-/*
- * Copyright (C) 1994-1995, Index Data I/S
- * 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 1.9 1995/10/30 13:42:12 adam
- * Added errno.h
- *
- * Revision 1.8 1995/10/10 13:59:23 adam
- * Function rset_open changed its wflag parameter to general flags.
- *
- * Revision 1.7 1995/09/28 09:19:40 adam
- * xfree/xmalloc used everywhere.
- * Extract/retrieve method seems to work for text records.
- *
- * Revision 1.6 1995/09/08 14:52:26 adam
- * Minor changes. Dictionary is lower case now.
- *
- * Revision 1.5 1995/09/06 16:11:16 adam
- * Option: only one word key per file.
- *
- * Revision 1.4 1995/09/04 12:33:41 adam
- * Various cleanup. YAZ util used instead.
- *
- * Revision 1.3 1995/09/01 14:06:35 adam
- * Split of work into more files.
- *
- * Revision 1.2 1995/09/01 10:57:07 adam
- * Minor changes.
- *
- * Revision 1.1 1995/09/01 10:34:51 adam
- * Added dir.c
- *
- */
+/* This file is part of the Zebra server.
+ Copyright (C) 2004-2013 Index Data
+
+Zebra 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, or (at your option) any later
+version.
+
+Zebra 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+*/
+
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
#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;
+ int nextpath_deleted;
};
-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 = (struct dirs_info *) client;
+ struct dirs_entry *entry;
- if (memcmp (name, ci->prefix, ci->prelen))
+ 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;
+ }
+ assert(ci->no_cur < ci->no_max);
+ entry = ci->entries + ci->no_cur;
+ if (info[0] == sizeof(entry->sysno)+sizeof(entry->mtime))
{
- 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;
- }
+ 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;
+
+ yaz_log(YLOG_DEBUG, "dirs_open %s", rep);
+ p = (struct dirs_info *) xmalloc(sizeof(*p));
+ p->dict = dict;
+ p->rw = rw;
+ strcpy(p->prefix, rep);
+ p->prelen = strlen(p->prefix);
+ strcpy(p->nextpath, rep);
+ p->nextpath_deleted = 0;
+ p->no_read = p->no_cur = 0;
+ after = p->no_max = 100;
+ p->entries = (struct dirs_entry *)
+ xmalloc(sizeof(*p->entries) * (p->no_max));
+ yaz_log(YLOG_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, int rw)
{
- 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 = (struct dirs_info *) xmalloc(sizeof(*p));
+ p->dict = dict;
+ p->rw = rw;
+ *p->prefix = '\0';
+ p->entries = (struct dirs_entry *) 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;
}
-void dirs_free (struct dirs_info **pp)
+struct dirs_entry *dirs_read(struct dirs_info *p)
+{
+ int before = 0, after = p->no_max+1;
+
+ if (p->no_read < p->no_cur)
+ {
+ yaz_log(YLOG_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;
+ if (p->nextpath_deleted)
+ {
+ p->no_cur = 0;
+ after = p->no_max;
+ }
+ else
+ {
+ p->no_cur = -1;
+ after = p->no_max + 1;
+ }
+ p->no_read = 1;
+ p->nextpath_deleted = 0;
+ yaz_log(YLOG_DEBUG, "dirs_read rescan %s", p->nextpath);
+ dict_scan(p->dict, p->nextpath, &before, &after, p, dirs_client_proc);
+ 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);
+ yaz_log(YLOG_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);
+ yaz_log(YLOG_DEBUG, "dirs_rmdir %s", path);
+ if (p->rw)
+ dict_delete(p->dict, path);
+}
+
+void dirs_add(struct dirs_info *p, const char *src, zint sysno, time_t mtime)
+{
+ char path[DIRS_MAX_PATH];
+ char info[16];
+
+ sprintf(path, "%s%s", p->prefix, src);
+ yaz_log(YLOG_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);
+ yaz_log(YLOG_DEBUG, "dirs_del %s", path);
+ if (p->rw)
+ {
+ if (!strcmp(path, p->nextpath))
+ p->nextpath_deleted = 1;
+ 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;
}
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+
projects / idzebra-moved-to-github.git / blobdiff