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bitchx/source/alias.c

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/*
* alias.c Handles command aliases for irc.c
*
* Written By Michael Sandrof
*
* Copyright(c) 1990, 1995 Michael Sandroff and others
*
* See the COPYRIGHT file, or do a HELP IRCII COPYRIGHT
*/
#define _cs_alist_hash_
#include "irc.h"
static char cvsrevision[] = "$Id$";
CVS_REVISION(alias_c)
#include "struct.h"
#include "alias.h"
#include "alist.h"
#include "array.h"
#include "dcc.h"
#include "commands.h"
#include "files.h"
#include "history.h"
#include "hook.h"
#include "input.h"
#include "ircaux.h"
#include "names.h"
#include "notify.h"
#include "numbers.h"
#include "output.h"
#include "parse.h"
#include "screen.h"
#include "server.h"
#include "status.h"
#include "vars.h"
#include "window.h"
#include "ircterm.h"
#include "server.h"
#include "list.h"
#include "keys.h"
#include "userlist.h"
#include "misc.h"
#include "newio.h"
#include "stack.h"
#include "module.h"
#include "timer.h"
#define MAIN_SOURCE
#include "modval.h"
#include <sys/stat.h>
#define LEFT_BRACE '{'
#define RIGHT_BRACE '}'
#define LEFT_BRACKET '['
#define RIGHT_BRACKET ']'
#define LEFT_PAREN '('
#define RIGHT_PAREN ')'
#define DOUBLE_QUOTE '"'
#ifdef WANT_DLL
#ifdef dll_functions
#error blah
#endif
BuiltInDllFunctions *dll_functions = NULL;
#endif
/* Used for statistics gathering */
static unsigned long alias_total_allocated = 0;
static unsigned long alias_total_bytes_allocated = 0;
static unsigned long var_cache_hits = 0;
static unsigned long var_cache_misses = 0;
static unsigned long var_cache_missed_by = 0;
static unsigned long var_cache_passes = 0;
static unsigned long cmd_cache_hits = 0;
static unsigned long cmd_cache_misses = 0;
static unsigned long cmd_cache_missed_by = 0;
static unsigned long cmd_cache_passes = 0;
int last_function_call_level = -1;
/* Ugh. XXX Bag on the side */
ArgList *parse_arglist (char *arglist);
void destroy_arglist (ArgList *);
static void delete_all_var_alias (char *name);
static void delete_cmd_alias (char *name, int owd);
static void list_cmd_alias (char *name);
static void list_var_alias (char *name);
static void list_local_alias (char *name);
static char * get_variable_with_args (const char *str, const char *args, int *args_flag);
void add_cmd_alias (char *, ArgList *, char *);
/*
* after_expando: This replaces some much more complicated logic strewn
* here and there that attempted to figure out just how long an expando
* name was supposed to be. Well, now this changes that. This will slurp
* up everything in 'start' that could possibly be put after a $ that could
* result in a syntactically valid expando. All you need to do is tell it
* if the expando is an rvalue or an lvalue (it *does* make a difference)
*/
static char *lval[] = { "rvalue", "lvalue" };
char *after_expando (char *start, int lvalue, int *call)
{
char *rest;
char *str;
/*
* One or two leading colons are allowed
*/
if (!*start)
return start;
str = start;
if (*str == ':')
if (*++str == ':')
++str;
/*
* This handles 99.99% of the cases
*/
while (*str && (isalpha((unsigned char)*str) || isdigit((unsigned char)*str) || *str == '_' || *str == '.'))
str++;
/*
* This handles any places where a var[var] could sneak in on
* us. Supposedly this should never happen, but who can tell?
*/
while (*str == '[')
{
if (!(rest = MatchingBracket(str + 1, '[', ']')))
{
if (!(rest = strchr(str, ']')))
{
debugyell("Unmatched bracket in %s (%s)",
lval[lvalue], start);
return empty_string;
}
}
str = rest + 1;
}
/*
* Rvalues may include a function call, slurp up the argument list.
*/
if (!lvalue && *str == '(')
{
if (!(rest = MatchingBracket(str + 1, '(', ')')))
{
if (!(rest = strchr(str, ')')))
{
debugyell("Unmatched paren in %s (%s)",
lval[lvalue], start);
return empty_string;
}
}
*call = 1;
str = rest + 1;
}
/*
* If the entire thing looks to be invalid, perhaps its a
* special built-in expando. Check to see if it is, and if it
* is, then slurp up the first character as valid.
*/
if (str == start || (str == start + 1 && *start == ':'))
{
int is_builtin = 0;
built_in_alias(*start, &is_builtin);
if (is_builtin && (str == start))
str++;
}
/*
* All done!
*/
return str;
}
/*
* aliascmd: The user interface for /ALIAS
*/
BUILT_IN_COMMAND(aliascmd)
{
char *name;
char *real_name;
char *ptr;
void show_alias_caches(void);
/*
* If no name present, list all aliases
*/
if (!(name = next_arg(args, &args)))
{
list_cmd_alias(NULL);
return;
}
/*
* Alias can take an /s arg, which shows some data we've collected
*/
if (!my_strnicmp(name, "/S", 2))
{
extern u_32int_t bin_ints;
extern u_32int_t lin_ints;
extern u_32int_t bin_chars;
extern u_32int_t lin_chars;
extern u_32int_t alist_searches;
extern u_32int_t char_searches;
say("Total aliases handled: %ld",
alias_total_allocated);
say("Total bytes allocated to aliases: %ld",
alias_total_bytes_allocated);
say("Var command hits/misses/passes/missed-by [%ld/%ld/%ld/%3.1f]",
var_cache_hits,
var_cache_misses,
var_cache_passes,
( var_cache_misses ? (double)
(var_cache_missed_by / var_cache_misses) : 0.0));
say("Cmd command hits/misses/passes/missed-by [%ld/%ld/%ld/%3.1f]",
cmd_cache_hits,
cmd_cache_misses,
cmd_cache_passes,
( cmd_cache_misses ? (double)
(cmd_cache_missed_by / cmd_cache_misses) : 0.0));
say("Ints(bin/lin)/Chars(bin/lin)/Lookups: [(%d/%d)/(%d/%d)] (%d/%d)",
bin_ints, lin_ints, bin_chars, lin_chars,
alist_searches, char_searches);
show_alias_caches();
return;
}
/*
* Canonicalize the alias name
*/
real_name = remove_brackets(name, NULL, NULL);
/*
* Find the argument body
*/
while (my_isspace(*args))
args++;
/*
* If there is no argument body, we probably want to delete alias
*/
if (!args || !*args)
{
/*
* If the alias name starts with a hyphen, then we are
* going to delete it.
*/
if (real_name[0] == '-')
{
if (real_name[1])
delete_cmd_alias(real_name + 1, window_display);
else
say("You must specify an alias to be removed.");
}
/*
* Otherwise, the user wants us to list that alias
*/
else
list_cmd_alias(real_name);
}
/*
* If there is an argument body, then we have to register it
*/
else
{
ArgList *arglist = NULL;
/*
* Aliases may contain a parameter list, which is parsed
* at registration time.
*/
if (*args == LEFT_PAREN)
{
ptr = MatchingBracket(++args, LEFT_PAREN, RIGHT_PAREN);
if (!ptr)
say("Unmatched lparen in %s %s",
command, real_name);
else
{
*ptr++ = 0;
while (*ptr && my_isspace(*ptr))
ptr++;
if (!*ptr)
say("Missing alias body in %s %s",
command, real_name);
while (*args && my_isspace(*args))
args++;
arglist = parse_arglist(args);
args = ptr;
}
}
/*
* Aliases' bodies can be surrounded by a set of braces,
* which are stripped off.
