1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2018 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #include "output/spv/spvxml-helpers.h"
25 #include "libpspp/cast.h"
26 #include "libpspp/compiler.h"
27 #include "libpspp/hash-functions.h"
28 #include "libpspp/str.h"
29 #include "output/options.h"
30 #include "output/table.h"
32 #include "gl/xvasprintf.h"
34 char * WARN_UNUSED_RESULT
35 spvxml_context_finish (struct spvxml_context *ctx, struct spvxml_node *root)
38 root->class_->spvxml_node_collect_ids (ctx, root);
40 root->class_->spvxml_node_resolve_refs (ctx, root);
42 hmap_destroy (&ctx->id_map);
48 spvxml_node_context_uninit (struct spvxml_node_context *nctx)
50 for (struct spvxml_attribute *a = nctx->attrs;
51 a < &nctx->attrs[nctx->n_attrs]; a++)
56 xml_element_type_to_string (xmlElementType type)
60 case XML_ELEMENT_NODE: return "element";
61 case XML_ATTRIBUTE_NODE: return "attribute";
62 case XML_TEXT_NODE: return "text";
63 case XML_CDATA_SECTION_NODE: return "CDATA section";
64 case XML_ENTITY_REF_NODE: return "entity reference";
65 case XML_ENTITY_NODE: return "entity";
66 case XML_PI_NODE: return "PI";
67 case XML_COMMENT_NODE: return "comment";
68 case XML_DOCUMENT_NODE: return "document";
69 case XML_DOCUMENT_TYPE_NODE: return "document type";
70 case XML_DOCUMENT_FRAG_NODE: return "document fragment";
71 case XML_NOTATION_NODE: return "notation";
72 case XML_HTML_DOCUMENT_NODE: return "HTML document";
73 case XML_DTD_NODE: return "DTD";
74 case XML_ELEMENT_DECL: return "element declaration";
75 case XML_ATTRIBUTE_DECL: return "attribute declaration";
76 case XML_ENTITY_DECL: return "entity declaration";
77 case XML_NAMESPACE_DECL: return "namespace declaration";
78 case XML_XINCLUDE_START: return "XInclude start";
79 case XML_XINCLUDE_END: return "XInclude end";
80 case XML_DOCB_DOCUMENT_NODE: return "docb document";
81 default: return "<error>";
86 spvxml_format_node_path (const xmlNode *node, struct string *s)
88 enum { MAX_STACK = 32 };
89 const xmlNode *stack[MAX_STACK];
92 while (node != NULL && node->type != XML_DOCUMENT_NODE && n < MAX_STACK)
101 ds_put_byte (s, '/');
103 ds_put_cstr (s, CHAR_CAST (char *, node->name));
104 if (node->type == XML_ELEMENT_NODE)
110 for (const xmlNode *sibling = node->parent->children;
111 sibling; sibling = sibling->next)
115 else if (sibling->type == XML_ELEMENT_NODE
116 && !strcmp (CHAR_CAST (char *, sibling->name),
117 CHAR_CAST (char *, node->name)))
121 ds_put_format (s, "[%zu]", index);
125 ds_put_format (s, "(%s)", xml_element_type_to_string (node->type));
129 static struct spvxml_node *
130 spvxml_node_find (struct spvxml_context *ctx, const char *name,
133 struct spvxml_node *node;
134 HMAP_FOR_EACH_WITH_HASH (node, struct spvxml_node, id_node, hash,
136 if (!strcmp (node->id, name))
143 spvxml_node_collect_id (struct spvxml_context *ctx, struct spvxml_node *node)
148 unsigned int hash = hash_string (node->id, 0);
149 struct spvxml_node *other = spvxml_node_find (ctx, node->id, hash);
154 struct string node_path = DS_EMPTY_INITIALIZER;
155 spvxml_format_node_path (node->raw, &node_path);
157 struct string other_path = DS_EMPTY_INITIALIZER;
158 spvxml_format_node_path (other->raw, &other_path);
160 ctx->error = xasprintf ("Nodes %s and %s both have ID \"%s\".",
161 ds_cstr (&node_path),
162 ds_cstr (&other_path), node->id);
164 ds_destroy (&node_path);
165 ds_destroy (&other_path);
171 hmap_insert (&ctx->id_map, &node->id_node, hash);
