cerc-io/plugeth
17
0
Fork 1
Code Issues 4 Pull Requests Packages Projects Releases Wiki Activity

cmd/clef: change --rpcport to --http.port and update flags in docs (#21318)

Browse Source
This commit is contained in:
rene 2020-07-14 10:35:32 +02:00 committed by GitHub
parent 6ef4495a8f
commit 5b081ab214
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 274 additions and 136 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
cmd/abigen/main.go
View File

@ -30,6 +30,7 @@ import (
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common/compiler"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/internal/flags"
"github.com/ethereum/go-ethereum/log"
"gopkg.in/urfave/cli.v1"
)
@ -100,7 +101,7 @@ var (
)
func init() {
app = utils.NewApp(gitCommit, gitDate, "ethereum checkpoint helper tool")
app = flags.NewApp(gitCommit, gitDate, "ethereum checkpoint helper tool")
app.Flags = []cli.Flag{
abiFlag,
binFlag,
@ -117,7 +118,7 @@ func init() {
aliasFlag,
}
app.Action = utils.MigrateFlags(abigen)
cli.CommandHelpTemplate = utils.OriginCommandHelpTemplate
cli.CommandHelpTemplate = flags.OriginCommandHelpTemplate
}
func abigen(c *cli.Context) error {

6
cmd/checkpoint-admin/main.go
View File

@ -22,8 +22,8 @@ import (
"fmt"
"os"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common/fdlimit"
"github.com/ethereum/go-ethereum/internal/flags"
"github.com/ethereum/go-ethereum/log"
"gopkg.in/urfave/cli.v1"
)
@ -37,7 +37,7 @@ var (
var app *cli.App
func init() {
app = utils.NewApp(gitCommit, gitDate, "ethereum checkpoint helper tool")
app = flags.NewApp(gitCommit, gitDate, "ethereum checkpoint helper tool")
app.Commands = []cli.Command{
commandStatus,
commandDeploy,
@ -48,7 +48,7 @@ func init() {
oracleFlag,
nodeURLFlag,
}
cli.CommandHelpTemplate = utils.OriginCommandHelpTemplate
cli.CommandHelpTemplate = flags.OriginCommandHelpTemplate
}
// Commonly used command line flags.

10
cmd/clef/README.md
View File

@ -33,12 +33,12 @@ GLOBAL OPTIONS:
--lightkdf Reduce key-derivation RAM & CPU usage at some expense of KDF strength
--nousb Disables monitoring for and managing USB hardware wallets
--pcscdpath value Path to the smartcard daemon (pcscd) socket file (default: "/run/pcscd/pcscd.comm")
--rpcaddr value HTTP-RPC server listening interface (default: "localhost")
--rpcvhosts value Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard. (default: "localhost")
--http.addr value HTTP-RPC server listening interface (default: "localhost")
--http.vhosts value Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard. (default: "localhost")
--ipcdisable Disable the IPC-RPC server
--ipcpath Filename for IPC socket/pipe within the datadir (explicit paths escape it)
--rpc Enable the HTTP-RPC server
--rpcport value HTTP-RPC server listening port (default: 8550)
--http Enable the HTTP-RPC server
--http.port value HTTP-RPC server listening port (default: 8550)
--signersecret value A file containing the (encrypted) master seed to encrypt Clef data, e.g. keystore credentials and ruleset hash
--4bytedb-custom value File used for writing new 4byte-identifiers submitted via API (default: "./4byte-custom.json")
--auditlog value File used to emit audit logs. Set to "" to disable (default: "audit.log")
@ -113,7 +113,7 @@ Some snags and todos
### External API
Clef listens to HTTP requests on `rpcaddr`:`rpcport` (or to IPC on `ipcpath`), with the same JSON-RPC standard as Geth. The messages are expected to be [JSON-RPC 2.0 standard](https://www.jsonrpc.org/specification).
Clef listens to HTTP requests on `http.addr`:`http.port` (or to IPC on `ipcpath`), with the same JSON-RPC standard as Geth. The messages are expected to be [JSON-RPC 2.0 standard](https://www.jsonrpc.org/specification).
Some of these calls can require user interaction. Clients must be aware that responses may be delayed significantly or may never be received if a user decides to ignore the confirmation request.

