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openttd/console.c

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/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "table/strings.h"
#include "functions.h"
#include "window.h"
#include "gui.h"
#include "gfx.h"
#include "player.h"
#include "variables.h"
#include "string.h"
#include "hal.h"
#include <stdarg.h>
#include <string.h>
#include "console.h"
#include "network.h"
#include "network_data.h"
#include "network_server.h"
#define ICON_BUFFER 79
#define ICON_HISTORY_SIZE 20
#define ICON_LINE_HEIGHT 12
#define ICON_RIGHT_BORDERWIDTH 10
#define ICON_BOTTOM_BORDERWIDTH 12
#define ICON_MAX_ALIAS_LINES 40
#define ICON_TOKEN_COUNT 20
// ** main console ** //
static Window *_iconsole_win; // Pointer to console window
static bool _iconsole_inited;
static char *_iconsole_buffer[ICON_BUFFER + 1];
static uint16 _iconsole_cbuffer[ICON_BUFFER + 1];
static Textbuf _iconsole_cmdline;
static byte _iconsole_scroll;
// ** stdlib ** //
byte _stdlib_developer = 1;
bool _stdlib_con_developer = false;
FILE *_iconsole_output_file;
// ** main console cmd buffer
static char *_iconsole_history[ICON_HISTORY_SIZE];
static byte _iconsole_historypos;
/* *************** */
/* end of header */
/* *************** */
static void IConsoleClearCommand(void)
{
memset(_iconsole_cmdline.buf, 0, ICON_CMDLN_SIZE);
_iconsole_cmdline.length = 0;
_iconsole_cmdline.width = 0;
_iconsole_cmdline.caretpos = 0;
_iconsole_cmdline.caretxoffs = 0;
SetWindowDirty(_iconsole_win);
}
static inline void IConsoleResetHistoryPos(void) {_iconsole_historypos = ICON_HISTORY_SIZE - 1;}
// ** console window ** //
static void IConsoleWndProc(Window* w, WindowEvent* e)
{
switch (e->event) {
case WE_PAINT: {
int i = _iconsole_scroll;
int max = (w->height / ICON_LINE_HEIGHT) - 1;
int delta = 0;
GfxFillRect(w->left, w->top, w->width, w->height - 1, 0);
while ((i > 0) && (i > _iconsole_scroll - max) && (_iconsole_buffer[i] != NULL)) {
DoDrawString(_iconsole_buffer[i], 5,
w->height - (_iconsole_scroll + 2 - i) * ICON_LINE_HEIGHT, _iconsole_cbuffer[i]);
i--;
}
/* If the text is longer than the window, don't show the starting ']' */
delta = w->width - 10 - _iconsole_cmdline.width - ICON_RIGHT_BORDERWIDTH;
if (delta > 0) {
DoDrawString("]", 5, w->height - ICON_LINE_HEIGHT, _icolour_cmd);
delta = 0;
}
DoDrawString(_iconsole_cmdline.buf, 10 + delta, w->height - ICON_LINE_HEIGHT, _icolour_cmd);
if (_iconsole_cmdline.caret)
DoDrawString("_", 10 + delta + _iconsole_cmdline.caretxoffs, w->height - ICON_LINE_HEIGHT, 12);
break;
}
case WE_MOUSELOOP:
if (HandleCaret(&_iconsole_cmdline))
SetWindowDirty(w);
break;
case WE_DESTROY:
_iconsole_win = NULL;
_iconsole_mode = ICONSOLE_CLOSED;
break;
case WE_KEYPRESS:
e->keypress.cont = false;
switch (e->keypress.keycode) {
case WKC_UP:
IConsoleHistoryNavigate(+1);
SetWindowDirty(w);
break;
case WKC_DOWN:
IConsoleHistoryNavigate(-1);
SetWindowDirty(w);
break;
case WKC_SHIFT | WKC_PAGEUP:
if (_iconsole_scroll - (w->height / ICON_LINE_HEIGHT) - 1 < 0)
_iconsole_scroll = 0;
else
_iconsole_scroll -= (w->height / ICON_LINE_HEIGHT) - 1;
SetWindowDirty(w);
break;
case WKC_SHIFT | WKC_PAGEDOWN:
if (_iconsole_scroll + (w->height / ICON_LINE_HEIGHT) - 1 > ICON_BUFFER)
_iconsole_scroll = ICON_BUFFER;
else
_iconsole_scroll += (w->height / ICON_LINE_HEIGHT) - 1;
SetWindowDirty(w);
break;
case WKC_SHIFT | WKC_UP:
if (_iconsole_scroll <= 0)
_iconsole_scroll = 0;
else
--_iconsole_scroll;
SetWindowDirty(w);
break;
case WKC_SHIFT | WKC_DOWN:
if (_iconsole_scroll >= ICON_BUFFER)
_iconsole_scroll = ICON_BUFFER;
else
++_iconsole_scroll;
SetWindowDirty(w);
break;
case WKC_BACKQUOTE:
IConsoleSwitch();
break;
case WKC_RETURN: case WKC_NUM_ENTER:
IConsolePrintF(_icolour_cmd, "] %s", _iconsole_cmdline.buf);
