1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2017, 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/spv.h"
23 #include <libxml/HTMLparser.h>
24 #include <libxml/xmlreader.h>
28 #include "libpspp/assertion.h"
29 #include "libpspp/cast.h"
30 #include "libpspp/hash-functions.h"
31 #include "libpspp/message.h"
32 #include "libpspp/str.h"
33 #include "libpspp/zip-reader.h"
34 #include "output/page-setup-item.h"
35 #include "output/pivot-table.h"
36 #include "output/spv/detail-xml-parser.h"
37 #include "output/spv/light-binary-parser.h"
38 #include "output/spv/spv-css-parser.h"
39 #include "output/spv/spv-legacy-data.h"
40 #include "output/spv/spv-legacy-decoder.h"
41 #include "output/spv/spv-light-decoder.h"
42 #include "output/spv/structure-xml-parser.h"
44 #include "gl/c-ctype.h"
45 #include "gl/intprops.h"
46 #include "gl/minmax.h"
47 #include "gl/xalloc.h"
48 #include "gl/xvasprintf.h"
52 #define _(msgid) gettext (msgid)
53 #define N_(msgid) (msgid)
57 struct string zip_errs;
58 struct zip_reader *zip;
59 struct spv_item *root;
60 struct page_setup *page_setup;
63 const struct page_setup *
64 spv_get_page_setup (const struct spv_reader *spv)
66 return spv->page_setup;
70 spv_item_type_to_string (enum spv_item_type type)
74 case SPV_ITEM_HEADING: return "heading";
75 case SPV_ITEM_TEXT: return "text";
76 case SPV_ITEM_TABLE: return "table";
77 case SPV_ITEM_GRAPH: return "graph";
78 case SPV_ITEM_MODEL: return "model";
79 case SPV_ITEM_OBJECT: return "object";
80 default: return "**error**";
85 spv_item_class_to_string (enum spv_item_class class)
89 #define SPV_CLASS(ENUM, NAME) case SPV_CLASS_##ENUM: return NAME;
97 spv_item_class_from_string (const char *name)
99 #define SPV_CLASS(ENUM, NAME) \
100 if (!strcmp (name, NAME)) return SPV_CLASS_##ENUM;
104 return SPV_N_CLASSES;
108 spv_item_get_type (const struct spv_item *item)
114 spv_item_get_class (const struct spv_item *item)
116 const char *label = spv_item_get_label (item);
122 case SPV_ITEM_HEADING:
123 return SPV_CLASS_HEADINGS;
126 return (!strcmp (label, "Title") ? SPV_CLASS_OUTLINEHEADERS
127 : !strcmp (label, "Log") ? SPV_CLASS_LOGS
128 : !strcmp (label, "Page Title") ? SPV_CLASS_PAGETITLE
132 return (!strcmp (label, "Warnings") ? SPV_CLASS_WARNINGS
133 : !strcmp (label, "Notes") ? SPV_CLASS_NOTES
137 return SPV_CLASS_CHARTS;
140 return SPV_CLASS_MODELS;
142 case SPV_ITEM_OBJECT:
143 return SPV_CLASS_OTHER;
146 return SPV_CLASS_TREES;
149 return SPV_CLASS_UNKNOWN;
154 spv_item_get_label (const struct spv_item *item)
160 spv_item_is_heading (const struct spv_item *item)
162 return item->type == SPV_ITEM_HEADING;
166 spv_item_get_n_children (const struct spv_item *item)
168 return item->n_children;
172 spv_item_get_child (const struct spv_item *item, size_t idx)
174 assert (idx < item->n_children);
175 return item->children[idx];
179 spv_item_is_table (const struct spv_item *item)
181 return item->type == SPV_ITEM_TABLE;
185 spv_item_is_text (const struct spv_item *item)
187 return item->type == SPV_ITEM_TEXT;
190 const struct pivot_value *
191 spv_item_get_text (const struct spv_item *item)
193 assert (spv_item_is_text (item));
198 spv_item_next (const struct spv_item *item)
200 if (item->n_children)
201 return item->children[0];
205 size_t idx = item->parent_idx + 1;
207 if (idx < item->n_children)
208 return item->children[idx];
214 const struct spv_item *
215 spv_item_get_parent (const struct spv_item *item)
221 spv_item_get_level (const struct spv_item *item)
224 for (; item->parent; item = item->parent)
