Start moving non-platform libraries from lib/ to pkg/ .

lib/i18n/lib/date_format_field.dart

Index: lib/i18n/lib/date_format_field.dart
===================================================================
--- lib/i18n/lib/date_format_field.dart	(revision 10654)
+++ lib/i18n/lib/date_format_field.dart	(working copy)
@@ -1,402 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-/**
- * This is a private class internal to DateFormat which is used for formatting
- * particular fields in a template. e.g. if the format is hh:mm:ss then the
- * fields would be "hh", ":", "mm", ":", and "ss". Each type of field knows
- * how to format that portion of a date.
- */
-class _DateFormatField {
-  /** The format string that defines us, e.g. "hh" */
-  String pattern;
-
-  /** The DateFormat that we are part of.*/
-  DateFormat parent;
-
-  _DateFormatField(this.pattern, this.parent);
-
-  /**
-   * Return the width of [pattern]. Different widths represent different
-   * formatting options. See the comment for DateFormat for details.
-   */
-  int get width() => pattern.length;
-
-  String fullPattern() => pattern;
-
-  String toString() => pattern;
-
-  /** Format date according to our specification and return the result. */
-  String format(Date date) {
-    // Default implementation in the superclass, works for both types of
-    // literal patterns, and is overridden by _DateFormatPatternField.
-    return pattern;
-  }
-
-  abstract void parse(_Stream input, _DateBuilder dateFields);
-
-  /** Parse a literal field. We just look for the exact input. */
-  void parseLiteral(_Stream input) {
-    var found = input.read(width);
-    if (found != pattern) {
-      throwFormatException(input);
-    }
-  }
-
-  /** Throw a format exception with an error message indicating the position.*/
-  void throwFormatException(_Stream stream) {
-    throw new FormatException("Trying to read $this from ${stream.contents} "
-        "at position ${stream.index}");
-  }
-}
-
-/**
- * Represents a literal field - a sequence of characters that doesn't
- * change according to the date's data. As such, the implementation
- * is extremely simple.
- */
-class _DateFormatLiteralField extends _DateFormatField {
-
-  _DateFormatLiteralField(pattern, parent): super(pattern, parent);
-
-  parse(_Stream input, _DateBuilder dateFields) {
-    return parseLiteral(input);
-  }
-}
-
-/**
- * Represents a literal field with quoted characters in it. This is
- * only slightly more complex than a _DateFormatLiteralField.
- */
-class _DateFormatQuotedField extends _DateFormatField {
-
-  String _fullPattern;
-
-  String fullPattern() => _fullPattern;
-
-  _DateFormatQuotedField(pattern, parent): super(pattern, parent) {
-    _fullPattern = pattern;
-    patchQuotes();
-  }
-
-  parse(_Stream input, _DateBuilder dateFields) {
-    return parseLiteral(input);
-  }
-
-  void patchQuotes() {
-     if (pattern == "''") {
-      pattern = "'";
-    } else {
-      pattern = pattern.substring(1, pattern.length - 1);
-      var twoEscapedQuotes = new RegExp(@"''");
-      pattern = pattern.replaceAll(twoEscapedQuotes, "'");
-    }
-  }
-}
-
-/*
- * Represents a field in the pattern that formats some aspect of the
- * date. Consists primarily of a switch on the particular pattern characters
- * to determine what to do.
- */
-class _DateFormatPatternField extends _DateFormatField {
-
-  _DateFormatPatternField(pattern, parent): super(pattern,  parent);
-
-  /** Format date according to our specification and return the result. */
-  String format(Date date) {
-      return formatField(date);
-  }
-
-  /**
-   * Parse the date according to our specification and put the result
-   * into the correct place in dateFields.
-   */
-  void parse(_Stream input, _DateBuilder dateFields) {
-    parseField(input, dateFields);
-  }
-
-  /**
-   * Parse a field representing part of a date pattern. Note that we do not
-   * return a value, but rather build up the result in [builder].
