* Sebastian Hammer, Adam Dickmeiss
*
* $Log: extract.c,v $
- * Revision 1.6 1995-09-08 14:52:27 adam
+ * 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
+ * Bug fixes. Field prefix used in queries.
+ *
+ * Revision 1.10 1995/09/28 09:19:41 adam
+ * xfree/xmalloc used everywhere.
+ * Extract/retrieve method seems to work for text records.
+ *
+ * Revision 1.9 1995/09/27 12:22:28 adam
+ * More work on extract in record control.
+ * Field name is not in isam keys but in prefix in dictionary words.
+ *
+ * Revision 1.8 1995/09/14 07:48:22 adam
+ * Record control management.
+ *
+ * Revision 1.7 1995/09/11 13:09:32 adam
+ * More work on relevance feedback.
+ *
+ * Revision 1.6 1995/09/08 14:52:27 adam
* Minor changes. Dictionary is lower case now.
*
* Revision 1.5 1995/09/06 16:11:16 adam
#include <ctype.h>
#include <alexutil.h>
+#include <recctrl.h>
#include "index.h"
-#define KEY_BUF_SIZE 100000
-
static Dict file_idx;
static SYSNO sysno_next;
-static int key_fd = -1;
static int sys_idx_fd = -1;
-static char *key_buf;
-static int key_offset;
-void key_open (const char *fname)
+static int key_cmd;
+static int key_sysno;
+static char **key_buf;
+static size_t ptr_top;
+static size_t ptr_i;
+static size_t kused;
+static int key_file_no;
+
+void key_open (int mem)
{
void *file_key;
- if (key_fd != -1)
- return;
- if ((key_fd = open (fname, O_RDWR|O_CREAT, 0666)) == -1)
- {
- logf (LOG_FATAL|LOG_ERRNO, "open %s", fname);
- exit (1);
- }
- logf (LOG_DEBUG, "key_open of %s", fname);
- if (!(key_buf = malloc (KEY_BUF_SIZE)))
- {
- logf (LOG_FATAL|LOG_ERRNO, "malloc");
- exit (1);
- }
- key_offset = 0;
+
+ if (mem < 50000)
+ mem = 50000;
+ key_buf = xmalloc (mem);
+ ptr_top = mem/sizeof(char*);
+ ptr_i = 0;
+ kused = 0;
+ key_file_no = 0;
+
if (!(file_idx = dict_open (FNAME_FILE_DICT, 40, 1)))
{
logf (LOG_FATAL, "dict_open fail of %s", "fileidx");
exit (1);
}
}
-
-int key_close (void)
-{
- if (key_fd == -1)
- {
- logf (LOG_DEBUG, "key_close - but no file");
- return 0;
- }
- close (key_fd);
- close (sys_idx_fd);
- dict_insert (file_idx, ".", sizeof(sysno_next), &sysno_next);
- dict_close (file_idx);
- key_fd = -1;
- logf (LOG_DEBUG, "key close - key file exist");
- return 1;
-}
-
+
void key_flush (void)
{
- size_t i = 0;
- int w;
+ FILE *outf;
+ char out_fname[200];
+ char *prevcp, *cp;
+
+ 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*), key_qsort_compare);
+ sprintf (out_fname, TEMP_FNAME, key_file_no);
- if (key_fd == -1)
- return;
- while (i < key_offset)
+ if (!(outf = fopen (out_fname, "w")))
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "fopen (4) %s", out_fname);
+ exit (1);
+ }
+ 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)
{
- w = write (key_fd, key_buf + i, key_offset - i);
- if (w == -1)
+ logf (LOG_FATAL|LOG_ERRNO, "fwrite %s", out_fname);
+ exit (1);
+ }
+ 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);
+ }
+ prevcp = cp;
+ }
+ else
{
- logf (LOG_FATAL|LOG_ERRNO, "Write key fail");
- exit (1);
+ 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);
+ }
}
- i += w;
}
- key_offset = 0;
-}
-
-void key_write (int cmd, struct it_key *k, const char *str)
-{
- char x;
- size_t slen = strlen(str);
-
- if (key_offset + sizeof(*k) + slen >= KEY_BUF_SIZE - 2)
- key_flush ();
- x = (cmd == 'a') ? 1 : 0;
- memcpy (key_buf + key_offset, str, slen+1);
- key_offset += slen+1;
