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wmud/old-codebase/src/modify.c

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/* ************************************************************************
* File: modify.c Part of CircleMUD *
* Usage: Run-time modification of game variables *
* *
* All rights reserved. See license.doc for complete information. *
* *
* Copyright (C) 1993, 94 by the Trustees of the Johns Hopkins University *
* CircleMUD is based on DikuMUD, Copyright (C) 1990, 1991. *
************************************************************************ */
#include "conf.h"
#include "sysdep.h"
#include "structs.h"
#include "utils.h"
#include "interpreter.h"
#include "handler.h"
#include "db.h"
#include "comm.h"
#include "spells.h"
#include "mail.h"
#include "boards.h"
void show_string(struct descriptor_data *d, char *input);
extern struct spell_info_type spell_info[];
extern const char *MENU;
extern const char *unused_spellname; /* spell_parser.c */
/* local functions */
void smash_tilde(char *str);
ACMD(do_skillset);
char *next_page(char *str);
int count_pages(char *str);
void paginate_string(char *str, struct descriptor_data *d);
const char *string_fields[] =
{
"name",
"short",
"long",
"description",
"title",
"delete-description",
"\n"
};
/* maximum length for text field x+1 */
int length[] =
{
15,
60,
256,
240,
60
};
/* ************************************************************************
* modification of malloc'ed strings *
************************************************************************ */
/*
* Put '#if 1' here to erase ~, or roll your own method. A common idea
* is smash/show tilde to convert the tilde to another innocuous character
* to save and then back to display it. Whatever you do, at least keep the
* function around because other MUD packages use it, like mudFTP.
* -gg 9/9/98
*/
void smash_tilde(char *str)
{
#if 0
/*
* Erase any ~'s inserted by people in the editor. This prevents anyone
* using online creation from causing parse errors in the world files.
* Derived from an idea by Sammy <samedi@dhc.net> (who happens to like
* his tildes thank you very much.), -gg 2/20/98
*/
while ((str = strchr(str, '~')) != NULL)
*str = ' ';
#endif
}
/*
* Basic API function to start writing somewhere.
*
* 'data' isn't used in stock CircleMUD but you can use it to pass whatever
* else you may want through it. The improved editor patch when updated
* could use it to pass the old text buffer, for instance.
*/
void string_write(struct descriptor_data *d, char **writeto, size_t len, long mailto, void *data)
{
if (d->character && !IS_NPC(d->character))
SET_BIT(PLR_FLAGS(d->character), PLR_WRITING);
if (data)
mudlog(BRF, LVL_IMMORT, TRUE, "SYSERR: string_write: I don't understand special data.");
d->str = writeto;
d->max_str = len;
d->mail_to = mailto;
}
/* Add user input to the 'current' string (as defined by d->str) */
void string_add(struct descriptor_data *d, char *str)
{
int terminator;
/* determine if this is the terminal string, and truncate if so */
/* changed to only accept '@' at the beginning of line - J. Elson 1/17/94 */
delete_doubledollar(str);
if ((terminator = (*str == '@')))
*str = '\0';
smash_tilde(str);
if (!(*d->str)) {
if (strlen(str) + 3 > d->max_str) { /* \r\n\0 */
send_to_char(d->character, "String too long - Truncated.\r\n");
strcpy(&str[d->max_str - 3], "\r\n"); /* strcpy: OK (size checked) */
CREATE(*d->str, char, d->max_str);
strcpy(*d->str, str); /* strcpy: OK (size checked) */
terminator = 1;
} else {
CREATE(*d->str, char, strlen(str) + 3);
strcpy(*d->str, str); /* strcpy: OK (size checked) */
}
} else {
if (strlen(str) + strlen(*d->str) + 3 > d->max_str) { /* \r\n\0 */
send_to_char(d->character, "String too long. Last line skipped.\r\n");
terminator = 1;
} else {
RECREATE(*d->str, char, strlen(*d->str) + strlen(str) + 3); /* \r\n\0 */
strcat(*d->str, str); /* strcat: OK (size precalculated) */
}
}
if (terminator) {
if (STATE(d) == CON_PLAYING && (PLR_FLAGGED(d->character, PLR_MAILING))) {
store_mail(d->mail_to, GET_IDNUM(d->character), *d->str);
d->mail_to = 0;
free(*d->str);
free(d->str);
write_to_output(d, "Message sent!\r\n");