*/
if (*args == LEFT_BRACE)
{
ptr = MatchingBracket(++args, LEFT_BRACE, RIGHT_BRACE);
if (!ptr)
say("Unmatched brace in %s %s", command, real_name);
else
{
*ptr++ = 0;
while (*ptr && my_isspace(*ptr))
ptr++;
if (*ptr)
say("Junk [%s] after closing brace in %s %s", ptr, command, real_name);
while (*args && my_isspace(*args))
args++;
}
}
/*
* Register the alias
*/
add_cmd_alias(real_name, arglist, args);
}
new_free(&real_name);
return;
}
BUILT_IN_COMMAND(purge)
{
char *arg, *real_name;
while ((arg = next_arg(args, &args)))
{
real_name = remove_brackets(arg, NULL, NULL);
delete_all_var_alias(real_name);
new_free(&real_name);
}
}
/*
* User front end to the ASSIGN command
* Syntax to add variable: ASSIGN name text
* Syntax to delete variable: ASSIGN -name
*/
BUILT_IN_COMMAND(assigncmd)
{
char *real_name;
char *name;
/*
* If there are no arguments, list all the global variables
*/
if (!(name = next_arg(args, &args)))
{
list_var_alias(NULL);
return;
}
/*
* Canonicalize the variable name
*/
real_name = remove_brackets(name, NULL, NULL);
/*
* Find the stuff to assign to the variable
*/
while (my_isspace(*args))
args++;
/*
* If there is no body, then the user probably wants to delete
* the variable
*/
if (!args || !*args)
{
/*
* If the variable name starts with a hyphen, then we remove
* the variable
*/
if (real_name[0] == '-')
{
if (real_name[1])
delete_var_alias(real_name + 1, window_display);
else
say("You must specify an alias to be removed.");
}
/*
* Otherwise, the user wants us to list the variable
*/
else
list_var_alias(real_name);
}
/*
* Register the variable
*/
else
add_var_alias(real_name, args);
new_free(&real_name);
return;
}
/*
* User front end to the STUB command
* Syntax to stub an alias to a file: STUB ALIAS name[,name] filename(s)
* Syntax to stub a variable to a file: STUB ASSIGN name[,name] filename(s)
*/
BUILT_IN_COMMAND(stubcmd)
{
int type;
char *cmd;
char *name;
/*
* The first argument is the type of stub to make
* (alias or assign)
*/
if (!(cmd = upper(next_arg(args, &args))))
{
error("Missing Stub type");
return;
}
if (!strncmp(cmd, "ALIAS", strlen(cmd)))
type = COMMAND_ALIAS;
else if (!strncmp(cmd, "ASSIGN", strlen(cmd)))
type = VAR_ALIAS;
else
{
error("[%s] is an Unrecognized stub type", cmd);
return;
}
/*
* The next argument is the name of the item to be stubbed.
* This is not optional.
*/
if (!(name = next_arg(args, &args)))
{
error("Missing alias name");
return;
}
/*
* Find the filename argument
*/
while (my_isspace(*args))
args++;
/*
* The rest of the argument(s) are the files to load when the
* item is referenced. This is not optional.
*/
if (!args || !*args)
{
error("Missing file name");
return;
}
/*
* Now we iterate over the item names we were given. For each
* item name, seperated from the next by a comma, stub that item
* to the given filename(s) specified as the arguments.
*/
while (name && *name)
{
char *next_name;
char *real_name;
if ((next_name = strchr(name, ',')))
*next_name++ = 0;
real_name = remove_brackets(name, NULL, NULL);
if (type == COMMAND_ALIAS)
add_cmd_stub_alias(real_name, args);
else
add_var_stub_alias(real_name, args);
new_free(&real_name);
name = next_name;
}
}
BUILT_IN_COMMAND(localcmd)
{
char *name;
if (!(name = next_arg(args, &args)))
{
list_local_alias(NULL);
return;
}
while (args && *args && my_isspace(*args))
args++;
if (!args)
args = empty_string;
while (name && *name)
{
char *next_name;
char *real_name;
if ((next_name = strchr(name, ',')))
*next_name++ = 0;
real_name = remove_brackets(name, NULL, NULL);
add_local_alias(real_name, args);
new_free(&real_name);
name = next_name;
}
}
BUILT_IN_COMMAND(dumpcmd)
{
FILE *fp;
char *filename = NULL;
char *expand = NULL;
char *blah;
if (!args || !*args)
{
if (!command)
{
destroy_aliases(COMMAND_ALIAS);
destroy_aliases(VAR_ALIAS);
destroy_aliases(VAR_ALIAS_LOCAL);
flush_on_hooks();
delete_all_ext_fset();
delete_all_timers();
delete_all_arrays();
}
return;
}
while ((blah = next_arg(args, &args)))
{
if (!my_strnicmp(blah,"FI",2))
{
#ifdef PUBLIC_ACCESS
bitchsay("This command has been disabled on a public access system");
return;
#else
malloc_sprintf(&filename, "~/%s.dump", version);
expand = expand_twiddle(filename);
new_free(&filename);
if ((fp = fopen(expand, "w")) != NULL)
{
save_bindings(fp, 0);
save_hooks(fp, 0);
save_variables(fp, 0);
save_aliases(fp, 0);
save_assigns(fp, 0);
save_servers(fp);
fclose(fp);
}
bitchsay("Saved to ~/%s.dump", version);
new_free(&expand);
#endif
}
else if (!my_strnicmp(blah,"BIND",4) || !my_strnicmp(blah, "KEY", 3))
{
remove_bindings();
init_keys();
init_keys2();
}
else if (!my_strnicmp(blah, "AR", 2))
delete_all_arrays();
else if (!my_strnicmp(blah,"V",1))
destroy_aliases(VAR_ALIAS);
else if (!my_strnicmp(blah,"ALI",3))
destroy_aliases(COMMAND_ALIAS);
else if (!my_strnicmp(blah,"O",1))
flush_on_hooks();
else if (!my_strnicmp(blah,"CH",2))
flush_channel_stats();
else if (!my_strnicmp(blah,"LO",2))
destroy_aliases(VAR_ALIAS_LOCAL);
else if (!my_strnicmp(blah, "TI", 2))
delete_all_timers();
else if (!my_strnicmp(blah, "FS", 2))
{
create_fsets(NULL, get_int_var(DISPLAY_ANSI_VAR));
delete_all_ext_fset();
}
else if (!my_strnicmp(blah, "WS", 2))
{
Window *win = NULL;
while (traverse_all_windows(&win))
{
if (win->wset)
{
remove_wsets_for_window(win);
win->wset = create_wsets_for_window(win);
build_status(win, NULL, 0);
}
}
}
else if (!my_strnicmp(blah, "CS", 2))
{
ChannelList *chan;
if (from_server == -1)
return;
for (chan = get_server_channels(from_server); chan; chan = chan->next)
{
remove_csets_for_channel(chan->csets);
chan->csets = create_csets_for_channel(chan->channel);
}
}
else if (!my_strnicmp(blah,"ALL",3))
{
remove_bindings();
init_keys();
init_keys2();
destroy_aliases(COMMAND_ALIAS);
destroy_aliases(VAR_ALIAS);
destroy_aliases(VAR_ALIAS_LOCAL);
flush_on_hooks();
delete_all_timers();
delete_all_ext_fset();
delete_all_arrays();
}
}
}
/*
* Argument lists look like this:
*
* LIST := LPAREN TERM [COMMA TERM] RPAREN)
* LPAREN := '('
* RPAREN := ')'
* COMMA := ','
* TERM := LVAL QUAL | "..." | "void"
* LVAL := <An alias name>
* QUAL := NUM "words"
*
* In English:
* An argument list is a comma seperated list of variable descriptors (TERM)
* enclosed in a parenthesis set. Each variable descriptor may contain any
* valid alias name followed by an action qualifier, or may be the "..."
* literal string, or may be the "void" literal string. If a variable
* descriptor is an alias name, then that positional argument will be removed
* from the argument list and assigned to that variable. If the qualifier
* specifies how many words are to be taken, then that many are taken.
