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_OUTLINEHEADERS;
126 return (!strcmp (label, "Title") ? SPV_CLASS_HEADINGS
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_UNKNOWN;
151 spv_item_get_label (const struct spv_item *item)
157 spv_item_is_heading (const struct spv_item *item)
159 return item->type == SPV_ITEM_HEADING;
163 spv_item_get_n_children (const struct spv_item *item)
165 return item->n_children;
169 spv_item_get_child (const struct spv_item *item, size_t idx)
171 assert (idx < item->n_children);
172 return item->children[idx];
176 spv_item_is_table (const struct spv_item *item)
178 return item->type == SPV_ITEM_TABLE;
182 spv_item_is_text (const struct spv_item *item)
184 return item->type == SPV_ITEM_TEXT;
187 const struct pivot_value *
188 spv_item_get_text (const struct spv_item *item)
190 assert (spv_item_is_text (item));
195 spv_item_next (const struct spv_item *item)
197 if (item->n_children)
198 return item->children[0];
202 size_t idx = item->parent_idx + 1;
204 if (idx < item->n_children)
205 return item->children[idx];
211 const struct spv_item *
212 spv_item_get_parent (const struct spv_item *item)
218 spv_item_get_level (const struct spv_item *item)
221 for (; item->parent; item = item->parent)
227 spv_item_get_command_id (const struct spv_item *item)
229 return item->command_id;
233 spv_item_get_subtype (const struct spv_item *item)
235 return item->subtype;
239 spv_item_is_visible (const struct spv_item *item)
241 return item->visible;
245 spv_item_destroy (struct spv_item *item)
249 free (item->structure_member);
252 free (item->command_id);
254 for (size_t i = 0; i < item->n_children; i++)
255 spv_item_destroy (item->children[i]);
256 free (item->children);
258 pivot_table_unref (item->table);
259 spv_legacy_properties_destroy (item->legacy_properties);
260 free (item->bin_member);
261 free (item->xml_member);
262 free (item->subtype);
264 pivot_value_destroy (item->text);
266 free (item->object_type);
274 spv_heading_add_child (struct spv_item *parent, struct spv_item *child)
276 assert (parent->type == SPV_ITEM_HEADING);
277 assert (!child->parent);
279 child->parent = parent;
280 child->parent_idx = parent->n_children;
282 if (parent->n_children >= parent->allocated_children)
283 parent->children = x2nrealloc (parent->children,
284 &parent->allocated_children,
285 sizeof *parent->children);
286 parent->children[parent->n_children++] = child;
290 find_xml_child_element (xmlNode *parent, const char *child_name)
292 for (xmlNode *node = parent->children; node; node = node->next)
293 if (node->type == XML_ELEMENT_NODE
295 && !strcmp (CHAR_CAST (char *, node->name), child_name))
302 get_xml_attr (const xmlNode *node, const char *name)
304 return CHAR_CAST (char *, xmlGetProp (node, CHAR_CAST (xmlChar *, name)));
308 put_xml_attr (const char *name, const char *value, struct string *dst)
313 ds_put_format (dst, " %s=\"", name);
314 for (const char *p = value; *p; p++)
319 ds_put_cstr (dst, " ");
322 ds_put_cstr (dst, "&");
325 ds_put_cstr (dst, "<");
328 ds_put_cstr (dst, ">");
331 ds_put_cstr (dst, """);
334 ds_put_byte (dst, *p);
338 ds_put_byte (dst, '"');
342 extract_html_text (const xmlNode *node, int base_font_size, struct string *s)
344 if (node->type == XML_ELEMENT_NODE)
346 const char *name = CHAR_CAST (char *, node->name);
347 if (!strcmp (name, "br"))
348 ds_put_byte (s, '\n');
349 else if (strcmp (name, "style"))
351 const char *tag = NULL;
352 if (strchr ("biu", name[0]) && name[1] == '\0')
355 ds_put_format (s, "<%s>", tag);
357 else if (!strcmp (name, "font"))
360 ds_put_format (s, "<%s", tag);
362 char *face = get_xml_attr (node, "face");
363 put_xml_attr ("face", face, s);
366 char *color = get_xml_attr (node, "color");
370 put_xml_attr ("color", color, s);
374 if (sscanf (color, "rgb (%"SCNu8", %"SCNu8", %"SCNu8" )",
378 snprintf (color2, sizeof color2,
379 "#%02"PRIx8"%02"PRIx8"%02"PRIx8,
381 put_xml_attr ("color", color2, s);
387 char *size_s = get_xml_attr (node, "size");
388 int html_size = size_s ? atoi (size_s) : 0;
390 if (html_size >= 1 && html_size <= 7)
392 static const double scale[7] = {
393 .444, .556, .667, .778, 1.0, 1.33, 2.0
395 double size = base_font_size * scale[html_size - 1];
397 char size2[INT_BUFSIZE_BOUND (int)];
398 snprintf (size2, sizeof size2, "%.0f", size * 1024.);
399 put_xml_attr ("size", size2, s);
402 ds_put_cstr (s, ">");
404 for (const xmlNode *child = node->children; child;
406 extract_html_text (child, base_font_size, s);
408 ds_put_format (s, "</%s>", tag);
411 else if (node->type == XML_TEXT_NODE)
413 /* U+00A0 NONBREAKING SPACE is really, really common in SPV text and it
414 makes it impossible to break syntax across lines. Translate it into a
415 regular space. (Note that U+00A0 is C2 A0 in UTF-8.)
