1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2011, 2012, 2013 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 "libpspp/message.h"
20 #include "libpspp/misc.h"
21 #include "libpspp/assertion.h"
23 #include "data/data-in.h"
25 #include "gl/c-strtod.h"
26 #include "gl/minmax.h"
29 #define _(msgid) gettext (msgid)
30 #define N_(msgid) (msgid)
32 #include "ods-reader.h"
33 #include "spreadsheet-reader.h"
38 ods_open_reader (const struct spreadsheet_read_options *opts,
39 struct dictionary **dict)
41 msg (ME, _("Support for %s files was not compiled into this installation of PSPP"), "OpenDocument");
48 #include "libpspp/zip-reader.h"
54 #include <libxml/xmlreader.h>
57 #include "data/format.h"
58 #include "data/case.h"
59 #include "data/casereader-provider.h"
60 #include "data/dictionary.h"
61 #include "data/identifier.h"
62 #include "data/value.h"
63 #include "data/variable.h"
64 #include "libpspp/i18n.h"
65 #include "libpspp/str.h"
67 #include "gl/xalloc.h"
69 static void ods_file_casereader_destroy (struct casereader *, void *);
71 static struct ccase *ods_file_casereader_read (struct casereader *, void *);
73 static const struct casereader_class ods_file_casereader_class =
75 ods_file_casereader_read,
76 ods_file_casereader_destroy,
83 /* The name of the sheet (utf8 encoding) */
95 STATE_INIT = 0, /* Initial state */
96 STATE_SPREADSHEET, /* Found the start of the spreadsheet doc */
97 STATE_TABLE, /* Found the sheet that we actually want */
98 STATE_ROW, /* Found the start of the cell array */
99 STATE_CELL, /* Found a cell */
100 STATE_CELL_CONTENT /* Found a the text within a cell */
105 struct spreadsheet spreadsheet;
106 struct zip_reader *zreader;
107 xmlTextReaderPtr xtr;
109 enum reader_state state;
114 xmlChar *current_sheet_name;
116 const xmlChar *target_sheet_name;
117 int target_sheet_index;
127 struct sheet_detail *sheets;
128 int n_allocated_sheets;
130 struct caseproto *proto;
131 struct dictionary *dict;
132 struct ccase *first_case;
133 bool used_first_case;
136 struct string ods_errs;
141 reading_target_sheet (const struct ods_reader *r)
143 if (r->target_sheet_name != NULL)
145 if ( 0 == xmlStrcmp (r->target_sheet_name, r->current_sheet_name))
149 if (r->target_sheet_index == r->current_sheet + 1)
156 static void process_node (struct ods_reader *r);
160 ods_get_sheet_name (struct spreadsheet *s, int n)
162 struct ods_reader *or = (struct ods_reader *) s;
164 assert (n < s->n_sheets);
167 (or->n_allocated_sheets <= n)
168 || or->state != STATE_SPREADSHEET
171 int ret = xmlTextReaderRead (or->xtr);
178 return or->sheets[n].name;
182 ods_get_sheet_range (struct spreadsheet *s, int n)
184 struct ods_reader *or = (struct ods_reader *) s;
186 assert (n < s->n_sheets);
189 (or->n_allocated_sheets <= n)
190 || (or->sheets[n].stop_row == -1)
191 || or->state != STATE_SPREADSHEET
194 int ret = xmlTextReaderRead (or->xtr);
201 return create_cell_ref (
202 or->sheets[n].start_col,
203 or->sheets[n].start_row,
204 or->sheets[n].stop_col,
205 or->sheets[n].stop_row);
210 ods_file_casereader_destroy (struct casereader *reader UNUSED, void *r_)
212 struct ods_reader *r = r_;
217 xmlFreeTextReader (r->xtr);
220 if ( ! ds_is_empty (&r->ods_errs))
221 msg (ME, "%s", ds_cstr (&r->ods_errs));
223 ds_destroy (&r->ods_errs);
225 if ( ! r->used_first_case )
226 case_unref (r->first_case);
228 caseproto_unref (r->proto);
