Index: icu46/source/i18n/unicode/decimfmt.h |
=================================================================== |
--- icu46/source/i18n/unicode/decimfmt.h (revision 0) |
+++ icu46/source/i18n/unicode/decimfmt.h (revision 0) |
@@ -0,0 +1,2310 @@ |
+/* |
+******************************************************************************** |
+* Copyright (C) 1997-2010, International Business Machines |
+* Corporation and others. All Rights Reserved. |
+******************************************************************************** |
+* |
+* File DECIMFMT.H |
+* |
+* Modification History: |
+* |
+* Date Name Description |
+* 02/19/97 aliu Converted from java. |
+* 03/20/97 clhuang Updated per C++ implementation. |
+* 04/03/97 aliu Rewrote parsing and formatting completely, and |
+* cleaned up and debugged. Actually works now. |
+* 04/17/97 aliu Changed DigitCount to int per code review. |
+* 07/10/97 helena Made ParsePosition a class and get rid of the function |
+* hiding problems. |
+* 09/09/97 aliu Ported over support for exponential formats. |
+* 07/20/98 stephen Changed documentation |
+******************************************************************************** |
+*/ |
+ |
+#ifndef DECIMFMT_H |
+#define DECIMFMT_H |
+ |
+#include "unicode/utypes.h" |
+/** |
+ * \file |
+ * \brief C++ API: Formats decimal numbers. |
+ */ |
+ |
+#if !UCONFIG_NO_FORMATTING |
+ |
+#include "unicode/dcfmtsym.h" |
+#include "unicode/numfmt.h" |
+#include "unicode/locid.h" |
+#include "unicode/fpositer.h" |
+#include "unicode/stringpiece.h" |
+ |
+union UHashTok; |
+ |
+U_NAMESPACE_BEGIN |
+ |
+class DigitList; |
+class ChoiceFormat; |
+class CurrencyPluralInfo; |
+class Hashtable; |
+class FieldPositionHandler; |
+ |
+/** |
+ * DecimalFormat is a concrete subclass of NumberFormat that formats decimal |
+ * numbers. It has a variety of features designed to make it possible to parse |
+ * and format numbers in any locale, including support for Western, Arabic, or |
+ * Indic digits. It also supports different flavors of numbers, including |
+ * integers ("123"), fixed-point numbers ("123.4"), scientific notation |
+ * ("1.23E4"), percentages ("12%"), and currency amounts ("$123", "USD123", |
+ * "123 US dollars"). All of these flavors can be easily localized. |
+ * |
+ * <p>To obtain a NumberFormat for a specific locale (including the default |
+ * locale) call one of NumberFormat's factory methods such as |
+ * createInstance(). Do not call the DecimalFormat constructors directly, unless |
+ * you know what you are doing, since the NumberFormat factory methods may |
+ * return subclasses other than DecimalFormat. |
+ * |
+ * <p><strong>Example Usage</strong> |
+ * |
+ * \code |
+ * // Normally we would have a GUI with a menu for this |
+ * int32_t locCount; |
+ * const Locale* locales = NumberFormat::getAvailableLocales(locCount); |
+ * |
+ * double myNumber = -1234.56; |
+ * UErrorCode success = U_ZERO_ERROR; |
+ * NumberFormat* form; |
+ * |
+ * // Print out a number with the localized number, currency and percent |
+ * // format for each locale. |
+ * UnicodeString countryName; |
+ * UnicodeString displayName; |
+ * UnicodeString str; |
+ * UnicodeString pattern; |
+ * Formattable fmtable; |
+ * for (int32_t j = 0; j < 3; ++j) { |
+ * cout << endl << "FORMAT " << j << endl; |
+ * for (int32_t i = 0; i < locCount; ++i) { |
+ * if (locales[i].getCountry(countryName).size() == 0) { |
+ * // skip language-only |
+ * continue; |
+ * } |
+ * switch (j) { |
+ * case 0: |
+ * form = NumberFormat::createInstance(locales[i], success ); break; |
+ * case 1: |
+ * form = NumberFormat::createCurrencyInstance(locales[i], success ); break; |
+ * default: |
+ * form = NumberFormat::createPercentInstance(locales[i], success ); break; |
+ * } |
+ * if (form) { |
+ * str.remove(); |
+ * pattern = ((DecimalFormat*)form)->toPattern(pattern); |
+ * cout << locales[i].getDisplayName(displayName) << ": " << pattern; |
+ * cout << " -> " << form->format(myNumber,str) << endl; |
+ * form->parse(form->format(myNumber,str), fmtable, success); |
+ * delete form; |
+ * } |
+ * } |
+ * } |
+ * \endcode |
+ * <P> |
+ * Another example use createInstance(style) |
+ * <P> |
+ * <pre> |
+ * <strong>// Print out a number using the localized number, currency, |
+ * // percent, scientific, integer, iso currency, and plural currency |
+ * // format for each locale</strong> |
+ * Locale* locale = new Locale("en", "US"); |
+ * double myNumber = 1234.56; |
+ * UErrorCode success = U_ZERO_ERROR; |
+ * UnicodeString str; |
+ * Formattable fmtable; |
+ * for (int j=NumberFormat::kNumberStyle; |
+ * j<=NumberFormat::kPluralCurrencyStyle; |
+ * ++j) { |
+ * NumberFormat* format = NumberFormat::createInstance(locale, j, success); |
+ * str.remove(); |
+ * cout << "format result " << form->format(myNumber, str) << endl; |
+ * format->parse(form->format(myNumber, str), fmtable, success); |
+ * }</pre> |
+ * |
+ * |
+ * <p><strong>Patterns</strong> |
+ * |
+ * <p>A DecimalFormat consists of a <em>pattern</em> and a set of |
+ * <em>symbols</em>. The pattern may be set directly using |
+ * applyPattern(), or indirectly using other API methods which |
+ * manipulate aspects of the pattern, such as the minimum number of integer |
+ * digits. The symbols are stored in a DecimalFormatSymbols |
+ * object. When using the NumberFormat factory methods, the |
+ * pattern and symbols are read from ICU's locale data. |
+ * |
+ * <p><strong>Special Pattern Characters</strong> |
+ * |
+ * <p>Many characters in a pattern are taken literally; they are matched during |
+ * parsing and output unchanged during formatting. Special characters, on the |
+ * other hand, stand for other characters, strings, or classes of characters. |
+ * For example, the '#' character is replaced by a localized digit. Often the |
+ * replacement character is the same as the pattern character; in the U.S. locale, |
+ * the ',' grouping character is replaced by ','. However, the replacement is |
+ * still happening, and if the symbols are modified, the grouping character |
+ * changes. Some special characters affect the behavior of the formatter by |
+ * their presence; for example, if the percent character is seen, then the |
+ * value is multiplied by 100 before being displayed. |
+ * |
+ * <p>To insert a special character in a pattern as a literal, that is, without |
+ * any special meaning, the character must be quoted. There are some exceptions to |
+ * this which are noted below. |
+ * |
+ * <p>The characters listed here are used in non-localized patterns. Localized |
+ * patterns use the corresponding characters taken from this formatter's |
+ * DecimalFormatSymbols object instead, and these characters lose |
+ * their special status. Two exceptions are the currency sign and quote, which |
+ * are not localized. |
+ * |
+ * <table border=0 cellspacing=3 cellpadding=0> |
+ * <tr bgcolor="#ccccff"> |
+ * <td align=left><strong>Symbol</strong> |
+ * <td align=left><strong>Location</strong> |
+ * <td align=left><strong>Localized?</strong> |
+ * <td align=left><strong>Meaning</strong> |
+ * <tr valign=top> |
+ * <td><code>0</code> |
+ * <td>Number |
+ * <td>Yes |
+ * <td>Digit |
+ * <tr valign=top bgcolor="#eeeeff"> |
+ * <td><code>1-9</code> |
+ * <td>Number |
+ * <td>Yes |
+ * <td>'1' through '9' indicate rounding. |
+ * <tr valign=top> |
+ * <td><code>\htmlonly@\endhtmlonly</code> <!--doxygen doesn't like @--> |
+ * <td>Number |
+ * <td>No |
+ * <td>Significant digit |
+ * <tr valign=top bgcolor="#eeeeff"> |
+ * <td><code>#</code> |
+ * <td>Number |
+ * <td>Yes |
+ * <td>Digit, zero shows as absent |
+ * <tr valign=top> |
+ * <td><code>.</code> |
+ * <td>Number |
+ * <td>Yes |
+ * <td>Decimal separator or monetary decimal separator |
+ * <tr valign=top bgcolor="#eeeeff"> |
+ * <td><code>-</code> |
+ * <td>Number |
+ * <td>Yes |
+ * <td>Minus sign |
+ * <tr valign=top> |
+ * <td><code>,</code> |
+ * <td>Number |
+ * <td>Yes |
+ * <td>Grouping separator |
+ * <tr valign=top bgcolor="#eeeeff"> |
+ * <td><code>E</code> |
+ * <td>Number |
+ * <td>Yes |
+ * <td>Separates mantissa and exponent in scientific notation. |
+ * <em>Need not be quoted in prefix or suffix.</em> |
+ * <tr valign=top> |
+ * <td><code>+</code> |
+ * <td>Exponent |
+ * <td>Yes |
+ * <td>Prefix positive exponents with localized plus sign. |
+ * <em>Need not be quoted in prefix or suffix.</em> |
+ * <tr valign=top bgcolor="#eeeeff"> |
+ * <td><code>;</code> |
+ * <td>Subpattern boundary |
+ * <td>Yes |
+ * <td>Separates positive and negative subpatterns |
+ * <tr valign=top> |
+ * <td><code>\%</code> |
+ * <td>Prefix or suffix |
+ * <td>Yes |
+ * <td>Multiply by 100 and show as percentage |
+ * <tr valign=top bgcolor="#eeeeff"> |
+ * <td><code>\\u2030</code> |
+ * <td>Prefix or suffix |
+ * <td>Yes |
+ * <td>Multiply by 1000 and show as per mille |
+ * <tr valign=top> |
+ * <td><code>\htmlonly¤\endhtmlonly</code> (<code>\\u00A4</code>) |
+ * <td>Prefix or suffix |
+ * <td>No |
+ * <td>Currency sign, replaced by currency symbol. If |
+ * doubled, replaced by international currency symbol. |
+ * If tripled, replaced by currency plural names, for example, |
+ * "US dollar" or "US dollars" for America. |
+ * If present in a pattern, the monetary decimal separator |
+ * is used instead of the decimal separator. |
+ * <tr valign=top bgcolor="#eeeeff"> |
+ * <td><code>'</code> |
+ * <td>Prefix or suffix |
+ * <td>No |
+ * <td>Used to quote special characters in a prefix or suffix, |
+ * for example, <code>"'#'#"</code> formats 123 to |
+ * <code>"#123"</code>. To create a single quote |
+ * itself, use two in a row: <code>"# o''clock"</code>. |
+ * <tr valign=top> |
+ * <td><code>*</code> |
+ * <td>Prefix or suffix boundary |
+ * <td>Yes |
+ * <td>Pad escape, precedes pad character |
+ * </table> |
+ * |
+ * <p>A DecimalFormat pattern contains a postive and negative |
+ * subpattern, for example, "#,##0.00;(#,##0.00)". Each subpattern has a |
+ * prefix, a numeric part, and a suffix. If there is no explicit negative |
+ * subpattern, the negative subpattern is the localized minus sign prefixed to the |
+ * positive subpattern. That is, "0.00" alone is equivalent to "0.00;-0.00". If there |
+ * is an explicit negative subpattern, it serves only to specify the negative |
+ * prefix and suffix; the number of digits, minimal digits, and other |
+ * characteristics are ignored in the negative subpattern. That means that |
+ * "#,##0.0#;(#)" has precisely the same result as "#,##0.0#;(#,##0.0#)". |
+ * |
+ * <p>The prefixes, suffixes, and various symbols used for infinity, digits, |
+ * thousands separators, decimal separators, etc. may be set to arbitrary |
+ * values, and they will appear properly during formatting. However, care must |
+ * be taken that the symbols and strings do not conflict, or parsing will be |
+ * unreliable. For example, either the positive and negative prefixes or the |
+ * suffixes must be distinct for parse() to be able |
