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Use hash-bashed file names in edit_note()

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Note file names are now generated based on their content. Items using
the same note will share a single note file.

Please note that this implies a few changes:

* Both random-style and hash-style note files need to be handled to
  ensure we do not break backwards compatibility.

* Note files may not be moved or deleted if a note is changed or removed
  since the original note file might be used by another item as well.

* A garbage collector to remove unreferenced note files needs to be
  implemented.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
This commit is contained in:
Lukas Fleischer 2011-08-02 13:49:05 +02:00
parent 2fe7a36aab
commit 5c6a00ee93
1 changed files with 31 additions and 11 deletions
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42
src/note.c
View File

@ -37,26 +37,46 @@
#include <unistd.h>
#include "calcurse.h"
#include "sha1.h"
/* Edit a note with an external editor. */
void
edit_note (char **note, char *editor)
{
char fullname[BUFSIZ];
char *filename;
char tmppath[BUFSIZ];
char *tmpext;
char notepath[BUFSIZ];
char *sha1 = mem_malloc (SHA1_DIGESTLEN * 2 + 1);
FILE *fp;
if (*note == NULL)
strncpy (tmppath, get_tempdir (), BUFSIZ);
strncat (tmppath, "/calcurse-note.", BUFSIZ);
if ((tmpext = new_tempfile (tmppath, TMPEXTSIZ)) == NULL)
return;
strncat (tmppath, tmpext, BUFSIZ);
mem_free (tmpext);
if (*note != NULL)
{
if ((filename = new_tempfile (path_notes, NOTESIZ)) != NULL)
*note = filename;
else
return;
snprintf (notepath, BUFSIZ, "%s%s", path_notes, *note);
io_file_cp (notepath, tmppath);
}
(void)snprintf (fullname, BUFSIZ, "%s%s", path_notes, *note);
wins_launch_external (fullname, editor);
if (io_file_is_empty (fullname) > 0)
erase_note (note, ERASE_FORCE);
wins_launch_external (tmppath, editor);
if (io_file_is_empty (tmppath) > 0)
erase_note (note, ERASE_FORCE_KEEP_NOTE);
else if ((fp = fopen (tmppath, "r")))
{
sha1_stream (fp, sha1);
fclose (fp);
*note = sha1;
snprintf (notepath, BUFSIZ, "%s%s", path_notes, *note);
io_file_cp (tmppath, notepath);
}
unlink (tmppath);
}
/* View a note in an external pager. */