binutils-gdb/gdb/osdata.c

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/* Routines for handling XML generic OS data provided by target.
Copyright (C) 2008-2013 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "target.h"
#include "vec.h"
#include "xml-support.h"
#include "osdata.h"
#include "gdb_string.h"
#include "ui-out.h"
#include "gdbcmd.h"
#if !defined(HAVE_LIBEXPAT)
struct osdata *
osdata_parse (const char *xml)
{
static int have_warned;
if (!have_warned)
{
have_warned = 1;
warning (_("Can not parse XML OS data; XML support was disabled "
"at compile time"));
}
return NULL;
}
#else /* HAVE_LIBEXPAT */
#include "xml-support.h"
/* Internal parsing data passed to all XML callbacks. */
struct osdata_parsing_data
{
struct osdata *osdata;
char *property_name;
};
/* Handle the start of a <osdata> element. */
static void
osdata_start_osdata (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
void *user_data, VEC(gdb_xml_value_s) *attributes)
{
struct osdata_parsing_data *data = user_data;
char *type;
struct osdata *osdata;
if (data->osdata)
gdb_xml_error (parser, _("Seen more than on osdata element"));
type = xml_find_attribute (attributes, "type")->value;
osdata = XZALLOC (struct osdata);
osdata->type = xstrdup (type);
data->osdata = osdata;
}
/* Handle the start of a <item> element. */
static void
osdata_start_item (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
void *user_data, VEC(gdb_xml_value_s) *attributes)
{
struct osdata_parsing_data *data = user_data;
struct osdata_item item = { NULL };
VEC_safe_push (osdata_item_s, data->osdata->items, &item);
}
/* Handle the start of a <column> element. */
static void
osdata_start_column (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
void *user_data, VEC(gdb_xml_value_s) *attributes)
{
struct osdata_parsing_data *data = user_data;
const char *name = xml_find_attribute (attributes, "name")->value;
data->property_name = xstrdup (name);
}
/* Handle the end of a <column> element. */
static void
osdata_end_column (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
void *user_data, const char *body_text)
{
struct osdata_parsing_data *data = user_data;
struct osdata *osdata = data->osdata;
struct osdata_item *item = VEC_last (osdata_item_s, osdata->items);
struct osdata_column *col = VEC_safe_push (osdata_column_s,
item->columns, NULL);
/* Transfer memory ownership. NAME was already strdup'ed. */
col->name = data->property_name;
col->value = xstrdup (body_text);
data->property_name = NULL;
}
/* Discard the constructed osdata (if an error occurs). */
static void
clear_parsing_data (void *p)
{
struct osdata_parsing_data *data = p;
osdata_free (data->osdata);
data->osdata = NULL;
xfree (data->property_name);
data->property_name = NULL;
}
/* The allowed elements and attributes for OS data object.
The root element is a <osdata>. */
const struct gdb_xml_attribute column_attributes[] = {
{ "name", GDB_XML_AF_NONE, NULL, NULL },
{ NULL, GDB_XML_AF_NONE, NULL, NULL }
};
const struct gdb_xml_element item_children[] = {
{ "column", column_attributes, NULL,
GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
osdata_start_column, osdata_end_column },
{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
};
const struct gdb_xml_attribute osdata_attributes[] = {
{ "type", GDB_XML_AF_NONE, NULL, NULL },
{ NULL, GDB_XML_AF_NONE, NULL, NULL }
};
const struct gdb_xml_element osdata_children[] = {
{ "item", NULL, item_children,
GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
osdata_start_item, NULL },
{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
};
const struct gdb_xml_element osdata_elements[] = {
{ "osdata", osdata_attributes, osdata_children,
GDB_XML_EF_NONE, osdata_start_osdata, NULL },
{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
};
struct osdata *
osdata_parse (const char *xml)
{
struct cleanup *back_to;
struct osdata_parsing_data data = { NULL };
back_to = make_cleanup (clear_parsing_data, &data);
if (gdb_xml_parse_quick (_("osdata"), "osdata.dtd",
osdata_elements, xml, &data) == 0)
{
/* Parsed successfully, don't need to delete the result. */
discard_cleanups (back_to);
return data.osdata;
}
do_cleanups (back_to);
return NULL;
}
#endif
static void
