go-netfield

go-netfield provides tools for parsing "net fields", for the Go programming language — i.e., the type of fields found in HTTP headers & trailers, as well as SMTP headers.

Net-Fields look like this:

Content-Type: text/plain
Subject: Hello world!
Something: once
           twice
           thrice
           fource
Fruits:	apple banana cherry

Note that each line is terminated with a "\r\n".

Also note that multi-line net-fields are possible. To create a multi-line Net-Field, the beginning of the continuing field-body line must start with any type of linear-spacing.

Documention

Online documentation, which includes examples, can be found at: http://godoc.org/github.com/reiver/go-netfield

Examples

import "github.com/reiver/go-netfield"

// ...

fieldName, fieldBody, err := netfield.Parse(runescanner)

Linear Spacing

In IETF RFC822, the linear-spacing characters are defined by the definition for "LWSP-char":

LWSP-char   =  SPACE / HTAB

This package expands the definition of "LWSP-char" to embrace Unicode. And includes a number of other character.

• U+0009 — horizontal tab (␉)
• U+0020 — space (␠)
• U+1680 — ogham space mark
• U+180E — mongolian vowel separator
• U+2000 — en quad
• U+2001 — em quad
• U+2002 — en space
• U+2003 — em space
• U+2004 — three-per-em space
• U+2005 — four-per-em space
• U+2006 — six-per-em space
• U+2007 — figure space
• U+2008 — punctuation space
• U+2009 — thin space
• U+200A — hair space
• U+205F — medium mathematical space
• U+3000 — ideographic space