1 files changed, 269 insertions, 0 deletions
diff --git a/vendor/github.com/pelletier/go-toml/v2/scanner.go b/vendor/github.com/pelletier/go-toml/v2/scanner.go
new file mode 100644
index 00000000..bb445fab
--- /dev/null
+++ b/vendor/github.com/pelletier/go-toml/v2/scanner.go
@@ -0,0 +1,269 @@
+package toml
+
+func scanFollows(b []byte, pattern string) bool {
+	n := len(pattern)
+
+	return len(b) >= n && string(b[:n]) == pattern
+}
+
+func scanFollowsMultilineBasicStringDelimiter(b []byte) bool {
+	return scanFollows(b, `"""`)
+}
+
+func scanFollowsMultilineLiteralStringDelimiter(b []byte) bool {
+	return scanFollows(b, `'''`)
+}
+
+func scanFollowsTrue(b []byte) bool {
+	return scanFollows(b, `true`)
+}
+
+func scanFollowsFalse(b []byte) bool {
+	return scanFollows(b, `false`)
+}
+
+func scanFollowsInf(b []byte) bool {
+	return scanFollows(b, `inf`)
+}
+
+func scanFollowsNan(b []byte) bool {
+	return scanFollows(b, `nan`)
+}
+
+func scanUnquotedKey(b []byte) ([]byte, []byte) {
+	// unquoted-key = 1*( ALPHA / DIGIT / %x2D / %x5F ) ; A-Z / a-z / 0-9 / - / _
+	for i := 0; i < len(b); i++ {
+		if !isUnquotedKeyChar(b[i]) {
+			return b[:i], b[i:]
+		}
+	}
+
+	return b, b[len(b):]
+}
+
+func isUnquotedKeyChar(r byte) bool {
+	return (r >= 'A' && r <= 'Z') || (r >= 'a' && r <= 'z') || (r >= '0' && r <= '9') || r == '-' || r == '_'
+}
+
+func scanLiteralString(b []byte) ([]byte, []byte, error) {
+	// literal-string = apostrophe *literal-char apostrophe
+	// apostrophe = %x27 ; ' apostrophe
+	// literal-char = %x09 / %x20-26 / %x28-7E / non-ascii
+	for i := 1; i < len(b); {
+		switch b[i] {
+		case '\'':
+			return b[:i+1], b[i+1:], nil
+		case '\n', '\r':
+			return nil, nil, newDecodeError(b[i:i+1], "literal strings cannot have new lines")
+		}
+		size := utf8ValidNext(b[i:])
+		if size == 0 {
+			return nil, nil, newDecodeError(b[i:i+1], "invalid character")
+		}
+		i += size
+	}
+
+	return nil, nil, newDecodeError(b[len(b):], "unterminated literal string")
+}
+
+func scanMultilineLiteralString(b []byte) ([]byte, []byte, error) {
+	// ml-literal-string = ml-literal-string-delim [ newline ] ml-literal-body
+	// ml-literal-string-delim
+	// ml-literal-string-delim = 3apostrophe
+	// ml-literal-body = *mll-content *( mll-quotes 1*mll-content ) [ mll-quotes ]
+	//
+	// mll-content = mll-char / newline
+	// mll-char = %x09 / %x20-26 / %x28-7E / non-ascii
+	// mll-quotes = 1*2apostrophe
+	for i := 3; i < len(b); {
+		switch b[i] {
+		case '\'':
+			if scanFollowsMultilineLiteralStringDelimiter(b[i:]) {
+				i += 3
+
+				// At that point we found 3 apostrophe, and i is the
+				// index of the byte after the third one. The scanner
+				// needs to be eager, because there can be an extra 2
+				// apostrophe that can be accepted at the end of the
+				// string.