- memcpy (key_buf + key_offset, &x, 1);
- key_offset++;
- memcpy (key_buf + key_offset, k, sizeof(*k));
- key_offset += sizeof(*k);
+ if (fclose (outf))
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "fclose %s", out_fname);
+ exit (1);
+ }
+ logf (LOG_LOG, "finished section %d", key_file_no);
+ ptr_i = 0;
+ kused = 0;
}
-void key_write_x (struct strtab *t, int cmd, struct it_key *k, const char *str)
+int key_close (void)
{
- void **oldinfo;
-
- if (strtab_src (t, str, &oldinfo))
- ((struct it_key *) *oldinfo)->seqno++;
- else
- {
- *oldinfo = xmalloc (sizeof(*k));
- memcpy (*oldinfo, k, sizeof(*k));
- ((struct it_key *) *oldinfo)->seqno = 1;
- }
+ key_flush ();
+ xfree (key_buf);
+ close (sys_idx_fd);
+ dict_insert (file_idx, ".", sizeof(sysno_next), &sysno_next);
+ dict_close (file_idx);
+ return key_file_no;
}
-void key_rec_flush (const char *str, void *info, void *data)
+static void wordInit (RecWord *p)
{
- key_write (*((int*) data), (struct it_key *)info, str);
- xfree (info);
+ p->attrSet = 1;
+ p->attrUse = 1016;
+ p->which = Word_String;
}
-void text_extract (struct strtab *t, SYSNO sysno, int cmd, const char *fname)
+static void wordAdd (const RecWord *p)
{
- FILE *inf;
- struct it_key k;
- int seqno = 1;
- int c;
- char w[IT_MAX_WORD];
+ struct it_key key;
+ size_t i;
- logf (LOG_DEBUG, "Text extract of %d", sysno);
- k.sysno = sysno;
- inf = fopen (fname, "r");
- if (!inf)
- {
- logf (LOG_WARN|LOG_ERRNO, "open %s", fname);
- return;
- }
- while ((c=getc (inf)) != EOF)
+ if (kused + 1024 > (ptr_top-ptr_i)*sizeof(char*))
+ key_flush ();
+ ++ptr_i;
+ key_buf[ptr_top-ptr_i] = (char*)key_buf + kused;
+ kused += index_word_prefix ((char*)key_buf + kused,
+ p->attrSet, p->attrUse);
+ switch (p->which)
{
- int i = 0;
- while (i < 254 && c != EOF && isalnum(c))
- {
- w[i++] = index_char_cvt (c);
- c = getc (inf);
- }
- if (i)
- {
- w[i] = 0;
-
- k.seqno = seqno++;
-#if IT_KEY_HAVE_FIELD
- k.field = 0;
-#endif
- key_write_x (t, cmd, &k, w);
- }
- if (c == EOF)
- break;
+ case Word_String:
+ for (i = 0; p->u.string[i]; i++)
+ ((char*)key_buf) [kused++] = index_char_cvt (p->u.string[i]);
+ ((char*)key_buf) [kused++] = '\0';
+ break;
+ default:
+ return ;
}
- fclose (inf);
+ ((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);
}
void file_extract (int cmd, const char *fname, const char *kname)
char ext_res[128];
const char *file_type;
void *file_info;
- struct strtab *t;
+ FILE *inf;
+ struct recExtractCtrl extractCtrl;
+ RecType rt;
logf (LOG_DEBUG, "%c %s k=%s", cmd, fname, kname);
for (i = strlen(fname); --i >= 0; )
sprintf (ext_res, "fileExtension.%s", ext);
if (!(file_type = res_get (common_resource, ext_res)))
return;
-
+ if (!(rt = recType_byName (file_type)))
+ return;
file_info = dict_lookup (file_idx, kname);
if (!file_info)
{
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);
}
else
memcpy (&sysno, (char*) file_info+1, sizeof(sysno));
- t = strtab_mk ();
- if (!strcmp (file_type, "text"))
- text_extract (t, sysno, cmd, fname);
- strtab_del (t, key_rec_flush, &cmd);
-}
-
+ if (!(inf = fopen (fname, "r")))
+ {
+ logf (LOG_WARN|LOG_ERRNO, "open %s", fname);
+ return;
+ }
+ extractCtrl.inf = inf;
+ extractCtrl.subType = "";
+ extractCtrl.init = wordInit;
+ extractCtrl.add = wordAdd;
+ key_sysno = sysno;
+ key_cmd = cmd;
+ (*rt->extract)(&extractCtrl);
+ fclose (inf);
+}
projects / idzebra-moved-to-github.git / blobdiff