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fec2266dd8
* Use `std::string` for string-formatted values * Make `formatString` and `formatNumber` be `const`
45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
/* SPDX-License-Identifier: MIT */
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#ifndef RGBDS_FORMAT_SPEC_H
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#define RGBDS_FORMAT_SPEC_H
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#include <stddef.h>
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#include <stdint.h>
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#include <string>
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enum FormatState {
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FORMAT_SIGN, // expects '+' or ' ' (optional)
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FORMAT_PREFIX, // expects '#' (optional)
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FORMAT_ALIGN, // expects '-' (optional)
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FORMAT_WIDTH, // expects '0'-'9', max 255 (optional) (leading '0' indicates pad)
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FORMAT_FRAC, // got '.', expects '0'-'9', max 255 (optional)
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FORMAT_DONE, // got [duXxbofs] (required)
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FORMAT_INVALID, // got unexpected character
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};
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class FormatSpec {
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FormatState state;
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int sign;
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bool prefix;
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bool alignLeft;
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bool padZero;
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size_t width;
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bool hasFrac;
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size_t fracWidth;
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int type;
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bool valid;
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public:
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bool isEmpty() const { return !state; }
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bool isValid() const { return valid || state == FORMAT_DONE; }
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bool isFinished() const { return state >= FORMAT_DONE; }
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void useCharacter(int c);
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void finishCharacters();
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std::string formatString(std::string const &value) const;
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std::string formatNumber(uint32_t value) const;
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};
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#endif // RGBDS_FORMAT_SPEC_H
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