175 spvxml_node_resolve_ref (struct spvxml_context *ctx,
176 const xmlNode *src, const char *attr_name,
177 const struct spvxml_node_class *const *classes,
180 char *dst_id = CHAR_CAST (
181 char *, xmlGetProp (CONST_CAST (xmlNode *, src),
182 CHAR_CAST (xmlChar *, attr_name)));
186 struct spvxml_node *dst = spvxml_node_find (ctx, dst_id,
187 hash_string (dst_id, 0));
190 struct string node_path = DS_EMPTY_INITIALIZER;
191 spvxml_format_node_path (src, &node_path);
193 ctx->error = xasprintf (
194 "%s: Attribute %s has unknown target ID \"%s\".",
195 ds_cstr (&node_path), attr_name, dst_id);
197 ds_destroy (&node_path);
207 for (size_t i = 0; i < n; i++)
208 if (classes[i] == dst->class_)
216 struct string s = DS_EMPTY_INITIALIZER;
217 spvxml_format_node_path (src, &s);
219 ds_put_format (&s, ": Attribute \"%s\" should refer to a \"%s\"",
220 attr_name, classes[0]->name);
222 ds_put_format (&s, " or \"%s\"", classes[1]->name);
225 for (size_t i = 1; i < n - 1; i++)
226 ds_put_format (&s, ", \"%s\"", classes[i]->name);
227 ds_put_format (&s, ", or \"%s\"", classes[n - 1]->name);
229 ds_put_format (&s, " element, but its target ID \"%s\" "
230 "actually refers to a \"%s\" element.",
231 dst_id, dst->class_->name);
233 ctx->error = ds_steal_cstr (&s);
240 void PRINTF_FORMAT (2, 3)
241 spvxml_attr_error (struct spvxml_node_context *nctx, const char *format, ...)
246 struct string s = DS_EMPTY_INITIALIZER;
247 ds_put_cstr (&s, "error parsing attributes of ");
248 spvxml_format_node_path (nctx->parent, &s);
251 va_start (args, format);
252 ds_put_cstr (&s, ": ");
253 ds_put_vformat (&s, format, args);
256 nctx->up->error = ds_steal_cstr (&s);
259 /* xmlGetPropNodeValueInternal() is from tree.c in libxml2 2.9.4+dfsg1, which
260 is covered by the following copyright and license:
262 Except where otherwise noted in the source code (e.g. the files hash.c,
263 list.c and the trio files, which are covered by a similar licence but with
264 different Copyright notices) all the files are:
266 Copyright (C) 1998-2012 Daniel Veillard. All Rights Reserved.
268 Permission is hereby granted, free of charge, to any person obtaining a copy
269 of this software and associated documentation files (the "Software"), to
270 deal in the Software without restriction, including without limitation the
271 rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
272 sell copies of the Software, and to permit persons to whom the Software is
273 fur- nished to do so, subject to the following conditions:
275 The above copyright notice and this permission notice shall be included in
276 all copies or substantial portions of the Software.
278 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
279 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
280 FIT- NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
281 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
282 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
283 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
287 xmlGetPropNodeValueInternal(const xmlAttr *prop)
291 if (prop->type == XML_ATTRIBUTE_NODE) {
293 * Note that we return at least the empty string.
294 * TODO: Do we really always want that?
296 if (prop->children != NULL) {
297 if ((prop->children->next == NULL) &&
298 ((prop->children->type == XML_TEXT_NODE) ||
299 (prop->children->type == XML_CDATA_SECTION_NODE)))
302 * Optimization for the common case: only 1 text node.
