stringtable

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Published: Dec 13, 2022 License: Apache-2.0 Imports: 8 Imported by: 0

README

String tables

String tables provide a solution for displaying localized messages in the client(s) with the ability to include graphics API specific details. Given that the clients are designed to be API-agnostic, these string tables are provided by the server to the clients via RPCs to form detailed messages.

String tables also provide support for rich-text formatting.

Interface

The client can query for the list of supported string tables using the GetAvailableStringTables RPC, which returns a list of available string tables based on culture codes.

The GetStringTable RPC retrieves the string table for the requested localization. Each string table holds a map of entry identifiers to a root Node.

A Msg represents a usage of a string table entry. It holds just two fields, the string table entry identifier and the list of arguments for any dynamic parameters:

type Msg struct {
  Identifier string                   // String table entry identifier.
  Arguments  map[string]binary.Object // Argument list.
}

When displaying a message, the client must lookup the string table entry from the active string table, and subsitute all parameter nodes with the corresponding argument type.

Nodes

A string table entry is a tree of Nodes, each representing a span of the message.

The following types are implementations of Node:

Block

A block node is a sequential container of other nodes. For string table entries with more than a single line of text, a block will often form the root node of the string table entry.

Text

A text node contains a localized text string.

This is a root node type.

LineBreak

A line break node represents a vertical gap in layout.

This is a root node type.

Whitespace

A whitespace node represents a horizontal gap in text layout.

This is a root node type.

Parameter

A parameter node represents a dynamic value parameter. These parameters are subsituted with the argument with the corresponding identifier.

A link node represents a dynamic value parameter hyper-link. A link node holds a node for the link text and another for the link target.

Bold

A bold node represents a section that should be displayed in bold.

Underlined

An underlined node represents a section that should be displayed underlined.

Heading

A heading node represents a section that should be displayed as a heading.

Code

A code node represents a block of code in a particular language.

List

A list node represents an unordered list.

Authoring

String tables are written in a subset of the markdown language, called 'minidown'.

Multiple string table entries can be declared in the same file, with each entry starting with a H1 header which declares the entry's identifier, followed by the entry's body:

# LOCALIZED_MESSAGE_ID_A

This is the localized body for message A.

# LOCALIZED_MESSAGE_ID_B

This is the localized body for message B.

Using the stringgen compiler, a number of .stb.md localization files can be compiled into a .stb binary localization file and a .go containing go helper functions for building messages. The example above would produce a helper .go file with the functions:

// LocalizedMessageIdA returns a LOCALIZED_MESSAGE_ID_A message with the
// provided arguments.
func LocalizedMessageIdA() *Msg { ... }

// LocalizedMessageIdB returns a LOCALIZED_MESSAGE_ID_B message with the
// provided arguments.
func LocalizedMessageIdB() *Msg { ... }
Parameters

Each entry's body also supports parameters for dynamic message content:

# MESSAGE_WITH_DYNAMIC_CONTENT

Hello {{person}}! How are you today?

These parameters become arguments to the go helper functions:

// MessageWithDynamicContent returns a MESSAGE_WITH_DYNAMIC_CONTENT message with
// the provided arguments.
func LocalizedMessageIdA(person interface{}) *Msg { ... }

Hyperlinks can be declared using the syntax:

# MESSAGE_WITH_LINKS

I love [fluffy kittens](https://www.google.co.uk/search?q=fluffy+kitten&tbm=isch)

Both the text and the target parts of the links can be parameterized:

# MESSAGE_WITH_DYNAMIC_LINK_TEXT

I love [{{fluffies}}](https://www.google.co.uk/search?q=fluffy+kitten&tbm=isch)

# MESSAGE_WITH_DYNAMIC_LINK_TARGET

I love [fluffy kittens]({{fluffy-link}})

# MESSAGE_WITH_DYNAMIC_LINK_TEXT_AND_TARGET

I love [{{fluffies}}]({{fluffy-link}})

Headers

Because the H1 header is reserved for declaring a new entry, use H2 headers for an H1 header, H3 for a H2 header. and so on:

# MESSAGE_WITH_HEADERS

## This is a H1 header
Blah blah blah

### This is a H2 header
Blah blah blah
Emphasis

*italic* displays as italic.

**bold** displays as bold.

_underline_ displays as underline.

# MESSAGE_WITH_EMPHASIS

I *really*, **really**, _really_ like emphasis!

Documentation

The Go Gopher

There is no documentation for this package.

Directories

Path Synopsis
Package minidown is a minimal-feature subset of the markdown language.
Package minidown is a minimal-feature subset of the markdown language.
node
Package node holds the syntax tree nodes for a parse minidown document.
Package node holds the syntax tree nodes for a parse minidown document.
parser
Package parser implements the minidown parser.
Package parser implements the minidown parser.
scanner
Package scanner implements the minidown token scanner.
Package scanner implements the minidown token scanner.
token
Package token holds the tokens generated my the minidown scanner.
Package token holds the tokens generated my the minidown scanner.

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