| 0,0 → 1,891 |
|---|
| /* |
| * Copyright (c) 2001-2004 Jakub Jermar |
| * Copyright (c) 2006 Josef Cejka |
| * Copyright (c) 2009 Martin Decky |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup generic |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief Printing functions. |
| */ |
| |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <io/printf_core.h> |
| #include <ctype.h> |
| #include <string.h> |
| |
| /** show prefixes 0x or 0 */ |
| #define __PRINTF_FLAG_PREFIX 0x00000001 |
| /** signed / unsigned number */ |
| #define __PRINTF_FLAG_SIGNED 0x00000002 |
| /** print leading zeroes */ |
| #define __PRINTF_FLAG_ZEROPADDED 0x00000004 |
| /** align to left */ |
| #define __PRINTF_FLAG_LEFTALIGNED 0x00000010 |
| /** always show + sign */ |
| #define __PRINTF_FLAG_SHOWPLUS 0x00000020 |
| /** print space instead of plus */ |
| #define __PRINTF_FLAG_SPACESIGN 0x00000040 |
| /** show big characters */ |
| #define __PRINTF_FLAG_BIGCHARS 0x00000080 |
| /** number has - sign */ |
| #define __PRINTF_FLAG_NEGATIVE 0x00000100 |
| |
| /** |
| * Buffer big enough for 64-bit number printed in base 2, sign, prefix and 0 |
| * to terminate string... (last one is only for better testing end of buffer by |
| * zero-filling subroutine) |
| */ |
| #define PRINT_NUMBER_BUFFER_SIZE (64 + 5) |
| |
| /** Enumeration of possible arguments types. |
| */ |
| typedef enum { |
| PrintfQualifierByte = 0, |
| PrintfQualifierShort, |
| PrintfQualifierInt, |
| PrintfQualifierLong, |
| PrintfQualifierLongLong, |
| PrintfQualifierPointer |
| } qualifier_t; |
| |
| static char nullstr[] = "(NULL)"; |
| static char digits_small[] = "0123456789abcdef"; |
| static char digits_big[] = "0123456789ABCDEF"; |
| static char invalch = U_SPECIAL; |
| |
| /** Print one or more characters without adding newline. |
| * |
| * @param buf Buffer holding characters with size of |
| * at least size bytes. NULL is not allowed! |
| * @param size Size of the buffer in bytes. |
| * @param ps Output method and its data. |
| * |
| * @return Number of characters printed. |
| * |
| */ |
| static int printf_putnchars(const char *buf, size_t size, |
| printf_spec_t *ps) |
| { |
| return ps->str_write((void *) buf, size, ps->data); |
| } |
| |
| /** Print one or more wide characters without adding newline. |
| * |
| * @param buf Buffer holding wide characters with size of |
| * at least size bytes. NULL is not allowed! |
| * @param size Size of the buffer in bytes. |
| * @param ps Output method and its data. |
| * |
| * @return Number of wide characters printed. |
| * |
| */ |
| static int printf_wputnchars(const wchar_t *buf, size_t size, |
| printf_spec_t *ps) |
| { |
| return ps->wstr_write((void *) buf, size, ps->data); |
| } |
| |
| /** Print string without adding a newline. |
| * |
| * @param str String to print. |
| * @param ps Write function specification and support data. |
| * |
| * @return Number of characters printed. |
| * |
| */ |
| static int printf_putstr(const char *str, printf_spec_t *ps) |
| { |
| if (str == NULL) |
| return printf_putnchars(nullstr, str_size(nullstr), ps); |
| |
| return ps->str_write((void *) str, str_size(str), ps->data); |
| } |
| |
| /** Print one ASCII character. |
| * |
| * @param c ASCII character to be printed. |
| * @param ps Output method. |
| * |
| * @return Number of characters printed. |
| * |
| */ |
| static int printf_putchar(const char ch, printf_spec_t *ps) |
| { |
| if (!ascii_check(ch)) |
| return ps->str_write((void *) &invalch, 1, ps->data); |
| |
| return ps->str_write(&ch, 1, ps->data); |
| } |
| |
| /** Print one wide character. |
| * |
| * @param c Wide character to be printed. |
| * @param ps Output method. |