IConsoleHistoryAdd(_iconsole_cmdline.buf);
IConsoleCmdExec(_iconsole_cmdline.buf);
IConsoleClearCommand();
break;
case WKC_CTRL | WKC_RETURN:
_iconsole_mode = (_iconsole_mode == ICONSOLE_FULL) ? ICONSOLE_OPENED : ICONSOLE_FULL;
IConsoleResize();
MarkWholeScreenDirty();
break;
case (WKC_CTRL | 'V'):
if (InsertTextBufferClipboard(&_iconsole_cmdline)) {
IConsoleResetHistoryPos();
SetWindowDirty(w);
}
break;
case (WKC_CTRL | 'L'):
IConsoleCmdExec("clear");
break;
case (WKC_CTRL | 'U'):
DeleteTextBufferAll(&_iconsole_cmdline);
SetWindowDirty(w);
break;
case WKC_BACKSPACE: case WKC_DELETE:
if (DeleteTextBufferChar(&_iconsole_cmdline, e->keypress.keycode)) {
IConsoleResetHistoryPos();
SetWindowDirty(w);
}
break;
case WKC_LEFT: case WKC_RIGHT: case WKC_END: case WKC_HOME:
if (MoveTextBufferPos(&_iconsole_cmdline, e->keypress.keycode)) {
IConsoleResetHistoryPos();
SetWindowDirty(w);
}
break;
default:
if (IsValidAsciiChar(e->keypress.ascii)) {
_iconsole_scroll = ICON_BUFFER;
InsertTextBufferChar(&_iconsole_cmdline, e->keypress.ascii);
IConsoleResetHistoryPos();
SetWindowDirty(w);
} else
e->keypress.cont = true;
break;
}
}
}
static const Widget _iconsole_window_widgets[] = {
{WIDGETS_END}
};
static const WindowDesc _iconsole_window_desc = {
0, 0, 2, 2,
WC_CONSOLE, 0,
WDF_STD_TOOLTIPS | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
_iconsole_window_widgets,
IConsoleWndProc,
};
void IConsoleInit(void)
{
extern const char _openttd_revision[];
_iconsole_output_file = NULL;
_icolour_def = 1;
_icolour_err = 3;
_icolour_warn = 13;
_icolour_dbg = 5;
_icolour_cmd = 2;
_iconsole_scroll = ICON_BUFFER;
_iconsole_historypos = ICON_HISTORY_SIZE - 1;
_iconsole_inited = true;
_iconsole_mode = ICONSOLE_CLOSED;
_iconsole_win = NULL;
#ifdef ENABLE_NETWORK /* Initialize network only variables */
_redirect_console_to_client = 0;
#endif
memset(_iconsole_history, 0, sizeof(_iconsole_history));
memset(_iconsole_buffer, 0, sizeof(_iconsole_buffer));
memset(_iconsole_cbuffer, 0, sizeof(_iconsole_cbuffer));
_iconsole_cmdline.buf = calloc(ICON_CMDLN_SIZE, sizeof(*_iconsole_cmdline.buf)); // create buffer and zero it
_iconsole_cmdline.maxlength = ICON_CMDLN_SIZE - 1;
IConsolePrintF(13, "OpenTTD Game Console Revision 7 - %s", _openttd_revision);
IConsolePrint(12, "------------------------------------");
IConsolePrint(12, "use \"help\" for more information");
IConsolePrint(12, "");
IConsoleStdLibRegister();
IConsoleClearCommand();
IConsoleHistoryAdd("");
}
void IConsoleClearBuffer(void)
{
uint i;
for (i = 0; i <= ICON_BUFFER; i++) {
free(_iconsole_buffer[i]);
_iconsole_buffer[i] = NULL;
}
}
static void IConsoleClear(void)
{
free(_iconsole_cmdline.buf);
IConsoleClearBuffer();
}
static void IConsoleWriteToLogFile(const char* string)
{
if (_iconsole_output_file != NULL) {
// if there is an console output file ... also print it there
fwrite(string, strlen(string), 1, _iconsole_output_file);
fwrite("\n", 1, 1, _iconsole_output_file);
}
}
bool CloseConsoleLogIfActive(void)
{
if (_iconsole_output_file != NULL) {
IConsolePrintF(_icolour_def, "file output complete");
fclose(_iconsole_output_file);
_iconsole_output_file = NULL;
return true;
}
return false;
}
void IConsoleFree(void)
{
_iconsole_inited = false;
IConsoleClear();
CloseConsoleLogIfActive();
}
void IConsoleResize(void)
{
_iconsole_win = FindWindowById(WC_CONSOLE, 0);
switch (_iconsole_mode) {
case ICONSOLE_OPENED:
_iconsole_win->height = _screen.height / 3;
_iconsole_win->width = _screen.width;
break;
case ICONSOLE_FULL:
_iconsole_win->height = _screen.height - ICON_BOTTOM_BORDERWIDTH;
_iconsole_win->width = _screen.width;
break;
default: break;
}
MarkWholeScreenDirty();
}
void IConsoleSwitch(void)
{
switch (_iconsole_mode) {
case ICONSOLE_CLOSED:
