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json: Update the internal copy of JsonGenerator

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The JsonGenerator we have inside Clutter as a fallback for a missing
system copy of JSON-GLib is way out of date.
This commit is contained in:
Emmanuele Bassi 2010-03-19 10:40:12 +00:00
parent d21b7522f8
commit 295bc517f8
1 changed files with 143 additions and 34 deletions
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177
clutter/json/json-generator.c
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@ -2,19 +2,23 @@
* *
* This file is part of JSON-GLib * This file is part of JSON-GLib
* Copyright (C) 2007 OpenedHand Ltd. * Copyright (C) 2007 OpenedHand Ltd.
* Copyright (C) 2009 Intel Corp.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public * modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either * License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version. * version 2.1 of the License, or (at your option) any later version.
* *
* This library is distributed in the hope that it will be useful, * This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of * but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details. * Lesser General Public License for more details.
* *
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Author: * Author:
* Emmanuele Bassi <ebassi@openedhand.com> * Emmanuele Bassi <ebassi@linux.intel.com>
*/ */
/** /**
@ -34,8 +38,8 @@
#include "json-types-private.h" #include "json-types-private.h"
#include "json-generator.h"
#include "json-marshal.h" #include "json-marshal.h"
#include "json-generator.h"
#define JSON_GENERATOR_GET_PRIVATE(obj) \ #define JSON_GENERATOR_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), JSON_TYPE_GENERATOR, JsonGeneratorPrivate)) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), JSON_TYPE_GENERATOR, JsonGeneratorPrivate))
@ -45,6 +49,7 @@ struct _JsonGeneratorPrivate
JsonNode *root; JsonNode *root;
guint indent; guint indent;
gunichar indent_char;
guint pretty : 1; guint pretty : 1;
}; };
@ -54,7 +59,9 @@ enum
PROP_0, PROP_0,
PROP_PRETTY, PROP_PRETTY,
PROP_INDENT PROP_INDENT,
PROP_ROOT,
PROP_INDENT_CHAR
}; };
static gchar *dump_value (JsonGenerator *generator, static gchar *dump_value (JsonGenerator *generator,
@ -72,8 +79,39 @@ static gchar *dump_object (JsonGenerator *generator,
JsonObject *object, JsonObject *object,
gsize *length); gsize *length);
/* non-ASCII characters can't be escaped, otherwise UTF-8
* chars will break, so we just pregenerate this table of
* high characters and then we feed it to g_strescape()
*/
static const char json_exceptions[] = {
0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86,
0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e,
0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96,
0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e,
0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6,
0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae,
0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe,
0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6,
0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce,
0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6,
0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde,
0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6,
0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee,
0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6,
0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe,
0xff,
'\0' /* g_strescape() expects a NUL-terminated string */
};
G_DEFINE_TYPE (JsonGenerator, json_generator, G_TYPE_OBJECT); G_DEFINE_TYPE (JsonGenerator, json_generator, G_TYPE_OBJECT);
static gchar *
json_strescape (const gchar *str)
{
return g_strescape (str, json_exceptions);
}
static void static void
json_generator_finalize (GObject *gobject) json_generator_finalize (GObject *gobject)
{ {
@ -101,6 +139,13 @@ json_generator_set_property (GObject *gobject,
case PROP_INDENT: case PROP_INDENT:
priv->indent = g_value_get_uint (value); priv->indent = g_value_get_uint (value);
break; break;
case PROP_INDENT_CHAR:
priv->indent_char = g_value_get_uint (value);
break;
case PROP_ROOT:
json_generator_set_root (JSON_GENERATOR (gobject),
g_value_get_boxed (value));
break;
default: default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break; break;
@ -123,6 +168,12 @@ json_generator_get_property (GObject *gobject,
case PROP_INDENT: case PROP_INDENT:
g_value_set_uint (value, priv->indent); g_value_set_uint (value, priv->indent);
break; break;
case PROP_INDENT_CHAR:
g_value_set_uint (value, priv->indent_char);
break;
case PROP_ROOT:
g_value_set_boxed (value, priv->root);
break;
default: default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break; break;
@ -167,6 +218,35 @@ json_generator_class_init (JsonGeneratorClass *klass)
0, G_MAXUINT, 0, G_MAXUINT,
2, 2,
G_PARAM_READWRITE)); G_PARAM_READWRITE));
/**
* JsonGenerator:root:
*
* The root #JsonNode to be used when constructing a JSON data
* stream.
*
* Since: 0.4
*/
g_object_class_install_property (gobject_class,
PROP_ROOT,
g_param_spec_boxed ("root",
"Root",
"Root of the JSON data tree",
JSON_TYPE_NODE,
G_PARAM_READWRITE));
/**
* JsonGenerator:indent-char:
*
* The character that should be used when indenting in pretty print.