| * |
| * @return Number of characters printed. |
| * |
| */ |
| static int printf_putwchar(const wchar_t ch, printf_spec_t *ps) |
| { |
| if (!chr_check(ch)) |
| return ps->str_write((void *) &invalch, 1, ps->data); |
| |
| return ps->wstr_write(&ch, sizeof(wchar_t), ps->data); |
| } |
| |
| /** Print one formatted ASCII character. |
| * |
| * @param ch Character to print. |
| * @param width Width modifier. |
| * @param flags Flags that change the way the character is printed. |
| * |
| * @return Number of characters printed, negative value on failure. |
| * |
| */ |
| static int print_char(const char ch, int width, uint32_t flags, printf_spec_t *ps) |
| { |
| size_t counter = 0; |
| if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) { |
| while (--width > 0) { |
| /* |
| * One space is consumed by the character itself, hence |
| * the predecrement. |
| */ |
| if (printf_putchar(' ', ps) > 0) |
| counter++; |
| } |
| } |
| |
| if (printf_putchar(ch, ps) > 0) |
| counter++; |
| |
| while (--width > 0) { |
| /* |
| * One space is consumed by the character itself, hence |
| * the predecrement. |
| */ |
| if (printf_putchar(' ', ps) > 0) |
| counter++; |
| } |
| |
| return (int) (counter + 1); |
| } |
| |
| /** Print one formatted wide character. |
| * |
| * @param ch Character to print. |
| * @param width Width modifier. |
| * @param flags Flags that change the way the character is printed. |
| * |
| * @return Number of characters printed, negative value on failure. |
| * |
| */ |
| static int print_wchar(const wchar_t ch, int width, uint32_t flags, printf_spec_t *ps) |
| { |
| size_t counter = 0; |
| if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) { |
| while (--width > 0) { |
| /* |
| * One space is consumed by the character itself, hence |
| * the predecrement. |
| */ |
| if (printf_putchar(' ', ps) > 0) |
| counter++; |
| } |
| } |
| |
| if (printf_putwchar(ch, ps) > 0) |
| counter++; |
| |
| while (--width > 0) { |
| /* |
| * One space is consumed by the character itself, hence |
| * the predecrement. |
| */ |
| if (printf_putchar(' ', ps) > 0) |
| counter++; |
| } |
| |
| return (int) (counter + 1); |
| } |
| |
| /** Print string. |
| * |
| * @param str String to be printed. |
| * @param width Width modifier. |
| * @param precision Precision modifier. |
| * @param flags Flags that modify the way the string is printed. |
| * |
| * @return Number of characters printed, negative value on failure. |
| */ |
| static int print_str(char *str, int width, unsigned int precision, |
| uint32_t flags, printf_spec_t *ps) |
| { |
| if (str == NULL) |
| return printf_putstr(nullstr, ps); |
| |
| /* Print leading spaces. */ |
| size_t strw = str_length(str); |
| if (precision == 0) |
| precision = strw; |
| |
| /* Left padding */ |
| size_t counter = 0; |
| width -= precision; |
| if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) { |
| while (width-- > 0) { |
| if (printf_putchar(' ', ps) == 1) |
| counter++; |
| } |
| } |
| |
| /* Part of @a str fitting into the alloted space. */ |
| int retval; |
| size_t size = str_lsize(str, precision); |
| if ((retval = printf_putnchars(str, size, ps)) < 0) |
| return -counter; |
| |
| counter += retval; |
| |
| /* Right padding */ |
| while (width-- > 0) { |
| if (printf_putchar(' ', ps) == 1) |
| counter++; |
| } |
| |
| return ((int) counter); |
| |
| } |
| |
| /** Print wide string. |
| * |
| * @param str Wide string to be printed. |
| * @param width Width modifier. |
| * @param precision Precision modifier. |
| * @param flags Flags that modify the way the string is printed. |
| * |
| * @return Number of wide characters printed, negative value on failure. |
| */ |
