X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/dd3c57bc8cac59e0d657ee665ce462988d27d714..18c831dcd0ae4d660c70ccac69d27ed2a97851be:/fwatch.c

diff --git a/fwatch.c b/fwatch.c
deleted file mode 100644
index 69f5498..0000000
--- a/fwatch.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/* -*-c-*-
- *
- * Watch a file for changes
- *
- * (c) 2001 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------*
- *
- * This file is part of the mLib utilities library.
- *
- * mLib is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * mLib is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with mLib; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <errno.h>
-#include <string.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include "fwatch.h"
-
-/*----- Main code ---------------------------------------------------------*/
-
-/* --- @doupdate@ --- *
- *
- * Arguments:	@fwatch *f@ = pointer to an @fwatch@ structure
- *		@struct stat *st@ = pointer to file state
- *		@int err@ = whether there was an error
- *
- * Returns:	Nonzero if the file has changed.
- *
- * Use:		Updates the information in an @fwatch@ block.
- */
-
-static void copy(fwatch *f, struct stat *st)
-{
-  f->dev = st->st_dev; f->ino = st->st_ino;
-  f->mtime = st->st_mtime; f->size = st->st_size;
-  f->mode = st->st_mode;
-  f->uid = st->st_uid; f->gid = st->st_gid;
-}
-
-static int doupdate(fwatch *f, struct stat *st, int err)
-{
-  /* --- Fiddle with the error state --- *
-   *
-   * Only the presence or absence of error is interesting to someone wanting
-   * to read the file.
-   */
-
-  if (err)
-    err = errno;
-  if (err || f->err) {
-    if (!err != !f->err) {
-      f->err = err;
-      if (!err)
-	copy(f, st);
-      return (1);
-    }
-    return (0);
-  }
-
-  /* --- Check everything else --- */
-
-  if (st->st_dev != f->dev || st->st_ino != f->ino ||
-      st->st_mtime != f->mtime || st->st_size != f->size ||
-      st->st_mode != f->mode ||
-      st->st_uid != f->uid || st->st_gid != f->gid) {
-    copy(f, st);
-    return (1);
-  }
-  return (0);
-}
-
-/* --- @fwatch_init@, @fwatch_update@, etc --- *
- *
- * Arguments:	@fwatch *f@ = pointer to an @fwatch@ structure
- *		@const char *name@ = name of the file to watch
- *		@int fd@ = a file descriptor to watch
- *
- * Returns:	The @update@ functions return nonzero if the file has
- *		changed.
- *
- * Use:		Stores information about a file which can be used to watch
- *		for changes.  The structures may be freed without telling
- *		anyone.
- */
-
-void fwatch_init(fwatch *f, const char *name)
-{
-  struct stat st;
-  memset(f, 0, sizeof(*f));
-  doupdate(f, &st, stat(name, &st));
-}
-
-void fwatch_initfd(fwatch *f, int fd)
-{
-  struct stat st;
-  memset(f, 0, sizeof(*f));
-  doupdate(f, &st, fstat(fd, &st));
-}
-
-int fwatch_update(fwatch *f, const char *name)
-{
-  struct stat st;
-  return (doupdate(f, &st, stat(name, &st)));
-}
-
-int fwatch_updatefd(fwatch *f, int fd)
-{
-  struct stat st;
-  return (doupdate(f, &st, fstat(fd, &st)));
-}
-
-/*----- That's all, folks -------------------------------------------------*/