*
* Since: 0.6
*/
g_object_class_install_property (gobject_class,
PROP_INDENT_CHAR,
g_param_spec_unichar ("indent-char",
"Indent Char",
"Character that should be used when indenting",
' ',
G_PARAM_READWRITE));
} }
static void static void
@ -178,6 +258,7 @@ json_generator_init (JsonGenerator *generator)
priv->pretty = FALSE; priv->pretty = FALSE;
priv->indent = 2; priv->indent = 2;
priv->indent_char = ' ';
} }
static gchar * static gchar *
@ -186,18 +267,20 @@ dump_value (JsonGenerator *generator,
const gchar *name, const gchar *name,
JsonNode *node) JsonNode *node)
{ {
gboolean pretty = generator->priv->pretty; JsonGeneratorPrivate *priv = generator->priv;
guint indent = generator->priv->indent; gboolean pretty = priv->pretty;
guint indent = priv->indent;
GValue value = { 0, }; GValue value = { 0, };
GString *buffer; GString *buffer;
gint i;
buffer = g_string_new (""); buffer = g_string_new ("");
if (pretty) if (pretty)
{ {
guint i;
for (i = 0; i < (level * indent); i++) for (i = 0; i < (level * indent); i++)
g_string_append_c (buffer, ' '); g_string_append_c (buffer, priv->indent_char);
} }
if (name && name[0] != '\0') if (name && name[0] != '\0')
@ -207,16 +290,28 @@ dump_value (JsonGenerator *generator,
switch (G_VALUE_TYPE (&value)) switch (G_VALUE_TYPE (&value))
{ {
case G_TYPE_INT: case G_TYPE_INT64:
g_string_append_printf (buffer, "%d", g_value_get_int (&value)); g_string_append_printf (buffer, "%" G_GINT64_FORMAT, g_value_get_int64 (&value));
break; break;
case G_TYPE_STRING: case G_TYPE_STRING:
g_string_append_printf (buffer, "\"%s\"", g_value_get_string (&value)); {
gchar *tmp;
tmp = json_strescape (g_value_get_string (&value));
g_string_append_printf (buffer, "\"%s\"", tmp);
g_free (tmp);
}
break; break;
case G_TYPE_FLOAT: case G_TYPE_DOUBLE:
g_string_append_printf (buffer, "%f", g_value_get_float (&value)); {
gchar buf[65];
g_ascii_formatd (buf, 65, "%g", g_value_get_double (&value));
g_string_append (buffer, buf);
}
break; break;
case G_TYPE_BOOLEAN: case G_TYPE_BOOLEAN:
@ -240,18 +335,19 @@ dump_array (JsonGenerator *generator,
JsonArray *array, JsonArray *array,
gsize *length) gsize *length)
{ {
gint array_len = json_array_get_length (array); JsonGeneratorPrivate *priv = generator->priv;
gint i; guint array_len = json_array_get_length (array);
guint i;
GString *buffer; GString *buffer;
gboolean pretty = generator->priv->pretty; gboolean pretty = priv->pretty;
guint indent = generator->priv->indent; guint indent = priv->indent;
buffer = g_string_new (""); buffer = g_string_new ("");
if (pretty) if (pretty)
{ {
for (i = 0; i < (level * indent); i++) for (i = 0; i < (level * indent); i++)
g_string_append_c (buffer, ' '); g_string_append_c (buffer, priv->indent_char);
} }
if (name && name[0] != '\0') if (name && name[0] != '\0')
@ -268,7 +364,7 @@ dump_array (JsonGenerator *generator,
{ {
JsonNode *cur = json_array_get_element (array, i); JsonNode *cur = json_array_get_element (array, i);
guint sub_level = level + 1; guint sub_level = level + 1;
gint j; guint j;
gchar *value; gchar *value;
switch (JSON_NODE_TYPE (cur)) switch (JSON_NODE_TYPE (cur))
@ -277,7 +373,7 @@ dump_array (JsonGenerator *generator,
if (pretty) if (pretty)
{ {
for (j = 0; j < (sub_level * indent); j++) for (j = 0; j < (sub_level * indent); j++)
g_string_append_c (buffer, ' '); g_string_append_c (buffer, priv->indent_char);
} }
g_string_append (buffer, "null"); g_string_append (buffer, "null");
break; break;
@ -285,16 +381,19 @@ dump_array (JsonGenerator *generator,
case JSON_NODE_VALUE: case JSON_NODE_VALUE:
value = dump_value (generator, sub_level, NULL, cur); value = dump_value (generator, sub_level, NULL, cur);
g_string_append (buffer, value); g_string_append (buffer, value);
g_free (value);
break; break;
case JSON_NODE_ARRAY: case JSON_NODE_ARRAY:
value = dump_array (generator, sub_level, NULL, json_node_get_array (cur), NULL); value = dump_array (generator, sub_level, NULL, json_node_get_array (cur), NULL);
g_string_append (buffer, value); g_string_append (buffer, value);
g_free (value);
break; break;
case JSON_NODE_OBJECT: case JSON_NODE_OBJECT:
value = dump_object (generator, sub_level, NULL, json_node_get_object (cur), NULL); value = dump_object (generator, sub_level, NULL, json_node_get_object (cur), NULL);
g_string_append (buffer, value); g_string_append (buffer, value);
g_free (value);
break; break;
} }
@ -310,7 +409,7 @@ dump_array (JsonGenerator *generator,
if (pretty) if (pretty)
{ {
for (i = 0; i < (level * indent); i++) for (i = 0; i < (level * indent); i++)
