* Sebastian Hammer, Adam Dickmeiss
*
* $Log: extract.c,v $
- * Revision 1.12 1995-09-28 14:22:56 adam
+ * Revision 1.25 1995-11-16 15:34:54 adam
+ * Uses new record management system in both indexer and server.
+ *
+ * Revision 1.24 1995/11/15 19:13:08 adam
+ * Work on record management.
+ *
+ * Revision 1.23 1995/10/27 14:00:10 adam
+ * Implemented detection of database availability.
+ *
+ * Revision 1.22 1995/10/17 18:02:07 adam
+ * New feature: databases. Implemented as prefix to words in dictionary.
+ *
+ * Revision 1.21 1995/10/10 12:24:38 adam
+ * Temporary sort files are compressed.
+ *
+ * Revision 1.20 1995/10/06 13:52:05 adam
+ * Bug fixes. Handler may abort further scanning.
+ *
+ * Revision 1.19 1995/10/04 12:55:16 adam
+ * Bug fix in ranked search. Use=Any keys inserted.
+ *
+ * Revision 1.18 1995/10/04 09:37:08 quinn
+ * Fixed bug.
+ *
+ * Revision 1.17 1995/10/03 14:28:57 adam
+ * Buffered read in extract works.
+ *
+ * Revision 1.16 1995/10/03 14:28:45 adam
+ * Work on more effecient read handler in extract.
+ *
+ * Revision 1.15 1995/10/02 15:42:53 adam
+ * Extract uses file descriptors instead of FILE pointers.
+ *
+ * Revision 1.14 1995/10/02 15:29:13 adam
+ * More logging in file_extract.
+ *
+ * Revision 1.13 1995/09/29 14:01:39 adam
+ * Bug fixes.
+ *
+ * Revision 1.12 1995/09/28 14:22:56 adam
* Sort uses smaller temporary files.
*
* Revision 1.11 1995/09/28 12:10:31 adam
#include <recctrl.h>
#include "index.h"
+#if RECORD_BASE
+#include "recindex.h"
+#endif
+
static Dict file_idx;
-static SYSNO sysno_next;
+
+
+#if RECORD_BASE
+static Records records = NULL;
+#else
static int sys_idx_fd = -1;
+static SYSNO sysno_next;
+#endif
static int key_cmd;
static int key_sysno;
+static char *key_databaseName;
static char **key_buf;
static size_t ptr_top;
static size_t ptr_i;
static size_t kused;
static int key_file_no;
-static int sort_compare (const void *p1, const void *p2)
-{
- int r;
- size_t l;
- char *cp1 = *(char**) p1;
- char *cp2 = *(char**) p2;
-
- if ((r = strcmp (cp1, cp2)))
- return r;
- l = strlen(cp1);
- if ((r = key_compare (cp1+l, cp2+l)))
- return r;
- return cp1[l+sizeof(struct it_key)] -
- cp2[l+sizeof(struct it_key)];
-}
-
void key_open (int mem)
{
+#if !RECORD_BASE
void *file_key;
-
+#endif
if (mem < 50000)
mem = 50000;
key_buf = xmalloc (mem);
logf (LOG_FATAL, "dict_open fail of %s", "fileidx");
exit (1);
}
+#if RECORD_BASE
+ assert (!records);
+ records = rec_open (1);
+#else
file_key = dict_lookup (file_idx, ".");
if (file_key)
memcpy (&sysno_next, (char*)file_key+1, sizeof(sysno_next));
logf (LOG_FATAL|LOG_ERRNO, "open %s", FNAME_SYS_IDX);
exit (1);
}
+#endif
}
-
+
+struct encode_info {
+ int sysno;
+ int seqno;
+ char buf[512];
+};
+
+void encode_key_init (struct encode_info *i)
+{
+ i->sysno = 0;
+ i->seqno = 0;
+}
+
+char *encode_key_int (int d, char *bp)
+{
+ if (d <= 63)
+ *bp++ = d;
+ else if (d <= 16383)
+ {
+ *bp++ = 64 + (d>>8);
+ *bp++ = d & 255;
+ }
+ else if (d <= 4194303)
+ {
+ *bp++ = 128 + (d>>16);
+ *bp++ = (d>>8) & 255;
+ *bp++ = d & 255;
+ }
+ else
+ {
