54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
#ifndef _B_FLOAT_FORMAT_H_
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#define _B_FLOAT_FORMAT_H_
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#include <NumberFormat.h>
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#include <FloatFormatParameters.h>
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class BString;
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class BFloatFormatImpl;
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class BFloatFormat : public BNumberFormat, public BFloatFormatParameters {
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public:
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BFloatFormat(const BFloatFormat &other);
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~BFloatFormat();
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// formatting
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// no-frills version: Simply appends the formatted number to the
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// string buffer. Can fail only with B_NO_MEMORY or B_BAD_VALUE.
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status_t Format(double number, BString *buffer) const;
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// Appends the formatted number to the string buffer. Additionally
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// one can get the positions of certain fields in the formatted
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// number by supplying format_field_position structures with the
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// field_type set respectively. Passing true for allFieldPositions
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// will make the method fill in a format_field_position structure for
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// each field it writes -- the field_type values will be ignored and
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// overwritten.
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// In fieldCount, in case it is non-null, the number of fields
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// written is returned.
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// B_BUFFER_OVERFLOW is returned, if allFieldPositions is true and
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// the positions buffer is too small (fieldCount will be set
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// nevertheless, so that the caller can adjust the buffer size to
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// make them all fit).
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status_t Format(double number, BString *buffer,
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format_field_position *positions,
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int32 positionCount = 1,
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int32 *fieldCount = NULL,
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bool allFieldPositions = false) const;
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// TODO: Format() versions for (char* buffer, size_t bufferSize)
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// instead of BString*. And, of course, versions for the other
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// number types (float).
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// parsing
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// TODO: ...
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BFloatFormat &operator=(const BFloatFormat &other);
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BFloatFormat(BFloatFormatImpl *impl); // conceptually private
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};
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#endif // _B_FLOAT_FORMAT_H_
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