+ * to distinguish positive from negative values. Another example is that the |
+ * decimal separator and thousands separator should be distinct characters, or |
+ * parsing will be impossible. |
+ * |
+ * <p>The <em>grouping separator</em> is a character that separates clusters of |
+ * integer digits to make large numbers more legible. It commonly used for |
+ * thousands, but in some locales it separates ten-thousands. The <em>grouping |
+ * size</em> is the number of digits between the grouping separators, such as 3 |
+ * for "100,000,000" or 4 for "1 0000 0000". There are actually two different |
+ * grouping sizes: One used for the least significant integer digits, the |
+ * <em>primary grouping size</em>, and one used for all others, the |
+ * <em>secondary grouping size</em>. In most locales these are the same, but |
+ * sometimes they are different. For example, if the primary grouping interval |
+ * is 3, and the secondary is 2, then this corresponds to the pattern |
+ * "#,##,##0", and the number 123456789 is formatted as "12,34,56,789". If a |
+ * pattern contains multiple grouping separators, the interval between the last |
+ * one and the end of the integer defines the primary grouping size, and the |
+ * interval between the last two defines the secondary grouping size. All others |
+ * are ignored, so "#,##,###,####" == "###,###,####" == "##,#,###,####". |
+ * |
+ * <p>Illegal patterns, such as "#.#.#" or "#.###,###", will cause |
+ * DecimalFormat to set a failing UErrorCode. |
+ * |
+ * <p><strong>Pattern BNF</strong> |
+ * |
+ * <pre> |
+ * pattern := subpattern (';' subpattern)? |
+ * subpattern := prefix? number exponent? suffix? |
+ * number := (integer ('.' fraction)?) | sigDigits |
+ * prefix := '\\u0000'..'\\uFFFD' - specialCharacters |
+ * suffix := '\\u0000'..'\\uFFFD' - specialCharacters |
+ * integer := '#'* '0'* '0' |
+ * fraction := '0'* '#'* |
+ * sigDigits := '#'* '@' '@'* '#'* |
+ * exponent := 'E' '+'? '0'* '0' |
+ * padSpec := '*' padChar |
+ * padChar := '\\u0000'..'\\uFFFD' - quote |
+ * |
+ * Notation: |
+ * X* 0 or more instances of X |
+ * X? 0 or 1 instances of X |
+ * X|Y either X or Y |
+ * C..D any character from C up to D, inclusive |
+ * S-T characters in S, except those in T |
+ * </pre> |
+ * The first subpattern is for positive numbers. The second (optional) |
+ * subpattern is for negative numbers. |
+ * |
+ * <p>Not indicated in the BNF syntax above: |
+ * |
+ * <ul><li>The grouping separator ',' can occur inside the integer and |
+ * sigDigits elements, between any two pattern characters of that |
+ * element, as long as the integer or sigDigits element is not |
+ * followed by the exponent element. |
+ * |
+ * <li>Two grouping intervals are recognized: That between the |
+ * decimal point and the first grouping symbol, and that |
+ * between the first and second grouping symbols. These |
+ * intervals are identical in most locales, but in some |
+ * locales they differ. For example, the pattern |
+ * "#,##,###" formats the number 123456789 as |
+ * "12,34,56,789".</li> |
+ * |
+ * <li>The pad specifier <code>padSpec</code> may appear before the prefix, |
+ * after the prefix, before the suffix, after the suffix, or not at all. |
+ * |
+ * <li>In place of '0', the digits '1' through '9' may be used to |
+ * indicate a rounding increment. |
+ * </ul> |
+ * |
+ * <p><strong>Parsing</strong> |
+ * |
+ * <p>DecimalFormat parses all Unicode characters that represent |
+ * decimal digits, as defined by u_charDigitValue(). In addition, |
+ * DecimalFormat also recognizes as digits the ten consecutive |
+ * characters starting with the localized zero digit defined in the |
+ * DecimalFormatSymbols object. During formatting, the |
+ * DecimalFormatSymbols-based digits are output. |
+ * |
+ * <p>During parsing, grouping separators are ignored. |
+ * |
+ * <p>For currency parsing, the formatter is able to parse every currency |
+ * style formats no matter which style the formatter is constructed with. |
+ * For example, a formatter instance gotten from |
+ * NumberFormat.getInstance(ULocale, NumberFormat.CURRENCYSTYLE) can parse |
+ * formats such as "USD1.00" and "3.00 US dollars". |
+ * |
+ * <p>If parse(UnicodeString&,Formattable&,ParsePosition&) |
+ * fails to parse a string, it leaves the parse position unchanged. |
+ * The convenience method parse(UnicodeString&,Formattable&,UErrorCode&) |
+ * indicates parse failure by setting a failing |
+ * UErrorCode. |
+ * |
+ * <p><strong>Formatting</strong> |
+ * |
+ * <p>Formatting is guided by several parameters, all of which can be |
+ * specified either using a pattern or using the API. The following |
+ * description applies to formats that do not use <a href="#sci">scientific |
+ * notation</a> or <a href="#sigdig">significant digits</a>. |
+ * |
+ * <ul><li>If the number of actual integer digits exceeds the |
+ * <em>maximum integer digits</em>, then only the least significant |
+ * digits are shown. For example, 1997 is formatted as "97" if the |
+ * maximum integer digits is set to 2. |
+ * |
+ * <li>If the number of actual integer digits is less than the |
+ * <em>minimum integer digits</em>, then leading zeros are added. For |
+ * example, 1997 is formatted as "01997" if the minimum integer digits |
+ * is set to 5. |
+ * |
+ * <li>If the number of actual fraction digits exceeds the <em>maximum |
+ * fraction digits</em>, then rounding is performed to the |
+ * maximum fraction digits. For example, 0.125 is formatted as "0.12" |
+ * if the maximum fraction digits is 2. This behavior can be changed |
+ * by specifying a rounding increment and/or a rounding mode. |
+ * |
+ * <li>If the number of actual fraction digits is less than the |
+ * <em>minimum fraction digits</em>, then trailing zeros are added. |
+ * For example, 0.125 is formatted as "0.1250" if the mimimum fraction |
+ * digits is set to 4. |
+ * |
+ * <li>Trailing fractional zeros are not displayed if they occur |
+ * <em>j</em> positions after the decimal, where <em>j</em> is less |
+ * than the maximum fraction digits. For example, 0.10004 is |
+ * formatted as "0.1" if the maximum fraction digits is four or less. |
+ * </ul> |
+ * |
+ * <p><strong>Special Values</strong> |
+ * |
+ * <p><code>NaN</code> is represented as a single character, typically |
+ * <code>\\uFFFD</code>. This character is determined by the |
+ * DecimalFormatSymbols object. This is the only value for which |
+ * the prefixes and suffixes are not used. |
+ * |
+ * <p>Infinity is represented as a single character, typically |
+ * <code>\\u221E</code>, with the positive or negative prefixes and suffixes |
+ * applied. The infinity character is determined by the |
+ * DecimalFormatSymbols object. |
+ * |
+ * <a name="sci"><strong>Scientific Notation</strong></a> |
+ * |
+ * <p>Numbers in scientific notation are expressed as the product of a mantissa |
+ * and a power of ten, for example, 1234 can be expressed as 1.234 x 10<sup>3</sup>. The |
+ * mantissa is typically in the half-open interval [1.0, 10.0) or sometimes [0.0, 1.0), |
+ * but it need not be. DecimalFormat supports arbitrary mantissas. |
+ * DecimalFormat can be instructed to use scientific |
+ * notation through the API or through the pattern. In a pattern, the exponent |
+ * character immediately followed by one or more digit characters indicates |
+ * scientific notation. Example: "0.###E0" formats the number 1234 as |
+ * "1.234E3". |
+ * |
+ * <ul> |
+ * <li>The number of digit characters after the exponent character gives the |
+ * minimum exponent digit count. There is no maximum. Negative exponents are |
+ * formatted using the localized minus sign, <em>not</em> the prefix and suffix |
+ * from the pattern. This allows patterns such as "0.###E0 m/s". To prefix |
+ * positive exponents with a localized plus sign, specify '+' between the |
+ * exponent and the digits: "0.###E+0" will produce formats "1E+1", "1E+0", |
+ * "1E-1", etc. (In localized patterns, use the localized plus sign rather than |
+ * '+'.) |
+ * |
+ * <li>The minimum number of integer digits is achieved by adjusting the |
+ * exponent. Example: 0.00123 formatted with "00.###E0" yields "12.3E-4". This |
+ * only happens if there is no maximum number of integer digits. If there is a |
+ * maximum, then the minimum number of integer digits is fixed at one. |
+ * |
+ * <li>The maximum number of integer digits, if present, specifies the exponent |
+ * grouping. The most common use of this is to generate <em>engineering |
+ * notation</em>, in which the exponent is a multiple of three, e.g., |
+ * "##0.###E0". The number 12345 is formatted using "##0.####E0" as "12.345E3". |
+ * |
+ * <li>When using scientific notation, the formatter controls the |
+ * digit counts using significant digits logic. The maximum number of |
+ * significant digits limits the total number of integer and fraction |
+ * digits that will be shown in the mantissa; it does not affect |
+ * parsing. For example, 12345 formatted with "##0.##E0" is "12.3E3". |
+ * See the section on significant digits for more details. |
+ * |
+ * <li>The number of significant digits shown is determined as |
+ * follows: If areSignificantDigitsUsed() returns false, then the |
+ * minimum number of significant digits shown is one, and the maximum |
+ * number of significant digits shown is the sum of the <em>minimum |
+ * integer</em> and <em>maximum fraction</em> digits, and is |
+ * unaffected by the maximum integer digits. If this sum is zero, |
+ * then all significant digits are shown. If |
+ * areSignificantDigitsUsed() returns true, then the significant digit |
+ * counts are specified by getMinimumSignificantDigits() and |
+ * getMaximumSignificantDigits(). In this case, the number of |
+ * integer digits is fixed at one, and there is no exponent grouping. |
+ * |
+ * <li>Exponential patterns may not contain grouping separators. |
+ * </ul> |
+ * |
+ * <a name="sigdig"><strong>Significant Digits</strong></a> |
+ * |
+ * <code>DecimalFormat</code> has two ways of controlling how many |
+ * digits are shows: (a) significant digits counts, or (b) integer and |
+ * fraction digit counts. Integer and fraction digit counts are |
+ * described above. When a formatter is using significant digits |
+ * counts, the number of integer and fraction digits is not specified |
+ * directly, and the formatter settings for these counts are ignored. |
+ * Instead, the formatter uses however many integer and fraction |
+ * digits are required to display the specified number of significant |
+ * digits. Examples: |
+ * |
+ * <table border=0 cellspacing=3 cellpadding=0> |
+ * <tr bgcolor="#ccccff"> |
+ * <td align=left>Pattern |
+ * <td align=left>Minimum significant digits |
+ * <td align=left>Maximum significant digits |
+ * <td align=left>Number |
+ * <td align=left>Output of format() |
+ * <tr valign=top> |
+ * <td><code>\@\@\@</code> |
+ * <td>3 |
+ * <td>3 |
+ * <td>12345 |
