/*
* Calcurse - text-based organizer
*
* Copyright (c) 2004-2011 calcurse Development Team <misc@calcurse.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Send your feedback or comments to : misc@calcurse.org
* Calcurse home page : http://calcurse.org
*
*/
#include <unistd.h>
#include <dirent.h>
#include "calcurse.h"
#include "sha1.h"
struct note_gc_hash {
char *hash;
char buf[MAX_NOTESIZ + 1];
HTABLE_ENTRY (note_gc_hash);
};
static void note_gc_extract_key (struct note_gc_hash *, char **, int *);
static int note_gc_cmp (struct note_gc_hash *, struct note_gc_hash *);
HTABLE_HEAD (htp, NOTE_GC_HSIZE, note_gc_hash);
HTABLE_GENERATE (htp, note_gc_hash, note_gc_extract_key, note_gc_cmp)
/* Create note file from a string and return a newly allocated string that
* contains its name. */
char *
generate_note (const char *str)
{
char *sha1 = mem_malloc (SHA1_DIGESTLEN * 2 + 1);
char notepath[BUFSIZ];
FILE *fp;
sha1_digest (str, sha1);
snprintf (notepath, BUFSIZ, "%s%s", path_notes, sha1);
fp = fopen (notepath, "w");
EXIT_IF (fp == NULL, _("Warning: could not open %s, Aborting..."), notepath);
fputs (str, fp);
file_close (fp, __FILE_POS__);
return sha1;
}
/* Edit a note with an external editor. */
void
edit_note (char **note, char *editor)
{
char tmppath[BUFSIZ];
char *tmpext;
char notepath[BUFSIZ];
char *sha1 = mem_malloc (SHA1_DIGESTLEN * 2 + 1);
FILE *fp;
strncpy (tmppath, get_tempdir (), BUFSIZ);
strncat (tmppath, "/calcurse-note.", BUFSIZ - strlen (tmppath) - 1);
if ((tmpext = new_tempfile (tmppath, TMPEXTSIZ)) == NULL)
return;
strncat (tmppath, tmpext, BUFSIZ - strlen (tmppath) - 1);
mem_free (tmpext);
if (*note != NULL)
{
snprintf (notepath, BUFSIZ, "%s%s", path_notes, *note);
io_file_cp (notepath, tmppath);
}
wins_launch_external (tmppath, editor);
if (io_file_is_empty (tmppath) > 0)
erase_note (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. */
void
view_note (char *note, char *pager)
{
char fullname[BUFSIZ];
if (note == NULL)
return;
snprintf (fullname, BUFSIZ, "%s%s", path_notes, note);
wins_launch_external (fullname, pager);
}
/* Erase a note previously attached to an item. */
void
erase_note (char **note)
{
if (*note == NULL)
return;
mem_free (*note);
*note = NULL;
}
/* Read a serialized note file name from a stream and deserialize it. */
void
note_read (char *buffer, FILE *fp)
{
int i;
for (i = 0; i < MAX_NOTESIZ; i++)
{
buffer[i] = getc (fp);
if (buffer[i] == ' ')
{
buffer[i] = '\0';
return;
}
}
while (getc (fp) != ' ');
buffer[MAX_NOTESIZ] = '\0';
}
static void
note_gc_extract_key (struct note_gc_hash *data, char **key, int *len)
{
*key = data->hash;
*len = strlen (data->hash);
}
static int
note_gc_cmp (struct note_gc_hash *a, struct note_gc_hash *b)
{
return strcmp (a->hash, b->hash);
}
/* Spot and unlink unused note files. */
void
note_gc (void)
{
struct htp gc_htable = HTABLE_INITIALIZER (&gc_htable);
struct note_gc_hash *hp;
DIR *dirp;
struct dirent *dp;
llist_item_t *i;
struct note_gc_hash tmph;
char notepath[BUFSIZ];
if (!(dirp = opendir (path_notes)))
return;
/* Insert all note file names into a hash table. */
do
{
if ((dp = readdir (dirp)) && *(dp->d_name) != '.')
{
hp = mem_malloc (sizeof (struct note_gc_hash));
strncpy (hp->buf, dp->d_name, MAX_NOTESIZ + 1);
hp->hash = hp->buf;
HTABLE_INSERT (htp, &gc_htable, hp);
}
}
while (dp);
closedir (dirp);
/* Remove hashes that are actually in use. */
LLIST_TS_FOREACH (&alist_p, i)
{
struct apoint *apt = LLIST_GET_DATA (i);
if (apt->note)
{
tmph.hash = apt->note;
free (HTABLE_REMOVE (htp, &gc_htable, &tmph));
}
}
LLIST_FOREACH (&eventlist, i)
{
struct event *ev = LLIST_GET_DATA (i);
if (ev->note)
{
tmph.hash = ev->note;
free (HTABLE_REMOVE (htp, &gc_htable, &tmph));
}
}
LLIST_TS_FOREACH (&recur_alist_p, i)
{
struct recur_apoint *rapt = LLIST_GET_DATA (i);
if (rapt->note)
{
tmph.hash = rapt->note;
free (HTABLE_REMOVE (htp, &gc_htable, &tmph));
}
}
LLIST_FOREACH (&recur_elist, i)
{
struct recur_event *rev = LLIST_GET_DATA (i);
if (rev->note)
{
tmph.hash = rev->note;
free (HTABLE_REMOVE (htp, &gc_htable, &tmph));
}
}
LLIST_FOREACH (&todolist, i)
{
struct todo *todo = LLIST_GET_DATA (i);
if (todo->note)
{
tmph.hash = todo->note;
free (HTABLE_REMOVE (htp, &gc_htable, &tmph));
}
}
/* Unlink unused note files. */
HTABLE_FOREACH (hp, htp, &gc_htable)
{
snprintf (notepath, BUFSIZ, "%s%s", path_notes, hp->hash);
unlink (notepath);
}
}