230 spv_item_get_command_id (const struct spv_item *item)
232 return item->command_id;
236 spv_item_get_subtype (const struct spv_item *item)
238 return item->subtype;
242 spv_item_is_visible (const struct spv_item *item)
244 return item->visible;
248 spv_item_destroy (struct spv_item *item)
252 free (item->structure_member);
255 free (item->command_id);
257 for (size_t i = 0; i < item->n_children; i++)
258 spv_item_destroy (item->children[i]);
259 free (item->children);
261 pivot_table_unref (item->table);
262 spv_legacy_properties_destroy (item->legacy_properties);
263 free (item->bin_member);
264 free (item->xml_member);
265 free (item->subtype);
267 pivot_value_destroy (item->text);
269 free (item->object_type);
277 spv_heading_add_child (struct spv_item *parent, struct spv_item *child)
279 assert (parent->type == SPV_ITEM_HEADING);
280 assert (!child->parent);
282 child->parent = parent;
283 child->parent_idx = parent->n_children;
285 if (parent->n_children >= parent->allocated_children)
286 parent->children = x2nrealloc (parent->children,
287 &parent->allocated_children,
288 sizeof *parent->children);
289 parent->children[parent->n_children++] = child;
293 find_xml_child_element (xmlNode *parent, const char *child_name)
295 for (xmlNode *node = parent->children; node; node = node->next)
296 if (node->type == XML_ELEMENT_NODE
298 && !strcmp (CHAR_CAST (char *, node->name), child_name))
305 get_xml_attr (const xmlNode *node, const char *name)
307 return CHAR_CAST (char *, xmlGetProp (node, CHAR_CAST (xmlChar *, name)));
311 put_xml_attr (const char *name, const char *value, struct string *dst)
316 ds_put_format (dst, " %s=\"", name);
317 for (const char *p = value; *p; p++)
322 ds_put_cstr (dst, " ");
325 ds_put_cstr (dst, "&");
328 ds_put_cstr (dst, "<");
331 ds_put_cstr (dst, ">");
334 ds_put_cstr (dst, """);
337 ds_put_byte (dst, *p);
341 ds_put_byte (dst, '"');
345 extract_html_text (const xmlNode *node, int base_font_size, struct string *s)
347 if (node->type == XML_ELEMENT_NODE)
349 const char *name = CHAR_CAST (char *, node->name);
350 if (!strcmp (name, "br"))
351 ds_put_byte (s, '\n');
352 else if (strcmp (name, "style"))
354 const char *tag = NULL;
355 if (strchr ("biu", name[0]) && name[1] == '\0')
358 ds_put_format (s, "<%s>", tag);
360 else if (!strcmp (name, "font"))
363 ds_put_format (s, "<%s", tag);
365 char *face = get_xml_attr (node, "face");
366 put_xml_attr ("face", face, s);
369 char *color = get_xml_attr (node, "color");
373 put_xml_attr ("color", color, s);
377 if (sscanf (color, "rgb (%"SCNu8", %"SCNu8", %"SCNu8")",
381 snprintf (color2, sizeof color2,
382 "#%02"PRIx8"%02"PRIx8"%02"PRIx8,
384 put_xml_attr ("color", color2, s);
390 char *size_s = get_xml_attr (node, "size");
391 int html_size = size_s ? atoi (size_s) : 0;
393 if (html_size >= 1 && html_size <= 7)
395 static const double scale[7] = {
396 .444, .556, .667, .778, 1.0, 1.33, 2.0
398 double size = base_font_size * scale[html_size - 1];
400 char size2[INT_BUFSIZE_BOUND (int)];
401 snprintf (size2, sizeof size2, "%.0f", size * 1024.);
402 put_xml_attr ("size", size2, s);
405 ds_put_cstr (s, ">");
407 for (const xmlNode *child = node->children; child;
409 extract_html_text (child, base_font_size, s);
411 ds_put_format (s, "</%s>", tag);
414 else if (node->type == XML_TEXT_NODE)
416 /* U+00A0 NONBREAKING SPACE is really, really common in SPV text and it
417 makes it impossible to break syntax across lines. Translate it into a
418 regular space. (Note that U+00A0 is C2 A0 in UTF-8.)
