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authorBas van Kervel <basvankervel@gmail.com>2017-05-25 15:15:51 +0800
committerBas van Kervel <basvankervel@gmail.com>2017-05-25 15:15:51 +0800
commita346aedb90937de822e421cfa64405f9078af8a0 (patch)
tree38edc8f75e8294e7e36e6447945524c4a83b60b5 /cmd
parentef25b826e655f8e6a57fc7a05454bf356382bd5f (diff)
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cmd/geth: reorganise help section for new cli flag handling
Diffstat (limited to 'cmd')
-rw-r--r--cmd/geth/consolecmd.go2
-rw-r--r--cmd/geth/usage.go56
-rw-r--r--cmd/utils/flags.go24
3 files changed, 70 insertions, 12 deletions
diff --git a/cmd/geth/consolecmd.go b/cmd/geth/consolecmd.go
index 6efdbbf57..f8a923aac 100644
--- a/cmd/geth/consolecmd.go
+++ b/cmd/geth/consolecmd.go
@@ -30,9 +30,7 @@ import (
var (
consoleFlags = []cli.Flag{utils.JSpathFlag, utils.ExecFlag, utils.PreloadJSFlag}
-)
-var (
consoleCommand = cli.Command{
Action: utils.MigrateFlags(localConsole),
Name: "console",
diff --git a/cmd/geth/usage.go b/cmd/geth/usage.go
index c719a87b1..403e93a9d 100644
--- a/cmd/geth/usage.go
+++ b/cmd/geth/usage.go
@@ -20,6 +20,7 @@ package main
import (
"io"
+ "sort"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/internal/debug"
@@ -189,6 +190,39 @@ 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
@@ -198,6 +232,7 @@ func init() {
App interface{}
FlagGroups []flagGroup
}
+
// 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{}) {
@@ -227,6 +262,27 @@ func init() {
}
// Render out custom usage screen
originalHelpPrinter(w, tmpl, helpData{data, AppHelpFlagGroups})
+ } else if tmpl == utils.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)
+ }
+ }
+
+ // sort to get a stable ordering
+ sorted := make([]flagGroup, 0, len(categorized))
+ for cat, flgs := range categorized {
+ sorted = append(sorted, flagGroup{cat, flgs})
+ }
+ sort.Sort(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)
}
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index df37d40c9..863761e8c 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -56,6 +56,19 @@ import (
"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}}{{.cmd.Name}}{{with .cmd.ShortName}}, {{.cmd}}{{end}}{{ "\t" }}{{.cmd.Usage}}
+ {{end}}{{end}}{{if .categorizedFlags}}
+{{range $idx, $categorized := .categorizedFlags}}{{$categorized.Name}} OPTIONS:
+{{range $categorized.Flags}}{{"\t"}}{{.}}
+{{end}}
+{{end}}{{end}}`
+)
+
func init() {
cli.AppHelpTemplate = `{{.Name}} {{if .Flags}}[global options] {{end}}command{{if .Flags}} [command options]{{end}} [arguments...]
@@ -70,16 +83,7 @@ GLOBAL OPTIONS:
{{end}}{{end}}
`
- cli.CommandHelpTemplate = `{{.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}}
-`
+ cli.CommandHelpTemplate = CommandHelpTemplate
}
// NewApp creates an app with sane defaults.