simpleformatter.h

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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
* Copyright (C) 2014-2016, International Business Machines
* Corporation and others.  All Rights Reserved.
******************************************************************************
* simpleformatter.h
*/
 
#ifndef __SIMPLEFORMATTER_H__
#define __SIMPLEFORMATTER_H__
 
#include "unicode/utypes.h"
 
#if U_SHOW_CPLUSPLUS_API
 
#include "unicode/unistr.h"
 
U_NAMESPACE_BEGIN
 
// Forward declaration:
namespace number {
namespace impl {
class SimpleModifier;
}
}
 
class U_COMMON_API SimpleFormatter U_FINAL : public UMemory {
public:
    SimpleFormatter() : compiledPattern((char16_t)0) {}
 
    SimpleFormatter(const UnicodeString& pattern, UErrorCode &errorCode) {
        applyPattern(pattern, errorCode);
    }
 
    SimpleFormatter(const UnicodeString& pattern, int32_t min, int32_t max,
                    UErrorCode &errorCode) {
        applyPatternMinMaxArguments(pattern, min, max, errorCode);
    }
 
    SimpleFormatter(const SimpleFormatter& other)
            : compiledPattern(other.compiledPattern) {}
 
    SimpleFormatter &operator=(const SimpleFormatter& other);
 
    ~SimpleFormatter();
 
    UBool applyPattern(const UnicodeString &pattern, UErrorCode &errorCode) {
        return applyPatternMinMaxArguments(pattern, 0, INT32_MAX, errorCode);
    }
 
    UBool applyPatternMinMaxArguments(const UnicodeString &pattern,
                                      int32_t min, int32_t max, UErrorCode &errorCode);
 
    int32_t getArgumentLimit() const {
        return getArgumentLimit(compiledPattern.getBuffer(), compiledPattern.length());
    }
 
    UnicodeString &format(
            const UnicodeString &value0,
            UnicodeString &appendTo, UErrorCode &errorCode) const;
 
    UnicodeString &format(
            const UnicodeString &value0,
            const UnicodeString &value1,
            UnicodeString &appendTo, UErrorCode &errorCode) const;
 
    UnicodeString &format(
            const UnicodeString &value0,
            const UnicodeString &value1,
            const UnicodeString &value2,
            UnicodeString &appendTo, UErrorCode &errorCode) const;
 
    UnicodeString &formatAndAppend(
            const UnicodeString *const *values, int32_t valuesLength,
            UnicodeString &appendTo,
            int32_t *offsets, int32_t offsetsLength, UErrorCode &errorCode) const;
 
    UnicodeString &formatAndReplace(
            const UnicodeString *const *values, int32_t valuesLength,
            UnicodeString &result,
            int32_t *offsets, int32_t offsetsLength, UErrorCode &errorCode) const;
 
    UnicodeString getTextWithNoArguments() const {
        return getTextWithNoArguments(
            compiledPattern.getBuffer(),
            compiledPattern.length(),
            nullptr,
            0);
    }
 
#ifndef U_HIDE_INTERNAL_API
    UnicodeString getTextWithNoArguments(int32_t *offsets, int32_t offsetsLength) const {
        return getTextWithNoArguments(
            compiledPattern.getBuffer(),
            compiledPattern.length(),
            offsets,
            offsetsLength);
    }
#endif // U_HIDE_INTERNAL_API
 
private:
    UnicodeString compiledPattern;
 
    static inline int32_t getArgumentLimit(const char16_t *compiledPattern,
                                              int32_t compiledPatternLength) {
        return compiledPatternLength == 0 ? 0 : compiledPattern[0];
    }
 
    static UnicodeString getTextWithNoArguments(
        const char16_t *compiledPattern,
        int32_t compiledPatternLength,
        int32_t *offsets,
        int32_t offsetsLength);
 
    static UnicodeString &format(
            const char16_t *compiledPattern, int32_t compiledPatternLength,
            const UnicodeString *const *values,
            UnicodeString &result, const UnicodeString *resultCopy, UBool forbidResultAsValue,
            int32_t *offsets, int32_t offsetsLength,
            UErrorCode &errorCode);
 
    // Give access to internals to SimpleModifier for number formatting
    friend class number::impl::SimpleModifier;
};
 
U_NAMESPACE_END
 
#endif /* U_SHOW_CPLUSPLUS_API */
 
#endif  // __SIMPLEFORMATTER_H__