It doesn't work "because" of the extra pointer. You found a way around the syntax error, it's valid to assign a pointer to a pointer, but I can't imagine it's actually giving the intended results.
Every time you give strtok_r a string as the first parameter, you are telling it to start over. Keep giving it the same string, and you will keep getting the same results. Give it NULL instead, and it will advance.
That is really not how you're supposed to be using it. I repeat, this is how it's supposed to work:
Last edited by Corona688; 01-16-2014 at 04:13 PM..
Is it possible to make function variables local?
I mean for example, I have a script variable 'name' and in function I have declared variable 'name'
I need to have script's 'name' have the same value as it was before calling the function with the same declaration.
The way to preserve a... (5 Replies)
Hi,
I have a base class and derived a class from the base class, i want to print & read the data for the object created for the derived class,so i have overloaded both the << and >> operators and also have done the foward declaration.
Below is the code snippet,
#include <iostream>
class... (3 Replies)
I attached a README file that I will refer to.
I successfully completed everything in the README file until step 4.
# pwd
/gani/gani-2.4.4
# ls
COPYING Makefile.macros gem.c
Makefile Makefile.sparc_gcc gem.h
Makefile.amd64_gcc ... (1 Reply)
I have no idea what the following means. The teacher is too advanced for me to understand fully. We literally went from running a few commands over the last few months to starting shell scripting. I am not a programmer, I am more hardware oriented. I wish I knew what this question was asking... (3 Replies)
Hi,
While installation of apache on linux, we perform the below tasks.
1) Untar
2) configure
3) make
4) make install.
I wanted to understand the difference and working of configure/make/make install.
Can any one help me understanding this?
Thanks in advance. (1 Reply)
I wrote the following Makefile:
dirs := a b c d
files := $(foreach dir,$(dirs),$(wildcard $(dir)/*))
.PHONY: all
all:
touch $(files)
The first two lines are taken from GNU make tutorial, Section 8.5 The foreach Function. I would expect the recipe
touch $(files)
to be... (2 Replies)
Greetings,
I m wondering if it's possible do do the following :
I have a simple function called "FindMoveDelete" which does the following :
FindMoveDelete()
{
find . -iname "$FILENAME*.ext" -exec mv {} "$PATH/$VAR" \; &&
find . -maxdepth 1 -type d -iname "$FILENAME*" -exec rm -rf {}... (6 Replies)
Hi,
If I declare a function inside another function, it overwrites any previously declared function with the same name. This is NOT what I want.
Example:
#!/bin/bash
_test() { echo test; }
_myf() {
# I'm using the same name as the other function.
_test() { echo local test; }... (8 Replies)
Hello -
I wrote few scripts on bash shell script and grafana triggers those scripts and show on console .
I want to write the console output to a log file as well by using tee command and I am successful as well . I am wondering Instead of writing same logic on multiple scripts , why... (4 Replies)
Hi All,
Good Day, seeking for your assistance on how to not perform my 2nd, 3rd,4th etc.. function if my 1st function is in else condition.
#Body
function1()
{
if
then
echo "exist"
else
echo "not exist"
}
#if not exist in function1 my all other function will not proceed.... (4 Replies)
Discussion started by: meister29
4 Replies
LEARN ABOUT FREEBSD
strtok
STRTOK(3) BSD Library Functions Manual STRTOK(3)NAME
strtok, strtok_r -- string tokens
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
char *
strtok(char *str, const char *sep);
char *
strtok_r(char *str, const char *sep, char **last);
DESCRIPTION
This interface is obsoleted by strsep(3).
The strtok() function is used to isolate sequential tokens in a null-terminated string, str. These tokens are separated in the string by at
least one of the characters in sep. The first time that strtok() is called, str should be specified; subsequent calls, wishing to obtain
further tokens from the same string, should pass a null pointer instead. The separator string, sep, must be supplied each time, and may
change between calls.
The implementation will behave as if no library function calls strtok().
The strtok_r() function is a reentrant version of strtok(). The context pointer last must be provided on each call. The strtok_r() function
may also be used to nest two parsing loops within one another, as long as separate context pointers are used.
The strtok() and strtok_r() functions return a pointer to the beginning of each subsequent token in the string, after replacing the token
itself with a NUL character. When no more tokens remain, a null pointer is returned.
EXAMPLES
The following uses strtok_r() to parse two strings using separate contexts:
char test[80], blah[80];
char *sep = "\/:;=-";
char *word, *phrase, *brkt, *brkb;
strcpy(test, "This;is.a:test:of=the/string\tokenizer-function.");
for (word = strtok_r(test, sep, &brkt);
word;
word = strtok_r(NULL, sep, &brkt))
{
strcpy(blah, "blah:blat:blab:blag");
for (phrase = strtok_r(blah, sep, &brkb);
phrase;
phrase = strtok_r(NULL, sep, &brkb))
{
printf("So far we're at %s:%s
", word, phrase);
}
}
SEE ALSO memchr(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), wcstok(3)STANDARDS
The strtok() function conforms to ISO/IEC 9899:1990 (``ISO C90'').
AUTHORS
Wes Peters <wes@softweyr.com>, Softweyr LLC
Based on the FreeBSD 3.0 implementation.
BUGS
The System V strtok(), if handed a string containing only delimiter characters, will not alter the next starting point, so that a call to
strtok() with a different (or empty) delimiter string may return a non-NULL value. Since this implementation always alters the next starting
point, such a sequence of calls would always return NULL.
BSD November 27, 1998 BSD