* If the variable descriptor is the literal string "...", then all argument
* list parsing stops there and all remaining alias arguments are placed
* into the $* special variable. If the variable descriptor is the literal
* string "void", then the balance of the remaining alias arguments are
* discarded and $* will expand to the false value. If neither "..." nor
* "void" are provided in the argument list, then that last variable in the
* list will recieve all of the remaining arguments left at its position.
*
* Examples:
*
* # This example puts $0 in $channel, $1 in $mag, and $2- in $nicklist.
* /alias opalot (channel, mag, nicklist) {
* fe ($nicklist) xx yy zz {
* mode $channel ${mag}ooo $xx $yy $zz
* }
* }
*
* # This example puts $0 in $channel, $1 in $mag, and the new $* is old $2-
* /alias opalot (channel, mag, ...) {
* fe ($*) xx yy zz {
* mode $channel ${mag}ooo $xx $yy $zz
* }
* }
*
* # This example throws away any arguments passed to this alias
* /alias booya (void) { echo Booya! }
*/
ArgList *parse_arglist (char *arglist)
{
char * this_term;
char * next_term;
char * varname;
char * modifier, *value;
int arg_count = 0;
ArgList *args = new_malloc(sizeof(ArgList));
args->void_flag = args->dot_flag = 0;
for (this_term = arglist; *this_term; this_term = next_term,arg_count++)
{
while (isspace((unsigned char)*this_term))
this_term++;
next_in_comma_list(this_term, &next_term);
if (!(varname = next_arg(this_term, &this_term)))
continue;
if (!my_stricmp(varname, "void")) {
args->void_flag = 1;
break;
} else if (!my_stricmp(varname, "...")) {
args->dot_flag = 1;
break;
} else {
args->vars[arg_count] = m_strdup(varname);
args->defaults[arg_count] = NULL;
if (!(modifier = next_arg(this_term, &this_term)))
continue;
if (!my_stricmp(modifier, "default"))
{
if (!(value = new_next_arg(this_term, &this_term)))
continue;
args->defaults[arg_count] = m_strdup(value);
}
}
}
args->vars[arg_count] = NULL;
return args;
}
void destroy_arglist (ArgList *arglist)
{
int i = 0;
if (!arglist)
return;
for (i = 0; ; i++)
{
if (!arglist->vars[i])
break;
new_free(&arglist->vars[i]);
new_free(&arglist->defaults[i]);
}
new_free((char **)&arglist);
}
void prepare_alias_call (void *al, char **stuff)
{
ArgList *args = (ArgList *)al;
int i;
if (!args)
return;
for (i = 0; args->vars[i]; i++)
{
char *next_val;
char *expanded = NULL;
int af;
/* Last argument on the list and no ... argument? */
if (!args->vars[i + 1] && !args->dot_flag && !args->void_flag)
{
next_val = *stuff;
*stuff = empty_string;
}
/* Yank the next word from the arglist */
else
next_val = next_arg(*stuff, stuff);
if (!next_val || !*next_val)
{
if ((next_val = args->defaults[i]))
next_val = expanded = expand_alias(next_val, *stuff, &af, NULL);
else
next_val = empty_string;
}
/* Add the local variable */
add_local_alias(args->vars[i], next_val);
if (expanded)
new_free(&expanded);
}
/* Throw away rest of args if wanted */
if (args->void_flag)
*stuff = empty_string;
}
/**************************** INTERMEDIATE INTERFACE *********************/
/* We define Alias here to keep it encapsulated */
/*
* This is the description of an alias entry
* This is an ``array_item'' structure
*/
/*
* This is the description for a list of aliases
* This is an ``array_set'' structure
*/
#define ALIAS_CACHE_SIZE 10
typedef struct AliasStru
{
Alias **list;
int max;
int max_alloc;
alist_func func;
Alias **cache;
int cache_size;
int revoke_index;
} AliasSet;
static AliasSet var_alias = { NULL, 0, 0, strncmp, NULL, 0, 0 };
static AliasSet cmd_alias = { NULL, 0, 0, strncmp, NULL, 0, 0 };
Alias * find_var_alias (char *name);
static Alias * find_cmd_alias (char *name, int *cnt);
static Alias * find_local_alias (char *name, AliasSet **list);
/*
* This is the ``stack frame''. Each frame has a ``name'' which is
* the name of the alias or on of the frame, or is NULL if the frame
* is not an ``enclosing'' frame. Each frame also has a ``current command''
* that is being executed, which is used to help us when the client crashes.
* Each stack also contains a list of local variables.
*/
typedef struct RuntimeStackStru
{
char *name; /* Name of the stack */
char *current; /* Current cmd being executed */
AliasSet alias; /* Local variables */
int locked;
int parent;
} RuntimeStack;
/*
* This is the master stack frame. Its size is saved in ``max_wind''
* and the current frame being used is stored in ``wind_index''.
*/
static RuntimeStack *call_stack = NULL;
int max_wind = -1;
int wind_index = -1;
void show_alias_caches(void)
{
int i;
for (i = 0; i < var_alias.cache_size; i++)
{
if (var_alias.cache[i])
debugyell("VAR cache [%d]: [%s] [%s]", i, var_alias.cache[i]->name, var_alias.cache[i]->stuff);
else
debugyell("VAR cache [%d]: empty", i);
}
for (i = 0; i < cmd_alias.cache_size; i++)
{
if (cmd_alias.cache[i])
debugyell("CMD cache [%d]: [%s] [%s]", i, cmd_alias.cache[i]->name, cmd_alias.cache[i]->stuff);
else
debugyell("CMD cache [%d]: empty", i);
}
}
Alias *make_new_Alias (char *name)
{
Alias *tmp = (Alias *) new_malloc(sizeof(Alias));
tmp->name = m_strdup(name);
tmp->stuff = tmp->stub = NULL;
alias_total_bytes_allocated += sizeof(Alias) + strlen(name);
return tmp;
}
/*
* add_var_alias: Add a global variable
*
* name -- name of the alias to create (must be canonicalized)
* stuff -- what to have ``name'' expand to.
*
* If ``name'' is FUNCTION_RETURN, then it will create the local
* return value (die die die)
*
* If ``name'' refers to an already created local variable, that
* local variable is used (invisibly)
*/
void add_var_alias (char *name, char *stuff)
{
char *ptr;
Alias *tmp = NULL;
int af;
int local = 0;
char *save;
save = name = remove_brackets(name, NULL, &af);
if (*name == ':')
{
name++, local = 1;
if (*name == ':')
name++, local = -1;
}
/*
* Weed out invalid variable names
*/
ptr = after_expando(name, 1, NULL);
if (*ptr)
error("ASSIGN names may not contain '%c' (You asked for [%s])", *ptr, name);
/*
* Weed out FUNCTION_RETURN (die die die)
*/
else if (!strcmp(name, "FUNCTION_RETURN"))
add_local_alias(name, stuff);
/*
* Pass the buck on local variables
*/
else if ((local == 1) || ((local == 0) && find_local_alias(name, NULL)))
add_local_alias(name, stuff);
else if (stuff && *stuff)
{
int cnt, loc;
/*
* Look to see if the given alias already exists.
* If it does, and the ``stuff'' to assign to it is
* empty, then we should remove the variable outright
*/
tmp = (Alias *) find_array_item ((Array *)&var_alias, name, &cnt, &loc);
if (!tmp || cnt >= 0)
{
tmp = make_new_Alias(name);
add_to_array ((Array *)&var_alias, (Array_item *)tmp);
}
/*
* Then we fill in the interesting details
*/
malloc_strcpy(&(tmp->stuff), stuff);
new_free(&tmp->stub);
tmp->global = loading_global;
alias_total_allocated++;
alias_total_bytes_allocated += strlen(tmp->name) + strlen(tmp->stuff);
/*
* And tell the user.
