X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=rset%2Frstemp.c;h=984249b1fdea6c695d31e324f96b518ca4538c25;hp=0c835f91e8d534f77157415d42880a07bb7f0930;hb=fc94f3546d759ddb144f879ca9e6fa60f13df292;hpb=a322231bcd4bfed2886c571aa91da5f73cad62a9 diff --git a/rset/rstemp.c b/rset/rstemp.c index 0c835f9..984249b 100644 --- a/rset/rstemp.c +++ b/rset/rstemp.c @@ -1,172 +1,222 @@ -/* - * Copyright (C) 1994-1995, Index Data I/S - * All rights reserved. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: rstemp.c,v $ - * Revision 1.7 1995-09-07 13:58:44 adam - * New parameter: result-set file descriptor (RSFD) to support multiple - * positions within the same result-set. - * Boolean operators: and, or, not implemented. - * - * Revision 1.6 1995/09/06 16:11:56 adam - * More work on boolean sets. - * - * Revision 1.5 1995/09/05 16:36:59 adam - * Minor changes. - * - * Revision 1.4 1995/09/05 11:43:24 adam - * Complete version of temporary sets. Not tested yet though. - * - * Revision 1.3 1995/09/04 15:20:40 adam - * More work on temp sets. is_open member removed. - * - * Revision 1.2 1995/09/04 09:10:56 adam - * Minor changes. - * - * Revision 1.1 1994/11/04 13:21:30 quinn - * Working. - * - */ +/* $Id: rstemp.c,v 1.54 2004-11-04 13:54:08 heikki Exp $ + Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003 + Index Data Aps + +This file is part of the Zebra server. + +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 Zebra; see the file LICENSE.zebra. If not, write to the +Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. +*/ #include #include +#ifdef WIN32 +#include +#else #include +#endif +#include #include #include -#include -#include +#include +#include -static rset_control *r_create(const struct rset_control *sel, void *parms); -static RSFD r_open (rset_control *ct, int wflag); +static RSFD r_open (RSET ct, int flag); static void r_close (RSFD rfd); -static void r_delete (rset_control *ct); -static void r_rewind (RSFD rfd); -static int r_count (rset_control *ct); -static int r_read (RSFD rfd, void *buf); +static void r_delete (RSET ct); +static int r_read (RSFD rfd, void *buf, TERMID *term); static int r_write (RSFD rfd, const void *buf); +static void r_pos (RSFD rfd, double *current, double *total); +static void r_flush (RSFD rfd, int mk); +static void r_reread (RSFD rfd); + -static const rset_control control = +static const struct rset_control control = { - "Temporary set", - 0, - r_create, + "temp", + r_delete, + rset_get_one_term, r_open, r_close, - r_delete, - r_rewind, - r_count, + rset_default_forward, + r_pos, r_read, - r_write + r_write, }; -const rset_control *rset_kind_temp = &control; +const struct rset_control *rset_kind_temp = &control; struct rset_temp_info { - int fd; - char *fname; - size_t key_size; - char *buf_mem; - size_t buf_size; - size_t pos_end; - size_t pos_cur; - size_t pos_buf; - size_t pos_border; - int dirty; + int fd; /* file descriptor for temp file */ + char *fname; /* name of temp file */ + char *buf_mem; /* window buffer */ + size_t buf_size; /* size of window */ + size_t pos_end; /* last position in set */ + size_t pos_buf; /* position of first byte in window */ + size_t pos_border; /* position of last byte+1 in window */ + int dirty; /* window is dirty */ + zint hits; /* no of hits */ + char *temp_path; }; struct rset_temp_rfd { - struct rset_temp_info *info; - struct rset_temp_rfd *next; + void *buf; + size_t pos_cur; /* current position in set */ + /* FIXME - term pos or what ?? */ + zint cur; /* number of the current hit */ }; -static struct rset_control *r_create(const struct rset_control *sel, - void *parms) +static int log_level=0; +static int log_level_initialized=0; + +RSET rstemp_create( NMEM nmem, const struct key_control *kcontrol, + int scope, + const char *temp_path,TERMID term) { - rset_control *newct; - rset_temp_parms *temp_parms = parms; + RSET rnew=rset_create_base(&control, nmem, kcontrol, scope,term); struct rset_temp_info *info; - - logf (LOG_DEBUG, "ritemp_create(%s)", sel->desc); - newct = xmalloc(sizeof(*newct)); - memcpy(newct, sel, sizeof(*sel)); - newct->buf = xmalloc (sizeof(struct rset_temp_info)); - info = newct->buf; - + if (!log_level_initialized) + { + log_level=yaz_log_module_level("rstemp"); + log_level_initialized=1; + } + info = (struct rset_temp_info *) nmem_malloc(rnew->nmem, sizeof(*info)); info->fd = -1; info->fname = NULL; - info->key_size = temp_parms->key_size; - info->buf_size = 1024; - info->buf_mem = xmalloc (info->buf_size); - info->pos_cur = 0; + info->buf_size = 4096; + info->buf_mem = (char *) nmem_malloc (rnew->nmem, info->buf_size); info->pos_end = 0; info->pos_buf = 0; info->dirty = 0; + info->hits = 0; - return newct; -} + if (!temp_path) + info->temp_path = NULL; + else + info->temp_path = nmem_strdup(rnew->nmem,temp_path); + rnew->priv=info; + return rnew; +} /* rstemp_create */ -static RSFD r_open (struct rset_control *ct, int wflag) +static void r_delete (RSET ct) { - struct rset_temp_info *info = ct->buf; - struct rset_temp_rfd *rfd; + struct rset_temp_info *info = (struct rset_temp_info*) ct->priv; - assert (info->fd == -1); + logf (log_level, "r_delete: set size %ld", (long) info->pos_end); if (info->fname) { - if (wflag) - info->fd = open (info->fname, O_RDWR|O_CREAT, 0666); + logf (log_level, "r_delete: unlink %s", info->fname); + unlink (info->fname); + } +} + + +static RSFD r_open (RSET ct, int flag) +{ + struct rset_temp_info *info = (struct rset_temp_info *) ct->priv; + RSFD rfd; + struct rset_temp_rfd *prfd; + + if (info->fd == -1 && info->fname) + { + if (flag & RSETF_WRITE) + info->fd = open (info->fname, O_BINARY|O_RDWR|O_CREAT, 0666); else - info->fd = open (info->fname, O_RDONLY); + info->fd = open (info->fname, O_BINARY|O_RDONLY); if (info->fd == -1) { - logf (LOG_FATAL|LOG_ERRNO, "open %s", info->fname); + logf (LOG_FATAL|LOG_ERRNO, "rstemp: open failed %s", info->fname); exit (1); } } - rfd = xmalloc (sizeof(*rfd)); - rfd->info = info; - r_rewind (ct); + rfd = rfd_create_base(ct); + if (!rfd->priv){ + prfd= (struct rset_temp_rfd *) nmem_malloc(ct->nmem, sizeof(*prfd)); + rfd->priv=(void *)prfd; + prfd->buf = nmem_malloc (ct->nmem,ct->keycontrol->key_size); + } else + prfd= rfd->priv; + r_flush (rfd, 0); + prfd->pos_cur = 0; + info->pos_buf = 0; + r_reread (rfd); + prfd->cur=0; return rfd; } +/* r_flush: + flush current window to file if file is assocated with set + */ static void r_flush (RSFD rfd, int mk) { - struct rset_temp_info *info = ((struct rset_temp_rfd*) rfd)->info; + /* struct rset_temp_info *info = ((struct rset_temp_rfd*) rfd)->info; */ + struct rset_temp_info *info = rfd->rset->priv; if (!info->fname && mk) { - char *s = (char*) tempnam (NULL, "zrs"); +#if HAVE_MKSTEMP + char template[1024]; + + if (info->temp_path) + sprintf (template, "%s/zrsXXXXXX", info->temp_path); + else + sprintf (template, "zrsXXXXXX"); + + info->fd = mkstemp (template); - info->fname = xmalloc (strlen(s)+1); + if (info->fd == -1) + { + logf (LOG_FATAL|LOG_ERRNO, "rstemp: mkstemp %s", template); + exit (1); + } + info->fname= nmem_malloc(rfd->rset->nmem,strlen(template)+1); + strcpy (info->fname, template); +#else + char *s = (char*) tempnam (info->temp_path, "zrs"); + info->fname= nmem_malloc(rfd->rset->nmem,strlen(template)+1); strcpy (info->fname, s); - info->fd = open (info->fname, O_RDWR|O_CREAT, 0666); + logf (log_level, "creating tempfile %s", info->fname); + info->fd = open (info->fname, O_BINARY|O_RDWR|O_CREAT, 0666); if (info->fd == -1) { - logf (LOG_FATAL|LOG_ERRNO, "open %s", info->fname); + logf (LOG_FATAL|LOG_ERRNO, "rstemp: open %s", info->fname); exit (1); } +#endif } if (info->fname && info->fd != -1 && info->dirty) { - size_t r, count; + size_t count; + int r; if (lseek (info->fd, info->pos_buf, SEEK_SET) == -1) { - logf (LOG_FATAL|LOG_ERRNO, "lseek %s", info->fname); + logf (LOG_FATAL|LOG_ERRNO, "rstemp: lseek %s", info->fname); exit (1); } count = info->buf_size; if (count > info->pos_end - info->pos_buf) count = info->pos_end - info->pos_buf; - if ((r = write (info->fd, info->buf_mem, count)) < count) + if ((r = write (info->fd, info->buf_mem, count)) < (int) count) { if (r == -1) - logf (LOG_FATAL|LOG_ERRNO, "read %s", info->fname); + logf (LOG_FATAL|LOG_ERRNO, "rstemp: write %s", info->fname); else - logf (LOG_FATAL, "write of %ld but got %ld", + logf (LOG_FATAL, "rstemp: write of %ld but got %ld", (long) count, (long) r); exit (1); } @@ -176,108 +226,115 @@ static void r_flush (RSFD rfd, int mk) static void r_close (RSFD rfd) { - struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info; - + /*struct rset_temp_rfd *mrfd = (struct rset_temp_rfd*) rfd->priv; */ + struct rset_temp_info *info = (struct rset_temp_info *)rfd->rset->priv; r_flush (rfd, 0); if (info->fname && info->fd != -1) { close (info->fd); info->fd = -1; - } + } /* FIXME - Is this right, don't we risk closing the file too early ?*/ + rfd_delete_base(rfd); } -static void r_delete (struct rset_control *ct) -{ - struct rset_temp_info *info = ct->buf; - - r_close (ct); - if (info->fname) - unlink (info->fname); - free (info->buf_mem); - free (info->fname); - free (info); -} +/* r_reread: + read from file to window if file is assocated with set - + indicated by fname + */ static void r_reread (RSFD rfd) { - struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info; + struct rset_temp_rfd *mrfd = (struct rset_temp_rfd*) rfd->priv; + struct rset_temp_info *info = (struct rset_temp_info *)rfd->rset->priv; if (info->fname) { - size_t r, count; + size_t count; + int r; - info->pos_border = info->pos_cur + info->buf_size; + info->pos_border = mrfd->pos_cur + + info->buf_size; if (info->pos_border > info->pos_end) info->pos_border = info->pos_end; count = info->pos_border - info->pos_buf; if (count > 0) - if ((r = read (info->fd, info->buf_mem, count)) < count) + { + if (lseek (info->fd, info->pos_buf, SEEK_SET) == -1) + { + logf (LOG_FATAL|LOG_ERRNO, "rstemp: lseek %s", info->fname); + exit (1); + } + if ((r = read (info->fd, info->buf_mem, count)) < (int) count) { if (r == -1) - logf (LOG_FATAL|LOG_ERRNO, "read %s", info->fname); + logf (LOG_FATAL|LOG_ERRNO, "rstemp: read %s", info->fname); else logf (LOG_FATAL, "read of %ld but got %ld", (long) count, (long) r); exit (1); } + } } else info->pos_border = info->pos_end; } -static void r_rewind (RSFD rfd) -{ - struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info; - - r_flush (rfd, 0); - info->pos_cur = 0; - info->pos_buf = 0; - r_reread (rfd); -} -static int r_count (struct rset_control *ct) +static int r_read (RSFD rfd, void *buf, TERMID *term) { - struct rset_temp_info *info = ct->buf; + struct rset_temp_rfd *mrfd = (struct rset_temp_rfd*) rfd->priv; + struct rset_temp_info *info = (struct rset_temp_info *)rfd->rset->priv; - return info->pos_end / info->key_size; -} + size_t nc = mrfd->pos_cur + rfd->rset->keycontrol->key_size; -static int r_read (RSFD rfd, void *buf) -{ - struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info; - - size_t nc = info->pos_cur + info->key_size; - - if (nc > info->pos_border) + if (mrfd->pos_cur < info->pos_buf || nc > info->pos_border) { if (nc > info->pos_end) return 0; r_flush (rfd, 0); - info->pos_buf = info->pos_cur; + info->pos_buf = mrfd->pos_cur; r_reread (rfd); } - memcpy (buf, info->buf_mem + (info->pos_cur - info->pos_buf), - info->key_size); - info->pos_cur = nc; + memcpy (buf, info->buf_mem + (mrfd->pos_cur - info->pos_buf), + rfd->rset->keycontrol->key_size); + if (term) + *term=rfd->rset->term; + /* FIXME - should we store and return terms ?? */ + mrfd->pos_cur = nc; + mrfd->cur++; return 1; } static int r_write (RSFD rfd, const void *buf) { - struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info; + struct rset_temp_rfd *mrfd = (struct rset_temp_rfd*) rfd->priv; + struct rset_temp_info *info = (struct rset_temp_info *)rfd->rset->priv; - size_t nc = info->pos_cur + info->key_size; + size_t nc = mrfd->pos_cur + rfd->rset->keycontrol->key_size; if (nc > info->pos_buf + info->buf_size) { r_flush (rfd, 1); - info->pos_buf = info->pos_cur; - r_reread (rfd); + info->pos_buf = mrfd->pos_cur; + if (info->pos_buf < info->pos_end) + r_reread (rfd); } - memcpy (info->buf_mem + (info->pos_cur - info->pos_buf), buf, - info->key_size); info->dirty = 1; - info->pos_border = info->pos_cur = nc; + memcpy (info->buf_mem + (mrfd->pos_cur - info->pos_buf), buf, + rfd->rset->keycontrol->key_size); + mrfd->pos_cur = nc; + if (nc > info->pos_end) + info->pos_border = info->pos_end = nc; + info->hits++; return 1; } +static void r_pos (RSFD rfd, double *current, double *total) +{ + /* struct rset_temp_rfd *mrfd = (struct rset_temp_rfd*) rfd; */ + struct rset_temp_rfd *mrfd = (struct rset_temp_rfd*) rfd->priv; + struct rset_temp_info *info = (struct rset_temp_info *)rfd->rset->priv; + + *current=(double) mrfd->cur; + *total=(double) info->hits; +}