption) /* {{{ */ {
         case MSGPACK_CLASS_OPT_ASSOC:
             base->assoc = i_zend_is_true(value);
             break;
+        case MSGPACK_CLASS_OPT_FORCE_F32:
+            base->force_f32 = i_zend_is_true(value);
+            break;
         default:
             MSGPACK_WARNING("[msgpack] (MessagePack::setOption) "
                             "error setting msgpack option");
@@ -221,6 +227,7 @@ static ZEND_METHOD(msgpack, pack) /* {{{ */ {
     smart_str buf = {0};
     int php_only = MSGPACK_G(php_only);
     zend_bool assoc = MSGPACK_G(assoc);
+    zend_bool force_f32 = MSGPACK_G(force_f32);
     php_msgpack_base_t *base = Z_MSGPACK_BASE_P(getThis());
 
     if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &parameter) == FAILURE) {
@@ -229,11 +236,13 @@ static ZEND_METHOD(msgpack, pack) /* {{{ */ {
 
     MSGPACK_G(php_only) = base->php_only;
     MSGPACK_G(assoc) = base->assoc;
+    MSGPACK_G(force_f32) = base->force_f32;
 
     php_msgpack_serialize(&buf, parameter);
 
     MSGPACK_G(php_only) = php_only;
     MSGPACK_G(assoc) = assoc;
+    MSGPACK_G(force_f32) = force_f32;
     if (buf.s) {
         smart_str_0(&buf);
         ZVAL_STR(return_value, buf.s);
@@ -512,6 +521,7 @@ void msgpack_init_class() /* {{{ */ {
 
     zend_declare_class_constant_long(msgpack_ce, ZEND_STRS("OPT_PHPONLY") - 1, MSGPACK_CLASS_OPT_PHPONLY);
     zend_declare_class_constant_long(msgpack_ce, ZEND_STRS("OPT_ASSOC") - 1, MSGPACK_CLASS_OPT_ASSOC);
+    zend_declare_class_constant_long(msgpack_ce, ZEND_STRS("OPT_FORCE_F32") - 1, MSGPACK_CLASS_OPT_FORCE_F32);
 
     /* unpacker */
     INIT_CLASS_ENTRY(ce, "MessagePackUnpacker", msgpack_unpacker_methods);

msgpack_class.h

@@ -4,6 +4,7 @@
 
 #define MSGPACK_CLASS_OPT_PHPONLY -1001
 #define MSGPACK_CLASS_OPT_ASSOC -1002
+#define MSGPACK_CLASS_OPT_FORCE_F32 -1003
 
 void msgpack_init_class();
 

msgpack_pack.c

@@ -589,7 +589,11 @@ void msgpack_serialize_zval(smart_str *buf, zval *val, HashTable *var_hash) /* {
             msgpack_pack_long(buf, zval_get_long(val_noref));
             break;
         case IS_DOUBLE:
-            msgpack_pack_double(buf, Z_DVAL_P(val_noref));
+            if (MSGPACK_G(force_f32)) {
+                msgpack_pack_float(buf, (float) Z_DVAL_P(val_noref));
+            } else {
+                msgpack_pack_double(buf, Z_DVAL_P(val_noref));
+            }
             break;
         case IS_STRING:
             msgpack_serialize_string(buf, Z_STRVAL_P(val_noref), Z_STRLEN_P(val_noref));

php_msgpack.h

@@ -26,6 +26,7 @@ ZEND_BEGIN_MODULE_GLOBALS(msgpack)
     zend_bool assoc;
     zend_bool illegal_key_insert;
     zend_bool use_str8_serialization;
+	zend_bool force_f32;
     struct {
         void *var_hash;
         unsigned level;

tests/029.phpt

@@ -51,6 +51,7 @@ header Version => %s
 Directive => Local Value => Master Value
 msgpack.assoc => %s => %s
 msgpack.error_display => %s => %s
+msgpack.force_f32 => Off => Off
 msgpack.illegal_key_insert => %s => %s
 msgpack.php_only => %s => %s
 msgpack.use_str8_serialization => %s => %s

tests/141.phpt

@@ -0,0 +1,25 @@
+--TEST--
+Check for f32 serialisation
+--SKIPIF--
+--FILE--
+<?php
+if(!extension_loaded('msgpack')) {
+    dl('msgpack.' . PHP_SHLIB_SUFFIX);
+}
+
+function test($type, $variable) {
+    $packer = new \MessagePack(false);
+
+    $packer->setOption(\MessagePack::OPT_FORCE_F32, true);
+
+    $serialized = $packer->pack($variable);
+
+    echo $type, PHP_EOL;
+    echo bin2hex($serialized), PHP_EOL;
+}
+
+test('double: 123.456', 123.456);
+?>
+--EXPECT--
+double: 123.456
+ca42f6e979

tests/142.phpt

@@ -0,0 +1,23 @@
+--TEST--
+Check for f32 serialisation
+--SKIPIF--
+--INI--
+msgpack.force_f32 = 1
+--FILE--
+<?php
+if(!extension_loaded('msgpack')) {
+    dl('msgpack.' . PHP_SHLIB_SUFFIX);
+}
+
+function test($type, $variable) {
+    $serialized = msgpack_pack($variable);
+
+    echo $type, PHP_EOL;
+    echo bin2hex($serialized), PHP_EOL;
+}
+
+test('double: 123.456', 123.456);
+?>
+--EXPECT--
+double: 123.456
+ca42f6e979

tests/143.phpt

@@ -0,0 +1,25 @@
+--TEST--
+Check for f32 serialisation
+--SKIPIF--
+--INI--
+msgpack.force_f32 = 1
+--FILE--
+<?php
+if(!extension_loaded('msgpack')) {
+    dl('msgpack.' . PHP_SHLIB_SUFFIX);
+}
+
+function test($type, $variable) {
+    $packer = new \MessagePack(false);
+
+    $serialized = $packer->pack($variable);
+
+    echo $type, PHP_EOL;
+    echo bin2hex($serialized), PHP_EOL;
+}
+
+test('double: 123.456', 123.456);
+?>
+--EXPECT--
+double: 123.456
+ca42f6e979