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@@ -4,30 +4,114 @@
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/** @file
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*
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* Character types
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+ *
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*/
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-FILE_LICENCE ( GPL2_OR_LATER );
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+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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-#define isdigit(c) ((c) >= '0' && (c) <= '9')
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-#define islower(c) ((c) >= 'a' && (c) <= 'z')
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-#define isupper(c) ((c) >= 'A' && (c) <= 'Z')
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-#define isxdigit(c) (isdigit(c) || ((c) >= 'A' && (c) <= 'F') || ((c) >= 'a' && (c) <= 'f'))
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-#define isprint(c) ((c) >= ' ' && (c) <= '~' )
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+/**
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+ * Check if character is a decimal digit
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+ *
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+ * @v character ASCII character
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+ * @ret is_digit Character is a decimal digit
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+ */
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+static inline int isdigit ( int character ) {
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-static inline unsigned char tolower(unsigned char c)
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-{
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- if (isupper(c))
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- c -= 'A'-'a';
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- return c;
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+ return ( ( character >= '0' ) && ( character <= '9' ) );
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}
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-static inline unsigned char toupper(unsigned char c)
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-{
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- if (islower(c))
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- c -= 'a'-'A';
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- return c;
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+/**
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+ * Check if character is a hexadecimal digit
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+ *
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+ * @v character ASCII character
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+ * @ret is_xdigit Character is a hexadecimal digit
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+ */
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+static inline int isxdigit ( int character ) {
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+
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+ return ( ( ( character >= '0' ) && ( character <= '9' ) ) ||
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+ ( ( character >= 'A' ) && ( character <= 'F' ) ) ||
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+ ( ( character >= 'a' ) && ( character <= 'f' ) ) );
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+}
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+
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+/**
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+ * Check if character is an upper-case letter
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+ *
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+ * @v character ASCII character
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+ * @ret is_upper Character is an upper-case letter
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+ */
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+static inline int isupper ( int character ) {
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+
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+ return ( ( character >= 'A' ) && ( character <= 'Z' ) );
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+}
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+
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+/**
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+ * Check if character is a lower-case letter
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+ *
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+ * @v character ASCII character
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+ * @ret is_lower Character is a lower-case letter
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+ */
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+static inline int islower ( int character ) {
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+
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+ return ( ( character >= 'a' ) && ( character <= 'z' ) );
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+}
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+
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+/**
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+ * Check if character is alphabetic
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+ *
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+ * @v character ASCII character
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+ * @ret is_alpha Character is alphabetic
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+ */
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+static inline int isalpha ( int character ) {
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+
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+ return ( isupper ( character ) || islower ( character ) );
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+}
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+
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+/**
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+ * Check if character is alphanumeric
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+ *
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+ * @v character ASCII character
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+ * @ret is_alnum Character is alphanumeric
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+ */
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+static inline int isalnum ( int character ) {
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+
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+ return ( isalpha ( character ) || isdigit ( character ) );
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+}
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+
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+/**
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+ * Check if character is printable
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+ *
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+ * @v character ASCII character
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+ * @ret is_print Character is printable
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+ */
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+static inline int isprint ( int character ) {
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+
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+ return ( ( character >= ' ' ) && ( character <= '~' ) );
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+}
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+
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+/**
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+ * Convert character to lower case
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+ *
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+ * @v character Character
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+ * @v character Lower-case character
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+ */
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+static inline int tolower ( int character ) {
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+
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+ return ( isupper ( character ) ?
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+ ( character - 'A' + 'a' ) : character );
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+}
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+
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+/**
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+ * Convert character to upper case
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+ *
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+ * @v character Character
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+ * @v character Upper-case character
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+ */
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+static inline int toupper ( int character ) {
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+
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+ return ( islower ( character ) ?
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+ ( character - 'a' + 'A' ) : character );
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}
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-extern int isspace ( int c );
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+extern int isspace ( int character );
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#endif /* _CTYPE_H */
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