| static int print_wstr(wchar_t *str, int width, unsigned int precision, |
| uint32_t flags, printf_spec_t *ps) |
| { |
| if (str == NULL) |
| return printf_putstr(nullstr, ps); |
| |
| /* Print leading spaces. */ |
| size_t strw = wstr_length(str); |
| if (precision == 0) |
| precision = strw; |
| |
| /* Left padding */ |
| size_t counter = 0; |
| width -= precision; |
| if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) { |
| while (width-- > 0) { |
| if (printf_putchar(' ', ps) == 1) |
| counter++; |
| } |
| } |
| |
| /* Part of @a wstr fitting into the alloted space. */ |
| int retval; |
| size_t size = wstr_lsize(str, precision); |
| if ((retval = printf_wputnchars(str, size, ps)) < 0) |
| return -counter; |
| |
| counter += retval; |
| |
| /* Right padding */ |
| while (width-- > 0) { |
| if (printf_putchar(' ', ps) == 1) |
| counter++; |
| } |
| |
| return ((int) counter); |
| } |
| |
| /** Print a number in a given base. |
| * |
| * Print significant digits of a number in given base. |
| * |
| * @param num Number to print. |
| * @param width Width modifier. |
| * @param precision Precision modifier. |
| * @param base Base to print the number in (must be between 2 and 16). |
| * @param flags Flags that modify the way the number is printed. |
| * |
| * @return Number of characters printed. |
| * |
| */ |
| static int print_number(uint64_t num, int width, int precision, int base, |
| uint32_t flags, printf_spec_t *ps) |
| { |
| char *digits; |
| if (flags & __PRINTF_FLAG_BIGCHARS) |
| digits = digits_big; |
| else |
| digits = digits_small; |
| |
| char data[PRINT_NUMBER_BUFFER_SIZE]; |
| char *ptr = &data[PRINT_NUMBER_BUFFER_SIZE - 1]; |
| |
| /* Size of number with all prefixes and signs */ |
| int size = 0; |
| |
| /* Put zero at end of string */ |
| *ptr-- = 0; |
| |
| if (num == 0) { |
| *ptr-- = '0'; |
| size++; |
| } else { |
| do { |
| *ptr-- = digits[num % base]; |
| size++; |
| } while (num /= base); |
| } |
| |
| /* Size of plain number */ |
| int number_size = size; |
| |
| /* |
| * Collect the sum of all prefixes/signs/etc. to calculate padding and |
| * leading zeroes. |
| */ |
| if (flags & __PRINTF_FLAG_PREFIX) { |
| switch(base) { |
| case 2: |
| /* Binary formating is not standard, but usefull */ |
| size += 2; |
| break; |
| case 8: |
| size++; |
| break; |
| case 16: |
| size += 2; |
| break; |
| } |
| } |
| |
| char sgn = 0; |
| if (flags & __PRINTF_FLAG_SIGNED) { |
| if (flags & __PRINTF_FLAG_NEGATIVE) { |
| sgn = '-'; |
| size++; |
| } else if (flags & __PRINTF_FLAG_SHOWPLUS) { |
| sgn = '+'; |
| size++; |
| } else if (flags & __PRINTF_FLAG_SPACESIGN) { |
| sgn = ' '; |
| size++; |
| } |
| } |
| |
| if (flags & __PRINTF_FLAG_LEFTALIGNED) |
| flags &= ~__PRINTF_FLAG_ZEROPADDED; |
| |
| /* |
| * If the number is left-aligned or precision is specified then |
| * padding with zeros is ignored. |
| */ |
| if (flags & __PRINTF_FLAG_ZEROPADDED) { |
| if ((precision == 0) && (width > size)) |
| precision = width - size + number_size; |
| } |
| |
| /* Print leading spaces */ |
| if (number_size > precision) { |
| /* Print the whole number, not only a part */ |
| precision = number_size; |
| } |
| |
| width -= precision + size - number_size; |
| size_t counter = 0; |
| |
| if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) { |
| while (width-- > 0) { |
| if (printf_putchar(' ', ps) == 1) |
| counter++; |
| } |
| } |
| |
| /* Print sign */ |
| if (sgn) { |
| if (printf_putchar(sgn, ps) == 1) |
| counter++; |
| } |
| |
| /* Print prefix */ |
| if (flags & __PRINTF_FLAG_PREFIX) { |
| switch(base) { |
| case 2: |
| /* Binary formating is not standard, but usefull */ |
| if (printf_putchar('0', ps) == 1) |
