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Diffstat (limited to 'newlib/libc/stdio/sprintf.c')
| -rw-r--r-- | newlib/libc/stdio/sprintf.c | 635 |
1 files changed, 0 insertions, 635 deletions
diff --git a/newlib/libc/stdio/sprintf.c b/newlib/libc/stdio/sprintf.c deleted file mode 100644 index 1d81ebdf9..000000000 --- a/newlib/libc/stdio/sprintf.c +++ /dev/null @@ -1,635 +0,0 @@ -/* - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the University of California, Berkeley. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -/* -FUNCTION -<<sprintf>>, <<fprintf>>, <<printf>>, <<snprintf>>, <<asprintf>>, <<asnprintf>>---format output - -INDEX - fprintf -INDEX - _fprintf_r -INDEX - printf -INDEX - _printf_r -INDEX - asprintf -INDEX - _asprintf_r -INDEX - sprintf -INDEX - _sprintf_r -INDEX - snprintf -INDEX - _snprintf_r -INDEX - asnprintf -INDEX - _asnprintf_r - -ANSI_SYNOPSIS - #include <stdio.h> - - int printf(const char *<[format]>, ...); - int fprintf(FILE *<[fd]>, const char *<[format]>, ...); - int sprintf(char *<[str]>, const char *<[format]>, ...); - int snprintf(char *<[str]>, size_t <[size]>, const char *<[format]>, - ...); - int asprintf(char **<[strp]>, const char *<[format]>, ...); - char *asnprintf(char *<[str]>, size_t *<[size]>, const char *<[format]>, - ...); - - int _printf_r(struct _reent *<[ptr]>, const char *<[format]>, ...); - int _fprintf_r(struct _reent *<[ptr]>, FILE *<[fd]>, - const char *<[format]>, ...); - int _sprintf_r(struct _reent *<[ptr]>, char *<[str]>, - const char *<[format]>, ...); - int _snprintf_r(struct _reent *<[ptr]>, char *<[str]>, size_t <[size]>, - const char *<[format]>, ...); - int _asprintf_r(struct _reent *<[ptr]>, char **<[strp]>, - const char *<[format]>, ...); - char *_asnprintf_r(struct _reent *<[ptr]>, char *<[str]>, - size_t *<[size]>, const char *<[format]>, ...); - -DESCRIPTION - <<printf>> accepts a series of arguments, applies to each a - format specifier from <<*<[format]>>>, and writes the - formatted data to <<stdout>>, without a terminating NUL - character. The behavior of <<printf>> is undefined if there - are not enough arguments for the format. <<printf>> returns - when it reaches the end of the format string. If there are - more arguments than the format requires, excess arguments are - ignored. - - <<fprintf>> is like <<printf>>, except that output is directed - to the stream <[fd]> rather than <<stdout>>. - - <<sprintf>> is like <<printf>>, except that output is directed - to the buffer <[str]>, and a terminating NUL is output. - Behavior is undefined if more output is generated than the - buffer can hold. - - <<snprintf>> is like <<sprintf>>, except that output is - limited to at most <[size]> bytes, including the terminating - <<NUL>>. As a special case, if <[size]> is 0, <[str]> can be - NULL, and <<snprintf>> merely calculates how many bytes would - be printed. - - <<asprintf>> is like <<sprintf>>, except that the output is - stored in a dynamically allocated buffer, <[pstr]>, which - should be freed later with <<free>>. - - <<asnprintf>> is like <<sprintf>>, except that the return type - is either the original <[str]> if it was large enough, or a - dynamically allocated string if the output exceeds *<[size]>; - the length of the result is returned in *<[size]>. When - dynamic allocation occurs, the contents of the original - <[str]> may have been modified. - - For <<sprintf>>, <<snprintf>>, and <<asnprintf>>, the behavior - is undefined if the output <<*<[str]>>> overlaps with one of - the arguments. Behavior is also undefined if the argument for - <<%n>> within <<*<[format]>>> overlaps another argument. - - <[format]> is a pointer to a character string containing two - types of objects: ordinary characters (other than <<%>>), - which are copied unchanged to the output, and conversion - specifications, each of which is introduced by <<%>>. (To - include <<%>> in the output, use <<%%>> in the format string.) - A conversion specification has the following form: - -. %[<[pos]>][<[flags]>][<[width]>][.