X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=index%2Fdirs.c;h=b51704ba8b1bea0c1dc8f3f48f1f341f559ed496;hp=27e96b9c6aff080913424597a07be7cb9c657da7;hb=e4c6861efeeea654bfb00c5f0239ee258629d77f;hpb=f4c557cfebb4fa779a858c7d305081d4d92578da diff --git a/index/dirs.c b/index/dirs.c index 27e96b9..b51704b 100644 --- a/index/dirs.c +++ b/index/dirs.c @@ -1,217 +1,233 @@ -/* - * Copyright (C) 1994-1996, Index Data I/S - * All rights reserved. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: dirs.c,v $ - * Revision 1.10 1996-06-04 10:18:58 adam - * Minor changes - removed include of ctype.h. - * - * 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 1.8 1996/04/12 07:02:21 adam - * File update of single files. - * - * Revision 1.7 1996/03/21 14:50:09 adam - * File update uses modify-time instead of change-time. - * - * 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 1.5 1996/01/17 14:54:44 adam - * Function dirs_rmdir uses dict_delete. - * - * Revision 1.4 1995/11/30 08:34:27 adam - * Started work on commit facility. - * Changed a few malloc/free to xmalloc/xfree. - * - * Revision 1.3 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. - */ +/* 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 +#endif #include +#include #include #include #include -#include #include "index.h" +#define DIRS_MAX_PATH 1024 + struct dirs_info { Dict dict; + int rw; int no_read; int no_cur; int no_max; struct dirs_entry *entries; - char nextpath[256]; - char prefix[256]; + 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 (char *name, const char *info, int pos, +static int dirs_client_proc(char *name, const char *info, int pos, void *client) { - struct dirs_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->no_cur < 0) { ci->no_cur = 0; return 0; } - if (ci->no_cur == ci->no_max) - { - assert (0); - } + assert(ci->no_cur < ci->no_max); entry = ci->entries + ci->no_cur; if (info[0] == sizeof(entry->sysno)+sizeof(entry->mtime)) { - strcpy (entry->path, name + ci->prelen); + 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), + 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); + strcpy(entry->path, name + ci->prelen); entry->kind = dirs_dir; - memcpy (&entry->mtime, info+1, sizeof(entry->mtime)); + memcpy(&entry->mtime, info+1, sizeof(entry->mtime)); ci->no_cur++; } 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)); + yaz_log(YLOG_DEBUG, "dirs_open %s", rep); + p = (struct dirs_info *) xmalloc(sizeof(*p)); p->dict = dict; - strcpy (p->prefix, rep); + p->rw = rw; + strcpy(p->prefix, rep); p->prelen = strlen(p->prefix); - strcpy (p->nextpath, rep); + strcpy(p->nextpath, rep); + p->nextpath_deleted = 0; p->no_read = p->no_cur = 0; - after = p->no_max = 400; - 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); + 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) +struct dirs_info *dirs_fopen(Dict dict, const char *path, int rw) { struct dirs_info *p; struct dirs_entry *entry; char *info; - p = xmalloc (sizeof(*p)); + p = (struct dirs_info *) xmalloc(sizeof(*p)); p->dict = dict; + p->rw = rw; *p->prefix = '\0'; - p->entries = xmalloc (sizeof(*p->entries)); + 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); + info = dict_lookup(dict, path); if (info && info[0] == sizeof(entry->sysno)+sizeof(entry->mtime)) { - strcpy (entry->path, path); + strcpy(entry->path, path); entry->kind = dirs_file; - memcpy (&entry->sysno, info+1, sizeof(entry->sysno)); - memcpy (&entry->mtime, info+1+sizeof(entry->sysno), + memcpy(&entry->sysno, info+1, sizeof(entry->sysno)); + memcpy(&entry->mtime, info+1+sizeof(entry->sysno), sizeof(entry->mtime)); p->no_cur++; } return p; } -struct dirs_entry *dirs_read (struct dirs_info *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, + 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; - p->no_cur = -1; - logf (LOG_DEBUG, "dirs_read rescan"); - dict_scan (p->dict, p->nextpath, &before, &after, p, dirs_client_proc); + 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; - if (p->no_read < p->no_cur) + 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) +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) +void dirs_mkdir(struct dirs_info *p, const char *src, time_t mtime) { - char path[256]; + char path[DIRS_MAX_PATH]; - sprintf (path, "%s%s", p->prefix, src); - logf (LOG_DEBUG, "dirs_mkdir %s", path); - dict_insert (p->dict, path, sizeof(mtime), &mtime); + 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) +void dirs_rmdir(struct dirs_info *p, const char *src) { - char path[256]; + char path[DIRS_MAX_PATH]; - sprintf (path, "%s%s", p->prefix, src); - logf (LOG_DEBUG, "dirs_rmdir %s", path); - dict_delete (p->dict, 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, int sysno, time_t mtime) +void dirs_add(struct dirs_info *p, const char *src, zint sysno, time_t mtime) { - char path[256]; + 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)); - dict_insert (p->dict, path, sizeof(sysno)+sizeof(mtime), info); + 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) +void dirs_del(struct dirs_info *p, const char *src) { - char path[256]; + char path[DIRS_MAX_PATH]; - sprintf (path, "%s%s", p->prefix, src); - logf (LOG_DEBUG, "dirs_del %s", path); - dict_delete (p->dict, 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) +void dirs_free(struct dirs_info **pp) { struct dirs_info *p = *pp; - xfree (p->entries); - xfree (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 + */ +