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"
29 #include "data/file-handle-def.h"
30 #include "data/settings.h"
31 #include "libpspp/array.h"
32 #include "libpspp/assertion.h"
33 #include "libpspp/i18n.h"
34 #include "libpspp/message.h"
35 #include "libpspp/llx.h"
36 #include "libpspp/string-map.h"
37 #include "libpspp/string-set.h"
38 #include "libpspp/str.h"
39 #include "output/output-item.h"
42 #include "gl/xalloc.h"
43 #include "gl/xmemdup0.h"
46 #define _(msgid) gettext (msgid)
50 struct ll ll; /* Node for this engine. */
51 struct llx_list drivers; /* Contains "struct output_driver"s. */
52 struct output_item *deferred_text; /* Output text being accumulated. */
53 char *command_name; /* Name of command being processed. */
54 char *title, *subtitle; /* Components of page title. */
56 /* Output grouping stack.
58 TEXT_ITEM_GROUP_OPEN pushes a group on the stack and
59 TEXT_ITEM_GROUP_CLOSE pops one off. */
60 char **groups; /* Command names of nested sections. */
62 size_t allocated_groups;
64 struct string_map heading_vars;
67 static struct ll_list engine_stack = LL_INITIALIZER (engine_stack);
69 static const struct output_driver_factory *factories[];
71 static struct output_engine *
72 engine_stack_top (void)
74 struct ll *head = ll_head (&engine_stack);
75 if (ll_is_empty (&engine_stack))
77 return ll_data (head, struct output_engine, ll);
81 put_strftime (const char *key, const char *format,
82 const struct tm *tm, struct string_map *vars)
84 if (!string_map_find (vars, key))
87 strftime (value, sizeof value, format, tm);
88 string_map_insert (vars, key, value);
93 output_engine_push (void)
95 struct output_engine *e = xzalloc (sizeof (*e));
97 llx_init (&e->drivers);
99 string_map_init (&e->heading_vars);
101 time_t t = time (NULL);
102 const struct tm *tm = localtime (&t);
103 put_strftime ("Date", "%x", tm, &e->heading_vars);
104 put_strftime ("Time", "%X", tm, &e->heading_vars);
106 ll_push_head (&engine_stack, &e->ll);
110 output_engine_pop (void)
112 struct ll *head = ll_pop_head (&engine_stack);
113 struct output_engine *e =ll_data (head, struct output_engine, ll);
115 while (!llx_is_empty (&e->drivers))
117 struct output_driver *d = llx_pop_head (&e->drivers, &llx_malloc_mgr);
118 output_driver_destroy (d);
120 output_item_unref (e->deferred_text);
121 free (e->command_name);
124 for (size_t i = 0; i < e->n_groups; i++)
127 string_map_destroy (&e->heading_vars);
132 output_get_supported_formats (struct string_set *formats)
134 const struct output_driver_factory **fp;
136 for (fp = factories; *fp != NULL; fp++)
137 string_set_insert (formats, (*fp)->extension);
141 output_submit__ (struct output_engine *e, struct output_item *item)
143 struct llx *llx, *next;
145 for (llx = llx_head (&e->drivers); llx != llx_null (&e->drivers); llx = next)
147 struct output_driver *d = llx_data (llx);
149 next = llx_next (llx);
151 enum settings_output_type type = SETTINGS_OUTPUT_RESULT;
154 case OUTPUT_ITEM_MESSAGE:
155 type = (item->message->severity == MSG_S_NOTE
156 ? SETTINGS_OUTPUT_NOTE
157 : SETTINGS_OUTPUT_ERROR);
160 case OUTPUT_ITEM_TEXT:
161 if (item->text.subtype == TEXT_ITEM_SYNTAX)
162 type = SETTINGS_OUTPUT_SYNTAX;
165 case OUTPUT_ITEM_CHART:
166 case OUTPUT_ITEM_GROUP_OPEN:
167 case OUTPUT_ITEM_GROUP_CLOSE:
168 case OUTPUT_ITEM_IMAGE:
169 case OUTPUT_ITEM_PAGE_BREAK:
170 case OUTPUT_ITEM_PAGE_SETUP:
171 case OUTPUT_ITEM_TABLE:
175 if (settings_get_output_routing (type) & d->device_type)
176 d->class->submit (d, item);
179 output_item_unref (item);
183 flush_deferred_text (struct output_engine *e)
185 struct output_item *deferred_text = e->deferred_text;
188 e->deferred_text = NULL;
189 output_submit__ (e, deferred_text);
194 defer_text (struct output_engine *e, struct output_item *item)
196 if (item->type != OUTPUT_ITEM_TEXT)
199 if (!e->deferred_text)
200 e->deferred_text = output_item_unshare (item);
201 else if (text_item_append (e->deferred_text, item))
202 output_item_unref (item);
205 flush_deferred_text (e);
206 e->deferred_text = output_item_unshare (item);
211 /* Submits ITEM to the configured output drivers, and transfers ownership to
