+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2000-2009
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __VSPRINTF_H
#define __VSPRINTF_H
+#include <stdarg.h>
+#include <linux/types.h>
+
+/**
+ * simple_strtoul - convert a string to an unsigned long
+ *
+ * @cp: The string to be converted
+ * @endp: Updated to point to the first character not converted
+ * @base: The number base to use (0 for the default)
+ * Return: value decoded from string (0 if invalid)
+ *
+ * Converts a string to an unsigned long. If there are invalid characters at
+ * the end these are ignored. In the worst case, if all characters are invalid,
+ * 0 is returned
+ *
+ * A hex prefix is supported (e.g. 0x123) regardless of the value of @base.
+ * If found, the base is set to hex (16).
+ *
+ * If @base is 0:
+ * - an octal '0' prefix (e.g. 0777) sets the base to octal (8).
+ * - otherwise the base defaults to decimal (10).
+ */
ulong simple_strtoul(const char *cp, char **endp, unsigned int base);
+/**
+ * hex_strtoul - convert a string in hex to an unsigned long
+ *
+ * @cp: The string to be converted
+ * @endp: Updated to point to the first character not converted
+ * Return: value decoded from string (0 if invalid)
+ *
+ * Converts a hex string to an unsigned long. If there are invalid characters at
+ * the end these are ignored. In the worst case, if all characters are invalid,
+ * 0 is returned
+ */
+unsigned long hextoul(const char *cp, char **endp);
+
+/**
+ * dec_strtoul - convert a string in decimal to an unsigned long
+ *
+ * @cp: The string to be converted
+ * @endp: Updated to point to the first character not converted
+ * Return: value decoded from string (0 if invalid)
+ *
+ * Converts a decimal string to an unsigned long. If there are invalid
+ * characters at the end these are ignored. In the worst case, if all characters
+ * are invalid, 0 is returned
+ */
+unsigned long dectoul(const char *cp, char **endp);
+
/**
* strict_strtoul - convert a string to an unsigned long strictly
- * @param cp The string to be converted
- * @param base The number base to use
- * @param res The converted result value
- * @return 0 if conversion is successful and *res is set to the converted
- * value, otherwise it returns -EINVAL and *res is set to 0.
+ * @cp: The string to be converted
+ * @base: The number base to use (0 for the default)
+ * @res: The converted result value
+ * Return: 0 if conversion is successful and `*res` is set to the converted
+ * value, otherwise it returns -EINVAL and `*res` is set to 0.
*
* strict_strtoul converts a string to an unsigned long only if the
* string is really an unsigned long string, any string containing
*
* echo will append a newline to the tail.
*
- * simple_strtoul just ignores the successive invalid characters and
- * return the converted value of prefix part of the string.
+ * A hex prefix is supported (e.g. 0x123) regardless of the value of @base.
+ * If found, the base is set to hex (16).
+ *
+ * If @base is 0:
+ * - an octal '0' prefix (e.g. 0777) sets the base to octal (8).
+ * - otherwise the base defaults to decimal (10).
*
* Copied this function from Linux 2.6.38 commit ID:
* 521cb40b0c44418a4fd36dc633f575813d59a43d
unsigned long long simple_strtoull(const char *cp, char **endp,
unsigned int base);
long simple_strtol(const char *cp, char **endp, unsigned int base);
+long long simple_strtoll(const char *cp, char **endp, unsigned int base);
+
+/**
+ * trailing_strtol() - extract a trailing integer from a string
+ *
+ * Given a string this finds a trailing number on the string and returns it.
+ * For example, "abc123" would return 123.
+ *
+ * Note that this does not handle a string without a prefix. See dectoul() for
+ * that case.
+ *
+ * @str: String to examine
+ * Return: trailing number if found, else -1
+ */
+long trailing_strtol(const char *str);
+
+/**
+ * trailing_strtoln() - extract a trailing integer from a fixed-length string
+ *
+ * Given a fixed-length string this finds a trailing number on the string
+ * and returns it. For example, "abc123" would return 123. Only the
+ * characters between @str and @end - 1 are examined. If @end is NULL, it is
+ * set to str + strlen(str).
+ *
+ * @str: String to examine
+ * @end: Pointer to end of string to examine, or NULL to use the
+ * whole string
+ * Return: trailing number if found, else -1
+ */
+long trailing_strtoln(const char *str, const char *end);
+
+/**
+ * trailing_strtoln_end() - extract trailing integer from a fixed-length string
+ *
+ * Given a fixed-length string this finds a trailing number on the string
+ * and returns it. For example, "abc123" would return 123. Only the
+ * characters between @str and @end - 1 are examined. If @end is NULL, it is
+ * set to str + strlen(str).