*/
say("Assign %s added [%s]", name, stuff);
}
else
delete_var_alias(name, window_display);
new_free(&save);
return;
}
void add_local_alias (char *name, char *stuff)
{
char *ptr;
Alias *tmp = NULL;
AliasSet *list = NULL;
int af;
name = remove_brackets(name, NULL, &af);
/*
* Weed out invalid variable names
*/
ptr = after_expando(name, 1, NULL);
if (*ptr)
{
error("LOCAL names may not contain '%c' (You asked for [%s])", *ptr, name);
new_free(&name);
return;
}
/*
* Now we see if this local variable exists anywhere
* within our view. If it is, we dont care where.
* If it doesnt, then we add it to the current frame,
* where it will be reaped later.
*/
if (!(tmp = find_local_alias (name, &list)))
{
tmp = make_new_Alias(name);
add_to_array ((Array *)list, (Array_item *)tmp);
}
/* Fill in the interesting stuff */
malloc_strcpy(&(tmp->stuff), stuff);
alias_total_allocated++;
alias_total_bytes_allocated += strlen(tmp->stuff);
if (x_debug & DEBUG_LOCAL_VARS)
debugyell("Assign %s (local) added [%s]", name, stuff);
else
say("Assign %s (local) added [%s]", name, stuff);
new_free(&name);
return;
}
void add_cmd_alias (char *name, ArgList *arglist, char *stuff)
{
Alias *tmp = NULL;
int cnt, af, loc;
name = remove_brackets(name, NULL, &af);
tmp = (Alias *) find_array_item ((Array *)&cmd_alias, name, &cnt, &loc);
if (!tmp || cnt >= 0)
{
tmp = make_new_Alias(name);
add_to_array ((Array *)&cmd_alias, (Array_item *)tmp);
}
malloc_strcpy(&(tmp->stuff), stuff);
new_free(&tmp->stub);
tmp->global = loading_global;
tmp->arglist = arglist;
alias_total_allocated++;
alias_total_bytes_allocated += strlen(tmp->stuff);
say("Alias %s added [%s]", name, stuff);
new_free(&name);
return;
}
void add_var_stub_alias (char *name, char *stuff)
{
Alias *tmp = NULL;
char *ptr;
int af;
name = remove_brackets(name, NULL, &af);
ptr = after_expando(name, 1, NULL);
if (*ptr)
error("Assign names may not contain '%c' (You asked for [%s])", *ptr, name);
else if (!strcmp(name, "FUNCTION_RETURN"))
error("You may not stub the FUNCTION_RETURN variable.");
else
{
int cnt, loc;
tmp = (Alias *) find_array_item ((Array *)&var_alias, name, &cnt, &loc);
if (!tmp || cnt >= 0)
{
tmp = make_new_Alias(name);
add_to_array ((Array *)&var_alias, (Array_item *)tmp);
}
malloc_strcpy(&(tmp->stub), stuff);
new_free(&tmp->stuff);
tmp->global = loading_global;
alias_total_allocated++;
alias_total_bytes_allocated += strlen(tmp->stub);
say("Assign %s stubbed to file %s", name, stuff);
}
new_free(&name);
return;
}
void add_cmd_stub_alias (char *name, char *stuff)
{
Alias *tmp = NULL;
int cnt, af;
name = remove_brackets(name, NULL, &af);
if (!(tmp = find_cmd_alias(name, &cnt)) || cnt >= 0)
{
tmp = make_new_Alias(name);
add_to_array ((Array *)&cmd_alias, (Array_item *)tmp);
}
malloc_strcpy(&(tmp->stub), stuff);
new_free(&tmp->stuff);
tmp->global = loading_global;
alias_total_allocated++;
alias_total_bytes_allocated += strlen(tmp->stub);
say("Assign %s stubbed to file %s", name, stuff);
new_free(&name);
return;
}
/************************ LOW LEVEL INTERFACE *************************/
/* XXXX */
static void unstub_alias (Alias *item);
static void resize_cache (AliasSet *set, int newsize)
{
int c, d;
int oldsize = set->cache_size;
set->cache_size = newsize;
if (newsize < oldsize)
{
for (d = oldsize; d < newsize; d++)
set->cache[d]->cache_revoked = ++set->revoke_index;
}
RESIZE(set->cache, Alias *, set->cache_size);
for (c = oldsize; c < set->cache_size; c++)
set->cache[c] = NULL;
}
/*
* 'name' is expected to already be in canonical form (uppercase, dot notation)
*/
Alias * find_var_alias (char *name)
{
Alias *item = NULL;
register int cache;
int loc;
int cnt = 0;
register int i;
u_32int_t mask;
u_32int_t hash = cs_alist_hash(name, &mask);
if (!strcmp(name, "::"))
name +=2;
if (var_alias.cache_size == 0)
resize_cache(&var_alias, ALIAS_CACHE_SIZE);
for (cache = 0; cache < var_alias.cache_size; cache++)
{
if (var_alias.cache[cache] &&
var_alias.cache[cache]->name &&
(var_alias.cache[cache]->hash == hash) &&
!strcmp(name, var_alias.cache[cache]->name))
{
item = var_alias.cache[cache];
cnt = -1;
var_cache_hits++;
break;
}
}
if (!item)
{
cache = var_alias.cache_size - 1;
if ((item = (Alias *) find_array_item ((Array *)&var_alias, name, &cnt, &loc)))
var_cache_misses++;
else
var_cache_passes++;
}
if (cnt < 0)
{
if (var_alias.cache[cache])
var_alias.cache[cache]->cache_revoked = ++var_alias.revoke_index;
for (i = cache; i > 0; i--)
var_alias.cache[i] = var_alias.cache[i - 1];
var_alias.cache[0] = item;
if (item->cache_revoked)
var_cache_missed_by += var_alias.revoke_index - item->cache_revoked;
if (item->stub)
{
unstub_alias(item);
if (!(item = find_var_alias(name)))
return NULL;
if (!item->stuff)
{
delete_var_alias(item->name, 0);
return NULL;
}
}
return item;
}
return NULL;
}
static Alias * find_cmd_alias (char *name, int *cnt)
{
Alias *item = NULL;
int loc;
register int i;
register int cache;
u_32int_t mask;
u_32int_t hash = cs_alist_hash(name, &mask);
if (cmd_alias.cache_size == 0)
resize_cache(&cmd_alias, ALIAS_CACHE_SIZE);
for (cache = 0; cache < cmd_alias.cache_size; cache++)
{
if (cmd_alias.cache[cache] && cmd_alias.cache[cache]->name &&
(cmd_alias.cache[cache]->hash == hash) &&
!strcmp(name, cmd_alias.cache[cache]->name))
{
item = cmd_alias.cache[cache];
*cnt = -1;
cmd_cache_hits++;
break;
}
if (cmd_alias.cache[cache] && !cmd_alias.cache[cache]->name)
cmd_alias.cache[cache] = NULL;
}
if (!item)
{
cache = cmd_alias.cache_size - 1;
if ((item = (Alias *) find_array_item ((Array *)&cmd_alias, name, cnt, &loc)))
cmd_cache_misses++;
else
cmd_cache_passes++;
}
if (*cnt < 0 || *cnt == 1)
{
if (cmd_alias.cache[cache])
cmd_alias.cache[cache]->cache_revoked = ++cmd_alias.revoke_index;
for (i = cache; i > 0; i--)
cmd_alias.cache[i] = cmd_alias.cache[i - 1];
cmd_alias.cache[0] = item;
if (item->cache_revoked)
cmd_cache_missed_by += cmd_alias.revoke_index - item->cache_revoked;
if (item->stub)
{
unstub_alias(item);
if (!(find_cmd_alias(name, cnt)))
return NULL;
if (!item->stuff)
{
delete_cmd_alias(item->name, 0);
*cnt = 0;
return NULL;
}
}
if (item->stuff)
return item;
/* XXXXXXXXXXXXXXXXXXXXXXXXX */
}
return NULL;
}
static void unstub_alias (Alias *item)
{
static int already_looking = 0;
char *copy;
copy = LOCAL_COPY(item->stub);
new_free((char **)&item->stub);
/*
* If already_looking is 1, then
* we are un-stubbing this alias
* because we are loading a file
* that presumably it must be in.