-   */
-  void parseField(_Stream input, _DateBuilder builder) {
-   try {
-     switch(pattern[0]) {
-       case 'a': parseAmPm(input, builder); break;
-       case 'c': parseStandaloneDay(input); break;
-       case 'd': handleNumericField(input, builder.setDay); break; // day
-       case 'E': parseDayOfWeek(input); break;
-       case 'G': break; // era
-       case 'h': parse1To12Hours(input, builder); break;
-       case 'H': handleNumericField(input, builder.setHour); break; // hour 0-23
-       case 'K': handleNumericField(input, builder.setHour); break; //hour 0-11
-       case 'k': handleNumericField(input, builder.setHour,-1); break; //hr 1-24
-       case 'L': parseStandaloneMonth(input, builder); break;
-       case 'M': parseMonth(input, builder); break;
-       case 'm': handleNumericField(input, builder.setMinute); break; // minutes
-       case 'Q': break; // quarter
-       case 'S': handleNumericField(input, builder.setFractionalSecond); break;
-       case 's': handleNumericField(input, builder.setSecond); break;
-       case 'v': break; // time zone id
-       case 'y': handleNumericField(input, builder.setYear); break;
-       case 'z': break; // time zone
-       case 'Z': break; // time zone RFC
-       default: return;
-     }
-   } catch (var e) { throwFormatException(input); }
- }
-
-  /** Formatting logic if we are of type FIELD */
-  String formatField(Date date) {
-     switch (pattern[0]) {
-      case 'a': return formatAmPm(date);
-      case 'c': return formatStandaloneDay(date);
-      case 'd': return formatDayOfMonth(date);
-      case 'E': return formatDayOfWeek(date);
-      case 'G': return formatEra(date);
-      case 'h': return format1To12Hours(date);
-      case 'H': return format0To23Hours(date);
-      case 'K': return format0To11Hours(date);
-      case 'k': return format24Hours(date);
-      case 'L': return formatStandaloneMonth(date);
-      case 'M': return formatMonth(date);
-      case 'm': return formatMinutes(date);
-      case 'Q': return formatQuarter(date);
-      case 'S': return formatFractionalSeconds(date);
-      case 's': return formatSeconds(date);
-      case 'v': return formatTimeZoneId(date);
-      case 'y': return formatYear(date);
-      case 'z': return formatTimeZone(date);
-      case 'Z': return formatTimeZoneRFC(date);
-      default: return '';
-    }
-  }
-
-  /** Return the symbols for our current locale. */
-  DateSymbols get symbols() => dateTimeSymbols[parent.locale];
-
-  formatEra(Date date) {
-    var era = date.year > 0 ? 1 : 0;
-    return width >= 4 ? symbols.ERANAMES[era] :
-                        symbols.ERAS[era];
-  }
-
-  formatYear(Date date) {
-    // TODO(alanknight): Proper handling of years <= 0
-    var year = date.year;
-    if (year < 0) {
-      year = -year;
-    }
-    return width == 2 ? padTo(2, year % 100) : year.toString();
-  }
-
-  /**
-   * We are given [input] as a stream from which we want to read a date. We
-   * can't dynamically build up a date, so we are given a list [dateFields] of
-   * the constructor arguments and an [position] at which to set it
-   * (year,month,day,hour,minute,second,fractionalSecond)
-   * then after all parsing is done we construct a date from the arguments.
-   * This method handles reading any of the numeric fields. The [offset]
-   * argument allows us to compensate for zero-based versus one-based values.
-   */
-  void handleNumericField(_Stream input, Function setter, [int offset = 0]) {
-    var result = input.nextInteger();
-    setter(result + offset);
-  }
-
-  /**
-   * We are given [input] as a stream from which we want to read a date. We
-   * can't dynamically build up a date, so we are given a list [dateFields] of
-   * the constructor arguments and an [position] at which to set it
-   * (year,month,day,hour,minute,second,fractionalSecond)
-   * then after all parsing is done we construct a date from the arguments.
-   * This method handles reading any of string fields from an enumerated set.
-   */
-   int parseEnumeratedString(_Stream input, List possibilities) {
-     var results = new _Stream(possibilities).findIndexes(
-       (each) => input.peek(each.length) == each);
-     if (results.isEmpty()) throwFormatException(input);
-     results.sort(
-       (a, b) => possibilities[a].length.compareTo(possibilities[b].length));
-     var longestResult = results.last();
-     input.read(possibilities[longestResult].length);
-     return longestResult;
-     }
-
-  String formatMonth(Date date) {
-    switch (width) {
-      case 5: return symbols.NARROWMONTHS[date.month-1];
-      case 4: return symbols.MONTHS[date.month-1];
-      case 3: return symbols.SHORTMONTHS[date.month-1];
-      default:
-        return padTo(width, date.month);
-    }
-  }
-
-  void parseMonth(input, dateFields) {
-    var possibilities;
-    switch(width) {
-      case 5: possibilities = symbols.NARROWMONTHS; break;
-      case 4: possibilities = symbols.MONTHS; break;
-      case 3: possibilities = symbols.SHORTMONTHS; break;
-      default: return handleNumericField(input, dateFields.setMonth);
-    }
-    dateFields.month = parseEnumeratedString(input, possibilities) + 1;
-  }
-
-  String format24Hours(Date date) {
-    return padTo(width, date.hour);
-  }
-
-  String formatFractionalSeconds(Date date) {
-    // Always print at least 3 digits. If the width is greater, append 0s
-    var basic = padTo(3, date.millisecond);
-    if (width - 3 > 0) {
-      var extra = padTo(width - 3, 0);
-      return basic.concat(extra);
-    } else {
-      return basic;
-    }
-  }
-
-  String formatAmPm(Date date) {
-    var hours = date.hour;
-    var index = (date.hour >= 12) && (date.hour < 24) ? 1 : 0;
-    var ampm = symbols.AMPMS;
-    return ampm[index];
-  }
-
-  void parseAmPm(input, dateFields) {
-    // If we see a "PM" note it in an extra field.