if (!IS_NPC(d->character))
REMOVE_BIT(PLR_FLAGS(d->character), PLR_MAILING | PLR_WRITING);
}
d->str = NULL;
if (d->mail_to >= BOARD_MAGIC) {
Board_save_board(d->mail_to - BOARD_MAGIC);
d->mail_to = 0;
}
if (STATE(d) == CON_EXDESC) {
write_to_output(d, "%s", MENU);
STATE(d) = CON_MENU;
}
if (STATE(d) == CON_PLAYING && d->character && !IS_NPC(d->character))
REMOVE_BIT(PLR_FLAGS(d->character), PLR_WRITING);
} else
strcat(*d->str, "\r\n"); /* strcat: OK (size checked) */
}
/* **********************************************************************
* Modification of character skills *
********************************************************************** */
ACMD(do_skillset)
{
struct char_data *vict;
char name[MAX_INPUT_LENGTH];
char buf[MAX_INPUT_LENGTH], help[MAX_STRING_LENGTH];
int skill, value, i, qend;
argument = one_argument(argument, name);
if (!*name) { /* no arguments. print an informative text */
send_to_char(ch, "Syntax: skillset <name> '<skill>' <value>\r\n"
"Skill being one of the following:\r\n");
for (qend = 0, i = 0; i <= TOP_SPELL_DEFINE; i++) {
if (spell_info[i].name == unused_spellname) /* This is valid. */
continue;
send_to_char(ch, "%18s", spell_info[i].name);
if (qend++ % 4 == 3)
send_to_char(ch, "\r\n");
}
if (qend % 4 != 0)
send_to_char(ch, "\r\n");
return;
}
if (!(vict = get_char_vis(ch, name, NULL, FIND_CHAR_WORLD))) {
send_to_char(ch, "%s", NOPERSON);
return;
}
skip_spaces(&argument);
/* If there is no chars in argument */
if (!*argument) {
send_to_char(ch, "Skill name expected.\r\n");
return;
}
if (*argument != '\'') {
send_to_char(ch, "Skill must be enclosed in: ''\r\n");
return;
}
/* Locate the last quote and lowercase the magic words (if any) */
for (qend = 1; argument[qend] && argument[qend] != '\''; qend++)
argument[qend] = LOWER(argument[qend]);
if (argument[qend] != '\'') {
send_to_char(ch, "Skill must be enclosed in: ''\r\n");
return;
}
strcpy(help, (argument + 1)); /* strcpy: OK (MAX_INPUT_LENGTH <= MAX_STRING_LENGTH) */
help[qend - 1] = '\0';
if ((skill = find_skill_num(help)) <= 0) {
send_to_char(ch, "Unrecognized skill.\r\n");
return;
}
argument += qend + 1; /* skip to next parameter */
argument = one_argument(argument, buf);
if (!*buf) {
send_to_char(ch, "Learned value expected.\r\n");
return;
}
value = atoi(buf);
if (value < 0) {
send_to_char(ch, "Minimum value for learned is 0.\r\n");
return;
}
if (value > 100) {
send_to_char(ch, "Max value for learned is 100.\r\n");
return;
}
if (IS_NPC(vict)) {
send_to_char(ch, "You can't set NPC skills.\r\n");
return;
}
/*
* find_skill_num() guarantees a valid spell_info[] index, or -1, and we
* checked for the -1 above so we are safe here.
*/
SET_SKILL(vict, skill, value);
mudlog(BRF, LVL_IMMORT, TRUE, "%s changed %s's %s to %d.", GET_NAME(ch), GET_NAME(vict), spell_info[skill].name, value);
send_to_char(ch, "You change %s's %s to %d.\r\n", GET_NAME(vict), spell_info[skill].name, value);
}
/*********************************************************************
* New Pagination Code
* Michael Buselli submitted the following code for an enhanced pager
* for CircleMUD. All functions below are his. --JE 8 Mar 96
*
*********************************************************************/
/* Traverse down the string until the begining of the next page has been
* reached. Return NULL if this is the last page of the string.
*/
char *next_page(char *str)
{
int col = 1, line = 1, spec_code = FALSE;
for (;; str++) {
/* If end of string, return NULL. */
if (*str == '\0')
return (NULL);
/* If we're at the start of the next page, return this fact. */
else if (line > PAGE_LENGTH)
return (str);
/* Check for the begining of an ANSI color code block. */
else if (*str == '\x1B' && !spec_code)
spec_code = TRUE;
/* Check for the end of an ANSI color code block. */
else if (*str == 'm' && spec_code)
spec_code = FALSE;
/* Check for everything else. */
else if (!spec_code) {
/* Carriage return puts us in column one. */
if (*str == '\r')
col = 1;
/* Newline puts us on the next line. */
else if (*str == '\n')
line++;
/* We need to check here and see if we are over the page width,
* and if so, compensate by going to the begining of the next line.