* So we dont load it again (duh).
*/
if (already_looking)
return;
already_looking = 1;
load("LOAD", copy, empty_string, NULL);
already_looking = 0;
}
/*
* An example will best describe the semantics:
*
* A local variable will be returned if and only if there is already a
* variable that is exactly ``name'', or if there is a variable that
* is an exact leading subset of ``name'' and that variable ends in a
* period (a dot).
*/
static Alias * find_local_alias (char *name, AliasSet **list)
{
Alias *alias = NULL;
int c = wind_index;
char *ptr;
int implicit = -1;
int function_return = 0;
/* No name is an error */
if (!name)
return NULL;
ptr = after_expando(name, 1, NULL);
if (*ptr || !call_stack)
return NULL;
if (!my_stricmp(name, "FUNCTION_RETURN"))
function_return = 1;
/*
* Search our current local variable stack, and wind our way
* backwards until we find a NAMED stack -- that is the enclosing
* alias or ON call. If we find a variable in one of those enclosing
* stacks, then we use it. If we dont, we progress.
*
* This needs to be optimized for the degenerate case, when there
* is no local variable available... It will be true 99.999% of
* the time.
*/
for (c = wind_index; c >= 0; c = call_stack[c].parent)
{
/* XXXXX */
if (function_return && last_function_call_level != -1)
c = last_function_call_level;
if (x_debug & DEBUG_LOCAL_VARS)
debugyell("Looking for [%s] in level [%d]", name, c);
if (call_stack[c].alias.list)
{
register int x;
/* XXXX - This is bletcherous */
for (x = 0; x < call_stack[c].alias.max; x++)
{
size_t len = strlen(call_stack[c].alias.list[x]->name);
if (streq(call_stack[c].alias.list[x]->name, name) == len)
{
if (call_stack[c].alias.list[x]->name[len-1] == '.')
implicit = c;
else if (strlen(name) == len)
{
alias = call_stack[c].alias.list[x];
break;
}
}
else
{
if (my_stricmp(call_stack[c].alias.list[x]->name, name) > 0)
continue;
}
}
if (!alias && implicit >= 0)
{
alias = make_new_Alias(name);
add_to_array ((Array *)&call_stack[implicit].alias, (Array_item *)alias);
}
}
if (alias)
{
if (x_debug & DEBUG_LOCAL_VARS)
debugyell("I found [%s] in level [%d] (%s)", name, c, alias->stuff);
break;
}
if (*call_stack[c].name || call_stack[c].parent == -1)
{
if (x_debug & DEBUG_LOCAL_VARS)
debugyell("I didnt find [%s], stopped at level [%d]", name, c);
break;
}
}
if (alias)
{
if (list)
*list = &call_stack[c].alias;
return alias;
}
else if (list)
*list = &call_stack[wind_index].alias;
return NULL;
}
static void delete_all_var_alias (char *name)
{
Alias *item;
int i;
int count = 0;
upper(name);
while ((item = (Alias *) remove_all_from_array((Array *)&var_alias, name)))
{
for (i = 0; i < ALIAS_CACHE_SIZE; i++)
{
if (var_alias.cache[i] == item)
var_alias.cache[i] = NULL;
}
new_free(&(item->name));
new_free(&(item->stuff));
new_free(&(item->stub));
new_free((char **)&item);
count++;
}
}
void delete_var_alias (char *name, int owd)
{
Alias *item;
int i;
upper(name);
if ((item = (Alias *)remove_from_array ((Array *)&var_alias, name)))
{
for (i = 0; i < var_alias.cache_size; i++)
{
if (var_alias.cache[i] == item)
var_alias.cache[i] = NULL;
}
new_free(&(item->name));
new_free(&(item->stuff));
new_free(&(item->stub));
new_free((char **)&item);
if (owd)
say("Assign %s removed", name);
}
else if (owd)
say("No such assign: %s", name);
}
static void delete_cmd_alias (char *name, int owd)
{
Alias *item;
int i;
upper(name);
if ((item = (Alias *)remove_from_array ((Array *)&cmd_alias, name)))
{
for (i = 0; i < cmd_alias.cache_size; i++)
{
if (cmd_alias.cache[i] == item)
cmd_alias.cache[i] = NULL;
}
new_free(&(item->name));
new_free(&(item->stuff));
new_free(&(item->stub));
destroy_arglist(item->arglist);
new_free((char **)&item);
if (owd)
say("Alias %s removed", name);
}
else if (owd)
say("No such alias: %s", name);
}
static void list_local_alias (char *name)
{
int len = 0, cnt;
int DotLoc, LastDotLoc = 0;
char *LastStructName = NULL;
char *s;
say("Visible Local Assigns:");
if (name)
{
upper(name);
len = strlen(name);
}
for (cnt = wind_index; cnt >= 0; cnt = call_stack[cnt].parent)
{
int x;
if (!call_stack[cnt].alias.list)
continue;
for (x = 0; x < call_stack[cnt].alias.max; x++)
{
if (!name || !strncmp(call_stack[cnt].alias.list[x]->name, name, len))
{
if ((s = strchr(call_stack[cnt].alias.list[x]->name + len, '.')))
{
DotLoc = s - call_stack[cnt].alias.list[x]->name;
if (!LastStructName || (DotLoc != LastDotLoc) || strncmp(call_stack[cnt].alias.list[x]->name, LastStructName, DotLoc))
{
put_it("\t%*.*s\t<Structure>", DotLoc, DotLoc, call_stack[cnt].alias.list[x]->name);
LastStructName = call_stack[cnt].alias.list[x]->name;
LastDotLoc = DotLoc;
}
}
else
{
if (call_stack[cnt].alias.list[x]->stub)
put_it("\t%s STUBBED TO %s", call_stack[cnt].alias.list[x]->name, call_stack[cnt].alias.list[x]->stub);
else
put_it("\t%s\t%s", call_stack[cnt].alias.list[x]->name, call_stack[cnt].alias.list[x]->stuff);
}
}
}
}
}
/*
* This function is strictly O(N). Its possible to address this.
*/
static void list_var_alias (char *name)
{
int len = 0;
int DotLoc,
LastDotLoc = 0;
char *LastStructName = NULL;
int cnt;
char *s;
say("Assigns:");
if (name)
{
upper(name);
len = strlen(name);
}
for (cnt = 0; cnt < var_alias.max; cnt++)
{
if (!name || !strncmp(var_alias.list[cnt]->name, name, len))
{
if ((s = strchr(var_alias.list[cnt]->name + len, '.')))
{
DotLoc = s - var_alias.list[cnt]->name;
if (!LastStructName || (DotLoc != LastDotLoc) || strncmp(var_alias.list[cnt]->name, LastStructName, DotLoc))
{
put_it("\t%*.*s\t<Structure>", DotLoc, DotLoc, var_alias.list[cnt]->name);
LastStructName = var_alias.list[cnt]->name;
LastDotLoc = DotLoc;
}
}
else
{
if (var_alias.list[cnt]->stub)
put_it("\t%s STUBBED TO %s", var_alias.list[cnt]->name, var_alias.list[cnt]->stub);
else
put_it("\t%s\t%s", var_alias.list[cnt]->name, var_alias.list[cnt]->stuff);
}
}
}
}
/*
* This function is strictly O(N). Its possible to address this.
