/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*- */
/*
* Copyright (C) 2001 Ximian Inc.
*
* Authors: Michael Zucchi <notzed@ximian.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ctype.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "e-util/e-msgport.h"
#include "e-util/e-memory.h"
#include "camel/camel-object.h"
#include "camel-text-index.h"
#include "camel-block-file.h"
#include "camel-partition-table.h"
#include <gal/unicode/gunicode.h>
#include <stdio.h>
#define w(x)
#define io(x)
#define d(x) /*(printf("%s(%d):%s: ", __FILE__, __LINE__, __PRETTY_FUNCTION__),(x))*/
/* cursor debug */
#define c(x)
#ifdef ENABLE_THREADS
#define CAMEL_TEXT_INDEX_LOCK(kf, lock) (e_mutex_lock(((CamelTextIndex *)kf)->priv->lock))
#define CAMEL_TEXT_INDEX_UNLOCK(kf, lock) (e_mutex_unlock(((CamelTextIndex *)kf)->priv->lock))
#else
#define CAMEL_TEXT_INDEX_LOCK(kf, lock)
#define CAMEL_TEXT_INDEX_UNLOCK(kf, lock)
#endif
static int text_index_compress_nosync(CamelIndex *idx);
void camel_text_index_dump(CamelTextIndex *idx);
void camel_text_index_info(CamelTextIndex *idx);
void camel_text_index_validate(CamelTextIndex *idx);
/* ********************************************************************** */
/* "private" data, shared between index/cursor/name classes */
typedef struct _CamelTextIndexNamePrivate CamelTextIndexNamePrivate;
struct _CamelTextIndexNamePrivate {
GString *buffer;
camel_key_t nameid;
EMemPool *pool;
};
CamelTextIndexName *camel_text_index_name_new(CamelTextIndex *idx, const char *name, camel_key_t nameid);
/* ****************************** */
typedef struct _CamelTextIndexCursorPrivate CamelTextIndexCursorPrivate;
struct _CamelTextIndexCursorPrivate {
camel_block_t first;
camel_block_t next;
int record_index;
size_t record_count;
camel_key_t *records;
char *current;
};
CamelTextIndexCursor *camel_text_index_cursor_new(CamelTextIndex *idx, camel_block_t data);
/* ****************************** */
typedef struct _CamelTextIndexKeyCursorPrivate CamelTextIndexKeyCursorPrivate;
struct _CamelTextIndexKeyCursorPrivate {
CamelKeyTable *table;
camel_key_t keyid;
unsigned int flags;
camel_block_t data;
char *current;
};
CamelTextIndexKeyCursor *camel_text_index_key_cursor_new(CamelTextIndex *idx, CamelKeyTable *table);
/* ********************************************************************** */
#define CAMEL_TEXT_INDEX_VERSION "TEXT.000"
#define CAMEL_TEXT_INDEX_KEY_VERSION "KEYS.000"
struct _CamelTextIndexPrivate {
CamelBlockFile *blocks;
CamelKeyFile *links;
CamelKeyTable *word_index;
CamelPartitionTable *word_hash;
CamelKeyTable *name_index;
CamelPartitionTable *name_hash;
/* Cache of words to write */
int word_cache_limit;
int word_cache_count;
EDList word_cache;
GHashTable *words;
#ifdef ENABLE_THREADS
EMutex *lock;
#endif
};
/* Root block of text index */
struct _CamelTextIndexRoot {
struct _CamelBlockRoot root;
/* FIXME: the index root could contain a pointer to the hash root */
camel_block_t word_index_root; /* a keyindex containing the keyid -> word mapping */
camel_block_t word_hash_root; /* a partitionindex containing word -> keyid mapping */
camel_block_t name_index_root; /* same, for names */
camel_block_t name_hash_root;
guint32 words; /* total words */
guint32 names; /* total names */
guint32 deleted; /* deleted names */
guint32 keys; /* total key 'chunks' written, used with deleted to determine fragmentation */
};
struct _CamelTextIndexWord {
struct _CamelTextIndexWord *next;
struct _CamelTextIndexWord *prev;
camel_block_t data; /* where the data starts */
camel_key_t wordid;
char *word;
unsigned int used;
camel_key_t names[32];
};
#define CTI_PRIVATE(o) (((CamelTextIndex *)(o))->priv)
#define CI_CLASS(o) ((CamelTextIndexClass *)(((CamelObject *)o)->classfuncs))
/* ********************************************************************** */
/* CamelTextIndex */
/* ********************************************************************** */
static CamelObjectClass *camel_text_index_parent;
/* call locked */
static void
text_index_add_name_to_word(CamelIndex *idx, const char *word, camel_key_t nameid)
{
struct _CamelTextIndexWord *w, *wp, *ww;
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
camel_key_t wordid;
camel_block_t data;
struct _CamelTextIndexRoot *rb = (struct _CamelTextIndexRoot *)p->blocks->root;
w = g_hash_table_lookup(p->words, word);
if (w == NULL) {
wordid = camel_partition_table_lookup(p->word_hash, word);
if (wordid == 0) {
data = 0;
wordid = camel_key_table_add(p->word_index, word, 0, 0);
if (wordid == 0){
g_warning("Could not create key entry for word '%s': %s\n", word, strerror(errno));
return;
}
if (camel_partition_table_add(p->word_hash, word, wordid) == -1) {
g_warning("Could not create hash entry for word '%s': %s\n", word, strerror(errno));
return;
}
rb->words++;
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
} else {
data = camel_key_table_lookup(p->word_index, wordid, NULL, 0);
if (data == 0) {
g_warning("Could not find key entry for word '%s': %s\n", word, strerror(errno));
return;
}
}
w = g_malloc0(sizeof(*w));
w->word = g_strdup(word);
w->wordid = wordid;
w->used = 1;
w->data = data;
w->names[0] = nameid;
g_hash_table_insert(p->words, w->word, w);
e_dlist_addhead(&p->word_cache, (EDListNode *)w);
p->word_cache_count++;
ww = (struct _CamelTextIndexWord *)p->word_cache.tailpred;
wp = ww->prev;
while (wp && p->word_cache_count > p->word_cache_limit) {
io(printf("writing key file entry '%s' [%x]\n", ww->word, ww->data));
if (camel_key_file_write(p->links, &ww->data, ww->used, ww->names) != -1) {
io(printf(" new data [%x]\n", ww->data));
rb->keys++;
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
/* if this call fails - we still point to the old data - not fatal */
camel_key_table_set_data(p->word_index, ww->wordid, ww->data);
e_dlist_remove((EDListNode *)ww);
g_hash_table_remove(p->words, ww->word);
g_free(ww->word);
g_free(ww);
p->word_cache_count--;
}
ww = wp;
wp = wp->prev;