osdata_item_clear (struct osdata_item *item)
{
if (item->columns != NULL)
{
struct osdata_column *col;
int ix;
for (ix = 0;
VEC_iterate (osdata_column_s, item->columns,
ix, col);
ix++)
{
xfree (col->name);
xfree (col->value);
}
VEC_free (osdata_column_s, item->columns);
item->columns = NULL;
}
}
void
osdata_free (struct osdata *osdata)
{
if (osdata == NULL)
return;
if (osdata->items != NULL)
{
struct osdata_item *item;
int ix;
for (ix = 0;
VEC_iterate (osdata_item_s, osdata->items,
ix, item);
ix++)
osdata_item_clear (item);
VEC_free (osdata_item_s, osdata->items);
}
xfree (osdata);
}
static void
osdata_free_cleanup (void *arg)
{
struct osdata *osdata = arg;
osdata_free (osdata);
}
struct cleanup *
make_cleanup_osdata_free (struct osdata *data)
{
return make_cleanup (osdata_free_cleanup, data);
}
struct osdata *
get_osdata (const char *type)
{
struct osdata *osdata = NULL;
char *xml = target_get_osdata (type);
if (xml)
{
struct cleanup *old_chain = make_cleanup (xfree, xml);
if (xml[0] == '\0')
{
if (type)
warning (_("Empty data returned by target. Wrong osdata type?"));
else
warning (_("Empty type list returned by target. No type data?"));
}
else
osdata = osdata_parse (xml);
do_cleanups (old_chain);
}
if (!osdata)
error (_("Can not fetch data now."));
return osdata;
}
const char *
get_osdata_column (struct osdata_item *item, const char *name)
{
struct osdata_column *col;
int ix_cols;
for (ix_cols = 0;
VEC_iterate (osdata_column_s, item->columns,
ix_cols, col);
ix_cols++)
if (strcmp (col->name, name) == 0)
return col->value;
return NULL;
}
void
info_osdata_command (char *type, int from_tty)
{
2011-08-04 Pedro Alves <pedro@codesourcery.com> * ui-out.h (uiout): Rename to ... (current_uiout): ... this. * ui-out.c (uiout): Rename to ... (current_uiout): ... this. * ada-lang.c (print_it_exception, print_one_exception) (print_mention_exception): Adjust. * breakpoint.c (watchpoint_check): Adjust. (print_breakpoint_location, print_one_breakpoint, breakpoint_1) (default_collect_info, watchpoints_info, print_one_catch_fork) (print_one_catch_vfork, print_one_catch_syscall) (print_one_catch_exec, mention, print_it_ranged_breakpoint) (print_one_ranged_breakpoint, print_mention_ranged_breakpoint) (print_it_watchpoint, print_mention_watchpoint) (print_it_masked_watchpoint, print_mention_masked_watchpoint) (print_it_exception_catchpoint, print_one_exception_catchpoint) (print_mention_exception_catchpoint, say_where, bkpt_print_it) (bkpt_print_mention, momentary_bkpt_print_it) (tracepoint_print_mention, update_static_tracepoint) (tracepoints_info, save_breakpoints): Adjust. * cli-out.c (field_separator): Adjust. * cp-abi.c (list_cp_abis, show_cp_abi_cmd): Adjust. * exceptions.c (catch_exceptions_with_msg, catch_errors): Adjust. * frame.c (get_current_frame): Adjust. * infcmd.c (run_command_1, print_return_value): Adjust. * inferior.c (inferior_command, info_inferiors_command): Adjust. * infrun.c (print_end_stepping_range_reason): Adjust. (print_signal_exited_reason, print_exited_reason): Adjust. (print_signal_received_reason, print_no_history_reason): Adjust. * interps.c (interp_set): Adjust. * osdata.c (info_osdata_command): Adjust. * progspace.c (maintenance_info_program_spaces_command): Adjust. * remote-fileio.c (remote_fileio_request): Adjust. * remote.c (show_remote_cmd): Adjust. * solib.c (info_sharedlibrary_command): Adjust. * source.c (print_source_lines_base): Adjust. * stack.c (print_stack_frame): Adjust. (do_gdb_disassembly, print_frame_info, print_frame): Adjust. * symfile-mem.c (add_vsyscall_page): Adjust. * symfile.c (load_progress, generic_load) (print_transfer_performance): Adjust. * thread.c (info_threads_command, restore_selected_frame) (thread_command): Adjust. * top.c (make_cleanup_restore_ui_file): Adjust. * tracepoint.c (tvariables_info_1, trace_status_mi, tfind_1) (print_one_static_tracepoint_marker): Adjust. * cli/cli-cmds.c (print_disassembly): Adjust. * cli/cli-decode.c (print_doc_line): Adjust. * cli/cli-interp.c (safe_execute_command): Adjust. * cli/cli-logging.c (set_logging_redirect, pop_output_files) (handle_redirections): Adjust. * cli/cli-script.c (show_user_1): Adjust. * cli/cli-setshow.c (do_setshow_command, cmd_show_list): Adjust. * mi/mi-cmd-break.c (breakpoint_notify): Adjust. * mi/mi-cmd-disas.c (mi_cmd_disassemble): Adjust. * mi/mi-cmd-env.c (mi_cmd_env_pwd, mi_cmd_env_path) (mi_cmd_env_dir): Adjust. * mi/mi-cmd-file.c (mi_cmd_file_list_exec_source_file) (print_partial_file_name, mi_cmd_file_list_exec_source_files): Adjust. * mi/mi-cmd-stack.c (mi_cmd_stack_list_frames) (mi_cmd_stack_info_depth, mi_cmd_stack_list_args) (list_args_or_locals): Adjust. * mi/mi-cmd-var.c (print_varobj, mi_cmd_var_create) (mi_cmd_var_delete, mi_cmd_var_set_format, mi_cmd_var_set_frozen) (mi_cmd_var_show_format, mi_cmd_var_info_num_children) (mi_cmd_var_list_children, mi_cmd_var_info_type) (mi_cmd_var_info_path_expression, mi_cmd_var_info_expression) (mi_cmd_var_show_attributes, mi_cmd_var_evaluate_expression) (mi_cmd_var_assign, mi_cmd_var_update, varobj_update_one): Adjust. * mi/mi-interp.c (mi_on_normal_stop): Adjust. * mi/mi-main.c (mi_cmd_gdb_exit, mi_cmd_thread_select) (mi_cmd_thread_list_ids, mi_cmd_thread_info, print_one_inferior) (list_available_thread_groups, mi_cmd_list_thread_groups) (mi_cmd_data_list_register_names) (mi_cmd_data_list_changed_registers) (mi_cmd_data_list_register_values, get_register) (mi_cmd_data_evaluate_expression, mi_cmd_data_read_memory) (mi_cmd_data_read_memory_bytes, mi_cmd_list_features) (mi_cmd_list_target_features, mi_cmd_add_inferior) (mi_execute_command, mi_load_progress): Adjust. * mi/mi-symbol-cmds.c (mi_cmd_symbol_list_lines): Adjust. * python/py-auto-load.c (print_script, info_auto_load_scripts): Adjust. * python/py-breakpoint.c (bppy_get_commands): Adjust. * tui/tui-interp.c (tui_command_loop): Adjust. * tui/tui-io.c (tui_setup_io, tui_initialize_io): Adjust.
2011-08-04 21:10:14 +02:00
struct ui_out *uiout = current_uiout;
struct osdata *osdata = NULL;
struct osdata_item *last = NULL;
struct cleanup *old_chain;
int ncols = 0;
int nrows;
int col_to_skip = -1;
osdata = get_osdata (type);
old_chain = make_cleanup_osdata_free (osdata);
nrows = VEC_length (osdata_item_s, osdata->items);
if (!type && nrows == 0)
error (_("Available types of OS data not reported."));
if (!VEC_empty (osdata_item_s, osdata->items))
{
last = VEC_last (osdata_item_s, osdata->items);
if (last->columns)
ncols = VEC_length (osdata_column_s, last->columns);
/* As a special case, scan the listing of available data types
for a column named "Title", and only include it with MI
output; this column's normal use is for titles for interface
elements like menus, and it clutters up CLI output. */
if (!type && !ui_out_is_mi_like_p (uiout))
{
struct osdata_column *col;
int ix;
for (ix = 0;
VEC_iterate (osdata_column_s, last->columns, ix, col);
ix++)
{
if (strcmp (col->name, "Title") == 0)
col_to_skip = ix;
}
/* Be sure to reduce the total column count, otherwise
internal errors ensue. */
if (col_to_skip >= 0)
--ncols;
}
}
make_cleanup_ui_out_table_begin_end (uiout, ncols, nrows,
"OSDataTable");
/* With no columns/items, we just output an empty table, but we
still output the table. This matters for MI. */
if (ncols == 0)
{
do_cleanups (old_chain);
return;
}
if (last && last->columns)
{
struct osdata_column *col;
int ix;
for (ix = 0;
VEC_iterate (osdata_column_s, last->columns,
ix, col);
ix++)
{
char col_name[32];
if (ix == col_to_skip)
continue;
snprintf (col_name, 32, "col%d", ix);
ui_out_table_header (uiout, 10, ui_left,
col_name, col->name);
}
}
ui_out_table_body (uiout);
if (nrows != 0)
{
struct osdata_item *item;
int ix_items;
for (ix_items = 0;
VEC_iterate (osdata_item_s, osdata->items,
ix_items, item);
ix_items++)
{
struct cleanup *old_chain;
int ix_cols;
struct osdata_column *col;
2012-03-27 21:08:37 +02:00
old_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "item");
for (ix_cols = 0;
VEC_iterate (osdata_column_s, item->columns,
ix_cols, col);
ix_cols++)
{
char col_name[32];
if (ix_cols == col_to_skip)
continue;
snprintf (col_name, 32, "col%d", ix_cols);
ui_out_field_string (uiout, col_name, col->value);
}
do_cleanups (old_chain);
ui_out_text (uiout, "\n");
}
}
do_cleanups (old_chain);
}
extern initialize_file_ftype _initialize_osdata; /* -Wmissing-prototypes */
void
_initialize_osdata (void)
{
add_info ("os", info_osdata_command,
_("Show OS data ARG."));
}