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json2pb

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json2pb - npm Package Compare versions

Comparing version
1.1.2
 to
1.1.4
.idea/.name

Sorry, the diff of this file is not supported yet

+6
.idea/encodings.xml
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+7
.idea/jsLibraryMappings.xml
<?xml version="1.0" encoding="UTF-8"?>
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</project>
.idea/json2pb.iml

Sorry, the diff of this file is not supported yet

+14
.idea/libraries/json2pb_node_modules.xml
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+16
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+8
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+6
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+16
examples/example.js
/**
* Created by randy on 2016/4/24.
*/
ProtoBuf = require("protobufjs"),
fs = require('fs');
var builder = ProtoBuf.newBuilder({ convertFieldsToCamelCase: false });
ProtoBuf.loadProtoFile(__dirname + '/motion.proto', builder);
var root = builder.build('');
var buffer = fs.readFileSync(__dirname + '/motion.pb');
var motion = root.motion.decode(buffer);
console.log(motion.encodeJSON()); 
examples/example.js~

Sorry, the diff of this file is not supported yet

+9
examples/motion_row.proto
syntax = "proto3";
message motion_row {
int32 motion_id = 1;
string name = 2;
repeated string privileges = 3;
string type = 4;
string category = 5;
} 
examples/motion.pb

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README.md~

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+70
src/packer.js
/**
* Created by randy on 2016/4/17.
*/
'use strict';
var fs = require('co-fs'),
path = require('path'),
util = require('util'),
pkg = require('../package.json');
var packer = module.exports = { };
packer.tag = '_message';
packer.root = null;
packer.stack = [];
packer.json2pb = function*(obj) {
packer.stack.push(obj);
var message_name = obj[packer.tag];
if((message_name == undefined) || (message_name == null)) {
throw new Error(util.format('[%s] not exists.', packer.tag));
}
var T = packer.root[message_name];
if((T == undefined) || (T == null)) {
throw new Error(util.format('Message [%s] not exists.', message_name));
}
var pbo = new T();
for(var field of pbo.$type.children)
{
var fjo = obj[field.name];
if(field.required) {
if(fjo == undefined) {
throw new Error(util.format('Missing required field [%s].', field.name));
}
}
if(fjo == undefined) {
continue;
}
var field_type = field.resolvedType;
if(field.repeated) {
for(var entity of fjo) {
var fpbo = null;
if(field_type == null) {
fpbo = entity;
} else if(field_type.className == "Message") {
fpbo = yield packer.json2pb(entity);
}
if(fpbo == null) {
throw new Error('Object parse failed.');
}
pbo[field.name].push(fpbo)
}
} else {
var fpbo = null;
if(field_type == null) {
fpbo = fjo;
} else if(field_type.className == "Message") {
fpbo = yield packer.json2pb(fjo);
}
if(fpbo == null) {
throw new Error('Object parse failed.');
}
pbo[field.name] = fpbo;
}
}
packer.stack.pop();
return pbo;
}; 
+1
-8
examples/motion.proto
syntax = "proto3";
package json2pb;
import "motion_row.proto";
message motion_row {
int32 motion_id = 1;
string name = 2;
repeated string privileges = 3;
string type = 4;
string category = 5;
}

@@ -12,0 +5,0 @@ message motion {

+1
-1
package.json
{
"name": "json2pb",
"version": "1.1.2",
"version": "1.1.4",
"license": "MIT",