+ * <td><code>12300</code> |
+ * <tr valign=top bgcolor="#eeeeff"> |
+ * <td><code>\@\@\@</code> |
+ * <td>3 |
+ * <td>3 |
+ * <td>0.12345 |
+ * <td><code>0.123</code> |
+ * <tr valign=top> |
+ * <td><code>\@\@##</code> |
+ * <td>2 |
+ * <td>4 |
+ * <td>3.14159 |
+ * <td><code>3.142</code> |
+ * <tr valign=top bgcolor="#eeeeff"> |
+ * <td><code>\@\@##</code> |
+ * <td>2 |
+ * <td>4 |
+ * <td>1.23004 |
+ * <td><code>1.23</code> |
+ * </table> |
+ * |
+ * <ul> |
+ * <li>Significant digit counts may be expressed using patterns that |
+ * specify a minimum and maximum number of significant digits. These |
+ * are indicated by the <code>'@'</code> and <code>'#'</code> |
+ * characters. The minimum number of significant digits is the number |
+ * of <code>'@'</code> characters. The maximum number of significant |
+ * digits is the number of <code>'@'</code> characters plus the number |
+ * of <code>'#'</code> characters following on the right. For |
+ * example, the pattern <code>"@@@"</code> indicates exactly 3 |
+ * significant digits. The pattern <code>"@##"</code> indicates from |
+ * 1 to 3 significant digits. Trailing zero digits to the right of |
+ * the decimal separator are suppressed after the minimum number of |
+ * significant digits have been shown. For example, the pattern |
+ * <code>"@##"</code> formats the number 0.1203 as |
+ * <code>"0.12"</code>. |
+ * |
+ * <li>If a pattern uses significant digits, it may not contain a |
+ * decimal separator, nor the <code>'0'</code> pattern character. |
+ * Patterns such as <code>"@00"</code> or <code>"@.###"</code> are |
+ * disallowed. |
+ * |
+ * <li>Any number of <code>'#'</code> characters may be prepended to |
+ * the left of the leftmost <code>'@'</code> character. These have no |
+ * effect on the minimum and maximum significant digits counts, but |
+ * may be used to position grouping separators. For example, |
+ * <code>"#,#@#"</code> indicates a minimum of one significant digits, |
+ * a maximum of two significant digits, and a grouping size of three. |
+ * |
+ * <li>In order to enable significant digits formatting, use a pattern |
+ * containing the <code>'@'</code> pattern character. Alternatively, |
+ * call setSignificantDigitsUsed(TRUE). |
+ * |
+ * <li>In order to disable significant digits formatting, use a |
+ * pattern that does not contain the <code>'@'</code> pattern |
+ * character. Alternatively, call setSignificantDigitsUsed(FALSE). |
+ * |
+ * <li>The number of significant digits has no effect on parsing. |
+ * |
+ * <li>Significant digits may be used together with exponential notation. Such |
+ * patterns are equivalent to a normal exponential pattern with a minimum and |
+ * maximum integer digit count of one, a minimum fraction digit count of |
+ * <code>getMinimumSignificantDigits() - 1</code>, and a maximum fraction digit |
+ * count of <code>getMaximumSignificantDigits() - 1</code>. For example, the |
+ * pattern <code>"@@###E0"</code> is equivalent to <code>"0.0###E0"</code>. |
+ * |
+ * <li>If signficant digits are in use, then the integer and fraction |
+ * digit counts, as set via the API, are ignored. If significant |
+ * digits are not in use, then the signficant digit counts, as set via |
+ * the API, are ignored. |
+ * |
+ * </ul> |
+ * |
+ * <p><strong>Padding</strong> |
+ * |
+ * <p>DecimalFormat supports padding the result of |
+ * format() to a specific width. Padding may be specified either |
+ * through the API or through the pattern syntax. In a pattern the pad escape |
+ * character, followed by a single pad character, causes padding to be parsed |
+ * and formatted. The pad escape character is '*' in unlocalized patterns, and |
+ * can be localized using DecimalFormatSymbols::setSymbol() with a |
+ * DecimalFormatSymbols::kPadEscapeSymbol |
+ * selector. For example, <code>"$*x#,##0.00"</code> formats 123 to |
+ * <code>"$xx123.00"</code>, and 1234 to <code>"$1,234.00"</code>. |
+ * |
+ * <ul> |
+ * <li>When padding is in effect, the width of the positive subpattern, |
+ * including prefix and suffix, determines the format width. For example, in |
+ * the pattern <code>"* #0 o''clock"</code>, the format width is 10. |
+ * |
+ * <li>The width is counted in 16-bit code units (UChars). |
+ * |
+ * <li>Some parameters which usually do not matter have meaning when padding is |
+ * used, because the pattern width is significant with padding. In the pattern |
+ * "* ##,##,#,##0.##", the format width is 14. The initial characters "##,##," |
+ * do not affect the grouping size or maximum integer digits, but they do affect |
+ * the format width. |
+ * |
+ * <li>Padding may be inserted at one of four locations: before the prefix, |
+ * after the prefix, before the suffix, or after the suffix. If padding is |
+ * specified in any other location, applyPattern() |
+ * sets a failing UErrorCode. If there is no prefix, |
+ * before the prefix and after the prefix are equivalent, likewise for the |
+ * suffix. |
+ * |
+ * <li>When specified in a pattern, the 32-bit code point immediately |
+ * following the pad escape is the pad character. This may be any character, |
+ * including a special pattern character. That is, the pad escape |
+ * <em>escapes</em> the following character. If there is no character after |
+ * the pad escape, then the pattern is illegal. |
+ * |
+ * </ul> |
+ * |
+ * <p><strong>Rounding</strong> |
+ * |
+ * <p>DecimalFormat supports rounding to a specific increment. For |
+ * example, 1230 rounded to the nearest 50 is 1250. 1.234 rounded to the |
+ * nearest 0.65 is 1.3. The rounding increment may be specified through the API |
+ * or in a pattern. To specify a rounding increment in a pattern, include the |
+ * increment in the pattern itself. "#,#50" specifies a rounding increment of |
+ * 50. "#,##0.05" specifies a rounding increment of 0.05. |
+ * |
+ * <p>In the absense of an explicit rounding increment numbers are |
+ * rounded to their formatted width. |
+ * |
+ * <ul> |
+ * <li>Rounding only affects the string produced by formatting. It does |
+ * not affect parsing or change any numerical values. |
+ * |
+ * <li>A <em>rounding mode</em> determines how values are rounded; see |
+ * DecimalFormat::ERoundingMode. The default rounding mode is |
+ * DecimalFormat::kRoundHalfEven. The rounding mode can only be set |
+ * through the API; it can not be set with a pattern. |
+ * |
+ * <li>Some locales use rounding in their currency formats to reflect the |
+ * smallest currency denomination. |
+ * |
+ * <li>In a pattern, digits '1' through '9' specify rounding, but otherwise |
+ * behave identically to digit '0'. |
+ * </ul> |
+ * |
+ * <p><strong>Synchronization</strong> |
+ * |
+ * <p>DecimalFormat objects are not synchronized. Multiple |
+ * threads should not access one formatter concurrently. |
+ * |
+ * <p><strong>Subclassing</strong> |
+ * |
+ * <p><em>User subclasses are not supported.</em> While clients may write |
+ * subclasses, such code will not necessarily work and will not be |
+ * guaranteed to work stably from release to release. |
+ */ |
+class U_I18N_API DecimalFormat: public NumberFormat { |
+public: |
+ /** |
+ * Rounding mode. |
+ * @stable ICU 2.4 |
+ */ |
+ enum ERoundingMode { |
+ kRoundCeiling, /**< Round towards positive infinity */ |
+ kRoundFloor, /**< Round towards negative infinity */ |
+ kRoundDown, /**< Round towards zero */ |
+ kRoundUp, /**< Round away from zero */ |
+ kRoundHalfEven, /**< Round towards the nearest integer, or |
+ towards the nearest even integer if equidistant */ |
+ kRoundHalfDown, /**< Round towards the nearest integer, or |
+ towards zero if equidistant */ |
+ kRoundHalfUp /**< Round towards the nearest integer, or |
+ away from zero if equidistant */ |
+ // We don't support ROUND_UNNECESSARY |
+ }; |
+ |
+ /** |
+ * Pad position. |
+ * @stable ICU 2.4 |
+ */ |
+ enum EPadPosition { |
+ kPadBeforePrefix, |
+ kPadAfterPrefix, |
+ kPadBeforeSuffix, |
+ kPadAfterSuffix |
+ }; |
+ |
+ /** |
+ * Create a DecimalFormat using the default pattern and symbols |
+ * for the default locale. This is a convenient way to obtain a |
+ * DecimalFormat when internationalization is not the main concern. |
+ * <P> |
+ * To obtain standard formats for a given locale, use the factory methods |
+ * on NumberFormat such as createInstance. These factories will |
+ * return the most appropriate sub-class of NumberFormat for a given |
+ * locale. |
+ * @param status Output param set to success/failure code. If the |
+ * pattern is invalid this will be set to a failure code. |
+ * @stable ICU 2.0 |
+ */ |
+ DecimalFormat(UErrorCode& status); |
+ |
+ /** |
+ * Create a DecimalFormat from the given pattern and the symbols |
+ * for the default locale. This is a convenient way to obtain a |
+ * DecimalFormat when internationalization is not the main concern. |
+ * <P> |
+ * To obtain standard formats for a given locale, use the factory methods |
+ * on NumberFormat such as createInstance. These factories will |
+ * return the most appropriate sub-class of NumberFormat for a given |
+ * locale. |
+ * @param pattern A non-localized pattern string. |
+ * @param status Output param set to success/failure code. If the |
+ * pattern is invalid this will be set to a failure code. |
+ * @stable ICU 2.0 |
+ */ |
+ DecimalFormat(const UnicodeString& pattern, |
+ UErrorCode& status); |
+ |
+ /** |
+ * Create a DecimalFormat from the given pattern and symbols. |
+ * Use this constructor when you need to completely customize the |
+ * behavior of the format. |
+ * <P> |
+ * To obtain standard formats for a given |
+ * locale, use the factory methods on NumberFormat such as |
+ * createInstance or createCurrencyInstance. If you need only minor adjustments |
+ * to a standard format, you can modify the format returned by |
+ * a NumberFormat factory method. |
+ * |
+ * @param pattern a non-localized pattern string |
+ * @param symbolsToAdopt the set of symbols to be used. The caller should not |
+ * delete this object after making this call. |
+ * @param status Output param set to success/failure code. If the |
+ * pattern is invalid this will be set to a failure code. |
+ * @stable ICU 2.0 |
+ */ |
+ DecimalFormat( const UnicodeString& pattern, |
+ DecimalFormatSymbols* symbolsToAdopt, |
+ UErrorCode& status); |
+ |
+ /** |
+ * This API is for ICU use only. |
+ * Create a DecimalFormat from the given pattern, symbols, and style. |
+ * |
+ * @param pattern a non-localized pattern string |
+ * @param symbolsToAdopt the set of symbols to be used. The caller should not |
+ * delete this object after making this call. |
+ * @param style style of decimal format, kNumberStyle etc. |
+ * @param status Output param set to success/failure code. If the |
+ * pattern is invalid this will be set to a failure code. |
+ * @internal ICU 4.2 |
+ */ |
+ DecimalFormat( const UnicodeString& pattern, |
+ DecimalFormatSymbols* symbolsToAdopt, |
+ NumberFormat::EStyles style, |
+ UErrorCode& status); |
