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  1. /*
  2.  * Copyright (c) 2001-2004 Jakub Jermar
  3.  * Copyright (c) 2006 Josef Cejka
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. /** @addtogroup libc
  31.  * @{
  32.  */
  33. /**
  34.  * @file
  35.  * @brief   Printing functions.
  36.  */
  37.  
  38. #include <unistd.h>
  39. #include <stdio.h>
  40. #include <io/printf_core.h>
  41. #include <ctype.h>
  42. #include <string.h>
  43. #include <async.h>  /* for pseudo thread serialization */
  44.  
  45. #define __PRINTF_FLAG_PREFIX        0x00000001  /**< show prefixes 0x or 0*/
  46. #define __PRINTF_FLAG_SIGNED        0x00000002  /**< signed / unsigned number */
  47. #define __PRINTF_FLAG_ZEROPADDED    0x00000004  /**< print leading zeroes */
  48. #define __PRINTF_FLAG_LEFTALIGNED   0x00000010  /**< align to left */
  49. #define __PRINTF_FLAG_SHOWPLUS      0x00000020  /**< always show + sign */
  50. #define __PRINTF_FLAG_SPACESIGN     0x00000040  /**< print space instead of plus */
  51. #define __PRINTF_FLAG_BIGCHARS      0x00000080  /**< show big characters */
  52. #define __PRINTF_FLAG_NEGATIVE      0x00000100  /**< number has - sign */
  53.  
  54. #define PRINT_NUMBER_BUFFER_SIZE    (64+5)      /**< Buffer big enought for 64 bit number
  55.                              * printed in base 2, sign, prefix and
  56.                              * 0 to terminate string.. (last one is only for better testing
  57.                              * end of buffer by zero-filling subroutine)
  58.                              */
  59. /** Enumeration of possible arguments types.
  60.  */
  61. typedef enum {
  62.     PrintfQualifierByte = 0,
  63.     PrintfQualifierShort,
  64.     PrintfQualifierInt,
  65.     PrintfQualifierLong,
  66.     PrintfQualifierLongLong,
  67.     PrintfQualifierSizeT,
  68.     PrintfQualifierPointer
  69. } qualifier_t;
  70.  
  71. static char digits_small[] = "0123456789abcdef";    /**< Small hexadecimal characters */
  72. static char digits_big[] = "0123456789ABCDEF";      /**< Big hexadecimal characters */
  73.  
  74. /** Print count chars from buffer without adding newline
  75.  * @param buf Buffer with size at least count bytes - NULL pointer NOT allowed!
  76.  * @param count
  77.  * @param ps output method and its data
  78.  * @return number of printed characters
  79.  */
  80. static int printf_putnchars(const char * buf, size_t count, struct printf_spec *ps)
  81. {
  82.     return ps->write((void *)buf, count, ps->data);
  83. }
  84.  
  85. /** Print string without added newline
  86.  * @param str string to print
  87.  * @param ps write function specification and support data
  88.  * @return number of printed characters
  89.  */
  90. static int printf_putstr(const char * str, struct printf_spec *ps)
  91. {
  92.     size_t count;
  93.    
  94.     if (str == NULL)
  95.         return printf_putnchars("(NULL)", 6, ps);
  96.  
  97.     for (count = 0; str[count] != 0; count++);
  98.  
  99.     if (ps->write((void *) str, count, ps->data) == count)
  100.         return 0;
  101.    
  102.     return EOF;
  103. }
  104.  
  105. /** Print one character to output
  106.  * @param c one character
  107.  * @param ps output method
  108.  * @return number of printed characters
  109.  */
  110. static int printf_putchar(int c, struct printf_spec *ps)
  111. {
  112.     unsigned char ch = c;
  113.    
  114.     return ps->write((void *) &ch, 1, ps->data);
  115. }
  116.  
  117. /** Print one formatted character
  118.  * @param c character to print
  119.  * @param width
  120.  * @param flags
  121.  * @return number of printed characters
  122.  */
  123. static int print_char(char c, int width, uint64_t flags, struct printf_spec *ps)
  124. {
  125.     int counter = 0;
  126.    
