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71ec92b67c
Now that this is not in common.h, perhaps it is acceptable to move this documentation into the header file. Signed-off-by: Simon Glass <sjg@chromium.org>
181 lines
6.8 KiB
C
181 lines
6.8 KiB
C
/*
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* (C) Copyright 2000-2009
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __VSPRINTF_H
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#define __VSPRINTF_H
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ulong simple_strtoul(const char *cp, char **endp, unsigned int base);
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/**
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* strict_strtoul - convert a string to an unsigned long strictly
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* @param cp The string to be converted
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* @param base The number base to use
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* @param res The converted result value
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* @return 0 if conversion is successful and *res is set to the converted
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* value, otherwise it returns -EINVAL and *res is set to 0.
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*
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* strict_strtoul converts a string to an unsigned long only if the
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* string is really an unsigned long string, any string containing
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* any invalid char at the tail will be rejected and -EINVAL is returned,
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* only a newline char at the tail is acceptible because people generally
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* change a module parameter in the following way:
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*
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* echo 1024 > /sys/module/e1000/parameters/copybreak
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*
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* echo will append a newline to the tail.
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*
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* simple_strtoul just ignores the successive invalid characters and
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* return the converted value of prefix part of the string.
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*
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* Copied this function from Linux 2.6.38 commit ID:
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* 521cb40b0c44418a4fd36dc633f575813d59a43d
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*
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*/
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int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
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unsigned long long simple_strtoull(const char *cp, char **endp,
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unsigned int base);
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long simple_strtol(const char *cp, char **endp, unsigned int base);
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void panic(const char *fmt, ...)
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__attribute__ ((format (__printf__, 1, 2), noreturn));
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/**
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* Format a string and place it in a buffer
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*
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* @param buf The buffer to place the result into
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* @param fmt The format string to use
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* @param ... Arguments for the format string
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*
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* The function returns the number of characters written
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* into @buf.
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int sprintf(char *buf, const char *fmt, ...)
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__attribute__ ((format (__printf__, 2, 3)));
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/**
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* Format a string and place it in a buffer (va_list version)
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param args Arguments for the format string
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* @return the number of characters which have been written into
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* the @buf not including the trailing '\0'. If @size is == 0 the function
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* returns 0.
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*
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* If you're not already dealing with a va_list consider using scnprintf().
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int vsprintf(char *buf, const char *fmt, va_list args);
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char *simple_itoa(ulong i);
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#ifdef CONFIG_SYS_VSNPRINTF
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/**
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* Format a string and place it in a buffer
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param ... Arguments for the format string
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* @return the number of characters which would be
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* generated for the given input, excluding the trailing null,
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* as per ISO C99. If the return is greater than or equal to
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* @size, the resulting string is truncated.
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int snprintf(char *buf, size_t size, const char *fmt, ...)
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__attribute__ ((format (__printf__, 3, 4)));
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/**
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* Format a string and place it in a buffer
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param ... Arguments for the format string
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*
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* The return value is the number of characters written into @buf not including
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* the trailing '\0'. If @size is == 0 the function returns 0.
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int scnprintf(char *buf, size_t size, const char *fmt, ...)
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__attribute__ ((format (__printf__, 3, 4)));
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/**
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* Format a string and place it in a buffer (base function)
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param args Arguments for the format string
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* @return The number characters which would be generated for the given
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* input, excluding the trailing '\0', as per ISO C99. Note that fewer
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* characters may be written if this number of characters is >= size.
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*
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* This function follows C99 vsnprintf, but has some extensions:
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* %pS output the name of a text symbol
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* %pF output the name of a function pointer
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* %pR output the address range in a struct resource
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*
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* The function returns the number of characters which would be
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* generated for the given input, excluding the trailing '\0',
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* as per ISO C99.
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*
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* Call this function if you are already dealing with a va_list.
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* You probably want snprintf() instead.
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*/
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int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
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/**
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* Format a string and place it in a buffer (va_list version)
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param args Arguments for the format string
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* @return the number of characters which have been written into
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* the @buf not including the trailing '\0'. If @size is == 0 the function
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* returns 0.
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*
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* If you're not already dealing with a va_list consider using scnprintf().
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
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#else
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/*
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* Use macros to silently drop the size parameter. Note that the 'cn'
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* versions are the same as the 'n' versions since the functions assume
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* there is always enough buffer space when !CONFIG_SYS_VSNPRINTF
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*/
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#define snprintf(buf, size, fmt, args...) sprintf(buf, fmt, ##args)
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#define scnprintf(buf, size, fmt, args...) sprintf(buf, fmt, ##args)
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#define vsnprintf(buf, size, fmt, args...) vsprintf(buf, fmt, ##args)
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#define vscnprintf(buf, size, fmt, args...) vsprintf(buf, fmt, ##args)
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#endif /* CONFIG_SYS_VSNPRINTF */
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#endif
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