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Improve "help all".

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This commit is contained in:
Vladimir Prus
2006-10-31 11:45:41 +00:00
parent b138abaa40
commit 6e381ba0b0
3 changed files with 80 additions and 30 deletions
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15
gdb/ChangeLog
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@@ -1,3 +1,18 @@
2006-10-31 Vladimir Prus <vladimir@codesourcery.com>
* commands.h (enum command_class): Use different
values for class_deprecated and class_run.
* cli/cli-decode.c: (print_help_for_command): New.
(apropos_cmd): Use the above.
(help_list): Mention 'help all'
and 'apropos' when printing top-level help.
(help_all): Print the class name before printing
commands in that class. Don't print prefix commands
here, instead pass recurse flag to help_cmd_list.
Print list of unclassified commands at the end.
(help_cmd_list): When recursing, use all_commands class.
Recurse only if the class of the command matches.
2006-10-27 Andreas Schwab <schwab@suse.de>
* gdbcmd.h (detachlist): Declare.

93
gdb/cli/cli-decode.c
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@@ -46,6 +46,11 @@ static struct cmd_list_element *find_cmd (char *command,
int *nfound);
static void help_all (struct ui_file *stream);
static void
print_help_for_command (struct cmd_list_element *c, char *prefix, int recurse,
struct ui_file *stream);
/* Set the callback function for the specified command. For each both
the commands callback and func() are set. The latter set to a
@@ -687,14 +692,8 @@ apropos_cmd (struct ui_file *stream, struct cmd_list_element *commandlist,
returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL);
if (returnvalue >= 0)
{
/* Stolen from help_cmd_list. We don't directly use
* help_cmd_list because it doesn't let us print out
* single commands
*/
fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
print_doc_line (stream, c->doc);
fputs_filtered ("\n", stream);
returnvalue=0; /*Set this so we don't print it again.*/
print_help_for_command (c, prefix,
0 /* don't recurse */, stream);
}
}
if (c->doc != NULL && returnvalue != 0)
@@ -702,13 +701,8 @@ apropos_cmd (struct ui_file *stream, struct cmd_list_element *commandlist,
/* Try to match against documentation */
if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0)
{
/* Stolen from help_cmd_list. We don't directly use
* help_cmd_list because it doesn't let us print out
* single commands
*/
fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
print_doc_line (stream, c->doc);
fputs_filtered ("\n", stream);
print_help_for_command (c, prefix,
0 /* don't recurse */, stream);
}
}
/* Check if this command has subcommands */
@@ -845,6 +839,9 @@ Type \"help%s\" followed by a class name for a list of commands in ",
cmdtype1);
wrap_here ("");
fprintf_filtered (stream, "that class.");
fprintf_filtered (stream, "\n\
Type \"help all\" for the list of all commands.");
}
fprintf_filtered (stream, "\nType \"help%s\" followed by %scommand name ",
@@ -855,6 +852,8 @@ Type \"help%s\" followed by a class name for a list of commands in ",
fputs_filtered ("full ", stream);
wrap_here ("");
fputs_filtered ("documentation.\n", stream);
fputs_filtered ("Type \"apropos word\" to search "
"for commands related to \"word\".\n", stream);
fputs_filtered ("Command name abbreviations are allowed if unambiguous.\n",
stream);
}
@@ -864,19 +863,41 @@ help_all (struct ui_file *stream)
{
struct cmd_list_element *c;
extern struct cmd_list_element *cmdlist;
int seen_unclassified = 0;
for (c = cmdlist; c; c = c->next)
{
if (c->abbrev_flag)
continue;
/* If this is a prefix command, print it's subcommands */
if (c->prefixlist)
help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 0, stream);
/* If this is a class name, print all of the commands in the class */
else if (c->func == NULL)
help_cmd_list (cmdlist, c->class, "", 0, stream);
if (c->func == NULL)
{
fprintf_filtered (stream, "\nCommand class: %s\n\n", c->name);
help_cmd_list (cmdlist, c->class, "", 1, stream);
}
}
/* While it's expected that all commands are in some class,
as a safety measure, we'll print commands outside of any
class at the end. */
for (c = cmdlist; c; c = c->next)
{
if (c->abbrev_flag)
continue;
if (c->class == no_class)
{
if (!seen_unclassified)
{
fprintf_filtered (stream, "\nUnclassified commands\n\n");
seen_unclassified = 1;
}
print_help_for_command (c, "", 1, stream);
}
}
}
/* Print only the first line of STR on STREAM. */
@@ -909,6 +930,26 @@ print_doc_line (struct ui_file *stream, char *str)
ui_out_text (uiout, line_buffer);
}
/* Print one-line help for command C.
If RECURSE is non-zero, also print one-line descriptions
of all prefixed subcommands. */
static void
print_help_for_command (struct cmd_list_element *c, char *prefix, int recurse,
struct ui_file *stream)
{
fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
print_doc_line (stream, c->doc);
fputs_filtered ("\n", stream);
if (recurse
&& c->prefixlist != 0
&& c->abbrev_flag == 0)
/* Subcommands of a prefix command typically have 'all_commands'
as class. If we pass CLASS to recursive invocation,
most often we won't see anything. */
help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 1, stream);
}
/*
* Implement a help command on command list LIST.
* RECURSE should be non-zero if this should be done recursively on
@@ -932,20 +973,14 @@ help_cmd_list (struct cmd_list_element *list, enum command_class class,
struct cmd_list_element *c;
for (c = list; c; c = c->next)
{
{
if (c->abbrev_flag == 0 &&
(class == all_commands
|| (class == all_classes && c->func == NULL)
|| (class == c->class && c->func != NULL)))
{
fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
print_doc_line (stream, c->doc);
fputs_filtered ("\n", stream);
print_help_for_command (c, prefix, recurse, stream);
}
if (recurse
&& c->prefixlist != 0
&& c->abbrev_flag == 0)
help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream);
}
}

2
gdb/command.h
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@@ -30,7 +30,7 @@
enum command_class
{
/* Special args to help_list */
class_deprecated, all_classes = -2, all_commands = -1,
class_deprecated = -3, all_classes = -2, all_commands = -1,
/* Classes of commands */
no_class = -1, class_run = 0, class_vars, class_stack,
class_files, class_support, class_info, class_breakpoint, class_trace,