+ *bp++ = 192 + (d>>24);
+ *bp++ = (d>>16) & 255;
+ *bp++ = (d>>8) & 255;
+ *bp++ = d & 255;
+ }
+ return bp;
+}
+
+void encode_key_write (char *k, struct encode_info *i, FILE *outf)
+{
+ struct it_key key;
+ char *bp = i->buf;
+
+ while ((*bp++ = *k++))
+ ;
+ memcpy (&key, k+1, sizeof(struct it_key));
+ bp = encode_key_int ( (key.sysno - i->sysno) * 2 + *k, bp);
+ if (i->sysno != key.sysno)
+ {
+ i->sysno = key.sysno;
+ i->seqno = 0;
+ }
+ bp = encode_key_int (key.seqno - i->seqno, bp);
+ i->seqno = key.seqno;
+ if (fwrite (i->buf, bp - i->buf, 1, outf) != 1)
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "fwrite");
+ exit (1);
+ }
+}
+
void key_flush (void)
{
FILE *outf;
char out_fname[200];
char *prevcp, *cp;
+ struct encode_info encode_info;
if (ptr_i <= 0)
return;
key_file_no++;
logf (LOG_LOG, "sorting section %d", key_file_no);
- qsort (key_buf + ptr_top-ptr_i, ptr_i, sizeof(char*), sort_compare);
+ qsort (key_buf + ptr_top-ptr_i, ptr_i, sizeof(char*), key_qsort_compare);
sprintf (out_fname, TEMP_FNAME, key_file_no);
-
if (!(outf = fopen (out_fname, "w")))
{
logf (LOG_FATAL|LOG_ERRNO, "fopen (4) %s", out_fname);
logf (LOG_LOG, "writing section %d", key_file_no);
prevcp = cp = key_buf[ptr_top-ptr_i];
- if (fwrite (cp, strlen (cp)+2+sizeof(struct it_key), 1, outf) != 1)
- {
- logf (LOG_FATAL|LOG_ERRNO, "fwrite %s", out_fname);
- exit (1);
- }
+ encode_key_init (&encode_info);
+ encode_key_write (cp, &encode_info, outf);
while (--ptr_i > 0)
{
cp = key_buf[ptr_top-ptr_i];
if (strcmp (cp, prevcp))
{
- if (fwrite (cp, strlen (cp)+2+sizeof(struct it_key), 1,
- outf) != 1)
- {
- logf (LOG_FATAL|LOG_ERRNO, "fwrite %s", out_fname);
- exit (1);
- }
+ encode_key_init (&encode_info);
+ encode_key_write (cp, &encode_info, outf);
prevcp = cp;
}
else
- {
- cp = strlen (cp) + cp;
- if (fwrite (cp, 2+sizeof(struct it_key), 1, outf) != 1)
- {
- logf (LOG_FATAL|LOG_ERRNO, "fwrite %s", out_fname);
- exit (1);
- }
- }
+ encode_key_write (cp + strlen(cp), &encode_info, outf);
}
if (fclose (outf))
{
{
key_flush ();
xfree (key_buf);
+#if RECORD_BASE
+ rec_close (&records);
+#else
close (sys_idx_fd);
dict_insert (file_idx, ".", sizeof(sysno_next), &sysno_next);
+#endif
dict_close (file_idx);
return key_file_no;
}
++ptr_i;
key_buf[ptr_top-ptr_i] = (char*)key_buf + kused;
kused += index_word_prefix ((char*)key_buf + kused,
- p->attrSet, p->attrUse);
+ p->attrSet, p->attrUse,
+ key_databaseName);
switch (p->which)
{
case Word_String:
default:
return ;
}
+ ((char*) key_buf)[kused++] = ((key_cmd == 'a') ? 1 : 0);
key.sysno = key_sysno;
key.seqno = p->seqno;
memcpy ((char*)key_buf + kused, &key, sizeof(key));
kused += sizeof(key);
+}
- ((char*) key_buf)[kused++] = ((key_cmd == 'a') ? 1 : 0);
+static void wordAddAny (const RecWord *p)
+{
+ if (p->attrSet != 1 || p->attrUse != 1016)
+ {
+ RecWord w;
+
+ memcpy (&w, p, sizeof(w));
+ w.attrSet = 1;
+ w.attrUse = 1016;
+ wordAdd (&w);
+ }
+ wordAdd (p);
+}
+
+
+#define FILE_READ_BUF 1
+#if FILE_READ_BUF
+static char *file_buf;
+static int file_offset;
+static int file_bufsize;
+
