A structure representing the alignment settings to apply when rendering a property.
Exemplo n.º 1
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        /// <summary>
        /// Construct a <see cref="PropertyToken"/>.
        /// </summary>
        /// <param name="propertyName">The name of the property.</param>
        /// <param name="rawText">The token as it appears in the message template.</param>
        /// <param name="format">The format applied to the property, if any.</param>
        /// <param name="alignment">The alignment applied to the property, if any.</param>
        /// <param name="destructuring">The destructuring strategy applied to the property, if any.</param>
        /// <exception cref="ArgumentNullException"></exception>
        public PropertyToken(string propertyName, string rawText, string format = null, Alignment? alignment = null, Destructuring destructuring = Destructuring.Default)
        {
            if (propertyName == null) throw new ArgumentNullException("propertyName");
            if (rawText == null) throw new ArgumentNullException("rawText");
            _propertyName = propertyName;
            _format = format;
            _destructuring = destructuring;
            _rawText = rawText;
            _alignment = alignment;

            int position;
            if (int.TryParse(_propertyName, NumberStyles.None, CultureInfo.InvariantCulture, out position) &&
                position >= 0)
            {
                _position = position;
            }
        }
Exemplo n.º 2
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        /// <summary>
        /// Writes the provided value to the output, applying direction-based padding when <paramref name="alignment"/> is provided.
        /// </summary>
        public static void Apply(TextWriter output, string value, Alignment? alignment)
        {
            if (!alignment.HasValue)
            {
                output.Write(value);
                return;
            }

            var pad = alignment.Value.Width - value.Length;

            if (alignment.Value.Direction == AlignmentDirection.Right)
                output.Write(new string(' ', pad));

            output.Write(value);

            if (alignment.Value.Direction == AlignmentDirection.Left)
                output.Write(new string(' ', pad));
        }
Exemplo n.º 3
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        /// <summary>
        /// Construct a <see cref="PropertyToken"/>.
        /// </summary>
        /// <param name="propertyName">The name of the property.</param>
        /// <param name="rawText">The token as it appears in the message template.</param>
        /// <param name="format">The format applied to the property, if any.</param>
        /// <param name="alignment">The alignment applied to the property, if any.</param>
        /// <param name="destructuring">The destructuring strategy applied to the property, if any.</param>
        /// <param name="startIndex">The token's start index in the template.</param>
        /// <exception cref="ArgumentNullException"></exception>
        public PropertyToken(string propertyName, string rawText, string format = null, Alignment? alignment = null, Destructuring destructuring = Destructuring.Default, int startIndex = -1)
            : base(startIndex)
        {
            if (propertyName == null) throw new ArgumentNullException(nameof(propertyName));
            if (rawText == null) throw new ArgumentNullException(nameof(rawText));
            PropertyName = propertyName;
            Format = format;
            Destructuring = destructuring;
            _rawText = rawText;
            Alignment = alignment;

            int position;
            if (int.TryParse(PropertyName, NumberStyles.None, CultureInfo.InvariantCulture, out position) &&
                position >= 0)
            {
                _position = position;
            }
        }
Exemplo n.º 4
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        static MessageTemplateToken ParsePropertyToken(int startAt, string messageTemplate, out int next)
        {
            var first = startAt;
            startAt++;
            while (startAt < messageTemplate.Length && IsValidInPropertyTag(messageTemplate[startAt]))
                startAt++;

            if (startAt == messageTemplate.Length || messageTemplate[startAt] != '}')
            {
                next = startAt;
                return new TextToken(messageTemplate.Substring(first, next - first), first);
            }

            next = startAt + 1;

            var rawText = messageTemplate.Substring(first, next - first);
            var tagContent = messageTemplate.Substring(first + 1, next - (first + 2));
            if (tagContent.Length == 0 ||
                !IsValidInPropertyTag(tagContent[0]))
                return new TextToken(rawText, first);

            string propertyNameAndDestructuring, format, alignment;
            if (!TrySplitTagContent(tagContent, out propertyNameAndDestructuring, out format, out alignment))
                return new TextToken(rawText, first);

