1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000, 2007, 2009, 2010, 2011, 2012, 2014, 2019 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/driver.h"
20 #include "output/driver-provider.h"
24 #include <libxml/parser.h>
25 #include <libxml/tree.h>
31 #include "data/file-handle-def.h"
32 #include "data/settings.h"
33 #include "libpspp/array.h"
34 #include "libpspp/assertion.h"
35 #include "libpspp/message.h"
36 #include "libpspp/llx.h"
37 #include "libpspp/string-map.h"
38 #include "libpspp/string-set.h"
39 #include "libpspp/str.h"
40 #include "output/group-item.h"
41 #include "output/message-item.h"
42 #include "output/output-item.h"
43 #include "output/text-item.h"
46 #include "gl/xalloc.h"
47 #include "gl/xmemdup0.h"
50 #define _(msgid) gettext (msgid)
54 struct ll ll; /* Node for this engine. */
55 struct llx_list drivers; /* Contains "struct output_driver"s. */
56 struct string deferred_text; /* Output text being accumulated. */
57 enum text_item_type deferred_type; /* Type of text being accumulated. */
58 char *command_name; /* Name of command being processed. */
59 char *title, *subtitle; /* Components of page title. */
61 /* Output grouping stack.
63 TEXT_ITEM_GROUP_OPEN pushes a group on the stack and
64 TEXT_ITEM_GROUP_CLOSE pops one off. */
65 char **groups; /* Command names of nested sections. */
67 size_t allocated_groups;
69 struct string_map heading_vars;
72 static struct ll_list engine_stack = LL_INITIALIZER (engine_stack);
74 static const struct output_driver_factory *factories[];
76 static struct output_engine *
77 engine_stack_top (void)
79 struct ll *head = ll_head (&engine_stack);
80 if (ll_is_empty (&engine_stack))
82 return ll_data (head, struct output_engine, ll);
86 put_strftime (const char *key, const char *format,
87 const struct tm *tm, struct string_map *vars)
89 if (!string_map_find (vars, key))
92 strftime (value, sizeof value, format, tm);
93 string_map_insert (vars, key, value);
98 output_engine_push (void)
100 struct output_engine *e = xzalloc (sizeof (*e));
102 llx_init (&e->drivers);
103 ds_init_empty (&e->deferred_text);
105 string_map_init (&e->heading_vars);
107 time_t t = time (NULL);
108 const struct tm *tm = localtime (&t);
109 put_strftime ("Date", "%x", tm, &e->heading_vars);
110 put_strftime ("Time", "%X", tm, &e->heading_vars);
112 ll_push_head (&engine_stack, &e->ll);
116 output_engine_pop (void)
118 struct ll *head = ll_pop_head (&engine_stack);
119 struct output_engine *e =ll_data (head, struct output_engine, ll);
121 while (!llx_is_empty (&e->drivers))
123 struct output_driver *d = llx_pop_head (&e->drivers, &llx_malloc_mgr);
124 output_driver_destroy (d);
126 ds_destroy (&e->deferred_text);
127 free (e->command_name);
130 for (size_t i = 0; i < e->n_groups; i++)
133 string_map_destroy (&e->heading_vars);
138 output_get_supported_formats (struct string_set *formats)
140 const struct output_driver_factory **fp;
142 for (fp = factories; *fp != NULL; fp++)
143 string_set_insert (formats, (*fp)->extension);
147 output_submit__ (struct output_engine *e, struct output_item *item)
149 struct llx *llx, *next;
151 for (llx = llx_head (&e->drivers); llx != llx_null (&e->drivers); llx = next)
153 struct output_driver *d = llx_data (llx);
154 enum settings_output_type type;
156 next = llx_next (llx);
158 if (is_message_item (item))
160 const struct msg *m = message_item_get_msg (to_message_item (item));
161 if (m->severity == MSG_S_NOTE)
162 type = SETTINGS_OUTPUT_NOTE;
164 type = SETTINGS_OUTPUT_ERROR;
166 else if (is_text_item (item)
167 && text_item_get_type (to_text_item (item)) == TEXT_ITEM_SYNTAX)
168 type = SETTINGS_OUTPUT_SYNTAX;
170 type = SETTINGS_OUTPUT_RESULT;
172 if (settings_get_output_routing (type) & d->device_type)
173 d->class->submit (d, item);
176 output_item_unref (item);
180 flush_deferred_text (struct output_engine *e)
182 if (!ds_is_empty (&e->deferred_text))
184 char *text = ds_steal_cstr (&e->deferred_text);
185 output_submit__ (e, text_item_super (text_item_create_nocopy (
186 e->deferred_type, text)));
191 defer_text (struct output_engine *e, struct output_item *item)
193 if (!is_text_item (item))
196 enum text_item_type type = text_item_get_type (to_text_item (item));
197 if (type != TEXT_ITEM_SYNTAX && type != TEXT_ITEM_LOG)
200 if (!ds_is_empty (&e->deferred_text) && e->deferred_type != type)
201 flush_deferred_text (e);
203 e->deferred_type = type;
