diff options
Diffstat (limited to 'src/note.c')
| -rw-r--r-- | src/note.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/src/note.c b/src/note.c new file mode 100644 index 0000000..e5595fc --- /dev/null +++ b/src/note.c @@ -0,0 +1,235 @@ +/* + * 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); +}; + +/* 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); + if ((tmpext = new_tempfile (tmppath, TMPEXTSIZ)) == NULL) + return; + strncat (tmppath, tmpext, BUFSIZ); + 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) +{ + HTABLE_HEAD (htp, NOTE_GC_HSIZE, note_gc_hash) 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. */ + HTABLE_GENERATE (htp, note_gc_hash, note_gc_extract_key, note_gc_cmp); + 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); + } +} |