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-rw-r--r--camel/camel-folder-thread.c626
1 files changed, 0 insertions, 626 deletions
diff --git a/camel/camel-folder-thread.c b/camel/camel-folder-thread.c
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--- a/camel/camel-folder-thread.c
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/*
- * Copyright (C) 2000 Helix Code Inc.
- *
- * Authors: Michael Zucchi <notzed@helixcode.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- */
-
-/* TODO: This could probably be made a camel object, but it isn't really required */
-
-#include <config.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <glib.h>
-#include <ctype.h>
-
-#include "camel-folder-thread.h"
-#include "e-util/e-memory.h"
-
-#define d(x)
-
-#define TIMEIT
-
-#ifdef TIMEIT
-#include <sys/time.h>
-#include <unistd.h>
-#endif
-
-static void
-container_add_child(CamelFolderThreadNode *node, CamelFolderThreadNode *child)
-{
- d(printf("\nAdding child %p to parent %p \n", child, node));
- child->next = node->child;
- node->child = child;
- child->parent = node;
-}
-
-static void
-container_parent_child(CamelFolderThreadNode *parent, CamelFolderThreadNode *child)
-{
- CamelFolderThreadNode *c, *node;
-
- /* are we already the right parent? */
- if (child->parent == parent)
- return;
-
- /* would this create a loop? */
- node = parent->parent;
- while (node) {
- if (node == child)
- return;
- node = node->parent;
- }
-
- /* are we unparented? */
- if (child->parent == NULL) {
- container_add_child(parent, child);
- return;
- }
-
- /* else remove child from its existing parent, and reparent */
- node = child->parent;
- c = (CamelFolderThreadNode *)&node->child;
- d(printf("scanning children:\n"));
- while (c->next) {
- d(printf(" %p\n", c));
- if (c->next==child) {
- d(printf("found node %p\n", child));
- c->next = c->next->next;
- child->parent = NULL;
- container_add_child(parent, child);
- return;
- }
- c = c->next;
- }
-
- printf("DAMN, we shouldn't be here!\n");
-}
-
-static void
-prune_empty(CamelFolderThread *thread, CamelFolderThreadNode **cp)
-{
- CamelFolderThreadNode *child, *next, *c, *lastc;
-
- /* yes, this is intentional */
- lastc = (CamelFolderThreadNode *)cp;
- while (lastc->next) {
- c = lastc->next;
-
- d(printf("checking message %p %p (%08x%08x)\n", c,
- c->message, c->message?c->message->message_id.id.part.hi:0,
- c->message?c->message->message_id.id.part.lo:0));
- if (c->message == NULL) {
- if (c->child == NULL) {
- d(printf("removing empty node\n"));
- lastc->next = c->next;
- e_memchunk_free(thread->node_chunks, c);
- continue;
- }
- if (c->parent || c->child->next==0) {
- d(printf("promoting child\n"));
- lastc->next = c->next; /* remove us */
- child = c->child;
- while (child) {
- next = child->next;
-
- child->parent = c->parent;
- child->next = lastc->next;
- lastc->next = child;
-
- child = next;
- }
- continue;
- }
- }
- prune_empty(thread, &c->child);
- lastc = c;
- }
-}
-
-static void
-hashloop(void *key, void *value, void *data)
-{
- CamelFolderThreadNode *c = value;
- CamelFolderThreadNode *tail = data;
-
- if (c->parent == NULL) {
- c->next = tail->next;
- tail->next = c;
- }
-}
-
-static char *
-get_root_subject(CamelFolderThreadNode *c, int *re)
-{
- char *s, *p;
- CamelFolderThreadNode *scan;
-
- s = NULL;
- *re = FALSE;
- if (c->message)
- s = (char *)camel_message_info_subject(c->message);
- else {
- /* one of the children will always have a message */
- scan = c->child;
- while (scan) {
- if (scan->message) {
- s = (char *)camel_message_info_subject(scan->message);
- break;
- }
- scan = scan->next;
- }
- }
- if (s != NULL) {
- while (*s) {
- while (isspace(*s))
- s++;
- if (s[0] == 0)
- break;
- if ((s[0] == 'r' || s[0]=='R')
- && (s[1] == 'e' || s[1]=='E')) {
- p = s+2;
- while (isdigit(*p) || (ispunct(*p) && (*p != ':')))
- p++;
- if (*p==':') {