205 if (!ds_is_empty (&e->deferred_text))
206 ds_put_byte (&e->deferred_text, '\n');
208 const char *text = text_item_get_text (to_text_item (item));
209 ds_put_cstr (&e->deferred_text, text);
210 output_item_unref (item);
215 /* Submits ITEM to the configured output drivers, and transfers ownership to
216 the output subsystem. */
218 output_submit (struct output_item *item)
220 struct output_engine *e = engine_stack_top ();
228 if (defer_text (e, item))
230 flush_deferred_text (e);
232 if (is_group_open_item (item))
234 const struct group_open_item *group_open_item
235 = to_group_open_item (item);
236 if (e->n_groups >= e->allocated_groups)
237 e->groups = x2nrealloc (e->groups, &e->allocated_groups,
239 e->groups[e->n_groups] = (group_open_item->command_name
240 ? xstrdup (group_open_item->command_name)
244 else if (is_group_close_item (item))
246 assert (e->n_groups > 0);
248 size_t idx = --e->n_groups;
249 free (e->groups[idx]);
250 if (idx >= 1 && idx <= 4)
252 char *key = xasprintf ("Head%zu", idx);
253 free (string_map_find_and_delete (&e->heading_vars, key));
257 else if (is_text_item (item))
259 const struct text_item *text_item = to_text_item (item);
260 enum text_item_type type = text_item_get_type (text_item);
261 const char *text = text_item_get_text (text_item);
262 if (type == TEXT_ITEM_TITLE
263 && e->n_groups >= 1 && e->n_groups <= 4)
265 char *key = xasprintf ("Head%zu", e->n_groups);
266 string_map_replace (&e->heading_vars, key, text);
269 else if (type == TEXT_ITEM_PAGE_TITLE)
270 string_map_replace (&e->heading_vars, "PageTitle", text);
273 output_submit__ (e, item);
277 output_get_command_name (void)
279 struct output_engine *e = engine_stack_top ();
283 for (size_t i = e->n_groups; i-- > 0; )
290 /* Flushes output to screen devices, so that the user can see
291 output that doesn't fill up an entire page. */
295 struct output_engine *e = engine_stack_top ();
298 flush_deferred_text (e);
299 for (llx = llx_head (&e->drivers); llx != llx_null (&e->drivers);
300 llx = llx_next (llx))
302 struct output_driver *d = llx_data (llx);
303 if (d->device_type & SETTINGS_DEVICE_TERMINAL && d->class->flush != NULL)
309 output_set_title__ (struct output_engine *e, char **dst, const char *src)
312 *dst = src ? xstrdup (src) : NULL;
315 = (e->title && e->subtitle ? xasprintf ("%s\n%s", e->title, e->subtitle)
316 : e->title ? xstrdup (e->title)
317 : e->subtitle ? xstrdup (e->subtitle)
319 text_item_submit (text_item_create_nocopy (TEXT_ITEM_PAGE_TITLE,
324 output_set_title (const char *title)
326 struct output_engine *e = engine_stack_top ();
328 output_set_title__ (e, &e->title, title);
332 output_set_subtitle (const char *subtitle)
334 struct output_engine *e = engine_stack_top ();
336 output_set_title__ (e, &e->subtitle, subtitle);
340 output_set_filename (const char *filename)
342 struct output_engine *e = engine_stack_top ();
344 string_map_replace (&e->heading_vars, "Filename", filename);
348 output_get_group_level (void)
350 struct output_engine *e = engine_stack_top ();
356 output_driver_init (struct output_driver *driver,
357 const struct output_driver_class *class,
358 const char *name, enum settings_output_devices type)
360 driver->class = class;
361 driver->name = xstrdup (name);
362 driver->device_type = type;
366 output_driver_destroy (struct output_driver *driver)
370 char *name = driver->name;
371 if (output_driver_is_registered (driver))
372 output_driver_unregister (driver);
373 if (driver->class->destroy)
374 driver->class->destroy (driver);
380 output_driver_get_name (const struct output_driver *driver)
385 static struct output_engine *
386 output_driver_get_engine (const struct output_driver *driver)
388 struct output_engine *e;
390 ll_for_each (e, struct output_engine, ll, &engine_stack)
392 if (llx_find (llx_head (&e->drivers), llx_null (&e->drivers), driver))
400 output_driver_register (struct output_driver *driver)
402 struct output_engine *e = engine_stack_top ();
404 assert (!output_driver_is_registered (driver));
405 llx_push_tail (&e->drivers, driver, &llx_malloc_mgr);
409 output_driver_unregister (struct output_driver *driver)
411 struct output_engine *e = output_driver_get_engine (driver);
414 llx_remove (llx_find (llx_head (&e->drivers), llx_null (&e->drivers), driver),
419 output_driver_is_registered (const struct output_driver *driver)
421 return output_driver_get_engine (driver) != NULL;
