/*
* Parse a file path and return a structure containing its
* components.
*
* This function takes a file path (e.g. /var/tmp/myexample.txt)
* and produces a structure containing points to the path elements.
*
* typedef struct _PATHINFO_STRUCT {
* char* fullpath;
* char* filename;
* char* dirpath;
* char* extension;
* int isdir;
* } PATHINFO_STRUCT;
*
* The PATHINFO_STRUCT structure is allocated from the heap, as are
* the strings pointed two by its members. This memory must be
* returned to the heap by calling pathinfo_release, passing a pointer
* to the PATHINFO_STRUCT returned by pathinfo_parse.
*/
PATHINFO_STRUCT* pathinfo_parse_filepath(const char* pathname) {
DQHEADER deque;
PATHINFO_STRUCT* pathinfop;
char* pathdelim = "/";
char* pathbuff;
char* tokenp = NULL;
char* token_aheadp = NULL;
int isdir = 0;
// Get a pathinfo structure
pathinfop = calloc(1, sizeof(PATHINFO_STRUCT));
pathinfop->fullpath = strdup(pathname);
// Initialize a plenty big deque to hold path components.
dq_init(strlen(pathname) + 1, sizeof(char), &deque);
// Break the file path into tokens. Copy to a working buffer
// so we don't alter path with calls to strtok
pathbuff = strdup(pathname);
// Check for leading /
if (pathbuff[0] == '/') {
push_token(&deque, "/");
}
isdir = pathinfo_is_dir(pathname);
pathinfop->isdir = isdir;
// Get first token and look ahead token
tokenp = strtok(pathbuff, pathdelim);
token_aheadp = strtok(NULL, pathdelim);
while (tokenp != NULL) {
if (token_aheadp != NULL) {
// More tokens in path string
push_token(&deque, tokenp);
push_token(&deque, "/");
tokenp = token_aheadp;
token_aheadp = strtok(NULL, pathdelim);
} else {
// tokenp is the last token in the sequence
if (!isdir) {
parse_filename(pathinfop, tokenp);
} else {
push_token(&deque, tokenp);
}
tokenp = NULL;
}
}
set_dirpath(pathinfop, &deque);
free(pathbuff);
return pathinfop;
}
int setup_one_watch (const char *dir)
{
int wd;
wd = inotify_add_watch(ifd, dir, MASK);
if (wd < 0) {
if (errno == EACCES || errno == ENOENT)
return -1;
die_errno("inotify_add_watch");
}
set_dirpath(wd, dir);
#ifdef DEBUG
fprintf(stderr, "%d: %s\n", wd, dir);
#endif
return 0;
}