420 Do the same for U+2007 FIGURE SPACE, which also crops out weirdly
422 ds_extend (s, ds_length (s) + xmlStrlen (node->content));
423 for (const uint8_t *p = node->content; *p;)
426 if (p[0] == 0xc2 && p[1] == 0xa0)
431 else if (p[0] == 0xe2 && p[1] == 0x80 && p[2] == 0x87)
441 int last = ds_last (s);
442 if (last != EOF && !c_isspace (last))
446 ds_put_cstr (s, "<");
448 ds_put_cstr (s, ">");
450 ds_put_cstr (s, "&");
458 parse_embedded_html (const xmlNode *node)
460 /* Extract HTML from XML node. */
461 char *html_s = CHAR_CAST (char *, xmlNodeGetContent (node));
465 xmlDoc *html_doc = htmlReadMemory (
466 html_s, strlen (html_s),
467 NULL, "UTF-8", (HTML_PARSE_RECOVER | HTML_PARSE_NOERROR
468 | HTML_PARSE_NOWARNING | HTML_PARSE_NOBLANKS
469 | HTML_PARSE_NONET));
475 /* Given NODE, which should contain HTML content, returns the text within that
476 content as an allocated string. The caller must eventually free the
477 returned string (with xmlFree()). */
479 decode_embedded_html (const xmlNode *node, struct font_style *font_style)
481 struct string markup = DS_EMPTY_INITIALIZER;
482 *font_style = (struct font_style) FONT_STYLE_INITIALIZER;
483 font_style->size = 10;
485 xmlDoc *html_doc = parse_embedded_html (node);
488 xmlNode *root = xmlDocGetRootElement (html_doc);
489 xmlNode *head = root ? find_xml_child_element (root, "head") : NULL;
490 xmlNode *style = head ? find_xml_child_element (head, "style") : NULL;
493 uint8_t *style_s = xmlNodeGetContent (style);
494 spv_parse_css_style (CHAR_CAST (char *, style_s), font_style);
499 extract_html_text (root, font_style->size, &markup);
500 xmlFreeDoc (html_doc);
503 font_style->markup = true;
504 return ds_steal_cstr (&markup);
508 xstrdup_if_nonempty (const char *s)
510 return s && s[0] ? xstrdup (s) : NULL;
514 decode_container_text (const struct spvsx_container_text *ct,
515 struct spv_item *item)
517 item->type = SPV_ITEM_TEXT;
518 item->command_id = xstrdup_if_nonempty (ct->command_name);
520 item->text = xzalloc (sizeof *item->text);
521 item->text->type = PIVOT_VALUE_TEXT;
522 item->text->font_style = xmalloc (sizeof *item->text->font_style);
523 item->text->text.local = decode_embedded_html (ct->html->node_.raw,
524 item->text->font_style);
528 decode_page_p (const xmlNode *in, struct page_paragraph *out)
530 char *style = get_xml_attr (in, "style");
531 out->halign = (style && strstr (style, "center") ? TABLE_HALIGN_CENTER
532 : style && strstr (style, "right") ? TABLE_HALIGN_RIGHT
533 : TABLE_HALIGN_LEFT);
536 struct font_style font_style;
537 out->markup = decode_embedded_html (in, &font_style);
538 font_style_uninit (&font_style);
542 decode_page_paragraph (const struct spvsx_page_paragraph *page_paragraph,
543 struct page_heading *ph)
545 memset (ph, 0, sizeof *ph);
547 const struct spvsx_page_paragraph_text *page_paragraph_text
548 = page_paragraph->page_paragraph_text;
549 if (!page_paragraph_text)
552 xmlDoc *html_doc = parse_embedded_html (page_paragraph_text->node_.raw);
556 xmlNode *root = xmlDocGetRootElement (html_doc);
557 xmlNode *body = find_xml_child_element (root, "body");
559 for (const xmlNode *node = body->children; node; node = node->next)
560 if (node->type == XML_ELEMENT_NODE
561 && !strcmp (CHAR_CAST (const char *, node->name), "p"))
563 ph->paragraphs = xrealloc (ph->paragraphs,
564 (ph->n + 1) * sizeof *ph->paragraphs);
565 decode_page_p (node, &ph->paragraphs[ph->n++]);
567 xmlFreeDoc (html_doc);
571 spv_item_load (const struct spv_item *item)
573 if (spv_item_is_table (item))
574 spv_item_get_table (item);
