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-rw-r--r--vendor/github.com/pelletier/go-toml/v2/decode.go544
1 files changed, 544 insertions, 0 deletions
diff --git a/vendor/github.com/pelletier/go-toml/v2/decode.go b/vendor/github.com/pelletier/go-toml/v2/decode.go
new file mode 100644
index 00000000..4af96536
--- /dev/null
+++ b/vendor/github.com/pelletier/go-toml/v2/decode.go
@@ -0,0 +1,544 @@
+package toml
+
+import (
+ "fmt"
+ "math"
+ "strconv"
+ "time"
+)
+
+func parseInteger(b []byte) (int64, error) {
+ if len(b) > 2 && b[0] == '0' {
+ switch b[1] {
+ case 'x':
+ return parseIntHex(b)
+ case 'b':
+ return parseIntBin(b)
+ case 'o':
+ return parseIntOct(b)
+ default:
+ panic(fmt.Errorf("invalid base '%c', should have been checked by scanIntOrFloat", b[1]))
+ }
+ }
+
+ return parseIntDec(b)
+}
+
+func parseLocalDate(b []byte) (LocalDate, error) {
+ // full-date = date-fullyear "-" date-month "-" date-mday
+ // date-fullyear = 4DIGIT
+ // date-month = 2DIGIT ; 01-12
+ // date-mday = 2DIGIT ; 01-28, 01-29, 01-30, 01-31 based on month/year
+ var date LocalDate
+
+ if len(b) != 10 || b[4] != '-' || b[7] != '-' {
+ return date, newDecodeError(b, "dates are expected to have the format YYYY-MM-DD")
+ }
+
+ var err error
+
+ date.Year, err = parseDecimalDigits(b[0:4])
+ if err != nil {
+ return LocalDate{}, err
+ }
+
+ date.Month, err = parseDecimalDigits(b[5:7])
+ if err != nil {
+ return LocalDate{}, err
+ }
+
+ date.Day, err = parseDecimalDigits(b[8:10])
+ if err != nil {
+ return LocalDate{}, err
+ }
+
+ if !isValidDate(date.Year, date.Month, date.Day) {
+ return LocalDate{}, newDecodeError(b, "impossible date")
+ }
+
+ return date, nil
+}
+
+func parseDecimalDigits(b []byte) (int, error) {
+ v := 0
+
+ for i, c := range b {
+ if c < '0' || c > '9' {
+ return 0, newDecodeError(b[i:i+1], "expected digit (0-9)")
+ }
+ v *= 10
+ v += int(c - '0')
+ }
+
+ return v, nil
+}
+
+func parseDateTime(b []byte) (time.Time, error) {
+ // offset-date-time = full-date time-delim full-time
+ // full-time = partial-time time-offset
+ // time-offset = "Z" / time-numoffset
+ // time-numoffset = ( "+" / "-" ) time-hour ":" time-minute
+
+ dt, b, err := parseLocalDateTime(b)
+ if err != nil {
+ return time.Time{}, err
+ }
+
+ var zone *time.Location
+
+ if len(b) == 0 {
+ // parser should have checked that when assigning the date time node
+ panic("date time should have a timezone")
+ }
+
+ if b[0] == 'Z' || b[0] == 'z' {
+ b = b[1:]
+ zone = time.UTC
+ } else {
+ const dateTimeByteLen = 6
+ if len(b) != dateTimeByteLen {
+ return time.Time{}, newDecodeError(b, "invalid date-time timezone")
+ }
+ var direction int
+ switch b[0] {
+ case '-':
+ direction = -1
+ case '+':
+ direction = +1
+ default:
+ return time.Time{}, newDecodeError(b[:1], "invalid timezone offset character")
+ }
+
+ if b[3] != ':' {
+ return time.Time{}, newDecodeError(b[3:4], "expected a : separator")
+ }
+
+ hours, err := parseDecimalDigits(b[1:3])
+ if err != nil {
+ return time.Time{}, err
+ }
+ if hours > 23 {
+ return time.Time{}, newDecodeError(b[:1], "invalid timezone offset hours")
+ }
+
+ minutes, err := parseDecimalDigits(b[4:6])
+ if err != nil {
