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https://github.com/spf13/cobra
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parse lflags
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parent
55ff048a8d
commit
200e518356
1 changed files with 88 additions and 1 deletions
89
command.go
89
command.go
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@ -1767,6 +1767,91 @@ func (c *Command) persistentFlag(name string) (flag *flag.Flag) {
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return
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}
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func (c *Command) parseLongArgs(s string, args []string) (passedArgs, restArgs []string) {
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restArgs = args
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split := strings.SplitN(s[2:], "=", 2)
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name := split[0]
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searchedFlag := c.lflags.Lookup(name)
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if searchedFlag == nil {
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// a flag not registered in c.lflags should be registered in c.flags
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c.flags.VisitAll(func(f *flag.Flag) {
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if name == f.Name {
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if len(split) == 1 && f.NoOptDefVal == "" && len(args) > 0 {
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// '--flag arg'
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restArgs = args[1:]
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}
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return
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}
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})
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}
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passedArgs = append(passedArgs, fmt.Sprintf("--%s", name))
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if len(split) == 1 && searchedFlag.NoOptDefVal == "" && len(args) > 0 {
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passedArgs = append(passedArgs, args[0])
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restArgs = args[1:]
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}
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return
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}
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func (c *Command) parseShortArgs(s string, args []string) (passedArgs []string, restArgs []string) {
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restArgs = args
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shorthands := s[1:]
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shorthand := string(s[1])
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searchedFlag := c.lflags.ShorthandLookup(shorthand)
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if searchedFlag == nil {
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// a flag not registered in c.lflags should be registered in c.flags
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c.flags.VisitAll(func(f *flag.Flag) {
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if shorthand == f.Shorthand {
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if len(shorthands) == 1 && f.NoOptDefVal == "" && len(args) > 0 {
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// '-f arg'
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restArgs = args[1:]
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}
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}
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})
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return
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}
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passedArgs = append(passedArgs, s)
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if len(shorthands) == 1 && searchedFlag.NoOptDefVal == "" && len(args) > 0 {
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// '-f arg'
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passedArgs = append(passedArgs, args[0])
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restArgs = args[1:]
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}
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return
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}
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func (c *Command) removeParentPersistentArgs(args []string) []string {
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var newArgs []string
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for len(args) > 0 {
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s := args[0]
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args = args[1:]
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if s[0] != '-' {
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newArgs = append(newArgs, s)
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continue
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}
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var passedArgs, restArgs []string
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if s[1] == '-' {
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passedArgs, restArgs = c.parseLongArgs(s, args)
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} else {
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passedArgs, restArgs = c.parseShortArgs(s, args)
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}
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if len(passedArgs) > 0 {
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newArgs = append(newArgs, passedArgs...)
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}
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args = restArgs
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}
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return newArgs
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}
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// ParseFlags parses persistent flag tree and local flags.
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func (c *Command) ParseFlags(args []string) error {
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if c.DisableFlagParsing {
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@ -1790,7 +1875,9 @@ func (c *Command) ParseFlags(args []string) error {
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}
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// parse Local Flags
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err = c.LocalFlags().Parse(args)
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c.LocalFlags() // need to execute LocalFlags() to set the value in c.lflags before executing removeParentPersistentArgs
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localArgs := c.removeParentPersistentArgs(args) // get only arguments related to c.lflags
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err = c.lflags.Parse(localArgs)
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// Print warnings if they occurred (e.g. deprecated flag messages).
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if c.flagErrorBuf.Len()-beforeErrorBufLen > 0 && err == nil {
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c.Print(c.flagErrorBuf.String())
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