94
cmd/clef/main.go
View File

@ -32,6 +32,7 @@ import (
"os/user"
"path/filepath"
"runtime"
"sort"
"strings"
"time"
@ -43,6 +44,7 @@ import (
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/internal/ethapi"
"github.com/ethereum/go-ethereum/internal/flags"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/params"
@ -52,6 +54,7 @@ import (
"github.com/ethereum/go-ethereum/signer/fourbyte"
"github.com/ethereum/go-ethereum/signer/rules"
"github.com/ethereum/go-ethereum/signer/storage"
colorable "github.com/mattn/go-colorable"
"github.com/mattn/go-isatty"
"gopkg.in/urfave/cli.v1"
@ -101,10 +104,15 @@ var (
Usage: "Chain id to use for signing (1=mainnet, 3=Ropsten, 4=Rinkeby, 5=Goerli)",
}
rpcPortFlag = cli.IntFlag{
Name: "rpcport",
Name: "http.port",
Usage: "HTTP-RPC server listening port",
Value: node.DefaultHTTPPort + 5,
}
legacyRPCPortFlag = cli.IntFlag{
Name: "rpcport",
Usage: "HTTP-RPC server listening port (Deprecated, please use --http.port).",
Value: node.DefaultHTTPPort + 5,
}
signerSecretFlag = cli.StringFlag{
Name: "signersecret",
Usage: "A file containing the (encrypted) master seed to encrypt Clef data, e.g. keystore credentials and ruleset hash",
@ -215,6 +223,42 @@ The gendoc generates example structures of the json-rpc communication types.
`}
)
// AppHelpFlagGroups is the application flags, grouped by functionality.
var AppHelpFlagGroups = []flags.FlagGroup{
{
Name: "FLAGS",
Flags: []cli.Flag{
logLevelFlag,
keystoreFlag,
configdirFlag,
chainIdFlag,
utils.LightKDFFlag,
utils.NoUSBFlag,
utils.SmartCardDaemonPathFlag,
utils.HTTPListenAddrFlag,
utils.HTTPVirtualHostsFlag,
utils.IPCDisabledFlag,
utils.IPCPathFlag,
utils.HTTPEnabledFlag,
rpcPortFlag,
signerSecretFlag,
customDBFlag,
auditLogFlag,
ruleFlag,
stdiouiFlag,
testFlag,
advancedMode,
acceptFlag,
},
},
{
Name: "ALIASED (deprecated)",
Flags: []cli.Flag{
legacyRPCPortFlag,
},
},
}
func init() {
app.Name = "Clef"
app.Usage = "Manage Ethereum account operations"
@ -240,6 +284,7 @@ func init() {
testFlag,
advancedMode,
acceptFlag,
legacyRPCPortFlag,
}
app.Action = signer
app.Commands = []cli.Command{initCommand,
@ -248,7 +293,41 @@ func init() {
delCredentialCommand,
newAccountCommand,
gendocCommand}
cli.CommandHelpTemplate = utils.OriginCommandHelpTemplate
cli.CommandHelpTemplate = flags.CommandHelpTemplate
// Override the default app help template
cli.AppHelpTemplate = flags.ClefAppHelpTemplate
// Override the default app help printer, but only for the global app help
originalHelpPrinter := cli.HelpPrinter
cli.HelpPrinter = func(w io.Writer, tmpl string, data interface{}) {
if tmpl == flags.ClefAppHelpTemplate {
// Render out custom usage screen
originalHelpPrinter(w, tmpl, flags.HelpData{App: data, FlagGroups: AppHelpFlagGroups})
} else if tmpl == flags.CommandHelpTemplate {
// Iterate over all command specific flags and categorize them
categorized := make(map[string][]cli.Flag)
for _, flag := range data.(cli.Command).Flags {
if _, ok := categorized[flag.String()]; !ok {
categorized[flags.FlagCategory(flag, AppHelpFlagGroups)] = append(categorized[flags.FlagCategory(flag, AppHelpFlagGroups)], flag)
}
}
// sort to get a stable ordering
sorted := make([]flags.FlagGroup, 0, len(categorized))
for cat, flgs := range categorized {
sorted = append(sorted, flags.FlagGroup{Name: cat, Flags: flgs})
}
sort.Sort(flags.ByCategory(sorted))
// add sorted array to data and render with default printer
originalHelpPrinter(w, tmpl, map[string]interface{}{
"cmd": data,
"categorizedFlags": sorted,
})
} else {
originalHelpPrinter(w, tmpl, data)
}
}
}
func main() {
@ -597,8 +676,17 @@ func signer(c *cli.Context) error {
}
handler := node.NewHTTPHandlerStack(srv, cors, vhosts)
// set port
port := c.Int(rpcPortFlag.Name)
if c.GlobalIsSet(legacyRPCPortFlag.Name) {
if !c.GlobalIsSet(rpcPortFlag.Name) {
port = c.Int(legacyRPCPortFlag.Name)
}
log.Warn("The flag --rpcport is deprecated and will be removed in the future, please use --http.port")
}
// start http server
httpEndpoint := fmt.Sprintf("%s:%d", c.GlobalString(utils.HTTPListenAddrFlag.Name), c.Int(rpcPortFlag.Name))
httpEndpoint := fmt.Sprintf("%s:%d", c.GlobalString(utils.HTTPListenAddrFlag.Name), port)
httpServer, addr, err := node.StartHTTPEndpoint(httpEndpoint, rpc.DefaultHTTPTimeouts, handler)
if err != nil {
utils.Fatalf("Could not start RPC api: %v", err)