}
} else {
e_dlist_remove((EDListNode *)w);
e_dlist_addhead(&p->word_cache, (EDListNode *)w);
w->names[w->used] = nameid;
w->used++;
if (w->used == sizeof(w->names)/sizeof(w->names[0])) {
io(printf("writing key file entry '%s' [%x]\n", w->word, w->data));
if (camel_key_file_write(p->links, &w->data, w->used, w->names) != -1) {
rb->keys++;
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
/* if this call fails - we still point to the old data - not fatal */
camel_key_table_set_data(p->word_index, w->wordid, w->data);
}
/* FIXME: what to on error? lost data? */
w->used = 0;
}
}
}
static int
text_index_sync(CamelIndex *idx)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
struct _CamelTextIndexWord *ww;
struct _CamelTextIndexRoot *rb;
int ret = 0, wfrag, nfrag, work = FALSE;
if (p->blocks == NULL)
return 0;
rb = (struct _CamelTextIndexRoot *)p->blocks->root;
/* sync/flush word cache */
CAMEL_TEXT_INDEX_LOCK(idx, lock);
/* we sync, bump down the cache limits since we dont need them for reading */
p->blocks->block_cache_limit = 128;
/* this doesn't really need to be dropped, its only used in updates anyway */
p->word_cache_limit = 1024;
work = !e_dlist_empty(&p->word_cache);
while ( (ww = (struct _CamelTextIndexWord *)e_dlist_remhead(&p->word_cache)) ) {
if (ww->used > 0) {
io(printf("writing key file entry '%s' [%x]\n", ww->word, ww->data));
if (camel_key_file_write(p->links, &ww->data, ww->used, ww->names) != -1) {
io(printf(" new data [%x]\n", ww->data));
rb->keys++;
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
camel_key_table_set_data(p->word_index, ww->wordid, ww->data);
} else {
ret = -1;
}
ww->used = 0;
}
g_hash_table_remove(p->words, ww->word);
g_free(ww->word);
g_free(ww);
}
if (camel_key_table_sync(p->word_index) == -1
|| camel_key_table_sync(p->name_index) == -1
|| camel_partition_table_sync(p->word_hash) == -1
|| camel_partition_table_sync(p->name_hash) == -1)
ret = -1;
/* only do the frag/compress check if we did some new writes on this index */
if (ret == 0 && work) {
wfrag = rb->words ? (((rb->keys - rb->words) * 100)/ rb->words) : 0;
nfrag = rb->names ? ((rb->deleted * 100) / rb->names) : 0;
d(printf("wfrag = %d, nfrag = %d\n", wfrag, nfrag));
d(printf(" words = %d, keys = %d\n", rb->words, rb->keys));
if (wfrag > 30 || nfrag > 20)
ret = text_index_compress_nosync(idx);
}
ret = camel_block_file_sync(p->blocks);
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
return ret;
}
static void tmp_name(const char *in, char *o)
{
char *s;
s = strrchr(in, '/');
if (s) {
memcpy(o, in, s-in+1);
memcpy(o+(s-in+1), ".#", 2);
strcpy(o+(s-in+3), s+1);
} else {
sprintf(o, ".#%s", in);
}
}
static int
text_index_compress(CamelIndex *idx)
{
int ret;
CAMEL_TEXT_INDEX_LOCK(idx, lock);
ret = camel_index_sync(idx);
if (ret != -1)
ret = text_index_compress_nosync(idx);
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
return ret;
}
/* Attempt to recover index space by compressing the indices */
static int
text_index_compress_nosync(CamelIndex *idx)
{
CamelTextIndex *newidx;
struct _CamelTextIndexPrivate *newp, *oldp;
camel_key_t oldkeyid, newkeyid;
GHashTable *remap;
unsigned int deleted;
camel_block_t data, newdata;
int i, ret = -1;
char *name = NULL;
unsigned int flags;
char *newpath, *savepath, *oldpath;
size_t count, newcount;
camel_key_t *records, newrecords[256];
struct _CamelTextIndexRoot *rb;
newpath = alloca(strlen(idx->path)+5);
tmp_name(idx->path, newpath);
savepath = alloca(strlen(idx->path)+2);
sprintf(savepath, "%s~", idx->path);
oldpath = alloca(strlen(idx->path)+1);
strcpy(oldpath, idx->path);
newidx = camel_text_index_new(newpath, O_RDWR|O_CREAT);
if (newidx == NULL)
return -1;
newp = CTI_PRIVATE(newidx);
oldp = CTI_PRIVATE(idx);
CAMEL_TEXT_INDEX_LOCK(idx, lock);
rb = (struct _CamelTextIndexRoot *)newp->blocks->root;
rb->words = 0;
rb->names = 0;
rb->deleted = 0;
rb->keys = 0;
/* Process:
For each name we still have:
Add it to the new index & setup remap table
For each word:
Copy word's data to a new file
Add new word to index(*) (can we just copy blocks?) */
/* Copy undeleted names to new index file, creating new indices */
io(printf("Copying undeleted names to new file\n"));
remap = g_hash_table_new(NULL, NULL);
oldkeyid = 0;
deleted = 0;
while ( (oldkeyid = camel_key_table_next(oldp->name_index, oldkeyid, &name, &flags, &data)) ) {
if ((flags&1) == 0) {
io(printf("copying name '%s'\n", name));
newkeyid = camel_key_table_add(newp->name_index, name, data, flags);
if (newkeyid == 0)
goto fail;
rb->names++;
camel_partition_table_add(newp->name_hash, name, newkeyid);
g_hash_table_insert(remap, (void *)oldkeyid, (void *)newkeyid);
} else
io(printf("deleted name '%s'\n", name));
g_free(name);
name = NULL;
deleted |= flags;
}
/* Copy word data across, remapping/deleting and create new index for it */
/* We re-block the data into 256 entry lots while we're at it, since we only
have to do 1 at a time and its cheap */
oldkeyid = 0;
while ( (oldkeyid = camel_key_table_next(oldp->word_index, oldkeyid, &name, &flags, &data)) ) {
io(printf("copying word '%s'\n", name));
newdata = 0;
newcount = 0;
if (data) {
rb->words++;
rb->keys++;
}
while (data) {
if (camel_key_file_read(oldp->links, &data, &count, &records) == -1) {
io(printf("could not read from old keys at %d for word '%s'\n", (int)data, name));
goto fail;
}
for (i=0;i<count;i++) {
newkeyid = (camel_key_t)g_hash_table_lookup(remap, (void *)records[i]);
if (newkeyid) {
newrecords[newcount++] = newkeyid;
if (newcount == sizeof(newrecords)/sizeof(newrecords[0])) {
if (camel_key_file_write(newp->links, &newdata, newcount, newrecords) == -1) {
g_free(records);
goto fail;
}
newcount = 0;
}
}
}
g_free(records);
}
if (newcount > 0) {
if (camel_key_file_write(newp->links, &newdata, newcount, newrecords) == -1)
goto fail;
}
newkeyid = camel_key_table_add(newp->word_index, name, newdata, flags);
if (newkeyid == 0)
goto fail;
camel_partition_table_add(newp->word_hash, name, newkeyid);