*/
static void list_cmd_alias (char *name)
{
int len = 0;
int DotLoc,
LastDotLoc = 0;
char *LastStructName = NULL;
int cnt;
char *s;
say("Aliases:");
if (name)
{
upper(name);
len = strlen(name);
}
for (cnt = 0; cnt < cmd_alias.max; cnt++)
{
if (!name || !strncmp(cmd_alias.list[cnt]->name, name, len))
{
if ((s = strchr(cmd_alias.list[cnt]->name + len, '.')))
{
DotLoc = s - cmd_alias.list[cnt]->name;
if (!LastStructName || (DotLoc != LastDotLoc) || strncmp(cmd_alias.list[cnt]->name, LastStructName, DotLoc))
{
put_it("\t%*.*s\t<Structure>", DotLoc, DotLoc, cmd_alias.list[cnt]->name);
LastStructName = cmd_alias.list[cnt]->name;
LastDotLoc = DotLoc;
}
}
else
{
if (cmd_alias.list[cnt]->stub)
put_it("\t%s STUBBED TO %s", cmd_alias.list[cnt]->name, cmd_alias.list[cnt]->stub);
else
put_it("\t%s\t%s", cmd_alias.list[cnt]->name, cmd_alias.list[cnt]->stuff);
}
}
}
}
/************************* DIRECT VARIABLE EXPANSION ************************/
/*
* get_variable: This simply looks up the given str. It first checks to see
* if its a user variable and returns it if so. If not, it checks to see if
* it's an IRC variable and returns it if so. If not, it checks to see if
* its and environment variable and returns it if so. If not, it returns
* null. It mallocs the returned string
*/
char *get_variable (char *str)
{
int af = 0;
return get_variable_with_args(str, NULL, &af);
}
static char *get_variable_with_args (const char *str, const char *args, int *args_flag)
{
Alias *alias = NULL;
char *ret = NULL;
char *name = NULL;
char *freep = NULL;
int copy = 0;
int local = 0;
freep = name = remove_brackets(str, args, args_flag);
if (*name == ':' && name[1])
{
name++, local = 1;
if (*name == ':')
name++, local = -1;
}
/*
* local == -1 means "local variables not allowed"
* local == 0 means "locals first, then globals"
* local == 1 means "global variables not allowed"
*/
if ((local != -1) && (alias = find_local_alias(name, NULL)))
copy = 1, ret = alias->stuff;
else if (local == 1)
;
else if ((alias = find_var_alias(name)) != NULL)
copy = 1, ret = alias->stuff;
else if ((strlen(str) == 1) && (ret = built_in_alias(*str, NULL)))
;
else if ((ret = make_string_var(str)))
;
else if ((ret = make_fstring_var(str)))
;
else
copy = 1, ret = getenv(str);
if (x_debug & DEBUG_UNKNOWN && ret == NULL)
debugyell("Variable lookup to non-existant assign [%s]", name);
if ((internal_debug & DEBUG_VARIABLE) && alias_debug && !in_debug_yell)
debugyell("%3d \t@%s == %s", debug_count++, str, ret ? ret : empty_string);
new_free(&freep);
return (copy ? m_strdup(ret) : ret);
}
void debug_alias(char *name, int x)
{
Alias *item;
int cnt;
if (name && *name)
{
if ((item = find_cmd_alias(name, &cnt)) && cnt < 0)
item->debug = DEBUG_CMDALIAS;
}
}
char * get_cmd_alias (char *name, int *howmany, char **complete_name, void **args)
{
Alias *item;
if ((item = find_cmd_alias(name, howmany)))
{
alias_debug += (item->debug ? 1 : 0);
if (complete_name)
malloc_strcpy(complete_name, item->name);
if (args)
*args = (void *)item->arglist;
return item->stuff;
}
return NULL;
}
/*
* This function is strictly O(N). This should probably be addressed.
*/
char ** glob_cmd_alias (char *name, int *howmany)
{
int cnt;
int cmp;
int len;
char **matches = NULL;
int matches_size = 5;
len = strlen(name);
*howmany = 0;
matches = RESIZE(matches, char *, matches_size);
for (cnt = 0; cnt < cmd_alias.max; cnt++)
{
if (!(cmp = strncmp(name, cmd_alias.list[cnt]->name, len)))
{
if (strchr(cmd_alias.list[cnt]->name + len, '.'))
continue;
matches[*howmany] = m_strdup(cmd_alias.list[cnt]->name);
*howmany += 1;
if (*howmany == matches_size)
{
matches_size += 5;
RESIZE(matches, char *, matches_size);
}
}
else if (cmp < 0)
break;
}
if (*howmany)
matches[*howmany] = NULL;
else
new_free((char **)&matches);
return matches;
}
/*
* This function is strictly O(N). This should probably be addressed.
*/
char ** glob_assign_alias (char *name, int *howmany)
{
int cnt;
int cmp;
int len;
char **matches = NULL;
int matches_size = 5;
len = strlen(name);
*howmany = 0;
matches = RESIZE(matches, char *, matches_size);
for (cnt = 0; cnt < var_alias.max; cnt++)
{
if (!(cmp = strncmp(name, var_alias.list[cnt]->name, len)))
{
if (strchr(var_alias.list[cnt]->name + len, '.'))
continue;
matches[*howmany] = m_strdup(var_alias.list[cnt]->name);
*howmany += 1;
if (*howmany == matches_size)
{
matches_size += 5;
RESIZE(matches, char *, matches_size);
}
}
else if (cmp < 0)
break;
}
if (*howmany)
matches[*howmany] = NULL;
else
new_free((char **)&matches);
return matches;
}
/*
* This function is strictly O(N). This should probably be addressed.
*/
char ** pmatch_cmd_alias (char *name, int *howmany)
{
int cnt;
int len;
char **matches = NULL;
int matches_size = 5;
len = strlen(name);
*howmany = 0;
matches = RESIZE(matches, char *, matches_size);
for (cnt = 0; cnt < cmd_alias.max; cnt++)
{
if (wild_match(name, cmd_alias.list[cnt]->name))
{
matches[*howmany] = m_strdup(cmd_alias.list[cnt]->name);
*howmany += 1;
if (*howmany == matches_size)
{
matches_size += 5;
RESIZE(matches, char *, matches_size);
}
}
}
if (*howmany)
matches[*howmany] = NULL;
else
new_free((char **)&matches);
return matches;
}
/*
* This function is strictly O(N). This should probably be addressed.
*/
char ** pmatch_assign_alias (char *name, int *howmany)
{
int cnt;
int len;
char **matches = NULL;
int matches_size = 5;
len = strlen(name);
*howmany = 0;
matches = RESIZE(matches, char *, matches_size);
for (cnt = 0; cnt < var_alias.max; cnt++)
{
if (wild_match(name, var_alias.list[cnt]->name))
{
matches[*howmany] = m_strdup(var_alias.list[cnt]->name);
*howmany += 1;
if (*howmany == matches_size)
{
matches_size += 5;
RESIZE(matches, char *, matches_size);
}
}
}
if (*howmany)
matches[*howmany] = NULL;
else
new_free((char **)&matches);
return matches;
}
/*
* This function is strictly O(N). This should probably be addressed.
*/
char ** get_subarray_elements (char *root, int *howmany, int type)
{
AliasSet *as; /* XXXX */
register int len, len2;
register int cnt;
int cmp = 0;
char **matches = NULL;
int matches_size = 5;
size_t end;
char *last = NULL;
if (type == COMMAND_ALIAS)
as = &cmd_alias;
else
as = &var_alias;
len = strlen(root);
*howmany = 0;
matches = RESIZE(matches, char *, matches_size);
for (cnt = 0; cnt < as->max; cnt++)
{
len2 = strlen(as->list[cnt]->name);
if ( (len < len2) &&
((cmp = streq(root, as->list[cnt]->name)) == len))
{
if (as->list[cnt]->name[cmp] == '.')