6
cmd/ethkey/main.go
View File

@ -20,7 +20,7 @@ import (
"fmt"
"os"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/internal/flags"
"gopkg.in/urfave/cli.v1"
)
@ -35,7 +35,7 @@ var gitDate = ""
var app *cli.App
func init() {
app = utils.NewApp(gitCommit, gitDate, "an Ethereum key manager")
app = flags.NewApp(gitCommit, gitDate, "an Ethereum key manager")
app.Commands = []cli.Command{
commandGenerate,
commandInspect,
@ -43,7 +43,7 @@ func init() {
commandSignMessage,
commandVerifyMessage,
}
cli.CommandHelpTemplate = utils.OriginCommandHelpTemplate
cli.CommandHelpTemplate = flags.OriginCommandHelpTemplate
}
// Commonly used command line flags.

5
cmd/evm/main.go
View File

@ -24,6 +24,7 @@ import (
"github.com/ethereum/go-ethereum/cmd/evm/internal/t8ntool"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/internal/flags"
"gopkg.in/urfave/cli.v1"
)
@ -31,7 +32,7 @@ var gitCommit = "" // Git SHA1 commit hash of the release (set via linker flags)
var gitDate = ""
var (
app = utils.NewApp(gitCommit, gitDate, "the evm command line interface")
app = flags.NewApp(gitCommit, gitDate, "the evm command line interface")
DebugFlag = cli.BoolFlag{
Name: "debug",
@ -180,7 +181,7 @@ func init() {
stateTestCommand,
stateTransitionCommand,
}
cli.CommandHelpTemplate = utils.OriginCommandHelpTemplate
cli.CommandHelpTemplate = flags.OriginCommandHelpTemplate
}
func main() {

3
cmd/geth/main.go
View File

@ -36,6 +36,7 @@ import (
"github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/internal/debug"
"github.com/ethereum/go-ethereum/internal/flags"
"github.com/ethereum/go-ethereum/les"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics"
@ -53,7 +54,7 @@ var (
gitCommit = ""
gitDate = ""
// The app that holds all commands and flags.
app = utils.NewApp(gitCommit, gitDate, "the go-ethereum command line interface")
app = flags.NewApp(gitCommit, gitDate, "the go-ethereum command line interface")
// flags that configure the node
nodeFlags = []cli.Flag{
utils.IdentityFlag,