578 spv_item_is_light_table (const struct spv_item *item)
580 return item->type == SPV_ITEM_TABLE && !item->xml_member;
583 char * WARN_UNUSED_RESULT
584 spv_item_get_raw_light_table (const struct spv_item *item,
585 void **data, size_t *size)
587 return zip_member_read_all (item->spv->zip, item->bin_member, data, size);
590 char * WARN_UNUSED_RESULT
591 spv_item_get_light_table (const struct spv_item *item,
592 struct spvlb_table **tablep)
596 if (!spv_item_is_light_table (item))
597 return xstrdup ("not a light binary table object");
601 char *error = spv_item_get_raw_light_table (item, &data, &size);
605 struct spvbin_input input;
606 spvbin_input_init (&input, data, size);
608 struct spvlb_table *table = NULL;
610 ? xasprintf ("light table member is empty")
611 : !spvlb_parse_table (&input, &table)
612 ? spvbin_input_to_error (&input, NULL)
613 : input.ofs != input.size
614 ? xasprintf ("expected end of file at offset %#zx", input.ofs)
618 struct string s = DS_EMPTY_INITIALIZER;
619 spv_item_format_path (item, &s);
620 ds_put_format (&s, " (%s): %s", item->bin_member, error);
623 error = ds_steal_cstr (&s);
632 pivot_table_open_light (struct spv_item *item)
634 assert (spv_item_is_light_table (item));
636 struct spvlb_table *raw_table;
637 char *error = spv_item_get_light_table (item, &raw_table);
639 error = decode_spvlb_table (raw_table, &item->table);
640 spvlb_free_table (raw_table);
646 spv_item_is_legacy_table (const struct spv_item *item)
648 return item->type == SPV_ITEM_TABLE && item->xml_member;
651 char * WARN_UNUSED_RESULT
652 spv_item_get_raw_legacy_data (const struct spv_item *item,
653 void **data, size_t *size)
655 if (!spv_item_is_legacy_table (item))
656 return xstrdup ("not a legacy table object");
658 return zip_member_read_all (item->spv->zip, item->bin_member, data, size);
661 char * WARN_UNUSED_RESULT
662 spv_item_get_legacy_data (const struct spv_item *item, struct spv_data *data)
666 char *error = spv_item_get_raw_legacy_data (item, &raw, &size);
669 error = spv_legacy_data_decode (raw, size, data);
676 static char * WARN_UNUSED_RESULT
677 spv_read_xml_member (struct spv_reader *spv, const char *member_name,
678 bool keep_blanks, const char *root_element_name,
683 struct zip_member *zm = zip_member_open (spv->zip, member_name);
685 return ds_steal_cstr (&spv->zip_errs);
687 xmlParserCtxt *parser;
688 xmlKeepBlanksDefault (keep_blanks);
689 parser = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL);
692 zip_member_finish (zm);
693 return xasprintf (_("%s: Failed to create XML parser"), member_name);
698 while ((retval = zip_member_read (zm, buf, sizeof buf)) > 0)
699 xmlParseChunk (parser, buf, retval, false);
700 xmlParseChunk (parser, NULL, 0, true);
702 xmlDoc *doc = parser->myDoc;
703 bool well_formed = parser->wellFormed;
704 xmlFreeParserCtxt (parser);
708 char *error = ds_steal_cstr (&spv->zip_errs);
709 zip_member_finish (zm);
713 zip_member_finish (zm);
718 return xasprintf(_("%s: document is not well-formed"), member_name);
721 const xmlNode *root_node = xmlDocGetRootElement (doc);
722 assert (root_node->type == XML_ELEMENT_NODE);
723 if (strcmp (CHAR_CAST (char *, root_node->name), root_element_name))
726 return xasprintf(_("%s: root node is \"%s\" but \"%s\" was expected"),
728 CHAR_CAST (char *, root_node->name), root_element_name);
735 char * WARN_UNUSED_RESULT
736 spv_item_get_legacy_table (const struct spv_item *item, xmlDoc **docp)
738 assert (spv_item_is_legacy_table (item));
740 return spv_read_xml_member (item->spv, item->xml_member, false,
741 "visualization", docp);