_iconsole_win = AllocateWindowDesc(&_iconsole_window_desc);
_iconsole_win->height = _screen.height / 3;
_iconsole_win->width = _screen.width;
_iconsole_mode = ICONSOLE_OPENED;
SETBIT(_no_scroll, SCROLL_CON); // override cursor arrows; the gamefield will not scroll
break;
case ICONSOLE_OPENED: case ICONSOLE_FULL:
DeleteWindowById(WC_CONSOLE, 0);
_iconsole_win = NULL;
_iconsole_mode = ICONSOLE_CLOSED;
CLRBIT(_no_scroll, SCROLL_CON);
break;
}
MarkWholeScreenDirty();
}
void IConsoleClose(void) {if (_iconsole_mode == ICONSOLE_OPENED) IConsoleSwitch();}
void IConsoleOpen(void) {if (_iconsole_mode == ICONSOLE_CLOSED) IConsoleSwitch();}
/**
* Add the entered line into the history so you can look it back
* scroll, etc. Put it to the beginning as it is the latest text
* @param cmd Text to be entered into the 'history'
*/
void IConsoleHistoryAdd(const char *cmd)
{
free(_iconsole_history[ICON_HISTORY_SIZE - 1]);
memmove(&_iconsole_history[1], &_iconsole_history[0], sizeof(_iconsole_history[0]) * (ICON_HISTORY_SIZE - 1));
_iconsole_history[0] = strdup(cmd);
IConsoleResetHistoryPos();
}
/**
* Navigate Up/Down in the history of typed commands
* @param direction Go further back in history (+1), go to recently typed commands (-1)
*/
void IConsoleHistoryNavigate(signed char direction)
{
int i = _iconsole_historypos + direction;
// watch out for overflows, just wrap around
if (i < 0) i = ICON_HISTORY_SIZE - 1;
if (i >= ICON_HISTORY_SIZE) i = 0;
if (direction > 0)
if (_iconsole_history[i] == NULL) i = 0;
if (direction < 0) {
while (i > 0 && _iconsole_history[i] == NULL) i--;
}
_iconsole_historypos = i;
IConsoleClearCommand();
// copy history to 'command prompt / bash'
assert(_iconsole_history[i] != NULL && IS_INT_INSIDE(i, 0, ICON_HISTORY_SIZE));
ttd_strlcpy(_iconsole_cmdline.buf, _iconsole_history[i], _iconsole_cmdline.maxlength);
UpdateTextBufferSize(&_iconsole_cmdline);
}
/**
* Handle the printing of text entered into the console or redirected there
* by any other means. Text can be redirected to other players in a network game
* as well as to a logfile. If the network server is a dedicated server, all activities
* are also logged. All lines to print are added to a temporary buffer which can be
* used as a history to print them onscreen
* @param color_code the colour of the command. Red in case of errors, etc.
* @param string the message entered or output on the console (notice, error, etc.)
*/
void IConsolePrint(uint16 color_code, const char* string)
{
#ifdef ENABLE_NETWORK
if (_redirect_console_to_client != 0) {
/* Redirect the string to the client */
SEND_COMMAND(PACKET_SERVER_RCON)(NetworkFindClientStateFromIndex(_redirect_console_to_client), color_code, string);
return;
}
#endif
if (_network_dedicated) {
printf("%s\n", string);
IConsoleWriteToLogFile(string);
return;
}
if (!_iconsole_inited) return;
/* move up all the strings in the buffer one place and do the same for colour
* to accomodate for the new command/message */
free(_iconsole_buffer[0]);
memmove(&_iconsole_buffer[0], &_iconsole_buffer[1], sizeof(_iconsole_buffer[0]) * ICON_BUFFER);
_iconsole_buffer[ICON_BUFFER] = strdup(string);
{ // filter out unprintable characters
char *i;
for (i = _iconsole_buffer[ICON_BUFFER]; *i != '\0'; i++)
if (!IsValidAsciiChar((byte)*i)) *i = ' ';
}
memmove(&_iconsole_cbuffer[0], &_iconsole_cbuffer[1], sizeof(_iconsole_cbuffer[0]) * ICON_BUFFER);
_iconsole_cbuffer[ICON_BUFFER] = color_code;
IConsoleWriteToLogFile(string);
if (_iconsole_win != NULL) SetWindowDirty(_iconsole_win);
}
/**
* Handle the printing of text entered into the console or redirected there
* by any other means. Uses printf() style format, for more information look
* at @IConsolePrint()
*/
void CDECL IConsolePrintF(uint16 color_code, const char *s, ...)
