/* $Id: tools.c 448 2010-08-22 09:20:48Z tsaviran $ * ------------------------------------------------------- * Copyright (C) 2002-2005 Tommi Saviranta <wnd@iki.fi> * ------------------------------------------------------- * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. */ #ifdef HAVE_CONFIG_H#include <config.h>#endif /* ifdef HAVE_CONFIG_H */ #include "tools.h" #include <ctype.h>#include <stdlib.h>#include <string.h> #include <time.h>   /** * Convert to upper case. * @str:	String to convert */voidupcase(char *str){	char *ptr;	for (ptr = str; ptr != NULL && *ptr != '\0'; ptr++) {		*ptr = (char) toupper((int) *ptr);	}} /* void upcade(char *str) */   /** * Convert to lower case. * @str:	String to convert */voidlowcase(char *str){	char *ptr;	for (ptr = str; ptr != NULL && *ptr != '\0'; ptr++) {		*ptr = (char) tolower((int) *ptr);	}} /* void lowcase(char *str) */   /** * Generates a random string or new nick out of the old one. * @target:	Target. It *target != '\0', target will be treated as old nick. *		If *target == '\0', completely random string will be created. * @length:	(Maximum) length for target * @fillchar:	Character to use pad undersized target * * Target must have space for length + 1 characters. * * This function doesn't work with multibyte characters. */voidrandname(char *target, const size_t length, const char fillchar){	size_t oldlen;	char shift; 	/* TODO paranoia */	if (target == NULL) {		/* No target - nothing to do. */		return;	} 	/* Genereate from scratch? */	if (target[0] == '\0') {		size_t i;		for (i = 0; i < length; i++) {			/*			 * Using rand() here could be unwise due to bad			 * randomness of it. We ignore the threat, as			 *   a) user can always run mkpasswd,			 *   b) knowing the password _should_ only expose			 *      your IRC client for public, not your computer			 */			target[i] = (char)('A' + (rand() % 56));		}		target[length] = '\0';		return;	} 	/* Try to generate a new nick from the old one. */	oldlen = strlen(target); 	if (oldlen < length) {		/*		 * Nick is shorter than maximum length, try adding fillchar		 * at the end.		 */		target[oldlen] = fillchar;		target[oldlen + 1] = '\0';		return;	} 	/* Nick is already as long as it can be. Try rotating the nick. */	shift = target[length - 1];	memmove(target + 1, target, length - 1);	target[0] = shift;} /* void randname(char *target, const size_t length, const char fillchar) */   /** * Returns index of first occurance of "c" in "str". * @str:	String to look from * @c:		Character to find * * Returns: Index of last occurance of "c" in "str". -1 if "c" was not found. * * This function does _not_ work with multibyte characters. We get "int c" * instead of "char c" so that this could be fixed without major rewriting. */intpos(const char *s, const int c){	/* It takes less space to do this than to use strchr. */	int i; 	for (i = 0; s[i] != '\0'; i++) {		if (s[i] == c) {			return i;		}	} 	return -1;} /* int pos(const char *s, const int c) */   /** * Returns index of last occurance of "c" in "str". * @str:	String to look from * @c:		Character to find * * Returns: Index of last occurance of "c" in "str". -1 if "c" was not found. * * This function does _not_ work with multibyte characters. We get "int c" * instead of "char c" so that this could be fixed without major rewriting. */intlastpos(const char *s, const int c){	/* It takes less space to do this than to use strchr. */	int i; 	if (s == NULL) {		return -1;	} 	for (i = strlen(s); i >= 0; i--) {		if (s[i] == c) {			return i;		}	} 	return -1;} /* int lastpos(const char *s, const int c) */   /** * Finds next word starting from s. * @s:	Where to start searching. * * Returns: Pointer to stuff starting from next word, NULL if there are no * words left. */char *nextword(char *s){	int i; 	i = pos(s, ' ');	if (i == -1) {		return NULL;	} else {		return s + i + 1;	}} /* char *nextword(char *s) */   /** * Finds last word, starting from s. * @s:	Where to start searching. * * Returns: Pointer to last word, NULL if there are no words before s. */char *lastword(char *s){	int i; 	i = lastpos(s, ' ');	if (i == -1) {		return s;	} else {		return s + i + 1;	}} /* char *lastword(char *s) */   #ifdef UPTIMEvoidgetuptime(time_t now, int *days, int *hours, int *minutes, int *seconds){	*days = now / 86400;	now %= 86400;	*hours = now / 3600;	now %= 3600;	*minutes = now / 60;	*seconds = now % 60;} /* void getuptime(time_t now, int *days, int *hours, int *minutes,		int *seconds) */#endif	/* UPTIME */   /** * Creates a timestamp. * @t:		Pointer to time, NULL if current time. * @mode:	Timestamp format * * Returns: Pointer to timestamp. Allocated memory must not be freed. * * Creates timestamps like: *	Sun Jan 02 11:53:33 2002 * or *	Jan 02 11:53:33 */const char *get_timestamp(time_t *t, const timestamp_t mode){	struct tm	*form;	static char	stamp[100];	time_t		ts; 	if (t == NULL) {		time(&ts);	} else {		ts = *t;	}	form = localtime(&ts);	switch (mode) {		case TIMESTAMP_LONG:			strftime(stamp, 99, "%a %b %d %H:%M:%S %Y", form);			break;		case TIMESTAMP_SHORT:			strftime(stamp, 99, "%b %d %H:%M:%S", form);	}	stamp[99] = '\0'; 	return stamp;} /* char *get_timestamp(time_t *t, const timestamp_t mode) */   /** * Creates a short current timestamp. * * Returns: Pointer to timestamp. Allocated memory must not be freed. * * Creates a timestamp like: "Jan 02 11:53:33" */const char *get_short_localtime(void){	/* termination guaranteed in get_timestamp() */	return get_timestamp(NULL, TIMESTAMP_SHORT);} /* const char *get_short_localtime(void) */