417 Do the same for U+2007 FIGURE SPACE, which also crops out weirdly
419 ds_extend (s, ds_length (s) + xmlStrlen (node->content));
420 for (const uint8_t *p = node->content; *p; )
423 if (p[0] == 0xc2 && p[1] == 0xa0)
428 else if (p[0] == 0xe2 && p[1] == 0x80 && p[2] == 0x87)
438 int last = ds_last (s);
439 if (last != EOF && !c_isspace (last))
443 ds_put_cstr (s, "<");
445 ds_put_cstr (s, ">");
447 ds_put_cstr (s, "&");
455 parse_embedded_html (const xmlNode *node)
457 /* Extract HTML from XML node. */
458 char *html_s = CHAR_CAST (char *, xmlNodeGetContent (node));
462 xmlDoc *html_doc = htmlReadMemory (
463 html_s, strlen (html_s),
464 NULL, "UTF-8", (HTML_PARSE_RECOVER | HTML_PARSE_NOERROR
465 | HTML_PARSE_NOWARNING | HTML_PARSE_NOBLANKS
466 | HTML_PARSE_NONET));
472 /* Given NODE, which should contain HTML content, returns the text within that
473 content as an allocated string. The caller must eventually free the
474 returned string (with xmlFree()). */
476 decode_embedded_html (const xmlNode *node, struct font_style *font_style)
478 struct string markup = DS_EMPTY_INITIALIZER;
479 *font_style = (struct font_style) FONT_STYLE_INITIALIZER;
480 font_style->size = 10;
482 xmlDoc *html_doc = parse_embedded_html (node);
485 xmlNode *root = xmlDocGetRootElement (html_doc);
486 xmlNode *head = root ? find_xml_child_element (root, "head") : NULL;
487 xmlNode *style = head ? find_xml_child_element (head, "style") : NULL;
490 uint8_t *style_s = xmlNodeGetContent (style);
491 spv_parse_css_style (CHAR_CAST (char *, style_s), font_style);
496 extract_html_text (root, font_style->size, &markup);
497 xmlFreeDoc (html_doc);
500 font_style->markup = true;
501 return ds_steal_cstr (&markup);
505 xstrdup_if_nonempty (const char *s)
507 return s && s[0] ? xstrdup (s) : NULL;
511 decode_container_text (const struct spvsx_container_text *ct,
512 struct spv_item *item)
514 item->type = SPV_ITEM_TEXT;
515 item->command_id = xstrdup_if_nonempty (ct->command_name);
517 item->text = xzalloc (sizeof *item->text);
518 item->text->type = PIVOT_VALUE_TEXT;
519 item->text->font_style = xmalloc (sizeof *item->text->font_style);
520 item->text->text.local = decode_embedded_html (ct->html->node_.raw,
521 item->text->font_style);
525 decode_page_p (const xmlNode *in, struct page_paragraph *out)
527 char *style = get_xml_attr (in, "style");
528 out->halign = (style && strstr (style, "center") ? TABLE_HALIGN_CENTER
529 : style && strstr (style, "right") ? TABLE_HALIGN_RIGHT
530 : TABLE_HALIGN_LEFT);
533 struct font_style font_style;
534 out->markup = decode_embedded_html (in, &font_style);
535 font_style_uninit (&font_style);
539 decode_page_paragraph (const struct spvsx_page_paragraph *page_paragraph,
540 struct page_heading *ph)
542 memset (ph, 0, sizeof *ph);
544 const struct spvsx_page_paragraph_text *page_paragraph_text
545 = page_paragraph->page_paragraph_text;
546 if (!page_paragraph_text)
549 xmlDoc *html_doc = parse_embedded_html (page_paragraph_text->node_.raw);
553 xmlNode *root = xmlDocGetRootElement (html_doc);
554 xmlNode *body = find_xml_child_element (root, "body");
556 for (const xmlNode *node = body->children; node; node = node->next)
557 if (node->type == XML_ELEMENT_NODE
558 && !strcmp (CHAR_CAST (const char *, node->name), "p"))
560 ph->paragraphs = xrealloc (ph->paragraphs,
561 (ph->n + 1) * sizeof *ph->paragraphs);
562 decode_page_p (node, &ph->paragraphs[ph->n++]);
564 xmlFreeDoc (html_doc);
568 spv_item_load (const struct spv_item *item)
570 if (spv_item_is_table (item))
