/*************************************************************************** * file: modify.c Part of DIKUMUD * * Usage: Run-time modification (by users) of game variables * * Copyright (C) 1990, 1991 - see 'license.doc' for complete information. * * * * Copyright (C) 1992, 1993 Michael Chastain, Michael Quan, Mitchell Tse * * Performance optimization and bug fixes by MERC Industries. * * You can use our stuff in any way you like whatsoever so long as this * * copyright notice remains intact. If you like it please drop a line * * to mec@garnet.berkeley.edu. * * * * This is free software and you are benefitting. We hope that you * * share your changes too. What goes around, comes around. * ***************************************************************************/ #include <stdlib.h> #include <signal.h> #include <stdio.h> #include <ctype.h> #include <string.h> #include <time.h> #include "structs.h" #include "mob.h" #include "obj.h" #include "utils.h" #include "interp.h" #include "handler.h" #include "db.h" #define REBOOT_AT 10 /* 0-23, time of optional reboot if -e lib/reboot */ #define TP_MOB 0 #define TP_OBJ 1 #define TP_ERROR 2 void show_string(struct descriptor_data *d, char *input); extern char menu[]; 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 }; char *skill_fields[] = { "learned", "recognize", "\n" }; /* ************************************************************************ * modification of malloc'ed strings * ************************************************************************ */ /* Add user input to the 'current' string (as defined by d->str) */ void string_add(struct descriptor_data *d, char *str) { char *scan; int terminator = 0; /* determine if this is the terminal string, and truncate if so */ for (scan = str; *scan; scan++) if ( ( terminator = (*scan == '@') != 0 ) ) { *scan = '\0'; break; } if (!(*d->str)) { if (strlen(str) > d->max_str) { send_to_char("String too long - Truncated.\n\r", d->character); *(str + d->max_str) = '\0'; terminator = 1; } CREATE(*d->str, char, strlen(str) + 3); strcpy(*d->str, str); } else { if (strlen(str) + strlen(*d->str) > d->max_str) { send_to_char("String too long. Last line skipped.\n\r", d->character); terminator = 1; } else { if (!(*d->str = (char *) realloc(*d->str, strlen(*d->str) + strlen(str) + 3))) { perror("string_add"); exit(1); } strcat(*d->str, str); } } if (terminator) { d->str = 0; if (d->connected == CON_EXDSCR) { write_to_q( menu, &d->output ); d->connected = CON_SELECT_MENU; } } else strcat(*d->str, "\n\r"); } #undef MAX_STR /* interpret an argument for do_string */ void quad_arg(char *arg, int *type, char *name, int *field, char *string) { char buf[MAX_STRING_LENGTH]; /* determine type */ arg = one_argument(arg, buf); if (is_abbrev(buf, "char")) *type = TP_MOB; else if (is_abbrev(buf, "obj")) *type = TP_OBJ; else { *type = TP_ERROR; return; } /* find name */ arg = one_argument(arg, name); /* field name and number */ arg = one_argument(arg, buf); if (!(*field = old_search_block(buf, 0, strlen(buf), string_fields, 0))) return; /* string */ for (; isspace(*arg); arg++); for (; ( *string = *arg ) != '\0' ; arg++, string++) ; return; } /* modification of malloc'ed strings in chars/objects */ void do_string(struct char_data *ch, char *arg, int cmd) { char name[MAX_STRING_LENGTH], string[MAX_STRING_LENGTH]; int field, type; struct char_data *mob; struct obj_data *obj; struct extra_descr_data *ed, *tmp; if (IS_NPC(ch)) return; quad_arg(arg, &type, name, &field, string); if (type == TP_ERROR) { send_to_char( "Syntax:\n\rstring ('obj'|'char') <name> <field> [<string>].\n\r", ch); return; } if (!field) { send_to_char("No field by that name. Try 'help string'.\n\r", ch); return; } if (type == TP_MOB) { /* locate the beast */ if (!(mob = get_char_vis(ch, name))) { send_to_char("I don't know anyone by that name...\n\r", ch); return; } switch(field) { case 1: if (!IS_NPC(mob) && GET_LEVEL(ch) < 34) { send_to_char("You can't change that field for players.", ch); return; } ch->desc->str = &GET_NAME(mob); if (!IS_NPC(mob)) send_to_char( "WARNING: You have changed the name of a player.\n\r", ch); break; case 2: if (!IS_NPC(mob)) { send_to_char( "That field is for monsters only.\n\r", ch); return; } ch->desc->str = &mob->player.short_descr; break; case 3: if (!IS_NPC(mob)) { send_to_char( "That field is for monsters only.\n\r", ch); return; } ch->desc->str = &mob->player.long_descr; break; case 4:ch->desc->str = &mob->player.description; break; case 5: if (IS_NPC(mob)) { send_to_char("Monsters have no titles.\n\r", ch); return; } ch->desc->str = &mob->player.title; break; default: send_to_char( "That field is undefined for monsters.\n\r", ch); return; break; } } else /* type == TP_OBJ */ { /* locate the object */ if (!(obj = get_obj_vis(ch, name))) { send_to_char("Can't find such a thing here..\n\r", ch); return; } switch(field) { case 1: ch->desc->str = &obj->name; break; case 2: ch->desc->str = &obj->short_description; break; case 3: ch->desc->str = &obj->description; break; case 4: if (!