/* **************************************************************************** * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge **************************************************************************** * * File: printf.c * Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk) * Changes: Grzegorz Milos (gm281@cam.ac.uk) * * Date: Aug 2003, Aug 2005 * * Environment: Xen Minimal OS * Description: Library functions for printing * (freebsd port, mainly sys/subr_prf.c) * **************************************************************************** * *- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * $FreeBSD: src/sys/libkern/divdi3.c,v 1.6 1999/08/28 00:46:31 peter Exp $ */ #if !defined HAVE_LIBC #include #include #include #include #include #include /** * simple_strtoul - convert a string to an unsigned long * @cp: The start of the string * @endp: A pointer to the end of the parsed string will be placed here * @base: The number base to use */ unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base) { unsigned long result = 0,value; if (!base) { base = 10; if (*cp == '0') { base = 8; cp++; if ((*cp == 'x') && isxdigit(cp[1])) { cp++; base = 16; } } } while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : toupper(*cp)-'A'+10) < base) { result = result*base + value; cp++; } if (endp) *endp = (char *)cp; return result; } /** * simple_strtol - convert a string to a signed long * @cp: The start of the string * @endp: A pointer to the end of the parsed string will be placed here * @base: The number base to use */ long simple_strtol(const char *cp,char **endp,unsigned int base) { if(*cp=='-') return -simple_strtoul(cp+1,endp,base); return simple_strtoul(cp,endp,base); } /** * simple_strtoull - convert a string to an unsigned long long * @cp: The start of the string * @endp: A pointer to the end of the parsed string
import sys

from widget_module import Widget


class DerivedWidget(Widget):
    def __init__(self, message):
        super().__init__(message)