@@ -5,0 +5,0 @@ "author": "Randy Liu <randyliu@foxmail.com>",

+98
-1
README.md
# json2pb
Json2pb is a command line tool for converting json files to protobuf encoding file.
Json2pb是一个可以把json对象转换为Protobuf编码的命令行工具。
如果每一个json对象都含有_message字段来说明这个对象的类型
那么把Json对象用Protobuf打包只需要输入：json2pb -pmotion.proto motion.json
*想要把csv文件打包的朋友们， 可以先用[evalcsv](https://github.com/randyliu/evalcsv.git)把csv文件转换为json对象。*
Install
-------
1. Install [node.js](https://nodejs.org)
2. Install with [npm](https://npmjs.org/package/json2pb)
```
npm install -g json2pb
```
Usage
-----
Usage: json2pb [options] files
Options:
-h, --help Display this information.
-v, --version Print the compiler version.
-t, --tag The tag of storing message name, default is _message
-n, --namespace Set the namespace to be built.
-p, --proto Specify the .proto file for searching class name.
Example
-------
- 每一个json对象必须含有一个_message字段来说明这个对象的类型。
motion.json:
{
"_message": "motion",
"rows": [
{
"motion_id": 11001,
"name": "跪姿肩部下沉",
"privileges": [
"owner",
"admin",
"user",
"guest"
],
"type": "热身",
"category": "胸",
"_message": "motion_row"
},
{
"motion_id": 11002,
"name": "直体肩部下沉",
"privileges": [
"owner",
"admin",
"user",
"guest"
],
"type": "热身",
"category": "胸",
"_message": "motion_row"
}
]
}
motion.proto:
syntax = "proto3";
message motion_row {
int32 motion_id = 1;
string name = 2;
repeated string privileges = 3;
string type = 4;
string category = 5;
}
message motion {
repeated motion_row rows = 1;
}
command line:
json2pb -pmotion.proto motion.json
Author
------
[@randyliu](http://github.com/randyliu)
Licence
-------
[See the MIT License](https://opensource.org/licenses/MIT)
+36
-45
src/json2pb.js
'use strict';
var mod_getopt = require('posix-getopt'),
pkg = require('../package.json'),
path = require('path'),
jparser = require('./jparser.js'),
ProtoBuf = require("protobufjs"),
packer = require('./packer.js'),
cofs = require('co-fs'),
ejs = require('ejs');
var namespace = pkg['name'];
var json2pb = module.exports = {};
var json2proto = module.exports = {};
function version()

@@ -25,19 +24,17 @@ {

{
console.error("Usage: %s [options] file", pkg['name']);
console.error("Usage: %s [options] files", pkg['name']);
console.error("Options:");
console.error(" -h, --help Display this information.");
console.error(" -v, --version Print the compiler version.");
console.error(" -o, --output Set the output file name.");
console.error(" -a, --auto Automatically generate a title for unnamed object.");
console.error(" -p, --prefix Set the class name prefix, default prefix is %s", pkg['name']);
console.error(" -n, --namespace Set the namespace, default namespace is %s", namespace);
console.error(" -t, --title_tag Specify the title_tag for searching class name, default title is \"_title\".");
console.error(" -t, --tag The tag of storing message name, default is %s", packer.tag);
console.error(" -n, --namespace Set the namespace to be built.");
console.error(" -p, --proto Specify the .proto file for searching class name.");
}
json2proto.main = function*(argv) {
json2pb.main = function*(argv) {
var parser, option;
var output_file = null;
var builder = ProtoBuf.newBuilder({ convertFieldsToCamelCase: false });
parser = new mod_getopt.BasicParser('v(version)h(help)t:(title)n:(namespace)p:(prefix)a(auto)o:(output)', argv);
parser = new mod_getopt.BasicParser('v(version)h(help)t:(tag)n:(namespace)p:(proto)', argv);
var namespace = '';
while ((option = parser.getopt()) !== undefined) {

@@ -51,16 +48,10 @@ switch (option.option) {

return 0;
case 'p':
jparser.prefix = option.optarg;
break;
case 'n':
namespace = option.optarg;
break;
case 'a':
jparser.auto = true;
break;
case 't':
jparser.title_tag = option.optarg;
packer.tag = option.optarg;
break;
case 'o':
output_file = option.optarg;
case 'p':
ProtoBuf.loadProtoFile(option.optarg, builder);
break;

