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Copy pathchdir-notify.c
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84 lines (69 loc) · 1.68 KB
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#include "git-compat-util.h"
#include "abspath.h"
#include "chdir-notify.h"
#include "list.h"
#include "path.h"
#include "strbuf.h"
#include "trace.h"
struct chdir_notify_entry {
chdir_notify_callback cb;
void *data;
struct list_head list;
};
static LIST_HEAD(chdir_notify_entries);
void chdir_notify_register(chdir_notify_callback cb,
void *data)
{
struct chdir_notify_entry *e = xmalloc(sizeof(*e));
e->cb = cb;
e->data = data;
list_add_tail(&e->list, &chdir_notify_entries);
}
void chdir_notify_unregister(chdir_notify_callback cb,
void *data)
{
struct list_head *pos, *p;
list_for_each_safe(pos, p, &chdir_notify_entries) {
struct chdir_notify_entry *e =
list_entry(pos, struct chdir_notify_entry, list);
if (e->cb != cb || e->data != data)
continue;
list_del(pos);
free(e);
}
}
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(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;
}