304 return(xmlStrdup(prop->children->content));
308 ret = xmlNodeListGetString(prop->doc, prop->children, 1);
313 return(xmlStrdup((xmlChar *)""));
314 } else if (prop->type == XML_ATTRIBUTE_DECL) {
315 return(xmlStrdup(((xmlAttributePtr)prop)->defaultValue));
320 static struct spvxml_attribute *
321 find_attribute (struct spvxml_node_context *nctx, const char *name)
323 /* XXX This is linear search but we could use binary search. */
324 for (struct spvxml_attribute *a = nctx->attrs;
325 a < &nctx->attrs[nctx->n_attrs]; a++)
326 if (!strcmp (a->name, name))
333 format_attribute (struct string *s, const xmlAttr *attr)
335 const char *name = CHAR_CAST (char *, attr->name);
336 char *value = CHAR_CAST (char *, xmlGetPropNodeValueInternal (attr));
337 ds_put_format (s, "%s=\"%s\"", name, value);
342 spvxml_parse_attributes (struct spvxml_node_context *nctx)
344 for (const xmlAttr *node = nctx->parent->properties; node; node = node->next)
346 const char *node_name = CHAR_CAST (char *, node->name);
347 struct spvxml_attribute *a = find_attribute (nctx, node_name);
350 if (!strcmp (node_name, "id"))
353 struct string unexpected = DS_EMPTY_INITIALIZER;
354 format_attribute (&unexpected, node);
357 for (node = node->next; node; node = node->next)
359 node_name = CHAR_CAST (char *, node->name);
360 if (!find_attribute (nctx, node_name)
361 && strcmp (node_name, "id"))
363 ds_put_byte (&unexpected, ' ');
364 format_attribute (&unexpected, node);
369 spvxml_attr_error (nctx, "Node has unexpected attribute%s: %s",
370 n > 1 ? "s" : "", ds_cstr (&unexpected));
371 ds_destroy (&unexpected);
376 spvxml_attr_error (nctx, "Duplicate attribute \"%s\".", a->name);
379 a->value = CHAR_CAST (char *, xmlGetPropNodeValueInternal (node));
382 for (struct spvxml_attribute *a = nctx->attrs;
383 a < &nctx->attrs[nctx->n_attrs]; a++)
385 if (a->required && !a->value)
386 spvxml_attr_error (nctx, "Missing required attribute \"%s\".",
393 spvxml_attr_parse_enum (struct spvxml_node_context *nctx,
394 const struct spvxml_attribute *a,
395 const struct spvxml_enum enums[])
400 for (const struct spvxml_enum *e = enums; e->name; e++)
401 if (!strcmp (a->value, e->name))
404 for (const struct spvxml_enum *e = enums; e->name; e++)
405 if (!strcmp (e->name, "OTHER"))
408 spvxml_attr_error (nctx, "Attribute %s has unexpected value \"%s\".",
414 spvxml_attr_parse_bool (struct spvxml_node_context *nctx,
415 const struct spvxml_attribute *a)
417 static const struct spvxml_enum bool_enums[] = {
423 return !a->value ? -1 : spvxml_attr_parse_enum (nctx, a, bool_enums);
427 spvxml_attr_parse_fixed (struct spvxml_node_context *nctx,
428 const struct spvxml_attribute *a,
429 const char *attr_value)
431 const struct spvxml_enum fixed_enums[] = {
432 { attr_value, true },
436 return spvxml_attr_parse_enum (nctx, a, fixed_enums);
440 spvxml_attr_parse_int (struct spvxml_node_context *nctx,
441 const struct spvxml_attribute *a)
447 int save_errno = errno;
449 long int integer = strtol (a->value, &tail, 10);
450 if (errno || *tail || integer <= INT_MIN || integer > INT_MAX)
452 spvxml_attr_error (nctx, "Attribute %s has unexpected value "
453 "\"%s\" expecting small integer.", a->name, a->value);
462 spvxml_attr_parse_color (struct spvxml_node_context *nctx,
463 const struct spvxml_attribute *a)
465 if (!a->value || !strcmp (a->value, "transparent"))
468 struct cell_color color;
