In-place replacement for xml2js parseString. This is about 20x faster and makes use of the rapidxml C++ library.
Home Page: https://www.npmjs.com/package/fast-xml2js
License: MIT License
When fast-xml2js is given invalid XML syntax, it kills the process, rather than catching the error and logging it.
Invalid XML example:
<UserName>asdf</UserName/>
Usage example:
import { parseString } from 'fast-xml2js'
...
export const parseXML = (str, opts) => {
return new Promise((resolve, reject) => {
parseString(str, (err, rst) => {
if (err) {
logger.error('Error parsing XML file')
reject(err)
} else {
resolve(rst)
}
})
})
}
When xml2js encounters the same syntax, it throws the following error:
Error: Invalid tagname in closing tag
Line: 2
Column: 37
Char: /
xml2js does the correct behavior, we should follow it.
For example:
<something height="240" width="320">
Some Text
</something>
> docker pull node
> docker run -it node /bin/bash
root@4a251ed35176:/# mkdir test
root@4a251ed35176:/# cd test
root@4a251ed35176:/test# npm init -y
root@4a251ed35176:/test# npm install --save fast-xml2js
npm info it worked if it ends with ok
npm info using [email protected]
npm info using [email protected]
npm info attempt registry request try #1 at 9:36:57 PM
npm http request GET https://registry.npmjs.org/fast-xml2js
npm http 304 https://registry.npmjs.org/fast-xml2js
npm info addNameTag [ 'fast-xml2js', 'latest' ]
npm info lifecycle [email protected]~preinstall: [email protected]
npm WARN lifecycle [email protected]~preinstall: cannot run in wd %s %s (wd=%s) [email protected] node-gyp configure && node-gyp build /test/node_modules/.staging/fast-xml2js-5c4308bb
npm info linkStuff [email protected]
npm info lifecycle [email protected]~install: [email protected]
npm info lifecycle [email protected]~postinstall: [email protected]
[email protected] /test
`-- [email protected]
npm WARN [email protected] No description
npm WARN [email protected] No repository field.
npm info ok
root@4a251ed35176:/test# node -r fast-xml2js -e 'true'
module.js:457
throw err;
^
Error: Cannot find module './fast-xml2js/fast-xml2js.node'
at Function.Module._resolveFilename (module.js:455:15)
at Function.Module._load (module.js:403:25)
at Module.require (module.js:483:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (/test/node_modules/fast-xml2js/index.js:1:80)
at Module._compile (module.js:556:32)
at Object.Module._extensions..js (module.js:565:10)
at Module.load (module.js:473:32)
at tryModuleLoad (module.js:432:12)
at Function.Module._load (module.js:424:3)
This has something to do with the way node-gyp is set up with this package: http://stackoverflow.com/a/19132229/403571
It seems the workaround is npm install --unsafe-perm.
The problem does not exist in other native modules.
Error is because of exceptions being disabled in Mac build.
Hi,
With the latest node.js this doesn't compile anymore.
It looks like some argument count has changed.
