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