    def the_answer(self):
        return 42

    def argv0(self):
        return sys.argv[0]
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-19 19:07:55 +0000
++fmt; } /* default base */ base = 10; switch (*fmt) { case 'c': if (!(flags & LEFT)) { while (--field_width > 0) { if (str <= end) *str = ' '; ++str; } } c = (unsigned char) va_arg(args, int); if (str <= end) *str = c; ++str; while (--field_width > 0) { if (str <= end) *str = ' '; ++str; } continue; case 's': s = va_arg(args, char *); if (!s) s = ""; len = strnlen(s, precision); if (!(flags & LEFT)) { while (len < field_width--) { if (str <= end) *str = ' '; ++str; } } for (i = 0; i < len; ++i) { if (str <= end) *str = *s; ++str; ++s; } while (len < field_width--) { if (str <= end) *str = ' '; ++str; } continue; case 'p': if (field_width == -1) { field_width = 2*sizeof(void *); flags |= ZEROPAD; } str = number(str, end, (unsigned long) va_arg(args, void *), 16, field_width, precision, flags); continue; case 'n': /* FIXME: * What does C99 say about the overflow case here? */ if (qualifier == 'l') { long * ip = va_arg(args, long *); *ip = (str - buf); } else if (qualifier == 'Z') { size_t * ip = va_arg(args, size_t *); *ip = (str - buf); } else { int * ip = va_arg(args, int *); *ip = (str - buf); } continue; case '%': if (str <= end) *str = '%'; ++str; continue; /* integer number formats - set up the flags and "break" */ case 'o': base = 8; break; case 'X': flags |= LARGE; case 'x': base = 16; break; case 'd': case 'i': flags |= SIGN; case 'u': break; default: if (str <= end) *str = '%'; ++str; if (*fmt) { if (str <= end) *str = *fmt; ++str; } else { --fmt; } continue; } if (qualifier == 'L') num = va_arg(args, long long); else if (qualifier == 'l') { num = va_arg(args, unsigned long); if (flags & SIGN) num = (signed long) num; } else if (qualifier == 'Z') { num = va_arg(args, size_t); } else if (qualifier == 'h') { num = (unsigned short) va_arg(args, int); if (flags & SIGN) num = (signed short) num; } else { num = va_arg(args, unsigned int); if (flags & SIGN) num = (signed int) num; } str = number(str, end, num, base, field_width, precision, flags); } if (str <= end) *str = '\0'; else if (size > 0) /* don't write out a null byte if the buf size is zero */ *end = '\0'; /* the trailing null byte doesn't count towards the total * ++str; */ return str-buf; } /** * snprintf - Format a string and place it in a buffer * @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 */ int snprintf(char * buf, size_t size, const char *fmt, ...) { va_list args; int i; va_start(args, fmt); i=vsnprintf(buf,size,fmt,args); va_end(args); return i; } /** * vsprintf - Format a string and place it in a buffer * @buf: The buffer to place the result into * @fmt: The format string to use * @args: Arguments for the format string * * Call this function if you are already dealing with a va_list. * You probably want sprintf instead. */ int vsprintf(char *buf, const char *fmt, va_list args) { return vsnprintf(buf, 0xFFFFFFFFUL, fmt, args); } /** * sprintf - Format a string and place it in a buffer * @buf: The buffer to place the result into * @fmt: The format string to use * @...: Arguments for the format string */ int sprintf(char * buf, const char *fmt, ...) { va_list args; int i; va_start(args, fmt); i=vsprintf(buf,fmt,args); va_end(args); return i; } /** * vsscanf - Unformat a buffer into a list of arguments * @buf: input buffer * @fmt: format of buffer * @args: arguments */ int vsscanf(const char * buf, const char * fmt, va_list args) { const char *str = buf; char *next; char digit; int num = 0; int qualifier; int base; int field_width; int is_sign = 0; while(*fmt && *str) { /* skip any white space in format */ /* white space in format matchs any amount of * white space, including none, in the input. */ if (isspace(*fmt)) { while (isspace(*fmt)) ++fmt; while (isspace(*str)) ++str; } /* anything that is not a conversion must match exactly */ if (*fmt != '%' && *fmt) { if (*fmt++ != *str++) break; continue; } if (!*fmt) break; ++fmt; /* skip this conversion. * advance both strings to next white space */ if (*fmt == '*') { while (!isspace(*fmt) && *fmt) fmt++; while (!isspace(*str) && *str) str++; continue; } /* get field width */ field_width = -1; if (isdigit(*fmt)) field_width = skip_atoi(&fmt); /* get conversion qualifier */ qualifier = -1; if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || *fmt == 'Z' || *fmt == 'z') { qualifier = *fmt++; if (unlikely(qualifier == *fmt)) { if (qualifier == 'h') { qualifier = 'H'; fmt++; } else if (qualifier == 'l') { qualifier = 'L'; fmt++; } } } base = 10; is_sign = 0; if (!*fmt || !*str) break; switch(*fmt++) { case 'c': { char *s = (char *) va_arg(args,char*); if (field_width == -1) field_width = 1; do { *s++ = *str++; } while (--field_width > 0 && *str); num++; } continue; case 's': { char *s = (char *) va_arg(args, char *); if(field_width == -1) field_width = INT_MAX; /* first, skip leading white space in buffer */ while (isspace(*str)) str++; /* now copy until next white space */ while (*str && !isspace(*str) && field_width--) { *s++ = *str++; } *s = '\0'; num++; } continue; case 'n': /* return number of characters read so far */ { int *i = (int *)va_arg(args,int*); *i = str - buf; } continue; case 'o': base = 8; break; case 'x': case 'X': base = 16; break; case 'i': base = 0; case 'd': is_sign = 1; case 'u': break; case '%': /* looking for '%' in str */ if (*str++ != '%') return num; continue; default: /* invalid format; stop here */ return num; } /* have some sort of integer conversion. * first, skip white space in buffer. */ while (isspace(*str)) str++; digit = *str; if (is_sign && digit == '-') digit = *(str + 1); if (!digit || (base == 16 && !isxdigit(digit)) || (base == 10 && !isdigit(digit)) || (base == 8 && (!isdigit(digit) || digit > '7')) || (base == 0 && !isdigit(digit))) break; switch(qualifier) { case 'H': /* that's 'hh' in format */ if (is_sign) { signed char *s = (signed char *) va_arg(args,signed char *); *s = (signed char) simple_strtol(str,&next,base); } else { unsigned char *s = (unsigned char *) va_arg(args, unsigned char *); *s = (unsigned char) simple_strtoul(str, &next, base); } break; case 'h': if (is_sign) { short *s = (short *) va_arg(args,short *); *s = (short) simple_strtol(str,&next,base); } else { unsigned short *s = (unsigned short *) va_arg(args, unsigned short *); *s = (unsigned short) simple_strtoul(str, &next, base); } break; case 'l': if (is_sign) { long *l = (long *) va_arg(args,long *); *l = simple_strtol(str,&next,base); } else { unsigned long *l = (unsigned long*) va_arg(args,unsigned long*); *l = simple_strtoul(str,&next,base); } break; case 'L': if (is_sign) { long long *l = (long long*) va_arg(args,long long *); *l = simple_strtoll(str,&next,base); } else { unsigned long long *l = (unsigned long long*) va_arg(args,unsigned long long*); *l = simple_strtoull(str,&next,base); } break; case 'Z': case 'z': { size_t *s = (size_t*) va_arg(args,size_t*); *s = (size_t) simple_strtoul(str,&next,base); } break; default: if (is_sign) { int *i = (int *) va_arg(args, int*); *i = (int) simple_strtol(str,&next,base); } else { unsigned int *i = (unsigned int*) va_arg(args, unsigned int*); *i = (unsigned int) simple_strtoul(str,&next,base); } break; } num++; if (!next) break; str = next; } return num; } /** * 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, ...) { va_list args; int i; va_start(args,fmt); i = vsscanf(buf,fmt,args); va_end(args); return i; } #endif