+
+				if i >= len(b) || b[i] != '\'' {
+					return b[:i], b[i:], nil
+				}
+				i++
+
+				if i >= len(b) || b[i] != '\'' {
+					return b[:i], b[i:], nil
+				}
+				i++
+
+				if i < len(b) && b[i] == '\'' {
+					return nil, nil, newDecodeError(b[i-3:i+1], "''' not allowed in multiline literal string")
+				}
+
+				return b[:i], b[i:], nil
+			}
+		case '\r':
+			if len(b) < i+2 {
+				return nil, nil, newDecodeError(b[len(b):], `need a \n after \r`)
+			}
+			if b[i+1] != '\n' {
+				return nil, nil, newDecodeError(b[i:i+2], `need a \n after \r`)
+			}
+			i += 2 // skip the \n
+			continue
+		}
+		size := utf8ValidNext(b[i:])
+		if size == 0 {
+			return nil, nil, newDecodeError(b[i:i+1], "invalid character")
+		}
+		i += size
+	}
+
+	return nil, nil, newDecodeError(b[len(b):], `multiline literal string not terminated by '''`)
+}
+
+func scanWindowsNewline(b []byte) ([]byte, []byte, error) {
+	const lenCRLF = 2
+	if len(b) < lenCRLF {
+		return nil, nil, newDecodeError(b, "windows new line expected")
+	}
+
+	if b[1] != '\n' {
+		return nil, nil, newDecodeError(b, `windows new line should be \r\n`)
+	}
+
+	return b[:lenCRLF], b[lenCRLF:], nil
+}
+
+func scanWhitespace(b []byte) ([]byte, []byte) {
+	for i := 0; i < len(b); i++ {
+		switch b[i] {
+		case ' ', '\t':
+			continue
+		default:
+			return b[:i], b[i:]
+		}
+	}
+
+	return b, b[len(b):]
+}
+
+//nolint:unparam
+func scanComment(b []byte) ([]byte, []byte, error) {
+	// comment-start-symbol = %x23 ; #
+	// non-ascii = %x80-D7FF / %xE000-10FFFF
+	// non-eol = %x09 / %x20-7F / non-ascii
+	//
+	// comment = comment-start-symbol *non-eol
+
+	for i := 1; i < len(b); {
+		if b[i] == '\n' {
+			return b[:i], b[i:], nil
+		}
+		if b[i] == '\r' {
+			if i+1 < len(b) && b[i+1] == '\n' {
+				return b[:i+1], b[i+1:], nil
+			}
+			return nil, nil, newDecodeError(b[i:i+1], "invalid character in comment")
+		}
+		size := utf8ValidNext(b[i:])
+		if size == 0 {
+			return nil, nil, newDecodeError(b[i:i+1], "invalid character in comment")
+		}
+
+		i += size
+	}
+
+	return b, b[len(b):], nil
+}
+
+func scanBasicString(b []byte) ([]byte, bool, []byte, error) {
+	// basic-string = quotation-mark *basic-char quotation-mark
+	// quotation-mark = %x22            ; "
+	// basic-char = basic-unescaped / escaped
+	// basic-unescaped = wschar / %x21 / %x23-5B / %x5D-7E / non-ascii
+	// escaped = escape escape-seq-char
+	escaped := false
+	i := 1
+
+	for ; i < len(b); i++ {
+		switch b[i] {
+		case '"':
+			return b[:i+1], escaped, b[i+1:], nil
+		case '\n', '\r':
+			return nil, escaped, nil, newDecodeError(b[i:i+1], "basic strings cannot have new lines")
+		case '\\':
+			if len(b) < i+2 {
+				return nil, escaped, nil, newDecodeError(b[i:i+1], "need a character after \\")
+			}
+			escaped = true
+			i++ // skip the next character
+		}
+	}
+
+	return nil, escaped, nil, newDecodeError(b[len(b):], `basic string not terminated by "`)
+}
+
+func scanMultilineBasicString(b []byte) ([]byte, bool, []byte, error) {
+	// ml-basic-string = ml-basic-string-delim [ newline ] ml-basic-body
+	// ml-basic-string-delim
+	// ml-basic-string-delim = 3quotation-mark
+	// ml-basic-body = *mlb-content *( mlb-quotes 1*mlb-content ) [ mlb-quotes ]
+	//
+	// mlb-content = mlb-char / newline / mlb-escaped-nl
+	// mlb-char = mlb-unescaped / escaped
+	// mlb-quotes = 1*2quotation-mark
+	// mlb-unescaped = wschar / %x21 / %x23-5B / %x5D-7E / non-ascii
+	// mlb-escaped-nl = escape ws newline *( wschar / newline )
+
+	escaped := false
+	i := 3
+
+	for ; i < len(b); i++ {
+		switch b[i] {
+		case '"':
+			if scanFollowsMultilineBasicStringDelimiter(b[i:]) {
+				i += 3
+
+				// At that point we found 3 apostrophe, and i is the
+				// index of the byte after the third one. The scanner
+				// needs to be eager, because there can be an extra 2
+				// apostrophe that can be accepted at the end of the
+				// string.
+
+				if i >= len(b) || b[i] != '"' {
+					return b[:i], escaped, b[i:], nil
+				}
+				i++
+
+				if i >= len(b) || b[i] != '"' {
+					return b[:i], escaped, b[i:], nil
+				}
+				i++
+
+				if i < len(b) && b[i] == '"' {
+					return nil, escaped, nil, newDecodeError(b[i-3:i+1], `""" not allowed in multiline basic string`)
+				}
+
+				return b[:i], escaped, b[i:], nil
+			}
+		case '\\':
+			if len(b) < i+2 {
+				return nil, escaped, nil, newDecodeError(b[len(b):], "need a character after \\")
+			}
+			escaped = true
+			i++ // skip the next character
+		case '\r':
+			if len(b) < i+2 {
+				return nil, escaped, nil, newDecodeError(b[len(b):], `need a \n after \r`)
+			}
+			if b[i+1] != '\n' {
+				return nil, escaped, nil, newDecodeError(b[i:i+2], `need a \n after \r`)
+			}
+			i++ // skip the \n
+		}
+	}
+
+	return nil, escaped, nil, newDecodeError(b[len(b):], `multiline basic string not terminated by """`)
+}