91
cmd/geth/usage.go
View File

@ -24,44 +24,12 @@ import (
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/internal/debug"
"github.com/ethereum/go-ethereum/internal/flags"
cli "gopkg.in/urfave/cli.v1"
)
// AppHelpTemplate is the test template for the default, global app help topic.
var AppHelpTemplate = `NAME:
{{.App.Name}} - {{.App.Usage}}
Copyright 2013-2019 The go-ethereum Authors
USAGE:
{{.App.HelpName}} [options]{{if .App.Commands}} command [command options]{{end}} {{if .App.ArgsUsage}}{{.App.ArgsUsage}}{{else}}[arguments...]{{end}}
{{if .App.Version}}
VERSION:
{{.App.Version}}
{{end}}{{if len .App.Authors}}
AUTHOR(S):
{{range .App.Authors}}{{ . }}{{end}}
{{end}}{{if .App.Commands}}
COMMANDS:
{{range .App.Commands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}}
{{end}}{{end}}{{if .FlagGroups}}
{{range .FlagGroups}}{{.Name}} OPTIONS:
{{range .Flags}}{{.}}
{{end}}
{{end}}{{end}}{{if .App.Copyright }}
COPYRIGHT:
{{.App.Copyright}}
{{end}}
`
// flagGroup is a collection of flags belonging to a single topic.
type flagGroup struct {
Name string
Flags []cli.Flag
}
// AppHelpFlagGroups is the application flags, grouped by functionality.
var AppHelpFlagGroups = []flagGroup{
var AppHelpFlagGroups = []flags.FlagGroup{
{
Name: "ETHEREUM",
Flags: []cli.Flag{
@ -272,53 +240,14 @@ var AppHelpFlagGroups = []flagGroup{
},
}
// byCategory sorts an array of flagGroup by Name in the order
// defined in AppHelpFlagGroups.
type byCategory []flagGroup
func (a byCategory) Len() int { return len(a) }
func (a byCategory) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a byCategory) Less(i, j int) bool {
iCat, jCat := a[i].Name, a[j].Name
iIdx, jIdx := len(AppHelpFlagGroups), len(AppHelpFlagGroups) // ensure non categorized flags come last
for i, group := range AppHelpFlagGroups {
if iCat == group.Name {
iIdx = i
}
if jCat == group.Name {
jIdx = i
}
}
return iIdx < jIdx
}
func flagCategory(flag cli.Flag) string {
for _, category := range AppHelpFlagGroups {
for _, flg := range category.Flags {
if flg.GetName() == flag.GetName() {
return category.Name
}
}
}
return "MISC"
}
func init() {
// Override the default app help template
cli.AppHelpTemplate = AppHelpTemplate
// Define a one shot struct to pass to the usage template
type helpData struct {
App interface{}
FlagGroups []flagGroup
}
cli.AppHelpTemplate = flags.AppHelpTemplate
// Override the default app help printer, but only for the global app help
originalHelpPrinter := cli.HelpPrinter
cli.HelpPrinter = func(w io.Writer, tmpl string, data interface{}) {
if tmpl == AppHelpTemplate {
if tmpl == flags.AppHelpTemplate {
// Iterate over all the flags and add any uncategorized ones
categorized := make(map[string]struct{})
for _, group := range AppHelpFlagGroups {
@ -350,22 +279,22 @@ func init() {
}()
}
// Render out custom usage screen
originalHelpPrinter(w, tmpl, helpData{data, AppHelpFlagGroups})
} else if tmpl == utils.CommandHelpTemplate {
originalHelpPrinter(w, tmpl, flags.HelpData{App: data, FlagGroups: AppHelpFlagGroups})
} else if tmpl == flags.CommandHelpTemplate {
// Iterate over all command specific flags and categorize them
categorized := make(map[string][]cli.Flag)
for _, flag := range data.(cli.Command).Flags {
if _, ok := categorized[flag.String()]; !ok {
categorized[flagCategory(flag)] = append(categorized[flagCategory(flag)], flag)
categorized[flags.FlagCategory(flag, AppHelpFlagGroups)] = append(categorized[flags.FlagCategory(flag, AppHelpFlagGroups)], flag)
}
}
// sort to get a stable ordering
sorted := make([]flagGroup, 0, len(categorized))
sorted := make([]flags.FlagGroup, 0, len(categorized))
for cat, flgs := range categorized {
sorted = append(sorted, flagGroup{cat, flgs})
sorted = append(sorted, flags.FlagGroup{Name: cat, Flags: flgs})
}
sort.Sort(byCategory(sorted))
sort.Sort(flags.ByCategory(sorted))
// add sorted array to data and render with default printer
originalHelpPrinter(w, tmpl, map[string]interface{}{