<[prec]>][<[size]>]<[type]> - - The fields of the conversion specification have the following - meanings: - - O+ - o <[pos]> - - Conversions normally consume arguments in the order that they - are presented. However, it is possible to consume arguments - out of order, and reuse an argument for more than one - conversion specification (although the behavior is undefined - if the same argument is requested with different types), by - specifying <[pos]>, which is a decimal integer followed by - '$'. The integer must be between 1 and <NL_ARGMAX> from - limits.h, and if argument <<%n$>> is requested, all earlier - arguments must be requested somewhere within <[format]>. If - positional parameters are used, then all conversion - specifications except for <<%%>> must specify a position. - - o <[flags]> - - <[flags]> is an optional sequence of characters which control - output justification, numeric signs, decimal points, trailing - zeros, and octal and hex prefixes. The flag characters are - minus (<<->>), plus (<<+>>), space ( ), zero (<<0>>), sharp - (<<#>>), and quote (<<'>>). They can appear in any - combination, although not all flags can be used for all - conversion specification types. - - o+ - o ' - Since newlib only supports the C locale, this - flag has no effect in this implementation. - But in other locales, when <[type]> is <<i>>, - <<d>>, <<u>>, <<f>>, <<F>>, <<g>>, or <<G>>, - the locale-dependent thousand's separator is - inserted prior to zero padding. - - o - - The result of the conversion is left - justified, and the right is padded with - blanks. If you do not use this flag, the - result is right justified, and padded on the - left. - - o + - The result of a signed conversion (as - determined by <[type]> of <<d>>, <<i>>, <<a>>, - <<A>>, <<e>>, <<E>>, <<f>>, <<F>>, <<g>>, or - <<G>>) will always begin with a plus or minus - sign. (If you do not use this flag, positive - values do not begin with a plus sign.) - - o " " (space) - If the first character of a signed conversion - specification is not a sign, or if a signed - conversion results in no characters, the - result will begin with a space. If the space - ( ) flag and the plus (<<+>>) flag both - appear, the space flag is ignored. - - o 0 - If the <[type]> character is <<d>>, <<i>>, - <<o>>, <<u>>, <<x>>, <<X>>, <<a>>, <<A>>, - <<e>>, <<E>>, <<f>>, <<g>>, or <<G>>: leading - zeros are used to pad the field width - (following any indication of sign or base); no - spaces are used for padding. If the zero - (<<0>>) and minus (<<->>) flags both appear, - the zero (<<0>>) flag will be ignored. For - <<d>>, <<i>>, <<o>>, <<u>>, <<x>>, and <<X>> - conversions, if a precision <[prec]> is - specified, the zero (<<0>>) flag is ignored. - - Note that <<0>> is interpreted as a flag, not - as the beginning of a field width. - - o # - The result is to be converted to an - alternative form, according to the <[type]> - character: - - o+ - o o - Increases precision to force the first - digit of the result to be a zero. - - o x - A non-zero result will have a <<0x>> - prefix. - - o X - A non-zero result will have a <<0X>> - prefix. - - o a, A, e, E, f, or F - The result will always contain a - decimal point even if no digits follow - the point. (Normally, a decimal point - appears only if a digit follows it.) - Trailing zeros are removed. - - o g or G - The result will always