{
va_list va;
char buf[ICON_MAX_STREAMSIZE];
va_start(va, s);
vsnprintf(buf, sizeof(buf), s, va);
va_end(va);
IConsolePrint(color_code, buf);
}
/**
* It is possible to print debugging information to the console,
* which is achieved by using this function. Can only be used by
* @debug() in debug.c. You need at least a level 2 (developer) for debugging
* messages to show up
*/
void IConsoleDebug(const char* string)
{
if (_stdlib_developer > 1)
IConsolePrintF(_icolour_dbg, "dbg: %s", string);
}
/**
* It is possible to print warnings to the console. These are mostly
* errors or mishaps, but non-fatal. You need at least a level 1 (developer) for
* debugging messages to show up
*/
void IConsoleWarning(const char* string)
{
if (_stdlib_developer > 0)
IConsolePrintF(_icolour_warn, "WARNING: %s", string);
}
/**
* It is possible to print error information to the console. This can include
* game errors, or errors in general you would want the user to notice
*/
void IConsoleError(const char* string)
{
IConsolePrintF(_icolour_err, "ERROR: %s", string);
}
/**
* Change a string into its number representation. Supports
* decimal and hexadecimal numbers as well as 'on'/'off' 'true'/'false'
* @param *value the variable a successfull conversion will be put in
* @param *arg the string to be converted
* @return Return true on success or false on failure
*/
bool GetArgumentInteger(uint32 *value, const char *arg)
{
char *endptr;
if (strcmp(arg, "on") == 0 || strcmp(arg, "true") == 0) {
*value = 1;
return true;
}
if (strcmp(arg, "off") == 0 || strcmp(arg, "false") == 0) {
*value = 0;
return true;
}
*value = strtoul(arg, &endptr, 0);
return arg != endptr;
}
// * ************************* * //
// * hooking code * //
// * ************************* * //
/**
* General internal hooking code that is the same for both commands and variables
* @param hooks @IConsoleHooks structure that will be set according to
* @param type type access trigger
* @param proc function called when the hook criteria is met
*/
static void IConsoleHookAdd(IConsoleHooks *hooks, IConsoleHookTypes type, IConsoleHook *proc)
{
if (hooks == NULL || proc == NULL) return;
switch (type) {
case ICONSOLE_HOOK_ACCESS:
hooks->access = proc;
break;
case ICONSOLE_HOOK_PRE_ACTION:
hooks->pre = proc;
break;
case ICONSOLE_HOOK_POST_ACTION:
hooks->post = proc;
break;
default: NOT_REACHED();
}
}
/**
* Handle any special hook triggers. If the hook type is met check if
* there is a function associated with that and if so, execute it
* @param hooks @IConsoleHooks structure that will be checked
* @param type type of hook, trigger that needs to be activated
* @return true on a successfull execution of the hook command or if there
* is no hook/trigger present at all. False otherwise
*/
static bool IConsoleHookHandle(const IConsoleHooks *hooks, IConsoleHookTypes type)
{
IConsoleHook *proc = NULL;
if (hooks == NULL) return false;
switch (type) {
case ICONSOLE_HOOK_ACCESS:
proc = hooks->access;
break;
case ICONSOLE_HOOK_PRE_ACTION:
proc = hooks->pre;
break;
case ICONSOLE_HOOK_POST_ACTION:
proc = hooks->post;
break;
default: NOT_REACHED();
}
return (proc == NULL) ? true : proc();
}
/**
* Add a hook to a command that will be triggered at certain points
* @param name name of the command that the hook is added to
* @param type type of hook that is added (ACCESS, BEFORE and AFTER change)
* @param proc function called when the hook criteria is met
*/
void IConsoleCmdHookAdd(const char *name, IConsoleHookTypes type, IConsoleHook *proc)
{
IConsoleCmd *cmd = IConsoleCmdGet(name);
if (cmd == NULL) return;