  127.     if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
  128.         while (--width > 0) {   /* one space is consumed by character itself hence predecrement */
  129.             if (printf_putchar(' ', ps) > 0)   
  130.                 ++counter;
  131.         }
  132.     }
  133.    
  134.     if (printf_putchar(c, ps) > 0)
  135.         counter++;
  136.    
  137.     while (--width > 0) { /* one space is consumed by character itself hence predecrement */
  138.         if (printf_putchar(' ', ps) > 0)
  139.             ++counter;
  140.     }
  141.    
  142.     return ++counter;
  143. }
  144.  
  145. /** Print one string
  146.  * @param s string
  147.  * @param width
  148.  * @param precision
  149.  * @param flags
  150.  * @return number of printed characters
  151.  */
  152.                        
  153. static int print_string(char *s, int width, int precision, uint64_t flags, struct printf_spec *ps)
  154. {
  155.     int counter = 0;
  156.     size_t size;
  157.     int retval;
  158.  
  159.     if (s == NULL) {
  160.         return printf_putstr("(NULL)", ps);
  161.     }
  162.    
  163.     size = strlen(s);
  164.  
  165.     /* print leading spaces */
  166.  
  167.     if (precision == 0)
  168.         precision = size;
  169.  
  170.     width -= precision;
  171.    
  172.     if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
  173.         while (width-- > 0) {  
  174.             if (printf_putchar(' ', ps) == 1)  
  175.                 counter++;
  176.         }
  177.     }
  178.  
  179.     while (precision > size) {
  180.         precision--;
  181.         if (printf_putchar(' ', ps) == 1)  
  182.             ++counter;
  183.     }
  184.    
  185.     if ((retval = printf_putnchars(s, precision, ps)) < 0) {
  186.         return -counter;
  187.     }
  188.  
  189.     counter += retval; 
  190.  
  191.     while (width-- > 0) {
  192.         if (printf_putchar(' ', ps) == 1)  
  193.             ++counter;
  194.     }
  195.    
  196.     return counter;
  197. }
  198.  
  199.  
  200. /** Print number in given base
  201.  *
  202.  * Print significant digits of a number in given
  203.  * base.
  204.  *
  205.  * @param num  Number to print.
  206.  * @param width
  207.  * @param precision
  208.  * @param base Base to print the number in (should
  209.  *             be in range 2 .. 16).
  210.  * @param flags output modifiers
  211.  * @return number of printed characters
  212.  *
  213.  */
  214. static int print_number(uint64_t num, int width, int precision, int base , uint64_t flags, struct printf_spec *ps)
  215. {
  216.     char *digits = digits_small;
  217.     char d[PRINT_NUMBER_BUFFER_SIZE];   /* this is good enough even for base == 2, prefix and sign */
  218.     char *ptr = &d[PRINT_NUMBER_BUFFER_SIZE - 1];
  219.     int size = 0; /* size of number with all prefixes and signs */
  220.     int number_size; /* size of plain number */
  221.     char sgn;
  222.     int retval;
  223.     int counter = 0;
  224.    
  225.     if (flags & __PRINTF_FLAG_BIGCHARS)
  226.         digits = digits_big;   
  227.    
  228.     *ptr-- = 0; /* Put zero at end of string */
  229.  
  230.     if (num == 0) {
  231.         *ptr-- = '0';
  232.         size++;
  233.     } else {
  234.         do {
  235.             *ptr-- = digits[num % base];
  236.             size++;
  237.         } while (num /= base);
  238.     }
  239.    
  240.     number_size = size;
  241.  
  242.     /* Collect sum of all prefixes/signs/... to calculate padding and leading zeroes */
  243.     if (flags & __PRINTF_FLAG_PREFIX) {
  244.         switch(base) {
  245.         case 2: /* Binary formating is not standard, but usefull */
  246.             size += 2;
  247.             break;
  248.         case 8:
  249.             size++;
  250.             break;
  251.         case 16:
  252.             size += 2;
  253.             break;
  254.         }
  255.     }
  256.  