contain a - decimal point even if no digits follow - the point. Trailing zeros are not - removed. - - o all others - Undefined. - - o- - o- - - o <[width]> - - <[width]> is an optional minimum field width. You can - either specify it directly as a decimal integer, or - indirectly by using instead an asterisk (<<*>>), in - which case an <<int>> argument is used as the field - width. If positional arguments are used, then the - width must also be specified positionally as <<*m$>>, - with m as a decimal integer. Negative field widths - are treated as specifying the minus (<<->>) flag for - left justfication, along with a positive field width. - The resulting format may be wider than the specified - width. - - o <[prec]> - - <[prec]> is an optional field; if present, it is - introduced with `<<.>>' (a period). You can specify - the precision either directly as a decimal integer or - indirectly by using an asterisk (<<*>>), in which case - an <<int>> argument is used as the precision. If - positional arguments are used, then the precision must - also be specified positionally as <<*m$>>, with m as a - decimal integer. Supplying a negative precision is - equivalent to omitting the precision. If only a - period is specified the precision is zero. The effect - depends on the conversion <[type]>. - - o+ - o d, i, o, u, x, or X - Minimum number of digits to appear. If no - precision is given, defaults to 1. - - o a or A - Number of digits to appear after the decimal - point. If no precision is given, the - precision defaults to the minimum needed for - an exact representation. - - o e, E, f or F - Number of digits to appear after the decimal - point. If no precision is given, the - precision defaults to 6. - - o g or G - Maximum number of significant digits. A - precision of 0 is treated the same as a - precision of 1. If no precision is given, the - precision defaults to 6. - - o s or S - Maximum number of characters to print from the - string. If no precision is given, the entire - string is printed. - - o all others - undefined. - - o- - - o <[size]> - - <[size]> is an optional modifier that changes the data - type that the corresponding argument has. Behavior is - unspecified if a size is given that does not match the - <[type]>. - - o+ - o hh - With <<d>>, <<i>>, <<o>>, <<u>>, <<x>>, or - <<X>>, specifies that the argument should be - converted to a <<signed char>> or <<unsigned - char>> before printing. - - With <<n>>, specifies that the argument is a - pointer to a <<signed char>>. - - o h - With <<d>>, <<i>>, <<o>>, <<u>>, <<x>>, or - <<X>>, specifies that the argument should be - converted to a <<short>> or <<unsigned short>> - before printing. - - With <<n>>, specifies that the argument is a - pointer to a <<short>>. - - o l - With <<d>>, <<i>>, <<o>>, <<u>>, <<x>>, or - <<X>>, specifies that the argument is a - <<long>> or <<unsigned long>>. - - With <<c>>, specifies that the argument has - type <<wint_t>>. - - With <<s>>, specifies that the argument is a - pointer to <<wchar_t>>. - - With <<n>>, specifies that the argument is a - pointer to a <<long>>. - - With <<a>>, <<A>>, <<e>>, <<E>>, <<f>>, <<F>>, - <<g>>, or <<G>>, has no effect (because of - vararg promotion rules, there is no need to - distinguish between <<float>> and <<double>>). - - o ll - With <<d>>, <<i>>, <<o>>, <<u>>, <<x>>, or - <<X>>, specifies that the argument is a - <<long long>> or <<unsigned long long>>. - - With <<n>>, specifies that the argument is a - pointer to a <<long long>>. - - o j - With <<d>>, <<i>>, <<o>>, <<u>>, <<x>>, or - <<X>>, specifies that the argument is an - <<intmax_t>> or <<uintmax_t>>. - - With <<n>>, specifies that the argument is a - pointer to an <<intmax_t>>. - - o