make: Entering directory '/src/tor/node_modules/fast-xml2js/build'
CXX(target) Release/obj.target/fast-xml2js/fast-xml2js.o
../fast-xml2js.cpp: In function 'void fastxml2js::ParseString(const v8::FunctionCallbackInfo<v8::Value>&)':
../fast-xml2js.cpp:46:46: warning: 'v8::Local<v8::String> v8::Value::ToString() const' is deprecated: Use maybe version [-Wdeprecated-declarations]
String::Utf8Value param1(args[0]->ToString());
^
In file included from /root/.node-gyp/11.11.0/include/node/node.h:63:0,
from ../fast-xml2js.cpp:2:
/root/.node-gyp/11.11.0/include/node/v8.h:10251:15: note: declared here
Local<String> Value::ToString() const {
^~~~~
../fast-xml2js.cpp:46:47: warning: 'v8::String::Utf8Value::Utf8Value(v8::Local<v8::Value>)' is deprecated: Use Isolate version [-Wdeprecated-declarations]
String::Utf8Value param1(args[0]->ToString());
^
In file included from /root/.node-gyp/11.11.0/include/node/v8.h:26:0,
from /root/.node-gyp/11.11.0/include/node/node.h:63,
from ../fast-xml2js.cpp:2:
/root/.node-gyp/11.11.0/include/node/v8.h:2992:28: note: declared here
explicit Utf8Value(Local<v8::Value> obj));
^
/root/.node-gyp/11.11.0/include/node/v8config.h:326:3: note: in definition of macro 'V8_DEPRECATED'
declarator __attribute__((deprecated(message)))
^~~~~~~~~~
../fast-xml2js.cpp:90:76: error: no matching function for call to 'v8::Object::HasOwnProperty(v8::Local<v8::String>)'
if(obj->HasOwnProperty(String::NewFromUtf8(isolate, node->name())))
^
In file included from /root/.node-gyp/11.11.0/include/node/node.h:63:0,
from ../fast-xml2js.cpp:2:
/root/.node-gyp/11.11.0/include/node/v8.h:3617:37: note: candidate: v8::Maybe<bool> v8::Object::HasOwnProperty(v8::Local<v8::Context>, v8::Local<v8::Name>)
V8_WARN_UNUSED_RESULT Maybe<bool> HasOwnProperty(Local<Context> context,
^~~~~~~~~~~~~~
/root/.node-gyp/11.11.0/include/node/v8.h:3617:37: note: candidate expects 2 arguments, 1 provided
/root/.node-gyp/11.11.0/include/node/v8.h:3619:37: note: candidate: v8::Maybe<bool> v8::Object::HasOwnProperty(v8::Local<v8::Context>, uint32_t)
V8_WARN_UNUSED_RESULT Maybe<bool> HasOwnProperty(Local<Context> context,
^~~~~~~~~~~~~~
/root/.node-gyp/11.11.0/include/node/v8.h:3619:37: note: candidate expects 2 arguments, 1 provided
../fast-xml2js.cpp:113:76: error: no matching function for call to 'v8::Object::HasOwnProperty(v8::Local<v8::String>)'
if(obj->HasOwnProperty(String::NewFromUtf8(isolate, node->name())))
^
In file included from /root/.node-gyp/11.11.0/include/node/node.h:63:0,
from ../fast-xml2js.cpp:2:
/root/.node-gyp/11.11.0/include/node/v8.h:3617:37: note: candidate: v8::Maybe<bool> v8::Object::HasOwnProperty(v8::Local<v8::Context>, v8::Local<v8::Name>)
V8_WARN_UNUSED_RESULT Maybe<bool> HasOwnProperty(Local<Context> context,
^~~~~~~~~~~~~~
/root/.node-gyp/11.11.0/include/node/v8.h:3617:37: note: candidate expects 2 arguments, 1 provided
/root/.node-gyp/11.11.0/include/node/v8.h:3619:37: note: candidate: v8::Maybe<bool> v8::Object::HasOwnProperty(v8::Local<v8::Context>, uint32_t)
V8_WARN_UNUSED_RESULT Maybe<bool> HasOwnProperty(Local<Context> context,
^~~~~~~~~~~~~~
/root/.node-gyp/11.11.0/include/node/v8.h:3619:37: note: candidate expects 2 arguments, 1 provided
make: *** [fast-xml2js.target.mk:97: Release/obj.target/fast-xml2js/fast-xml2js.o] Error 1
make: Leaving directory '/src/tor/node_modules/fast-xml2js/build'
Cheers,
Mark
Just wanna thank you for publishing this. I do like the idea of xml2js but the performance is terrible. I'm gonna do some testing and let you know how it holds up.
Processing currently takes place on the event thread and does not asynchronously callback, but synchronously does.
Tested in production thoroughly and works well.
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