  257.     sgn = 0;
  258.     if (flags & __PRINTF_FLAG_SIGNED) {
  259.         if (flags & __PRINTF_FLAG_NEGATIVE) {
  260.             sgn = '-';
  261.             size++;
  262.         } else if (flags & __PRINTF_FLAG_SHOWPLUS) {
  263.                 sgn = '+';
  264.                 size++;
  265.             } else if (flags & __PRINTF_FLAG_SPACESIGN) {
  266.                     sgn = ' ';
  267.                     size++;
  268.                 }
  269.     }
  270.  
  271.     if (flags & __PRINTF_FLAG_LEFTALIGNED) {
  272.         flags &= ~__PRINTF_FLAG_ZEROPADDED;
  273.     }
  274.  
  275.     /* if number is leftaligned or precision is specified then zeropadding is ignored */
  276.     if (flags & __PRINTF_FLAG_ZEROPADDED) {
  277.         if ((precision == 0) && (width > size)) {
  278.             precision = width - size + number_size;
  279.         }
  280.     }
  281.  
  282.     /* print leading spaces */
  283.     if (number_size > precision) /* We must print whole number not only a part */
  284.         precision = number_size;
  285.  
  286.     width -= precision + size - number_size;
  287.    
  288.     if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
  289.         while (width-- > 0) {  
  290.             if (printf_putchar(' ', ps) == 1)  
  291.                 counter++;
  292.         }
  293.     }
  294.    
  295.     /* print sign */
  296.     if (sgn) {
  297.         if (printf_putchar(sgn, ps) == 1)
  298.             counter++;
  299.     }
  300.    
  301.     /* print prefix */
  302.    
  303.     if (flags & __PRINTF_FLAG_PREFIX) {
  304.         switch(base) {
  305.         case 2: /* Binary formating is not standard, but usefull */
  306.             if (printf_putchar('0', ps) == 1)
  307.                 counter++;
  308.             if (flags & __PRINTF_FLAG_BIGCHARS) {
  309.                 if (printf_putchar('B', ps) == 1)
  310.                     counter++;
  311.             } else {
  312.                 if (printf_putchar('b', ps) == 1)
  313.                     counter++;
  314.             }
  315.             break;
  316.         case 8:
  317.             if (printf_putchar('o', ps) == 1)
  318.                 counter++;
  319.             break;
  320.         case 16:
  321.             if (printf_putchar('0', ps) == 1)
  322.                 counter++;
  323.             if (flags & __PRINTF_FLAG_BIGCHARS) {
  324.                 if (printf_putchar('X', ps) == 1)
  325.                     counter++;
  326.             } else {
  327.                 if (printf_putchar('x', ps) == 1)
  328.                     counter++;
  329.             }
  330.             break;
  331.         }
  332.     }
  333.  
  334.     /* print leading zeroes */
  335.     precision -= number_size;
  336.     while (precision-- > 0) {  
  337.         if (printf_putchar('0', ps) == 1)
  338.             counter++;
  339.     }
  340.  
  341.    
  342.     /* print number itself */
  343.  
  344.     if ((retval = printf_putstr(++ptr, ps)) > 0) {
  345.         counter += retval;
  346.     }
  347.    
  348.     /* print ending spaces */
  349.    
  350.     while (width-- > 0) {  
  351.         if (printf_putchar(' ', ps) == 1)  
  352.             counter++;
  353.     }
  354.  
  355.     return counter;
  356. }
  357.  
  358.  
  359. /** Print formatted string.
  360.  *
  361.  * Print string formatted according to the fmt parameter
  362.  * and variadic arguments. Each formatting directive
  363.  * must have the following form:
  364.  *
  365.  *  \% [ FLAGS ] [ WIDTH ] [ .PRECISION ] [ TYPE ] CONVERSION
  366.  *
  367.  * FLAGS:@n
  368.  *  - "#" Force to print prefix.
  369.  *  For conversion \%o the prefix is 0, for %x and \%X prefixes are 0x and 0X
  370.  *  and for conversion \%b the prefix is 0b.
  371.  *
  372.  *  - "-"   Align to left.
