please help with extraction of command from double qoutes

[mile1982]

hey

i want to extract an argument from double qoutes, eg: when the user enters:

prompt "mile"

i need to extract everything within the double quotes, in my case, mile, and save it to a string. feedback/code would be appreciated

thanks
mile1982

[RobSeace]

I'm not sure what the problem is... What's so difficult about doing
such a thing?? It's really rather simple:


char *parse_token (char *str, char **endp)
{
char *beg, *end, ch;

for (beg = str; *beg && isspace (*beg); beg++)
;

if ((*beg == '"') || (*beg == '\'')) {
ch = *beg++;
} else {
ch = '\0';
}

for (end = beg; *end; end++) {
if (ch == '\0') { /* just parsing whitespace-delimited token */
if (isspace (*end)) {
ch = *end;
break;
}
} else if (*end == ch) { /* parsing quoted token */
break;
}
}

if (*end != ch)
return (NULL); /* error: mismatched quotes */

if (*end) *end++ = '\0';
if (endp) *endp = end;

return (beg);
}


Now, that's all just quick and dirty, and off the top of my head,
completely untested... But, I think you should get the picture,
anyway... It's really not difficult to do... You might also want to
add handling for backslash-escaped quote chars inside the
quoted tokens... Hopefully, it's fairly obvious what you'd need to
change to make that happen...

[Nope]

int getString(char *text, char *target)
{
char *anf=strchr(text,'"');
if(anf==0) return -1; // error, no " found
anf++; // text starts one behind the "
char *end=strchr(anf,'"');
if(end==0) return -1; // error, no second " found

memcpy(target,anf,end-anf);
target[end-anf]=0;

return end-anf;
}

The strchr() command looks for the first time the specified char appears in
a string and delivers a pointer to this char back. So to get the real start
who have to add 1 to get the real first char. In theory you'd also have to
sub 1 from the end, but as you then would have to add 1 again to get the
right length I skipped that. This code returns -1 on error, else the length of
the extracted string.

You should pass the maximum fitting string length also to the function and
test before the copy if the length fits in it.