@@ -74,30 +65,30 @@ default:

if (parser.optind() >= argv.length) {
usage('missing required argument: "input"');
console.error('Missing required argument: "input"');
usage();
return 1;
}
packer.root = builder.build(namespace);
if(packer.root == null)
{
console.error('Missing --proto=[protobuf .proto file].');
usage();
return 1;
}
//1.推测结构体名和确定类型。
for(var i = parser.optind(); i < argv.length; ++i) {
var object = yield jparser.parse(argv[i]);
if(jparser.auto) {
var inf = argv[i];
var outf = null;
if(inf.substring(inf.length - 5, inf.length) == '.json') {
//Json Object with Title
outf = inf.substring(0, inf.length - 5) + '.jot';
} else {
outf = inf + '.jot';
}
yield cofs.writeFile(outf, JSON.stringify(object), 'utf8');
var input_file = argv[i];
var output_file = null;
if (input_file.substring(input_file.length - 5, input_file.length) == '.json') {
output_file = input_file.substring(0, input_file.length - 5) + '.pb';
} else {
output_file = input_file + '.pb';
}
}
if(output_file != null) {
var schema = {
namespace : namespace,
definitions : jparser.definitions()
};
var str = yield cofs.readFile(path.join(__dirname, '../ejs', 'protobuf.ejs'), 'utf8');
var proto = ejs.render(str, { schema });
yield cofs.writeFile(output_file, proto, 'utf8');
var str = yield cofs.readFile(input_file, 'utf8');
var obj = JSON.parse(str);
var pbobj = yield packer.json2pb(obj);
var byteBuffer = pbobj.encode();
var buffer = byteBuffer.toBuffer();
yield cofs.writeFile(output_file, buffer);
yield cofs.chmod(output_file, 438);

