1 /* Routines for handling XML generic OS data provided by target.
3 Copyright (C) 2008 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "xml-support.h"
25 #include "gdb_string.h"
29 #if !defined(HAVE_LIBEXPAT)
32 osdata_parse (const char *xml)
34 static int have_warned;
39 warning (_("Can not parse XML OS data; XML support was disabled "
46 #else /* HAVE_LIBEXPAT */
48 #include "xml-support.h"
50 /* Internal parsing data passed to all XML callbacks. */
51 struct osdata_parsing_data
53 struct osdata *osdata;
57 /* Handle the start of a <osdata> element. */
60 osdata_start_osdata (struct gdb_xml_parser *parser,
61 const struct gdb_xml_element *element,
62 void *user_data, VEC(gdb_xml_value_s) *attributes)
64 struct osdata_parsing_data *data = user_data;
66 struct osdata *osdata;
69 gdb_xml_error (parser, _("Seen more than on osdata element"));
71 type = VEC_index (gdb_xml_value_s, attributes, 0)->value;
72 osdata = XZALLOC (struct osdata);
73 osdata->type = xstrdup (type);
74 data->osdata = osdata;
77 /* Handle the start of a <item> element. */
80 osdata_start_item (struct gdb_xml_parser *parser,
81 const struct gdb_xml_element *element,
82 void *user_data, VEC(gdb_xml_value_s) *attributes)
84 struct osdata_parsing_data *data = user_data;
85 struct osdata_item item = { NULL };
86 VEC_safe_push (osdata_item_s, data->osdata->items, &item);
89 /* Handle the start of a <column> element. */
92 osdata_start_column (struct gdb_xml_parser *parser,
93 const struct gdb_xml_element *element,
94 void *user_data, VEC(gdb_xml_value_s) *attributes)
96 struct osdata_parsing_data *data = user_data;
97 const char *name = VEC_index (gdb_xml_value_s, attributes, 0)->value;
98 data->property_name = xstrdup (name);
101 /* Handle the end of a <column> element. */
104 osdata_end_column (struct gdb_xml_parser *parser,
105 const struct gdb_xml_element *element,
106 void *user_data, const char *body_text)
108 struct osdata_parsing_data *data = user_data;
109 struct osdata *osdata = data->osdata;
110 struct osdata_item *item = VEC_last (osdata_item_s, osdata->items);
111 struct osdata_column *col = VEC_safe_push (osdata_column_s,
112 item->columns, NULL);
114 /* Transfer memory ownership. NAME was already strdup'ed. */
115 col->name = data->property_name;
116 col->value = xstrdup (body_text);
117 data->property_name = NULL;
120 /* Discard the constructed osdata (if an error occurs). */
123 clear_parsing_data (void *p)
125 struct osdata_parsing_data *data = p;
126 osdata_free (data->osdata);
128 xfree (data->property_name);
129 data->property_name = NULL;
132 /* The allowed elements and attributes for OS data object.