212 the output subsystem. */
214 output_submit (struct output_item *item)
216 struct output_engine *e = engine_stack_top ();
224 if (defer_text (e, item))
226 flush_deferred_text (e);
230 case OUTPUT_ITEM_GROUP_OPEN:
231 if (e->n_groups >= e->allocated_groups)
232 e->groups = x2nrealloc (e->groups, &e->allocated_groups,
234 e->groups[e->n_groups] = xstrdup_if_nonnull (item->command_name);
238 case OUTPUT_ITEM_GROUP_CLOSE:
239 assert (e->n_groups > 0);
241 size_t idx = --e->n_groups;
242 free (e->groups[idx]);
244 char *key = xasprintf ("Head%zu", idx);
245 free (string_map_find_and_delete (&e->heading_vars, key));
249 case OUTPUT_ITEM_TEXT:
251 enum text_item_subtype st = item->text.subtype;
252 char *key = (st == TEXT_ITEM_TITLE ? xasprintf ("Head%zu", e->n_groups)
253 : st == TEXT_ITEM_PAGE_TITLE ? xstrdup ("PageTitle")
256 string_map_replace_nocopy (&e->heading_vars, key,
257 text_item_get_plain_text (item));
261 case OUTPUT_ITEM_CHART:
262 case OUTPUT_ITEM_IMAGE:
263 case OUTPUT_ITEM_MESSAGE:
264 case OUTPUT_ITEM_PAGE_BREAK:
265 case OUTPUT_ITEM_PAGE_SETUP:
266 case OUTPUT_ITEM_TABLE:
270 output_submit__ (e, item);
273 /* Returns the name of the command currently being parsed, or NULL if no
274 command is being parsed. */
276 output_get_command_name (void)
278 struct output_engine *e = engine_stack_top ();
282 for (size_t i = e->n_groups; i-- > 0;)
290 output_get_uppercase_command_name (void)
292 const char *command_name = output_get_command_name ();
293 return command_name ? utf8_to_upper (command_name) : NULL;
296 /* Flushes output to screen devices, so that the user can see
297 output that doesn't fill up an entire page. */
301 struct output_engine *e = engine_stack_top ();
304 flush_deferred_text (e);
305 for (llx = llx_head (&e->drivers); llx != llx_null (&e->drivers);
306 llx = llx_next (llx))
308 struct output_driver *d = llx_data (llx);
309 if (d->device_type & SETTINGS_DEVICE_TERMINAL && d->class->flush != NULL)
315 output_set_title__ (struct output_engine *e, char **dst, const char *src)
318 *dst = xstrdup_if_nonnull (src);
321 = (e->title && e->subtitle ? xasprintf ("%s\n%s", e->title, e->subtitle)
322 : e->title ? xstrdup (e->title)
323 : e->subtitle ? xstrdup (e->subtitle)
325 output_item_submit (text_item_create_nocopy (TEXT_ITEM_PAGE_TITLE,
330 output_set_title (const char *title)
332 struct output_engine *e = engine_stack_top ();
334 output_set_title__ (e, &e->title, title);
338 output_set_subtitle (const char *subtitle)
340 struct output_engine *e = engine_stack_top ();
342 output_set_title__ (e, &e->subtitle, subtitle);
346 output_set_filename (const char *filename)
348 struct output_engine *e = engine_stack_top ();
350 string_map_replace (&e->heading_vars, "Filename", filename);
354 output_get_group_level (void)
356 struct output_engine *e = engine_stack_top ();
362 output_driver_init (struct output_driver *driver,
363 const struct output_driver_class *class,
364 const char *name, enum settings_output_devices type)
366 driver->class = class;
367 driver->name = xstrdup (name);
368 driver->device_type = type;
372 output_driver_destroy (struct output_driver *driver)
376 char *name = driver->name;
377 if (output_driver_is_registered (driver))
378 output_driver_unregister (driver);
379 if (driver->class->destroy)
380 driver->class->destroy (driver);
386 output_driver_get_name (const struct output_driver *driver)
391 static struct output_engine *
392 output_driver_get_engine (const struct output_driver *driver)
394 struct output_engine *e;
396 ll_for_each (e, struct output_engine, ll, &engine_stack)
398 if (llx_find (llx_head (&e->drivers), llx_null (&e->drivers), driver))
406 output_driver_register (struct output_driver *driver)
408 struct output_engine *e = engine_stack_top ();
410 assert (!output_driver_is_registered (driver));
411 llx_push_tail (&e->drivers, driver, &llx_malloc_mgr);
415 output_driver_unregister (struct output_driver *driver)
417 struct output_engine *e = output_driver_get_engine (driver);
420 llx_remove (llx_find (llx_head (&e->drivers), llx_null (&e->drivers), driver),