+static void file_read_start (int fd)
+{
+ file_offset = 0;
+ file_buf = xmalloc (4096);
+ file_bufsize = read (fd, file_buf, 4096);
}
-void file_extract (int cmd, const char *fname, const char *kname)
+static void file_read_stop (int fd)
{
- int i;
+ xfree (file_buf);
+}
+
+static int file_read (int fd, char *buf, size_t count)
+{
+ int l = file_bufsize - file_offset;
+
+ if (count > l)
+ {
+ int r;
+ if (l > 0)
+ memcpy (buf, file_buf + file_offset, l);
+ count = count-l;
+ if (count > file_bufsize)
+ {
+ if ((r = read (fd, buf + l, count)) == -1)
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "read");
+ exit (1);
+ }
+ file_bufsize = 0;
+ file_offset = 0;
+ return r;
+ }
+ file_bufsize = r = read (fd, file_buf, 4096);
+ if (r == -1)
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "read");
+ exit (1);
+ }
+ else if (r <= count)
+ {
+ file_offset = r;
+ memcpy (buf + l, file_buf, r);
+ return l + r;
+ }
+ else
+ {
+ file_offset = count;
+ memcpy (buf + l, file_buf, count - l);
+ return count;
+ }
+ }
+ memcpy (buf, file_buf + file_offset, count);
+ file_offset += count;
+ return count;
+}
+#else
+static int file_read (int fd, char *buf, size_t count)
+{
+ return read (fd, buf, count);
+}
+#endif
+void file_extract (int cmd, const char *fname, const char *kname,
+ char *databaseName)
+{
+ int i, r;
char ext[128];
SYSNO sysno;
char ext_res[128];
const char *file_type;
void *file_info;
- FILE *inf;
struct recExtractCtrl extractCtrl;
RecType rt;
- logf (LOG_DEBUG, "%c %s k=%s", cmd, fname, kname);
+ key_databaseName = databaseName;
for (i = strlen(fname); --i >= 0; )
if (fname[i] == '/')
{
return;
if (!(rt = recType_byName (file_type)))
return;
+ logf (LOG_DEBUG, "%c %s k=%s", cmd, fname, kname);
file_info = dict_lookup (file_idx, kname);
if (!file_info)
{
+#if RECORD_BASE
+ Record rec = rec_new (records);
+
+ sysno = rec->sysno;
+ dict_insert (file_idx, kname, sizeof(sysno), &sysno);
+ rec->info[0] = rec_strdup (file_type);
+ rec->info[1] = rec_strdup (kname);
+ rec_put (records, rec);
+ rec_rm (rec);
+#else
sysno = sysno_next++;
dict_insert (file_idx, kname, sizeof(sysno), &sysno);
lseek (sys_idx_fd, sysno * SYS_IDX_ENTRY_LEN, SEEK_SET);
write (sys_idx_fd, file_type, strlen (file_type)+1);
write (sys_idx_fd, kname, strlen(kname)+1);
+#endif
}
else
memcpy (&sysno, (char*) file_info+1, sizeof(sysno));
- if (!(inf = fopen (fname, "r")))
+ if ((extractCtrl.fd = open (fname, O_RDONLY)) == -1)
{
logf (LOG_WARN|LOG_ERRNO, "open %s", fname);
return;
}
- extractCtrl.inf = inf;
extractCtrl.subType = "";
extractCtrl.init = wordInit;
- extractCtrl.add = wordAdd;
+ extractCtrl.add = wordAddAny;
+#if FILE_READ_BUF
+ file_read_start (extractCtrl.fd);
+#endif
+ extractCtrl.readf = file_read;
key_sysno = sysno;
key_cmd = cmd;
- (*rt->extract)(&extractCtrl);
- fclose (inf);
+ r = (*rt->extract)(&extractCtrl);
+#if FILE_READ_BUF
+ file_read_stop (extractCtrl.fd);
+#endif
+ close (extractCtrl.fd);
+ if (r)
+ logf (LOG_WARN, "Couldn't extract file %s, code %d", fname, r);
}
projects / idzebra-moved-to-github.git / blobdiff