Created
May 14, 2014 21:26
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#include <bson.h> | |
#include <json.h> | |
#include <stdio.h> | |
#include <unistd.h> | |
#include <glib.h> | |
static bson *json_to_bson (struct json_object *json); | |
static void | |
json_key_to_bson_key (bson *b, void *val, | |
const gchar *key) | |
{ | |
switch (json_object_get_type (val)) | |
{ | |
case json_type_boolean: | |
bson_append_boolean (b, key, json_object_get_boolean (val)); | |
break; | |
case json_type_double: | |
bson_append_double (b, key, json_object_get_double (val)); | |
break; | |
case json_type_int: | |
bson_append_int32 (b, key, json_object_get_int (val)); | |
break; | |
case json_type_object: | |
{ | |
bson *sub; | |
sub = json_to_bson (val); | |
bson_append_document (b, key, sub); | |
bson_free (sub); | |
break; | |
} | |
case json_type_array: | |
{ | |
gint pos; | |
bson *sub; | |
sub = bson_new (); | |
for (pos = 0; pos < json_object_array_length (val); pos++) | |
{ | |
gchar *nk = g_strdup_printf ("%d", pos); | |
json_key_to_bson_key (sub, json_object_array_get_idx (val, pos), | |
nk); | |
g_free (nk); | |
} | |
bson_finish (sub); | |
bson_append_array (b, key, sub); | |
bson_free (sub); | |
break; | |
} | |
case json_type_string: | |
bson_append_string (b, key, json_object_get_string (val), -1); | |
break; | |
default: | |
break; | |
} | |
} | |
static bson * | |
json_to_bson (struct json_object *json) | |
{ | |
bson *b; | |
b = bson_new (); | |
{ | |
json_object_object_foreach (json, key, val) | |
{ | |
json_key_to_bson_key (b, val, key); | |
} | |
} | |
bson_finish (b); | |
return b; | |
} | |
int | |
main (int argc, char **argv) | |
{ | |
GIOChannel *input; | |
GString *json_str; | |
GError *error = NULL; | |
struct json_tokener *tokener; | |
input = g_io_channel_unix_new (0); | |
json_str = g_string_new (NULL); | |
tokener = json_tokener_new (); | |
while (g_io_channel_read_line_string (input, json_str, | |
NULL, &error) == G_IO_STATUS_NORMAL) | |
{ | |
struct json_object *json; | |
bson *bson; | |
json_tokener_reset (tokener); | |
json = json_tokener_parse_ex (tokener, json_str->str, json_str->len); | |
if (!json) | |
{ | |
fprintf (stderr, "Error parsing json: %s\n", json_str->str); | |
break; | |
} | |
if (json_object_get_type (json) != json_type_object) | |
{ | |
fprintf (stderr, | |
"Error: json's top-level object is not object: %s\n", | |
json_str->str); | |
json_object_put (json); | |
break; | |
} | |
bson = json_to_bson (json); | |
json_object_put (json); | |
write (1, bson_data (bson), bson_size (bson)); | |
bson_free (bson); | |
} | |
return 0; | |
} |
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all: json2bson | |
clean: | |
rm -f json2bson | |
json2bson: json2bson.c | |
${CC} $(shell pkg-config --cflags json libmongo-client glib-2.0) -Wall -O0 -ggdb3 -std=c99 ${CFLAGS} \ | |
$(shell pkg-config --libs json libmongo-client glib-2.0) -o $@ $^ | |
check: all | |
./json2bson <test.json >test.bson | |
bsondump test.bson | head -n -1 >out.json | |
cmp test.json out.json | |
.PHONY: all clean check |
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{ "foo" : "bar" } | |
{ "str" : "string", "int32" : 42, "double" : 3.14, "array" : [ 1, 2, 4.2, "foo", { "embedded" : true }, [ 0, 1 ] ], "doc" : { "nested" : { "deep" : "yes" } } } |
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