g_free(name);
name = NULL;
}
camel_block_file_touch_block(newp->blocks, newp->blocks->root_block);
if (camel_index_sync((CamelIndex *)newidx) == -1)
goto fail;
/* Rename underlying files to match */
ret = camel_index_rename(idx, savepath);
if (ret == -1)
goto fail;
/* If this fails, we'll pick up something during restart? */
ret = camel_index_rename((CamelIndex *)newidx, oldpath);
#define myswap(a, b) { void *tmp = a; a = b; b = tmp; }
/* Poke the private data across to the new object */
/* And change the fd's over, etc? */
myswap(newp->blocks, oldp->blocks);
myswap(newp->links, oldp->links);
myswap(newp->word_index, oldp->word_index);
myswap(newp->word_hash, oldp->word_hash);
myswap(newp->name_index, oldp->name_index);
myswap(newp->name_hash, oldp->name_hash);
#undef myswap
ret = 0;
fail:
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
camel_object_unref((CamelObject *)newidx);
g_free(name);
g_hash_table_destroy(remap);
/* clean up temp files always */
camel_text_index_remove(newpath);
unlink(savepath);
newpath = alloca(strlen(savepath)+6);
sprintf(newpath, "%s.data", savepath);
unlink(newpath);
return ret;
}
static int
text_index_rename(CamelIndex *idx, const char *path)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
char *newlink, *newblock;
int err, ret;
CAMEL_TEXT_INDEX_LOCK(idx, lock);
newblock = alloca(strlen(path)+8);
sprintf(newblock, "%s.index", path);
ret = camel_block_file_rename(p->blocks, newblock);
if (ret == -1) {
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
return -1;
}
newlink = alloca(strlen(path)+16);
sprintf(newlink, "%s.index.data", path);
ret = camel_key_file_rename(p->links, newlink);
if (ret == -1) {
err = errno;
camel_block_file_rename(p->blocks, idx->path);
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
errno = err;
return -1;
}
g_free(idx->path);
idx->path = g_strdup(newblock);
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
return 0;
}
static int
text_index_has_name(CamelIndex *idx, const char *name)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
return camel_partition_table_lookup(p->name_hash, name) != 0;
}
static CamelIndexName *
text_index_add_name(CamelIndex *idx, const char *name)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
camel_key_t keyid;
CamelIndexName *idn;
struct _CamelTextIndexRoot *rb = (struct _CamelTextIndexRoot *)p->blocks->root;
CAMEL_TEXT_INDEX_LOCK(idx, lock);
/* if we're adding words, up the cache limits a lot */
if (p->blocks) {
p->blocks->block_cache_limit = 1024;
p->word_cache_limit = 8192;
}
/* If we have it already replace it */
keyid = camel_partition_table_lookup(p->name_hash, name);
if (keyid != 0) {
/* TODO: We could just update the partition table's
key pointer rather than having to delete it */
rb->deleted++;
camel_key_table_set_flags(p->name_index, keyid, 1, 1);
camel_partition_table_remove(p->name_hash, name);
}
keyid = camel_key_table_add(p->name_index, name, 0, 0);
if (keyid != 0) {
camel_partition_table_add(p->name_hash, name, keyid);
rb->names++;
}
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
/* TODO: if keyid == 0, we had a failure, we should somehow flag that, but for
now just return a valid object but discard its results, see text_index_write_name */
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
idn = (CamelIndexName *)camel_text_index_name_new((CamelTextIndex *)idx, name, keyid);
return idn;
}
/* call locked */
static void
hash_write_word(char *word, void *data, CamelIndexName *idn)
{
CamelTextIndexName *tin = (CamelTextIndexName *)idn;
text_index_add_name_to_word(idn->index, word, tin->priv->nameid);
}
static int
text_index_write_name(CamelIndex *idx, CamelIndexName *idn)
{
/* force 'flush' of any outstanding data */
camel_index_name_add_buffer(idn, NULL, 0);
/* see text_index_add_name for when this can be 0 */
if (((CamelTextIndexName *)idn)->priv->nameid != 0) {
CAMEL_TEXT_INDEX_LOCK(idx, lock);
g_hash_table_foreach(idn->words, (GHFunc)hash_write_word, idn);
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
}
return 0;
}
static CamelIndexCursor *
text_index_find_name(CamelIndex *idx, const char *name)
{
/* what was this for, umm */
return NULL;
}
static void
text_index_delete_name(CamelIndex *idx, const char *name)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
camel_key_t keyid;
struct _CamelTextIndexRoot *rb = (struct _CamelTextIndexRoot *)p->blocks->root;
/* probably doesn't really need locking, but oh well */
CAMEL_TEXT_INDEX_LOCK(idx, lock);
/* We just mark the key deleted, and remove it from the hash table */
keyid = camel_partition_table_lookup(p->name_hash, name);
if (keyid != 0) {
rb->deleted++;
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
camel_key_table_set_flags(p->name_index, keyid, 1, 1);
camel_partition_table_remove(p->name_hash, name);
}
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
}
static CamelIndexCursor *
text_index_find(CamelIndex *idx, const char *word)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
camel_key_t keyid;
camel_block_t data = 0;
unsigned int flags;
CamelIndexCursor *idc;
CAMEL_TEXT_INDEX_LOCK(idx, lock);
keyid = camel_partition_table_lookup(p->word_hash, word);
if (keyid != 0) {
data = camel_key_table_lookup(p->word_index, keyid, NULL, &flags);
if (flags & 1)
data = 0;
}
CAMEL_TEXT_INDEX_UNLOCK(idx, lock);
idc = (CamelIndexCursor *)camel_text_index_cursor_new((CamelTextIndex *)idx, data);
return idc;
}
static CamelIndexCursor *
text_index_words(CamelIndex *idx)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
return (CamelIndexCursor *)camel_text_index_key_cursor_new((CamelTextIndex *)idx, p->word_index);
}
static CamelIndexCursor *
text_index_names(CamelIndex *idx)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
return (CamelIndexCursor *)camel_text_index_key_cursor_new((CamelTextIndex *)idx, p->name_index);
}
static void
camel_text_index_class_init(CamelTextIndexClass *klass)
{