+ |
+ /** |
+ * Create a DecimalFormat from the given pattern and symbols. |
+ * Use this constructor when you need to completely customize the |
+ * behavior of the format. |
+ * <P> |
+ * To obtain standard formats for a given |
+ * locale, use the factory methods on NumberFormat such as |
+ * createInstance or createCurrencyInstance. If you need only minor adjustments |
+ * to a standard format, you can modify the format returned by |
+ * a NumberFormat factory method. |
+ * |
+ * @param pattern a non-localized pattern string |
+ * @param symbolsToAdopt the set of symbols to be used. The caller should not |
+ * delete this object after making this call. |
+ * @param parseError Output param to receive errors occured during parsing |
+ * @param status Output param set to success/failure code. If the |
+ * pattern is invalid this will be set to a failure code. |
+ * @stable ICU 2.0 |
+ */ |
+ DecimalFormat( const UnicodeString& pattern, |
+ DecimalFormatSymbols* symbolsToAdopt, |
+ UParseError& parseError, |
+ UErrorCode& status); |
+ /** |
+ * Create a DecimalFormat from the given pattern and symbols. |
+ * Use this constructor when you need to completely customize the |
+ * behavior of the format. |
+ * <P> |
+ * To obtain standard formats for a given |
+ * locale, use the factory methods on NumberFormat such as |
+ * createInstance or createCurrencyInstance. If you need only minor adjustments |
+ * to a standard format, you can modify the format returned by |
+ * a NumberFormat factory method. |
+ * |
+ * @param pattern a non-localized pattern string |
+ * @param symbols the set of symbols to be used |
+ * @param status Output param set to success/failure code. If the |
+ * pattern is invalid this will be set to a failure code. |
+ * @stable ICU 2.0 |
+ */ |
+ DecimalFormat( const UnicodeString& pattern, |
+ const DecimalFormatSymbols& symbols, |
+ UErrorCode& status); |
+ |
+ /** |
+ * Copy constructor. |
+ * |
+ * @param source the DecimalFormat object to be copied from. |
+ * @stable ICU 2.0 |
+ */ |
+ DecimalFormat(const DecimalFormat& source); |
+ |
+ /** |
+ * Assignment operator. |
+ * |
+ * @param rhs the DecimalFormat object to be copied. |
+ * @stable ICU 2.0 |
+ */ |
+ DecimalFormat& operator=(const DecimalFormat& rhs); |
+ |
+ /** |
+ * Destructor. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual ~DecimalFormat(); |
+ |
+ /** |
+ * Clone this Format object polymorphically. The caller owns the |
+ * result and should delete it when done. |
+ * |
+ * @return a polymorphic copy of this DecimalFormat. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual Format* clone(void) const; |
+ |
+ /** |
+ * Return true if the given Format objects are semantically equal. |
+ * Objects of different subclasses are considered unequal. |
+ * |
+ * @param other the object to be compared with. |
+ * @return true if the given Format objects are semantically equal. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UBool operator==(const Format& other) const; |
+ |
+ |
+ using NumberFormat::format; |
+ |
+ /** |
+ * Format a double or long number using base-10 representation. |
+ * |
+ * @param number The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param pos On input: an alignment field, if desired. |
+ * On output: the offsets of the alignment field. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UnicodeString& format(double number, |
+ UnicodeString& appendTo, |
+ FieldPosition& pos) const; |
+ |
+ /** |
+ * Format a double or long number using base-10 representation. |
+ * |
+ * @param number The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param posIter On return, can be used to iterate over positions |
+ * of fields generated by this format call. |
+ * Can be NULL. |
+ * @param status Output param filled with success/failure status. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable 4.4 |
+ */ |
+ virtual UnicodeString& format(double number, |
+ UnicodeString& appendTo, |
+ FieldPositionIterator* posIter, |
+ UErrorCode& status) const; |
+ |
+ /** |
+ * Format a long number using base-10 representation. |
+ * |
+ * @param number The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param pos On input: an alignment field, if desired. |
+ * On output: the offsets of the alignment field. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UnicodeString& format(int32_t number, |
+ UnicodeString& appendTo, |
+ FieldPosition& pos) const; |
+ |
+ /** |
+ * Format a long number using base-10 representation. |
+ * |
+ * @param number The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param posIter On return, can be used to iterate over positions |
+ * of fields generated by this format call. |
+ * Can be NULL. |
+ * @param status Output param filled with success/failure status. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable 4.4 |
+ */ |
+ virtual UnicodeString& format(int32_t number, |
+ UnicodeString& appendTo, |
+ FieldPositionIterator* posIter, |
+ UErrorCode& status) const; |
+ |
+ /** |
+ * Format an int64 number using base-10 representation. |
+ * |
+ * @param number The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param pos On input: an alignment field, if desired. |
+ * On output: the offsets of the alignment field. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable ICU 2.8 |
+ */ |
+ virtual UnicodeString& format(int64_t number, |
+ UnicodeString& appendTo, |
+ FieldPosition& pos) const; |
+ |
+ /** |
+ * Format an int64 number using base-10 representation. |
+ * |
+ * @param number The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param posIter On return, can be used to iterate over positions |
+ * of fields generated by this format call. |
+ * Can be NULL. |
+ * @param status Output param filled with success/failure status. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable 4.4 |
+ */ |
+ virtual UnicodeString& format(int64_t number, |
+ UnicodeString& appendTo, |
+ FieldPositionIterator* posIter, |
+ UErrorCode& status) const; |
+ |
+ /** |
+ * Format a decimal number. |
+ * The syntax of the unformatted number is a "numeric string" |
+ * as defined in the Decimal Arithmetic Specification, available at |
+ * http://speleotrove.com/decimal |
+ * |
+ * @param number The unformatted number, as a string. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param posIter On return, can be used to iterate over positions |
+ * of fields generated by this format call. |
+ * Can be NULL. |
+ * @param status Output param filled with success/failure status. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable 4.4 |
+ */ |
+ virtual UnicodeString& format(const StringPiece &number, |
+ UnicodeString& appendTo, |
+ FieldPositionIterator* posIter, |
+ UErrorCode& status) const; |
+ |
+ |
+ /** |
+ * Format a decimal number. |
+ * The number is a DigitList wrapper onto a floating point decimal number. |
+ * The default implementation in NumberFormat converts the decimal number |
+ * to a double and formats that. |
+ * |
+ * @param number The number, a DigitList format Decimal Floating Point. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param posIter On return, can be used to iterate over positions |
+ * of fields generated by this format call. |
+ * @param status Output param filled with success/failure status. |
+ * @return Reference to 'appendTo' parameter. |
+ * @internal |
+ */ |
+ virtual UnicodeString& format(const DigitList &number, |
+ UnicodeString& appendTo, |
+ FieldPositionIterator* posIter, |
+ UErrorCode& status) const; |
+ |
+ /** |
+ * Format a decimal number. |
+ * The number is a DigitList wrapper onto a floating point decimal number. |
+ * The default implementation in NumberFormat converts the decimal number |
+ * to a double and formats that. |
+ * |
+ * @param number The number, a DigitList format Decimal Floating Point. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param pos On input: an alignment field, if desired. |
+ * On output: the offsets of the alignment field. |
+ * @param status Output param filled with success/failure status. |
+ * @return Reference to 'appendTo' parameter. |
+ * @internal |
+ */ |
+ virtual UnicodeString& format(const DigitList &number, |
+ UnicodeString& appendTo, |
+ FieldPosition& pos, |
+ UErrorCode& status) const; |
+ |
+ |
+ /** |
+ * Format a Formattable using base-10 representation. |
+ * |
+ * @param obj The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param pos On input: an alignment field, if desired. |
+ * On output: the offsets of the alignment field. |
+ * @param status Error code indicating success or failure. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UnicodeString& format(const Formattable& obj, |
+ UnicodeString& appendTo, |
+ FieldPosition& pos, |
+ UErrorCode& status) const; |
+ |
+ /** |
+ * Redeclared NumberFormat method. |
+ * Formats an object to produce a string. |
+ * |
+ * @param obj The object to format. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param status Output parameter filled in with success or failure status. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable ICU 2.0 |
+ */ |
+ UnicodeString& format(const Formattable& obj, |
+ UnicodeString& appendTo, |
+ UErrorCode& status) const; |
+ |
+ /** |
+ * Redeclared NumberFormat method. |
+ * Format a double number. |
+ * |
+ * @param number The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable ICU 2.0 |
+ */ |
+ UnicodeString& format(double number, |
+ UnicodeString& appendTo) const; |
+ |
+ /** |
+ * Redeclared NumberFormat method. |
+ * Format a long number. These methods call the NumberFormat |
+ * pure virtual format() methods with the default FieldPosition. |
+ * |
+ * @param number The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable ICU 2.0 |
+ */ |
+ UnicodeString& format(int32_t number, |
+ UnicodeString& appendTo) const; |
+ |
+ /** |
+ * Redeclared NumberFormat method. |
+ * Format an int64 number. These methods call the NumberFormat |
+ * pure virtual format() methods with the default FieldPosition. |
+ * |
+ * @param number The value to be formatted. |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @return Reference to 'appendTo' parameter. |
+ * @stable ICU 2.8 |
+ */ |
+ UnicodeString& format(int64_t number, |
+ UnicodeString& appendTo) const; |
+ /** |
+ * Parse the given string using this object's choices. The method |
+ * does string comparisons to try to find an optimal match. |
+ * If no object can be parsed, index is unchanged, and NULL is |
+ * returned. The result is returned as the most parsimonious |
+ * type of Formattable that will accomodate all of the |
+ * necessary precision. For example, if the result is exactly 12, |
+ * it will be returned as a long. However, if it is 1.5, it will |
+ * be returned as a double. |
+ * |
+ * @param text The text to be parsed. |
+ * @param result Formattable to be set to the parse result. |
+ * If parse fails, return contents are undefined. |