- *re = TRUE;
- s = p+1;
- } else
- break;
- } else
- break;
- }
- if (*s)
- return s;
- }
- return NULL;
-}
-
-/* this can be pretty slow, but not used often */
-/* clast cannot be null */
-static void
-remove_node(CamelFolderThreadNode **list, CamelFolderThreadNode *node, CamelFolderThreadNode **clast)
-{
- CamelFolderThreadNode *c;
-
- /* this is intentional, even if it looks funny */
- /* if we have a parent, then we should remove it from the parent list,
- otherwise we remove it from the root list */
- if (node->parent) {
- c = (CamelFolderThreadNode *)&node->parent->child;
- } else {
- c = (CamelFolderThreadNode *)list;
- }
- while (c->next) {
- if (c->next == node) {
- if (*clast == c->next)
- *clast = c;
- c->next = c->next->next;
- return;
- }
- c = c->next;
- }
-
- printf("ERROR: removing node %p failed\n", node);
-}
-
-static void
-group_root_set(CamelFolderThread *thread, CamelFolderThreadNode **cp)
-{
- GHashTable *subject_table = g_hash_table_new(g_str_hash, g_str_equal);
- CamelFolderThreadNode *c, *clast, *scan, *container;
-
- /* gather subject lines */
- d(printf("gathering subject lines\n"));
- clast = (CamelFolderThreadNode *)cp;
- c = clast->next;
- while (c) {
- c->root_subject = get_root_subject(c, &c->re);
- if (c->root_subject) {
- container = g_hash_table_lookup(subject_table, c->root_subject);
- if (container == NULL
- || (container->message == NULL && c->message)
- || (container->re == TRUE && !c->re)) {
- g_hash_table_insert(subject_table, c->root_subject, c);
- }
- }
- c = c->next;
- }
-
- /* merge common subjects? */
- clast = (CamelFolderThreadNode *)cp;
- while (clast->next) {
- c = clast->next;
- d(printf("checking %p %s\n", c, c->root_subject));
- if (c->root_subject
- && (container = g_hash_table_lookup(subject_table, c->root_subject))
- && (container != c)) {
- d(printf(" matching %p %s\n", container, container->root_subject));
- if (c->message == NULL && container->message == NULL) {
- d(printf("merge containers children\n"));
- /* steal the children from c onto container, and unlink c */
- scan = (CamelFolderThreadNode *)&container->child;
- while (scan->next)
- scan = scan->next;
- scan->next = c->child;
- clast->next = c->next;
- e_memchunk_free(thread->node_chunks, c);
- continue;
- } if (c->message == NULL && container->message != NULL) {
- d(printf("container is non-empty parent\n"));
- remove_node(cp, container, &clast);
- container_add_child(c, container);
- } else if (c->message != NULL && container->message == NULL) {
- d(printf("container is empty child\n"));
- clast->next = c->next;
- container_add_child(container, c);
- continue;
- } else if (c->re && !container->re) {
- d(printf("container is re\n"));
- clast->next = c->next;
- container_add_child(container, c);
- continue;
- } else if (!c->re && container->re) {
- d(printf("container is not re\n"));
- remove_node(cp, container, &clast);
- container_add_child(c, container);
- } else if (c->re && container->re) {
- d(printf("subjects are common %p and %p\n", c, container));
-
- /* build a phantom node */
- remove_node(cp, container, &clast);
- remove_node(cp, c, &clast);
-
- scan = e_memchunk_alloc0(thread->node_chunks);
-
- scan->root_subject = c->root_subject;
- scan->re = c->re && container->re;
- scan->next = c->next;
- clast->next = scan;
- container_add_child(scan, c);
- container_add_child(scan, container);
- clast = scan;
- g_hash_table_insert(subject_table, scan->root_subject, scan);
- continue;
- }
- }
- clast = c;
- }
- g_hash_table_destroy(subject_table);
-}
-
-struct _tree_info {
- GHashTable *visited;
-};
-
-static int
-dump_tree_rec(struct _tree_info *info, CamelFolderThreadNode *c, int depth)
-{
- char *p;
- int count=0;
-
- p = alloca(depth*2+1);
- memset(p, ' ', depth*2);
- p[depth*2] = 0;
-
- while (c) {
- if (g_hash_table_lookup(info->visited, c)) {
- printf("WARNING: NODE REVISITED: %p\n", c);
