static char *cat_paths(const char *a, const char *b)
{
char *str;
size_t sz;
int as, bs;
size_t na, nb;
if (a && !b)
return copy_string(a);
if (b && !a)
return copy_string(b);
if (!a && !b)
return NULL;
as = 0;
bs = 0;
na = strlen(a);
nb = strlen(b);
if (na && a[na - 1] == '/')
as = 1;
if (nb && b[0] == '/')
bs = 1;
if ((as && !bs) || (!as && bs))
return cat_strings(a, b);
if (as && bs)
return cat_strings(a, b + 1);
sz = na + nb + 2;
str = (char *) malloc(sz);
CHECK(str != NULL);
strcpy(str, a);
strcat(str, "/");
strcat(str, b);
return str;
}
int main(int argc, char *argv[])
{
char message[1024];
memset(message, 0, sizeof(message));
cat_strings(message, 4, "I love ", "his ", "dark ", "hair.");
printf("%s\n", message);
return 0;
}
// removing temporary files from the HDD
int rm_tmp_file(char* tmp_name) {
char *command;
if ( file_exist(tmp_name) ) {
#if defined(__linux) || defined(__APPLE__)
command = strdup("rm -f ");
#else
command = strdup("del ");
#endif
command = cat_strings(command, tmp_name);
if ( system(command) == -1 ) {
fprintf(stderr,"Error on removing %s.\n", tmp_name);
return -1;
}
free(command);
}
return 0;
}