571 spv_item_get_table (item);
575 spv_item_is_light_table (const struct spv_item *item)
577 return item->type == SPV_ITEM_TABLE && !item->xml_member;
580 char * WARN_UNUSED_RESULT
581 spv_item_get_raw_light_table (const struct spv_item *item,
582 void **data, size_t *size)
584 return zip_member_read_all (item->spv->zip, item->bin_member, data, size);
587 char * WARN_UNUSED_RESULT
588 spv_item_get_light_table (const struct spv_item *item,
589 struct spvlb_table **tablep)
593 if (!spv_item_is_light_table (item))
594 return xstrdup ("not a light binary table object");
598 char *error = spv_item_get_raw_light_table (item, &data, &size);
602 struct spvbin_input input;
603 spvbin_input_init (&input, data, size);
606 struct spvlb_header *header;
607 if (!spvlb_parse_header (&input, &header))
608 return xstrdup("bad header");
609 spvlb_print_header ("file", 0, header);
611 struct spvlb_titles *titles;
612 if (!spvlb_parse_titles (&input, &titles))
613 return xstrdup("bad titles");
614 spvlb_print_titles ("file", 0, titles);
616 struct spvlb_footnotes *footnotes;
617 if (!spvlb_parse_footnotes (&input, &footnotes))
618 return xstrdup("bad footnotes");
619 spvlb_print_footnotes ("file", 0, footnotes);
621 struct spvlb_areas *areas;
622 if (!spvlb_parse_areas (&input, &areas))
623 return xstrdup("bad areas");
624 spvlb_print_areas ("file", 0, areas);
626 struct spvlb_borders *borders;
627 if (!spvlb_parse_borders (&input, &borders))
628 return xstrdup("bad borders");
629 spvlb_print_borders ("file", 0, borders);
631 struct spvlb_print_settings *print_settings;
632 if (!spvlb_parse_print_settings (&input, &print_settings))
633 return xstrdup("bad print_settings");
634 spvlb_print_print_settings ("file", 0, print_settings);
636 struct spvlb_table_settings *table_settings;
637 if (!spvlb_parse_table_settings (&input, &table_settings))
638 return xstrdup("bad table_settings");
639 spvlb_print_table_settings ("file", 0, table_settings);
643 struct spvlb_table *table;
644 error = (!spvlb_parse_table (&input, &table)
645 ? spvbin_input_to_error (&input, item->bin_member)
646 : input.ofs != input.size
647 ? xasprintf ("%s: expected end of file at offset %#zx",
648 item->bin_member, input.ofs)
657 pivot_table_open_light (struct spv_item *item)
659 assert (spv_item_is_light_table (item));
661 struct spvlb_table *raw_table;
662 char *error = spv_item_get_light_table (item, &raw_table);
664 error = decode_spvlb_table (raw_table, &item->table);
665 spvlb_free_table (raw_table);
671 spv_item_is_legacy_table (const struct spv_item *item)
673 return item->type == SPV_ITEM_TABLE && item->xml_member;
676 char * WARN_UNUSED_RESULT
677 spv_item_get_raw_legacy_data (const struct spv_item *item,
678 void **data, size_t *size)
680 if (!spv_item_is_legacy_table (item))
681 return xstrdup ("not a legacy table object");
683 return zip_member_read_all (item->spv->zip, item->bin_member, data, size);
686 char * WARN_UNUSED_RESULT
687 spv_item_get_legacy_data (const struct spv_item *item, struct spv_data *data)
691 char *error = spv_item_get_raw_legacy_data (item, &raw, &size);
694 error = spv_legacy_data_decode (raw, size, data);
701 static char * WARN_UNUSED_RESULT
702 spv_read_xml_member (struct spv_reader *spv, const char *member_name,
703 bool keep_blanks, const char *root_element_name,
708 struct zip_member *zm = zip_member_open (spv->zip, member_name);
710 return ds_steal_cstr (&spv->zip_errs);
712 xmlParserCtxt *parser;
713 xmlKeepBlanksDefault (keep_blanks);