CamelIndexClass *iklass = (CamelIndexClass *)klass;
camel_text_index_parent = CAMEL_OBJECT_CLASS(camel_type_get_global_classfuncs(camel_object_get_type()));
iklass->sync = text_index_sync;
iklass->compress = text_index_compress;
iklass->rename = text_index_rename;
iklass->has_name = text_index_has_name;
iklass->add_name = text_index_add_name;
iklass->write_name = text_index_write_name;
iklass->find_name = text_index_find_name;
iklass->delete_name = text_index_delete_name;
iklass->find = text_index_find;
iklass->words = text_index_words;
iklass->names = text_index_names;
}
static void
camel_text_index_init(CamelTextIndex *idx)
{
struct _CamelTextIndexPrivate *p;
p = CTI_PRIVATE(idx) = g_malloc0(sizeof(*p));
e_dlist_init(&p->word_cache);
p->words = g_hash_table_new(g_str_hash, g_str_equal);
p->word_cache_count = 0;
/* this cache size and the block cache size have been tuned for about the best
with moderate memory usage. Doubling the memory usage barely affects performance. */
p->word_cache_limit = 4096; /* 1024 = 128K */
#ifdef ENABLE_THREADS
p->lock = e_mutex_new(E_MUTEX_REC);
#endif
}
static void
camel_text_index_finalise(CamelTextIndex *idx)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
camel_index_sync((CamelIndex *)idx);
g_assert(e_dlist_empty(&p->word_cache));
g_assert(g_hash_table_size(p->words) == 0);
g_hash_table_destroy(p->words);
if (p->word_index)
camel_object_unref((CamelObject *)p->word_index);
if (p->word_hash)
camel_object_unref((CamelObject *)p->word_hash);
if (p->name_index)
camel_object_unref((CamelObject *)p->name_index);
if (p->name_hash)
camel_object_unref((CamelObject *)p->name_hash);
if (p->blocks)
camel_object_unref((CamelObject *)p->blocks);
if (p->links)
camel_object_unref((CamelObject *)p->links);
#ifdef ENABLE_THREADS
e_mutex_destroy(p->lock);
#endif
g_free(p);
}
CamelType
camel_text_index_get_type(void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
type = camel_type_register(camel_object_get_type(), "CamelTextIndex",
sizeof (CamelTextIndex),
sizeof (CamelTextIndexClass),
(CamelObjectClassInitFunc) camel_text_index_class_init,
NULL,
(CamelObjectInitFunc) camel_text_index_init,
(CamelObjectFinalizeFunc) camel_text_index_finalise);
}
return type;
}
static char *
text_index_normalise(CamelIndex *idx, const char *in, void *data)
{
char *word;
/* Sigh, this is really expensive */
word = g_strdup(in); /*g_utf8_normalize(in, strlen(in), G_NORMALIZE_ALL);*/
g_utf8_strdown(word);
return word;
}
CamelTextIndex *
camel_text_index_new(const char *path, int flags)
{
CamelTextIndex *idx = (CamelTextIndex *)camel_object_new(camel_text_index_get_type());
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
struct _CamelTextIndexRoot *rb;
char *link;
CamelBlock *bl;
camel_index_construct((CamelIndex *)idx, path, flags);
camel_index_set_normalise((CamelIndex *)idx, text_index_normalise, NULL);
p->blocks = camel_block_file_new(idx->parent.path, flags, CAMEL_TEXT_INDEX_VERSION, CAMEL_BLOCK_SIZE);
link = alloca(strlen(idx->parent.path)+7);
sprintf(link, "%s.data", idx->parent.path);
p->links = camel_key_file_new(link, flags, CAMEL_TEXT_INDEX_KEY_VERSION);
if (p->blocks == NULL || p->links == NULL) {
camel_object_unref((CamelObject *)idx);
return NULL;
}
rb = (struct _CamelTextIndexRoot *)p->blocks->root;
if (rb->word_index_root == 0) {
bl = camel_block_file_new_block(p->blocks);
rb->word_index_root = bl->id;
camel_block_file_unref_block(p->blocks, bl);
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
}
if (rb->word_hash_root == 0) {
bl = camel_block_file_new_block(p->blocks);
rb->word_hash_root = bl->id;
camel_block_file_unref_block(p->blocks, bl);
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
}
if (rb->name_index_root == 0) {
bl = camel_block_file_new_block(p->blocks);
rb->name_index_root = bl->id;
camel_block_file_unref_block(p->blocks, bl);
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
}
if (rb->name_hash_root == 0) {
bl = camel_block_file_new_block(p->blocks);
rb->name_hash_root = bl->id;
camel_block_file_unref_block(p->blocks, bl);
camel_block_file_touch_block(p->blocks, p->blocks->root_block);
}
p->word_index = camel_key_table_new(p->blocks, rb->word_index_root);
p->word_hash = camel_partition_table_new(p->blocks, rb->word_hash_root);
p->name_index = camel_key_table_new(p->blocks, rb->name_index_root);
p->name_hash = camel_partition_table_new(p->blocks, rb->name_hash_root);
if (p->word_index == NULL || p->word_hash == NULL
|| p->name_index == NULL || p->name_hash == NULL) {
camel_object_unref((CamelObject *)idx);
idx = NULL;
}
return idx;
}
/* returns 0 if the index exists, is valid, and synced, -1 otherwise */
int
camel_text_index_check(const char *path)
{
char *block, *key;
CamelBlockFile *blocks;
CamelKeyFile *keys;
block = alloca(strlen(path)+7);
sprintf(block, "%s.index", path);
blocks = camel_block_file_new(block, O_RDONLY, CAMEL_TEXT_INDEX_VERSION, CAMEL_BLOCK_SIZE);
if (blocks == NULL) {
io(printf("Check failed: No block file: %s\n", strerror(errno)));
return -1;
}
key = alloca(strlen(path)+12);
sprintf(key, "%s.index.data", path);
keys = camel_key_file_new(key, O_RDONLY, CAMEL_TEXT_INDEX_KEY_VERSION);
if (keys == NULL) {
io(printf("Check failed: No key file: %s\n", strerror(errno)));
camel_object_unref((CamelObject *)blocks);
return -1;
}
camel_object_unref((CamelObject *)keys);
camel_object_unref((CamelObject *)blocks);
return 0;
}
int
camel_text_index_rename(const char *old, const char *new)
{
char *oldname, *newname;
int err;
/* TODO: camel_text_index_rename should find out if we have an active index and use that instead */
oldname = alloca(strlen(old)+12);
newname = alloca(strlen(new)+12);
sprintf(oldname, "%s.index", old);
sprintf(newname, "%s.index", new);
if (rename(oldname, newname) == -1 && errno != ENOENT)
return -1;
sprintf(oldname, "%s.index.data", old);
sprintf(newname, "%s.index.data", new);
if (rename(oldname, newname) == -1 && errno != ENOENT) {
err = errno;
sprintf(oldname, "%s.index", old);