133 The root element is a <osdata>. */
135 const struct gdb_xml_attribute column_attributes[] = {
136 { "name", GDB_XML_AF_NONE, NULL, NULL },
137 { NULL, GDB_XML_AF_NONE, NULL, NULL }
140 const struct gdb_xml_element item_children[] = {
141 { "column", column_attributes, NULL,
142 GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
143 osdata_start_column, osdata_end_column },
144 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
147 const struct gdb_xml_attribute osdata_attributes[] = {
148 { "type", GDB_XML_AF_NONE, NULL, NULL },
149 { NULL, GDB_XML_AF_NONE, NULL, NULL }
152 const struct gdb_xml_element osdata_children[] = {
153 { "item", NULL, item_children,
154 GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
155 osdata_start_item, NULL },
156 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
159 const struct gdb_xml_element osdata_elements[] = {
160 { "osdata", osdata_attributes, osdata_children,
161 GDB_XML_EF_NONE, osdata_start_osdata, NULL },
162 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
166 osdata_parse (const char *xml)
168 struct gdb_xml_parser *parser;
169 struct cleanup *before_deleting_result, *back_to;
170 struct osdata_parsing_data data = { NULL };
172 back_to = make_cleanup (null_cleanup, NULL);
173 parser = gdb_xml_create_parser_and_cleanup (_("osdata"),
174 osdata_elements, &data);
175 gdb_xml_use_dtd (parser, "osdata.dtd");
177 before_deleting_result = make_cleanup (clear_parsing_data, &data);
179 if (gdb_xml_parse (parser, xml) == 0)
180 /* Parsed successfully, don't need to delete the result. */
181 discard_cleanups (before_deleting_result);
183 do_cleanups (back_to);
189 osdata_item_clear (struct osdata_item *item)
191 if (item->columns != NULL)
193 struct osdata_column *col;
196 VEC_iterate (osdata_column_s, item->columns,
203 VEC_free (osdata_column_s, item->columns);
204 item->columns = NULL;
209 osdata_free (struct osdata *osdata)
214 if (osdata->items != NULL)
216 struct osdata_item *item;
219 VEC_iterate (osdata_item_s, osdata->items,
222 osdata_item_clear (item);
223 VEC_free (osdata_item_s, osdata->items);
230 osdata_free_cleanup (void *arg)
232 struct osdata *osdata = arg;
233 osdata_free (osdata);
237 make_cleanup_osdata_free (struct osdata *data)
239 return make_cleanup (osdata_free_cleanup, data);
243 get_osdata (const char *type)
245 struct osdata *osdata = NULL;
246 char *xml = target_get_osdata (type);
249 struct cleanup *old_chain = make_cleanup (xfree, xml);
252 warning (_("Empty data returned by target. Wrong osdata type?"));
254 osdata = osdata_parse (xml);
256 do_cleanups (old_chain);
260 error (_("Can not fetch data now.\n"));
266 get_osdata_column (struct osdata_item *item, const char *name)
268 struct osdata_column *col;
272 VEC_iterate (osdata_column_s, item->columns,
275 if (strcmp (col->name, name) == 0)
282 info_osdata_command (char *type, int from_tty)
284 struct osdata *osdata = NULL;
285 struct osdata_item *last;
286 struct cleanup *old_chain;
291 /* TODO: No type could mean "list availables types". */
292 error (_("Argument required."));
294 osdata = get_osdata (type);
295 old_chain = make_cleanup_osdata_free (osdata);
297 nprocs = VEC_length (osdata_item_s, osdata->items);
299 last = VEC_last (osdata_item_s, osdata->items);
300 if (last && last->columns)
301 ncols = VEC_length (osdata_column_s, last->columns);
305 make_cleanup_ui_out_table_begin_end (uiout, ncols, nprocs,
308 if (last && last->columns)
310 struct osdata_column *col;
313 VEC_iterate (osdata_column_s, last->columns,
316 ui_out_table_header (uiout, 10, ui_left,
317 col->name, col->name);
320 ui_out_table_body (uiout);
324 struct osdata_item *item;
327 VEC_iterate (osdata_item_s, osdata->items,
331 struct cleanup *old_chain;
332 struct ui_stream *stb;
334 struct osdata_column *col;
336 stb = ui_out_stream_new (uiout);
337 old_chain = make_cleanup_ui_out_stream_delete (stb);
338 make_cleanup_ui_out_tuple_begin_end (uiout, "item");
341 VEC_iterate (osdata_column_s, item->columns,
344 ui_out_field_string (uiout, col->name, col->value);
346 do_cleanups (old_chain);
348 ui_out_text (uiout, "\n");
352 do_cleanups (old_chain);
355 extern initialize_file_ftype _initialize_osdata; /* -Wmissing-prototypes */
358 _initialize_osdata (void)
360 add_info ("os", info_osdata_command,
361 _("Show OS data ARG."));