+ *
+ * @str: String to examine
+ * @end: Pointer to end of string to examine, or NULL to use the
+ * whole string
+ * @endp: If non-NULL, this is set to point to the character where the
+ * number starts, e.g. for "mmc0" this would be point to the '0'; if no
+ * trailing number is found, it is set to the end of the string
+ * Return: training number if found, else -1
+ */
+long trailing_strtoln_end(const char *str, const char *end, char const **endp);
+
+/**
+ * panic() - Print a message and reset/hang
+ *
+ * Prints a message on the console(s) and then resets. If CONFIG_PANIC_HANG is
+ * defined, then it will hang instead of resetting.
+ *
+ * @fmt: printf() format string for message, which should not include
+ * \n, followed by arguments
+ */
void panic(const char *fmt, ...)
__attribute__ ((format (__printf__, 1, 2), noreturn));
+/**
+ * panic_str() - Print a message and reset/hang
+ *
+ * Prints a message on the console(s) and then resets. If CONFIG_PANIC_HANG is
+ * defined, then it will hang instead of resetting.
+ *
+ * This function can be used instead of panic() when your board does not
+ * already use printf(), * to keep code size small.
+ *
+ * @str: string to display, which should not include \n
+ */
+void panic_str(const char *str) __attribute__ ((noreturn));
+
/**
* Format a string and place it in a buffer
*
- * @param buf The buffer to place the result into
- * @param fmt The format string to use
- * @param ... Arguments for the format string
+ * @buf: The buffer to place the result into
+ * @fmt: The format string to use
+ * @...: Arguments for the format string
*
* The function returns the number of characters written
* into @buf.
/**
* Format a string and place it in a buffer (va_list version)
*
- * @param buf The buffer to place the result into
- * @param size The size of the buffer, including the trailing null space
- * @param fmt The format string to use
- * @param args Arguments for the format string
- * @return the number of characters which have been written into
- * the @buf not including the trailing '\0'. If @size is == 0 the function
- * returns 0.
+ * @buf: The buffer to place the result into
+ * @fmt: The format string to use
+ * @args: Arguments for the format string
+ * Return: the number of characters which have been written into
+ * the @buf not including the trailing '\0'.
*
* If you're not already dealing with a va_list consider using scnprintf().
*
* See the vsprintf() documentation for format string extensions over C99.
*/
int vsprintf(char *buf, const char *fmt, va_list args);
-char *simple_itoa(ulong i);
-#ifdef CONFIG_SYS_VSNPRINTF
+/**
+ * simple_itoa() - convert an unsigned integer to a string
+ *
+ * This returns a static string containing the decimal representation of the
+ * given value. The returned value may be overwritten by other calls to other
+ * simple... functions, so should be used immediately
+ *
+ * @val: Value to convert
+ * Return: string containing the decimal representation of @val
+ */
+char *simple_itoa(ulong val);
+
+/**
+ * simple_xtoa() - convert an unsigned integer to a hex string
+ *
+ * This returns a static string containing the hexadecimal representation of the
+ * given value. The returned value may be overwritten by other calls to other
+ * simple... functions, so should be used immediately
+ *
+ * @num: Value to convert
+ * Return: string containing the hexecimal representation of @val
+ */
+char *simple_xtoa(ulong num);
+
/**
* Format a string and place it in a buffer
*
- * @param buf The buffer to place the result into
- * @param size The size of the buffer, including the trailing null space
- * @param fmt The format string to use
- * @param ... Arguments for the format string
- * @return the number of characters which would be
+ * @buf: The buffer to place the result into
+ * @size: The size of the buffer, including the trailing null space
+ * @fmt: The format string to use
+ * @...: Arguments for the format string
+ * Return: the number of characters which would be
* generated for the given input, excluding the trailing null,
* as per ISO C99. If the return is greater than or equal to
* @size, the resulting string is truncated.
/**
* Format a string and place it in a buffer
*
- * @param buf The buffer to place the result into
- * @param size The size of the buffer, including the trailing null space
- * @param fmt The format string to use
- * @param ... Arguments for the format string
+ * @buf: The buffer to place the result into
+ * @size: The size of the buffer, including the trailing null space
+ * @fmt: The format string to use
+ * @...: Arguments for the format string
*
* The return value is the number of characters written into @buf not including
* the trailing '\0'. If @size is == 0 the function returns 0.
