1 /* Routines for handling XML generic OS data provided by target.
3 Copyright (C) 2008, 2009, 2010 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
};
87 VEC_safe_push (osdata_item_s
, data
->osdata
->items
, &item
);
90 /* Handle the start of a <column> element. */
93 osdata_start_column (struct gdb_xml_parser
*parser
,
94 const struct gdb_xml_element
*element
,
95 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
97 struct osdata_parsing_data
*data
= user_data
;
98 const char *name
= VEC_index (gdb_xml_value_s
, attributes
, 0)->value
;
100 data
->property_name
= xstrdup (name
);
103 /* Handle the end of a <column> element. */
106 osdata_end_column (struct gdb_xml_parser
*parser
,
107 const struct gdb_xml_element
*element
,
108 void *user_data
, const char *body_text
)
110 struct osdata_parsing_data
*data
= user_data
;
111 struct osdata
*osdata
= data
->osdata
;
112 struct osdata_item
*item
= VEC_last (osdata_item_s
, osdata
->items
);
113 struct osdata_column
*col
= VEC_safe_push (osdata_column_s
,
114 item
->columns
, NULL
);
116 /* Transfer memory ownership. NAME was already strdup'ed. */
117 col
->name
= data
->property_name
;
118 col
->value
= xstrdup (body_text
);
119 data
->property_name
= NULL
;
122 /* Discard the constructed osdata (if an error occurs). */
125 clear_parsing_data (void *p
)
127 struct osdata_parsing_data
*data
= p
;
129 osdata_free (data
->osdata
);
131 xfree (data
->property_name
);
132 data
->property_name
= NULL
;
135 /* The allowed elements and attributes for OS data object.
136 The root element is a <osdata>. */
138 const struct gdb_xml_attribute column_attributes
[] = {
139 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
140 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
143 const struct gdb_xml_element item_children
[] = {
144 { "column", column_attributes
, NULL
,
145 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
146 osdata_start_column
, osdata_end_column
},
147 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
150 const struct gdb_xml_attribute osdata_attributes
[] = {
151 { "type", GDB_XML_AF_NONE
, NULL
, NULL
},
152 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
155 const struct gdb_xml_element osdata_children
[] = {
156 { "item", NULL
, item_children
,
157 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
158 osdata_start_item
, NULL
},
159 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
162 const struct gdb_xml_element osdata_elements
[] = {
163 { "osdata", osdata_attributes
, osdata_children
,
164 GDB_XML_EF_NONE
, osdata_start_osdata
, NULL
},
165 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
169 osdata_parse (const char *xml
)
171 struct gdb_xml_parser
*parser
;
172 struct cleanup
*before_deleting_result
, *back_to
;
173 struct osdata_parsing_data data
= { NULL
};
175 back_to
= make_cleanup (null_cleanup
, NULL
);
176 parser
= gdb_xml_create_parser_and_cleanup (_("osdata"),
177 osdata_elements
, &data
);
178 gdb_xml_use_dtd (parser
, "osdata.dtd");
180 before_deleting_result
= make_cleanup (clear_parsing_data
, &data
);
182 if (gdb_xml_parse (parser
, xml
) == 0)
183 /* Parsed successfully, don't need to delete the result. */
184 discard_cleanups (before_deleting_result
);
186 do_cleanups (back_to
);
192 osdata_item_clear (struct osdata_item
*item
)
194 if (item
->columns
!= NULL
)
196 struct osdata_column
*col
;
200 VEC_iterate (osdata_column_s
, item
->columns
,
207 VEC_free (osdata_column_s
, item
->columns
);
208 item
->columns
= NULL
;
213 osdata_free (struct osdata
*osdata
)
218 if (osdata
->items
!= NULL
)
220 struct osdata_item
*item
;
224 VEC_iterate (osdata_item_s
, osdata
->items
,
227 osdata_item_clear (item
);
228 VEC_free (osdata_item_s
, osdata
->items
);
235 osdata_free_cleanup (void *arg
)
237 struct osdata
*osdata
= arg
;
239 osdata_free (osdata
);
243 make_cleanup_osdata_free (struct osdata
*data
)
245 return make_cleanup (osdata_free_cleanup
, data
);
249 get_osdata (const char *type
)
251 struct osdata
*osdata
= NULL
;
252 char *xml
= target_get_osdata (type
);
256 struct cleanup
*old_chain
= make_cleanup (xfree
, xml
);
261 warning (_("Empty data returned by target. Wrong osdata type?"));
263 warning (_("Empty type list returned by target. No type data?"));
266 osdata
= osdata_parse (xml
);
268 do_cleanups (old_chain
);
272 error (_("Can not fetch data now.\n"));
278 get_osdata_column (struct osdata_item
*item
, const char *name
)
280 struct osdata_column
*col
;
284 VEC_iterate (osdata_column_s
, item
->columns
,
287 if (strcmp (col
->name
, name
) == 0)
294 info_osdata_command (char *type
, int from_tty
)
296 struct osdata
*osdata
= NULL
;
297 struct osdata_item
*last
;
298 struct cleanup
*old_chain
;
302 osdata
= get_osdata (type
);
303 old_chain
= make_cleanup_osdata_free (osdata
);
305 nprocs
= VEC_length (osdata_item_s
, osdata
->items
);
307 if (!type
&& nprocs
== 0)
308 error (_("Available types of OS data not reported."));
310 last
= VEC_last (osdata_item_s
, osdata
->items
);
311 if (last
&& last
->columns
)
312 ncols
= VEC_length (osdata_column_s
, last
->columns
);
316 make_cleanup_ui_out_table_begin_end (uiout
, ncols
, nprocs
,
319 if (last
&& last
->columns
)
321 struct osdata_column
*col
;
325 VEC_iterate (osdata_column_s
, last
->columns
,
328 ui_out_table_header (uiout
, 10, ui_left
,
329 col
->name
, col
->name
);
332 ui_out_table_body (uiout
);
336 struct osdata_item
*item
;
340 VEC_iterate (osdata_item_s
, osdata
->items
,
344 struct cleanup
*old_chain
;
345 struct ui_stream
*stb
;
347 struct osdata_column
*col
;
349 stb
= ui_out_stream_new (uiout
);
350 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
351 make_cleanup_ui_out_tuple_begin_end (uiout
, "item");
354 VEC_iterate (osdata_column_s
, item
->columns
,
357 ui_out_field_string (uiout
, col
->name
, col
->value
);
359 do_cleanups (old_chain
);
361 ui_out_text (uiout
, "\n");
365 do_cleanups (old_chain
);
368 extern initialize_file_ftype _initialize_osdata
; /* -Wmissing-prototypes */
371 _initialize_osdata (void)
373 add_info ("os", info_osdata_command
,
374 _("Show OS data ARG."));