234 process_node (struct ods_reader *r)
236 xmlChar *name = xmlTextReaderName (r->xtr);
238 name = xmlStrdup (_xml ("--"));
241 r->node_type = xmlTextReaderNodeType (r->xtr);
246 if (0 == xmlStrcasecmp (name, _xml("office:spreadsheet")) &&
247 XML_READER_TYPE_ELEMENT == r->node_type)
249 r->state = STATE_SPREADSHEET;
250 r->current_sheet = -1;
251 r->current_sheet_name = NULL;
254 case STATE_SPREADSHEET:
255 if (0 == xmlStrcasecmp (name, _xml("table:table"))
257 (XML_READER_TYPE_ELEMENT == r->node_type))
259 xmlFree (r->current_sheet_name);
260 r->current_sheet_name = xmlTextReaderGetAttribute (r->xtr, _xml ("table:name"));
264 if (r->current_sheet >= r->n_allocated_sheets)
266 assert (r->current_sheet == r->n_allocated_sheets);
267 r->sheets = xrealloc (r->sheets, sizeof (*r->sheets) * ++r->n_allocated_sheets);
268 r->sheets[r->n_allocated_sheets - 1].start_col = -1;
269 r->sheets[r->n_allocated_sheets - 1].stop_col = -1;
270 r->sheets[r->n_allocated_sheets - 1].start_row = -1;
271 r->sheets[r->n_allocated_sheets - 1].stop_row = -1;
272 r->sheets[r->n_allocated_sheets - 1].name = CHAR_CAST (char *, xmlStrdup (r->current_sheet_name));
278 r->state = STATE_TABLE;
280 else if (0 == xmlStrcasecmp (name, _xml("office:spreadsheet")) &&
281 XML_READER_TYPE_ELEMENT == r->node_type)
283 r->state = STATE_INIT;
287 if (0 == xmlStrcasecmp (name, _xml("table:table-row")) &&
288 (XML_READER_TYPE_ELEMENT == r->node_type))
291 xmlTextReaderGetAttribute (r->xtr,
292 _xml ("table:number-rows-repeated"));
294 int row_span = value ? _xmlchar_to_int (value) : 1;
299 if (! xmlTextReaderIsEmptyElement (r->xtr))
300 r->state = STATE_ROW;
302 else if (0 == xmlStrcasecmp (name, _xml("table:table")) &&
303 (XML_READER_TYPE_END_ELEMENT == r->node_type))
305 r->state = STATE_SPREADSHEET;
309 if ( (0 == xmlStrcasecmp (name, _xml ("table:table-cell")))
311 (XML_READER_TYPE_ELEMENT == r->node_type))
314 xmlTextReaderGetAttribute (r->xtr,
315 _xml ("table:number-columns-repeated"));
317 r->col_span = value ? _xmlchar_to_int (value) : 1;
318 r->col += r->col_span;
320 if (! xmlTextReaderIsEmptyElement (r->xtr))
321 r->state = STATE_CELL;
325 else if ( (0 == xmlStrcasecmp (name, _xml ("table:table-row")))
327 (XML_READER_TYPE_END_ELEMENT == r->node_type))
329 r->state = STATE_TABLE;
333 if ( (0 == xmlStrcasecmp (name, _xml("text:p")))
335 ( XML_READER_TYPE_ELEMENT == r->node_type))
337 if (! xmlTextReaderIsEmptyElement (r->xtr))
338 r->state = STATE_CELL_CONTENT;
341 ( (0 == xmlStrcasecmp (name, _xml("table:table-cell")))
343 (XML_READER_TYPE_END_ELEMENT == r->node_type)
346 r->state = STATE_ROW;
349 case STATE_CELL_CONTENT:
350 assert (r->current_sheet >= 0);
351 assert (r->current_sheet < r->n_allocated_sheets);
353 if (r->sheets[r->current_sheet].start_row == -1)
354 r->sheets[r->current_sheet].start_row = r->row - 1;
357 (r->sheets[r->current_sheet].start_col == -1)
359 (r->sheets[r->current_sheet].start_col >= r->col - 1)
361 r->sheets[r->current_sheet].start_col = r->col - 1;
363 r->sheets[r->current_sheet].stop_row = r->row - 1;
365 if ( r->sheets[r->current_sheet].stop_col < r->col - 1)
366 r->sheets[r->current_sheet].stop_col = r->col - 1;
368 if (XML_READER_TYPE_END_ELEMENT == r->node_type)
369 r->state = STATE_CELL;
380 A struct containing the parameters of a cell's value
393 struct xml_value firstval;
397 /* Determine the width that a xmv should probably have */