424 extern const struct output_driver_factory txt_driver_factory;
425 extern const struct output_driver_factory list_driver_factory;
426 extern const struct output_driver_factory html_driver_factory;
427 extern const struct output_driver_factory csv_driver_factory;
428 extern const struct output_driver_factory odt_driver_factory;
430 extern const struct output_driver_factory pdf_driver_factory;
431 extern const struct output_driver_factory ps_driver_factory;
432 extern const struct output_driver_factory svg_driver_factory;
435 static const struct output_driver_factory *factories[] =
438 &list_driver_factory,
439 &html_driver_factory,
450 static const struct output_driver_factory *
451 find_factory (const char *format)
453 const struct output_driver_factory **fp;
455 for (fp = factories; *fp != NULL; fp++)
457 const struct output_driver_factory *f = *fp;
459 if (!strcmp (f->extension, format))
462 return &txt_driver_factory;
465 static enum settings_output_devices
466 default_device_type (const char *file_name)
468 return (!strcmp (file_name, "-")
469 ? SETTINGS_DEVICE_TERMINAL
470 : SETTINGS_DEVICE_LISTING);
473 struct output_driver *
474 output_driver_create (struct string_map *options)
476 enum settings_output_devices device_type;
477 const struct output_driver_factory *f;
478 struct output_driver *driver;
483 format = string_map_find_and_delete (options, "format");
484 file_name = string_map_find_and_delete (options, "output-file");
488 if (file_name != NULL)
490 const char *extension = strrchr (file_name, '.');
491 format = xstrdup (extension != NULL ? extension + 1 : "");
494 format = xstrdup ("txt");
496 f = find_factory (format);
498 if (file_name == NULL)
499 file_name = xstrdup (f->default_file_name);
501 /* XXX should use parse_enum(). */
502 device_string = string_map_find_and_delete (options, "device");
503 if (device_string == NULL || device_string[0] == '\0')
504 device_type = default_device_type (file_name);
505 else if (!strcmp (device_string, "terminal"))
506 device_type = SETTINGS_DEVICE_TERMINAL;
507 else if (!strcmp (device_string, "listing"))
508 device_type = SETTINGS_DEVICE_LISTING;
511 msg (MW, _("%s is not a valid device type (the choices are `%s' and `%s')"),
512 device_string, "terminal", "listing");
513 device_type = default_device_type (file_name);
516 struct file_handle *fh = fh_create_file (NULL, file_name, NULL, fh_default_properties ());
518 driver = f->create (fh, device_type, options);
521 const struct string_map_node *node;
524 STRING_MAP_FOR_EACH_KEY (key, node, options)
525 msg (MW, _("%s: unknown option `%s'"), file_name, key);
527 string_map_clear (options);
531 free (device_string);
537 output_driver_parse_option (const char *option, struct string_map *options)
539 const char *equals = strchr (option, '=');
542 error (0, 0, _("%s: output option missing `='"), option);
546 char *key = xmemdup0 (option, equals - option);
547 if (string_map_contains (options, key))
549 error (0, 0, _("%s: output option specified more than once"), key);
554 char *value = xmemdup0 (equals + 1, strlen (equals + 1));
555 string_map_insert_nocopy (options, key, value);
558 /* Extracts the actual text content from the given Pango MARKUP and returns it
559 as as a malloc()'d string. */
561 output_get_text_from_markup (const char *markup)
563 xmlParserCtxt *parser = xmlCreatePushParserCtxt (NULL, NULL, NULL, 0, NULL);
565 return xstrdup (markup);
567 xmlParseChunk (parser, "<xml>", strlen ("<xml>"), false);
568 xmlParseChunk (parser, markup, strlen (markup), false);
569 xmlParseChunk (parser, "</xml>", strlen ("</xml>"), true);
572 = (parser->wellFormed
574 xmlNodeGetContent (xmlDocGetRootElement (parser->myDoc)))
576 xmlFreeDoc (parser->myDoc);
577 xmlFreeParserCtxt (parser);
583 output_driver_substitute_heading_vars (const char *src, int page_number)
585 struct output_engine *e = engine_stack_top ();
586 struct string dst = DS_EMPTY_INITIALIZER;
587 ds_extend (&dst, strlen (src));
588 for (const char *p = src; *p; )
590 if (!strncmp (p, "&[", 6))
592 if (page_number != INT_MIN)
594 const char *start = p + 6;
595 const char *end = strchr (start, ']');
598 const char *value = string_map_find__ (&e->heading_vars,
601 ds_put_cstr (&dst, value);
602 else if (ss_equals (ss_buffer (start, end - start),
604 ds_put_format (&dst, "%d", page_number);
609 ds_put_cstr (&dst, "&");
613 ds_put_byte (&dst, *p++);
615 return ds_steal_cstr (&dst);