IConsoleHookAdd(&cmd->hook, type, proc);
}
/**
* Add a hook to a variable that will be triggered at certain points
* @param name name of the variable that the hook is added to
* @param type type of hook that is added (ACCESS, BEFORE and AFTER change)
* @param proc function called when the hook criteria is met
*/
void IConsoleVarHookAdd(const char *name, IConsoleHookTypes type, IConsoleHook *proc)
{
IConsoleVar *var = IConsoleVarGet(name);
if (var == NULL) return;
IConsoleHookAdd(&var->hook, type, proc);
}
/**
* Perhaps ugly macro, but this saves us the trouble of writing the same function
* three types, just with different variables. Yes, templates would be handy. It was
* either this define or an even more ugly void* magic function
*/
#define IConsoleAddSorted(_base, item_new, IConsoleType, type) \
{ \
IConsoleType *item, *item_before; \
/* first command */ \
if (_base == NULL) { \
_base = item_new; \
return; \
} \
\
item_before = NULL; \
item = _base; \
\
/* BEGIN - Alphabetically insert the commands into the linked list */ \
while (item != NULL) { \
int i = strcmp(item->name, item_new->name); \
if (i == 0) { \
IConsoleError(type " with this name already exists; insertion aborted"); \
free(item_new); \
return; \
} \
\
if (i > 0) break; /* insert at this position */ \
\
item_before = item; \
item = item->next; \
} \
\
if (item_before == NULL) { \
_base = item_new; \
} else \
item_before->next = item_new; \
\
item_new->next = item; \
/* END - Alphabetical insert */ \
}
/**
* Register a new command to be used in the console
* @param name name of the command that will be used
* @param proc function that will be called upon execution of command
*/
void IConsoleCmdRegister(const char *name, IConsoleCmdProc *proc)
{
char *new_cmd = strdup(name);
IConsoleCmd *item_new = malloc(sizeof(IConsoleCmd));
item_new->next = NULL;
item_new->proc = proc;
item_new->name = new_cmd;
item_new->hook.access = NULL;
item_new->hook.pre = NULL;
item_new->hook.post = NULL;
IConsoleAddSorted(_iconsole_cmds, item_new, IConsoleCmd, "a command");
}
/**
* Find the command pointed to by its string
* @param name command to be found
* @return return Cmdstruct of the found command, or NULL on failure
*/
IConsoleCmd *IConsoleCmdGet(const char *name)
{
IConsoleCmd *item;
for (item = _iconsole_cmds; item != NULL; item = item->next) {
if (strcmp(item->name, name) == 0) return item;
}
return NULL;
}
/**
* Register a an alias for an already existing command in the console
* @param name name of the alias that will be used
* @param cmd name of the command that 'name' will be alias of
*/
void IConsoleAliasRegister(const char *name, const char *cmd)
{
char *new_alias = strdup(name);
char *cmd_aliased = strdup(cmd);
IConsoleAlias *item_new = malloc(sizeof(IConsoleAlias));
item_new->next = NULL;
item_new->cmdline = cmd_aliased;
item_new->name = new_alias;
IConsoleAddSorted(_iconsole_aliases, item_new, IConsoleAlias, "an alias");
}
/**
* Find the alias pointed to by its string
* @param name alias to be found
* @return return Aliasstruct of the found alias, or NULL on failure
*/
IConsoleAlias *IConsoleAliasGet(const char *name)
{
IConsoleAlias* item;
for (item = _iconsole_aliases; item != NULL; item = item->next) {
if (strcmp(item->name, name) == 0) return item;
}
return NULL;
}
/** copy in an argument into the aliasstream */
static inline int IConsoleCopyInParams(char *dst, const char *src, uint bufpos)
{
int len = min(ICON_MAX_STREAMSIZE - bufpos, strlen(src));
strncpy(dst, src, len);
return len;
}
/**
* An alias is just another name for a command, or for more commands
* Execute it as well.