sprintf(newname, "%s.index", new);
rename(newname, oldname);
errno = err;
return -1;
}
return 0;
}
int
camel_text_index_remove(const char *old)
{
char *block, *key;
int ret = 0;
/* TODO: needs to poke any active indices to remain unlinked */
block = alloca(strlen(old)+12);
key = alloca(strlen(old)+12);
sprintf(block, "%s.index", old);
sprintf(key, "%s.index.data", old);
if (unlink(block) == -1 && errno != ENOENT)
ret = -1;
if (unlink(key) == -1 && errno != ENOENT)
ret = -1;
return ret;
}
/* Debug */
void
camel_text_index_info(CamelTextIndex *idx)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
struct _CamelTextIndexRoot *rb = (struct _CamelTextIndexRoot *)p->blocks->root;
int frag;
printf("Path: '%s'\n", idx->parent.path);
printf("Version: %d\n", idx->parent.version);
printf("Flags: %08x\n", idx->parent.flags);
printf("Total words: %d\n", rb->words);
printf("Total names: %d\n", rb->names);
printf("Total deleted: %d\n", rb->deleted);
printf("Total key blocks: %d\n", rb->keys);
if (rb->words > 0) {
frag = ((rb->keys - rb->words) * 100)/ rb->words;
printf("Word fragmentation: %d%%\n", frag);
}
if (rb->names > 0) {
frag = (rb->deleted * 100)/ rb->names;
printf("Name fragmentation: %d%%\n", frag);
}
}
/* #define DUMP_RAW */
#ifdef DUMP_RAW
enum { KEY_ROOT = 1, KEY_DATA = 2, PARTITION_MAP = 4, PARTITION_DATA = 8 };
static void
add_type(GHashTable *map, camel_block_t id, int type)
{
camel_block_t old;
old = g_hash_table_lookup(map, id);
if (old == type)
return;
if (old != 0 && old != type)
g_warning("block %x redefined as type %d, already type %d\n", id, type, old);
g_hash_table_insert(map, id, type|old);
}
static void
add_partition(GHashTable *map, CamelBlockFile *blocks, camel_block_t id)
{
CamelBlock *bl;
CamelPartitionMapBlock *pm;
int i;
while (id) {
add_type(map, id, PARTITION_MAP);
bl = camel_block_file_get_block(blocks, id);
if (bl == NULL) {
g_warning("couldn't get parition: %x\n", id);
return;
}
pm = (CamelPartitionMapBlock *)&bl->data;
if (pm->used > sizeof(pm->partition)/sizeof(pm->partition[0])) {
g_warning("Partition block %x invalid\n", id);
camel_block_file_unref_block(blocks, bl);
return;
}
for (i=0;i<pm->used;i++)
add_type(map, pm->partition[i].blockid, PARTITION_DATA);
id = pm->next;
camel_block_file_unref_block(blocks, bl);
}
}
static void
add_keys(GHashTable *map, CamelBlockFile *blocks, camel_block_t id)
{
CamelBlock *rbl, *bl;
CamelKeyRootBlock *root;
CamelKeyBlock *kb;
add_type(map, id, KEY_ROOT);
rbl = camel_block_file_get_block(blocks, id);
if (rbl == NULL) {
g_warning("couldn't get key root: %x\n", id);
return;
}
root = (CamelKeyRootBlock *)&rbl->data;
id = root->first;
while (id) {
add_type(map, id, KEY_DATA);
bl = camel_block_file_get_block(blocks, id);
if (bl == NULL) {
g_warning("couldn't get key: %x\n", id);
break;
}
kb = (CamelKeyBlock *)&bl->data;
id = kb->next;
camel_block_file_unref_block(blocks, bl);
}
camel_block_file_unref_block(blocks, rbl);
}
static void
dump_raw(GHashTable *map, char *path)
{
char buf[1024];
char line[256];
char *p, c, *e, *a, *o;
int v, n, len, i, type;
char hex[16] = "0123456789ABCDEF";
int fd;
camel_block_t id, total;
fd = open(path, O_RDONLY);
if (fd == -1)
return;
total = 0;
while ((len = read(fd, buf, 1024)) == 1024) {
id = total;
type = g_hash_table_lookup(map, id);
switch(type) {
case 0:
printf(" - unknown -\n");
break;
default:
printf(" - invalid -\n");
break;
case KEY_ROOT: {
CamelKeyRootBlock *r = (CamelKeyRootBlock *)buf;
printf("Key root:\n");
printf("First: %08x Last: %08x Free: %08x\n", r->first, r->last, r->free);
} break;
case KEY_DATA: {
CamelKeyBlock *k = (CamelKeyBlock *)buf;
printf("Key data:\n");
printf("Next: %08x Used: %u\n", k->next, k->used);
for (i=0;i<k->used;i++) {
if (i == 0)
len = sizeof(k->u.keydata);
else
len = k->u.keys[i-1].offset;
len -= k->u.keys[i].offset;
printf("[%03d]: %08x %5d %06x %3d '%.*s'\n", i,
k->u.keys[i].data, k->u.keys[i].offset, k->u.keys[i].flags,
len, len, k->u.keydata+k->u.keys[i].offset);
}
} break;
case PARTITION_MAP: {
CamelPartitionMapBlock *m = (CamelPartitionMapBlock *)buf;
printf("Partition map\n");
printf("Next: %08x Used: %u\n", m->next, m->used);
for (i=0;i<m->used;i++) {
printf("[%03d]: %08x -> %08x\n", i, m->partition[i].hashid, m->partition[i].blockid);
}
} break;
case PARTITION_DATA: {
CamelPartitionKeyBlock *k = (CamelPartitionKeyBlock *)buf;
printf("Partition data\n");
printf("Used: %u\n", k->used);
} break;
}
printf("--raw--\n");
len = 1024;
p = buf;
do {
sprintf(line, "%08x: ", total);
total += 16;
o = line+10;
a = o+16*2+2;
i = 0;
while (len && i<16) {
c = *p++;
*a++ = isprint(c)?c:'.';
*o++ = hex[(c>>4)&0x0f];
*o++ = hex[c&0x0f];
i++;
if (i==8)
*o++ = ' ';
len--;
}
*a = 0;
printf("%s\n", line);
} while (len);
printf("\n");
}
}
#endif
/* Debug */
void
camel_text_index_dump(CamelTextIndex *idx)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
#ifndef DUMP_RAW
camel_key_t keyid;
char *word;
const char *name;
unsigned int flags;
camel_block_t data;
/* Iterate over all names in the file first */
printf("UID's in index\n");
keyid = 0;
while ( (keyid = camel_key_table_next(p->name_index, keyid, &word, &flags, &data)) ) {
if ((flags & 1) == 0)
printf(" %s\n", word);
else
printf(" %s (deleted)\n", word);
g_free(word);
}
printf("Word's in index\n");
keyid = 0;
while ( (keyid = camel_key_table_next(p->word_index, keyid, &word, &flags, &data)) ) {
CamelIndexCursor *idc;
printf("Word: '%s':\n", word);
idc = camel_index_find((CamelIndex *)idx, word);
while ( (name = camel_index_cursor_next(idc)) ) {
printf(" %s", name);
}
printf("\n");
camel_object_unref((CamelObject *)idc);
g_free(word);
}
#else
/* a more low-level dump routine */
GHashTable *block_type = g_hash_table_new(NULL, NULL);
camel_block_t id;
struct stat st;
int type;
add_keys(block_type, p->blocks, p->word_index->rootid);
add_keys(block_type, p->blocks, p->name_index->rootid);
add_partition(block_type, p->blocks, p->word_hash->rootid);