g_string_append_c (buffer, ' '); g_string_append_c (buffer, priv->indent_char);
} }
g_string_append_c (buffer, ']'); g_string_append_c (buffer, ']');
@ -328,18 +427,19 @@ dump_object (JsonGenerator *generator,
JsonObject *object, JsonObject *object,
gsize *length) gsize *length)
{ {
JsonGeneratorPrivate *priv = generator->priv;
GList *members, *l; GList *members, *l;
GString *buffer; GString *buffer;
gboolean pretty = generator->priv->pretty; gboolean pretty = priv->pretty;
guint indent = generator->priv->indent; guint indent = priv->indent;
gint i; guint i;
buffer = g_string_new (""); buffer = g_string_new ("");
if (pretty) if (pretty)
{ {
for (i = 0; i < (level * indent); i++) for (i = 0; i < (level * indent); i++)
g_string_append_c (buffer, ' '); g_string_append_c (buffer, priv->indent_char);
} }
if (name && name[0] != '\0') if (name && name[0] != '\0')
@ -359,7 +459,7 @@ dump_object (JsonGenerator *generator,
const gchar *member_name = l->data; const gchar *member_name = l->data;
JsonNode *cur = json_object_get_member (object, member_name); JsonNode *cur = json_object_get_member (object, member_name);
guint sub_level = level + 1; guint sub_level = level + 1;
gint j; guint j;
gchar *value; gchar *value;
switch (JSON_NODE_TYPE (cur)) switch (JSON_NODE_TYPE (cur))
@ -368,7 +468,7 @@ dump_object (JsonGenerator *generator,
if (pretty) if (pretty)
{ {
for (j = 0; j < (sub_level * indent); j++) for (j = 0; j < (sub_level * indent); j++)
g_string_append_c (buffer, ' '); g_string_append_c (buffer, priv->indent_char);
} }
g_string_append_printf (buffer, "\"%s\" : null", member_name); g_string_append_printf (buffer, "\"%s\" : null", member_name);
break; break;
@ -376,16 +476,21 @@ dump_object (JsonGenerator *generator,
case JSON_NODE_VALUE: case JSON_NODE_VALUE:
value = dump_value (generator, sub_level, member_name, cur); value = dump_value (generator, sub_level, member_name, cur);
g_string_append (buffer, value); g_string_append (buffer, value);
g_free (value);
break; break;
case JSON_NODE_ARRAY: case JSON_NODE_ARRAY:
value = dump_array (generator, sub_level, member_name, json_node_get_array (cur), NULL); value = dump_array (generator, sub_level, member_name,
json_node_get_array (cur), NULL);
g_string_append (buffer, value); g_string_append (buffer, value);
g_free (value);
break; break;
case JSON_NODE_OBJECT: case JSON_NODE_OBJECT:
value = dump_object (generator, sub_level, member_name, json_node_get_object (cur), NULL); value = dump_object (generator, sub_level, member_name,
json_node_get_object (cur), NULL);
g_string_append (buffer, value); g_string_append (buffer, value);
g_free (value);
break; break;
} }
@ -403,7 +508,7 @@ dump_object (JsonGenerator *generator,
if (pretty) if (pretty)
{ {
for (i = 0; i < (level * indent); i++) for (i = 0; i < (level * indent); i++)
g_string_append_c (buffer, ' '); g_string_append_c (buffer, priv->indent_char);
} }
g_string_append_c (buffer, '}'); g_string_append_c (buffer, '}');
@ -432,13 +537,14 @@ json_generator_new (void)
/** /**
* json_generator_to_data: * json_generator_to_data:
* @generator: a #JsonGenerator * @generator: a #JsonGenerator
* @length: return location for the length of the returned buffer, or %NULL * @length: (out): return location for the length of the returned
* buffer, or %NULL
* *
* Generates a JSON data stream from @generator and returns it as a * Generates a JSON data stream from @generator and returns it as a
* buffer. * buffer.
* *
* Return value: a newly allocated buffer holding a JSON data stream. Use * Return value: a newly allocated buffer holding a JSON data stream.
* g_free() to free the allocated resources. * Use g_free() to free the allocated resources.
*/ */
gchar * gchar *
json_generator_to_data (JsonGenerator *generator, json_generator_to_data (JsonGenerator *generator,
@ -519,6 +625,9 @@ json_generator_to_file (JsonGenerator *generator,
* *
* Sets @node as the root of the JSON data stream to be serialized by * Sets @node as the root of the JSON data stream to be serialized by
* the #JsonGenerator. * the #JsonGenerator.
*
* <note>The node is copied by the generator object, so it can be safely
* freed after calling this function.</note>
*/ */
void void
json_generator_set_root (JsonGenerator *generator, json_generator_set_root (JsonGenerator *generator,
@ -533,5 +642,5 @@ json_generator_set_root (JsonGenerator *generator,
} }
if (node) if (node)
generator->priv->root = node; generator->priv->root = json_node_copy (node);
} }