97 lines
2.9 KiB
Go
97 lines
2.9 KiB
Go
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package pflag
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import "strconv"
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// -- count Value
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type countValue int
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func newCountValue(val int, p *int) *countValue {
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*p = val
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return (*countValue)(p)
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}
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func (i *countValue) Set(s string) error {
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// "+1" means that no specific value was passed, so increment
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if s == "+1" {
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*i = countValue(*i + 1)
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return nil
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}
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v, err := strconv.ParseInt(s, 0, 0)
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*i = countValue(v)
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return err
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}
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func (i *countValue) Type() string {
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return "count"
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}
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func (i *countValue) String() string { return strconv.Itoa(int(*i)) }
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func countConv(sval string) (interface{}, error) {
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i, err := strconv.Atoi(sval)
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if err != nil {
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return nil, err
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}
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return i, nil
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}
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// GetCount return the int value of a flag with the given name
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func (f *FlagSet) GetCount(name string) (int, error) {
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val, err := f.getFlagType(name, "count", countConv)
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if err != nil {
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return 0, err
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}
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return val.(int), nil
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}
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// CountVar defines a count flag with specified name, default value, and usage string.
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// The argument p points to an int variable in which to store the value of the flag.
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// A count flag will add 1 to its value every time it is found on the command line
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func (f *FlagSet) CountVar(p *int, name string, usage string) {
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f.CountVarP(p, name, "", usage)
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}
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// CountVarP is like CountVar only take a shorthand for the flag name.
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func (f *FlagSet) CountVarP(p *int, name, shorthand string, usage string) {
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flag := f.VarPF(newCountValue(0, p), name, shorthand, usage)
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flag.NoOptDefVal = "+1"
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}
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// CountVar like CountVar only the flag is placed on the CommandLine instead of a given flag set
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func CountVar(p *int, name string, usage string) {
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CommandLine.CountVar(p, name, usage)
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}
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// CountVarP is like CountVar only take a shorthand for the flag name.
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func CountVarP(p *int, name, shorthand string, usage string) {
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CommandLine.CountVarP(p, name, shorthand, usage)
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}
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// Count defines a count flag with specified name, default value, and usage string.
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// The return value is the address of an int variable that stores the value of the flag.
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// A count flag will add 1 to its value every time it is found on the command line
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func (f *FlagSet) Count(name string, usage string) *int {
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p := new(int)
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f.CountVarP(p, name, "", usage)
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return p
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}
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// CountP is like Count only takes a shorthand for the flag name.
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func (f *FlagSet) CountP(name, shorthand string, usage string) *int {
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p := new(int)
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f.CountVarP(p, name, shorthand, usage)
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return p
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}
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// Count defines a count flag with specified name, default value, and usage string.
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// The return value is the address of an int variable that stores the value of the flag.
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// A count flag will add 1 to its value evey time it is found on the command line
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func Count(name string, usage string) *int {
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return CommandLine.CountP(name, "", usage)
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}
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// CountP is like Count only takes a shorthand for the flag name.
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func CountP(name, shorthand string, usage string) *int {
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return CommandLine.CountP(name, shorthand, usage)
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}
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