add_partition(block_type, p->blocks, p->name_hash->rootid);
dump_raw(block_type, p->blocks->path);
g_hash_table_destroy(block_type);
#endif
}
/* more debug stuff */
void
camel_text_index_validate(CamelTextIndex *idx)
{
struct _CamelTextIndexPrivate *p = CTI_PRIVATE(idx);
camel_key_t keyid;
char *word;
const char *name;
unsigned int flags;
camel_block_t data;
char *oldword;
camel_key_t *records;
size_t count;
GHashTable *names, *deleted, *words, *keys, *name_word, *word_word;
names = g_hash_table_new(NULL, NULL);
deleted = g_hash_table_new(NULL, NULL);
name_word = g_hash_table_new(g_str_hash, g_str_equal);
words = g_hash_table_new(NULL, NULL);
keys = g_hash_table_new(NULL, NULL);
word_word = g_hash_table_new(g_str_hash, g_str_equal);
/* Iterate over all names in the file first */
printf("Checking UID consistency\n");
keyid = 0;
while ( (keyid = camel_key_table_next(p->name_index, keyid, &word, &flags, &data)) ) {
if ((oldword = g_hash_table_lookup(names, (void *)keyid)) != NULL
|| (oldword = g_hash_table_lookup(deleted, (void *)keyid)) != NULL) {
printf("Warning, name '%s' duplicates key (%x) with name '%s'\n", word, keyid, oldword);
g_free(word);
} else {
g_hash_table_insert(name_word, word, (void *)1);
if ((flags & 1) == 0) {
g_hash_table_insert(names, (void *)keyid, word);
} else {
g_hash_table_insert(deleted, (void *)keyid, word);
}
}
}
printf("Checking WORD member consistency\n");
keyid = 0;
while ( (keyid = camel_key_table_next(p->word_index, keyid, &word, &flags, &data)) ) {
CamelIndexCursor *idc;
GHashTable *used;
/* first, check for duplicates of keyid, and data */
if ((oldword = g_hash_table_lookup(words, (void *)keyid)) != NULL) {
printf("Warning, word '%s' duplicates key (%x) with name '%s'\n", word, keyid, oldword);
g_free(word);
word = oldword;
} else {
g_hash_table_insert(words, (void *)keyid, word);
}
if (data == 0) {
/* This may not be an issue if things have been removed over time,
though it is a problem if its a fresh index */
printf("Word '%s' has no data associated with it\n", word);
} else {
if ((oldword = g_hash_table_lookup(keys, (void *)data)) != NULL) {
printf("Warning, word '%s' duplicates data (%x) with name '%s'\n", word, data, oldword);
} else {
g_hash_table_insert(keys, (void *)data, word);
}
}
if ((oldword = g_hash_table_lookup(word_word, word)) != NULL) {
printf("Warning, word '%s' occurs more than once\n", word);
} else {
g_hash_table_insert(word_word, word, word);
}
used = g_hash_table_new(g_str_hash, g_str_equal);
idc = camel_index_find((CamelIndex *)idx, word);
while ( (name = camel_index_cursor_next(idc)) ) {
if (g_hash_table_lookup(name_word, name) == NULL) {
printf("word '%s' references non-existant name '%s'\n", word, name);
}
if (g_hash_table_lookup(used, name) != NULL) {
printf("word '%s' uses word '%s' more than once\n", word, name);
} else {
g_hash_table_insert(used, g_strdup(name), (void *)1);
}
}
camel_object_unref((CamelObject *)idc);
g_hash_table_foreach(used, (GHFunc)g_free, NULL);
g_hash_table_destroy(used);
printf("word '%s'\n", word);
while (data) {
printf(" data %x ", data);
if (camel_key_file_read(p->links, &data, &count, &records) == -1) {
printf("Warning, read failed for word '%s', at data '%d'\n", word, data);
data = 0;
} else {
printf("(%d)\n", count);
g_free(records);
}
}
}
g_hash_table_destroy(names);
g_hash_table_destroy(deleted);
g_hash_table_destroy(words);
g_hash_table_destroy(keys);
g_hash_table_foreach(name_word, (GHFunc)g_free, NULL);
g_hash_table_destroy(name_word);
g_hash_table_foreach(word_word, (GHFunc)g_free, NULL);
g_hash_table_destroy(word_word);
}
/* ********************************************************************** */
/* CamelTextIndexName */
/* ********************************************************************** */
static CamelIndexNameClass *camel_text_index_name_parent;
#define CIN_CLASS(o) ((CamelTextIndexNameClass *)(((CamelObject *)o)->classfuncs))
#define CIN_PRIVATE(o) (((CamelTextIndexName *)(o))->priv)
static void
text_index_name_add_word(CamelIndexName *idn, const char *word)
{
struct _CamelTextIndexNamePrivate *p = ((CamelTextIndexName *)idn)->priv;
if (g_hash_table_lookup(idn->words, word) == NULL) {
char *w = e_mempool_strdup(p->pool, word);
g_hash_table_insert(idn->words, w, w);
}
}
/* Why?
Because it doesn't hang/loop forever on bad data
Used to clean up utf8 before it gets further */
static __inline__ guint32
camel_utf8_next(const unsigned char **ptr, const unsigned char *ptrend)
{
register unsigned char *p = (unsigned char *)*ptr;
register unsigned int c;
register guint32 v;
int l;
if (p == ptrend)
return 0;
while ( (c = *p++) ) {
if (c < 0x80) {
*ptr = p;
return c;
} else if ((c&0xe0) == 0xc0) {
v = c & 0x1f;
l = 1;
} else if ((c&0xf0) == 0xe0) {
v = c & 0x0f;
l = 2;
} else if ((c&0xf8) == 0xf0) {
v = c & 0x07;
l = 3;
} else if ((c&0xfc) == 0xf8) {
v = c & 0x03;
l = 4;
} else if ((c&0xfe) == 0xfc) {
v = c & 0x01;
l = 5;
} else
/* Invalid, ignore and look for next start char if room */
if (p == ptrend) {
return 0;
} else {
continue;
}
/* bad data or truncated buffer */
if (p + l > ptrend)
return 0;
while (l && ((c = *p) & 0xc0) == 0x80) {
p++;
l--;
v = (v << 6) | (c & 0x3f);
}
/* valid char */
if (l == 0) {
*ptr = p;
return v;
}
/* else look for a start char again */
}
return 0;
}
static size_t
text_index_name_add_buffer(CamelIndexName *idn, const char *buffer, size_t len)
{
CamelTextIndexNamePrivate *p = CIN_PRIVATE(idn);
const unsigned char *ptr, *ptrend;
guint32 c;
unsigned char utf8[8];
size_t utf8len;
if (buffer == NULL) {
if (p->buffer->len) {
camel_index_name_add_word(idn, p->buffer->str);
g_string_truncate(p->buffer, 0);
}
return 0;
}
ptr = buffer;
ptrend = buffer+len;
while ((c = camel_utf8_next(&ptr, ptrend))) {
if (g_unichar_isalnum(c)) {
c = g_unichar_tolower(c);
utf8len = g_unichar_to_utf8(c, utf8);
utf8[utf8len] = 0;
g_string_append(p->buffer, utf8);
} else {
if (p->buffer->len) {
text_index_name_add_word(idn, p->buffer->str);