744 char * WARN_UNUSED_RESULT
745 spv_item_get_structure (const struct spv_item *item, struct _xmlDoc **docp)
747 return spv_read_xml_member (item->spv, item->structure_member, false,
752 identify_item (const struct spv_item *item)
754 return (item->label ? item->label
755 : item->command_id ? item->command_id
756 : spv_item_type_to_string (item->type));
760 spv_item_format_path (const struct spv_item *item, struct string *s)
762 enum { MAX_STACK = 32 };
763 const struct spv_item *stack[MAX_STACK];
766 while (item != NULL && item->parent && n < MAX_STACK)
775 ds_put_byte (s, '/');
777 const char *name = identify_item (item);
778 ds_put_cstr (s, name);
784 for (size_t i = 0; i < item->parent->n_children; i++)
786 const struct spv_item *sibling = item->parent->children[i];
789 else if (!strcmp (name, identify_item (sibling)))
793 ds_put_format (s, "[%zu]", index);
798 static char * WARN_UNUSED_RESULT
799 pivot_table_open_legacy (struct spv_item *item)
801 assert (spv_item_is_legacy_table (item));
803 struct spv_data data;
804 char *error = spv_item_get_legacy_data (item, &data);
807 struct string s = DS_EMPTY_INITIALIZER;
808 spv_item_format_path (item, &s);
809 ds_put_format (&s, " (%s): %s", item->bin_member, error);
812 return ds_steal_cstr (&s);
816 error = spv_read_xml_member (item->spv, item->xml_member, false,
817 "visualization", &doc);
820 spv_data_uninit (&data);
824 struct spvxml_context ctx = SPVXML_CONTEXT_INIT (ctx);
825 struct spvdx_visualization *v;
826 spvdx_parse_visualization (&ctx, xmlDocGetRootElement (doc), &v);
827 error = spvxml_context_finish (&ctx, &v->node_);
830 error = decode_spvdx_table (v, item->subtype, item->legacy_properties,
831 &data, &item->table);
835 struct string s = DS_EMPTY_INITIALIZER;
836 spv_item_format_path (item, &s);
837 ds_put_format (&s, " (%s): %s", item->xml_member, error);
840 error = ds_steal_cstr (&s);
843 spv_data_uninit (&data);
844 spvdx_free_visualization (v);
852 spv_item_get_table (const struct spv_item *item_)
854 struct spv_item *item = CONST_CAST (struct spv_item *, item_);
856 assert (spv_item_is_table (item));
859 char *error = (item->xml_member
860 ? pivot_table_open_legacy (item)
861 : pivot_table_open_light (item));
865 msg (ME, "%s", error);
866 item->table = pivot_table_create_for_text (
867 pivot_value_new_text (N_("Error")),
868 pivot_value_new_user_text (error, -1));
876 /* Constructs a new spv_item from XML and stores it in *ITEMP. Returns NULL if
877 successful, otherwise an error message for the caller to use and free (with
880 XML should be a 'heading' or 'container' element. */
881 static char * WARN_UNUSED_RESULT
882 spv_decode_container (const struct spvsx_container *c,
883 const char *structure_member,
884 struct spv_item *parent)
886 struct spv_item *item = xzalloc (sizeof *item);
887 item->spv = parent->spv;
888 item->label = xstrdup (c->label->text);
889 item->visible = c->visibility == SPVSX_VISIBILITY_VISIBLE;
890 item->structure_member = xstrdup (structure_member);
892 assert (c->n_seq == 1);
893 struct spvxml_node *content = c->seq[0];
894 if (spvsx_is_container_text (content))
895 decode_container_text (spvsx_cast_container_text (content), item);
896 else if (spvsx_is_table (content))
898 item->type = SPV_ITEM_TABLE;
900 struct spvsx_table *table = spvsx_cast_table (content);
901 const struct spvsx_table_structure *ts = table->table_structure;
902 item->bin_member = xstrdup (ts->data_path->text);
903 item->command_id = xstrdup_if_nonempty (table->command_name);
904 item->subtype = xstrdup_if_nonempty (table->sub_type);