+ * @param parsePosition The position to start parsing at on input. |
+ * On output, moved to after the last successfully |
+ * parse character. On parse failure, does not change. |
+ * @see Formattable |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void parse(const UnicodeString& text, |
+ Formattable& result, |
+ ParsePosition& parsePosition) const; |
+ |
+ // Declare here again to get rid of function hiding problems. |
+ /** |
+ * Parse the given string using this object's choices. |
+ * |
+ * @param text The text to be parsed. |
+ * @param result Formattable to be set to the parse result. |
+ * @param status Output parameter filled in with success or failure status. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void parse(const UnicodeString& text, |
+ Formattable& result, |
+ UErrorCode& status) const; |
+ |
+ /** |
+ * Parses text from the given string as a currency amount. Unlike |
+ * the parse() method, this method will attempt to parse a generic |
+ * currency name, searching for a match of this object's locale's |
+ * currency display names, or for a 3-letter ISO currency code. |
+ * This method will fail if this format is not a currency format, |
+ * that is, if it does not contain the currency pattern symbol |
+ * (U+00A4) in its prefix or suffix. |
+ * |
+ * @param text the string to parse |
+ * @param result output parameter to receive result. This will have |
+ * its currency set to the parsed ISO currency code. |
+ * @param pos input-output position; on input, the position within |
+ * text to match; must have 0 <= pos.getIndex() < text.length(); |
+ * on output, the position after the last matched character. If |
+ * the parse fails, the position in unchanged upon output. |
+ * @return a reference to result |
+ * @internal |
+ */ |
+ virtual Formattable& parseCurrency(const UnicodeString& text, |
+ Formattable& result, |
+ ParsePosition& pos) const; |
+ |
+ /** |
+ * Returns the decimal format symbols, which is generally not changed |
+ * by the programmer or user. |
+ * @return desired DecimalFormatSymbols |
+ * @see DecimalFormatSymbols |
+ * @stable ICU 2.0 |
+ */ |
+ virtual const DecimalFormatSymbols* getDecimalFormatSymbols(void) const; |
+ |
+ /** |
+ * Sets the decimal format symbols, which is generally not changed |
+ * by the programmer or user. |
+ * @param symbolsToAdopt DecimalFormatSymbols to be adopted. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void adoptDecimalFormatSymbols(DecimalFormatSymbols* symbolsToAdopt); |
+ |
+ /** |
+ * Sets the decimal format symbols, which is generally not changed |
+ * by the programmer or user. |
+ * @param symbols DecimalFormatSymbols. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setDecimalFormatSymbols(const DecimalFormatSymbols& symbols); |
+ |
+ |
+ /** |
+ * Returns the currency plural format information, |
+ * which is generally not changed by the programmer or user. |
+ * @return desired CurrencyPluralInfo |
+ * @stable ICU 4.2 |
+ */ |
+ virtual const CurrencyPluralInfo* getCurrencyPluralInfo(void) const; |
+ |
+ /** |
+ * Sets the currency plural format information, |
+ * which is generally not changed by the programmer or user. |
+ * @param toAdopt CurrencyPluralInfo to be adopted. |
+ * @stable ICU 4.2 |
+ */ |
+ virtual void adoptCurrencyPluralInfo(CurrencyPluralInfo* toAdopt); |
+ |
+ /** |
+ * Sets the currency plural format information, |
+ * which is generally not changed by the programmer or user. |
+ * @param info Currency Plural Info. |
+ * @stable ICU 4.2 |
+ */ |
+ virtual void setCurrencyPluralInfo(const CurrencyPluralInfo& info); |
+ |
+ |
+ /** |
+ * Get the positive prefix. |
+ * |
+ * @param result Output param which will receive the positive prefix. |
+ * @return A reference to 'result'. |
+ * Examples: +123, $123, sFr123 |
+ * @stable ICU 2.0 |
+ */ |
+ UnicodeString& getPositivePrefix(UnicodeString& result) const; |
+ |
+ /** |
+ * Set the positive prefix. |
+ * |
+ * @param newValue the new value of the the positive prefix to be set. |
+ * Examples: +123, $123, sFr123 |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setPositivePrefix(const UnicodeString& newValue); |
+ |
+ /** |
+ * Get the negative prefix. |
+ * |
+ * @param result Output param which will receive the negative prefix. |
+ * @return A reference to 'result'. |
+ * Examples: -123, ($123) (with negative suffix), sFr-123 |
+ * @stable ICU 2.0 |
+ */ |
+ UnicodeString& getNegativePrefix(UnicodeString& result) const; |
+ |
+ /** |
+ * Set the negative prefix. |
+ * |
+ * @param newValue the new value of the the negative prefix to be set. |
+ * Examples: -123, ($123) (with negative suffix), sFr-123 |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setNegativePrefix(const UnicodeString& newValue); |
+ |
+ /** |
+ * Get the positive suffix. |
+ * |
+ * @param result Output param which will receive the positive suffix. |
+ * @return A reference to 'result'. |
+ * Example: 123% |
+ * @stable ICU 2.0 |
+ */ |
+ UnicodeString& getPositiveSuffix(UnicodeString& result) const; |
+ |
+ /** |
+ * Set the positive suffix. |
+ * |
+ * @param newValue the new value of the positive suffix to be set. |
+ * Example: 123% |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setPositiveSuffix(const UnicodeString& newValue); |
+ |
+ /** |
+ * Get the negative suffix. |
+ * |
+ * @param result Output param which will receive the negative suffix. |
+ * @return A reference to 'result'. |
+ * Examples: -123%, ($123) (with positive suffixes) |
+ * @stable ICU 2.0 |
+ */ |
+ UnicodeString& getNegativeSuffix(UnicodeString& result) const; |
+ |
+ /** |
+ * Set the negative suffix. |
+ * |
+ * @param newValue the new value of the negative suffix to be set. |
+ * Examples: 123% |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setNegativeSuffix(const UnicodeString& newValue); |
+ |
+ /** |
+ * Get the multiplier for use in percent, permill, etc. |
+ * For a percentage, set the suffixes to have "%" and the multiplier to be 100. |
+ * (For Arabic, use arabic percent symbol). |
+ * For a permill, set the suffixes to have "\\u2031" and the multiplier to be 1000. |
+ * |
+ * @return the multiplier for use in percent, permill, etc. |
+ * Examples: with 100, 1.23 -> "123", and "123" -> 1.23 |
+ * @stable ICU 2.0 |
+ */ |
+ int32_t getMultiplier(void) const; |
+ |
+ /** |
+ * Set the multiplier for use in percent, permill, etc. |
+ * For a percentage, set the suffixes to have "%" and the multiplier to be 100. |
+ * (For Arabic, use arabic percent symbol). |
+ * For a permill, set the suffixes to have "\\u2031" and the multiplier to be 1000. |
+ * |
+ * @param newValue the new value of the multiplier for use in percent, permill, etc. |
+ * Examples: with 100, 1.23 -> "123", and "123" -> 1.23 |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setMultiplier(int32_t newValue); |
+ |
+ /** |
+ * Get the rounding increment. |
+ * @return A positive rounding increment, or 0.0 if a rounding |
+ * increment is not in effect. |
+ * @see #setRoundingIncrement |
+ * @see #getRoundingMode |
+ * @see #setRoundingMode |
+ * @stable ICU 2.0 |
+ */ |
+ virtual double getRoundingIncrement(void) const; |
+ |
+ /** |
+ * Set the rounding increment. In the absence of a rounding increment, |
+ * numbers will be rounded to the number of digits displayed. |
+ * @param newValue A positive rounding increment. |
+ * Negative increments are equivalent to 0.0. |
+ * @see #getRoundingIncrement |
+ * @see #getRoundingMode |
+ * @see #setRoundingMode |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setRoundingIncrement(double newValue); |
+ |
+ /** |
+ * Get the rounding mode. |
+ * @return A rounding mode |
+ * @see #setRoundingIncrement |
+ * @see #getRoundingIncrement |
+ * @see #setRoundingMode |
+ * @stable ICU 2.0 |
+ */ |
+ virtual ERoundingMode getRoundingMode(void) const; |
+ |
+ /** |
+ * Set the rounding mode. |
+ * @param roundingMode A rounding mode |
+ * @see #setRoundingIncrement |
+ * @see #getRoundingIncrement |
+ * @see #getRoundingMode |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setRoundingMode(ERoundingMode roundingMode); |
+ |
+ /** |
+ * Get the width to which the output of format() is padded. |
+ * The width is counted in 16-bit code units. |
+ * @return the format width, or zero if no padding is in effect |
+ * @see #setFormatWidth |
+ * @see #getPadCharacterString |
+ * @see #setPadCharacter |
+ * @see #getPadPosition |
+ * @see #setPadPosition |
+ * @stable ICU 2.0 |
+ */ |
+ virtual int32_t getFormatWidth(void) const; |
+ |
+ /** |
+ * Set the width to which the output of format() is padded. |
+ * The width is counted in 16-bit code units. |
+ * This method also controls whether padding is enabled. |
+ * @param width the width to which to pad the result of |
+ * format(), or zero to disable padding. A negative |
+ * width is equivalent to 0. |
+ * @see #getFormatWidth |
+ * @see #getPadCharacterString |
+ * @see #setPadCharacter |
+ * @see #getPadPosition |
+ * @see #setPadPosition |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setFormatWidth(int32_t width); |
+ |
+ /** |
+ * Get the pad character used to pad to the format width. The |
+ * default is ' '. |
+ * @return a string containing the pad character. This will always |
+ * have a length of one 32-bit code point. |
+ * @see #setFormatWidth |
+ * @see #getFormatWidth |
+ * @see #setPadCharacter |
+ * @see #getPadPosition |
+ * @see #setPadPosition |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UnicodeString getPadCharacterString() const; |
+ |
+ /** |
+ * Set the character used to pad to the format width. If padding |
+ * is not enabled, then this will take effect if padding is later |
+ * enabled. |
+ * @param padChar a string containing the pad charcter. If the string |
+ * has length 0, then the pad characer is set to ' '. Otherwise |
+ * padChar.char32At(0) will be used as the pad character. |
+ * @see #setFormatWidth |
+ * @see #getFormatWidth |
+ * @see #getPadCharacterString |
+ * @see #getPadPosition |
+ * @see #setPadPosition |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setPadCharacter(const UnicodeString &padChar); |
+ |
+ /** |
+ * Get the position at which padding will take place. This is the location |
+ * at which padding will be inserted if the result of format() |
+ * is shorter than the format width. |
+ * @return the pad position, one of kPadBeforePrefix, |
+ * kPadAfterPrefix, kPadBeforeSuffix, or |
+ * kPadAfterSuffix. |
+ * @see #setFormatWidth |
+ * @see #getFormatWidth |
+ * @see #setPadCharacter |
+ * @see #getPadCharacterString |
+ * @see #setPadPosition |
+ * @see #EPadPosition |
+ * @stable ICU 2.0 |
+ */ |
+ virtual EPadPosition getPadPosition(void) const; |
+ |
+ /** |
+ * Set the position at which padding will take place. This is the location |
+ * at which padding will be inserted if the result of format() |
+ * is shorter than the format width. This has no effect unless padding is |
+ * enabled. |
+ * @param padPos the pad position, one of kPadBeforePrefix, |