399 xmv_to_width (const struct xml_value *xmv, int fallback)
401 int width = SPREADSHEET_DEFAULT_WIDTH;
403 /* Non-strings always have zero width */
404 if (xmv->type != NULL && 0 != xmlStrcmp (xmv->type, _xml("string")))
411 width = ROUND_UP (xmlStrlen (xmv->value),
412 SPREADSHEET_DEFAULT_WIDTH);
414 width = ROUND_UP (xmlStrlen (xmv->text),
415 SPREADSHEET_DEFAULT_WIDTH);
421 Sets the VAR of case C, to the value corresponding to the xml data
424 convert_xml_to_value (struct ccase *c, const struct variable *var,
425 const struct xml_value *xmv)
427 union value *v = case_data_rw (c, var);
429 if (xmv->value == NULL && xmv->text == NULL)
430 value_set_missing (v, var_get_width (var));
431 else if ( var_is_alpha (var))
432 /* Use the text field, because it seems that there is no
433 value field for strings */
434 value_copy_str_rpad (v, var_get_width (var), xmv->text, ' ');
437 const struct fmt_spec *fmt = var_get_write_format (var);
438 enum fmt_category fc = fmt_get_category (fmt->type);
440 assert ( fc != FMT_CAT_STRING);
442 if ( 0 == xmlStrcmp (xmv->type, _xml("float")))
444 v->f = c_strtod (CHAR_CAST (const char *, xmv->value), NULL);
448 const char *text = xmv->value ?
449 CHAR_CAST (const char *, xmv->value) : CHAR_CAST (const char *, xmv->text);
452 free (data_in (ss_cstr (text), "UTF-8",
462 /* Try to find out how many sheets there are in the "workbook" */
464 get_sheet_count (struct zip_reader *zreader)
466 xmlTextReaderPtr mxtr;
467 struct zip_member *meta = NULL;
468 meta = zip_member_open (zreader, "meta.xml");
473 mxtr = xmlReaderForIO ((xmlInputReadCallback) zip_member_read,
474 (xmlInputCloseCallback) zip_member_finish,
475 meta, NULL, NULL, 0);
477 while (1 == xmlTextReaderRead (mxtr))
479 xmlChar *name = xmlTextReaderName (mxtr);
480 if ( 0 == xmlStrcmp (name, _xml("meta:document-statistic")))
482 xmlChar *attr = xmlTextReaderGetAttribute (mxtr, _xml ("meta:table-count"));
486 int s = _xmlchar_to_int (attr);
487 xmlFreeTextReader (mxtr);
497 xmlFreeTextReader (mxtr);
502 ods_error_handler (void *ctx, const char *mesg,
503 UNUSED xmlParserSeverities sev, xmlTextReaderLocatorPtr loc)
505 struct ods_reader *r = ctx;
507 msg (MW, _("There was a problem whilst reading the %s file `%s' (near line %d): `%s'"),
509 r->spreadsheet.file_name,
510 xmlTextReaderLocatorLineNumber (loc),
516 init_reader (struct ods_reader *r, bool report_errors)
518 struct zip_member *content = zip_member_open (r->zreader, "content.xml");
519 xmlTextReaderPtr xtr;
521 if ( content == NULL)
524 zip_member_ref (content);
527 xmlFreeTextReader (r->xtr);
529 xtr = xmlReaderForIO ((xmlInputReadCallback) zip_member_read,
530 (xmlInputCloseCallback) zip_member_finish,
532 report_errors ? 0 : (XML_PARSE_NOERROR | XML_PARSE_NOWARNING) );
538 r->spreadsheet.type = SPREADSHEET_ODS;
541 r->current_sheet = 0;
542 r->state = STATE_INIT;
545 xmlTextReaderSetErrorHandler (xtr, ods_error_handler, r);
552 ods_probe (const char *filename, bool report_errors)
554 struct ods_reader *r;
555 struct string errs = DS_EMPTY_INITIALIZER;
557 struct zip_reader *zr = zip_reader_create (filename, &errs);
563 msg (ME, _("Cannot open %s as a OpenDocument file: %s"),
564 filename, ds_cstr (&errs));
569 sheet_count = get_sheet_count (zr);
571 r = xzalloc (sizeof *r);
574 if (! init_reader (r, report_errors))
579 r->spreadsheet.n_sheets = sheet_count;
