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author | Michael Brown | 2015-03-02 15:41:49 +0100 |
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committer | Michael Brown | 2015-03-02 17:35:37 +0100 |
commit | d1f0e89e4e898c877d0f05ee0c1405b62049e795 (patch) | |
tree | f10d98d07ecd1532cf437611d88b407b1f44d062 /src/include/ctype.h | |
parent | [libc] Rewrite unrelicensable portions of stddef.h (diff) | |
download | ipxe-d1f0e89e4e898c877d0f05ee0c1405b62049e795.tar.gz ipxe-d1f0e89e4e898c877d0f05ee0c1405b62049e795.tar.xz ipxe-d1f0e89e4e898c877d0f05ee0c1405b62049e795.zip |
[libc] Rewrite unrelicensable portions of ctype.h
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include/ctype.h')
-rw-r--r-- | src/include/ctype.h | 118 |
1 files changed, 101 insertions, 17 deletions
diff --git a/src/include/ctype.h b/src/include/ctype.h index e92ecb1c..0d79ecd1 100644 --- a/src/include/ctype.h +++ b/src/include/ctype.h @@ -4,30 +4,114 @@ /** @file * * Character types + * */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); -#define isdigit(c) ((c) >= '0' && (c) <= '9') -#define islower(c) ((c) >= 'a' && (c) <= 'z') -#define isupper(c) ((c) >= 'A' && (c) <= 'Z') -#define isxdigit(c) (isdigit(c) || ((c) >= 'A' && (c) <= 'F') || ((c) >= 'a' && (c) <= 'f')) -#define isprint(c) ((c) >= ' ' && (c) <= '~' ) +/** + * Check if character is a decimal digit + * + * @v character ASCII character + * @ret is_digit Character is a decimal digit + */ +static inline int isdigit ( int character ) { -static inline unsigned char tolower(unsigned char c) -{ - if (isupper(c)) - c -= 'A'-'a'; - return c; + return ( ( character >= '0' ) && ( character <= '9' ) ); } -static inline unsigned char toupper(unsigned char c) -{ - if (islower(c)) - c -= 'a'-'A'; - return c; +/** + * Check if character is a hexadecimal digit + * + * @v character ASCII character + * @ret is_xdigit Character is a hexadecimal digit + */ +static inline int isxdigit ( int character ) { + + return ( ( ( character >= '0' ) && ( character <= '9' ) ) || + ( ( character >= 'A' ) && ( character <= 'F' ) ) || + ( ( character >= 'a' ) && ( character <= 'f' ) ) ); +} + +/** + * Check if character is an upper-case letter + * + * @v character ASCII character + * @ret is_upper Character is an upper-case letter + */ +static inline int isupper ( int character ) { + + return ( ( character >= 'A' ) && ( character <= 'Z' ) ); +} + +/** + * Check if character is a lower-case letter + * + * @v character ASCII character + * @ret is_lower Character is a lower-case letter + */ +static inline int islower ( int character ) { + + return ( ( character >= 'a' ) && ( character <= 'z' ) ); +} + +/** + * Check if character is alphabetic + * + * @v character ASCII character + * @ret is_alpha Character is alphabetic + */ +static inline int isalpha ( int character ) { + + return ( isupper ( character ) || islower ( character ) ); +} + +/** + * Check if character is alphanumeric + * + * @v character ASCII character + * @ret is_alnum Character is alphanumeric + */ +static inline int isalnum ( int character ) { + + return ( isalpha ( character ) || isdigit ( character ) ); +} + +/** + * Check if character is printable + * + * @v character ASCII character + * @ret is_print Character is printable + */ +static inline int isprint ( int character ) { + + return ( ( character >= ' ' ) && ( character <= '~' ) ); +} + +/** + * Convert character to lower case + * + * @v character Character + * @v character Lower-case character + */ +static inline int tolower ( int character ) { + + return ( isupper ( character ) ? + ( character - 'A' + 'a' ) : character ); +} + +/** + * Convert character to upper case + * + * @v character Character + * @v character Upper-case character + */ +static inline int toupper ( int character ) { + + return ( islower ( character ) ? + ( character - 'a' + 'A' ) : character ); } -extern int isspace ( int c ); +extern int isspace ( int character ); #endif /* _CTYPE_H */ |