+ * kPadAfterPrefix, kPadBeforeSuffix, or |
+ * kPadAfterSuffix. |
+ * @see #setFormatWidth |
+ * @see #getFormatWidth |
+ * @see #setPadCharacter |
+ * @see #getPadCharacterString |
+ * @see #getPadPosition |
+ * @see #EPadPosition |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setPadPosition(EPadPosition padPos); |
+ |
+ /** |
+ * Return whether or not scientific notation is used. |
+ * @return TRUE if this object formats and parses scientific notation |
+ * @see #setScientificNotation |
+ * @see #getMinimumExponentDigits |
+ * @see #setMinimumExponentDigits |
+ * @see #isExponentSignAlwaysShown |
+ * @see #setExponentSignAlwaysShown |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UBool isScientificNotation(void); |
+ |
+ /** |
+ * Set whether or not scientific notation is used. When scientific notation |
+ * is used, the effective maximum number of integer digits is <= 8. If the |
+ * maximum number of integer digits is set to more than 8, the effective |
+ * maximum will be 1. This allows this call to generate a 'default' scientific |
+ * number format without additional changes. |
+ * @param useScientific TRUE if this object formats and parses scientific |
+ * notation |
+ * @see #isScientificNotation |
+ * @see #getMinimumExponentDigits |
+ * @see #setMinimumExponentDigits |
+ * @see #isExponentSignAlwaysShown |
+ * @see #setExponentSignAlwaysShown |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setScientificNotation(UBool useScientific); |
+ |
+ /** |
+ * Return the minimum exponent digits that will be shown. |
+ * @return the minimum exponent digits that will be shown |
+ * @see #setScientificNotation |
+ * @see #isScientificNotation |
+ * @see #setMinimumExponentDigits |
+ * @see #isExponentSignAlwaysShown |
+ * @see #setExponentSignAlwaysShown |
+ * @stable ICU 2.0 |
+ */ |
+ virtual int8_t getMinimumExponentDigits(void) const; |
+ |
+ /** |
+ * Set the minimum exponent digits that will be shown. This has no |
+ * effect unless scientific notation is in use. |
+ * @param minExpDig a value >= 1 indicating the fewest exponent digits |
+ * that will be shown. Values less than 1 will be treated as 1. |
+ * @see #setScientificNotation |
+ * @see #isScientificNotation |
+ * @see #getMinimumExponentDigits |
+ * @see #isExponentSignAlwaysShown |
+ * @see #setExponentSignAlwaysShown |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setMinimumExponentDigits(int8_t minExpDig); |
+ |
+ /** |
+ * Return whether the exponent sign is always shown. |
+ * @return TRUE if the exponent is always prefixed with either the |
+ * localized minus sign or the localized plus sign, false if only negative |
+ * exponents are prefixed with the localized minus sign. |
+ * @see #setScientificNotation |
+ * @see #isScientificNotation |
+ * @see #setMinimumExponentDigits |
+ * @see #getMinimumExponentDigits |
+ * @see #setExponentSignAlwaysShown |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UBool isExponentSignAlwaysShown(void); |
+ |
+ /** |
+ * Set whether the exponent sign is always shown. This has no effect |
+ * unless scientific notation is in use. |
+ * @param expSignAlways TRUE if the exponent is always prefixed with either |
+ * the localized minus sign or the localized plus sign, false if only |
+ * negative exponents are prefixed with the localized minus sign. |
+ * @see #setScientificNotation |
+ * @see #isScientificNotation |
+ * @see #setMinimumExponentDigits |
+ * @see #getMinimumExponentDigits |
+ * @see #isExponentSignAlwaysShown |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setExponentSignAlwaysShown(UBool expSignAlways); |
+ |
+ /** |
+ * Return the grouping size. Grouping size is the number of digits between |
+ * grouping separators in the integer portion of a number. For example, |
+ * in the number "123,456.78", the grouping size is 3. |
+ * |
+ * @return the grouping size. |
+ * @see setGroupingSize |
+ * @see NumberFormat::isGroupingUsed |
+ * @see DecimalFormatSymbols::getGroupingSeparator |
+ * @stable ICU 2.0 |
+ */ |
+ int32_t getGroupingSize(void) const; |
+ |
+ /** |
+ * Set the grouping size. Grouping size is the number of digits between |
+ * grouping separators in the integer portion of a number. For example, |
+ * in the number "123,456.78", the grouping size is 3. |
+ * |
+ * @param newValue the new value of the grouping size. |
+ * @see getGroupingSize |
+ * @see NumberFormat::setGroupingUsed |
+ * @see DecimalFormatSymbols::setGroupingSeparator |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setGroupingSize(int32_t newValue); |
+ |
+ /** |
+ * Return the secondary grouping size. In some locales one |
+ * grouping interval is used for the least significant integer |
+ * digits (the primary grouping size), and another is used for all |
+ * others (the secondary grouping size). A formatter supporting a |
+ * secondary grouping size will return a positive integer unequal |
+ * to the primary grouping size returned by |
+ * getGroupingSize(). For example, if the primary |
+ * grouping size is 4, and the secondary grouping size is 2, then |
+ * the number 123456789 formats as "1,23,45,6789", and the pattern |
+ * appears as "#,##,###0". |
+ * @return the secondary grouping size, or a value less than |
+ * one if there is none |
+ * @see setSecondaryGroupingSize |
+ * @see NumberFormat::isGroupingUsed |
+ * @see DecimalFormatSymbols::getGroupingSeparator |
+ * @stable ICU 2.4 |
+ */ |
+ int32_t getSecondaryGroupingSize(void) const; |
+ |
+ /** |
+ * Set the secondary grouping size. If set to a value less than 1, |
+ * then secondary grouping is turned off, and the primary grouping |
+ * size is used for all intervals, not just the least significant. |
+ * |
+ * @param newValue the new value of the secondary grouping size. |
+ * @see getSecondaryGroupingSize |
+ * @see NumberFormat#setGroupingUsed |
+ * @see DecimalFormatSymbols::setGroupingSeparator |
+ * @stable ICU 2.4 |
+ */ |
+ virtual void setSecondaryGroupingSize(int32_t newValue); |
+ |
+ /** |
+ * Allows you to get the behavior of the decimal separator with integers. |
+ * (The decimal separator will always appear with decimals.) |
+ * |
+ * @return TRUE if the decimal separator always appear with decimals. |
+ * Example: Decimal ON: 12345 -> 12345.; OFF: 12345 -> 12345 |
+ * @stable ICU 2.0 |
+ */ |
+ UBool isDecimalSeparatorAlwaysShown(void) const; |
+ |
+ /** |
+ * Allows you to set the behavior of the decimal separator with integers. |
+ * (The decimal separator will always appear with decimals.) |
+ * |
+ * @param newValue set TRUE if the decimal separator will always appear with decimals. |
+ * Example: Decimal ON: 12345 -> 12345.; OFF: 12345 -> 12345 |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setDecimalSeparatorAlwaysShown(UBool newValue); |
+ |
+ /** |
+ * Synthesizes a pattern string that represents the current state |
+ * of this Format object. |
+ * |
+ * @param result Output param which will receive the pattern. |
+ * Previous contents are deleted. |
+ * @return A reference to 'result'. |
+ * @see applyPattern |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UnicodeString& toPattern(UnicodeString& result) const; |
+ |
+ /** |
+ * Synthesizes a localized pattern string that represents the current |
+ * state of this Format object. |
+ * |
+ * @param result Output param which will receive the localized pattern. |
+ * Previous contents are deleted. |
+ * @return A reference to 'result'. |
+ * @see applyPattern |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UnicodeString& toLocalizedPattern(UnicodeString& result) const; |
+ |
+ /** |
+ * Apply the given pattern to this Format object. A pattern is a |
+ * short-hand specification for the various formatting properties. |
+ * These properties can also be changed individually through the |
+ * various setter methods. |
+ * <P> |
+ * There is no limit to integer digits are set |
+ * by this routine, since that is the typical end-user desire; |
+ * use setMaximumInteger if you want to set a real value. |
+ * For negative numbers, use a second pattern, separated by a semicolon |
+ * <pre> |
+ * . Example "#,#00.0#" -> 1,234.56 |
+ * </pre> |
+ * This means a minimum of 2 integer digits, 1 fraction digit, and |
+ * a maximum of 2 fraction digits. |
+ * <pre> |
+ * . Example: "#,#00.0#;(#,#00.0#)" for negatives in parantheses. |
+ * </pre> |
+ * In negative patterns, the minimum and maximum counts are ignored; |
+ * these are presumed to be set in the positive pattern. |
+ * |
+ * @param pattern The pattern to be applied. |
+ * @param parseError Struct to recieve information on position |
+ * of error if an error is encountered |
+ * @param status Output param set to success/failure code on |
+ * exit. If the pattern is invalid, this will be |
+ * set to a failure result. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void applyPattern(const UnicodeString& pattern, |
+ UParseError& parseError, |
+ UErrorCode& status); |
+ /** |
+ * Sets the pattern. |
+ * @param pattern The pattern to be applied. |
+ * @param status Output param set to success/failure code on |
+ * exit. If the pattern is invalid, this will be |
+ * set to a failure result. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void applyPattern(const UnicodeString& pattern, |
+ UErrorCode& status); |
+ |
+ /** |
+ * Apply the given pattern to this Format object. The pattern |
+ * is assumed to be in a localized notation. A pattern is a |
+ * short-hand specification for the various formatting properties. |
+ * These properties can also be changed individually through the |
+ * various setter methods. |
+ * <P> |
+ * There is no limit to integer digits are set |
+ * by this routine, since that is the typical end-user desire; |
+ * use setMaximumInteger if you want to set a real value. |
+ * For negative numbers, use a second pattern, separated by a semicolon |
+ * <pre> |
+ * . Example "#,#00.0#" -> 1,234.56 |
+ * </pre> |
+ * This means a minimum of 2 integer digits, 1 fraction digit, and |
+ * a maximum of 2 fraction digits. |
+ * |
+ * Example: "#,#00.0#;(#,#00.0#)" for negatives in parantheses. |
+ * |
+ * In negative patterns, the minimum and maximum counts are ignored; |
+ * these are presumed to be set in the positive pattern. |
+ * |
+ * @param pattern The localized pattern to be applied. |
+ * @param parseError Struct to recieve information on position |
+ * of error if an error is encountered |
+ * @param status Output param set to success/failure code on |
+ * exit. If the pattern is invalid, this will be |
+ * set to a failure result. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void applyLocalizedPattern(const UnicodeString& pattern, |
+ UParseError& parseError, |
+ UErrorCode& status); |
+ |
+ /** |
+ * Apply the given pattern to this Format object. |
+ * |
+ * @param pattern The localized pattern to be applied. |
+ * @param status Output param set to success/failure code on |
+ * exit. If the pattern is invalid, this will be |