  373.  *
  374.  *  - "+"   Print positive sign just as negative.
  375.  *
  376.  *  - " "   If the printed number is positive and "+" flag is not set, print space in
  377.  *  place of sign.
  378.  *
  379.  *  - "0"   Print 0 as padding instead of spaces. Zeroes are placed between sign and the
  380.  *  rest of the number. This flag is ignored if "-" flag is specified.
  381.  *
  382.  * WIDTH:@n
  383.  *  - Specify minimal width of printed argument. If it is bigger, width is ignored.
  384.  * If width is specified with a "*" character instead of number, width is taken from
  385.  * parameter list. And integer parameter is expected before parameter for processed
  386.  * conversion specification. If this value is negative its absolute value is taken
  387.  * and the "-" flag is set.
  388.  *
  389.  * PRECISION:@n
  390.  *  - Value precision. For numbers it specifies minimum valid numbers.
  391.  * Smaller numbers are printed with leading zeroes. Bigger numbers are not affected.
  392.  * Strings with more than precision characters are cut off.
  393.  * Just as with width, an "*" can be used used instead of a number.
  394.  * An integer value is then expected in parameters. When both width and precision
  395.  * are specified using "*", the first parameter is used for width and the second one
  396.  * for precision.
  397.  *
  398.  * TYPE:@n
  399.  *  - "hh"  Signed or unsigned char.@n
  400.  *  - "h"   Signed or usigned short.@n
  401.  *  - ""    Signed or usigned int (default value).@n
  402.  *  - "l"   Signed or usigned long int.@n
  403.  *  - "ll"  Signed or usigned long long int.@n
  404.  *  - "z"   Type size_t.@n
  405.  *
  406.  *
  407.  * CONVERSION:@n
  408.  *  - % Print percentile character itself.
  409.  *
  410.  *  - c Print single character.
  411.  *
  412.  *  - s Print zero terminated string. If a NULL value is passed as value, "(NULL)" is printed instead.
  413.  *
  414.  *  - P, p  Print value of a pointer. Void * value is expected and it is printed in hexadecimal notation with prefix
  415.  *  (as with '\%#X' or '\%#x' for 32bit or '\%#X' or '\%#x' for 64bit long pointers).
  416.  *
  417.  *  - b Print value as unsigned binary number. Prefix is not printed by default. (Nonstandard extension.)
  418.  *
  419.  *  - o Print value as unsigned octal number. Prefix is not printed by default.
  420.  *
  421.  *  - d,i   Print signed decimal number. There is no difference between d and i conversion.
  422.  *
  423.  *  - u Print unsigned decimal number.
  424.  *
  425.  *  - X, x  Print hexadecimal number with upper- or lower-case. Prefix is not printed by default.
  426.  *
  427.  * All other characters from fmt except the formatting directives
  428.  * are printed in verbatim.
  429.  *
  430.  * @param fmt Formatting NULL terminated string.
  431.  * @return Number of printed characters or negative value on failure.
  432.  */
  433. int printf_core(const char *fmt, struct printf_spec *ps, va_list ap)
  434. {
  435.     int i = 0, j = 0; /* i is index of currently processed char from fmt, j is index to the first not printed nonformating character */
  436.     int end;
  437.     int counter; /* counter of printed characters */
  438.     int retval; /* used to store return values from called functions */
  439.     char c;
  440.     qualifier_t qualifier;  /* type of argument */
  441.     int base;   /* base in which will be parameter (numbers only) printed */
  442.     uint64_t number; /* argument value */
  443.     size_t  size; /* byte size of integer parameter */
  444.     int width, precision;
  445.     uint64_t flags;
  446.    
  447.     /* Don't let other pseudo threads interfere. */
  448.     async_serialize_start();
  449.    
  450.     counter = 0;
  451.    
  452.     while ((c = fmt[i])) {
  453.         /* control character */
  454.         if (c == '%' ) {
  455.             /* print common characters if any processed */ 
  456.             if (i > j) {
  457.                 if ((retval = printf_putnchars(&fmt[j], (size_t)(i - j), ps)) < 0) { /* error */
  458.                     goto minus_out;
  459.                 }
  460.                 counter += retval;
  461.             }
  462.        