{
end = strcspn(as->list[cnt]->name + cmp + 1, ".");
if (last && !my_strnicmp(as->list[cnt]->name, last, cmp + 1 + end))
continue;
matches[*howmany] = m_strndup(as->list[cnt]->name, cmp + 1 + end);
last = matches[*howmany];
*howmany += 1;
if (*howmany == matches_size)
{
matches_size += 5;
RESIZE(matches, char *, matches_size);
}
}
}
}
if (*howmany)
matches[*howmany] = NULL;
else
new_free((char **)&matches);
return matches;
}
char * parse_line_alias_special (char *name, char *what, char *args, int d1, int d2, void *arglist, int function)
{
int old_window_display = window_display;
int old_last_function_call_level = last_function_call_level;
char *result = NULL;
window_display = 0;
make_local_stack(name);
prepare_alias_call(arglist, &args);
if (function)
{
last_function_call_level = wind_index;
add_local_alias("FUNCTION_RETURN", empty_string);
}
window_display = old_window_display;
will_catch_return_exceptions++;
parse_line(NULL, what, args, d1, d2, 1);
will_catch_return_exceptions--;
return_exception = 0;
if (function)
{
result = get_variable("FUNCTION_RETURN");
last_function_call_level = old_last_function_call_level;
}
destroy_local_stack();
return result;
}
char * parse_line_with_return (char *name, char *what, char *args, int d1, int d2)
{
return parse_line_alias_special(name, what, args, d1, d2, NULL, 1);
}
/************************************************************************/
/*
* call_user_function: Executes a user alias (by way of parse_command.
* The actual function ends up being routed through execute_alias (below)
* and we just keep track of the retval and stuff. I dont know that anyone
* depends on command completion with functions, so we can save a lot of
* CPU time by just calling execute_alias() directly.
*/
char *call_user_function (char *alias_name, char *args)
{
char *result = NULL;
char *sub_buffer;
int cnt;
void *arglist = NULL;
sub_buffer = get_cmd_alias(alias_name, &cnt, NULL, &arglist);
if (cnt < 0)
result = parse_line_alias_special(alias_name, sub_buffer, args, 0, 1, arglist, 1);
else if (x_debug & DEBUG_UNKNOWN)
debugyell("Function call to non-existant alias [%s]", alias_name);
if (!result)
result = m_strdup(empty_string);
return result;
}
/* XXX Ugh. */
void call_user_alias (char *alias_name, char *alias_stuff, char *args, void *arglist)
{
parse_line_alias_special(alias_name, alias_stuff, args, 0, 1, arglist, 0);
}
/*
* save_aliases: This will write all of the aliases to the FILE pointer fp in
* such a way that they can be read back in using LOAD or the -l switch
*/
void save_assigns (FILE *fp, int do_all)
{
int cnt = 0;
for (cnt = 0; cnt < var_alias.max; cnt++)
{
if (!var_alias.list[cnt]->global || do_all)
{
if (var_alias.list[cnt]->stub)
fprintf(fp, "STUB ");
fprintf(fp, "ASSIGN %s %s\n", var_alias.list[cnt]->name, var_alias.list[cnt]->stuff);
}
}
}
void save_aliases (FILE *fp, int do_all)
{
int cnt = 0;
#if 0
for (cnt = 0; cnt < var_alias.max; cnt++)
{
if (!var_alias.list[cnt]->global || do_all)
{
if (var_alias.list[cnt]->stub)
fprintf(fp, "STUB ");
fprintf(fp, "ASSIGN %s %s\n", var_alias.list[cnt]->name, var_alias.list[cnt]->stuff);
}
}
#endif
for (cnt = 0; cnt < cmd_alias.max; cnt++)
{
if (!cmd_alias.list[cnt]->global || do_all)
{
if (cmd_alias.list[cnt]->stub)
fprintf(fp, "STUB ");
fprintf(fp, "ALIAS %s %s\n", cmd_alias.list[cnt]->name, cmd_alias.list[cnt]->stuff);
}
}
}
void destroy_aliases (int type)
{
int cnt = 0;
AliasSet *my_array = NULL;
if (type == COMMAND_ALIAS)
my_array = &cmd_alias;
else if (type == VAR_ALIAS)
my_array = &var_alias;
else if (type == VAR_ALIAS_LOCAL)
my_array = &call_stack[wind_index].alias;
for (cnt = 0; cnt < my_array->max; cnt++)
{
new_free(&(my_array->list[cnt]->stuff));
new_free(&(my_array->list[cnt]->name));
new_free(&(my_array->list[cnt]->stub));
new_free(&(my_array->list[cnt]));
new_free((void **)&(my_array->list[cnt])); /* XXX Hrm. */
}
for (cnt = 0; cnt < my_array->cache_size; cnt++)
my_array->cache[cnt] = NULL;
new_free(&my_array->list);
my_array->max = my_array->max_alloc = 0;
}
/******************* RUNTIME STACK SUPPORT **********************************/
void BX_make_local_stack (char *name)
{
wind_index++;
if (wind_index >= max_wind)
{
int tmp_wind = wind_index;
if (max_wind == -1)
max_wind = 8;
else
max_wind <<= 1;
RESIZE(call_stack, RuntimeStack, max_wind+1);
for (; wind_index <= max_wind; wind_index++)
{
call_stack[wind_index].alias.max = 0;
call_stack[wind_index].alias.max_alloc = 0;
call_stack[wind_index].alias.list = NULL;
call_stack[wind_index].current = NULL;
call_stack[wind_index].name = NULL;
call_stack[wind_index].alias.func = strncmp;
call_stack[wind_index].parent = -1;
call_stack[wind_index].alias.cache = NULL;
call_stack[wind_index].alias.cache_size = 0;
call_stack[wind_index].alias.revoke_index = 0;
}
wind_index = tmp_wind;
}
/* Just in case... */
destroy_local_stack();
wind_index++; /* XXXX - chicanery */
if (name)
{
call_stack[wind_index].name = name;
call_stack[wind_index].parent = -1;
}
else
{
call_stack[wind_index].name = empty_string;
call_stack[wind_index].parent = wind_index - 1;
}
call_stack[wind_index].locked = 0;
}
int find_locked_stack_frame (void)
{
int i;
for (i = 0; i < wind_index; i++)
if (call_stack[i].locked)
return i;
return -1;
}
void bless_local_stack (void)
{
call_stack[wind_index].name = empty_string;
call_stack[wind_index].parent = find_locked_stack_frame();
}
char *return_this_alias(void)
{
int ind = wind_index;
if (ind != -1)
{
if (call_stack[ind].name[0])
return call_stack[ind].name;
while (!(call_stack[ind].name[0]) && ind)
ind--;
return call_stack[ind].name;
}
return empty_string;
}
void BX_destroy_local_stack (void)
{
/*
* We clean up as best we can here...
*/
if (call_stack[wind_index].alias.list)
destroy_aliases(VAR_ALIAS_LOCAL);
if (call_stack[wind_index].current)
call_stack[wind_index].current = 0;
if (call_stack[wind_index].name)
call_stack[wind_index].name = 0;
wind_index--;
}
void set_current_command (char *line)
{
call_stack[wind_index].current = line;
}
void unset_current_command (void)
{
call_stack[wind_index].current = NULL;
}
void BX_lock_stack_frame (void)
{
call_stack[wind_index].locked = 1;
}
void BX_unlock_stack_frame (void)
{
int lock = find_locked_stack_frame();
if (lock >= 0)
call_stack[lock].locked = 0;
}
void dump_call_stack (void)
{
int my_wind_index = wind_index;
if (my_wind_index >= 0)
{
say("Call stack");
while (my_wind_index--)
say("[%3d] %s", my_wind_index, call_stack[my_wind_index].current);
say("End of call stack");
}
}
void panic_dump_call_stack (void)
{
int my_wind_index = wind_index;
printf("Call stack\n");
if (wind_index >= 0)
{
while (my_wind_index--)
printf("[%3d] %s\n", my_wind_index, call_stack[my_wind_index].current);
} else
printf("call stack corruption\n");
printf("End of call stack\n");
}
/*
* You may NOT call this unless youre about to exit.