+ * set to a failure result. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void applyLocalizedPattern(const UnicodeString& pattern, |
+ UErrorCode& status); |
+ |
+ |
+ /** |
+ * Sets the maximum number of digits allowed in the integer portion of a |
+ * number. This override limits the integer digit count to 309. |
+ * |
+ * @param newValue the new value of the maximum number of digits |
+ * allowed in the integer portion of a number. |
+ * @see NumberFormat#setMaximumIntegerDigits |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setMaximumIntegerDigits(int32_t newValue); |
+ |
+ /** |
+ * Sets the minimum number of digits allowed in the integer portion of a |
+ * number. This override limits the integer digit count to 309. |
+ * |
+ * @param newValue the new value of the minimum number of digits |
+ * allowed in the integer portion of a number. |
+ * @see NumberFormat#setMinimumIntegerDigits |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setMinimumIntegerDigits(int32_t newValue); |
+ |
+ /** |
+ * Sets the maximum number of digits allowed in the fraction portion of a |
+ * number. This override limits the fraction digit count to 340. |
+ * |
+ * @param newValue the new value of the maximum number of digits |
+ * allowed in the fraction portion of a number. |
+ * @see NumberFormat#setMaximumFractionDigits |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setMaximumFractionDigits(int32_t newValue); |
+ |
+ /** |
+ * Sets the minimum number of digits allowed in the fraction portion of a |
+ * number. This override limits the fraction digit count to 340. |
+ * |
+ * @param newValue the new value of the minimum number of digits |
+ * allowed in the fraction portion of a number. |
+ * @see NumberFormat#setMinimumFractionDigits |
+ * @stable ICU 2.0 |
+ */ |
+ virtual void setMinimumFractionDigits(int32_t newValue); |
+ |
+ /** |
+ * Returns the minimum number of significant digits that will be |
+ * displayed. This value has no effect unless areSignificantDigitsUsed() |
+ * returns true. |
+ * @return the fewest significant digits that will be shown |
+ * @stable ICU 3.0 |
+ */ |
+ int32_t getMinimumSignificantDigits() const; |
+ |
+ /** |
+ * Returns the maximum number of significant digits that will be |
+ * displayed. This value has no effect unless areSignificantDigitsUsed() |
+ * returns true. |
+ * @return the most significant digits that will be shown |
+ * @stable ICU 3.0 |
+ */ |
+ int32_t getMaximumSignificantDigits() const; |
+ |
+ /** |
+ * Sets the minimum number of significant digits that will be |
+ * displayed. If <code>min</code> is less than one then it is set |
+ * to one. If the maximum significant digits count is less than |
+ * <code>min</code>, then it is set to <code>min</code>. This |
+ * value has no effect unless areSignificantDigits() returns true. |
+ * @param min the fewest significant digits to be shown |
+ * @stable ICU 3.0 |
+ */ |
+ void setMinimumSignificantDigits(int32_t min); |
+ |
+ /** |
+ * Sets the maximum number of significant digits that will be |
+ * displayed. If <code>max</code> is less than one then it is set |
+ * to one. If the minimum significant digits count is greater |
+ * than <code>max</code>, then it is set to <code>max</code>. |
+ * This value has no effect unless areSignificantDigits() returns |
+ * true. |
+ * @param max the most significant digits to be shown |
+ * @stable ICU 3.0 |
+ */ |
+ void setMaximumSignificantDigits(int32_t max); |
+ |
+ /** |
+ * Returns true if significant digits are in use, or false if |
+ * integer and fraction digit counts are in use. |
+ * @return true if significant digits are in use |
+ * @stable ICU 3.0 |
+ */ |
+ UBool areSignificantDigitsUsed() const; |
+ |
+ /** |
+ * Sets whether significant digits are in use, or integer and |
+ * fraction digit counts are in use. |
+ * @param useSignificantDigits true to use significant digits, or |
+ * false to use integer and fraction digit counts |
+ * @stable ICU 3.0 |
+ */ |
+ void setSignificantDigitsUsed(UBool useSignificantDigits); |
+ |
+ public: |
+ /** |
+ * Sets the currency used to display currency |
+ * amounts. This takes effect immediately, if this format is a |
+ * currency format. If this format is not a currency format, then |
+ * the currency is used if and when this object becomes a |
+ * currency format through the application of a new pattern. |
+ * @param theCurrency a 3-letter ISO code indicating new currency |
+ * to use. It need not be null-terminated. May be the empty |
+ * string or NULL to indicate no currency. |
+ * @param ec input-output error code |
+ * @stable ICU 3.0 |
+ */ |
+ virtual void setCurrency(const UChar* theCurrency, UErrorCode& ec); |
+ |
+ /** |
+ * Sets the currency used to display currency amounts. See |
+ * setCurrency(const UChar*, UErrorCode&). |
+ * @deprecated ICU 3.0. Use setCurrency(const UChar*, UErrorCode&). |
+ */ |
+ virtual void setCurrency(const UChar* theCurrency); |
+ |
+ /** |
+ * The resource tags we use to retrieve decimal format data from |
+ * locale resource bundles. |
+ * @deprecated ICU 3.4. This string has no public purpose. Please don't use it. |
+ */ |
+ static const char fgNumberPatterns[]; |
+ |
+public: |
+ |
+ /** |
+ * Return the class ID for this class. This is useful only for |
+ * comparing to a return value from getDynamicClassID(). For example: |
+ * <pre> |
+ * . Base* polymorphic_pointer = createPolymorphicObject(); |
+ * . if (polymorphic_pointer->getDynamicClassID() == |
+ * . Derived::getStaticClassID()) ... |
+ * </pre> |
+ * @return The class ID for all objects of this class. |
+ * @stable ICU 2.0 |
+ */ |
+ static UClassID U_EXPORT2 getStaticClassID(void); |
+ |
+ /** |
+ * Returns a unique class ID POLYMORPHICALLY. Pure virtual override. |
+ * This method is to implement a simple version of RTTI, since not all |
+ * C++ compilers support genuine RTTI. Polymorphic operator==() and |
+ * clone() methods call this method. |
+ * |
+ * @return The class ID for this object. All objects of a |
+ * given class have the same class ID. Objects of |
+ * other classes have different class IDs. |
+ * @stable ICU 2.0 |
+ */ |
+ virtual UClassID getDynamicClassID(void) const; |
+ |
+private: |
+ |
+ DecimalFormat(); // default constructor not implemented |
+ |
+ int32_t precision() const; |
+ |
+ /** |
+ * Initialize all fields of a new DecimalFormatter. |
+ * Common code for use by constructors. |
+ */ |
+ void init(); |
+ |
+ /** |
+ * Do real work of constructing a new DecimalFormat. |
+ */ |
+ void construct(UErrorCode& status, |
+ UParseError& parseErr, |
+ const UnicodeString* pattern = 0, |
+ DecimalFormatSymbols* symbolsToAdopt = 0 |
+ ); |
+ |
+ /** |
+ * Does the real work of generating a pattern. |
+ * |
+ * @param result Output param which will receive the pattern. |
+ * Previous contents are deleted. |
+ * @param localized TRUE return localized pattern. |
+ * @return A reference to 'result'. |
+ */ |
+ UnicodeString& toPattern(UnicodeString& result, UBool localized) const; |
+ |
+ /** |
+ * Does the real work of applying a pattern. |
+ * @param pattern The pattern to be applied. |
+ * @param localized If true, the pattern is localized; else false. |
+ * @param parseError Struct to recieve information on position |
+ * of error if an error is encountered |
+ * @param status Output param set to success/failure code on |
+ * exit. If the pattern is invalid, this will be |
+ * set to a failure result. |
+ */ |
+ void applyPattern(const UnicodeString& pattern, |
+ UBool localized, |
+ UParseError& parseError, |
+ UErrorCode& status); |
+ |
+ /* |
+ * similar to applyPattern, but without re-gen affix for currency |
+ */ |
+ void applyPatternInternally(const UnicodeString& pluralCount, |
+ const UnicodeString& pattern, |
+ UBool localized, |
+ UParseError& parseError, |
+ UErrorCode& status); |
+ |
+ /* |
+ * only apply pattern without expand affixes |
+ */ |
+ void applyPatternWithoutExpandAffix(const UnicodeString& pattern, |
+ UBool localized, |
+ UParseError& parseError, |
+ UErrorCode& status); |
+ |
+ |
+ /* |
+ * expand affixes (after apply patter) and re-compute fFormatWidth |
+ */ |
+ void expandAffixAdjustWidth(const UnicodeString* pluralCount); |
+ |
+ |
+ /** |
+ * Do the work of formatting a number, either a double or a long. |
+ * |
+ * @param appendTo Output parameter to receive result. |
+ * Result is appended to existing contents. |
+ * @param handler Records information about field positions. |
+ * @param digits the digits to be formatted. |
+ * @param isInteger if TRUE format the digits as Integer. |
+ * @return Reference to 'appendTo' parameter. |
+ */ |
+ UnicodeString& subformat(UnicodeString& appendTo, |
+ FieldPositionHandler& handler, |
+ DigitList& digits, |
+ UBool isInteger) const; |
+ |
+ |
+ void parse(const UnicodeString& text, |
+ Formattable& result, |
+ ParsePosition& pos, |
+ UBool parseCurrency) const; |
+ |
+ enum { |
+ fgStatusInfinite, |
+ fgStatusLength // Leave last in list. |
+ } StatusFlags; |
+ |
+ UBool subparse(const UnicodeString& text, |
+ const UnicodeString* negPrefix, |
+ const UnicodeString* negSuffix, |
+ const UnicodeString* posPrefix, |
+ const UnicodeString* posSuffix, |
+ UBool currencyParsing, |
+ int8_t type, |
+ ParsePosition& parsePosition, |
+ DigitList& digits, UBool* status, |
+ UChar* currency) const; |
+ |
+ // Mixed style parsing for currency. |
+ // It parses against the current currency pattern |
+ // using complex affix comparison |
+ // parses against the currency plural patterns using complex affix comparison, |
+ // and parses against the current pattern using simple affix comparison. |
+ UBool parseForCurrency(const UnicodeString& text, |
+ ParsePosition& parsePosition, |
+ DigitList& digits, |
+ UBool* status, |
+ UChar* currency) const; |
+ |
+ int32_t skipPadding(const UnicodeString& text, int32_t position) const; |
+ |
+ int32_t compareAffix(const UnicodeString& input, |
+ int32_t pos, |
+ UBool isNegative, |
+ UBool isPrefix, |
+ const UnicodeString* affixPat, |
+ UBool currencyParsing, |
+ int8_t type, |
+ UChar* currency) const; |
+ |
+ static int32_t compareSimpleAffix(const UnicodeString& affix, |
+ const UnicodeString& input, |
+ int32_t pos); |
+ |
+ static int32_t skipRuleWhiteSpace(const UnicodeString& text, int32_t pos); |
+ |
+ static int32_t skipUWhiteSpace(const UnicodeString& text, int32_t pos); |
+ |
+ int32_t compareComplexAffix(const UnicodeString& affixPat, |
+ const UnicodeString& input, |
+ int32_t pos, |
+ int8_t type, |
+ UChar* currency) const; |
+ |
+ static int32_t match(const UnicodeString& text, int32_t pos, UChar32 ch); |
+ |
+ static int32_t match(const UnicodeString& text, int32_t pos, const UnicodeString& str); |
+ |
+ /** |
+ * Get a decimal format symbol. |
+ * Returns a const reference to the symbol string. |
+ * @internal |
+ */ |
+ inline const UnicodeString &getConstSymbol(DecimalFormatSymbols::ENumberFormatSymbol symbol) const; |