/*camel_index_name_add_word(idn, p->buffer->str);*/
g_string_truncate(p->buffer, 0);
}
}
}
return 0;
}
static void
camel_text_index_name_class_init(CamelTextIndexNameClass *klass)
{
CamelIndexNameClass *nklass = (CamelIndexNameClass *)klass;
camel_text_index_name_parent = CAMEL_INDEX_NAME_CLASS(camel_type_get_global_classfuncs(camel_index_name_get_type()));
nklass->add_word = text_index_name_add_word;
nklass->add_buffer = text_index_name_add_buffer;
}
static void
camel_text_index_name_init(CamelTextIndexName *idn)
{
CamelTextIndexNamePrivate *p;
idn->parent.words = g_hash_table_new(g_str_hash, g_str_equal);
p = idn->priv = g_malloc0(sizeof(*idn->priv));
p->buffer = g_string_new("");
p->pool = e_mempool_new(256, 128, E_MEMPOOL_ALIGN_BYTE);
}
static void
camel_text_index_name_finalise(CamelTextIndexName *idn)
{
CamelTextIndexNamePrivate *p = CIN_PRIVATE(idn);
g_hash_table_destroy(idn->parent.words);
g_string_free(p->buffer, TRUE);
e_mempool_destroy(p->pool);
g_free(p);
}
CamelType
camel_text_index_name_get_type(void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
type = camel_type_register(camel_object_get_type(), "CamelTextIndexName",
sizeof (CamelTextIndexName),
sizeof (CamelTextIndexNameClass),
(CamelObjectClassInitFunc) camel_text_index_name_class_init,
NULL,
(CamelObjectInitFunc) camel_text_index_name_init,
(CamelObjectFinalizeFunc) camel_text_index_name_finalise);
}
return type;
}
CamelTextIndexName *
camel_text_index_name_new(CamelTextIndex *idx, const char *name, camel_key_t nameid)
{
CamelTextIndexName *idn = (CamelTextIndexName *)camel_object_new(camel_text_index_name_get_type());
CamelIndexName *cin = &idn->parent;
CamelTextIndexNamePrivate *p = CIN_PRIVATE(idn);
cin->index = (CamelIndex *)idx;
camel_object_ref((CamelObject *)idx);
cin->name = g_strdup(name);
p->nameid = nameid;
return idn;
}
/* ********************************************************************** */
/* CamelTextIndexCursor */
/* ********************************************************************** */
static CamelIndexCursorClass *camel_text_index_cursor_parent;
#define CIC_CLASS(o) ((CamelTextIndexCursorClass *)(((CamelObject *)o)->classfuncs))
#define CIC_PRIVATE(o) (((CamelTextIndexCursor *)(o))->priv)
static const char *
text_index_cursor_next(CamelIndexCursor *idc)
{
struct _CamelTextIndexCursorPrivate *p = CIC_PRIVATE(idc);
struct _CamelTextIndexPrivate *tip = CTI_PRIVATE(idc->index);
unsigned int flags;
c(printf("Going to next cursor for word with data '%08x' next %08x\n", p->first, p->next));
do {
while (p->record_index >= p->record_count) {
g_free(p->records);
p->records = NULL;
p->record_index = 0;
p->record_count = 0;
if (p->next == 0)
return NULL;
if (camel_key_file_read(tip->links, &p->next, &p->record_count, &p->records) == -1)
return NULL;
}
g_free(p->current);
camel_key_table_lookup(tip->name_index, p->records[p->record_index], &p->current, &flags);
if (flags & 1) {
g_free(p->current);
p->current = NULL;
}
p->record_index++;
} while (p->current == NULL);
return p->current;
}
static void
text_index_cursor_reset(CamelIndexCursor *idc)
{
struct _CamelTextIndexCursorPrivate *p = CIC_PRIVATE(idc);
g_free(p->records);
p->records = NULL;
g_free(p->current);
p->current = NULL;
p->record_count = 0;
p->record_index = 0;
p->next = p->first;
}
static void
camel_text_index_cursor_class_init(CamelTextIndexCursorClass *klass)
{
CamelIndexCursorClass *cklass = (CamelIndexCursorClass *)klass;
camel_text_index_cursor_parent = CAMEL_INDEX_CURSOR_CLASS(camel_type_get_global_classfuncs(camel_index_cursor_get_type()));
cklass->next = text_index_cursor_next;
cklass->reset = text_index_cursor_reset;
}
static void
camel_text_index_cursor_init(CamelTextIndexCursor *idc)
{
CIC_PRIVATE(idc) = g_malloc0(sizeof(struct _CamelTextIndexCursorPrivate));
}
static void
camel_text_index_cursor_finalise(CamelTextIndexCursor *idc)
{
struct _CamelTextIndexCursorPrivate *p = CIC_PRIVATE(idc);
g_free(p->records);
g_free(p->current);
g_free(p);
}
CamelType
camel_text_index_cursor_get_type(void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
type = camel_type_register(camel_object_get_type(), "CamelTextIndexCursor",
sizeof (CamelTextIndexCursor),
sizeof (CamelTextIndexCursorClass),
(CamelObjectClassInitFunc) camel_text_index_cursor_class_init,
NULL,
(CamelObjectInitFunc) camel_text_index_cursor_init,
(CamelObjectFinalizeFunc) camel_text_index_cursor_finalise);
}
return type;
}
CamelTextIndexCursor *
camel_text_index_cursor_new(CamelTextIndex *idx, camel_block_t data)
{
CamelTextIndexCursor *idc = (CamelTextIndexCursor *)camel_object_new(camel_text_index_cursor_get_type());
CamelIndexCursor *cic = &idc->parent;
struct _CamelTextIndexCursorPrivate *p = CIC_PRIVATE(idc);
cic->index = (CamelIndex *)idx;
camel_object_ref((CamelObject *)idx);
p->first = data;
p->next = data;
p->record_count = 0;
p->record_index = 0;
return idc;
}
/* ********************************************************************** */
/* CamelTextIndexKeyCursor */
/* ********************************************************************** */
static CamelIndexCursorClass *camel_text_index_key_cursor_parent;
#define CIKC_CLASS(o) ((CamelTextIndexKeyCursorClass *)(((CamelObject *)o)->classfuncs))
#define CIKC_PRIVATE(o) (((CamelTextIndexKeyCursor *)(o))->priv)
static const char *
text_index_key_cursor_next(CamelIndexCursor *idc)
{
struct _CamelTextIndexKeyCursorPrivate *p = CIKC_PRIVATE(idc);
c(printf("Going to next cursor for keyid %08x\n", p->keyid));
g_free(p->current);
p->current = NULL;
while ( (p->keyid = camel_key_table_next(p->table, p->keyid, &p->current, &p->flags, &p->data)) ) {
if ((p->flags & 1) == 0) {
return p->current;
} else {
g_free(p->current);
p->current = NULL;
}
}
return NULL;
}
static void
text_index_key_cursor_reset(CamelIndexCursor *idc)
{
struct _CamelTextIndexKeyCursorPrivate *p = CIKC_PRIVATE(idc);
p->keyid = 0;
p->flags = 0;
p->data = 0;
g_free(p->current);
p->current = NULL;
