lib-secs2-hsms-go

An SECS-II/HSMS library written in go.

Users might need some knowledge on Go, SEMI Standards, and SECS Message Language (SML) to use this library.

Usage

1. Install the library

   go get github.com/wolimst/lib-secs2-hsms-go

2. Import the packages and use them

   Example: using the SECS-II parser

   import (
       "github.com/wolimst/lib-secs2-hsms-go/pkg/ast"
       "github.com/wolimst/lib-secs2-hsms-go/pkg/parser/sml"
   )
   
   func main() {
       messages, errors, warnings := sml.Parse("S1F1 W\n.")
       // ...
   }

Features

1. Object representation of SECS-II/HSMS Message
2. SML Parser
3. HSMS Parser

Object representation of SECS-II/HSMS Message

SECS-II/HSMS messages can be represented using the objects implemented in this library.

The message and data item objects are implemented as following structure.
Multi-byte string data type such as JIS-8 is not supported currently.

HSMSMessage (Interface)
├── DataMessage
└── ControlMessage

ItemNode (Interface)
├── ASCIINode
├── BinaryNode
├── BooleanNode
├── FloatNode
├── IntNode
├── ListNode
└── UintNode

SML Parser

Parse SML format input string into DataMessage object.

Additional SML syntax

This library extends the default SML syntax, and support following additional syntax.
These additional syntax are optional; the default syntax can be parsed as well.

1. Message direction (H->E, H<-E or H<->E) can be specified after the wait bit.

   Example:

   S1F1 W H->E
   .
   

2. Message name can be specified after the message direction, or the wait bit if the message direction is not specified.
   Message name can be any unicode characters except the whitespace characters.

   Example:

   S1F1 W H->E AreYouThere?
   .
   

3. Line comment
   Any text between // and the end of the line is ignored by the parser. // in ASCII quoted string is not a comment.

   Example:

   S1F13 W // This is comment
   <L[2]
     <A MDLN>
     <A "1.0.0 // This is not a comment">
   >
   .
   

4. Arbitrary data item size

   Example:

   S5F11 W
   <L[4]
     <A[32] TIMESTAMP>  // size should be exactly 32 (SML default syntax)
     <A[5..20] EXID>    // size should be in range of 5..20 (SML default syntax)
     <A[..5] EXTYPE>    // size lower limit is 0, upper limit is 5
     <A[5..] EXMESSAGE> // size lower limit is 5, upper limit is not specified
   >
   .    
   

HSMS Parser

Parse HSMS byte sequence into DataMessage or ControlMessage object.

Example:
byte sequence 00 00 00 0A FF FF 00 00 00 05 FF FF FF FF will be parsed to a ControlMessage that represent linktest.req.