714 parser = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL);
717 zip_member_finish (zm);
718 return xasprintf (_("%s: Failed to create XML parser"), member_name);
723 while ((retval = zip_member_read (zm, buf, sizeof buf)) > 0)
724 xmlParseChunk (parser, buf, retval, false);
725 xmlParseChunk (parser, NULL, 0, true);
727 xmlDoc *doc = parser->myDoc;
728 bool well_formed = parser->wellFormed;
729 xmlFreeParserCtxt (parser);
733 char *error = ds_steal_cstr (&spv->zip_errs);
734 zip_member_finish (zm);
738 zip_member_finish (zm);
743 return xasprintf(_("%s: document is not well-formed"), member_name);
746 const xmlNode *root_node = xmlDocGetRootElement (doc);
747 assert (root_node->type == XML_ELEMENT_NODE);
748 if (strcmp (CHAR_CAST (char *, root_node->name), root_element_name))
751 return xasprintf(_("%s: root node is \"%s\" but \"%s\" was expected"),
753 CHAR_CAST (char *, root_node->name), root_element_name);
760 char * WARN_UNUSED_RESULT
761 spv_item_get_legacy_table (const struct spv_item *item, xmlDoc **docp)
763 assert (spv_item_is_legacy_table (item));
765 return spv_read_xml_member (item->spv, item->xml_member, false,
766 "visualization", docp);
769 char * WARN_UNUSED_RESULT
770 spv_item_get_structure (const struct spv_item *item, struct _xmlDoc **docp)
772 return spv_read_xml_member (item->spv, item->structure_member, false,
776 static char * WARN_UNUSED_RESULT
777 pivot_table_open_legacy (struct spv_item *item)
779 assert (spv_item_is_legacy_table (item));
781 struct spv_data data;
782 char *error = spv_item_get_legacy_data (item, &data);
785 char *s = xasprintf ("%s: %s", item->bin_member, error);
791 error = spv_read_xml_member (item->spv, item->xml_member, false,
792 "visualization", &doc);
795 spv_data_uninit (&data);
799 struct spvxml_context ctx = SPVXML_CONTEXT_INIT (ctx);
800 struct spvdx_visualization *v;
801 spvdx_parse_visualization (&ctx, xmlDocGetRootElement (doc), &v);
802 error = spvxml_context_finish (&ctx, &v->node_);
805 error = decode_spvdx_table (v, item->legacy_properties, &data,
810 char *s = xasprintf ("%s: %s", item->xml_member, error);
815 spv_data_uninit (&data);
816 spvdx_free_visualization (v);
824 spv_item_get_table (const struct spv_item *item_)
826 struct spv_item *item = CONST_CAST (struct spv_item *, item_);
828 assert (spv_item_is_table (item));
831 char *error = (item->xml_member
832 ? pivot_table_open_legacy (item)
833 : pivot_table_open_light (item));
837 msg (ME, "%s", error);
838 item->table = pivot_table_create_for_text (
839 pivot_value_new_text (N_("Error")),
840 pivot_value_new_user_text (error, -1));
848 /* Constructs a new spv_item from XML and stores it in *ITEMP. Returns NULL if
849 successful, otherwise an error message for the caller to use and free (with
852 XML should be a 'heading' or 'container' element. */
853 static char * WARN_UNUSED_RESULT
854 spv_decode_container (const struct spvsx_container *c,
855 const char *structure_member,
856 struct spv_item *parent)
858 struct spv_item *item = xzalloc (sizeof *item);
859 item->spv = parent->spv;
860 item->label = xstrdup (c->label->text);
861 item->visible = c->visibility == SPVSX_VISIBILITY_VISIBLE;
862 item->structure_member = xstrdup (structure_member);
864 assert (c->n_seq == 1);
865 struct spvxml_node *content = c->seq[0];
866 if (spvsx_is_container_text (content))
867 decode_container_text (spvsx_cast_container_text (content), item);
868 else if (spvsx_is_table (content))
870 item->type = SPV_ITEM_TABLE;
872 struct spvsx_table *table = spvsx_cast_table (content);