907 item->xml_member = ts->path ? xstrdup (ts->path->text) : NULL;
908 char *error = decode_spvsx_legacy_properties (
909 table->table_properties, &item->legacy_properties);
912 spv_item_destroy (item);
917 else if (spvsx_is_graph (content))
919 struct spvsx_graph *graph = spvsx_cast_graph (content);
920 item->type = SPV_ITEM_GRAPH;
921 item->command_id = xstrdup_if_nonempty (graph->command_name);
924 else if (spvsx_is_model (content))
926 struct spvsx_model *model = spvsx_cast_model (content);
927 item->type = SPV_ITEM_MODEL;
928 item->command_id = xstrdup_if_nonempty (model->command_name);
931 else if (spvsx_is_object (content))
933 struct spvsx_object *object = spvsx_cast_object (content);
934 item->type = SPV_ITEM_OBJECT;
935 item->object_type = xstrdup (object->type);
936 item->uri = xstrdup (object->uri);
938 else if (spvsx_is_image (content))
940 struct spvsx_image *image = spvsx_cast_image (content);
941 item->type = SPV_ITEM_OBJECT;
942 item->object_type = xstrdup ("image");
943 item->uri = xstrdup (image->data_path->text);
945 else if (spvsx_is_tree (content))
947 struct spvsx_tree *tree = spvsx_cast_tree (content);
948 item->type = SPV_ITEM_TREE;
949 item->object_type = xstrdup ("tree");
950 item->uri = xstrdup (tree->data_path->text);
955 spv_heading_add_child (parent, item);
959 static char * WARN_UNUSED_RESULT
960 spv_decode_children (struct spv_reader *spv, const char *structure_member,
961 struct spvxml_node **seq, size_t n_seq,
962 struct spv_item *parent)
964 for (size_t i = 0; i < n_seq; i++)
966 const struct spvxml_node *node = seq[i];
969 if (spvsx_is_container (node))
971 const struct spvsx_container *container
972 = spvsx_cast_container (node);
973 error = spv_decode_container (container, structure_member, parent);
975 else if (spvsx_is_heading (node))
977 const struct spvsx_heading *subheading = spvsx_cast_heading (node);
978 struct spv_item *subitem = xzalloc (sizeof *subitem);
979 subitem->structure_member = xstrdup (structure_member);
980 subitem->spv = parent->spv;
981 subitem->type = SPV_ITEM_HEADING;
982 subitem->label = xstrdup (subheading->label->text);
983 if (subheading->command_name)
984 subitem->command_id = xstrdup (subheading->command_name);
985 subitem->visible = !subheading->heading_visibility_present;
986 spv_heading_add_child (parent, subitem);
988 error = spv_decode_children (spv, structure_member,
989 subheading->seq, subheading->n_seq,
1002 static struct page_setup *
1003 decode_page_setup (const struct spvsx_page_setup *in, const char *file_name)
1005 struct page_setup *out = xmalloc (sizeof *out);
1006 *out = (struct page_setup) PAGE_SETUP_INITIALIZER;
1008 out->initial_page_number = in->initial_page_number;
1010 if (in->paper_width != DBL_MAX)
1011 out->paper[TABLE_HORZ] = in->paper_width;
1012 if (in->paper_height != DBL_MAX)
1013 out->paper[TABLE_VERT] = in->paper_height;
1015 if (in->margin_left != DBL_MAX)
1016 out->margins[TABLE_HORZ][0] = in->margin_left;
1017 if (in->margin_right != DBL_MAX)
1018 out->margins[TABLE_HORZ][1] = in->margin_right;
1019 if (in->margin_top != DBL_MAX)
1020 out->margins[TABLE_VERT][0] = in->margin_top;
1021 if (in->margin_bottom != DBL_MAX)
1022 out->margins[TABLE_VERT][1] = in->margin_bottom;
1024 if (in->space_after != DBL_MAX)
1025 out->object_spacing = in->space_after;
1028 out->chart_size = (in->chart_size == SPVSX_CHART_SIZE_FULL_HEIGHT
1029 ? PAGE_CHART_FULL_HEIGHT
1030 : in->chart_size == SPVSX_CHART_SIZE_HALF_HEIGHT
1031 ? PAGE_CHART_HALF_HEIGHT
1032 : in->chart_size == SPVSX_CHART_SIZE_QUARTER_HEIGHT
1033 ? PAGE_CHART_QUARTER_HEIGHT