+ return time.Time{}, err
+ }
+ if minutes > 59 {
+ return time.Time{}, newDecodeError(b[:1], "invalid timezone offset minutes")
+ }
+
+ seconds := direction * (hours*3600 + minutes*60)
+ if seconds == 0 {
+ zone = time.UTC
+ } else {
+ zone = time.FixedZone("", seconds)
+ }
+ b = b[dateTimeByteLen:]
+ }
+
+ if len(b) > 0 {
+ return time.Time{}, newDecodeError(b, "extra bytes at the end of the timezone")
+ }
+
+ t := time.Date(
+ dt.Year,
+ time.Month(dt.Month),
+ dt.Day,
+ dt.Hour,
+ dt.Minute,
+ dt.Second,
+ dt.Nanosecond,
+ zone)
+
+ return t, nil
+}
+
+func parseLocalDateTime(b []byte) (LocalDateTime, []byte, error) {
+ var dt LocalDateTime
+
+ const localDateTimeByteMinLen = 11
+ if len(b) < localDateTimeByteMinLen {
+ return dt, nil, newDecodeError(b, "local datetimes are expected to have the format YYYY-MM-DDTHH:MM:SS[.NNNNNNNNN]")
+ }
+
+ date, err := parseLocalDate(b[:10])
+ if err != nil {
+ return dt, nil, err
+ }
+ dt.LocalDate = date
+
+ sep := b[10]
+ if sep != 'T' && sep != ' ' && sep != 't' {
+ return dt, nil, newDecodeError(b[10:11], "datetime separator is expected to be T or a space")
+ }
+
+ t, rest, err := parseLocalTime(b[11:])
+ if err != nil {
+ return dt, nil, err
+ }
+ dt.LocalTime = t
+
+ return dt, rest, nil
+}
+
+// parseLocalTime is a bit different because it also returns the remaining
+// []byte that is didn't need. This is to allow parseDateTime to parse those
+// remaining bytes as a timezone.
+func parseLocalTime(b []byte) (LocalTime, []byte, error) {
+ var (
+ nspow = [10]int{0, 1e8, 1e7, 1e6, 1e5, 1e4, 1e3, 1e2, 1e1, 1e0}
+ t LocalTime
+ )
+
+ // check if b matches to have expected format HH:MM:SS[.NNNNNN]
+ const localTimeByteLen = 8
+ if len(b) < localTimeByteLen {
+ return t, nil, newDecodeError(b, "times are expected to have the format HH:MM:SS[.NNNNNN]")
+ }
+
+ var err error
+
+ t.Hour, err = parseDecimalDigits(b[0:2])
+ if err != nil {
+ return t, nil, err
+ }
+
+ if t.Hour > 23 {
+ return t, nil, newDecodeError(b[0:2], "hour cannot be greater 23")
+ }
+ if b[2] != ':' {
+ return t, nil, newDecodeError(b[2:3], "expecting colon between hours and minutes")
+ }
+
+ t.Minute, err = parseDecimalDigits(b[3:5])
+ if err != nil {
+ return t, nil, err
+ }
+ if t.Minute > 59 {
+ return t, nil, newDecodeError(b[3:5], "minutes cannot be greater 59")
+ }
+ if b[5] != ':' {
+ return t, nil, newDecodeError(b[5:6], "expecting colon between minutes and seconds")
+ }
+
+ t.Second, err = parseDecimalDigits(b[6:8])
+ if err != nil {
+ return t, nil, err
+ }
+
+ if t.Second > 60 {
+ return t, nil, newDecodeError(b[6:8], "seconds cannot be greater 60")
+ }
+
+ b = b[8:]
+
+ if len(b) >= 1 && b[0] == '.' {
+ frac := 0
+ precision := 0
+ digits := 0
+
+ for i, c := range b[1:] {
+ if !isDigit(c) {
+ if i == 0 {
+ return t, nil, newDecodeError(b[0:1], "need at least one digit after fraction point")
+ }
+ break
+ }
+ digits++
+
+ const maxFracPrecision = 9
+ if i >= maxFracPrecision {
+ // go-toml allows decoding fractional seconds
+ // beyond the supported precision of 9
+ // digits. It truncates the fractional component
+ // to the supported precision and ignores the
+ // remaining digits.
