/*
- * Copyright (C) 1994-1995, Index Data I/S
+ * Copyright (C) 1994-1999, Index Data
* All rights reserved.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: dirs.c,v $
- * Revision 1.1 1995-11-17 15:54:42 adam
- * Started work on virtual directory structure.
+ * Revision 1.15 1999-02-02 14:50:51 adam
+ * Updated WIN32 code specific sections. Changed header.
+ *
+ * Revision 1.14 1998/01/12 15:04:07 adam
+ * The test option (-s) only uses read-lock (and not write lock).
+ *
+ * Revision 1.13 1997/09/09 13:38:06 adam
+ * Partial port to WIN95/NT.
+ *
+ * Revision 1.12 1996/11/08 11:10:13 adam
+ * Buffers used during file match got bigger.
+ * Compressed ISAM support everywhere.
+ * Bug fixes regarding masking characters in queries.
+ * Redesigned Regexp-2 queries.
*
- * Revision 1.9 1995/10/30 13:42:12 adam
- * Added errno.h
+ * Revision 1.11 1996/10/29 14:06:47 adam
+ * Include zebrautl.h instead of alexutil.h.
*
- * Revision 1.8 1995/10/10 13:59:23 adam
- * Function rset_open changed its wflag parameter to general flags.
+ * Revision 1.10 1996/06/04 10:18:58 adam
+ * Minor changes - removed include of ctype.h.
*
- * Revision 1.7 1995/09/28 09:19:40 adam
- * xfree/xmalloc used everywhere.
- * Extract/retrieve method seems to work for text records.
+ * Revision 1.9 1996/04/23 12:39:07 adam
+ * Bug fix: In function dirs_del dict_delete is used to remove a file
+ * rather than a bogus dict_insert.
*
- * Revision 1.6 1995/09/08 14:52:26 adam
- * Minor changes. Dictionary is lower case now.
+ * Revision 1.8 1996/04/12 07:02:21 adam
+ * File update of single files.
*
- * Revision 1.5 1995/09/06 16:11:16 adam
- * Option: only one word key per file.
+ * Revision 1.7 1996/03/21 14:50:09 adam
+ * File update uses modify-time instead of change-time.
*
- * Revision 1.4 1995/09/04 12:33:41 adam
- * Various cleanup. YAZ util used instead.
+ * Revision 1.6 1996/02/02 13:44:43 adam
+ * The public dictionary functions simply use char instead of Dict_char
+ * to represent search strings. Dict_char is used internally only.
*
- * Revision 1.3 1995/09/01 14:06:35 adam
- * Split of work into more files.
+ * Revision 1.5 1996/01/17 14:54:44 adam
+ * Function dirs_rmdir uses dict_delete.
*
- * Revision 1.2 1995/09/01 10:57:07 adam
- * Minor changes.
+ * Revision 1.4 1995/11/30 08:34:27 adam
+ * Started work on commit facility.
+ * Changed a few malloc/free to xmalloc/xfree.
*
- * Revision 1.1 1995/09/01 10:34:51 adam
- * Added dir.c
+ * Revision 1.3 1995/11/20 16:59:45 adam
+ * New update method: the 'old' keys are saved for each records.
*
+ * Revision 1.2 1995/11/20 11:56:23 adam
+ * Work on new traversal.
+ *
+ * Revision 1.1 1995/11/17 15:54:42 adam
+ * Started work on virtual directory structure.
