/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_STRING_CHOICES_H_ #define _LINUX_STRING_CHOICES_H_ /* * Here provide a series of helpers in the str_$TRUE_$FALSE format (you can * also expand some helpers as needed), where $TRUE and $FALSE are their * corresponding literal strings. These helpers can be used in the printing * and also in other places where constant strings are required. Using these * helpers offers the following benefits: * 1) Reducing the hardcoding of strings, which makes the code more elegant * through these simple literal-meaning helpers. * 2) Unifying the output, which prevents the same string from being printed * in various forms, such as enable/disable, enabled/disabled, en/dis. * 3) Deduping by the linker, which results in a smaller binary file. */ #include <linux/types.h> static inline const char *str_enable_disable(bool v) { … } #define str_disable_enable(v) … static inline const char *str_enabled_disabled(bool v) { … } #define str_disabled_enabled(v) … static inline const char *str_hi_lo(bool v) { … } #define str_lo_hi(v) … static inline const char *str_high_low(bool v) { … } #define str_low_high(v) … static inline const char *str_read_write(bool v) { … } #define str_write_read(v) … static inline const char *str_on_off(bool v) { … } #define str_off_on(v) … static inline const char *str_yes_no(bool v) { … } #define str_no_yes(v) … static inline const char *str_up_down(bool v) { … } #define str_down_up(v) … static inline const char *str_true_false(bool v) { … } #define str_false_true(v) … /** * str_plural - Return the simple pluralization based on English counts * @num: Number used for deciding pluralization * * If @num is 1, returns empty string, otherwise returns "s". */ static inline const char *str_plural(size_t num) { … } #endif
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