*string) { send_to_char("You have to supply a keyword.\n\r", ch); return; } /* try to locate extra description */ for (ed = obj->ex_description; ; ed = ed->next) if (!ed) /* the field was not found. create a new one. */ { CREATE(ed , struct extra_descr_data, 1); ed->next = obj->ex_description; obj->ex_description = ed; CREATE(ed->keyword, char, strlen(string) + 1); strcpy(ed->keyword, string); ed->description = 0; ch->desc->str = &ed->description; send_to_char("New field.\n\r", ch); break; } else if (!str_cmp(ed->keyword, string)) /* the field exists */ { free(ed->description); ed->description = 0; ch->desc->str = &ed->description; send_to_char( "Modifying description.\n\r", ch); break; } ch->desc->max_str = MAX_STRING_LENGTH; /* the stndrd (see below) procedure does not apply here */ return; break; case 6: if (!*string) { send_to_char("You must supply a field name.\n\r", ch); return; } /* try to locate field */ for (ed = obj->ex_description; ; ed = ed->next) if (!ed) { send_to_char("No field with that keyword.\n\r", ch); return; } else if (!str_cmp(ed->keyword, string)) { free(ed->keyword); if (ed->description) free(ed->description); /* delete the entry in the desr list */ if (ed == obj->ex_description) obj->ex_description = ed->next; else { for(tmp = obj->ex_description; tmp->next != ed; tmp = tmp->next); tmp->next = ed->next; } free(ed); send_to_char("Field deleted.\n\r", ch); return; } break; default: send_to_char( "That field is undefined for objects.\n\r", ch); return; break; } } if (*ch->desc->str) { free(*ch->desc->str); } if (*string) /* there was a string in the argument array */ { if (strlen(string) > length[field - 1]) { send_to_char("String too long - truncated.\n\r", ch); *(string + length[field - 1]) = '\0'; } CREATE(*ch->desc->str, char, strlen(string) + 1); strcpy(*ch->desc->str, string); ch->desc->str = 0; send_to_char("Ok.\n\r", ch); } else /* there was no string. enter string mode */ { send_to_char("Enter string. terminate with '@'.\n\r", ch); CREATE(*ch->desc->str, char, length[field - 1]); ch->desc->max_str = length[field - 1]; } } /* db stuff *********************************************** */ /* One_Word is like one_argument, execpt that words in quotes "" are */ /* regarded as ONE word */ char *one_word(char *argument, char *first_arg ) { int found, begin, look_at; found = begin = 0; do { for ( ;isspace(*(argument + begin)); begin++); if (*(argument+begin) == '\"') { /* is it a quote */ begin++; for (look_at=0; (*(argument+begin+look_at) >= ' ') && (*(argument+begin+look_at) != '\"') ; look_at++) *(first_arg + look_at) = LOWER(*(argument + begin + look_at)); if (*(argument+begin+look_at) == '\"') begin++; } else { for (look_at=0; *(argument+begin+look_at) > ' ' ; look_at++) *(first_arg + look_at) = LOWER(*(argument + begin + look_at)); } *(first_arg + look_at) = '\0'; begin += look_at; } while (fill_word(first_arg)); return(argument+begin); } #define MAX_HELP 256 struct help_index_element *build_help_index(FILE *fl, int *num) { int nr = -1, issorted, i; struct help_index_element *list = 0, mem; char buf[81], tmp[81], *scan; long pos; CREATE( list, struct help_index_element, MAX_HELP ); for (;;) { pos = ftell(fl); fgets(buf, 81, fl); *(buf + strlen(buf) - 1) = '\0'; scan = buf; for (;;) { /* extract the keywords */ scan = one_word(scan, tmp); if (!*tmp) break; if ( ++nr >= MAX_HELP ) { perror( "Too many help keywords." ); exit( 1 ); } list[nr].keyword = str_dup(tmp); list[nr].pos = pos; } /* skip the text */ do fgets(buf, 81, fl); while (*buf != '#'); if (*(buf + 1) == '~') break; } /* we might as well sort the stuff */ do { issorted = 1; for (i = 0; i < nr; i++) if (str_cmp(list[i].keyword, list[i + 1].keyword) > 0) { mem = list[i]; list[i] = list[i + 1]; list[i + 1] = mem; issorted = 0; } } while (!issorted); *num = nr; return(list); } void page_string(struct descriptor_data *d, char *str, int keep_internal) { if (!d) return; if (keep_internal) { CREATE(d->showstr_head, char, strlen(str) + 1); strcpy(d->showstr_head, str); d->showstr_point = d->showstr_head; } else d->showstr_point = str; show_string(d, ""); } void show_string(struct descriptor_data *d, char *input) { char buffer[MAX_STRING_LENGTH], buf[MAX_INPUT_LENGTH]; register char *scan, *chk; int lines = 0, toggle = 1; one_argument(input, buf); if (*buf) { if (d->showstr_head) { free(d->showstr_head); d->showstr_head = 0; } d->showstr_point = 0; return; } /* show a chunk */ for (scan = buffer;; scan++, d->showstr_point++) if((((*scan = *d->showstr_point) == '\n') || (*scan == '\r')) && ((toggle = -toggle) < 0)) lines++; else if (!*scan || (lines >= 22)) { *scan = '\0'; write_to_q( buffer, &d->output ); /* see if this is the end (or near the end) of the string */ for (chk = d->showstr_point; isspace(*chk); chk++); if (!*chk) { if (d->showstr_head) { free(d->showstr_head); d->showstr_head = 0; } d->showstr_point = 0; } return; } }