Initial commit

1 files changed, 111 insertions, 0 deletions

diff --git a/vendor/github.com/pborman/getopt/v2/unsigned.go b/vendor/github.com/pborman/getopt/v2/unsigned.go
new file mode 100644
index 0000000..5594660
--- /dev/null
+++ b/vendor/github.com/pborman/getopt/v2/unsigned.go
@@ -0,0 +1,111 @@
+// Copyright 2017 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package getopt
+
+import (
+	"fmt"
+	"strconv"
+	"sync"
+)
+
+type unsigned uint64
+
+type UnsignedLimit struct {
+	Base int    // Base for conversion as per strconv.ParseInt
+	Bits int    // Number of bits as per strconv.ParseInt
+	Min  uint64 // Minimum allowed value if both Min and Max are not 0
+	Max  uint64 // Maximum allowed value if both Min and Max are not 0
+}
+
+var (
+	unsignedLimitsMu sync.Mutex
+	unsignedLimits   = make(map[*unsigned]*UnsignedLimit)
+)
+
+func (n *unsigned) Set(value string, opt Option) error {
+	unsignedLimitsMu.Lock()
+	l := unsignedLimits[n]
+	unsignedLimitsMu.Unlock()
+	if l == nil {
+		return fmt.Errorf("no limits defined for %s", opt.Name())
+	}
+	v, err := strconv.ParseUint(value, l.Base, l.Bits)
+	if err != nil {
+		if e, ok := err.(*strconv.NumError); ok {
+			switch e.Err {
+			case strconv.ErrRange:
+				err = fmt.Errorf("value out of range: %s", value)
+			case strconv.ErrSyntax:
+				err = fmt.Errorf("not a valid number: %s", value)
+			}
+		}
+		return err
+	}
+	if l.Min != 0 || l.Max != 0 {
+		if v < l.Min {
+			return fmt.Errorf("value out of range (<%v): %s", l.Min, value)
+		}
+		if v > l.Max {
+			return fmt.Errorf("value out of range (>%v): %s", l.Max, value)
+		}
+	}
+	*n = unsigned(v)
+	return nil
+}
+
+func (n *unsigned) String() string {
+	unsignedLimitsMu.Lock()
+	l := unsignedLimits[n]
+	unsignedLimitsMu.Unlock()
+	if l != nil && l.Base != 0 {
+		return strconv.FormatUint(uint64(*n), l.Base)
+	}
+	return strconv.FormatUint(uint64(*n), 10)
+}
+
+// Unsigned creates an option that is stored in a uint64 and is
+// constrained by the limits pointed to by l.  The Max and Min values are only
+// used if at least one of the values are not 0.   If Base is 0, the base is
+// implied by the string's prefix: base 16 for "0x", base 8 for "0", and base
+// 10 otherwise.
+func Unsigned(name rune, value uint64, l *UnsignedLimit, helpvalue ...string) *uint64 {
+	CommandLine.unsignedOption(&value, "", name, l, helpvalue...)
+	return &value
+}
+
+func (s *Set) Unsigned(name rune, value uint64, l *UnsignedLimit, helpvalue ...string) *uint64 {
+	s.unsignedOption(&value, "", name, l, helpvalue...)
+	return &value
+}
+
+func UnsignedLong(name string, short rune, value uint64, l *UnsignedLimit, helpvalue ...string) *uint64 {
+	CommandLine.unsignedOption(&value, name, short, l, helpvalue...)
+	return &value
+}
+
+func (s *Set) UnsignedLong(name string, short rune, value uint64, l *UnsignedLimit, helpvalue ...string) *uint64 {
+	s.unsignedOption(&value, name, short, l, helpvalue...)
+	return &value
+}
+
+func (s *Set) unsignedOption(p *uint64, name string, short rune, l *UnsignedLimit, helpvalue ...string) {
+	opt := s.FlagLong((*unsigned)(p), name, short, helpvalue...)
+	if l.Base > 36 || l.Base == 1 || l.Base < 0 {
+		fmt.Fprintf(stderr, "invalid base for %s: %d\n", opt.Name(), l.Base)
+		exit(1)
+	}
+	if l.Bits < 0 || l.Bits > 64 {
+		fmt.Fprintf(stderr, "invalid bit size for %s: %d\n", opt.Name(), l.Bits)
+		exit(1)
+	}
+	if l.Min > l.Max {
+		fmt.Fprintf(stderr, "min greater than max for %s\n", opt.Name())
+		exit(1)
+	}
+	lim := *l
+	unsignedLimitsMu.Lock()
+	unsignedLimits[(*unsigned)(p)] = &lim
+	unsignedLimitsMu.Unlock()
+}