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/*
* Crossfire -- cooperative multi-player graphical RPG and adventure game
*
* Copyright (c) 1999-2014 Mark Wedel and the Crossfire Development Team
* Copyright (c) 1992 Frank Tore Johansen
*
* Crossfire is free software and comes with ABSOLUTELY NO WARRANTY. You are
* welcome to redistribute it under certain conditions. For details, please
* see COPYING and LICENSE.
*
* The authors can be reached via e-mail at <crossfire@metalforge.org>.
*/
/**
* @file
* Structures and functions used for the @ref page_dialog "dialog system".
*/
#include <stdlib.h>
#include <string.h>
#include "global.h"
#include "define.h"
#include "object.h"
#include "dialog.h"
/**
* Frees obj::dialog_information.
* @param op what to clean for.
*/
void free_dialog_information(object *op) {
struct_dialog_message *current, *next;
struct_dialog_reply *currep, *nextrep;
if (!QUERY_FLAG(op, FLAG_DIALOG_PARSED))
return;
CLEAR_FLAG(op, FLAG_DIALOG_PARSED);
if (!op->dialog_information)
return;
current = op->dialog_information->all_messages;
while (current) {
next = current->next;
free(current->match);
free(current->message);
currep = current->replies;
while (currep) {
nextrep = currep->next;
free(currep->reply);
free(currep->message);
currep = nextrep;
}
free(current);
current = next;
}
currep = op->dialog_information->all_replies;
while (currep) {
nextrep = currep->next;
free(currep->reply);
free(currep->message);
free(currep);
currep = nextrep;
}
free(op->dialog_information);
op->dialog_information = NULL;
}
/**
* Does the text match the expression?
* @param exp expression to try to match.
* @param text what to test.
* @return 1 if match, 0 else.
* @todo better * handling (incorrect now, will match even if trailing chars)
*/
static int matches(const char *exp, const char *text) {
char *pipe, *save, *msg;
int match = 0;
if (exp[0] == '*')
return 1;
msg = strdup(exp);
pipe = strtok_r(msg, "|", &save);
while (pipe) {
if (re_cmp(text, pipe)) {
match = 1;
break;
}
pipe = strtok_r(NULL, "|", &save);
}
free(msg);
return match;
}
/**
* Parse the dialog information for op, and fills in obj::dialog_information.
* Can be called safely multiple times (will just ignore the other calls).
*
* @param op object to parse the obj::msg field.
*/
static void parse_dialog_information(object *op) {
struct_dialog_message *message = NULL, *last = NULL;
struct_dialog_reply *reply = NULL;
char *current, *save, *msg, *cp;
int len;
/* Used for constructing message with */
char *tmp = NULL;
size_t tmplen = 0;
if (QUERY_FLAG(op, FLAG_DIALOG_PARSED))
return;
SET_FLAG(op, FLAG_DIALOG_PARSED);
op->dialog_information = (struct_dialog_information *)calloc(1, sizeof(struct_dialog_information));
if (op->dialog_information == NULL)
fatal(OUT_OF_MEMORY);
if (!op->msg)
return;
msg = strdup(op->msg);
current = strtok_r(msg, "\n", &save);
while (current) {
if (strncmp(current, "@match ", 7) == 0) {
if (message) {
message->message = tmp;
tmp = NULL;
tmplen = 0;
}
message = (struct_dialog_message *)calloc(1, sizeof(struct_dialog_message));
if (last)
last->next = message;
else
op->dialog_information->all_messages = message;
last = message;
message->match = strdup(current+7);
} else if ((strncmp(current, "@reply ", 7) == 0 && (len = 7)) || (strncmp(current, "@question ", 10) == 0 && (len = 10))) {
if (message) {
reply = (struct_dialog_reply *)calloc(1, sizeof(struct_dialog_reply));
reply->type = (len == 7 ? rt_reply : rt_question);
cp = strchr(current+len, ' ');
if (cp) {
*cp = '\0';
reply->reply = strdup(current+len);
reply->message = strdup(cp+1);
} else {
reply->reply = strdup(current+len);
reply->message = strdup(reply->reply);
LOG(llevDebug, "Warning: @reply/@question without message for %s!\n", op->name);
}
reply->next = message->replies;
message->replies = reply;
reply = (struct_dialog_reply *)calloc(1, sizeof(struct_dialog_reply));
reply->reply = strdup(message->replies->reply);
reply->message = strdup(message->replies->message);
reply->type = message->replies->type;
reply->next = op->dialog_information->all_replies;
op->dialog_information->all_replies = reply;
} else
LOG(llevDebug, "Warning: @reply not in @match block for %s!\n", op->name);
} else if (message) {
/* Needed to set initial \0 */
int wasnull = FALSE;
tmplen += strlen(current)+2;
if (!tmp)
wasnull = TRUE;
tmp = realloc(tmp, tmplen*sizeof(char));
if (!tmp)
fatal(OUT_OF_MEMORY);
if (wasnull)
tmp[0] = 0;
strncat(tmp, current, tmplen-strlen(tmp)-1);
strncat(tmp, "\n", tmplen-strlen(tmp)-1);
}
current = strtok_r(NULL, "\n", &save);
}
if (message) {
if (!tmp)
message->message = strdup("");
else
message->message = tmp;
tmp = NULL;
tmplen = 0;
}
free(msg);
}
/**
* Tries to find a message matching the said text.
* @param op who is being talked to.
* @param text what is being said.
* @param[out] message what op should say. Won't be NULL if return is 1.
* @param[out] reply text the one talking should say based on the text. Can be NULL.
* @return 0 if no match, 1 if a message did match the text.
* @todo smarter match, try to find exact before joker (*) one.
*/
int get_dialog_message(object *op, const char *text, struct_dialog_message **message, struct_dialog_reply **reply) {
if (!QUERY_FLAG(op, FLAG_DIALOG_PARSED))
parse_dialog_information(op);
for (*message = op->dialog_information->all_messages; *message; *message = (*message)->next) {
if (matches((*message)->match, text)) {
break;
}
}
if (!*message)
return 0;
for (*reply = op->dialog_information->all_replies; *reply; *reply = (*reply)->next) {
if (strcmp((*reply)->reply, text) == 0)
break;
}
return 1;
}
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