/**
* Format a string and place it in a buffer (base function)
*
- * @param buf The buffer to place the result into
- * @param size The size of the buffer, including the trailing null space
- * @param fmt The format string to use
- * @param args Arguments for the format string
- * @return The number characters which would be generated for the given
+ * @buf: The buffer to place the result into
+ * @size: The size of the buffer, including the trailing null space
+ * @fmt: The format string to use
+ * @args: Arguments for the format string
+ * Return: The number characters which would be generated for the given
* input, excluding the trailing '\0', as per ISO C99. Note that fewer
* characters may be written if this number of characters is >= size.
*
/**
* Format a string and place it in a buffer (va_list version)
*
- * @param buf The buffer to place the result into
- * @param size The size of the buffer, including the trailing null space
- * @param fmt The format string to use
- * @param args Arguments for the format string
- * @return the number of characters which have been written into
+ * @buf: The buffer to place the result into
+ * @size: The size of the buffer, including the trailing null space
+ * @fmt: The format string to use
+ * @args: Arguments for the format string
+ * Return: the number of characters which have been written into
* the @buf not including the trailing '\0'. If @size is == 0 the function
* returns 0.
*
* See the vsprintf() documentation for format string extensions over C99.
*/
int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
-#else
-/*
- * Use macros to silently drop the size parameter. Note that the 'cn'
- * versions are the same as the 'n' versions since the functions assume
- * there is always enough buffer space when !CONFIG_SYS_VSNPRINTF
- */
-#define snprintf(buf, size, fmt, args...) sprintf(buf, fmt, ##args)
-#define scnprintf(buf, size, fmt, args...) sprintf(buf, fmt, ##args)
-#define vsnprintf(buf, size, fmt, args...) vsprintf(buf, fmt, ##args)
-#define vscnprintf(buf, size, fmt, args...) vsprintf(buf, fmt, ##args)
-#endif /* CONFIG_SYS_VSNPRINTF */
/**
* print_grouped_ull() - print a value with digits grouped by ','
* This prints a value with grouped digits, like 12,345,678 to make it easier
* to read.
*
- * @val: Value to print
- * @digits: Number of digiits to print
+ * @int_val: Value to print
+ * @digits: Number of digiits to print
*/
void print_grouped_ull(unsigned long long int_val, int digits);
+bool str2off(const char *p, loff_t *num);
+bool str2long(const char *p, ulong *num);
+
+/**
+ * strmhz() - Convert a value to a Hz string
+ *
+ * This creates a string indicating the number of MHz of a value. For example,
+ * 2700000 produces "2.7".
+ * @buf: Buffer to hold output string, which must be large enough
+ * @hz: Value to convert
+ */
+char *strmhz(char *buf, unsigned long hz);
+
+/**
+ * str_to_upper() - Convert a string to upper case
+ *
+ * This simply uses toupper() on each character of the string.
+ *
+ * @in: String to convert (must be large enough to hold the output string)
+ * @out: Buffer to put converted string
+ * @len: Number of bytes available in @out (SIZE_MAX for all)
+ */
+void str_to_upper(const char *in, char *out, size_t len);
+
+/**
+ * str_to_list() - Convert a string to a list of string pointers
+ *
+ * Splits a string containing space-delimited substrings into a number of
+ * separate strings, e.g. "this is" becomes {"this", "is", NULL}. If @instr is
+ * empty then this returns just {NULL}. The string should have only a single
+ * space between items, with no leading or trailing spaces.
+ *
+ * @instr: String to process (this is alloced by this function)
+ * Returns: List of string pointers, terminated by NULL. Each entry points to
+ * a string. If @instr is empty, the list consists just of a single NULL entry.
+ * Note that the first entry points to the alloced string.
+ * Returns NULL if out of memory
+ */
+const char **str_to_list(const char *instr);
+
+/**
+ * str_free_list() - Free a string list
+ *
+ * @ptr: String list to free, as created by str_to_list(). This can also be
+ * NULL, in which case the function does nothing
+ */
+void str_free_list(const char **ptr);
+
+/**
+ * vsscanf - Unformat a buffer into a list of arguments
+ * @inp: input buffer
+ * @fmt0: format of buffer
+ * @ap: arguments
+ */
+int vsscanf(const char *inp, char const *fmt0, va_list ap);
+
+/**
+ * sscanf - Unformat a buffer into a list of arguments
+ * @buf: input buffer
+ * @fmt: formatting of buffer
+ * @...: resulting arguments
+ */
+int sscanf(const char *buf, const char *fmt, ...);
+
#endif
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