93 lines
1.8 KiB
C
93 lines
1.8 KiB
C
#include "cache.h"
|
|
#include "chdir-notify.h"
|
|
#include "list.h"
|
|
#include "strbuf.h"
|
|
|
|
struct chdir_notify_entry {
|
|
const char *name;
|
|
chdir_notify_callback cb;
|
|
void *data;
|
|
struct list_head list;
|
|
};
|
|
static LIST_HEAD(chdir_notify_entries);
|
|
|
|
void chdir_notify_register(const char *name,
|
|
chdir_notify_callback cb,
|
|
void *data)
|
|
{
|
|
struct chdir_notify_entry *e = xmalloc(sizeof(*e));
|
|
e->name = name;
|
|
e->cb = cb;
|
|
e->data = data;
|
|
list_add_tail(&e->list, &chdir_notify_entries);
|
|
}
|
|
|
|
static void reparent_cb(const char *name,
|
|
const char *old_cwd,
|
|
const char *new_cwd,
|
|
void *data)
|
|
{
|
|
char **path = data;
|
|
char *tmp = *path;
|
|
|
|
if (!tmp)
|
|
return;
|
|
|
|
*path = reparent_relative_path(old_cwd, new_cwd, tmp);
|
|
free(tmp);
|
|
|
|
if (name) {
|
|
trace_printf_key(&trace_setup_key,
|
|
"setup: reparent %s to '%s'",
|
|
name, *path);
|
|
}
|
|
}
|
|
|
|
void chdir_notify_reparent(const char *name, char **path)
|
|
{
|
|
chdir_notify_register(name, reparent_cb, path);
|
|
}
|
|
|
|
int chdir_notify(const char *new_cwd)
|
|
{
|
|
struct strbuf old_cwd = STRBUF_INIT;
|
|
struct list_head *pos;
|
|
|
|
if (strbuf_getcwd(&old_cwd) < 0)
|
|
return -1;
|
|
if (chdir(new_cwd) < 0) {
|
|
int saved_errno = errno;
|
|
strbuf_release(&old_cwd);
|
|
errno = saved_errno;
|
|
return -1;
|
|
}
|
|
|
|
trace_printf_key(&trace_setup_key,
|
|
"setup: chdir from '%s' to '%s'",
|
|
old_cwd.buf, new_cwd);
|
|
|
|
list_for_each(pos, &chdir_notify_entries) {
|
|
struct chdir_notify_entry *e =
|
|
list_entry(pos, struct chdir_notify_entry, list);
|
|
e->cb(e->name, old_cwd.buf, new_cwd, e->data);
|
|
}
|
|
|
|
strbuf_release(&old_cwd);
|
|
return 0;
|
|
}
|
|
|
|
char *reparent_relative_path(const char *old_cwd,
|
|
const char *new_cwd,
|
|
const char *path)
|
|
{
|
|
char *ret, *full;
|
|
|
|
if (is_absolute_path(path))
|
|
return xstrdup(path);
|
|
|
|
full = xstrfmt("%s/%s", old_cwd, path);
|
|
ret = xstrdup(remove_leading_path(full, new_cwd));
|
|
free(full);
|
|
|
|
return ret;
|
|
}
|