38
cmd/utils/flags.go
View File

@ -48,6 +48,7 @@ import (
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/ethstats"
"github.com/ethereum/go-ethereum/graphql"
"github.com/ethereum/go-ethereum/internal/flags"
"github.com/ethereum/go-ethereum/les"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics"
@ -67,30 +68,6 @@ import (
cli "gopkg.in/urfave/cli.v1"
)
var (
CommandHelpTemplate = `{{.cmd.Name}}{{if .cmd.Subcommands}} command{{end}}{{if .cmd.Flags}} [command options]{{end}} [arguments...]
{{if .cmd.Description}}{{.cmd.Description}}
{{end}}{{if .cmd.Subcommands}}
SUBCOMMANDS:
{{range .cmd.Subcommands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
{{end}}{{end}}{{if .categorizedFlags}}
{{range $idx, $categorized := .categorizedFlags}}{{$categorized.Name}} OPTIONS:
{{range $categorized.Flags}}{{"\t"}}{{.}}
{{end}}
{{end}}{{end}}`
OriginCommandHelpTemplate = `{{.Name}}{{if .Subcommands}} command{{end}}{{if .Flags}} [command options]{{end}} [arguments...]
{{if .Description}}{{.Description}}
{{end}}{{if .Subcommands}}
SUBCOMMANDS:
{{range .Subcommands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
{{end}}{{end}}{{if .Flags}}
OPTIONS:
{{range $.Flags}} {{.}}
{{end}}
{{end}}`
)
func init() {
cli.AppHelpTemplate = `{{.Name}} {{if .Flags}}[global options] {{end}}command{{if .Flags}} [command options]{{end}} [arguments...]
@ -104,21 +81,10 @@ GLOBAL OPTIONS:
{{range .Flags}}{{.}}
{{end}}{{end}}
`
cli.CommandHelpTemplate = CommandHelpTemplate
cli.CommandHelpTemplate = flags.CommandHelpTemplate
cli.HelpPrinter = printHelp
}
// NewApp creates an app with sane defaults.
func NewApp(gitCommit, gitDate, usage string) *cli.App {
app := cli.NewApp()
app.Name = filepath.Base(os.Args[0])
app.Author = ""
app.Email = ""
app.Version = params.VersionWithCommit(gitCommit, gitDate)
app.Usage = usage
return app
}
func printHelp(out io.Writer, templ string, data interface{}) {
funcMap := template.FuncMap{"join": strings.Join}
t := template.Must(template.New("help").Funcs(funcMap).Parse(templ))