+ //
+ // https://github.com/pelletier/go-toml/discussions/707
+ continue
+ }
+
+ frac *= 10
+ frac += int(c - '0')
+ precision++
+ }
+
+ if precision == 0 {
+ return t, nil, newDecodeError(b[:1], "nanoseconds need at least one digit")
+ }
+
+ t.Nanosecond = frac * nspow[precision]
+ t.Precision = precision
+
+ return t, b[1+digits:], nil
+ }
+ return t, b, nil
+}
+
+//nolint:cyclop
+func parseFloat(b []byte) (float64, error) {
+ if len(b) == 4 && (b[0] == '+' || b[0] == '-') && b[1] == 'n' && b[2] == 'a' && b[3] == 'n' {
+ return math.NaN(), nil
+ }
+
+ cleaned, err := checkAndRemoveUnderscoresFloats(b)
+ if err != nil {
+ return 0, err
+ }
+
+ if cleaned[0] == '.' {
+ return 0, newDecodeError(b, "float cannot start with a dot")
+ }
+
+ if cleaned[len(cleaned)-1] == '.' {
+ return 0, newDecodeError(b, "float cannot end with a dot")
+ }
+
+ dotAlreadySeen := false
+ for i, c := range cleaned {
+ if c == '.' {
+ if dotAlreadySeen {
+ return 0, newDecodeError(b[i:i+1], "float can have at most one decimal point")
+ }
+ if !isDigit(cleaned[i-1]) {
+ return 0, newDecodeError(b[i-1:i+1], "float decimal point must be preceded by a digit")
+ }
+ if !isDigit(cleaned[i+1]) {
+ return 0, newDecodeError(b[i:i+2], "float decimal point must be followed by a digit")
+ }
+ dotAlreadySeen = true
+ }
+ }
+
+ start := 0
+ if cleaned[0] == '+' || cleaned[0] == '-' {
+ start = 1
+ }
+ if cleaned[start] == '0' && isDigit(cleaned[start+1]) {
+ return 0, newDecodeError(b, "float integer part cannot have leading zeroes")
+ }
+
+ f, err := strconv.ParseFloat(string(cleaned), 64)
+ if err != nil {
+ return 0, newDecodeError(b, "unable to parse float: %w", err)
+ }
+
+ return f, nil
+}
+
+func parseIntHex(b []byte) (int64, error) {
+ cleaned, err := checkAndRemoveUnderscoresIntegers(b[2:])
+ if err != nil {
+ return 0, err
+ }
+
+ i, err := strconv.ParseInt(string(cleaned), 16, 64)
+ if err != nil {
+ return 0, newDecodeError(b, "couldn't parse hexadecimal number: %w", err)
+ }
+
+ return i, nil
+}
+
+func parseIntOct(b []byte) (int64, error) {
+ cleaned, err := checkAndRemoveUnderscoresIntegers(b[2:])
+ if err != nil {
+ return 0, err
+ }
+
+ i, err := strconv.ParseInt(string(cleaned), 8, 64)
+ if err != nil {
+ return 0, newDecodeError(b, "couldn't parse octal number: %w", err)
+ }
+
+ return i, nil
+}
+
+func parseIntBin(b []byte) (int64, error) {
+ cleaned, err := checkAndRemoveUnderscoresIntegers(b[2:])
+ if err != nil {
+ return 0, err
+ }
+
+ i, err := strconv.ParseInt(string(cleaned), 2, 64)
+ if err != nil {
+ return 0, newDecodeError(b, "couldn't parse binary number: %w", err)
+ }
+
+ return i, nil
+}
+
+func isSign(b byte) bool {
+ return b == '+' || b == '-'
+}
+
+func parseIntDec(b []byte) (int64, error) {
+ cleaned, err := checkAndRemoveUnderscoresIntegers(b)
+ if err != nil {
+ return 0, err
+ }
+
+ startIdx := 0
+
+ if isSign(cleaned[0]) {
+ startIdx++
+ }
+
+ if len(cleaned) > startIdx+1 && cleaned[startIdx] == '0' {
+ return 0, newDecodeError(b, "leading zero not allowed on decimal number")
+ }
+
+ i, err := strconv.ParseInt(string(cleaned), 10, 64)
+ if err != nil {
+ return 0, newDecodeError(b, "couldn't parse decimal number: %w", err)
+ }