469 if (parse_color__ (a->value, &color))
470 return (color.r << 16) | (color.g << 8) | color.b;
472 spvxml_attr_error (nctx, "Attribute %s has unexpected value "
473 "\"%s\" expecting #rrggbb or rrggbb or web color name.",
479 try_strtod (char *s, char **tail, double *real)
481 char *comma = strchr (s, ',');
485 int save_errno = errno;
488 *real = strtod (s, tail);
489 bool ok = errno == 0;
498 spvxml_attr_parse_real (struct spvxml_node_context *nctx,
499 const struct spvxml_attribute *a)
506 if (!try_strtod (a->value, &tail, &real) || *tail)
507 spvxml_attr_error (nctx, "Attribute %s has unexpected value "
508 "\"%s\" expecting real number.", a->name, a->value);
514 spvxml_attr_parse_dimension (struct spvxml_node_context *nctx,
515 const struct spvxml_attribute *a)
522 if (!try_strtod (a->value, &tail, &real))
525 tail += strspn (tail, " \t\r\n");
532 static const struct unit units[] = {
534 /* If you add anything to this table, update the table in
535 doc/dev/spv-file-format.texi also. */
544 /* Device-independent pixels. */
557 for (size_t i = 0; i < sizeof units / sizeof *units; i++)
558 if (!strcmp (units[i].name, tail))
559 return real / units[i].divisor;
563 spvxml_attr_error (nctx, "Attribute %s has unexpected value "
564 "\"%s\" expecting dimension.", a->name, a->value);
569 spvxml_attr_parse_ref (struct spvxml_node_context *nctx UNUSED,
570 const struct spvxml_attribute *a UNUSED)
575 void PRINTF_FORMAT (3, 4)
576 spvxml_content_error (struct spvxml_node_context *nctx, const xmlNode *node,
577 const char *format, ...)
582 struct string s = DS_EMPTY_INITIALIZER;
584 ds_put_cstr (&s, "error parsing content of ");
585 spvxml_format_node_path (nctx->parent, &s);
589 ds_put_format (&s, " at %s", xml_element_type_to_string (node->type));
591 ds_put_format (&s, " \"%s\"", node->name);
594 ds_put_format (&s, " at end of content");
597 va_start (args, format);
598 ds_put_cstr (&s, ": ");
599 ds_put_vformat (&s, format, args);
602 //puts (ds_cstr (&s));
604 nctx->up->error = ds_steal_cstr (&s);
608 spvxml_content_parse_element (struct spvxml_node_context *nctx,
610 const char *elem_name, xmlNode **outp)
612 xmlNode *node = *nodep;
615 if (node->type == XML_ELEMENT_NODE
616 && (!strcmp (CHAR_CAST (char *, node->name), elem_name)
617 || !strcmp (elem_name, "any")))
623 else if (node->type != XML_COMMENT_NODE)
629 spvxml_content_error (nctx, node, "\"%s\" element expected.", elem_name);
635 spvxml_content_parse_text (struct spvxml_node_context *nctx UNUSED, xmlNode **nodep,
638 struct string text = DS_EMPTY_INITIALIZER;
640 xmlNode *node = *nodep;
643 if (node->type == XML_TEXT_NODE || node->type == XML_CDATA_SECTION_NODE)
645 char *segment = CHAR_CAST (char *, xmlNodeGetContent (node));
648 text.ss = ss_cstr (segment);
649 text.capacity = text.ss.length;
653 ds_put_cstr (&text, segment);
657 else if (node->type != XML_COMMENT_NODE)
664 *textp = ds_steal_cstr (&text);
670 spvxml_content_parse_end (struct spvxml_node_context *nctx, xmlNode *node)
676 else if (node->type != XML_COMMENT_NODE)
682 struct string s = DS_EMPTY_INITIALIZER;
684 for (int i = 0; i < 4 && node; i++, node = node->next)
687 ds_put_cstr (&s, ", ");
688 ds_put_cstr (&s, xml_element_type_to_string (node->type));
690 ds_put_format (&s, " \"%s\"", node->name);
693 ds_put_format (&s, ", ...");
695 spvxml_content_error (nctx, node, "Extra content found expecting end: %s",