X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=index%2Frectext.c;fp=index%2Frectext.c;h=e07aa2eb5ae046760f6660687eb2642b6e12cfce;hp=0000000000000000000000000000000000000000;hb=7415d28c149c1bab51fe93aeaccdd14085b69bd9;hpb=4b596d1b6150430c615ca7724876e5974a282d7d diff --git a/index/rectext.c b/index/rectext.c new file mode 100644 index 0000000..e07aa2e --- /dev/null +++ b/index/rectext.c @@ -0,0 +1,265 @@ +/* $Id: rectext.c,v 1.1 2006-07-03 14:27:09 adam Exp $ + Copyright (C) 1995-2005 + 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 +#include + +#include +#include + +struct filter_info { + char *sep; +}; + +static void *filter_init (Res res, RecType recType) +{ + struct filter_info *tinfo = (struct filter_info *) xmalloc(sizeof(*tinfo)); + tinfo->sep = 0; + return tinfo; +} + +static ZEBRA_RES filter_config(void *clientData, Res res, const char *args) +{ + struct filter_info *tinfo = (struct filter_info*) clientData; + xfree(tinfo->sep); + tinfo->sep = 0; + if (args && *args) + tinfo->sep = xstrdup(args); + return ZEBRA_OK; +} + +static void filter_destroy (void *clientData) +{ + struct filter_info *tinfo = clientData; + xfree (tinfo->sep); + xfree (tinfo); +} + +struct buf_info { + struct recExtractCtrl *p; + char *buf; + int offset; + int max; +}; + +static struct buf_info *buf_open (struct recExtractCtrl *p) +{ + struct buf_info *fi = (struct buf_info *) xmalloc (sizeof(*fi)); + + fi->p = p; + fi->buf = (char *) xmalloc (4096); + fi->offset = 1; + fi->max = 1; + return fi; +} + +static int buf_getchar (struct filter_info *tinfo, struct buf_info *fi, char *dst) +{ + if (fi->offset >= fi->max) + { + if (fi->max <= 0) + return 0; + fi->max = (*fi->p->readf)(fi->p->fh, fi->buf, 4096); + fi->offset = 0; + if (fi->max <= 0) + return 0; + } + *dst = fi->buf[(fi->offset)++]; + if (tinfo->sep && *dst == *tinfo->sep) + { + off_t off = (*fi->p->tellf)(fi->p->fh); + (*fi->p->endf)(fi->p->fh, off - (fi->max - fi->offset)); + return 0; + } + return 1; +} + +static void buf_close (struct buf_info *fi) +{ + xfree (fi->buf); + xfree (fi); +} + +static int filter_extract (void *clientData, struct recExtractCtrl *p) +{ + struct filter_info *tinfo = clientData; + char w[512]; + RecWord recWord; + int r; + struct buf_info *fi = buf_open (p); + int no_read = 0; + +#if 0 + yaz_log(YLOG_LOG, "filter_extract off=%ld", + (long) (*fi->p->tellf)(fi->p->fh)); +#endif + (*p->init)(p, &recWord); + do + { + int i = 0; + + r = buf_getchar (tinfo, fi, w); + while (r > 0 && i < 511 && w[i] != '\n' && w[i] != '\r') + { + i++; + r = buf_getchar (tinfo, fi, w + i); + } + if (i) + { + no_read += i; + recWord.term_buf = w; + recWord.term_len = i; + (*p->tokenAdd)(&recWord); + } + } while (r > 0); + buf_close (fi); + if (no_read == 0) + return RECCTRL_EXTRACT_EOF; + return RECCTRL_EXTRACT_OK; +} + +static int filter_retrieve (void *clientData, struct recRetrieveCtrl *p) +{ + int r, filter_ptr = 0; + static char *filter_buf = NULL; + static int filter_size = 0; + int make_header = 1; + int make_body = 1; + const char *elementSetName = NULL; + int no_lines = 0; + + if (p->comp && p->comp->which == Z_RecordComp_simple && + p->comp->u.simple->which == Z_ElementSetNames_generic) + elementSetName = p->comp->u.simple->u.generic; + + if (elementSetName) + { + /* don't make header for the R(aw) element set name */ + if (!strcmp(elementSetName, "R")) + { + make_header = 0; + make_body = 1; + } + /* only make header for the H(eader) element set name */ + else if (!strcmp(elementSetName, "H")) + { + make_header = 1; + make_body = 0; + } + } + while (1) + { + if (filter_ptr + 4096 >= filter_size) + { + char *nb; + + filter_size = 2*filter_size + 8192; + nb = (char *) xmalloc (filter_size); + if (filter_buf) + { + memcpy (nb, filter_buf, filter_ptr); + xfree (filter_buf); + } + filter_buf = nb; + } + if (make_header && filter_ptr == 0) + { + if (p->score >= 0) + { + sprintf (filter_buf, "Rank: %d\n", p->score); + filter_ptr = strlen(filter_buf); + } + sprintf (filter_buf + filter_ptr, "Local Number: " ZINT_FORMAT "\n", + p->localno); + filter_ptr = strlen(filter_buf); + if (p->fname) + { + sprintf (filter_buf + filter_ptr, "Filename: %s\n", p->fname); + filter_ptr = strlen(filter_buf); + } + strcpy(filter_buf+filter_ptr++, "\n"); + } + if (!make_body) + break; + r = (*p->readf)(p->fh, filter_buf + filter_ptr, 4096); + if (r <= 0) + break; + filter_ptr += r; + } + filter_buf[filter_ptr] = '\0'; + if (elementSetName) + { + if (!strcmp (elementSetName, "B")) + no_lines = 4; + if (!strcmp (elementSetName, "M")) + no_lines = 20; + } + if (no_lines) + { + char *p = filter_buf; + int i = 0; + + while (++i <= no_lines && (p = strchr (p, '\n'))) + p++; + if (p) + { + p[1] = '\0'; + filter_ptr = p-filter_buf; + } + } + p->output_format = VAL_SUTRS; + p->rec_buf = filter_buf; + p->rec_len = filter_ptr; + return 0; +} + +static struct recType filter_type = { + 0, + "text", + filter_init, + filter_config, + filter_destroy, + filter_extract, + filter_retrieve +}; + +RecType +#ifdef IDZEBRA_STATIC_TEXT +idzebra_filter_text +#else +idzebra_filter +#endif + +[] = { + &filter_type, + 0, +}; +/* + * Local variables: + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + * vim: shiftwidth=4 tabstop=8 expandtab + */ +