*/
else if (col++ > PAGE_WIDTH) {
col = 1;
line++;
}
}
}
}
/* Function that returns the number of pages in the string. */
int count_pages(char *str)
{
int pages;
for (pages = 1; (str = next_page(str)); pages++);
return (pages);
}
/* This function assigns all the pointers for showstr_vector for the
* page_string function, after showstr_vector has been allocated and
* showstr_count set.
*/
void paginate_string(char *str, struct descriptor_data *d)
{
int i;
if (d->showstr_count)
*(d->showstr_vector) = str;
for (i = 1; i < d->showstr_count && str; i++)
str = d->showstr_vector[i] = next_page(str);
d->showstr_page = 0;
}
/* The call that gets the paging ball rolling... */
void page_string(struct descriptor_data *d, char *str, int keep_internal)
{
char actbuf[MAX_INPUT_LENGTH] = "";
if (!d)
return;
if (!str || !*str)
return;
d->showstr_count = count_pages(str);
CREATE(d->showstr_vector, char *, d->showstr_count);
if (keep_internal) {
d->showstr_head = strdup(str);
paginate_string(d->showstr_head, d);
} else
paginate_string(str, d);
show_string(d, actbuf);
}
/* The call that displays the next page. */
void show_string(struct descriptor_data *d, char *input)
{
char buffer[MAX_STRING_LENGTH], buf[MAX_INPUT_LENGTH];
int diff;
any_one_arg(input, buf);
/* Q is for quit. :) */
if (LOWER(*buf) == 'q') {
free(d->showstr_vector);
d->showstr_vector = NULL;
d->showstr_count = 0;
if (d->showstr_head) {
free(d->showstr_head);
d->showstr_head = NULL;
}
return;
}
/* R is for refresh, so back up one page internally so we can display
* it again.
*/
else if (LOWER(*buf) == 'r')
d->showstr_page = MAX(0, d->showstr_page - 1);
/* B is for back, so back up two pages internally so we can display the
* correct page here.
*/
else if (LOWER(*buf) == 'b')
d->showstr_page = MAX(0, d->showstr_page - 2);
/* Feature to 'goto' a page. Just type the number of the page and you
* are there!
*/
else if (isdigit(*buf))
d->showstr_page = MAX(0, MIN(atoi(buf) - 1, d->showstr_count - 1));
else if (*buf) {
send_to_char(d->character, "Valid commands while paging are RETURN, Q, R, B, or a numeric value.\r\n");
return;
}
/* If we're displaying the last page, just send it to the character, and
* then free up the space we used.
*/
if (d->showstr_page + 1 >= d->showstr_count) {
send_to_char(d->character, "%s", d->showstr_vector[d->showstr_page]);
free(d->showstr_vector);
d->showstr_vector = NULL;
d->showstr_count = 0;
if (d->showstr_head) {
free(d->showstr_head);
d->showstr_head = NULL;
}
}
/* Or if we have more to show.... */
else {
diff = d->showstr_vector[d->showstr_page + 1] - d->showstr_vector[d->showstr_page];
if (diff > MAX_STRING_LENGTH - 3) /* 3=\r\n\0 */
diff = MAX_STRING_LENGTH - 3;
strncpy(buffer, d->showstr_vector[d->showstr_page], diff); /* strncpy: OK (size truncated above) */
/*
* Fix for prompt overwriting last line in compact mode submitted by
* Peter Ajamian <peter@pajamian.dhs.org> on 04/21/2001
*/
if (buffer[diff - 2] == '\r' && buffer[diff - 1]=='\n')
buffer[diff] = '\0';
else if (buffer[diff - 2] == '\n' && buffer[diff - 1] == '\r')
/* This is backwards. Fix it. */
strcpy(buffer + diff - 2, "\r\n"); /* strcpy: OK (size checked) */
else if (buffer[diff - 1] == '\r' || buffer[diff - 1] == '\n')
/* Just one of \r\n. Overwrite it. */
strcpy(buffer + diff - 1, "\r\n"); /* strcpy: OK (size checked) */
else
/* Tack \r\n onto the end to fix bug with prompt overwriting last line. */
strcpy(buffer + diff, "\r\n"); /* strcpy: OK (size checked) */
send_to_char(d->character, "%s", buffer);
d->showstr_page++;
}
}
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