*/
#include <stdio.h>
+#include <string.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
-#include <ctype.h>
-#include <alexutil.h>
#include "index.h"
-struct dirs_entry {
- char path[160];
- int sysno;
-};
+#define DIRS_MAX_PATH 1024
struct dirs_info {
- int no;
- struct dirs_entry *entries;
-};
-
-struct dirs_client_info {
- struct dirs_info *di;
+ Dict dict;
+ int rw;
+ int no_read;
+ int no_cur;
int no_max;
- char *prefix;
+ struct dirs_entry *entries;
+ char nextpath[DIRS_MAX_PATH];
+ char prefix[DIRS_MAX_PATH];
int prelen;
+ struct dirs_entry *last_entry;
};
-static int dirs_client_proc (Dict_char *name, const char *info, int pos,
+static int dirs_client_proc (char *name, const char *info, int pos,
void *client)
{
- struct dirs_client_info *ci = client;
+ struct dirs_info *ci = client;
+ struct dirs_entry *entry;
if (memcmp (name, ci->prefix, ci->prelen))
return 1;
- if (ci->di->no == ci->no_max)
+ if (ci->no_cur < 0)
+ {
+ ci->no_cur = 0;
+ return 0;
+ }
+ if (ci->no_cur == ci->no_max)
{
- if (ci->no_max > 0)
- {
- struct dirs_entry *arn;
-
- ci->no_max += 1000;
- arn = malloc (sizeof(*arn) * (ci->no_max));
- if (!arn)
- {
- logf (LOG_FATAL|LOG_ERRNO, "malloc");
- exit (1);
- }
- memcpy (arn, ci->di->entries, ci->di->no * sizeof(*arn));
- free (ci->di->entries);
- ci->di->entries = arn;
- }
+ assert (0);
+ }
+ entry = ci->entries + ci->no_cur;
+ if (info[0] == sizeof(entry->sysno)+sizeof(entry->mtime))
+ {
+ strcpy (entry->path, name + ci->prelen);
+ entry->kind = dirs_file;
+ memcpy (&entry->sysno, info+1, sizeof(entry->sysno));
+ memcpy (&entry->mtime, info+1+sizeof(entry->sysno),
+ sizeof(entry->mtime));
+ ci->no_cur++;
+ }
+ else if (info[0] == sizeof(entry->mtime))
+ {
+ strcpy (entry->path, name + ci->prelen);
+ entry->kind = dirs_dir;
+ memcpy (&entry->mtime, info+1, sizeof(entry->mtime));
+ ci->no_cur++;
}
- strcpy ((ci->di->entries + ci->di->no)->path, name);
- memcpy (&(ci->di->entries + ci->di->no)->sysno, info+1, *info);
- assert (*info == sizeof(ci->di->entries->sysno));
- ++(ci->di->no);
return 0;
}
-struct dirs_info *dirs_open (Dict dict, const char *rep)
+struct dirs_info *dirs_open (Dict dict, const char *rep, int rw)
+{
+ struct dirs_info *p;
+ int before = 0, after;
+
+ logf (LOG_DEBUG, "dirs_open %s", rep);
+ p = xmalloc (sizeof (*p));
+ p->dict = dict;
+ p->rw = rw;
+ strcpy (p->prefix, rep);
+ p->prelen = strlen(p->prefix);
+ strcpy (p->nextpath, rep);
+ p->no_read = p->no_cur = 0;
+ after = p->no_max = 100;
+ p->entries = xmalloc (sizeof(*p->entries) * (p->no_max));
+ logf (LOG_DEBUG, "dirs_open first scan");
+ dict_scan (p->dict, p->nextpath, &before, &after, p, dirs_client_proc);
+ return p;
+}
+
+struct dirs_info *dirs_fopen (Dict dict, const char *path)
{
- static char wname[200];
- static char pname[200];
- int dirid;
- char *dinfo;
- struct dirs_client_info dirs_client_info;
struct dirs_info *p;
- int before, after;
+ struct dirs_entry *entry;
+ char *info;
- sprintf (wname, "d%s", rep);