| counter++; |
| if (flags & __PRINTF_FLAG_BIGCHARS) { |
| if (printf_putchar('B', ps) == 1) |
| counter++; |
| } else { |
| if (printf_putchar('b', ps) == 1) |
| counter++; |
| } |
| break; |
| case 8: |
| if (printf_putchar('o', ps) == 1) |
| counter++; |
| break; |
| case 16: |
| if (printf_putchar('0', ps) == 1) |
| counter++; |
| if (flags & __PRINTF_FLAG_BIGCHARS) { |
| if (printf_putchar('X', ps) == 1) |
| counter++; |
| } else { |
| if (printf_putchar('x', ps) == 1) |
| counter++; |
| } |
| break; |
| } |
| } |
| |
| /* Print leading zeroes */ |
| precision -= number_size; |
| while (precision-- > 0) { |
| if (printf_putchar('0', ps) == 1) |
| counter++; |
| } |
| |
| /* Print the number itself */ |
| int retval; |
| if ((retval = printf_putstr(++ptr, ps)) > 0) |
| counter += retval; |
| |
| /* Print tailing spaces */ |
| |
| while (width-- > 0) { |
| if (printf_putchar(' ', ps) == 1) |
| counter++; |
| } |
| |
| return ((int) counter); |
| } |
| |
| /** Print formatted string. |
| * |
| * Print string formatted according to the fmt parameter and variadic arguments. |
| * Each formatting directive must have the following form: |
| * |
| * \% [ FLAGS ] [ WIDTH ] [ .PRECISION ] [ TYPE ] CONVERSION |
| * |
| * FLAGS:@n |
| * - "#" Force to print prefix. For \%o conversion, the prefix is 0, for |
| * \%x and \%X prefixes are 0x and 0X and for conversion \%b the |
| * prefix is 0b. |
| * |
| * - "-" Align to left. |
| * |
| * - "+" Print positive sign just as negative. |
| * |
| * - " " If the printed number is positive and "+" flag is not set, |
| * print space in place of sign. |
| * |
| * - "0" Print 0 as padding instead of spaces. Zeroes are placed between |
| * sign and the rest of the number. This flag is ignored if "-" |
| * flag is specified. |
| * |
| * WIDTH:@n |
| * - Specify the minimal width of a printed argument. If it is bigger, |
| * width is ignored. If width is specified with a "*" character instead of |
| * number, width is taken from parameter list. And integer parameter is |
| * expected before parameter for processed conversion specification. If |
| * this value is negative its absolute value is taken and the "-" flag is |
| * set. |
| * |
| * PRECISION:@n |
| * - Value precision. For numbers it specifies minimum valid numbers. |
| * Smaller numbers are printed with leading zeroes. Bigger numbers are not |
| * affected. Strings with more than precision characters are cut off. Just |
| * as with width, an "*" can be used used instead of a number. An integer |
| * value is then expected in parameters. When both width and precision are |
| * specified using "*", the first parameter is used for width and the |
| * second one for precision. |
| * |
| * TYPE:@n |
| * - "hh" Signed or unsigned char.@n |
| * - "h" Signed or unsigned short.@n |
| * - "" Signed or unsigned int (default value).@n |
| * - "l" Signed or unsigned long int.@n |
| * If conversion is "c", the character is wchar_t (wide character).@n |
| * If conversion is "s", the string is wchar_t * (wide string).@n |
| * - "ll" Signed or unsigned long long int.@n |
| * |
| * CONVERSION:@n |
| * - % Print percentile character itself. |
| * |
| * - c Print single character. The character is expected to be plain |
| * ASCII (e.g. only values 0 .. 127 are valid).@n |
| * If type is "l", then the character is expected to be wide character |
| * (e.g. values 0 .. 0x10ffff are valid). |
| * |
| * - s Print zero terminated string. If a NULL value is passed as |
| * value, "(NULL)" is printed instead.@n |
| * If type is "l", then the string is expected to be wide string. |
| * |
| * - P, p Print value of a pointer. Void * value is expected and it is |
