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✂️ Is a general library to help modify or set data within data structures and other objects.

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go-playground/mold

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Package mold

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Package mold is a general library to help modify or set data within data structures and other objects.

How can this help me you ask, please see the examples here

Requirements

  • Go 1.18+

Installation

Use go get.

go get -u github.com/go-playground/mold/v4

Examples

Example Description
simple A basic example with custom function.
full A more real life example combining the usage of multiple packages.

Modifiers

These functions modify the data in-place.

Name Description
camel Camel Cases the data.
default Sets the provided default value only if the data is equal to it's default datatype value.
empty Sets the field equal to the datatype default value. e.g. 0 for int.
lcase lowercases the data.
ltrim Trims spaces from the left of the data provided in the params.
rtrim Trims spaces from the right of the data provided in the params.
set Set the provided value.
slug Converts the field to a slug
snake Snake Cases the data.
strip_alpha Strips all ascii characters from the data.
strip_alpha_unicode Strips all unicode characters from the data.
strip_num Strips all ascii numeric characters from the data.
strip_num_unicode Strips all unicode numeric characters from the data.
strip_punctuation Strips all ascii punctuation from the data.
title Title Cases the data.
tprefix Trims a prefix from the value using the provided param value.
trim Trims space from the data.
tsuffix Trims a suffix from the value using the provided param value.
ucase Uppercases the data.
ucfirst Upper cases the first character of the data.

Special Notes: default and set modifiers are special in that they can be used to set the value of a field or underlying type information or attributes and both use the same underlying function to set the data.

Setting a Param will have the following special effects on data types where it's not just the value being set:

  • Chan - param used to set the buffer size, default = 0.
  • Slice - param used to set the capacity, default = 0.
  • Map - param used to set the size, default = 0.
  • time.Time - param used to set the time format OR value, default = time.Now(), utc = time.Now().UTC(), other tries to parse using RFC3339Nano and set a time value.

Scrubbers

These functions obfuscate the specified types within the data for pii purposes.

Name Description
emails Scrubs multiple emails from data.
email Scrubs the data from and specifies the sha name of the same name.
text Scrubs the data from and specifies the sha name of the same name.
name Scrubs the data from and specifies the sha name of the same name.
fname Scrubs the data from and specifies the sha name of the same name.
lname Scrubs the data from and specifies the sha name of the same name.

Special Information

  • To use a comma(,) within your params replace use it's hex representation instead '0x2C' which will be replaced while caching.

Contributing

I am definitely interested in the communities help in adding more scrubbers and modifiers. Please send a PR with tests, and preferably no extra dependencies, at lease until a solid base has been built.

Complimentary Software

Here is a list of software that compliments using this library post decoding.

  • validator - Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving.
  • form - Decodes url.Values into Go value(s) and Encodes Go value(s) into url.Values. Dual Array and Full map support.

License

Distributed under MIT License, please see license file in code for more details.