iTextSharp.text.pdf.PRTokeniser.ReadLineSegment C# (CSharp) Метод

        public bool ReadLineSegment(byte[] input) {
            int c = -1;
            bool eol = false;
            int ptr = 0;
            int len = input.Length;
            // ssteward, pdftk-1.10, 040922: 
            // skip initial whitespace; added this because PdfReader.RebuildXref()
            // assumes that line provided by readLineSegment does not have init. whitespace;
            if ( ptr < len ) {
                while ( IsWhitespace( (c = Read()) ) );
            }
            while ( !eol && ptr < len ) {
                switch (c) {
                    case -1:
                    case '\n':
                        eol = true;
                        break;
                    case '\r':
                        eol = true;
                        int cur = FilePointer;
                        if ((Read()) != '\n') {
                            Seek(cur);
                        }
                        break;
                    default:
                        input[ptr++] = (byte)c;
                        break;
                }

                // break loop? do it before we Read() again
                if ( eol || len <= ptr ) {
                    break;
                }
                else {
                    c = Read();
                }
            }
            if (ptr >= len) {
                eol = false;
                while (!eol) {
                    switch (c = Read()) {
                        case -1:
                        case '\n':
                            eol = true;
                            break;
                        case '\r':
                            eol = true;
                            int cur = FilePointer;
                            if ((Read()) != '\n') {
                                Seek(cur);
                            }
                            break;
                    }
                }
            }
            
            if ((c == -1) && (ptr == 0)) {
                return false;
            }
            if (ptr + 2 <= len) {
                input[ptr++] = (byte)' ';
                input[ptr] = (byte)'X';
            }
            return true;
        }