murex Shell Docs

API Reference: lang.MarshalData() (system API)

Converts structured memory into a murex data-type (eg for stdio)

Description

Usage

b, err := lang.MarshalData(p, dataType, data)

Examples

func exampleCommand(p *lang.Process) error {
    data := map[string]string {
        "foo": "hello foo",
        "bar": "hello bar",
    }

    dataType := "json"

    b, err := lang.MarshalData(p, dataType, data)
    if err != nil {
        return err
    }

    _, err := p.Stdout.Write(b)
    return err
}

Detail

Go source file:

package lang

import (
    "errors"
)

// MarshalData is a global marshaller which should be called from within murex
// builtin commands (etc).
// See docs/apis/marshaldata.html for more details
func MarshalData(p *Process, dataType string, data interface{}) (b []byte, err error) {
    // This is one of the very few maps in Murex which isn't hidden behind a sync
    // lock of one description or other. The rational is that even mutexes can
    // add a noticeable overhead on the performance of tight loops and I expect
    // this function to be called _a lot_ while also only needing to be written
    // to via code residing in within builtin types init() function (ie while
    // murex is effectively single threaded). So there shouldn't be any data-
    // races -- PROVIDING developers strictly follow the pattern of only writing
    // to this map within init() func's.
    if Marshallers[dataType] == nil {
        return nil, errors.New("I don't know how to marshal `" + dataType + "`.")
    }

    b, err = Marshallers[dataType](p, data)
    if err != nil {
        return nil, errors.New("[" + dataType + " marshaller] " + err.Error())
    }

    return
}

Parameters

  1. *lang.Process: Process's runtime state. Typically expressed as the variable p
  2. string: murex data type
  3. interface{}: data you wish to marshal

See Also

This site's content is rebuilt automatically from murex's source code after each merge to the master branch. Downloadable murex binaries are also built with the website.

Last built on Tue Jun 22 08:18:17 UTC 2021 against commit 2235c7b2235c7b18f86f1cf214e246b88b0ea193d87fe80.

Current version is 2.2.1100 BETA which has been verified against tests.