873 const struct spvsx_table_structure *ts = table->table_structure;
874 item->bin_member = xstrdup (ts->data_path->text);
875 item->command_id = xstrdup_if_nonempty (table->command_name);
878 item->xml_member = ts->path ? xstrdup (ts->path->text) : NULL;
879 char *error = decode_spvsx_legacy_properties (
880 table->table_properties, &item->legacy_properties);
883 spv_item_destroy (item);
888 else if (spvsx_is_graph (content))
890 struct spvsx_graph *graph = spvsx_cast_graph (content);
891 item->type = SPV_ITEM_GRAPH;
892 item->command_id = xstrdup_if_nonempty (graph->command_name);
895 else if (spvsx_is_model (content))
897 struct spvsx_model *model = spvsx_cast_model (content);
898 item->type = SPV_ITEM_MODEL;
899 item->command_id = xstrdup_if_nonempty (model->command_name);
902 else if (spvsx_is_object (content))
904 struct spvsx_object *object = spvsx_cast_object (content);
905 item->type = SPV_ITEM_OBJECT;
906 item->object_type = xstrdup (object->type);
907 item->uri = xstrdup (object->uri);
909 else if (spvsx_is_image (content))
911 struct spvsx_image *image = spvsx_cast_image (content);
912 item->type = SPV_ITEM_OBJECT;
913 item->object_type = xstrdup ("image");
914 item->uri = xstrdup (image->data_path->text);
919 spv_heading_add_child (parent, item);
923 static char * WARN_UNUSED_RESULT
924 spv_decode_children (struct spv_reader *spv, const char *structure_member,
925 struct spvxml_node **seq, size_t n_seq,
926 struct spv_item *parent)
928 for (size_t i = 0; i < n_seq; i++)
930 const struct spvxml_node *node = seq[i];
933 if (spvsx_is_container (node))
935 const struct spvsx_container *container
936 = spvsx_cast_container (node);
937 error = spv_decode_container (container, structure_member, parent);
939 else if (spvsx_is_heading (node))
941 const struct spvsx_heading *subheading = spvsx_cast_heading (node);
942 struct spv_item *subitem = xzalloc (sizeof *subitem);
943 subitem->structure_member = xstrdup (structure_member);
944 subitem->spv = parent->spv;
945 subitem->type = SPV_ITEM_HEADING;
946 subitem->label = xstrdup (subheading->label->text);
947 if (subheading->command_name)
948 subitem->command_id = xstrdup (subheading->command_name);
949 subitem->visible = !subheading->heading_visibility_present;
950 spv_heading_add_child (parent, subitem);
952 error = spv_decode_children (spv, structure_member,
953 subheading->seq, subheading->n_seq,
966 static struct page_setup *
967 decode_page_setup (const struct spvsx_page_setup *in, const char *file_name)
969 struct page_setup *out = xmalloc (sizeof *out);
970 *out = (struct page_setup) PAGE_SETUP_INITIALIZER;
972 out->initial_page_number = in->initial_page_number;
974 if (in->paper_width != DBL_MAX)
975 out->paper[TABLE_HORZ] = in->paper_width;
976 if (in->paper_height != DBL_MAX)
977 out->paper[TABLE_VERT] = in->paper_height;
979 if (in->margin_left != DBL_MAX)
980 out->margins[TABLE_HORZ][0] = in->margin_left;
981 if (in->margin_right != DBL_MAX)
982 out->margins[TABLE_HORZ][1] = in->margin_right;
983 if (in->margin_top != DBL_MAX)
984 out->margins[TABLE_VERT][0] = in->margin_top;
985 if (in->margin_bottom != DBL_MAX)
986 out->margins[TABLE_VERT][1] = in->margin_bottom;
988 if (in->space_after != DBL_MAX)
989 out->object_spacing = in->space_after;
992 out->chart_size = (in->chart_size == SPVSX_CHART_SIZE_FULL_HEIGHT
993 ? PAGE_CHART_FULL_HEIGHT
994 : in->chart_size == SPVSX_CHART_SIZE_HALF_HEIGHT
995 ? PAGE_CHART_HALF_HEIGHT
996 : in->chart_size == SPVSX_CHART_SIZE_QUARTER_HEIGHT