- } else {
- g_hash_table_insert(info->visited, c, c);
- }
- if (c->message) {
- printf("%s %p Subject: %s <%.8s>\n", p, c, camel_message_info_subject(c->message), c->message->message_id.id.hash);
- count += 1;
- } else {
- printf("%s %p <empty>\n", p, c);
- }
- if (c->child)
- count += dump_tree_rec(info, c->child, depth+1);
- c = c->next;
- }
- return count;
-}
-
-int
-camel_folder_threaded_messages_dump(CamelFolderThreadNode *c)
-{
- int count;
- struct _tree_info info;
-
- info.visited = g_hash_table_new(g_direct_hash, g_direct_equal);
- count = dump_tree_rec(&info, c, 0);
- g_hash_table_destroy(info.visited);
- return count;
-}
-
-static int
-sort_node(const void *a, const void *b)
-{
- const CamelFolderThreadNode *a1 = ((CamelFolderThreadNode **)a)[0];
- const CamelFolderThreadNode *b1 = ((CamelFolderThreadNode **)b)[0];
-
- /* if we have no message, it must be a dummy node, which
- also means it must have a child, just use that as the
- sort data (close enough?) */
- if (a1->message == NULL)
- a1 = a1->child;
- if (b1->message == NULL)
- b1 = b1->child;
- if (a1->order == b1->order)
- return 0;
- if (a1->order < b1->order)
- return -1;
- else
- return 1;
-}
-
-static void
-sort_thread(CamelFolderThreadNode **cp)
-{
- CamelFolderThreadNode *c, *head, **carray;
- int size=0;
-
- c = *cp;
- while (c) {
- /* sort the children while we're at it */
- if (c->child)
- sort_thread(&c->child);
- size++;
- c = c->next;
- }
- if (size<2)
- return;
- carray = alloca(size*sizeof(CamelFolderThreadNode *));
- c = *cp;
- size=0;
- while (c) {
- carray[size] = c;
- c = c->next;
- size++;
- }
- qsort(carray, size, sizeof(CamelFolderThreadNode *), sort_node);
- size--;
- head = carray[size];
- head->next = NULL;
- size--;
- do {
- c = carray[size];
- c->next = head;
- head = c;
- size--;
- } while (size>=0);
- *cp = head;
-}
-
-static guint id_hash(void *key)
-{
- CamelSummaryMessageID *id = (CamelSummaryMessageID *)key;
-
- return id->id.part.lo;
-}
-
-static gint id_equal(void *a, void *b)
-{
- return ((CamelSummaryMessageID *)a)->id.id == ((CamelSummaryMessageID *)b)->id.id;
-}
-
-/**
- * camel_folder_thread_messages_new:
- * @folder:
- * @uids: The subset of uid's to thread. If NULL. then thread all
- * uid's in @folder.
- *
- * Thread a (subset) of the messages in a folder. And sort the result
- * in summary order.
- *
- * Return value: A CamelFolderThread contianing a tree of CamelFolderThreadNode's
- * which represent the threaded structure of the messages.
- **/
-CamelFolderThread *
-camel_folder_thread_messages_new(CamelFolder *folder, GPtrArray *uids)
-{
- GHashTable *id_table, *no_id_table;
- int i;
- CamelFolderThreadNode *c, *child, *head;
- CamelFolderThread *thread;
- GHashTable *wanted = NULL;
- GPtrArray *summary;
-
-#ifdef TIMEIT
- struct timeval start, end;
- unsigned long diff;
-
- gettimeofday(&start, NULL);
-#endif
-
- thread = g_malloc(sizeof(*thread));
- thread->tree = NULL;
- thread->node_chunks = e_memchunk_new(32, sizeof(CamelFolderThreadNode));
- thread->folder = folder;
- camel_object_ref((CamelObject *)folder);
-
- /* wanted is the list of what we want, we put it in a hash for quick lookup */
- if (uids) {
- wanted = g_hash_table_new(g_str_hash, g_str_equal);
- for (i=0;i<uids->len;i++)
- g_hash_table_insert(wanted, uids->pdata[i], uids->pdata[i]);
- }
-
- thread->summary = summary = camel_folder_get_summary(folder);
-
- id_table = g_hash_table_new((GHashFunc)id_hash, (GCompareFunc)id_equal);
- no_id_table = g_hash_table_new(NULL, NULL);
- for (i=0;i<summary->len;i++) {
- CamelMessageInfo *mi = summary->pdata[i];
- const char *uid = camel_message_info_uid(mi);
-
- if (wanted && g_hash_table_lookup(wanted, uid) == 0)
- continue;
-
- if (mi->message_id.id.id) {
- c = g_hash_table_lookup(id_table, &mi->message_id);
- /* check for duplicate messages */
- if (c) {
