Implement -Help, -Client, -Server and -Extra flags

Author: VojtechVitek

client.js.tmpl renamed to client.go.tmpl

@@ -0,0 +1,11 @@
+{{- define "help" -}}
+  {{- stderrPrintf "\n" -}}
+  {{- stderrPrintf "Available template options:\n" -}}
+  {{- range $k, $v := . -}}
+  {{- if eq (printf "%v" $v) "" }}
+    {{- stderrPrintf "  -%v\n" $k -}}
+  {{- else -}}
+    {{- stderrPrintf "  -%v=%q\n" $k $v -}}
+  {{- end -}}
+  {{- end -}}
+{{- end -}}

client_helpers.js.tmpl renamed to client_helpers.go.tmpl

@@ -0,0 +1,57 @@
+{{- define "main" -}}
+
+{{- if ne .WebrpcVersion "v1" -}}
+  {{- stderrPrintf "%s generator error: unsupported webrpc version %s\n" .WebrpcTarget .WebrpcVersion -}}
+  {{- exit 1 -}}
+{{- end -}}
+
+{{- if not (minVersion .WebrpcGenVersion "v0.7.0") -}}
+  {{- stderrPrintf "%s generator error: unsupported webrpc-gen version %s, please update\n" .WebrpcTarget .WebrpcGenVersion -}}
+  {{- exit 1 -}}
+{{- end -}}
+
+{{- /* Options with default values. */ -}}
+{{- $opts := dict -}}
+{{- set $opts "Client" (coalesce .Opts.Version false) -}}
+{{- set $opts "Server" (coalesce .Opts.Version false) -}}
+{{- set $opts "Extra" (coalesce .Opts.Extra "") -}}
+
+{{- /* Print help on -Help. */ -}}
+{{- if exists .Opts "Help" -}}
+  {{ template "help" $opts }}
+  {{- exit 0 -}}
+{{- end -}}
+
+{{- /* Print help on unsupported option. */ -}}
+{{- range $k, $v := .Opts }}
+  {{- if not (exists $opts $k) -}}
+    {{- stderrPrintf "  -%v=%q is not supported option\n" $k $v -}}
+    {{- template "help" $opts -}}
+    {{- exit 1 -}}
+  {{- end -}}
+{{- end -}}
+
+// {{.SchemaName}} {{.SchemaVersion}} {{.SchemaHash}}
+// --
+// Code generated by webrpc-gen@{{.WebrpcGenVersion}} with {{.WebrpcTarget}} generator. DO NOT EDIT.
+//
+// {{.WebrpcGenCommand}}
+
+// WebRPC description and code-gen version
+export const WebRPCVersion = "{{.WebrpcVersion}}"
+
+// Schema version of your RIDL schema
+export const WebRPCSchemaVersion = "{{.SchemaVersion}}"
+
+// Schema hash generated from your RIDL schema
+export const WebRPCSchemaHash = "{{.SchemaHash}}"
+
+{{template "types" .}}
+{{- if .Opts.Client}}
+  {{template "client" .}}
+  {{template "client_helpers" .}}
+{{- end}}
+{{- if .Opts.Server}}
+  {{template "server" .}}
+{{- end}}
+{{- end}}