1034 : PAGE_CHART_AS_IS);
1036 decode_page_paragraph (in->page_header->page_paragraph, &out->headings[0]);
1037 decode_page_paragraph (in->page_footer->page_paragraph, &out->headings[1]);
1039 out->file_name = xstrdup (file_name);
1044 static char * WARN_UNUSED_RESULT
1045 spv_heading_read (struct spv_reader *spv,
1046 const char *file_name, const char *member_name)
1049 char *error = spv_read_xml_member (spv, member_name, true, "heading", &doc);
1053 struct spvxml_context ctx = SPVXML_CONTEXT_INIT (ctx);
1054 struct spvsx_root_heading *root;
1055 spvsx_parse_root_heading (&ctx, xmlDocGetRootElement (doc), &root);
1056 error = spvxml_context_finish (&ctx, &root->node_);
1058 if (!error && root->page_setup)
1059 spv->page_setup = decode_page_setup (root->page_setup, file_name);
1061 for (size_t i = 0; !error && i < root->n_seq; i++)
1062 error = spv_decode_children (spv, member_name, root->seq, root->n_seq,
1067 char *s = xasprintf ("%s: %s", member_name, error);
1072 spvsx_free_root_heading (root);
1079 spv_get_root (const struct spv_reader *spv)
1085 spv_detect__ (struct zip_reader *zip, char **errorp)
1089 const char *member = "META-INF/MANIFEST.MF";
1090 if (!zip_reader_contains_member (zip, member))
1095 *errorp = zip_member_read_all (zip, "META-INF/MANIFEST.MF",
1100 const char *magic = "allowPivoting=true";
1101 bool is_spv = size == strlen (magic) && !memcmp (magic, data, size);
1107 /* Returns NULL if FILENAME is an SPV file, otherwise an error string that the
1108 caller must eventually free(). */
1109 char * WARN_UNUSED_RESULT
1110 spv_detect (const char *filename)
1112 struct string zip_error;
1113 struct zip_reader *zip = zip_reader_create (filename, &zip_error);
1115 return ds_steal_cstr (&zip_error);
1118 if (spv_detect__ (zip, &error) <= 0 && !error)
1119 error = xasprintf("%s: not an SPV file", filename);
1120 zip_reader_destroy (zip);
1121 ds_destroy (&zip_error);
1125 char * WARN_UNUSED_RESULT
1126 spv_open (const char *filename, struct spv_reader **spvp)
1130 struct spv_reader *spv = xzalloc (sizeof *spv);
1131 ds_init_empty (&spv->zip_errs);
1132 spv->zip = zip_reader_create (filename, &spv->zip_errs);
1135 char *error = ds_steal_cstr (&spv->zip_errs);
1141 int detect = spv_detect__ (spv->zip, &error);
1145 return error ? error : xasprintf("%s: not an SPV file", filename);
1148 spv->root = xzalloc (sizeof *spv->root);
1149 spv->root->spv = spv;
1150 spv->root->type = SPV_ITEM_HEADING;
1151 for (size_t i = 0; ; i++)
1153 const char *member_name = zip_reader_get_member_name (spv->zip, i);
1157 struct substring member_name_ss = ss_cstr (member_name);
1158 if (ss_starts_with (member_name_ss, ss_cstr ("outputViewer"))
1159 && ss_ends_with (member_name_ss, ss_cstr (".xml")))
1161 char *error = spv_heading_read (spv, filename, member_name);
1175 spv_close (struct spv_reader *spv)
1179 ds_destroy (&spv->zip_errs);
1180 zip_reader_destroy (spv->zip);
1181 spv_item_destroy (spv->root);
1182 page_setup_destroy (spv->page_setup);
1187 char * WARN_UNUSED_RESULT
1188 spv_decode_fmt_spec (uint32_t u32, struct fmt_spec *out)
1191 || (u32 == 0x10000 || u32 == 1 /* both used as string formats */))
1193 *out = fmt_for_output (FMT_F, 40, 2);
1197 uint8_t raw_type = u32 >> 16;
1198 uint8_t w = u32 >> 8;
1202 *out = (struct fmt_spec) { .type = FMT_F, .w = w, .d = d };
1203 bool ok = raw_type >= 40 || fmt_from_io (raw_type, &out->type);
1206 fmt_fix_output (out);
1207 ok = fmt_check_width_compat (out, 0);
1213 *out = fmt_for_output (FMT_F, 40, 2);
1214 return xasprintf ("bad format %#"PRIx32, u32);