  463.             j = i;
  464.             /* parse modifiers */
  465.             flags = 0;
  466.             end = 0;
  467.            
  468.             do {
  469.                 ++i;
  470.                 switch (c = fmt[i]) {
  471.                 case '#': flags |= __PRINTF_FLAG_PREFIX; break;
  472.                 case '-': flags |= __PRINTF_FLAG_LEFTALIGNED; break;
  473.                 case '+': flags |= __PRINTF_FLAG_SHOWPLUS; break;
  474.                 case ' ': flags |= __PRINTF_FLAG_SPACESIGN; break;
  475.                 case '0': flags |= __PRINTF_FLAG_ZEROPADDED; break;
  476.                 default: end = 1;
  477.                 }; 
  478.                
  479.             } while (end == 0);
  480.            
  481.             /* width & '*' operator */
  482.             width = 0;
  483.             if (isdigit(fmt[i])) {
  484.                 while (isdigit(fmt[i])) {
  485.                     width *= 10;
  486.                     width += fmt[i++] - '0';
  487.                 }
  488.             } else if (fmt[i] == '*') {
  489.                 /* get width value from argument list*/
  490.                 i++;
  491.                 width = (int)va_arg(ap, int);
  492.                 if (width < 0) {
  493.                     /* negative width means to set '-' flag */
  494.                     width *= -1;
  495.                     flags |= __PRINTF_FLAG_LEFTALIGNED;
  496.                 }
  497.             }
  498.            
  499.             /* precision and '*' operator */   
  500.             precision = 0;
  501.             if (fmt[i] == '.') {
  502.                 ++i;
  503.                 if (isdigit(fmt[i])) {
  504.                     while (isdigit(fmt[i])) {
  505.                         precision *= 10;
  506.                         precision += fmt[i++] - '0';
  507.                     }
  508.                 } else if (fmt[i] == '*') {
  509.                     /* get precision value from argument list*/
  510.                     i++;
  511.                     precision = (int)va_arg(ap, int);
  512.                     if (precision < 0) {
  513.                         /* negative precision means to ignore it */
  514.                         precision = 0;
  515.                     }
  516.                 }
  517.             }
  518.  
  519.             switch (fmt[i++]) {
  520.             /** TODO: unimplemented qualifiers:
  521.              * t ptrdiff_t - ISO C 99
  522.              */
  523.             case 'h':   /* char or short */
  524.                 qualifier = PrintfQualifierShort;
  525.                 if (fmt[i] == 'h') {
  526.                     i++;
  527.                     qualifier = PrintfQualifierByte;
  528.                 }
  529.                 break;
  530.             case 'l':   /* long or long long*/
  531.                 qualifier = PrintfQualifierLong;
  532.                 if (fmt[i] == 'l') {
  533.                     i++;
  534.                     qualifier = PrintfQualifierLongLong;
  535.                 }
  536.                 break;
  537.             case 'z':   /* size_t */
  538.                 qualifier = PrintfQualifierSizeT;
  539.                 break;
  540.             default:
  541.                 qualifier = PrintfQualifierInt; /* default type */
  542.                 --i;
  543.             }  
  544.            
  545.             base = 10;
  546.  
  547.             switch (c = fmt[i]) {
  548.  
  549.                 /*
  550.                 * String and character conversions.
  551.                 */
  552.             case 's':
  553.                 if ((retval = print_string(va_arg(ap, char*), width, precision, flags, ps)) < 0) {
  554.                     goto minus_out;
  555.                 }
  556.                    
  557.                 counter += retval;
  558.                 j = i + 1;
  559.                 goto next_char;
  560.             case 'c':
  561.                 c = va_arg(ap, unsigned int);
  562.                 if ((retval = print_char(c, width, flags, ps)) < 0) {
  563.                     goto minus_out;
  564.                 }
  565.  
  566.                 counter += retval;
  567.                 j = i + 1;
  568.                 goto next_char;
  569.  