425 output_driver_is_registered (const struct output_driver *driver)
427 return output_driver_get_engine (driver) != NULL;
430 extern const struct output_driver_factory csv_driver_factory;
431 extern const struct output_driver_factory html_driver_factory;
432 extern const struct output_driver_factory list_driver_factory;
433 extern const struct output_driver_factory odt_driver_factory;
434 extern const struct output_driver_factory pdf_driver_factory;
435 extern const struct output_driver_factory png_driver_factory;
436 extern const struct output_driver_factory ps_driver_factory;
437 extern const struct output_driver_factory spv_driver_factory;
438 extern const struct output_driver_factory svg_driver_factory;
439 extern const struct output_driver_factory tex_driver_factory;
440 extern const struct output_driver_factory txt_driver_factory;
442 static const struct output_driver_factory *factories[] =
445 &list_driver_factory,
446 &html_driver_factory,
458 static const struct output_driver_factory *
459 find_factory (const char *format)
461 const struct output_driver_factory **fp;
463 for (fp = factories; *fp != NULL; fp++)
465 const struct output_driver_factory *f = *fp;
467 if (!strcmp (f->extension, format))
470 return &txt_driver_factory;
473 static enum settings_output_devices
474 default_device_type (const char *file_name)
476 return (!strcmp (file_name, "-")
477 ? SETTINGS_DEVICE_TERMINAL
478 : SETTINGS_DEVICE_LISTING);
481 struct output_driver *
482 output_driver_create (struct string_map *options)
484 enum settings_output_devices device_type;
485 const struct output_driver_factory *f;
486 struct output_driver *driver;
491 format = string_map_find_and_delete (options, "format");
492 file_name = string_map_find_and_delete (options, "output-file");
496 if (file_name != NULL)
498 const char *extension = strrchr (file_name, '.');
499 format = xstrdup (extension != NULL ? extension + 1 : "");
502 format = xstrdup ("txt");
504 f = find_factory (format);
506 if (file_name == NULL)
507 file_name = xstrdup (f->default_file_name);
509 /* XXX should use parse_enum(). */
510 device_string = string_map_find_and_delete (options, "device");
511 if (device_string == NULL || device_string[0] == '\0')
512 device_type = default_device_type (file_name);
513 else if (!strcmp (device_string, "terminal"))
514 device_type = SETTINGS_DEVICE_TERMINAL;
515 else if (!strcmp (device_string, "listing"))
516 device_type = SETTINGS_DEVICE_LISTING;
519 msg (MW, _("%s is not a valid device type (the choices are `%s' and `%s')"),
520 device_string, "terminal", "listing");
521 device_type = default_device_type (file_name);
524 struct file_handle *fh = fh_create_file (NULL, file_name, NULL, fh_default_properties ());
526 driver = f->create (fh, device_type, options);
529 const struct string_map_node *node;
532 STRING_MAP_FOR_EACH_KEY (key, node, options)
533 msg (MW, _("%s: unknown option `%s'"), file_name, key);
535 string_map_clear (options);
539 free (device_string);
545 output_driver_parse_option (const char *option, struct string_map *options)
547 const char *equals = strchr (option, '=');
550 error (0, 0, _("%s: output option missing `='"), option);
554 char *key = xmemdup0 (option, equals - option);
555 if (string_map_contains (options, key))
557 error (0, 0, _("%s: output option specified more than once"), key);
562 char *value = xmemdup0 (equals + 1, strlen (equals + 1));
563 string_map_insert_nocopy (options, key, value);
567 output_driver_substitute_heading_vars (const char *src, int page_number)
569 struct output_engine *e = engine_stack_top ();
570 struct string dst = DS_EMPTY_INITIALIZER;
571 ds_extend (&dst, strlen (src));
572 for (const char *p = src; *p;)
574 if (!strncmp (p, "&[", 6))
576 if (page_number != INT_MIN)
578 const char *start = p + 6;
579 const char *end = strchr (start, ']');
582 const char *value = string_map_find__ (&e->heading_vars,
585 ds_put_cstr (&dst, value);
586 else if (ss_equals (ss_buffer (start, end - start),
588 ds_put_format (&dst, "%d", page_number);
593 ds_put_cstr (&dst, "&");
597 ds_put_byte (&dst, *p++);
599 return ds_steal_cstr (&dst);