z - With <<d>>, <<i>>, <<o>>, <<u>>, <<x>>, or - <<X>>, specifies that the argument is a - <<ssize_t>> or <<size_t>>. - - With <<n>>, specifies that the argument is a - pointer to a <<ssize_t>>. - - o t - With <<d>>, <<i>>, <<o>>, <<u>>, <<x>>, or - <<X>>, specifies that the argument is a - <<ptrdiff_t>>. - - With <<n>>, specifies that the argument is a - pointer to a <<ptrdiff_t>>. - - o L - With <<a>>, <<A>>, <<e>>, <<E>>, <<f>>, <<F>>, - <<g>>, or <<G>>, specifies that the argument - is a <<long double>>. - - o- - - o <[type]> - - <[type]> specifies what kind of conversion <<printf>> - performs. Here is a table of these: - - o+ - o % - Prints the percent character (<<%>>). - - o c - Prints <[arg]> as single character. If the - <<l>> size specifier is in effect, a multibyte - character is printed. - - o C - Short for <<%lc>>. - - o s - Prints the elements of a pointer to <<char>> - until the precision or a null character is - reached. If the <<l>> size specifier is in - effect, the pointer is to an array of - <<wchar_t>>, and the string is converted to - multibyte characters before printing. - - o S - Short for <<%ls>>. - - o d or i - Prints a signed decimal integer; takes an - <<int>>. Leading zeros are inserted as - necessary to reach the precision. A precision - of 0 produces an empty string. - - o D - Newlib extension, short for <<%ld>>. - - o o - Prints an unsigned octal integer; takes an - <<unsigned>>. Leading zeros are inserted as - necessary to reach the precision. A precision - of 0 produces an empty string. - - o O - Newlib extension, short for <<%lo>>. - - o u - Prints an unsigned decimal integer; takes an - <<unsigned>>. Leading zeros are inserted as - necessary to reach the precision. A precision - of 0 produces an empty string. - - o U - Newlib extension, short for <<%lu>>. - - o x - Prints an unsigned hexadecimal integer (using - <<abcdef>> as digits beyond <<9>>); takes an - <<unsigned>>. Leading zeros are inserted as - necessary to reach the precision. A precision - of 0 produces an empty string. - - o X - Like <<x>>, but uses <<ABCDEF>> as digits - beyond <<9>>. - - o f - Prints a signed value of the form - <<[-]9999.9999>>, with the precision - determining how many digits follow the decimal - point; takes a <<double>> (remember that - <<float>> promotes to <<double>> as a vararg). - The low order digit is rounded to even. If - the precision results in at most DECIMAL_DIG - digits, the result is rounded correctly; if - more than DECIMAL_DIG digits are printed, the - result is only guaranteed to round back to the - original value. - - If the value is infinite, the result is - <<inf>>, and no zero padding is performed. If - the value is not a number, the result is - <<nan>>, and no zero padding is performed. - - o F - Like <<f>>, but uses <<INF>> and <<NAN>> for - non-finite numbers. - - o e - Prints a signed value of the form - <<[-]9.9999e[+|-]999>>; takes a <<double>>. - The digit before the decimal point is non-zero - if the value is non-zero. The precision - determines how many digits appear between - <<.>> and <<e>>, and the exponent always - contains at least two digits. The value zero - has an exponent of zero. If the value is not - finite, it is printed like <<f>>. - - o E - Like <<e>>, but using <<E>> to introduce the - exponent, and like <<F>> for non-finite - values. - - o g - Prints a signed value in either <<f>> or <<e>> - form, based on the given value and - precision---an exponent less than -4 or - greater than the precision selects the <<e>> - form. Trailing zeros and the decimal point - are printed only if necessary; takes a - <<double>>. - - o G - Like <<g>>, except use <<F>> or <<E>> form. - - o a - Prints