}
static void
camel_text_index_key_cursor_class_init(CamelTextIndexKeyCursorClass *klass)
{
CamelIndexCursorClass *cklass = (CamelIndexCursorClass *)klass;
camel_text_index_key_cursor_parent = CAMEL_INDEX_CURSOR_CLASS(camel_type_get_global_classfuncs(camel_index_cursor_get_type()));
cklass->next = text_index_key_cursor_next;
cklass->reset = text_index_key_cursor_reset;
}
static void
camel_text_index_key_cursor_init(CamelTextIndexKeyCursor *idc)
{
struct _CamelTextIndexKeyCursorPrivate *p;
p = idc->priv = g_malloc0(sizeof(struct _CamelTextIndexKeyCursorPrivate));
p->keyid = 0;
p->flags = 0;
p->data = 0;
p->current = NULL;
}
static void
camel_text_index_key_cursor_finalise(CamelTextIndexKeyCursor *idc)
{
struct _CamelTextIndexKeyCursorPrivate *p = CIKC_PRIVATE(idc);
g_free(p->current);
if (p->table)
camel_object_unref((CamelObject *)p->table);
g_free(p);
}
CamelType
camel_text_index_key_cursor_get_type(void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
type = camel_type_register(camel_object_get_type(), "CamelTextIndexKeyCursor",
sizeof (CamelTextIndexKeyCursor),
sizeof (CamelTextIndexKeyCursorClass),
(CamelObjectClassInitFunc) camel_text_index_key_cursor_class_init,
NULL,
(CamelObjectInitFunc) camel_text_index_key_cursor_init,
(CamelObjectFinalizeFunc) camel_text_index_key_cursor_finalise);
}
return type;
}
CamelTextIndexKeyCursor *
camel_text_index_key_cursor_new(CamelTextIndex *idx, CamelKeyTable *table)
{
CamelTextIndexKeyCursor *idc = (CamelTextIndexKeyCursor *)camel_object_new(camel_text_index_key_cursor_get_type());
CamelIndexCursor *cic = &idc->parent;
struct _CamelTextIndexKeyCursorPrivate *p = CIKC_PRIVATE(idc);
cic->index = (CamelIndex *)idx;
camel_object_ref((CamelObject *)idx);
p->table = table;
camel_object_ref((CamelObject *)table);
return idc;
}
/* ********************************************************************** */
#define m(x)
#if 0
struct _CamelIndexRoot {
struct _CamelBlockRoot root;
camel_block_t word_root; /* a keyindex containing the keyid -> word mapping */
camel_block_t word_hash_root; /* a partitionindex containing word -> keyid mapping */
camel_block_t name_root; /* same, for names */
camel_block_t name_hash_root;
};
char wordbuffer[] = "This is a buffer of multiple words. Some of the words are duplicates"
" while other words are the same, some are in difFerenT Different different case cAsE casE,"
" with,with:with;with-with'with\"'\"various punctuation as well. So much for those Words. and 10"
" numbers in a row too 1,2,3,4,5,6,7,8,9,10! Yay!.";
int main(int argc, char **argv)
{
#if 0
CamelBlockFile *bs;
CamelKeyTable *ki;
CamelPartitionTable *cpi;
CamelBlock *keyroot, *partroot;
struct _CamelIndexRoot *root;
FILE *fp;
char line[256], *key;
camel_key_t keyid;
int index = 0, flags, data;
#endif
CamelIndex *idx;
CamelIndexName *idn;
CamelIndexCursor *idc;
const char *word;
int i;
printf("Camel text index tester!\n");
g_thread_init(NULL);
camel_init(NULL, 0);
idx = (CamelIndex *)camel_text_index_new("textindex", O_CREAT|O_RDWR|O_TRUNC);
#if 1
camel_index_compress(idx);
return 0;
#endif
for (i=0;i<100;i++) {
char name[16];
sprintf(name, "%d", i);
printf("Adding words to name '%s'\n", name);
idn = camel_index_add_name(idx, name);
camel_index_name_add_buffer(idn, wordbuffer, sizeof(wordbuffer)-1);
camel_index_write_name(idx, idn);
camel_object_unref((CamelObject *)idn);
}
printf("Looking up which names contain word 'word'\n");
idc = camel_index_find(idx, "words");
while ( (word = camel_index_cursor_next(idc)) != NULL ) {
printf(" name is '%s'\n", word);
}
camel_object_unref((CamelObject *)idc);
printf("done.\n");
printf("Looking up which names contain word 'truncate'\n");
idc = camel_index_find(idx, "truncate");
while ( (word = camel_index_cursor_next(idc)) != NULL ) {
printf(" name is '%s'\n", word);
}
camel_object_unref((CamelObject *)idc);
printf("done.\n");
camel_index_sync(idx);
camel_object_unref((CamelObject *)idx);
#if 0
bs = camel_block_file_new("blocks", "TESTINDX", CAMEL_BLOCK_SIZE);
root = (struct _CamelIndexRoot *)bs->root;
if (root->word_root == 0) {
keyroot = camel_block_file_new_block(bs);
root->word_root = keyroot->id;
camel_block_file_touch_block(bs, bs->root_block);
}
if (root->word_hash_root == 0) {
partroot = camel_block_file_new_block(bs);
root->word_hash_root = partroot->id;
camel_block_file_touch_block(bs, bs->root_block);
}
ki = camel_key_table_new(bs, root->word_root);
cpi = camel_partition_table_new(bs, root->word_hash_root);
fp = fopen("/usr/dict/words", "r");
if (fp == NULL) {
perror("fopen");
return 1;
}
while (fgets(line, sizeof(line), fp) != NULL) {
line[strlen(line)-1] = 0;
/* see if its already there */
keyid = camel_partition_table_lookup(cpi, line);
if (keyid == 0) {
m(printf("Adding word '%s' %d\n", line, index));
keyid = camel_key_table_add(ki, line, index, 0);
m(printf(" key = %08x\n", keyid));
camel_partition_table_add(cpi, line, keyid);
m(printf("Lookup word '%s'\n", line));
keyid = camel_partition_table_lookup(cpi, line);
m(printf(" key = %08x\n", keyid));
}
m(printf("Lookup key %08x\n", keyid));
camel_key_table_set_flags(ki, keyid, index, 1);
data = camel_key_table_lookup(ki, keyid, &key, &flags);
m(printf(" word = '%s' %d %04x\n", key, data, flags));
g_assert(data == index && strcmp(key, line) == 0);
g_free(key);
index++;
}
printf("Scanning again\n");
fseek(fp, SEEK_SET, 0);
index = 0;
while (fgets(line, sizeof(line), fp) != NULL) {
line[strlen(line)-1] = 0;
m(printf("Lookup word '%s' %d\n", line, index));
keyid = camel_partition_table_lookup(cpi, line);
m(printf(" key = %08d\n", keyid));
m(printf("Lookup key %08x\n", keyid));
data = camel_key_table_lookup(ki, keyid, &key, &flags);
m(printf(" word = '%s' %d\n", key, data));
g_assert(data == index && strcmp(key, line) == 0);
g_free(key);
index++;
}
printf("Freeing partition index\n");
camel_partition_table_free(cpi);
printf("Syncing block file\n");
camel_block_file_sync(bs);
#endif
return 0;
}
#endif