@@ -104,0 +95,0 @@ }

-292
src/jparser.js
/**
* Created by randy on 2016/4/17.
*/
'use strict';
var INT32_MIN = -2147483648;
var INT32_MAX = 2147483647;
var UINT32_MAX = 4294967295;
var INT64_MIN = -9223372036854775808;
var INT64_MAX = 9223372036854775807;
var UINT64_MAX = 18446744073709551615;
var reserved_words = new Set(["boolean", "string", "number", "array"]);
var fs = require('co-fs'),
path = require('path'),
pkg = require('../package.json');
var jparser = module.exports = {};
jparser.symbol_sequence = [];
jparser.symbols = new Map();
jparser.auto = false;
jparser.title_tag = "_title";
jparser.prefix = pkg['name'];
function getTitle(object, root) {
var title = object[jparser.title_tag];
if(reserved_words.has(title)) {
throw new Error();
}
if(title == undefined) {
if(jparser.auto) {
title = root;
} else {
throw new Error();
}
}
if((title == undefined) || (title == null)) {
throw new Error();
}
return title;
}
function getHash(object) {
if(object[jparser.title_tag] != undefined) {
return object[jparser.title_tag];
}
var t = '';
for(var key in object) {
if(key == jparser.title_tag) {
continue;
}
t += '_' + key;
}
return t;
}
//通过值和路径来推测类型
function getProperty(value) {
var property = {};
if(typeof value == "boolean") {
property.type = "boolean";
} else if(typeof value == "string") {
property.type = "string";
property.string_length = value.length;
} else if(typeof value == "number") {
property.type = "number";
property.min_number = value;
property.max_number = value;
property.is_integer = Number.isInteger(value);
} else if(typeof value == "object") {
if(value instanceof Array) {
property.type = "array";
property.array_length = value.length;
if(value.length <= 0) {
throw new Error();
}
if(value[0] instanceof Array) {
throw new Error();
}
//value[0]已经被search过
property.array_type = getProperty(value[0]);
for(var i = 1; i < value.length; ++i) {
if(value[i] == null) {
continue;
}
var p = getProperty(value[i]);
updateProperty(property.array_type, p);
}
if((property.array_type == undefined) || (property.array_type == null)){
throw new Error();
}
} else {
//value已经被search过
property.type = value[jparser.title_tag];
if((property.type == undefined) || (property.type == null)) {
throw new Error();
}
}
}
return property;
}
//把target的类型更新为更大的类型
function updateProperty(target, property) {
if(property.type == "string") {
if(property.string_length > target.string_length) {
target.string_length = property.string_length;
}
} else if(property.type == "number") {
if(property.min_number < target.min_number) {
target.min_number = property.min_number;
}
if(property.max_number > target.max_number) {
target.max_number = property.max_number;
}
if(!property.is_integer) {
target.is_integer = false;
}
} else if(property.type == "array") {
if(property.array_length > target.array_length) {
target.array_length = property.array_length;
}
//数组内不可以包含数组
updateProperty(target.array_type, property.array_type)
}
}
function search(object, root) {
var hash = '';
var title = null;
if(object[jparser.title_tag] == undefined) {
if(!jparser.auto) {
throw new Error();
}
title = root;
object[jparser.title_tag] = title;
for(var key in object) {
hash += '_' + key;
}
} else {
title = object[jparser.title_tag];
hash = object[jparser.title_tag];
}
//每个object都必须有一个成员_title
var symbol = {
title : title,
properties : {}
};
if(jparser.symbols.has(hash)) {
symbol = jparser.symbols.get(hash);
} else {
jparser.symbol_sequence.push(hash);
jparser.symbols.set(hash, symbol);
}
for(var id in object) {
//跳过内置字段
if(id == jparser.title_tag) {
continue;
}
var value = object[id];
if(value == null) {
continue;
}
if(typeof value == "object") {
if(value instanceof Array) {
for(var i = 0; i < value.length; ++i) {
if(value[i] == null) {
continue;
}
if(typeof value[i] == "object") {
//不支持数组嵌套
if(value[i] instanceof Array) {
throw new Error();
}
search(value[i], root + '_' + id);
}
}
} else {
search(value, root + '_' + id);
}
}
var property = getProperty(value);
if(symbol.properties[id] == null) {
symbol.properties[id] = property;
} else {
//字段不可以同时保存string, number, array, object
if(property.type != symbol.properties[id].type) {
throw new Error();
}
updateProperty(symbol.properties[id], property);
}
}
}
function getType(property) {
var type = null;
if(property.type == "number") {
var t = null;
if(property.is_integer) {
if((INT32_MIN <= property.min_number) && (property.max_number <= INT32_MAX)) {
t = "int32";
} else if((0 <= property.min_number) && (property.max_number <= UINT32_MAX)) {
t = "uint32";
} else if((INT64_MIN <= property.min_number) && (property.max_number <= INT64_MAX)) {
t = "int64";
} else if((0 <= property.min_number) && (property.max_number <= UINT64_MAX)) {
t = "uint64";
} else {
t = "double";
}
} else {
t = "double";
}
type = { type : t };
} else if(property.type == "boolean") {
type = { type : "boolean" };
} else if(property.type == "string") {
type = { type : "string" , string_length : property.string_length};
} else if(property.type == "array") {
type = {
type : "array",
array_length : property.array_length,
array_type : getType(property.array_type)
};
} else {
type = {
type : property.type,
is_object : true
};
}
return type;
}
jparser.definitions = function() {
var definitions = [];
for(var hash of jparser.symbol_sequence) {
var symbol = jparser.symbols.get(hash);
var definition = {
title : symbol.title,
properties : [
]
};
for(var name in symbol.properties) {
var p = symbol.properties[name];
definition.properties.push({
name : name,
type : getType(p)
});
}
definitions.push(definition);
}
return definitions;
};
jparser.parse = function*(file) {
var data = yield fs.readFile(file, 'utf8');
var json = JSON.parse(data);
if((json == null) || (typeof json != "object") || (json instanceof Array)) {
console.error('File[%s] not a json object.', file);
throw new Error();
}
var extName = path.extname(file);
var fileName = path.basename(file);
var root = fileName.substring(0, fileName.indexOf(extName));
search(json, jparser.prefix + '_' + root);
//返回处理好的json对象
return json;
}; 
bin/json2pb

Sorry, the diff of this file is not supported yet