580 r->n_allocated_sheets = 0;
585 r->spreadsheet.file_name = filename;
586 return &r->spreadsheet;
589 zip_reader_destroy (r->zreader);
596 ods_make_reader (struct spreadsheet *spreadsheet,
597 const struct spreadsheet_read_options *opts)
600 xmlChar *type = NULL;
601 unsigned long int vstart = 0;
602 casenumber n_cases = CASENUMBER_MAX;
604 struct var_spec *var_spec = NULL;
607 struct ods_reader *r = (struct ods_reader *) spreadsheet;
608 xmlChar *val_string = NULL;
611 r->read_names = opts->read_names;
612 ds_init_empty (&r->ods_errs);
615 if ( !init_reader (r, true))
618 if ( opts->cell_range )
620 if ( ! convert_cell_ref (opts->cell_range,
621 &r->start_col, &r->start_row,
622 &r->stop_col, &r->stop_row))
624 msg (SE, _("Invalid cell range `%s'"),
637 r->state = STATE_INIT;
638 r->target_sheet_name = BAD_CAST opts->sheet_name;
639 r->target_sheet_index = opts->sheet_index;
644 printf ("%s:%d %d,%d %d,%d\n", __FILE__, __LINE__,
652 /* Advance to the start of the cells for the target sheet */
653 while ( ! reading_target_sheet (r)
654 || r->state != STATE_ROW || r->row <= r->start_row )
656 if (1 != (ret = xmlTextReaderRead (r->xtr)))
664 msg (MW, _("Selected sheet or range of spreadsheet `%s' is empty."),
665 spreadsheet->file_name);
669 if ( opts->read_names)
671 while (1 == (ret = xmlTextReaderRead (r->xtr)))
677 /* If the row is finished then stop for now */
678 if (r->state == STATE_TABLE && r->row > r->start_row)
681 idx = r->col - r->start_col -1 ;
686 if (r->stop_col != -1 && idx > r->stop_col - r->start_col)
689 if (r->state == STATE_CELL_CONTENT
691 XML_READER_TYPE_TEXT == r->node_type)
693 xmlChar *value = xmlTextReaderValue (r->xtr);
695 if ( idx >= n_var_specs)
697 var_spec = xrealloc (var_spec, sizeof (*var_spec) * (idx + 1));
699 /* xrealloc (unlike realloc) doesn't initialise its memory to 0 */
700 memset (var_spec + n_var_specs,
702 (idx - n_var_specs + 1) * sizeof (*var_spec));
703 n_var_specs = idx + 1;
705 var_spec[idx].firstval.text = 0;
706 var_spec[idx].firstval.value = 0;
707 var_spec[idx].firstval.type = 0;
709 var_spec [idx].name = strdup (CHAR_CAST (const char *, value));
716 /* Read in the first row of data */
717 while (1 == xmlTextReaderRead (r->xtr))
722 if ( ! reading_target_sheet (r) )
725 /* If the row is finished then stop for now */
726 if (r->state == STATE_TABLE &&
727 r->row > r->start_row + (opts->read_names ? 1 : 0))
730 idx = r->col - r->start_col - 1;
734 if (r->stop_col != -1 && idx > r->stop_col - r->start_col)
737 if ( r->state == STATE_CELL &&
738 XML_READER_TYPE_ELEMENT == r->node_type)
740 type = xmlTextReaderGetAttribute (r->xtr, _xml ("office:value-type"));
741 val_string = xmlTextReaderGetAttribute (r->xtr, _xml ("office:value"));
744 if ( r->state == STATE_CELL_CONTENT &&
745 XML_READER_TYPE_TEXT == r->node_type)
748 printf ("%s:%d Idx %d n_var_specs %d\n", __FILE__, __LINE__,
751 printf ("%s:%d Idx %d r_col %d\n", __FILE__, __LINE__,
755 if (idx >= n_var_specs)
757 var_spec = xrealloc (var_spec, sizeof (*var_spec) * (idx + 1));
758 memset (var_spec + n_var_specs,
760 (idx - n_var_specs + 1) * sizeof (*var_spec));
762 var_spec [idx].name = NULL;
763 n_var_specs = idx + 1;
766 var_spec [idx].firstval.type = type;
767 var_spec [idx].firstval.text = xmlTextReaderValue (r->xtr);
768 var_spec [idx].firstval.value = val_string;
776 /* Create the dictionary and populate it */