* @param *alias is the alias of the command
* @param tokencount the number of parameters passed
* @param *tokens are the parameters given to the original command (0 is the first param)
*/
void IConsoleAliasExec(const IConsoleAlias *alias, byte tokencount, char *tokens[ICON_TOKEN_COUNT])
{
const char *cmdptr;
char *aliases[ICON_MAX_ALIAS_LINES], aliasstream[ICON_MAX_STREAMSIZE];
int i;
uint a_index, astream_i;
memset(&aliases, 0, sizeof(aliases));
memset(&aliasstream, 0, sizeof(aliasstream));
if (_stdlib_con_developer)
IConsolePrintF(_icolour_dbg, "condbg: requested command is an alias; parsing...");
aliases[0] = aliasstream;
for (cmdptr = alias->cmdline, a_index = 0, astream_i = 0; *cmdptr != '\0'; cmdptr++) {
if (a_index >= lengthof(aliases) || astream_i >= lengthof(aliasstream)) break;
switch (*cmdptr) {
case '\'': /* ' will double for "" */
aliasstream[astream_i++] = '"';
break;
case ';': /* Cmd seperator, start new command */
aliasstream[astream_i] = '\0';
aliases[++a_index] = &aliasstream[++astream_i];
cmdptr++;
break;
case '%': /* Some or all parameters */
cmdptr++;
switch (*cmdptr) {
case '+': { /* All parameters seperated: "[param 1]" "[param 2]" */
for (i = 0; i != tokencount; i++) {
aliasstream[astream_i++] = '"';
astream_i += IConsoleCopyInParams(&aliasstream[astream_i], tokens[i], astream_i);
aliasstream[astream_i++] = '"';
aliasstream[astream_i++] = ' ';
}
} break;
case '!': { /* Merge the parameters to one: "[param 1] [param 2] [param 3...]" */
aliasstream[astream_i++] = '"';
for (i = 0; i != tokencount; i++) {
astream_i += IConsoleCopyInParams(&aliasstream[astream_i], tokens[i], astream_i);
aliasstream[astream_i++] = ' ';
}
aliasstream[astream_i++] = '"';
} break;
default: { /* One specific parameter: %A = [param 1] %B = [param 2] ... */
int param = *cmdptr - 'A';
if (param < 0 || param >= tokencount) {
IConsoleError("too many or wrong amount of parameters passed to alias, aborting");
IConsolePrintF(_icolour_warn, "Usage of alias '%s': %s", alias->name, alias->cmdline);
return;
}
aliasstream[astream_i++] = '"';
astream_i += IConsoleCopyInParams(&aliasstream[astream_i], tokens[param], astream_i);
aliasstream[astream_i++] = '"';
} break;
} break;
default:
aliasstream[astream_i++] = *cmdptr;
break;
}
}
for (i = 0; i <= (int)a_index; i++) IConsoleCmdExec(aliases[i]); // execute each alias in turn
}
/**
* Special function for adding string-type variables. They in addition
* also need a 'size' value saying how long their string buffer is.
* @param size the length of the string buffer
* For more information see @IConsoleVarRegister()
*/
void IConsoleVarStringRegister(const char *name, void *addr, uint32 size, const char *help)
{
IConsoleVar *var;
IConsoleVarRegister(name, addr, ICONSOLE_VAR_STRING, help);
var = IConsoleVarGet(name);
var->size = size;
}
/**
* Register a new variable to be used in the console
* @param name name of the variable that will be used
* @param addr memory location the variable will point to
* @param help the help string shown for the variable
* @param type the type of the variable (simple atomic) so we know which values it can get
*/
void IConsoleVarRegister(const char *name, void *addr, IConsoleVarTypes type, const char *help)
{
char *new_cmd = strdup(name);
IConsoleVar *item_new = malloc(sizeof(IConsoleVar));
item_new->help = (help != NULL) ? strdup(help) : NULL;
item_new->next = NULL;
item_new->name = new_cmd;
item_new->addr = addr;
item_new->proc = NULL;
item_new->type = type;
item_new->hook.access = NULL;
item_new->hook.pre = NULL;
item_new->hook.post = NULL;
IConsoleAddSorted(_iconsole_vars, item_new, IConsoleVar, "a variable");
}
/**
* Find the variable pointed to by its string
* @param name variable to be found
* @return return Varstruct of the found variable, or NULL on failure
*/
IConsoleVar *IConsoleVarGet(const char *name)
{
IConsoleVar *item;
for (item = _iconsole_vars; item != NULL; item = item->next) {
if (strcmp(item->name, name) == 0) return item;
}
return NULL;
}
/**
* Set a new value to a console variable
* @param *var the variable being set/changed
* @param value the new value given to the variable, cast properly
*/
static void IConsoleVarSetValue(const IConsoleVar *var, uint32 value)
{
IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_PRE_ACTION);
switch (var->type) {
case ICONSOLE_VAR_BOOLEAN:
*(bool*)var->addr = (value != 0);
break;
case ICONSOLE_VAR_BYTE:
*(byte*)var->addr = (byte)value;
break;
case ICONSOLE_VAR_UINT16:
*(uint16*)var->addr = (uint16)value;
break;
case ICONSOLE_VAR_INT16:
*(int16*)var->addr = (int16)value;
break;
case ICONSOLE_VAR_UINT32:
*(uint32*)var->addr = (uint32)value;
break;
case ICONSOLE_VAR_INT32:
*(int32*)var->addr = (int32)value;
break;
default: NOT_REACHED();
}
IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_POST_ACTION);
IConsoleVarPrintSetValue(var);
}
/**
* Set a new value to a string-type variable. Basically this
* means to copy the new value over to the container.