| * printed in hexadecimal notation with prefix (as with \%#X / \%#x |
| * for 32-bit or \%#X / \%#x for 64-bit long pointers). |
| * |
| * - b Print value as unsigned binary number. Prefix is not printed by |
| * default. (Nonstandard extension.) |
| * |
| * - o Print value as unsigned octal number. Prefix is not printed by |
| * default. |
| * |
| * - d, i Print signed decimal number. There is no difference between d |
| * and i conversion. |
| * |
| * - u Print unsigned decimal number. |
| * |
| * - X, x Print hexadecimal number with upper- or lower-case. Prefix is |
| * not printed by default. |
| * |
| * All other characters from fmt except the formatting directives are printed |
| * verbatim. |
| * |
| * @param fmt Format NULL-terminated string. |
| * |
| * @return Number of characters printed, negative value on failure. |
| * |
| */ |
| int printf_core(const char *fmt, printf_spec_t *ps, va_list ap) |
| { |
| size_t i; /* Index of the currently processed character from fmt */ |
| size_t nxt = 0; /* Index of the next character from fmt */ |
| size_t j = 0; /* Index to the first not printed nonformating character */ |
| |
| size_t counter = 0; /* Number of characters printed */ |
| int retval; /* Return values from nested functions */ |
| |
| while (true) { |
| i = nxt; |
| wchar_t uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| |
| if (uc == 0) |
| break; |
| |
| /* Control character */ |
| if (uc == '%') { |
| /* Print common characters if any processed */ |
| if (i > j) { |
| if ((retval = printf_putnchars(&fmt[j], i - j, ps)) < 0) { |
| /* Error */ |
| counter = -counter; |
| goto out; |
| } |
| counter += retval; |
| } |
| |
| j = i; |
| |
| /* Parse modifiers */ |
| uint32_t flags = 0; |
| bool end = false; |
| |
| do { |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| switch (uc) { |
| case '#': |
| flags |= __PRINTF_FLAG_PREFIX; |
| break; |
| case '-': |
| flags |= __PRINTF_FLAG_LEFTALIGNED; |
| break; |
| case '+': |
| flags |= __PRINTF_FLAG_SHOWPLUS; |
| break; |
| case ' ': |
| flags |= __PRINTF_FLAG_SPACESIGN; |
| break; |
| case '0': |
| flags |= __PRINTF_FLAG_ZEROPADDED; |
| break; |
| default: |
| end = true; |
| }; |
| } while (!end); |
| |
| /* Width & '*' operator */ |
| int width = 0; |
| if (isdigit(uc)) { |
| while (true) { |
| width *= 10; |
| width += uc - '0'; |
| |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| if (uc == 0) |
| break; |
| if (!isdigit(uc)) |
| break; |
| } |
| } else if (uc == '*') { |
| /* Get width value from argument list */ |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| width = (int) va_arg(ap, int); |
| if (width < 0) { |
| /* Negative width sets '-' flag */ |
| width *= -1; |
| flags |= __PRINTF_FLAG_LEFTALIGNED; |
| } |
| } |
| |
| /* Precision and '*' operator */ |
| int precision = 0; |
| if (uc == '.') { |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| if (isdigit(uc)) { |
| while (true) { |
| precision *= 10; |
| precision += uc - '0'; |
| |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| if (uc == 0) |
| break; |
| if (!isdigit(uc)) |
| break; |
| } |
| } else if (uc == '*') { |
| /* Get precision value from the argument list */ |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| precision = (int) va_arg(ap, int); |
| if (precision < 0) { |
| /* Ignore negative precision */ |
| precision = 0; |
| } |
| } |
| } |
| |
| qualifier_t qualifier; |
| |
| switch (uc) { |
| /** @todo Unimplemented qualifiers: |
| * t ptrdiff_t - ISO C 99 |
| */ |
| case 'h': |
| /* Char or short */ |
| qualifier = PrintfQualifierShort; |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| if (uc == 'h') { |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| qualifier = PrintfQualifierByte; |
