diff options
Diffstat (limited to 'vendor/github.com/tdewolff/parse/v2/strconv/int.go')
| -rw-r--r-- | vendor/github.com/tdewolff/parse/v2/strconv/int.go | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/vendor/github.com/tdewolff/parse/v2/strconv/int.go b/vendor/github.com/tdewolff/parse/v2/strconv/int.go deleted file mode 100644 index 1e9578eb5..000000000 --- a/vendor/github.com/tdewolff/parse/v2/strconv/int.go +++ /dev/null @@ -1,152 +0,0 @@ -package strconv - -import ( - "math" -) - -// ParseInt parses a byte-slice and returns the integer it represents. -// If an invalid character is encountered, it will stop there. -func ParseInt(b []byte) (int64, int) { - i := 0 - neg := false - if len(b) > 0 && (b[0] == '+' || b[0] == '-') { - neg = b[0] == '-' - i++ - } - start := i - n := uint64(0) - for i < len(b) { - c := b[i] - if '0' <= c && c <= '9' { - if uint64(-math.MinInt64)/10 < n || uint64(-math.MinInt64)-uint64(c-'0') < n*10 { - return 0, 0 - } - n *= 10 - n += uint64(c - '0') - } else { - break - } - i++ - } - if i == start { - return 0, 0 - } - if !neg && uint64(math.MaxInt64) < n { - return 0, 0 - } else if neg { - return -int64(n), i - } - return int64(n), i -} - -// ParseUint parses a byte-slice and returns the integer it represents. -// If an invalid character is encountered, it will stop there. -func ParseUint(b []byte) (uint64, int) { - i := 0 - n := uint64(0) - for i < len(b) { - c := b[i] - if '0' <= c && c <= '9' { - if math.MaxUint64/10 < n || math.MaxUint64-uint64(c-'0') < n*10 { - return 0, 0 - } - n *= 10 - n += uint64(c - '0') - } else { - break - } - i++ - } - return n, i -} - -// AppendInt will append an int64. -func AppendInt(b []byte, num int64) []byte { - if num == 0 { - return append(b, '0') - } else if num == -9223372036854775808 { - return append(b, "-9223372036854775808"...) - } - - // resize byte slice - i, n := len(b), LenInt(num) - if cap(b) < i+n { - b = append(b, make([]byte, n)...) - } else { - b = b[:i+n] - } - - // print sign - if num < 0 { - num = -num - b[i] = '-' - } - i += n - 1 - - // print number - for num != 0 { - b[i] = byte(num%10) + '0' - num /= 10 - i-- - } - return b -} - -// LenInt returns the written length of an integer. -func LenInt(i int64) int { - if i < 0 { - if i == -9223372036854775808 { - return 20 - } - return 1 + LenUint(uint64(-i)) - } - return LenUint(uint64(i)) -} - -func LenUint(i uint64) int { - switch { - case i < 10: - return 1 - case i < 100: - return 2 - case i < 1000: - return 3 - case i < 10000: - return 4 - case i < 100000: - return 5 - case i < 1000000: - return 6 - case i < 10000000: - return 7 - case i < 100000000: - return 8 - case i < 1000000000: - return 9 - case i < 10000000000: - return 10 - case i < 100000000000: - return 11 - case i < 1000000000000: - return 12 - case i < 10000000000000: - return 13 - case i < 100000000000000: - return 14 - case i < 1000000000000000: - return 15 - case i < 10000000000000000: - return 16 - case i < 100000000000000000: - return 17 - case i < 1000000000000000000: - return 18 - case i < 10000000000000000000: - return 19 - } - return 20 -} - -var int64pow10 = []int64{ - 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 10000000000, 100000000000, 1000000000000, 10000000000000, 100000000000000, 1000000000000000, 10000000000000000, 100000000000000000, 1000000000000000000, -} |