-    var ampm = parseEnumeratedString(input, symbols.AMPMS);
-    if (ampm == 1) dateFields.pm = true;
-  }
-
-  String format1To12Hours(Date date) {
-    var hours = date.hour;
-    if (date.hour > 12) hours = hours - 12;
-    if (hours == 0) hours = 12;
-    return padTo(width, hours);
-  }
-
-  void parse1To12Hours(_Stream input, _DateBuilder dateFields) {
-    handleNumericField(input, dateFields.setHour);
-    if (dateFields.hour == 12) dateFields.hour = 0;
-  }
-
-  String format0To11Hours(Date date) {
-    return padTo(width, date.hour % 12);
-  }
-
-  String format0To23Hours(Date date) {
-    return padTo(width, date.hour);
-  }
-
-  String formatStandaloneDay(Date date) {
-    switch (width) {
-      case 5: return symbols.STANDALONENARROWWEEKDAYS[date.weekday % 7];
-      case 4: return symbols.STANDALONEWEEKDAYS[date.weekday % 7];
-      case 3: return symbols.STANDALONESHORTWEEKDAYS[date.weekday % 7];
-      default:
-        return padTo(1, date.day);
-    }
-  }
-
-  void parseStandaloneDay(_Stream input) {
-    // This is ignored, but we still have to skip over it the correct amount.
-    var possibilities;
-    switch(width) {
-      case 5: possibilities = symbols.STANDALONENARROWWEEKDAYS; break;
-      case 4: possibilities = symbols.STANDALONEWEEKDAYS; break;
-      case 3: possibilities = symbols.STANDALONESHORTWEEKDAYS; break;
-      default: return handleNumericField(input, (x)=>x);
-    }
-    parseEnumeratedString(input, possibilities);
-  }
-
-  String formatStandaloneMonth(Date date) {
-  switch (width) {
-    case 5:
-      return symbols.STANDALONENARROWMONTHS[date.month-1];
-    case 4:
-      return symbols.STANDALONEMONTHS[date.month-1];
-    case 3:
-      return symbols.STANDALONESHORTMONTHS[date.month-1];
-    default:
-      return padTo(width, date.month);
-    }
-  }
-
-  void parseStandaloneMonth(input, dateFields) {
-    var possibilities;
-    switch(width) {
-      case 5: possibilities = symbols.STANDALONENARROWMONTHS; break;
-      case 4: possibilities = symbols.STANDALONEMONTHS; break;
-      case 3: possibilities = symbols.STANDALONESHORTMONTHS; break;
-      default: return handleNumericField(input, dateFields.setMonth);
-    }
-    dateFields.month = parseEnumeratedString(input, possibilities) + 1;
-  }
-
-  String formatQuarter(Date date) {
-    var quarter = (date.month / 3).truncate().toInt();
-    if (width < 4) {
-      return symbols.SHORTQUARTERS[quarter];
-    } else {
-      return symbols.QUARTERS[quarter];
-    }
-  }
-  String formatDayOfMonth(Date date) {
-    return padTo(width, date.day);
-  }
-
-  String formatDayOfWeek(Date date) {
-    // Note that Dart's weekday returns 1 for Monday and 7 for Sunday.
-    return (width >= 4 ? symbols.WEEKDAYS :
-                        symbols.SHORTWEEKDAYS)[(date.weekday) % 7];
-  }
-
-  void parseDayOfWeek(_Stream input) {
-    // This is IGNORED, but we still have to skip over it the correct amount.
-    var possibilities = width >= 4 ? symbols.WEEKDAYS : symbols.SHORTWEEKDAYS;
-    parseEnumeratedString(input, possibilities);
-  }
-
-  String formatMinutes(Date date) {
-    return padTo(width, date.minute);
-  }
-
-  String formatSeconds(Date date) {
-    return padTo(width, date.second);
-  }
-
-  String formatTimeZoneId(Date date) {
-    // TODO(alanknight): implement time zone support
-    throw new NotImplementedException();
-  }
-
-  String formatTimeZone(Date date) {
-    throw new NotImplementedException();
-  }
-
-  String formatTimeZoneRFC(Date date) {
-    throw new NotImplementedException();
-  }
-
- /**
-  * Return a string representation of the object padded to the left with
-  * zeros. Primarily useful for numbers.
-  */
-  String padTo(int width, Object toBePrinted) {
-    var basicString = toBePrinted.toString();
-    if (basicString.length >= width) return basicString;
-    var buffer = new StringBuffer();
-    for (var i = 0; i < width - basicString.length; i++) {
-      buffer.add('0');
-     }
-    buffer.add(basicString);
-    return buffer.toString();
-  }
-}