| } |
| break; |
| case 'l': |
| /* Long or long long */ |
| qualifier = PrintfQualifierLong; |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| if (uc == 'l') { |
| i = nxt; |
| uc = str_decode(fmt, &nxt, STR_NO_LIMIT); |
| qualifier = PrintfQualifierLongLong; |
| } |
| break; |
| default: |
| /* Default type */ |
| qualifier = PrintfQualifierInt; |
| } |
| |
| unsigned int base = 10; |
| |
| switch (uc) { |
| /* |
| * String and character conversions. |
| */ |
| case 's': |
| if (qualifier == PrintfQualifierLong) |
| retval = print_wstr(va_arg(ap, wchar_t *), width, precision, flags, ps); |
| else |
| retval = print_str(va_arg(ap, char *), width, precision, flags, ps); |
| |
| if (retval < 0) { |
| counter = -counter; |
| goto out; |
| } |
| |
| counter += retval; |
| j = nxt; |
| goto next_char; |
| case 'c': |
| if (qualifier == PrintfQualifierLong) |
| retval = print_wchar(va_arg(ap, wchar_t), width, flags, ps); |
| else |
| retval = print_char(va_arg(ap, unsigned int), width, flags, ps); |
| |
| if (retval < 0) { |
| counter = -counter; |
| goto out; |
| }; |
| |
| counter += retval; |
| j = nxt; |
| goto next_char; |
| |
| /* |
| * Integer values |
| */ |
| case 'P': |
| /* Pointer */ |
| flags |= __PRINTF_FLAG_BIGCHARS; |
| case 'p': |
| flags |= __PRINTF_FLAG_PREFIX; |
| base = 16; |
| qualifier = PrintfQualifierPointer; |
| break; |
| case 'b': |
| base = 2; |
| break; |
| case 'o': |
| base = 8; |
| break; |
| case 'd': |
| case 'i': |
| flags |= __PRINTF_FLAG_SIGNED; |
| case 'u': |
| break; |
| case 'X': |
| flags |= __PRINTF_FLAG_BIGCHARS; |
| case 'x': |
| base = 16; |
| break; |
| |
| /* Percentile itself */ |
| case '%': |
| j = i; |
| goto next_char; |
| |
| /* |
| * Bad formatting. |
| */ |
| default: |
| /* |
| * Unknown format. Now, j is the index of '%' |
| * so we will print whole bad format sequence. |
| */ |
| goto next_char; |
| } |
| |
| /* Print integers */ |
| size_t size; |
| uint64_t number; |
| switch (qualifier) { |
| case PrintfQualifierByte: |
| size = sizeof(unsigned char); |
| number = (uint64_t) va_arg(ap, unsigned int); |
| break; |
| case PrintfQualifierShort: |
| size = sizeof(unsigned short); |
| number = (uint64_t) va_arg(ap, unsigned int); |
| break; |
| case PrintfQualifierInt: |
| size = sizeof(unsigned int); |
| number = (uint64_t) va_arg(ap, unsigned int); |
| break; |
| case PrintfQualifierLong: |
| size = sizeof(unsigned long); |
| number = (uint64_t) va_arg(ap, unsigned long); |
| break; |
| case PrintfQualifierLongLong: |
| size = sizeof(unsigned long long); |
| number = (uint64_t) va_arg(ap, unsigned long long); |
| break; |
| case PrintfQualifierPointer: |
| size = sizeof(void *); |
| number = (uint64_t) (unsigned long) va_arg(ap, void *); |
| break; |
| default: |
| /* Unknown qualifier */ |
| counter = -counter; |
| goto out; |
| } |
| |
| if (flags & __PRINTF_FLAG_SIGNED) { |
| if (number & (0x1 << (size * 8 - 1))) { |
| flags |= __PRINTF_FLAG_NEGATIVE; |
| |
| if (size == sizeof(uint64_t)) { |
| number = -((int64_t) number); |
| } else { |
| number = ~number; |
| number &= |
| ~(0xFFFFFFFFFFFFFFFFll << |
| (size * 8)); |
| number++; |
| } |
| } |
| } |
| |
| if ((retval = print_number(number, width, precision, |
| base, flags, ps)) < 0) { |
| counter = -counter; |
| goto out; |
| } |
| |
| counter += retval; |
| j = nxt; |
| } |
| next_char: |
| ; |
| } |
| |
| if (i > j) { |
| if ((retval = printf_putnchars(&fmt[j], i - j, ps)) < 0) { |
| /* Error */ |
| counter = -counter; |
| goto out; |
| } |
| counter += retval; |
| } |
| |
| out: |
| return ((int) counter); |
| } |
| |
| /** @} |
| */ |