997 ? PAGE_CHART_QUARTER_HEIGHT
1000 decode_page_paragraph (in->page_header->page_paragraph, &out->headings[0]);
1001 decode_page_paragraph (in->page_footer->page_paragraph, &out->headings[1]);
1003 out->file_name = xstrdup (file_name);
1008 static char * WARN_UNUSED_RESULT
1009 spv_heading_read (struct spv_reader *spv,
1010 const char *file_name, const char *member_name)
1013 char *error = spv_read_xml_member (spv, member_name, true, "heading", &doc);
1017 struct spvxml_context ctx = SPVXML_CONTEXT_INIT (ctx);
1018 struct spvsx_root_heading *root;
1019 spvsx_parse_root_heading (&ctx, xmlDocGetRootElement (doc), &root);
1020 error = spvxml_context_finish (&ctx, &root->node_);
1022 if (!error && root->page_setup)
1023 spv->page_setup = decode_page_setup (root->page_setup, file_name);
1025 for (size_t i = 0; !error && i < root->n_seq; i++)
1026 error = spv_decode_children (spv, member_name, root->seq, root->n_seq,
1031 char *s = xasprintf ("%s: %s", member_name, error);
1036 spvsx_free_root_heading (root);
1043 spv_get_root (const struct spv_reader *spv)
1049 spv_detect__ (struct zip_reader *zip, char **errorp)
1053 const char *member = "META-INF/MANIFEST.MF";
1054 if (!zip_reader_contains_member (zip, member))
1059 *errorp = zip_member_read_all (zip, "META-INF/MANIFEST.MF",
1064 const char *magic = "allowPivoting=true";
1065 bool is_spv = size == strlen (magic) && !memcmp (magic, data, size);
1071 /* Returns NULL if FILENAME is an SPV file, otherwise an error string that the
1072 caller must eventually free(). */
1073 char * WARN_UNUSED_RESULT
1074 spv_detect (const char *filename)
1076 struct string zip_error;
1077 struct zip_reader *zip = zip_reader_create (filename, &zip_error);
1079 return ds_steal_cstr (&zip_error);
1082 if (spv_detect__ (zip, &error) <= 0 && !error)
1083 error = xasprintf("%s: not an SPV file", filename);
1084 zip_reader_destroy (zip);
1085 ds_destroy (&zip_error);
1090 char * WARN_UNUSED_RESULT
1091 spv_open (const char *filename, struct spv_reader **spvp)
1095 struct spv_reader *spv = xzalloc (sizeof *spv);
1096 ds_init_empty (&spv->zip_errs);
1097 spv->zip = zip_reader_create (filename, &spv->zip_errs);
1100 char *error = ds_steal_cstr (&spv->zip_errs);
1106 int detect = spv_detect__ (spv->zip, &error);
1110 return error ? error : xasprintf("%s: not an SPV file", filename);
1113 spv->root = xzalloc (sizeof *spv->root);
1114 spv->root->spv = spv;
1115 spv->root->type = SPV_ITEM_HEADING;
1116 for (size_t i = 0; ; i++)
1118 const char *member_name = zip_reader_get_member_name (spv->zip, i);
1122 struct substring member_name_ss = ss_cstr (member_name);
1123 if (ss_starts_with (member_name_ss, ss_cstr ("outputViewer"))
1124 && ss_ends_with (member_name_ss, ss_cstr (".xml")))
1126 char *error = spv_heading_read (spv, filename, member_name);
1140 spv_close (struct spv_reader *spv)
1144 ds_destroy (&spv->zip_errs);
1145 zip_reader_destroy (spv->zip);
1146 spv_item_destroy (spv->root);
1147 page_setup_destroy (spv->page_setup);
1153 spv_decode_fmt_spec (uint32_t u32)
1156 || (u32 == 0x10000 || u32 == 1 /* both used as string formats */))
1157 return fmt_for_output (FMT_F, 40, 2);
1159 uint8_t raw_type = u32 >> 16;
1160 uint8_t w = u32 >> 8;
1164 struct fmt_spec spec = { .type = FMT_F, .w = w, .d = d };
1165 bool ok = raw_type >= 40 || fmt_from_io (raw_type, &spec.type);
1168 fmt_fix_output (&spec);
1169 ok = fmt_check_width_compat (&spec, 0);
1175 fprintf (stderr, "bad format %#"PRIx32"\n", u32); /* XXX */
1176 spec = fmt_for_output (FMT_F, 40, 2);