777 r->spreadsheet.dict = r->dict = dict_create (
778 CHAR_CAST (const char *, xmlTextReaderConstEncoding (r->xtr)));
780 for (i = 0; i < n_var_specs ; ++i )
783 struct variable *var = NULL;
784 char *name = dict_make_unique_var_name (r->dict, var_spec[i].name, &vstart);
785 int width = xmv_to_width (&var_spec[i].firstval, opts->asw);
786 dict_create_var (r->dict, name, width);
789 var = dict_get_var (r->dict, i);
791 if ( 0 == xmlStrcmp (var_spec[i].firstval.type, _xml("date")))
798 fmt = fmt_default_for_width (width);
800 var_set_both_formats (var, &fmt);
803 /* Create the first case, and cache it */
804 r->used_first_case = false;
806 if ( n_var_specs == 0 )
808 msg (MW, _("Selected sheet or range of spreadsheet `%s' is empty."),
809 spreadsheet->file_name);
813 r->proto = caseproto_ref (dict_get_proto (r->dict));
814 r->first_case = case_create (r->proto);
815 case_set_missing (r->first_case);
817 for (i = 0 ; i < n_var_specs; ++i)
819 const struct variable *var = dict_get_var (r->dict, i);
821 convert_xml_to_value (r->first_case, var, &var_spec[i].firstval);
824 /* Read in the first row of data */
825 while (1 == xmlTextReaderRead (r->xtr))
829 if (r->state == STATE_ROW)
833 // zip_reader_destroy (zreader);
835 for ( i = 0 ; i < n_var_specs ; ++i )
837 free (var_spec[i].firstval.type);
838 free (var_spec[i].firstval.value);
839 free (var_spec[i].firstval.text);
840 free (var_spec[i].name);
846 return casereader_create_sequential
850 &ods_file_casereader_class, r);
854 //zip_reader_destroy (zreader);
856 for ( i = 0 ; i < n_var_specs ; ++i )
858 free (var_spec[i].firstval.type);
859 free (var_spec[i].firstval.value);
860 free (var_spec[i].firstval.text);
861 free (var_spec[i].name);
866 dict_destroy (r->spreadsheet.dict);
867 r->spreadsheet.dict = NULL;
868 ods_file_casereader_destroy (NULL, r);
875 /* Reads and returns one case from READER's file. Returns a null
876 pointer on failure. */
877 static struct ccase *
878 ods_file_casereader_read (struct casereader *reader UNUSED, void *r_)
880 struct ccase *c = NULL;
881 xmlChar *val_string = NULL;
882 xmlChar *type = NULL;
883 struct ods_reader *r = r_;
885 if (!r->used_first_case)
887 r->used_first_case = true;
888 return r->first_case;
892 /* Advance to the start of a row. (If there is one) */
893 while (r->state != STATE_ROW
894 && 1 == xmlTextReaderRead (r->xtr)
901 if ( ! reading_target_sheet (r)
902 || r->state < STATE_TABLE
903 || (r->stop_row != -1 && r->row > r->stop_row + 1)
909 c = case_create (r->proto);
910 case_set_missing (c);
912 while (1 == xmlTextReaderRead (r->xtr))
916 if ( r->stop_row != -1 && r->row > r->stop_row + 1)
919 if (r->state == STATE_CELL &&
920 r->node_type == XML_READER_TYPE_ELEMENT)
922 type = xmlTextReaderGetAttribute (r->xtr, _xml ("office:value-type"));
923 val_string = xmlTextReaderGetAttribute (r->xtr, _xml ("office:value"));
926 if (r->state == STATE_CELL_CONTENT &&
927 r->node_type == XML_READER_TYPE_TEXT)
930 struct xml_value *xmv = xzalloc (sizeof *xmv);
931 xmv->text = xmlTextReaderValue (r->xtr);
932 xmv->value = val_string;
936 for (col = 0; col < r->col_span; ++col)
938 const struct variable *var;
939 const int idx = r->col - col - r->start_col - 1;
942 if (r->stop_col != -1 && idx > r->stop_col - r->start_col )
945 var = dict_get_var (r->dict, idx);
946 convert_xml_to_value (c, var, xmv);
950 xmlFree (xmv->value);
954 if ( r->state <= STATE_TABLE)