+
+ return i, nil
+}
+
+func checkAndRemoveUnderscoresIntegers(b []byte) ([]byte, error) {
+ start := 0
+ if b[start] == '+' || b[start] == '-' {
+ start++
+ }
+
+ if len(b) == start {
+ return b, nil
+ }
+
+ if b[start] == '_' {
+ return nil, newDecodeError(b[start:start+1], "number cannot start with underscore")
+ }
+
+ if b[len(b)-1] == '_' {
+ return nil, newDecodeError(b[len(b)-1:], "number cannot end with underscore")
+ }
+
+ // fast path
+ i := 0
+ for ; i < len(b); i++ {
+ if b[i] == '_' {
+ break
+ }
+ }
+ if i == len(b) {
+ return b, nil
+ }
+
+ before := false
+ cleaned := make([]byte, i, len(b))
+ copy(cleaned, b)
+
+ for i++; i < len(b); i++ {
+ c := b[i]
+ if c == '_' {
+ if !before {
+ return nil, newDecodeError(b[i-1:i+1], "number must have at least one digit between underscores")
+ }
+ before = false
+ } else {
+ before = true
+ cleaned = append(cleaned, c)
+ }
+ }
+
+ return cleaned, nil
+}
+
+func checkAndRemoveUnderscoresFloats(b []byte) ([]byte, error) {
+ if b[0] == '_' {
+ return nil, newDecodeError(b[0:1], "number cannot start with underscore")
+ }
+
+ if b[len(b)-1] == '_' {
+ return nil, newDecodeError(b[len(b)-1:], "number cannot end with underscore")
+ }
+
+ // fast path
+ i := 0
+ for ; i < len(b); i++ {
+ if b[i] == '_' {
+ break
+ }
+ }
+ if i == len(b) {
+ return b, nil
+ }
+
+ before := false
+ cleaned := make([]byte, 0, len(b))
+
+ for i := 0; i < len(b); i++ {
+ c := b[i]
+
+ switch c {
+ case '_':
+ if !before {
+ return nil, newDecodeError(b[i-1:i+1], "number must have at least one digit between underscores")
+ }
+ if i < len(b)-1 && (b[i+1] == 'e' || b[i+1] == 'E') {
+ return nil, newDecodeError(b[i+1:i+2], "cannot have underscore before exponent")
+ }
+ before = false
+ case '+', '-':
+ // signed exponents
+ cleaned = append(cleaned, c)
+ before = false
+ case 'e', 'E':
+ if i < len(b)-1 && b[i+1] == '_' {
+ return nil, newDecodeError(b[i+1:i+2], "cannot have underscore after exponent")
+ }
+ cleaned = append(cleaned, c)
+ case '.':
+ if i < len(b)-1 && b[i+1] == '_' {
+ return nil, newDecodeError(b[i+1:i+2], "cannot have underscore after decimal point")
+ }
+ if i > 0 && b[i-1] == '_' {
+ return nil, newDecodeError(b[i-1:i], "cannot have underscore before decimal point")
+ }
+ cleaned = append(cleaned, c)
+ default:
+ before = true
+ cleaned = append(cleaned, c)
+ }
+ }
+
+ return cleaned, nil
+}
+
+// isValidDate checks if a provided date is a date that exists.
+func isValidDate(year int, month int, day int) bool {
+ return month > 0 && month < 13 && day > 0 && day <= daysIn(month, year)
+}
+
+// daysBefore[m] counts the number of days in a non-leap year
+// before month m begins. There is an entry for m=12, counting
+// the number of days before January of next year (365).
+var daysBefore = [...]int32{
+ 0,
+ 31,
+ 31 + 28,
+ 31 + 28 + 31,
+ 31 + 28 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31,
+}
+
+func daysIn(m int, year int) int {
+ if m == 2 && isLeap(year) {
+ return 29
+ }
+ return int(daysBefore[m] - daysBefore[m-1])
+}
+
+func isLeap(year int) bool {
+ return year%4 == 0 && (year%100 != 0 || year%400 == 0)
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 21:32:01 +0000