* @param *var the variable in question
* @param *value the new value
*/
static void IConsoleVarSetStringvalue(const IConsoleVar *var, char *value)
{
if (var->type != ICONSOLE_VAR_STRING || var->addr == NULL) return;
IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_PRE_ACTION);
ttd_strlcpy((char*)var->addr, (char*)value, var->size);
IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_POST_ACTION);
IConsoleVarPrintSetValue(var); // print out the new value, giving feedback
return;
}
/**
* Query the current value of a variable and return it
* @param *var the variable queried
* @return current value of the variable
*/
static uint32 IConsoleVarGetValue(const IConsoleVar *var)
{
uint32 result = 0;
switch (var->type) {
case ICONSOLE_VAR_BOOLEAN:
result = *(bool*)var->addr;
break;
case ICONSOLE_VAR_BYTE:
result = *(byte*)var->addr;
break;
case ICONSOLE_VAR_UINT16:
result = *(uint16*)var->addr;
break;
case ICONSOLE_VAR_INT16:
result = *(int16*)var->addr;
break;
case ICONSOLE_VAR_UINT32:
result = *(uint32*)var->addr;
break;
case ICONSOLE_VAR_INT32:
result = *(int32*)var->addr;
break;
default: NOT_REACHED();
}
return result;
}
/**
* Get the value of the variable and put it into a printable
* string form so we can use it for printing
*/
static char *IConsoleVarGetStringValue(const IConsoleVar *var)
{
static char tempres[50];
char *value = tempres;
switch (var->type) {
case ICONSOLE_VAR_BOOLEAN:
snprintf(tempres, sizeof(tempres), "%s", (*(bool*)var->addr) ? "on" : "off");
break;
case ICONSOLE_VAR_BYTE:
snprintf(tempres, sizeof(tempres), "%u", *(byte*)var->addr);
break;
case ICONSOLE_VAR_UINT16:
snprintf(tempres, sizeof(tempres), "%u", *(uint16*)var->addr);
break;
case ICONSOLE_VAR_UINT32:
snprintf(tempres, sizeof(tempres), "%u", *(uint32*)var->addr);
break;
case ICONSOLE_VAR_INT16:
snprintf(tempres, sizeof(tempres), "%i", *(int16*)var->addr);
break;
case ICONSOLE_VAR_INT32:
snprintf(tempres, sizeof(tempres), "%i", *(int32*)var->addr);
break;
case ICONSOLE_VAR_STRING:
value = (char*)var->addr;
break;
default: NOT_REACHED();
}
return value;
}
/**
* Print out the value of the variable when asked
*/
void IConsoleVarPrintGetValue(const IConsoleVar *var)
{
char *value;
/* Some variables need really specific handling, handle this in its
* callback function */
if (var->proc != NULL) {
var->proc(0, NULL);
return;
}
value = IConsoleVarGetStringValue(var);
IConsolePrintF(_icolour_warn, "Current value for '%s' is: %s", var->name, value);
}
/**
* Print out the value of the variable after it has been assigned
* a new value, thus giving us feedback on the action
*/
void IConsoleVarPrintSetValue(const IConsoleVar *var)
{
char *value = IConsoleVarGetStringValue(var);
IConsolePrintF(_icolour_warn, "'%s' changed to: %s", var->name, value);
}
/**
* Execute a variable command. Without any parameters, print out its value
* with parameters it assigns a new value to the variable
* @param *var the variable that we will be querying/changing
* @param tokencount how many additional parameters have been given to the commandline
* @param *token the actual parameters the variable was called with
*/
void IConsoleVarExec(const IConsoleVar *var, byte tokencount, char *token[ICON_TOKEN_COUNT])
{
const char *tokenptr = token[0];
byte t_index = tokencount;
uint32 value;
if (_stdlib_con_developer)
IConsolePrintF(_icolour_dbg, "condbg: requested command is a variable");
if (tokencount == 0) { /* Just print out value */
IConsoleVarPrintGetValue(var);
return;
}
/* Use of assignment sign is not mandatory but supported, so just 'ignore it appropiately' */
if (strcmp(tokenptr, "=") == 0) tokencount--;
if (tokencount == 1) {
/* Some variables need really special handling, handle it in their callback procedure */
if (var->proc != NULL) {
var->proc(tokencount, &token[t_index - tokencount]); // set the new value
return;
}
/* Strings need special processing. No need to convert the argument to
* an integer value, just copy over the argument on a one-by-one basis */
