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/*
Copyright (C) 2011, 2020 R. Bernstein <rocky@gnu.org>
This file is part of GNU Make (remake variant).
GNU Make 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 2, or (at your option)
any later version.
GNU Make 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 GNU Make; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/** \file libdebugger/command/help.c
*
* \brief Debugger ``help` command.
*/
#include "../../src/trace.h"
#include "../cmd.h"
#include "../fns.h"
#include "../msg.h"
extern short_cmd_t short_command[256];
void
dbg_help_subcmd_entry(const char *psz_subcmd_name, const char *psz_fmt,
subcommand_var_info_t *p_subcmd, bool full_info)
{
if (full_info) {
const char *doc = p_subcmd->doc ?
p_subcmd->doc : p_subcmd->short_doc;
printf("%s ", psz_subcmd_name);
printf("%s\n%s.", p_subcmd->name, doc);
} else {
printf("%s ", psz_subcmd_name);
printf(psz_fmt, p_subcmd->name, p_subcmd->short_doc);
if (p_subcmd->var) {
if (p_subcmd->b_onoff)
printf(" is %s.",
var_to_on_off(* (int *) p_subcmd->var));
else
printf(" is %d.", *(int *)(p_subcmd->var));
}
}
printf("\n");
}
debug_return_t
dbg_help_subcmd(const char *psz_subcmd_name,
short_cmd_t *p_command, const char *psz_args,
subcommand_var_info_t *subcommands)
{
unsigned int i;
if (!psz_args || !*psz_args) {
printf("%s\n\n%s\n", p_command->use, p_command->doc);
} else {
for (i = 0; subcommands[i].name; i++) {
if (is_abbrev_of(psz_args, subcommands[i].name,
subcommands[i].min_abbrev)) {
dbg_help_subcmd_entry(psz_subcmd_name, "%s. %s",
&(subcommands[i]), true);
return debug_readloop;
}
}
dbg_errmsg("There is no \"%s %s\" command.", psz_subcmd_name, psz_args);
}
return debug_readloop;
}
static bool
is_alias(const char *psz_command_name, const alias_cmd_t *p_alias)
{
return strcmp (psz_command_name, p_alias->command) == 0;
}
debug_return_t
dbg_cmd_help(char *psz_args)
{
unsigned int i;
if (!psz_args || !*psz_args) {
printf (" Command Short Name Aliases\n");
printf (" ---------------------- ---------- ---------\n");
for (i = 0; dbg_commands[i].long_name; i++) {
unsigned int j;
bool b_alias = false;
uint8_t s=dbg_commands[i].short_name;
printf(" %-31s (%c)",
short_command[s].use, dbg_commands[i].short_name);
for (j = 0; aliases[j].alias; j++) {
if (is_alias(dbg_commands[i].long_name, &aliases[j])) {
if (!b_alias) {
printf(" %s", aliases[j].alias);
b_alias = true;
} else {
printf(", %s", aliases[j].alias);
}
}
}
printf("\n");
}
dbg_msg("\nReadline command line editing (emacs/vi mode) is available.\n"
"For more detailed help, type 'help *command-name*' or consult\n"
"the online-documentation.\n");
} else {
short_cmd_t *p_command;
const char *psz_command = "";
if (1 == strlen(psz_args)) {
if ( NULL != short_command[(uint8_t)psz_args[0]].func )
p_command = &short_command[(uint8_t)psz_args[0]];
else
p_command = NULL;
} else {
psz_command = get_word(&psz_args);
p_command = find_command (psz_command);
}
if (p_command) {
if ( p_command->func == &dbg_cmd_info ) {
return dbg_help_subcmd("info", p_command, psz_args, info_subcommands);
} else if ( p_command->func == &dbg_cmd_show ) {
return dbg_help_subcmd("show", p_command, psz_args, show_subcommands);
} else if ( p_command->func == &dbg_cmd_set ) {
return dbg_help_subcmd("set", p_command, psz_args, set_subcommands);
} else {
const long_cmd_t *p_long_command = &dbg_commands[p_command->id];
printf("%s\n\n", p_command->use);
printf("%s\n", p_command->doc);
printf("\nShort name and aliases: %c", p_long_command->short_name);
for (int j = 0; aliases[j].alias; j++) {
if (p_long_command->long_name && is_alias(p_long_command->long_name, &aliases[j])) {
printf(", %s", aliases[j].alias);
}
}
printf("\n");
}
} else {
dbg_errmsg("Undefined command `%s'. Try help for a list of commands.\n",
psz_command);
}
}
return debug_readloop;
}
/*
* Local variables:
* eval: (c-set-style "gnu")
* indent-tabs-mode: nil
* End:
*/
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