  570.             /*
  571.              * Integer values
  572.             */
  573.             case 'P': /* pointer */
  574.                     flags |= __PRINTF_FLAG_BIGCHARS;
  575.             case 'p':
  576.                 flags |= __PRINTF_FLAG_PREFIX;
  577.                 base = 16;
  578.                 qualifier = PrintfQualifierPointer;
  579.                 break; 
  580.             case 'b':
  581.                 base = 2;
  582.                 break;
  583.             case 'o':
  584.                 base = 8;
  585.                 break;
  586.             case 'd':
  587.             case 'i':
  588.                 flags |= __PRINTF_FLAG_SIGNED;  
  589.             case 'u':
  590.                 break;
  591.             case 'X':
  592.                 flags |= __PRINTF_FLAG_BIGCHARS;
  593.             case 'x':
  594.                 base = 16;
  595.                 break;
  596.             /* percentile itself */
  597.             case '%':
  598.                 j = i;
  599.                 goto next_char;
  600.             /*
  601.             * Bad formatting.
  602.             */
  603.             default:
  604.                 /* Unknown format
  605.                  *  now, the j is index of '%' so we will
  606.                  * print whole bad format sequence
  607.                  */
  608.                 goto next_char;    
  609.             }
  610.        
  611.        
  612.         /* Print integers */
  613.             /* print number */
  614.             switch (qualifier) {
  615.             case PrintfQualifierByte:
  616.                 size = sizeof(unsigned char);
  617.                 number = (uint64_t)va_arg(ap, unsigned int);
  618.                 break;
  619.             case PrintfQualifierShort:
  620.                 size = sizeof(unsigned short);
  621.                 number = (uint64_t)va_arg(ap, unsigned int);
  622.                 break;
  623.             case PrintfQualifierInt:
  624.                 size = sizeof(unsigned int);
  625.                 number = (uint64_t)va_arg(ap, unsigned int);
  626.                 break;
  627.             case PrintfQualifierLong:
  628.                 size = sizeof(unsigned long);
  629.                 number = (uint64_t)va_arg(ap, unsigned long);
  630.                 break;
  631.             case PrintfQualifierLongLong:
  632.                 size = sizeof(unsigned long long);
  633.                 number = (uint64_t)va_arg(ap, unsigned long long);
  634.                 break;
  635.             case PrintfQualifierPointer:
  636.                 size = sizeof(void *);
  637.                 number = (uint64_t)(unsigned long)va_arg(ap, void *);
  638.                 break;
  639.             case PrintfQualifierSizeT:
  640.                 size = sizeof(size_t);
  641.                 number = (uint64_t)va_arg(ap, size_t);
  642.                 break;
  643.             default: /* Unknown qualifier */
  644.                 goto minus_out;
  645.                    
  646.             }
  647.            
  648.             if (flags & __PRINTF_FLAG_SIGNED) {
  649.                 if (number & (0x1 << (size*8 - 1))) {
  650.                     flags |= __PRINTF_FLAG_NEGATIVE;
  651.                
  652.                     if (size == sizeof(uint64_t)) {
  653.                         number = -((int64_t)number);
  654.                     } else {
  655.                         number = ~number;
  656.                         number &= (~((0xFFFFFFFFFFFFFFFFll) <<  (size * 8)));
  657.                         number++;
  658.                     }
  659.                 }
  660.             }
  661.  
  662.             if ((retval = print_number(number, width, precision, base, flags, ps)) < 0 ) {
  663.                 goto minus_out;
  664.             };
  665.  
  666.             counter += retval;
  667.             j = i + 1;
  668.         }  
  669. next_char:
  670.            
  671.         ++i;
  672.     }
  673.    
  674.     if (i > j) {
  675.         if ((retval = printf_putnchars(&fmt[j], (size_t)(i - j), ps)) < 0) { /* error */
  676.             goto minus_out;
  677.         }
  678.         counter += retval;
  679.     }
  680.    
  681.     async_serialize_end();
  682.     return counter;
  683. minus_out:
  684.     async_serialize_end();
  685.     return -counter;
  686. }
  687.  
  688. /** @}
  689.  */
  690.