- /* if duplicate, just make out it is a no-id message, but try and insert it
- into the right spot in the tree */
- d(printf("doing: (duplicate message id)\n"));
- c = e_memchunk_alloc0(thread->node_chunks);
- g_hash_table_insert(no_id_table, (void *)mi, c);
- } else {
- d(printf("doing : %08x%08x (%s)\n", mi->message_id.id.part.hi, mi->message_id.id.part.lo, camel_message_info_subject(mi)));
- c = e_memchunk_alloc0(thread->node_chunks);
- g_hash_table_insert(id_table, (void *)&mi->message_id, c);
- }
- } else {
- d(printf("doing : (no message id)\n"));
- c = e_memchunk_alloc0(thread->node_chunks);
- g_hash_table_insert(no_id_table, (void *)mi, c);
- }
-
- c->message = mi;
- c->order = i;
- child = c;
- if (mi->references) {
- int j;
-
- d(printf("references:\n"));
- for (j=0;j<mi->references->size;j++) {
- /* should never be empty, but just incase */
- if (mi->references->references[j].id.id == 0)
- continue;
-
- c = g_hash_table_lookup(id_table, &mi->references->references[j]);
- if (c == NULL) {
- d(printf("not found\n"));
- c = e_memchunk_alloc0(thread->node_chunks);
- g_hash_table_insert(id_table, &mi->references->references[j], c);
- }
- if (c!=child)
- container_parent_child(c, child);
- child = c;
- }
- }
- }
-
- d(printf("\n\n"));
- /* build a list of root messages (no parent) */
- head = NULL;
- g_hash_table_foreach(id_table, hashloop, &head);
- g_hash_table_foreach(no_id_table, hashloop, &head);
-
- g_hash_table_destroy(id_table);
- g_hash_table_destroy(no_id_table);
-
- /* remove empty parent nodes */
- prune_empty(thread, &head);
-
- /* find any siblings which missed out */
- group_root_set(thread, &head);
-
-#if 0
- printf("finished\n");
- i = camel_folder_thread_messages_dump(head);
- printf("%d count, %d items in tree\n", uids->len, i);
-#endif
-
- sort_thread(&head);
-
- /* remove any phantom nodes, this could possibly be put in group_root_set()? */
- c = (CamelFolderThreadNode *)&head;
- while (c && c->next) {
- CamelFolderThreadNode *scan, *newtop;
-
- child = c->next;
- if (child->message == NULL) {
- newtop = child->child;
- /* unlink pseudo node */
- c->next = newtop;
-
- /* link its siblings onto the end of its children */
- scan = (CamelFolderThreadNode *)&newtop->child;
- while (scan->next)
- scan = scan->next;
- scan->next = newtop->next;
- /* and link the now 'real' node into the list */
- newtop->next = child->next;
- c = newtop;
- e_memchunk_free(thread->node_chunks, child);
- } else {
- c = child;
- }
- }
-
- /* this is only debug assertion stuff */
- c = (CamelFolderThreadNode *)&head;
- while (c->next) {
- c = c->next;
- if (c->message == NULL)
- g_warning("threading missed removing a pseudo node: %s\n", c->root_subject);
- }
-
- thread->tree = head;
-
-#ifdef TIMEIT
- gettimeofday(&end, NULL);
- diff = end.tv_sec * 1000 + end.tv_usec/1000;
- diff -= start.tv_sec * 1000 + start.tv_usec/1000;
- printf("Message threading %d messages took %ld.%03ld seconds\n",
- uids->len, diff / 1000, diff % 1000);
-#endif
-
- return thread;
-}
-
-/**
- * camel_folder_thread_messages_destroy:
- * @thread:
- *
- * Free all memory associated with the thread descriptor @thread.
- **/
-void
-camel_folder_thread_messages_destroy(CamelFolderThread *thread)
-{
- camel_folder_free_summary(thread->folder, thread->summary);
- camel_object_unref((CamelObject *)thread->folder);
- e_memchunk_destroy(thread->node_chunks);
- g_free(thread);
-}
-
-#if 0
-/* intended for incremental update. Not implemented yet as, well, its probbaly
- not worth it (memory overhead vs speed, may as well just rethread the whole
- lot?)
-
- But it might be implemented at a later date.
-*/
-void
-camel_folder_thread_messages_add(CamelFolderThread *thread, CamelFolder *folder, GPtrArray *uids)
-{
-
-}
-
-void
-thread_messages_remove(CamelFolderThread *thread, CamelFolder *folder, GPtrArray *uids)
-{
-
-}
-#endif
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