152
internal/flags/helpers.go Normal file
View File

@ -0,0 +1,152 @@
// Copyright 2020 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package flags
import (
"os"
"path/filepath"
"github.com/ethereum/go-ethereum/params"
cli "gopkg.in/urfave/cli.v1"
)
var (
CommandHelpTemplate = `{{.cmd.Name}}{{if .cmd.Subcommands}} command{{end}}{{if .cmd.Flags}} [command options]{{end}} [arguments...]
{{if .cmd.Description}}{{.cmd.Description}}
{{end}}{{if .cmd.Subcommands}}
SUBCOMMANDS:
{{range .cmd.Subcommands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
{{end}}{{end}}{{if .categorizedFlags}}
{{range $idx, $categorized := .categorizedFlags}}{{$categorized.Name}} OPTIONS:
{{range $categorized.Flags}}{{"\t"}}{{.}}
{{end}}
{{end}}{{end}}`
OriginCommandHelpTemplate = `{{.Name}}{{if .Subcommands}} command{{end}}{{if .Flags}} [command options]{{end}} [arguments...]
{{if .Description}}{{.Description}}
{{end}}{{if .Subcommands}}
SUBCOMMANDS:
{{range .Subcommands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
{{end}}{{end}}{{if .Flags}}
OPTIONS:
{{range $.Flags}} {{.}}
{{end}}
{{end}}`
// AppHelpTemplate is the test template for the default, global app help topic.
AppHelpTemplate = `NAME:
{{.App.Name}} - {{.App.Usage}}
Copyright 2013-2019 The go-ethereum Authors
USAGE:
{{.App.HelpName}} [options]{{if .App.Commands}} command [command options]{{end}} {{if .App.ArgsUsage}}{{.App.ArgsUsage}}{{else}}[arguments...]{{end}}
{{if .App.Version}}
VERSION:
{{.App.Version}}
{{end}}{{if len .App.Authors}}
AUTHOR(S):
{{range .App.Authors}}{{ . }}{{end}}
{{end}}{{if .App.Commands}}
COMMANDS:
{{range .App.Commands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}}
{{end}}{{end}}{{if .FlagGroups}}
{{range .FlagGroups}}{{.Name}} OPTIONS:
{{range .Flags}}{{.}}
{{end}}
{{end}}{{end}}{{if .App.Copyright }}
COPYRIGHT:
{{.App.Copyright}}
{{end}}
`
// ClefAppHelpTemplate is the template for the default, global app help topic.
ClefAppHelpTemplate = `NAME:
{{.App.Name}} - {{.App.Usage}}
Copyright 2013-2019 The go-ethereum Authors
USAGE:
{{.App.HelpName}} [options]{{if .App.Commands}} command [command options]{{end}} {{if .App.ArgsUsage}}{{.App.ArgsUsage}}{{else}}[arguments...]{{end}}
{{if .App.Version}}
COMMANDS:
{{range .App.Commands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}}
{{end}}{{end}}{{if .FlagGroups}}
{{range .FlagGroups}}{{.Name}} OPTIONS:
{{range .Flags}}{{.}}
{{end}}
{{end}}{{end}}{{if .App.Copyright }}
COPYRIGHT:
{{.App.Copyright}}
{{end}}
`
)
// HelpData is a one shot struct to pass to the usage template
type HelpData struct {
App interface{}
FlagGroups []FlagGroup
}
// FlagGroup is a collection of flags belonging to a single topic.
type FlagGroup struct {
Name string
Flags []cli.Flag
}
// byCategory sorts an array of FlagGroup by Name in the order
// defined in AppHelpFlagGroups.
type ByCategory []FlagGroup
func (a ByCategory) Len() int { return len(a) }
func (a ByCategory) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a ByCategory) Less(i, j int) bool {
iCat, jCat := a[i].Name, a[j].Name
iIdx, jIdx := len(a), len(a) // ensure non categorized flags come last
for i, group := range a {
if iCat == group.Name {
iIdx = i
}
if jCat == group.Name {
jIdx = i
}
}
return iIdx < jIdx
}
func FlagCategory(flag cli.Flag, flagGroups []FlagGroup) string {
for _, category := range flagGroups {
for _, flg := range category.Flags {
if flg.GetName() == flag.GetName() {
return category.Name
}
}
}
return "MISC"
}
// NewApp creates an app with sane defaults.
func NewApp(gitCommit, gitDate, usage string) *cli.App {
app := cli.NewApp()
app.Name = filepath.Base(os.Args[0])
app.Author = ""
app.Email = ""
app.Version = params.VersionWithCommit(gitCommit, gitDate)
app.Usage = usage
return app
}