1 files changed, 152 insertions, 0 deletions
diff --git a/vendor/github.com/aws/aws-sdk-go/internal/ini/number_helper.go b/vendor/github.com/aws/aws-sdk-go/internal/ini/number_helper.go
new file mode 100644
index 000000000..a45c0bc56
--- /dev/null
+++ b/vendor/github.com/aws/aws-sdk-go/internal/ini/number_helper.go
@@ -0,0 +1,152 @@
+package ini
+
+import (
+	"bytes"
+	"fmt"
+	"strconv"
+)
+
+const (
+	none = numberFormat(iota)
+	binary
+	octal
+	decimal
+	hex
+	exponent
+)
+
+type numberFormat int
+
+// numberHelper is used to dictate what format a number is in
+// and what to do for negative values. Since -1e-4 is a valid
+// number, we cannot just simply check for duplicate negatives.
+type numberHelper struct {
+	numberFormat numberFormat
+
+	negative         bool
+	negativeExponent bool
+}
+
+func (b numberHelper) Exists() bool {
+	return b.numberFormat != none
+}
+
+func (b numberHelper) IsNegative() bool {
+	return b.negative || b.negativeExponent
+}
+
+func (b *numberHelper) Determine(c rune) error {
+	if b.Exists() {
+		return NewParseError(fmt.Sprintf("multiple number formats: 0%v", string(c)))
+	}
+
+	switch c {
+	case 'b':
+		b.numberFormat = binary
+	case 'o':
+		b.numberFormat = octal
+	case 'x':
+		b.numberFormat = hex
+	case 'e', 'E':
+		b.numberFormat = exponent
+	case '-':
+		if b.numberFormat != exponent {
+			b.negative = true
+		} else {
+			b.negativeExponent = true
+		}
+	case '.':
+		b.numberFormat = decimal
+	default:
+		return NewParseError(fmt.Sprintf("invalid number character: %v", string(c)))
+	}
+
+	return nil
+}
+
+func (b numberHelper) CorrectByte(c rune) bool {
+	switch {
+	case b.numberFormat == binary:
+		if !isBinaryByte(c) {
+			return false
+		}
+	case b.numberFormat == octal:
+		if !isOctalByte(c) {
+			return false
+		}
+	case b.numberFormat == hex:
+		if !isHexByte(c) {
+			return false
+		}
+	case b.numberFormat == decimal:
+		if !isDigit(c) {
+			return false
+		}
+	case b.numberFormat == exponent:
+		if !isDigit(c) {
+			return false
+		}
+	case b.negativeExponent:
+		if !isDigit(c) {
+			return false
+		}
+	case b.negative:
+		if !isDigit(c) {
+			return false
+		}
+	default:
+		if !isDigit(c) {
+			return false
+		}
+	}
+
+	return true
+}
+
+func (b numberHelper) Base() int {
+	switch b.numberFormat {
+	case binary:
+		return 2
+	case octal:
+		return 8
+	case hex:
+		return 16
+	default:
+		return 10
+	}
+}
+
+func (b numberHelper) String() string {
+	buf := bytes.Buffer{}
+	i := 0
+
+	switch b.numberFormat {
+	case binary:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": binary format\n")
+	case octal:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": octal format\n")
+	case hex:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": hex format\n")
+	case exponent:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": exponent format\n")
+	default:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": integer format\n")
+	}
+
+	if b.negative {
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": negative format\n")
+	}
+
+	if b.negativeExponent {
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": negative exponent format\n")
+	}
+
+	return buf.String()
+}