if (var->type == ICONSOLE_VAR_STRING) {
IConsoleVarSetStringvalue(var, token[t_index - tokencount]);
return;
} else if (GetArgumentInteger(&value, token[t_index - tokencount])) {
IConsoleVarSetValue(var, value);
return;
}
/* Increase or decrease the value by one. This of course can only happen to 'number' types */
if (strcmp(tokenptr, "++") == 0 && var->type != ICONSOLE_VAR_STRING) {
IConsoleVarSetValue(var, IConsoleVarGetValue(var) + 1);
return;
}
if (strcmp(tokenptr, "--") == 0 && var->type != ICONSOLE_VAR_STRING) {
IConsoleVarSetValue(var, IConsoleVarGetValue(var) - 1);
return;
}
}
IConsoleError("invalid variable assignment");
}
/**
* Add a callback function to the variable. Some variables need
* very special processing, which can only be done with custom code
* @param name name of the variable the callback function is added to
* @param proc the function called
*/
void IConsoleVarProcAdd(const char *name, IConsoleCmdProc *proc)
{
IConsoleVar *var = IConsoleVarGet(name);
if (var == NULL) return;
var->proc = proc;
}
/**
* Execute a given command passed to us. First chop it up into
* individual tokens (seperated by spaces), then execute it if possible
* @param cmdstr string to be parsed and executed
*/
void IConsoleCmdExec(const char *cmdstr)
{
IConsoleCmd *cmd = NULL;
IConsoleAlias *alias = NULL;
IConsoleVar *var = NULL;
const char *cmdptr;
char *tokens[ICON_TOKEN_COUNT], tokenstream[ICON_MAX_STREAMSIZE];
uint t_index, tstream_i;
bool longtoken = false;
bool foundtoken = false;
if (cmdstr[0] == '#') return; // comments
for (cmdptr = cmdstr; *cmdptr != '\0'; cmdptr++) {
if (!IsValidAsciiChar(*cmdptr)) {
IConsoleError("command contains malformed characters, aborting");
IConsolePrintF(_icolour_err, "ERROR: command was: '%s'", cmdstr);
return;
}
}
if (_stdlib_con_developer)
IConsolePrintF(_icolour_dbg, "condbg: executing cmdline: '%s'", cmdstr);
memset(&tokens, 0, sizeof(tokens));
memset(&tokenstream, 0, sizeof(tokenstream));
/* 1. Split up commandline into tokens, seperated by spaces, commands
* enclosed in "" are taken as one token. We can only go as far as the amount
* of characters in our stream or the max amount of tokens we can handle */
for (cmdptr = cmdstr, t_index = 0, tstream_i = 0; *cmdptr != '\0'; cmdptr++) {
if (t_index >= lengthof(tokens) || tstream_i >= lengthof(tokenstream)) break;
switch (*cmdptr) {
case ' ': /* Token seperator */
if (!foundtoken) break;
if (longtoken) {
tokenstream[tstream_i] = *cmdptr;
} else {
tokenstream[tstream_i] = '\0';
foundtoken = false;
}
tstream_i++;
break;
case '"': /* Tokens enclosed in "" are one token */
longtoken = !longtoken;
break;
default: /* Normal character */
tokenstream[tstream_i++] = *cmdptr;
if (!foundtoken) {
tokens[t_index++] = &tokenstream[tstream_i - 1];
foundtoken = true;
}
break;
}
}
if (_stdlib_con_developer) {
uint i;
for (i = 0; tokens[i] != NULL; i++)
IConsolePrintF(_icolour_dbg, "condbg: token %d is: '%s'", i, tokens[i]);
}
if (tokens[0] == '\0') return; // don't execute empty commands
/* 2. Determine type of command (cmd, alias or variable) and execute
* First try commands, then aliases, and finally variables. Execute
* the found action taking into account its hooking code
*/
cmd = IConsoleCmdGet(tokens[0]);
if (cmd != NULL) {
if (IConsoleHookHandle(&cmd->hook, ICONSOLE_HOOK_ACCESS)) {
IConsoleHookHandle(&cmd->hook, ICONSOLE_HOOK_PRE_ACTION);
if (cmd->proc(t_index, tokens)) { // index started with 0
IConsoleHookHandle(&cmd->hook, ICONSOLE_HOOK_POST_ACTION);
} else cmd->proc(0, NULL); // if command failed, give help
}
return;
}
t_index--; // ignore the variable-name for comfort for both aliases and variaables
alias = IConsoleAliasGet(tokens[0]);
if (alias != NULL) {
IConsoleAliasExec(alias, t_index, &tokens[1]);
return;
}
var = IConsoleVarGet(tokens[0]);
if (var != NULL) {
if (IConsoleHookHandle(&var->hook, ICONSOLE_HOOK_ACCESS))
IConsoleVarExec(var, t_index, &tokens[1]);
return;
}
IConsoleError("command or variable not found");
}
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