            var propertyName = propertyNameAndDestructuring;
            Destructuring destructuring;
            if (TryGetDestructuringHint(propertyName[0], out destructuring))
                propertyName = propertyName.Substring(1);

            if (propertyName == "" || !IsValidInPropertyName(propertyName[0]))
                return new TextToken(rawText, first);

            for (var i = 0; i < propertyName.Length; ++i)
            {
                var c = propertyName[i];
                if (!IsValidInPropertyName(c))
                    return new TextToken(rawText, first);
            }

            if (format != null)
            {
                for (var i = 0; i < format.Length; ++i)
                {
                    var c = format[i];
                    if (!IsValidInFormat(c))
                        return new TextToken(rawText, first);
                }
            }

            Alignment? alignmentValue = null;
            if (alignment != null)
            {
                for (var i = 0; i < alignment.Length; ++i)
                {
                    var c = alignment[i];
                    if (!IsValidInAlignment(c))
                        return new TextToken(rawText, first);
                }

                var lastDash = alignment.LastIndexOf('-');
                if (lastDash > 0)
                    return new TextToken(rawText, first);

                var width = lastDash == -1 ?
                    int.Parse(alignment) :
                    int.Parse(alignment.Substring(1));

                if (width == 0)
                    return new TextToken(rawText, first);

                var direction = lastDash == -1 ?
                    AlignmentDirection.Right :
                    AlignmentDirection.Left;

                alignmentValue = new Alignment(direction, width);
            }

            return new PropertyToken(
                propertyName,
                rawText,
                format,
                alignmentValue,
                destructuring,
                first);
        }
Exemplo n.º 5
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        static MessageTemplateToken ParsePropertyToken(int startAt, string messageTemplate, out int next)
        {
            var first = startAt;

            startAt++;
            while (startAt < messageTemplate.Length && IsValidInPropertyTag(messageTemplate[startAt]))
            {
                startAt++;
            }

            if (startAt == messageTemplate.Length || messageTemplate[startAt] != '}')
            {
                next = startAt;
                return(new TextToken(messageTemplate.Substring(first, next - first), first));
            }

            next = startAt + 1;

            var rawText    = messageTemplate.Substring(first, next - first);
            var tagContent = rawText.Substring(1, next - (first + 2));

            if (tagContent.Length == 0)
            {
                return(new TextToken(rawText, first));
            }

            if (!TrySplitTagContent(tagContent, out var propertyNameAndDestructuring, out var format, out var alignment))
            {
                return(new TextToken(rawText, first));
            }

            var propertyName  = propertyNameAndDestructuring;
            var destructuring = Destructuring.Default;

            if (propertyName.Length != 0 && TryGetDestructuringHint(propertyName[0], out destructuring))
            {
                propertyName = propertyName.Substring(1);
            }

            if (propertyName.Length == 0)
            {
                return(new TextToken(rawText, first));
            }

            for (var i = 0; i < propertyName.Length; ++i)
            {
                var c = propertyName[i];
                if (!IsValidInPropertyName(c))
                {
                    return(new TextToken(rawText, first));
                }
            }

            if (format != null)
            {
                for (var i = 0; i < format.Length; ++i)
                {
                    var c = format[i];
                    if (!IsValidInFormat(c))
                    {
                        return(new TextToken(rawText, first));
                    }
                }
            }

            Alignment?alignmentValue = null;

            if (alignment != null)
            {
                for (var i = 0; i < alignment.Length; ++i)
                {
                    var c = alignment[i];
                    if (!IsValidInAlignment(c))
                    {
                        return(new TextToken(rawText, first));
                    }
                }

                var lastDash = alignment.LastIndexOf('-');
                if (lastDash > 0)
                {
                    return(new TextToken(rawText, first));
                }

                if (!int.TryParse(lastDash == -1 ? alignment : alignment.Substring(1), out var width) || width == 0)
                {
                    return(new TextToken(rawText, first));
                }

                var direction = lastDash == -1 ?
                                AlignmentDirection.Right :
                                AlignmentDirection.Left;

                alignmentValue = new Alignment(direction, width);
            }

            return(new PropertyToken(
                       propertyName,
                       rawText,
                       format,
                       alignmentValue,
                       destructuring,
                       first));
        }