+ |
+ int32_t appendAffix(UnicodeString& buf, |
+ double number, |
+ FieldPositionHandler& handler, |
+ UBool isNegative, |
+ UBool isPrefix) const; |
+ |
+ /** |
+ * Append an affix to the given UnicodeString, using quotes if |
+ * there are special characters. Single quotes themselves must be |
+ * escaped in either case. |
+ */ |
+ void appendAffixPattern(UnicodeString& appendTo, const UnicodeString& affix, |
+ UBool localized) const; |
+ |
+ void appendAffixPattern(UnicodeString& appendTo, |
+ const UnicodeString* affixPattern, |
+ const UnicodeString& expAffix, UBool localized) const; |
+ |
+ void expandAffix(const UnicodeString& pattern, |
+ UnicodeString& affix, |
+ double number, |
+ FieldPositionHandler& handler, |
+ UBool doFormat, |
+ const UnicodeString* pluralCount) const; |
+ |
+ void expandAffixes(const UnicodeString* pluralCount); |
+ |
+ void addPadding(UnicodeString& appendTo, |
+ FieldPositionHandler& handler, |
+ int32_t prefixLen, int32_t suffixLen) const; |
+ |
+ UBool isGroupingPosition(int32_t pos) const; |
+ |
+ void setCurrencyForSymbols(); |
+ |
+ // similar to setCurrency without re-compute the affixes for currency. |
+ // If currency changes, the affix pattern for currency is not changed, |
+ // but the affix will be changed. So, affixes need to be |
+ // re-computed in setCurrency(), but not in setCurrencyInternally(). |
+ virtual void setCurrencyInternally(const UChar* theCurrency, UErrorCode& ec); |
+ |
+ // set up currency affix patterns for mix parsing. |
+ // The patterns saved here are the affix patterns of default currency |
+ // pattern and the unique affix patterns of the plural currency patterns. |
+ // Those patterns are used by parseForCurrency(). |
+ void setupCurrencyAffixPatterns(UErrorCode& status); |
+ |
+ // set up the currency affixes used in currency plural formatting. |
+ // It sets up both fAffixesForCurrency for currency pattern if the current |
+ // pattern contains 3 currency signs, |
+ // and it sets up fPluralAffixesForCurrency for currency plural patterns. |
+ void setupCurrencyAffixes(const UnicodeString& pattern, |
+ UBool setupForCurrentPattern, |
+ UBool setupForPluralPattern, |
+ UErrorCode& status); |
+ |
+ // hashtable operations |
+ Hashtable* initHashForAffixPattern(UErrorCode& status); |
+ Hashtable* initHashForAffix(UErrorCode& status); |
+ |
+ void deleteHashForAffixPattern(); |
+ void deleteHashForAffix(Hashtable*& table); |
+ |
+ void copyHashForAffixPattern(const Hashtable* source, |
+ Hashtable* target, UErrorCode& status); |
+ void copyHashForAffix(const Hashtable* source, |
+ Hashtable* target, UErrorCode& status); |
+ |
+ UnicodeString& _format(int64_t number, |
+ UnicodeString& appendTo, |
+ FieldPositionHandler& handler) const; |
+ UnicodeString& _format(double number, |
+ UnicodeString& appendTo, |
+ FieldPositionHandler& handler) const; |
+ UnicodeString& _format(const DigitList &number, |
+ UnicodeString& appendTo, |
+ FieldPositionHandler& handler, |
+ UErrorCode &status) const; |
+ |
+ // currency sign count |
+ enum { |
+ fgCurrencySignCountZero, |
+ fgCurrencySignCountInSymbolFormat, |
+ fgCurrencySignCountInISOFormat, |
+ fgCurrencySignCountInPluralFormat |
+ } CurrencySignCount; |
+ |
+ /** |
+ * Constants. |
+ */ |
+ |
+ UnicodeString fPositivePrefix; |
+ UnicodeString fPositiveSuffix; |
+ UnicodeString fNegativePrefix; |
+ UnicodeString fNegativeSuffix; |
+ UnicodeString* fPosPrefixPattern; |
+ UnicodeString* fPosSuffixPattern; |
+ UnicodeString* fNegPrefixPattern; |
+ UnicodeString* fNegSuffixPattern; |
+ |
+ /** |
+ * Formatter for ChoiceFormat-based currency names. If this field |
+ * is not null, then delegate to it to format currency symbols. |
+ * @since ICU 2.6 |
+ */ |
+ ChoiceFormat* fCurrencyChoice; |
+ |
+ DigitList * fMultiplier; // NULL for multiplier of one |
+ int32_t fGroupingSize; |
+ int32_t fGroupingSize2; |
+ UBool fDecimalSeparatorAlwaysShown; |
+ DecimalFormatSymbols* fSymbols; |
+ |
+ UBool fUseSignificantDigits; |
+ int32_t fMinSignificantDigits; |
+ int32_t fMaxSignificantDigits; |
+ |
+ UBool fUseExponentialNotation; |
+ int8_t fMinExponentDigits; |
+ UBool fExponentSignAlwaysShown; |
+ |
+ DigitList* fRoundingIncrement; // NULL if no rounding increment specified. |
+ ERoundingMode fRoundingMode; |
+ |
+ UChar32 fPad; |
+ int32_t fFormatWidth; |
+ EPadPosition fPadPosition; |
+ |
+ /* |
+ * Following are used for currency format |
+ */ |
+ // pattern used in this formatter |
+ UnicodeString fFormatPattern; |
+ // style is only valid when decimal formatter is constructed by |
+ // DecimalFormat(pattern, decimalFormatSymbol, style) |
+ int fStyle; |
+ /* |
+ * Represents whether this is a currency format, and which |
+ * currency format style. |
+ * 0: not currency format type; |
+ * 1: currency style -- symbol name, such as "$" for US dollar. |
+ * 2: currency style -- ISO name, such as USD for US dollar. |
+ * 3: currency style -- plural long name, such as "US Dollar" for |
+ * "1.00 US Dollar", or "US Dollars" for |
+ * "3.00 US Dollars". |
+ */ |
+ int fCurrencySignCount; |
+ |
+ |
+ /* For currency parsing purose, |
+ * Need to remember all prefix patterns and suffix patterns of |
+ * every currency format pattern, |
+ * including the pattern of default currecny style |
+ * and plural currency style. And the patterns are set through applyPattern. |
+ */ |
+ // TODO: innerclass? |
+ /* This is not needed in the class declaration, so it is moved into decimfmp.cpp |
+ struct AffixPatternsForCurrency : public UMemory { |
+ // negative prefix pattern |
+ UnicodeString negPrefixPatternForCurrency; |
+ // negative suffix pattern |
+ UnicodeString negSuffixPatternForCurrency; |
+ // positive prefix pattern |
+ UnicodeString posPrefixPatternForCurrency; |
+ // positive suffix pattern |
+ UnicodeString posSuffixPatternForCurrency; |
+ int8_t patternType; |
+ |
+ AffixPatternsForCurrency(const UnicodeString& negPrefix, |
+ const UnicodeString& negSuffix, |
+ const UnicodeString& posPrefix, |
+ const UnicodeString& posSuffix, |
+ int8_t type) { |
+ negPrefixPatternForCurrency = negPrefix; |
+ negSuffixPatternForCurrency = negSuffix; |
+ posPrefixPatternForCurrency = posPrefix; |
+ posSuffixPatternForCurrency = posSuffix; |
+ patternType = type; |
+ } |
+ }; |
+ */ |
+ |
+ /* affix for currency formatting when the currency sign in the pattern |
+ * equals to 3, such as the pattern contains 3 currency sign or |
+ * the formatter style is currency plural format style. |
+ */ |
+ /* This is not needed in the class declaration, so it is moved into decimfmp.cpp |
+ struct AffixesForCurrency : public UMemory { |
+ // negative prefix |
+ UnicodeString negPrefixForCurrency; |
+ // negative suffix |
+ UnicodeString negSuffixForCurrency; |
+ // positive prefix |
+ UnicodeString posPrefixForCurrency; |
+ // positive suffix |
+ UnicodeString posSuffixForCurrency; |
+ |
+ int32_t formatWidth; |
+ |
+ AffixesForCurrency(const UnicodeString& negPrefix, |
+ const UnicodeString& negSuffix, |
+ const UnicodeString& posPrefix, |
+ const UnicodeString& posSuffix) { |
+ negPrefixForCurrency = negPrefix; |
+ negSuffixForCurrency = negSuffix; |
+ posPrefixForCurrency = posPrefix; |
+ posSuffixForCurrency = posSuffix; |
+ } |
+ }; |
+ */ |
+ |
+ // Affix pattern set for currency. |
+ // It is a set of AffixPatternsForCurrency, |
+ // each element of the set saves the negative prefix pattern, |
+ // negative suffix pattern, positive prefix pattern, |
+ // and positive suffix pattern of a pattern. |
+ // It is used for currency mixed style parsing. |
+ // It is actually is a set. |
+ // The set contains the default currency pattern from the locale, |
+ // and the currency plural patterns. |
+ // Since it is a set, it does not contain duplicated items. |
+ // For example, if 2 currency plural patterns are the same, only one pattern |
+ // is included in the set. When parsing, we do not check whether the plural |
+ // count match or not. |
+ Hashtable* fAffixPatternsForCurrency; |
+ |
+ // Following 2 are affixes for currency. |
+ // It is a hash map from plural count to AffixesForCurrency. |
+ // AffixesForCurrency saves the negative prefix, |
+ // negative suffix, positive prefix, and positive suffix of a pattern. |
+ // It is used during currency formatting only when the currency sign count |
+ // is 3. In which case, the affixes are getting from here, not |
+ // from the fNegativePrefix etc. |
+ Hashtable* fAffixesForCurrency; // for current pattern |
+ Hashtable* fPluralAffixesForCurrency; // for plural pattern |
+ |
+ // Information needed for DecimalFormat to format/parse currency plural. |
+ CurrencyPluralInfo* fCurrencyPluralInfo; |
+ |
+protected: |
+ |
+ /** |
+ * Returns the currency in effect for this formatter. Subclasses |
+ * should override this method as needed. Unlike getCurrency(), |
+ * this method should never return "". |
+ * @result output parameter for null-terminated result, which must |
+ * have a capacity of at least 4 |
+ * @internal |
+ */ |
+ virtual void getEffectiveCurrency(UChar* result, UErrorCode& ec) const; |
+ |
+ /** number of integer digits |
+ * @stable ICU 2.4 |
+ */ |
+ static const int32_t kDoubleIntegerDigits; |
+ /** number of fraction digits |
+ * @stable ICU 2.4 |
+ */ |
+ static const int32_t kDoubleFractionDigits; |
+ |
+ /** |
+ * When someone turns on scientific mode, we assume that more than this |
+ * number of digits is due to flipping from some other mode that didn't |
+ * restrict the maximum, and so we force 1 integer digit. We don't bother |
+ * to track and see if someone is using exponential notation with more than |
+ * this number, it wouldn't make sense anyway, and this is just to make sure |
+ * that someone turning on scientific mode with default settings doesn't |
+ * end up with lots of zeroes. |
+ * @stable ICU 2.8 |
+ */ |
+ static const int32_t kMaxScientificIntegerDigits; |
+}; |
+ |
+inline UnicodeString& |
+DecimalFormat::format(const Formattable& obj, |
+ UnicodeString& appendTo, |
+ UErrorCode& status) const { |
+ // Don't use Format:: - use immediate base class only, |
+ // in case immediate base modifies behavior later. |
+ return NumberFormat::format(obj, appendTo, status); |
+} |
+ |
+inline UnicodeString& |
+DecimalFormat::format(double number, |
+ UnicodeString& appendTo) const { |
+ FieldPosition pos(0); |
+ return format(number, appendTo, pos); |
+} |
+ |
+inline UnicodeString& |
+DecimalFormat::format(int32_t number, |
+ UnicodeString& appendTo) const { |
+ FieldPosition pos(0); |
+ return format((int64_t)number, appendTo, pos); |
+} |
+ |
+inline const UnicodeString & |
+DecimalFormat::getConstSymbol(DecimalFormatSymbols::ENumberFormatSymbol symbol) const { |
+ return fSymbols->getConstSymbol(symbol); |
+} |
+ |
+U_NAMESPACE_END |
+ |
+#endif /* #if !UCONFIG_NO_FORMATTING */ |
+ |
+#endif // _DECIMFMT |
+//eof |
Property changes on: icu46/source/i18n/unicode/decimfmt.h |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |