+++ /dev/null
-/*
- * Copyright (c) 1995-2002, Index Data.
- * See the file LICENSE for details.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Id: d1_read.c,v 1.54 2002-10-08 23:00:09 adam Exp $
- */
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <yaz/xmalloc.h>
-#include <yaz/yaz-util.h>
-#include <yaz/log.h>
-#include <yaz/data1.h>
-
-data1_node *data1_get_root_tag (data1_handle dh, data1_node *n)
-{
- if (!n)
- return 0;
- if (data1_is_xmlmode(dh))
- {
- n = n->child;
- while (n && n->which != DATA1N_tag)
- n = n->next;
- }
- return n;
-}
-
-/*
- * get the tag which is the immediate parent of this node (this may mean
- * traversing intermediate things like variants and stuff.
- */
-data1_node *get_parent_tag (data1_handle dh, data1_node *n)
-{
- if (data1_is_xmlmode(dh))
- {
- for (; n && n->which != DATA1N_root; n = n->parent)
- if (n->which == DATA1N_tag && n->parent &&
- n->parent->which != DATA1N_root)
- return n;
- }
- else
- {
- for (; n && n->which != DATA1N_root; n = n->parent)
- if (n->which == DATA1N_tag)
- return n;
- }
- return 0;
-}
-
-data1_node *data1_mk_node (data1_handle dh, NMEM m)
-{
- return data1_mk_node2 (dh, m, DATA1N_root, 0);
-}
-
-data1_node *data1_mk_node_type (data1_handle dh, NMEM m, int type)
-{
- return data1_mk_node2 (dh, m, type, 0);
-}
-
-static void data1_init_node (data1_handle dh, data1_node *r, int type)
-{
- r->which = type;
- switch(type)
- {
- case DATA1N_tag:
- r->u.tag.tag = 0;
- r->u.tag.element = 0;
- r->u.tag.no_data_requested = 0;
- r->u.tag.node_selected = 0;
- r->u.tag.make_variantlist = 0;
- r->u.tag.get_bytes = -1;
- r->u.tag.attributes = 0;
- break;
- case DATA1N_root:
- r->u.root.type = 0;
- r->u.root.absyn = 0;
- break;
- case DATA1N_data:
- r->u.data.data = 0;
- r->u.data.len = 0;
- r->u.data.what = 0;
- r->u.data.formatted_text = 0;
- break;
- case DATA1N_comment:
- r->u.data.data = 0;
- r->u.data.len = 0;
- r->u.data.what = 0;
- r->u.data.formatted_text = 1;
- break;
- case DATA1N_variant:
- r->u.variant.type = 0;
- r->u.variant.value = 0;
- break;
- case DATA1N_preprocess:
- r->u.preprocess.target = 0;
- r->u.preprocess.attributes = 0;
- break;
- default:
- logf (LOG_WARN, "data_mk_node_type. bad type = %d\n", type);
- }
-}
-
-data1_node *data1_append_node (data1_handle dh, NMEM m, int type,
- data1_node *parent)
-{
- data1_node *r = (data1_node *)nmem_malloc(m, sizeof(*r));
- r->next = r->child = r->last_child = 0;
- r->destroy = 0;
-
- if (!parent)
- r->root = r;
- else
- {
- r->root = parent->root;
- r->parent = parent;
- if (!parent->child)
- parent->child = parent->last_child = r;
- else
- parent->last_child->next = r;
- parent->last_child = r;
- }
- data1_init_node(dh, r, type);
- return r;
-}
-
-data1_node *data1_mk_node2 (data1_handle dh, NMEM m, int type,
- data1_node *parent)
-{
- return data1_append_node (dh, m, type, parent);
-}
-
-data1_node *data1_insert_node (data1_handle dh, NMEM m, int type,
- data1_node *parent)
-{
- data1_node *r = (data1_node *)nmem_malloc(m, sizeof(*r));
- r->next = r->child = r->last_child = 0;
- r->destroy = 0;
-
- if (!parent)
- r->root = r;
- else
- {
- r->root = parent->root;
- r->parent = parent;
- if (!parent->child)
- parent->last_child = r;
- else
- r->next = parent->child;
- parent->child = r;
- }
- data1_init_node(dh, r, type);
- return r;
-}
-
-void data1_free_tree (data1_handle dh, data1_node *t)
-{
- data1_node *p = t->child, *pn;
-
- while (p)
- {
- pn = p->next;
- data1_free_tree (dh, p);
- p = pn;
- }
- if (t->destroy)
- (*t->destroy)(t);
-}
-
-data1_node *data1_mk_root (data1_handle dh, NMEM nmem, const char *name)
-{
- data1_absyn *absyn = data1_get_absyn (dh, name);
- data1_node *res;
- if (!absyn)
- {
- yaz_log(LOG_WARN, "Unable to acquire abstract syntax " "for '%s'",
- name);
- /* It's now OK for a record not to have an absyn */
- }
- res = data1_mk_node2 (dh, nmem, DATA1N_root, 0);
- res->u.root.type = data1_insert_string (dh, res, nmem, name);
- res->u.root.absyn = absyn;
- return res;
-}
-
-void data1_set_root(data1_handle dh, data1_node *res,
- NMEM nmem, const char *name)
-{
- data1_absyn *absyn = data1_get_absyn (dh, name);
-
- res->u.root.type = data1_insert_string (dh, res, nmem, name);
- res->u.root.absyn = absyn;
-}
-
-data1_node *data1_mk_preprocess (data1_handle dh, NMEM nmem,
- const char *target,
- const char **attr, data1_node *at)
-{
- return data1_mk_preprocess_n (dh, nmem, target, strlen(target),
- attr, at);
-}
-
-data1_node *data1_mk_preprocess_n (data1_handle dh, NMEM nmem,
- const char *target, size_t len,
- const char **attr, data1_node *at)
-{
- data1_xattr **p;
- data1_node *res = data1_mk_node2 (dh, nmem, DATA1N_preprocess, at);
- res->u.preprocess.target = data1_insert_string_n (dh, res, nmem,
- target, len);
-
- p = &res->u.preprocess.attributes;
- while (attr && *attr)
- {
- *p = (data1_xattr*) nmem_malloc (nmem, sizeof(**p));
- (*p)->name = nmem_strdup (nmem, *attr++);
- (*p)->value = nmem_strdup (nmem, *attr++);
- (*p)->what = DATA1I_text;
-
- p = &(*p)->next;
- }
- *p = 0;
- return res;
-}
-
-data1_node *data1_mk_tag_n (data1_handle dh, NMEM nmem,
- const char *tag, size_t len, const char **attr,
- data1_node *at)
-{
- data1_node *partag = get_parent_tag(dh, at);
- data1_node *res = data1_mk_node2 (dh, nmem, DATA1N_tag, at);
- data1_xattr **p;
- data1_element *e = 0;
-
- res->u.tag.tag = data1_insert_string_n (dh, res, nmem, tag, len);
-
- if (!partag) /* top tag? */
- e = data1_getelementbytagname (dh, at->root->u.root.absyn,
- 0 /* index as local */,
- res->u.tag.tag);
- else
- {
- /* only set element for known tags */
- e = partag->u.tag.element;
- if (e)
- e = data1_getelementbytagname (dh, at->root->u.root.absyn,
- e, res->u.tag.tag);
- }
- res->u.tag.element = e;
- p = &res->u.tag.attributes;
- while (attr && *attr)
- {
- *p = (data1_xattr*) nmem_malloc (nmem, sizeof(**p));
- (*p)->name = nmem_strdup (nmem, *attr++);
- (*p)->value = nmem_strdup (nmem, *attr++);
- (*p)->what = DATA1I_text;
- p = &(*p)->next;
- }
- *p = 0;
- return res;
-}
-
-void data1_tag_add_attr (data1_handle dh, NMEM nmem,
- data1_node *res, const char **attr)
-{
- data1_xattr **p;
-
- if (res->which != DATA1N_tag)
- return;
-
- p = &res->u.tag.attributes;
- while (*p)
- p = &(*p)->next;
-
- while (attr && *attr)
- {
- *p = (data1_xattr*) nmem_malloc (nmem, sizeof(**p));
- (*p)->name = nmem_strdup (nmem, *attr++);
- (*p)->value = nmem_strdup (nmem, *attr++);
- (*p)->what = DATA1I_text;
- p = &(*p)->next;
- }
- *p = 0;
-}
-
-data1_node *data1_mk_tag (data1_handle dh, NMEM nmem,
- const char *tag, const char **attr, data1_node *at)
-{
- return data1_mk_tag_n (dh, nmem, tag, strlen(tag), attr, at);
-}
-
-data1_node *data1_search_tag (data1_handle dh, data1_node *n,
- const char *tag)
-{
- if (*tag == '/')
- {
- n = data1_get_root_tag (dh, n);
- if (n)
- n = n->child;
- tag++;
- }
- for (; n; n = n->next)
- if (n->which == DATA1N_tag && n->u.tag.tag &&
- !yaz_matchstr (tag, n->u.tag.tag))
- {
- return n;
- }
- return 0;
-}
-
-data1_node *data1_mk_tag_uni (data1_handle dh, NMEM nmem,
- const char *tag, data1_node *at)
-{
- data1_node *node = data1_search_tag (dh, at->child, tag);
- if (!node)
- node = data1_mk_tag (dh, nmem, tag, 0 /* attr */, at);
- else
- node->child = node->last_child = 0;
- return node;
-}
-
-data1_node *data1_mk_text_n (data1_handle dh, NMEM mem,
- const char *buf, size_t len, data1_node *parent)
-{
- data1_node *res = data1_mk_node2 (dh, mem, DATA1N_data, parent);
- res->u.data.what = DATA1I_text;
- res->u.data.len = len;
-
- res->u.data.data = data1_insert_string_n (dh, res, mem, buf, len);
- return res;
-}
-
-data1_node *data1_mk_text_nf (data1_handle dh, NMEM mem,
- const char *buf, size_t len, data1_node *parent)
-{
- data1_node *res = data1_mk_text_n (dh, mem, buf, len, parent);
- res->u.data.formatted_text = 1;
- return res;
-}
-
-data1_node *data1_mk_text (data1_handle dh, NMEM mem,
- const char *buf, data1_node *parent)
-{
- return data1_mk_text_n (dh, mem, buf, strlen(buf), parent);
-}
-
-data1_node *data1_mk_comment_n (data1_handle dh, NMEM mem,
- const char *buf, size_t len,
- data1_node *parent)
-{
- data1_node *res = data1_mk_node2 (dh, mem, DATA1N_comment, parent);
- res->u.data.what = DATA1I_text;
- res->u.data.len = len;
-
- res->u.data.data = data1_insert_string_n (dh, res, mem, buf, len);
- return res;
-}
-
-data1_node *data1_mk_comment (data1_handle dh, NMEM mem,
- const char *buf, data1_node *parent)
-{
- return data1_mk_comment_n (dh, mem, buf, strlen(buf), parent);
-}
-
-char *data1_insert_string_n (data1_handle dh, data1_node *res,
- NMEM m, const char *str, size_t len)
-{
- char *b;
- if (len >= DATA1_LOCALDATA)
- b = (char *) nmem_malloc (m, len+1);
- else
- b = res->lbuf;
- memcpy (b, str, len);
- b[len] = 0;
- return b;
-}
-
-char *data1_insert_string (data1_handle dh, data1_node *res,
- NMEM m, const char *str)
-{
- return data1_insert_string_n (dh, res, m, str, strlen(str));
-}
-
-static data1_node *data1_add_insert_taggeddata(data1_handle dh,
- data1_node *at,
- const char *tagname, NMEM m,
- int local_allowed,
- int insert_mode)
-{
- data1_node *root = at->root;
- data1_node *partag = get_parent_tag (dh, at);
- data1_element *e = NULL;
- data1_node *datn = 0;
- data1_node *tagn = 0;
-
- if (!partag)
- e = data1_getelementbytagname (dh, root->u.root.absyn, 0, tagname);
- else
- {
- e = partag->u.tag.element;
- if (e)
- e = data1_getelementbytagname (dh, root->u.root.absyn, e, tagname);
- }
- if (local_allowed || e)
- {
- if (insert_mode)
- tagn = data1_insert_node (dh, m, DATA1N_tag, at);
- else
- tagn = data1_append_node (dh, m, DATA1N_tag, at);
- tagn->u.tag.tag = data1_insert_string (dh, tagn, m, tagname);
- tagn->u.tag.element = e;
- datn = data1_mk_node2 (dh, m, DATA1N_data, tagn);
- }
- return datn;
-}
-
-data1_node *data1_mk_tag_data(data1_handle dh, data1_node *at,
- const char *tagname, NMEM m)
-{
- return data1_add_insert_taggeddata (dh, at, tagname, m, 1, 0);
-}
-
-
-/*
- * Insert a tagged node into the record root as first child of the node at
- * which should be root or tag itself). Returns pointer to the data node,
- * which can then be modified.
- */
-data1_node *data1_mk_tag_data_wd(data1_handle dh, data1_node *at,
- const char *tagname, NMEM m)
-{
- return data1_add_insert_taggeddata (dh, at, tagname, m, 0, 1);
-}
-
-data1_node *data1_insert_taggeddata (data1_handle dh, data1_node *root,
- data1_node *at, const char *tagname,
- NMEM m)
-{
- return data1_add_insert_taggeddata (dh, at, tagname, m, 0, 1);
-}
-
-data1_node *data1_add_taggeddata (data1_handle dh, data1_node *root,
- data1_node *at, const char *tagname,
- NMEM m)
-{
- return data1_add_insert_taggeddata (dh, at, tagname, m, 1, 0);
-}
-
-data1_node *data1_mk_tag_data_int (data1_handle dh, data1_node *at,
- const char *tag, int num,
- NMEM nmem)
-{
- data1_node *node_data;
-
- node_data = data1_mk_tag_data (dh, at, tag, nmem);
- if (!node_data)
- return 0;
- node_data->u.data.what = DATA1I_num;
- node_data->u.data.data = node_data->lbuf;
- sprintf (node_data->u.data.data, "%d", num);
- node_data->u.data.len = strlen (node_data->u.data.data);
- return node_data;
-}
-
-data1_node *data1_mk_tag_data_oid (data1_handle dh, data1_node *at,
- const char *tag, Odr_oid *oid,
- NMEM nmem)
-{
- data1_node *node_data;
- char str[128], *p = str;
- Odr_oid *ii;
-
- node_data = data1_mk_tag_data (dh, at, tag, nmem);
- if (!node_data)
- return 0;
-
- for (ii = oid; *ii >= 0; ii++)
- {
- if (ii != oid)
- *p++ = '.';
- sprintf (p, "%d", *ii);
- p += strlen (p);
- }
- node_data->u.data.what = DATA1I_oid;
- node_data->u.data.len = strlen (str);
- node_data->u.data.data = data1_insert_string (dh, node_data, nmem, str);
- return node_data;
-}
-
-
-data1_node *data1_mk_tag_data_text (data1_handle dh, data1_node *at,
- const char *tag, const char *str,
- NMEM nmem)
-{
- data1_node *node_data;
-
- node_data = data1_mk_tag_data (dh, at, tag, nmem);
- if (!node_data)
- return 0;
- node_data->u.data.what = DATA1I_text;
- node_data->u.data.len = strlen (str);
- node_data->u.data.data = data1_insert_string (dh, node_data, nmem, str);
- return node_data;
-}
-
-
-data1_node *data1_mk_tag_data_text_uni (data1_handle dh, data1_node *at,
- const char *tag, const char *str,
- NMEM nmem)
-{
- data1_node *node = data1_search_tag (dh, at->child, tag);
- if (!node)
- return data1_mk_tag_data_text (dh, at, tag, str, nmem);
- else
- {
- data1_node *node_data = node->child;
- node_data->u.data.what = DATA1I_text;
- node_data->u.data.len = strlen (str);
- node_data->u.data.data = data1_insert_string (dh, node_data,
- nmem, str);
- node_data->child = node_data->last_child = 0;
- return node_data;
- }
-}
-
-static int ampr (int (*get_byte)(void *fh), void *fh, int *amp)
-{
-#if 1
- int c = (*get_byte)(fh);
- *amp = 0;
- return c;
-#else
- int c = (*get_byte)(fh);
- *amp = 0;
- if (c == '&')
- {
- char ent[20];
- int i = 0;
-
- while (1)
- {
- c = (*get_byte)(fh);
- if (c == ';')
- {
- ent[i] = 0;
-
- c = ' ';
- if (!strcmp (ent, "quot"))
- c = '"';
- if (!strcmp (ent, "apos"))
- c = '\'';
- if (!strcmp (ent, "gt"))
- c = '>';
- if (!strcmp (ent, "lt"))
- c = '<';
- if (!strcmp (ent, "amp"))
- c = '&';
- *amp = 1;
- break;
- }
- else if (c == 0 || d1_isspace(c))
- break;
- if (i < 19)
- ent[i++] = c;
- }
- }
- return c;
-#endif
-}
-
-data1_xattr *data1_read_xattr (data1_handle dh, NMEM m,
- int (*get_byte)(void *fh), void *fh,
- WRBUF wrbuf, int *ch, int *amp)
-{
- data1_xattr *p_first = 0;
- data1_xattr **pp = &p_first;
- int c = *ch;
- for (;;)
- {
- data1_xattr *p;
- int len;
- while (*amp || (c && d1_isspace(c)))
- c = ampr (get_byte, fh, amp);
- if (*amp == 0 && (c == 0 || c == '>' || c == '/'))
- break;
- *pp = p = (data1_xattr *) nmem_malloc (m, sizeof(*p));
- p->next = 0;
- pp = &p->next;
- p->value = 0;
- p->what = DATA1I_xmltext;
-
- wrbuf_rewind(wrbuf);
- while (c && c != '=' && c != '>' && c != '/' && !d1_isspace(c))
- {
- wrbuf_putc (wrbuf, c);
- c = ampr (get_byte, fh, amp);
- }
- wrbuf_putc (wrbuf, '\0');
- len = wrbuf_len(wrbuf);
- p->name = (char*) nmem_malloc (m, len);
- strcpy (p->name, wrbuf_buf(wrbuf));
- if (c == '=')
- {
- c = ampr (get_byte, fh, amp);
- if (*amp == 0 && c == '"')
- {
- c = ampr (get_byte, fh, amp);
- wrbuf_rewind(wrbuf);
- while (*amp || (c && c != '"'))
- {
- wrbuf_putc (wrbuf, c);
- c = ampr (get_byte, fh, amp);
- }
- if (c)
- c = ampr (get_byte, fh, amp);
- }
- else if (*amp == 0 && c == '\'')
- {
- c = ampr (get_byte, fh, amp);
- wrbuf_rewind(wrbuf);
- while (*amp || (c && c != '\''))
- {
- wrbuf_putc (wrbuf, c);
- c = ampr (get_byte, fh, amp);
- }
- if (c)
- c = ampr (get_byte, fh, amp);
- }
- else
- {
- wrbuf_rewind(wrbuf);
- while (*amp || (c && c != '>' && c != '/'))
- {
- wrbuf_putc (wrbuf, c);
- c = ampr (get_byte, fh, amp);
- }
- }
- wrbuf_putc (wrbuf, '\0');
- len = wrbuf_len(wrbuf);
- p->value = (char*) nmem_malloc (m, len);
- strcpy (p->value, wrbuf_buf(wrbuf));
- }
- }
- *ch = c;
- return p_first;
-}
-
-/*
- * Ugh. Sometimes functions just grow and grow on you. This one reads a
- * 'node' and its children.
- */
-data1_node *data1_read_nodex (data1_handle dh, NMEM m,
- int (*get_byte)(void *fh), void *fh, WRBUF wrbuf)
-{
- data1_node *d1_stack[256];
- data1_node *res;
- int c, amp;
- int level = 0;
- int line = 1;
-
- d1_stack[level] = 0;
- c = ampr (get_byte, fh, &);
- while (c != '\0')
- {
- data1_node *parent = level ? d1_stack[level-1] : 0;
-
- if (amp == 0 && c == '<') /* beginning of tag */
- {
- data1_xattr *xattr;
-
- char tag[64];
- char args[256];
- int null_tag = 0;
- int end_tag = 0;
- size_t i = 0;
-
- c = ampr (get_byte, fh, &);
- if (amp == 0 && c == '/')
- {
- end_tag = 1;
- c = ampr (get_byte, fh, &);
- }
- else if (amp == 0 && c == '!')
- {
- int c0, amp0;
-
- wrbuf_rewind(wrbuf);
-
- c0 = ampr (get_byte, fh, &0);
- if (amp0 == 0 && c0 == '\0')
- break;
- c = ampr (get_byte, fh, &);
-
- if (amp0 == 0 && c0 == '-' && amp == 0 && c == '-')
- {
- /* COMMENT: <!-- ... --> */
- int no_dash = 0;
-
- c = ampr (get_byte, fh, &);
- while (amp || c)
- {
- if (amp == 0 && c == '-')
- no_dash++;
- else if (amp == 0 && c == '>' && no_dash >= 2)
- {
- if (level > 0)
- d1_stack[level] =
- data1_mk_comment_n (
- dh, m,
- wrbuf_buf(wrbuf), wrbuf_len(wrbuf)-2,
- d1_stack[level-1]);
- c = ampr (get_byte, fh, &); /* skip > */
- break;
- }
- else
- no_dash = 0;
- wrbuf_putc (wrbuf, c);
- c = ampr (get_byte, fh, &);
- }
- continue;
- }
- else
- { /* DIRECTIVE: <! .. > */
-
- int blevel = 0;
- while (amp || c)
- {
- if (amp == 0 && c == '>' && blevel == 0)
- {
- c = ampr (get_byte, fh, &);
- break;
- }
- if (amp == 0 && c == '[')
- blevel++;
- if (amp == 0 && c == ']' && blevel > 0)
- blevel--;
- c = ampr (get_byte, fh, &);
- }
- continue;
- }
- }
- while (amp || (c && c != '>' && c != '/' && !d1_isspace(c)))
- {
- if (i < (sizeof(tag)-1))
- tag[i++] = c;
- c = ampr (get_byte, fh, &);
- }
- tag[i] = '\0';
- xattr = data1_read_xattr (dh, m, get_byte, fh, wrbuf, &c, &);
- args[0] = '\0';
- if (amp == 0 && c == '/')
- { /* <tag attrs/> or <tag/> */
- null_tag = 1;
- c = ampr (get_byte, fh, &);
- }
- if (amp || c != '>')
- {
- yaz_log(LOG_WARN, "d1: %d: Malformed tag", line);
- return 0;
- }
- else
- c = ampr (get_byte, fh, &);
-
- /* End tag? */
- if (end_tag)
- {
- if (*tag == '\0')
- --level; /* </> */
- else
- { /* </tag> */
- int i = level;
- while (i > 0)
- {
- parent = d1_stack[--i];
- if ((parent->which == DATA1N_root &&
- !strcmp(tag, parent->u.root.type)) ||
- (parent->which == DATA1N_tag &&
- !strcmp(tag, parent->u.tag.tag)))
- {
- level = i;
- break;
- }
- }
- if (i != level)
- {
- yaz_log (LOG_WARN, "%d: no begin tag for %s",
- line, tag);
- break;
- }
- }
- if (data1_is_xmlmode(dh))
- {
- if (level <= 1)
- return d1_stack[0];
- }
- else
- {
- if (level <= 0)
- return d1_stack[0];
- }
- continue;
- }
- else if (!strcmp(tag, "var"))
- {
- char tclass[DATA1_MAX_SYMBOL], type[DATA1_MAX_SYMBOL];
- data1_vartype *tp;
- int val_offset;
-
- if (sscanf(args, "%s %s %n", tclass, type, &val_offset) != 2)
- {
- yaz_log(LOG_WARN, "Malformed variant triple at '%s'", tag);
- continue;
- }
- if (!(tp =
- data1_getvartypebyct(dh,
- parent->root->u.root.absyn->varset,
- tclass, type)))
- continue;
- /*
- * If we're the first variant in this group, create a parent
- * variant, and insert it before the current variant.
- */
- if (parent->which != DATA1N_variant)
- {
- res = data1_mk_node2 (dh, m, DATA1N_variant, parent);
- }
- else
- {
- /*
- * now determine if one of our ancestor triples is of
- * same type. If so, we break here.
- */
- int i;
- for (i = level-1; d1_stack[i]->which==DATA1N_variant; --i)
- if (d1_stack[i]->u.variant.type == tp)
- {
- level = i;
- break;
- }
- res = data1_mk_node2 (dh, m, DATA1N_variant, parent);
- res->u.variant.type = tp;
- res->u.variant.value =
- data1_insert_string (dh, res, m, args + val_offset);
- }
- }
- else
- {
-
- /* tag .. acquire our element in the abstract syntax */
- if (level == 0)
- {
- parent = data1_mk_root (dh, m, tag);
- res = d1_stack[level] = parent;
-
- if (data1_is_xmlmode(dh))
- {
- level++;
- res = data1_mk_tag (dh, m, tag, 0 /* attr */, parent);
- res->u.tag.attributes = xattr;
- }
- }
- else
- {
- res = data1_mk_tag (dh, m, tag, 0 /* attr */, parent);
- res->u.tag.attributes = xattr;
- }
- }
- d1_stack[level] = res;
- d1_stack[level+1] = 0;
- if (level < 250 && !null_tag)
- ++level;
- }
- else /* != '<'... this is a body of text */
- {
- int len;
-
- if (level == 0)
- {
- c = ampr (get_byte, fh, &);
- continue;
- }
- res = data1_mk_node2 (dh, m, DATA1N_data, parent);
- res->u.data.what = DATA1I_xmltext;
- res->u.data.formatted_text = 0;
- d1_stack[level] = res;
-
- wrbuf_rewind(wrbuf);
-
- while (amp || (c && c != '<'))
- {
- wrbuf_putc (wrbuf, c);
- c = ampr (get_byte, fh, &);
- }
- len = wrbuf_len(wrbuf);
-
- /* use local buffer of nmem if too large */
- if (len >= DATA1_LOCALDATA)
- res->u.data.data = (char*) nmem_malloc (m, len);
- else
- res->u.data.data = res->lbuf;
-
- if (len)
- memcpy (res->u.data.data, wrbuf_buf(wrbuf), len);
- else
- res->u.data.data = 0;
- res->u.data.len = len;
- }
- }
- return 0;
-}
-
-int getc_mem (void *fh)
-{
- const char **p = (const char **) fh;
- if (**p)
- return *(*p)++;
- return 0;
-}
-
-data1_node *data1_read_node (data1_handle dh, const char **buf, NMEM m)
-{
- WRBUF wrbuf = wrbuf_alloc();
- data1_node *node;
-
- node = data1_read_nodex(dh, m, getc_mem, (void *) (buf), wrbuf);
- wrbuf_free (wrbuf, 1);
- return node;
-}
-
-/*
- * Read a record in the native syntax.
- */
-data1_node *data1_read_record(data1_handle dh,
- int (*rf)(void *, char *, size_t), void *fh,
- NMEM m)
-{
- int *size;
- char **buf = data1_get_read_buf (dh, &size);
- const char *bp;
- int rd = 0, res;
-
- if (!*buf)
- *buf = (char *)xmalloc(*size = 4096);
-
- for (;;)
- {
- if (rd + 2048 >= *size && !(*buf =(char *)xrealloc(*buf, *size *= 2)))
- abort();
- if ((res = (*rf)(fh, *buf + rd, 2048)) <= 0)
- {
- if (!res)
- {
- bp = *buf;
- (*buf)[rd] = '\0';
- return data1_read_node(dh, &bp, m);
- }
- else
- return 0;
- }
- rd += res;
- }
-}
-
-data1_node *data1_read_sgml (data1_handle dh, NMEM m, const char *buf)
-{
- const char *bp = buf;
- return data1_read_node (dh, &bp, m);
-}
-
-
-static int conv_item (NMEM m, yaz_iconv_t t,
- WRBUF wrbuf, char *inbuf, size_t inlen)
-{
- wrbuf_rewind (wrbuf);
- if (wrbuf->size < 10)
- wrbuf_grow (wrbuf, 10);
- for (;;)
- {
- char *outbuf = wrbuf->buf + wrbuf->pos;
- size_t outlen = wrbuf->size - wrbuf->pos;
- if (yaz_iconv (t, &inbuf, &inlen, &outbuf, &outlen) ==
- (size_t)(-1) && yaz_iconv_error(t) != YAZ_ICONV_E2BIG)
- {
- /* bad data. stop and skip conversion entirely */
- return -1;
- }
- else if (inlen == 0)
- { /* finished converting */
- wrbuf->pos = wrbuf->size - outlen;
- break;
- }
- else
- {
- /* buffer too small: make sure we expand buffer */
- wrbuf->pos = wrbuf->size - outlen;
- wrbuf_grow(wrbuf, 20);
- }
- }
- return 0;
-}
-
-static void data1_iconv_s (data1_handle dh, NMEM m, data1_node *n,
- yaz_iconv_t t, WRBUF wrbuf, const char *tocode)
-{
- for (; n; n = n->next)
- {
- switch (n->which)
- {
- case DATA1N_data:
- case DATA1N_comment:
- if (conv_item (m, t, wrbuf, n->u.data.data, n->u.data.len) == 0)
- {
- n->u.data.data =
- data1_insert_string_n (dh, n, m, wrbuf->buf,
- wrbuf->pos);
- n->u.data.len = wrbuf->pos;
- }
- break;
- case DATA1N_tag:
- if (conv_item (m, t, wrbuf, n->u.tag.tag, strlen(n->u.tag.tag))
- == 0)
- {
- n->u.tag.tag =
- data1_insert_string_n (dh, n, m,
- wrbuf->buf, wrbuf->pos);
- }
- if (n->u.tag.attributes)
- {
- data1_xattr *p;
- for (p = n->u.tag.attributes; p; p = p->next)
- {
- if (p->value &&
- conv_item(m, t, wrbuf, p->value, strlen(p->value))
- == 0)
- {
- wrbuf_puts (wrbuf, "");
- p->value = nmem_strdup (m, wrbuf->buf);
- }
- }
- }
- break;
- case DATA1N_preprocess:
- if (strcmp(n->u.preprocess.target, "xml") == 0)
- {
- data1_xattr *p = n->u.preprocess.attributes;
- for (; p; p = p->next)
- if (strcmp (p->name, "encoding") == 0)
- p->value = nmem_strdup (m, tocode);
- }
- break;
- }
- data1_iconv_s (dh, m, n->child, t, wrbuf, tocode);
- }
-}
-
-const char *data1_get_encoding (data1_handle dh, data1_node *n)
-{
- /* see if we have an xml header that specifies encoding */
- if (n && n->child && n->child->which == DATA1N_preprocess &&
- strcmp (n->child->u.preprocess.target, "xml") == 0)
- {
- data1_xattr *xp = n->child->u.preprocess.attributes;
- for (; xp; xp = xp->next)
- if (!strcmp (xp->name, "encoding") == 0)
- return xp->value;
- }
- /* no encoding in header, so see if "encoding" was specified for abs */
- if (n && n->which == DATA1N_root &&
- n->u.root.absyn && n->u.root.absyn->encoding)
- return n->u.root.absyn->encoding;
- /* none of above, return a hard coded default */
- return "ISO-8859-1";
-}
-
-int data1_iconv (data1_handle dh, NMEM m, data1_node *n,
- const char *tocode,
- const char *fromcode)
-{
- if (strcmp (tocode, fromcode))
- {
- WRBUF wrbuf = wrbuf_alloc();
- yaz_iconv_t t = yaz_iconv_open (tocode, fromcode);
- if (!t)
- return -1;
- data1_iconv_s (dh, m, n, t, wrbuf, tocode);
- yaz_iconv_close (t);
- wrbuf_free (wrbuf, 1);
- }
- return 0;
-}