a signed value of the form - <<[-]0x1.ffffp[+|-]9>>; takes a <<double>>. - The letters <<abcdef>> are used for digits - beyond <<9>>. The precision determines how - many digits appear after the decimal point. - The exponent contains at least one digit, and - is a decimal value representing the power of - 2; a value of 0 has an exponent of 0. - Non-finite values are printed like <<f>>. - - o A - Like <<a>>, except uses <<X>>, <<P>>, and - <<ABCDEF>> instead of lower case. - - o n - Takes a pointer to <<int>>, and stores a count - of the number of bytes written so far. No - output is created. - - o p - Takes a pointer to <<void>>, and prints it in - an implementation-defined format. This - implementation is similar to <<%#tx>>), except - that <<0x>> appears even for the NULL pointer. - - o- - O- - - <<_printf_r>>, <<_fprintf_r>>, <<_asprintf_r>>, - <<_sprintf_r>>, <<_snprintf_r>>, <<_asnprintf_r>> are simply - reentrant versions of the functions above. - -RETURNS -On success, <<sprintf>> and <<asprintf>> return the number of bytes in -the output string, except the concluding <<NUL>> is not counted. -<<snprintf>> returns the number of bytes that would be in the output -string, except the concluding <<NUL>> is not counted. <<printf>> and -<<fprintf>> return the number of characters transmitted. -<<asnprintf>> returns the original <[str]> if there was enough room, -otherwise it returns an allocated string. - -If an error occurs, the result of <<printf>>, <<fprintf>>, -<<snprintf>>, and <<asprintf>> is a negative value, and the result of -<<asnprintf>> is NULL. No error returns occur for <<sprintf>>. For -<<printf>> and <<fprintf>>, <<errno>> may be set according to -<<fputc>>. For <<asprintf>> and <<asnprintf>>, <<errno>> may be set -to ENOMEM if allocation fails, and for <<snprintf>>, <<errno>> may be -set to EOVERFLOW if <[size]> or the output length exceeds INT_MAX. - -PORTABILITY -ANSI C requires <<printf>>, <<fprintf>>, <<sprintf>>, and -<<snprintf>>. <<asprintf>> and <<asnprintf>> are newlib extensions. - -The ANSI C standard specifies that implementations must support at -least formatted output of up to 509 characters. This implementation -has no inherent limit. - -Depending on how newlib was configured, not all format specifiers are -supported. - -Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, -<<lseek>>, <<read>>, <<sbrk>>, <<write>>. -*/ - -#include <_ansi.h> -#include <reent.h> -#include <stdio.h> -#ifdef _HAVE_STDC -#include <stdarg.h> -#else -#include <varargs.h> -#endif -#include <limits.h> -#include "local.h" - -int -#ifdef _HAVE_STDC -_DEFUN(_sprintf_r, (ptr, str, fmt), - struct _reent *ptr _AND - char *str _AND - _CONST char *fmt _DOTS) -#else -_sprintf_r(ptr, str, fmt, va_alist) - struct _reent *ptr; - char *str; - _CONST char *fmt; - va_dcl -#endif -{ - int ret; - va_list ap; - FILE f; - - f._flags = __SWR | __SSTR; - f._bf._base = f._p = (unsigned char *) str; - f._bf._size = f._w = INT_MAX; - f._file = -1; /* No file. */ -#ifdef _HAVE_STDC - va_start (ap, fmt); -#else - va_start (ap); -#endif - ret = _svfprintf_r (ptr, &f, fmt, ap); - va_end (ap); - *f._p = 0; - return (ret); -} - -#ifndef _REENT_ONLY - -int -#ifdef _HAVE_STDC -_DEFUN(sprintf, (str, fmt), - char *str _AND - _CONST char *fmt _DOTS) -#else -sprintf(str, fmt, va_alist) - char *str; - _CONST char *fmt; - va_dcl -#endif -{ - int ret; - va_list ap; - FILE f; - - f._flags = __SWR | __SSTR; - f._bf._base = f._p = (unsigned char *) str; - f._bf._size = f._w = INT_MAX; - f._file = -1; /* No file. */ -#ifdef _HAVE_STDC - va_start (ap, fmt); -#else - va_start (ap); -#endif - ret = _svfprintf_r (_REENT, &f, fmt, ap); - va_end (ap); - *f._p = 0; - return (ret); -} - -#endif |