- dinfo = dict_lookup (dict, wname);
- if (!dinfo)
- return NULL;
- if (!(p = malloc (sizeof (*p))))
+ p = xmalloc (sizeof(*p));
+ p->dict = dict;
+ *p->prefix = '\0';
+ p->entries = xmalloc (sizeof(*p->entries));
+ p->no_read = 0;
+ p->no_cur = 0;
+ p->no_max = 2;
+
+ entry = p->entries;
+ info = dict_lookup (dict, path);
+ if (info && info[0] == sizeof(entry->sysno)+sizeof(entry->mtime))
{
- logf (LOG_FATAL|LOG_ERRNO, "malloc");
- exit (1);
+ strcpy (entry->path, path);
+ entry->kind = dirs_file;
+ memcpy (&entry->sysno, info+1, sizeof(entry->sysno));
+ memcpy (&entry->mtime, info+1+sizeof(entry->sysno),
+ sizeof(entry->mtime));
+ p->no_cur++;
}
- memcpy (&dirid, dinfo+1, sizeof(dirid));
- sprintf (wname, "%d.", dirid);
- strcpy (pname, wname);
-
- p->no = 0;
- dirs_client_info.di = p;
- dirs_client_info.no_max = 0;
- dirs_client_info.prefix = wname;
- dirs_client_info.prelen = strlen(wname);
- strcpy (pname, wname);
- dict_scan (dict, pname, &before, &after, &dirs_client_info,
- dirs_client_proc);
-
return p;
}
+struct dirs_entry *dirs_read (struct dirs_info *p)
+{
+ int before = 0, after = p->no_max+1;
+
+ if (p->no_read < p->no_cur)
+ {
+ logf (LOG_DEBUG, "dirs_read %d. returns %s", p->no_read,
+ (p->entries + p->no_read)->path);
+ return p->last_entry = p->entries + (p->no_read++);
+ }
+ if (p->no_cur < p->no_max)
+ return p->last_entry = NULL;
+ p->no_cur = -1;
+ logf (LOG_DEBUG, "dirs_read rescan");
+ dict_scan (p->dict, p->nextpath, &before, &after, p, dirs_client_proc);
+ p->no_read = 1;
+ if (p->no_read < p->no_cur)
+ return p->last_entry = p->entries;
+ return p->last_entry = NULL;
+}
+
+struct dirs_entry *dirs_last (struct dirs_info *p)
+{
+ return p->last_entry;
+}
+
+void dirs_mkdir (struct dirs_info *p, const char *src, time_t mtime)
+{
+ char path[DIRS_MAX_PATH];
+
+ sprintf (path, "%s%s", p->prefix, src);
+ logf (LOG_DEBUG, "dirs_mkdir %s", path);
+ if (p->rw)
+ dict_insert (p->dict, path, sizeof(mtime), &mtime);
+}
+
+void dirs_rmdir (struct dirs_info *p, const char *src)
+{
+ char path[DIRS_MAX_PATH];
+
+ sprintf (path, "%s%s", p->prefix, src);
+ logf (LOG_DEBUG, "dirs_rmdir %s", path);
+ if (p->rw)
+ dict_delete (p->dict, path);
+}
+
+void dirs_add (struct dirs_info *p, const char *src, int sysno, time_t mtime)
+{
+ char path[DIRS_MAX_PATH];
+ char info[16];
+
+ sprintf (path, "%s%s", p->prefix, src);
+ logf (LOG_DEBUG, "dirs_add %s", path);
+ memcpy (info, &sysno, sizeof(sysno));
+ memcpy (info+sizeof(sysno), &mtime, sizeof(mtime));
+ if (p->rw)
+ dict_insert (p->dict, path, sizeof(sysno)+sizeof(mtime), info);
+}
+
+void dirs_del (struct dirs_info *p, const char *src)
+{
+ char path[DIRS_MAX_PATH];
+
+ sprintf (path, "%s%s", p->prefix, src);
+ logf (LOG_DEBUG, "dirs_del %s", path);
+ if (p->rw)
+ dict_delete (p->dict, path);
+}
+
void dirs_free (struct dirs_info **pp)
{
struct dirs_info *p = *pp;
- free (p->entries);
- free (p);
+ xfree (p->entries);
+ xfree (p);
*pp = NULL;
}
+
projects / idzebra-moved-to-github.git / blobdiff