* If you do (call this when youre not about to exit), and you do it
* very often, max_wind will get absurdly large. So dont do it.
*
* XXXX - this doesnt clean up everything -- but do i care?
*/
void destroy_call_stack (void)
{
wind_index = 0;
new_free((char **)&call_stack);
}
#if 0
char *lookup_member(char *varname, char *var_args, char *ptr, char *args)
{
char *structs[] = { "WINDOW", "DCC", "CHANNEL", "NICK", NULL };
int i;
for (i = 0; structs[i]; i++)
if (!my_stricmp(varname, structs[i]))
break;
if (!structs[i])
return NULL;
switch (i)
{
case 0:
case 1:
case 2:
case 3:
default:
break;
}
return NULL;
}
#endif
#include "expr2.c"
#include "expr.c"
/****************************** ALIASCTL ************************************/
#define EMPTY empty_string
#define RETURN_EMPTY return m_strdup(EMPTY)
#define RETURN_IF_EMPTY(x) if (empty( x )) RETURN_EMPTY
#define GET_INT_ARG(x, y) {RETURN_IF_EMPTY(y); x = my_atol(safe_new_next_arg(y, &y));}
#define GET_FLOAT_ARG(x, y) {RETURN_IF_EMPTY(y); x = atof(safe_new_next_arg(y, &y));}
#define GET_STR_ARG(x, y) {RETURN_IF_EMPTY(y); x = new_next_arg(y, &y);RETURN_IF_EMPTY(x);}
#define RETURN_STR(x) return m_strdup(x ? x : EMPTY)
#define RETURN_INT(x) return m_strdup(ltoa(x));
/* Used by function_aliasctl */
/* MUST BE FIXED */
BUILT_IN_FUNCTION(aliasctl)
{
int list = -1;
char *listc;
enum { GET, SET, MATCH, PMATCH } op;
GET_STR_ARG(listc, input);
if (!my_strnicmp(listc, "AS", 2))
list = VAR_ALIAS;
else if (!my_strnicmp(listc, "AL", 2))
list = COMMAND_ALIAS;
else if (!my_strnicmp(listc, "LO", 2))
list = VAR_ALIAS_LOCAL;
else if (!my_strnicmp(listc, "CO", 2))
list = -1;
else
RETURN_EMPTY;
GET_STR_ARG(listc, input);
if (!my_strnicmp(listc, "G", 1))
op = GET;
else if (!my_strnicmp(listc, "S", 1))
op = SET;
else if (!my_strnicmp(listc, "M", 1))
op = MATCH;
else if (!my_strnicmp(listc, "P", 1))
op = PMATCH;
else
RETURN_EMPTY;
if (list == -1 && op != MATCH)
RETURN_EMPTY;
GET_STR_ARG(listc, input);
switch (op)
{
case (GET) :
{
Alias *alias = NULL;
AliasSet *a_list;
int dummy;
upper(listc);
if (list == VAR_ALIAS_LOCAL)
alias = find_local_alias(listc, &a_list);
else if (list == VAR_ALIAS)
alias = find_var_alias(listc);
else
alias = find_cmd_alias(listc, &dummy);
if (alias)
RETURN_STR(alias->stuff);
else
RETURN_EMPTY;
}
case (SET) :
{
upper(listc);
if (list == VAR_ALIAS_LOCAL)
add_local_alias(listc, input);
else if (list == VAR_ALIAS)
add_var_alias(listc, input);
else
add_cmd_alias(listc, NULL, input);
RETURN_INT(1)
}
case (MATCH) :
{
char **mlist = NULL;
char *mylist = NULL;
int num = 0, ctr;
if (!my_stricmp(listc, "*"))
listc = empty_string;
upper(listc);
if (list == COMMAND_ALIAS)
mlist = glob_cmd_alias(listc, &num);
else if (list == VAR_ALIAS)
mlist = glob_assign_alias(listc, &num);
else if (list == -1)
return glob_commands(listc, &num, 0);
for (ctr = 0; ctr < num; ctr++)
{
m_s3cat(&mylist, space, mlist[ctr]);
new_free((char **)&mlist[ctr]);
}
new_free((char **)&mlist);
if (mylist)
return mylist;
RETURN_EMPTY;
}
case (PMATCH) :
{
char ** mlist = NULL;
char * mylist = NULL;
int num = 0,
ctr;
if (list == COMMAND_ALIAS)
mlist = pmatch_cmd_alias(listc, &num);
else if (list == VAR_ALIAS)
mlist = pmatch_assign_alias(listc, &num);
else if (list == -1)
return glob_commands(listc, &num, 1);
for (ctr = 0; ctr < num; ctr++)
{
m_s3cat(&mylist, space, mlist[ctr]);
new_free((char **)&mlist[ctr]);
}
new_free((char **)&mlist);
if (mylist)
return mylist;
RETURN_EMPTY;
}
default :
error("aliasctl: Error");
RETURN_EMPTY;
}
RETURN_EMPTY;
}
/*************************** stacks **************************************/
typedef struct aliasstacklist
{
int which;
char *name;
Alias *list;
struct aliasstacklist *next;
} AliasStack;
static AliasStack * alias_stack = NULL;
static AliasStack * assign_stack = NULL;
void do_stack_alias (int type, char *args, int which)
{
char *name;
AliasStack *aptr, **aptrptr;
Alias *alptr;
int cnt;
int my_which = 0;
if (which == STACK_DO_ALIAS)
{
name = "ALIAS";
aptrptr = &alias_stack;
my_which = COMMAND_ALIAS;
}
else
{
name = "ASSIGN";
aptrptr = &assign_stack;
my_which = VAR_ALIAS;
}
if (!*aptrptr && (type == STACK_POP || type == STACK_LIST))
{
say("%s stack is empty!", name);
return;
}
if (type == STACK_PUSH)
{
if (which == STACK_DO_ALIAS)
{
if ((alptr = find_var_alias(args)))
delete_var_alias(args, window_display);
}
else
{
if ((alptr = find_cmd_alias(args, &cnt)))
delete_cmd_alias(args, window_display);
}
aptr = (AliasStack *)new_malloc(sizeof(AliasStack));
aptr->list = alptr;
aptr->name = m_strdup(args);
aptr->next = aptrptr ? *aptrptr : NULL;
*aptrptr = aptr;
return;
}
if (type == STACK_POP)
{
AliasStack *prev = NULL;
for (aptr = *aptrptr; aptr; prev = aptr, aptr = aptr->next)
{
/* have we found it on the stack? */
if (!my_stricmp(args, aptr->name))
{
/* remove it from the list */
if (prev == NULL)
*aptrptr = aptr->next;
else
prev->next = aptr->next;
/* throw away anything we already have */
delete_cmd_alias(args, window_display);
/* put the new one in. */
if (aptr->list)
{
if (which == STACK_DO_ALIAS)
add_to_array((Array *)&cmd_alias, (Array_item *)(aptr->list));
else
add_to_array((Array *)&var_alias, (Array_item *)(aptr->list));
}
/* free it */
new_free((char **)&aptr->name);
new_free((char **)&aptr);
return;
}
}
say("%s is not on the %s stack!", args, name);
return;
}
if (STACK_LIST == type)
{
AliasStack *tmp;
say("%s STACK LIST", name);
for (tmp = *aptrptr; tmp; tmp = tmp->next)
{
if (!tmp->list)
say("\t%s\t<Placeholder>", tmp->name);
else if (tmp->list->stub)
say("\t%s STUBBED TO %s", tmp->name, tmp->list->stub);
else
say("\t%s\t%s", tmp->name, tmp->list->stuff);
}
return;
}
say("Unknown STACK type ??");
}
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