141 lines
3.6 KiB
C
141 lines
3.6 KiB
C
/* ***********************************************************************
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* File: alias.c A utility to CircleMUD *
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* Usage: writing/reading player's aliases. *
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* *
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* Code done by Jeremy Hess and Chad Thompson *
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* Modifed by George Greer for inclusion into CircleMUD bpl15. *
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* *
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* Copyright (C) 1993, 94 by the Trustees of the Johns Hopkins University *
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* CircleMUD is based on DikuMUD, Copyright (C) 1990, 1991. *
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*********************************************************************** */
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#include "conf.h"
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#include "sysdep.h"
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#include "structs.h"
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#include "utils.h"
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#include "interpreter.h"
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#include "db.h"
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void write_aliases(struct char_data *ch);
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void read_aliases(struct char_data *ch);
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void delete_aliases(const char *charname);
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void write_aliases(struct char_data *ch)
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{
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FILE *file;
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char fn[MAX_STRING_LENGTH];
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struct alias_data *temp;
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get_filename(fn, sizeof(fn), ALIAS_FILE, GET_NAME(ch));
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remove(fn);
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if (GET_ALIASES(ch) == NULL)
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return;
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if ((file = fopen(fn, "w")) == NULL) {
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log("SYSERR: Couldn't save aliases for %s in '%s': %s", GET_NAME(ch), fn, strerror(errno));
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/* SYSERR_DESC:
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* This error occurs when the server fails to open the relevant alias
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* file for writing. The text at the end of the error should give a
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* valid reason why.
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*/
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return;
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}
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for (temp = GET_ALIASES(ch); temp; temp = temp->next) {
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int aliaslen = strlen(temp->alias);
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int repllen = strlen(temp->replacement) - 1;
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fprintf(file, "%d\n%s\n" /* Alias */
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"%d\n%s\n" /* Replacement */
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"%d\n", /* Type */
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aliaslen, temp->alias,
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repllen, temp->replacement + 1,
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temp->type);
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}
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fclose(file);
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}
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void read_aliases(struct char_data *ch)
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{
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FILE *file;
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char xbuf[MAX_STRING_LENGTH];
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struct alias_data *t2, *prev = NULL;
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int length;
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get_filename(xbuf, sizeof(xbuf), ALIAS_FILE, GET_NAME(ch));
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if ((file = fopen(xbuf, "r")) == NULL) {
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if (errno != ENOENT) {
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log("SYSERR: Couldn't open alias file '%s' for %s: %s", xbuf, GET_NAME(ch), strerror(errno));
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/* SYSERR_DESC:
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* This error occurs when the server fails to open the relevant alias
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* file for reading. The text at the end version should give a valid
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* reason why.
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*/
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}
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return;
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}
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CREATE(GET_ALIASES(ch), struct alias_data, 1);
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t2 = GET_ALIASES(ch);
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for (;;) {
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/* Read the aliased command. */
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if (fscanf(file, "%d\n", &length) != 1)
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goto read_alias_error;
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fgets(xbuf, length + 1, file);
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t2->alias = strdup(xbuf);
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/* Build the replacement. */
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if (fscanf(file, "%d\n", &length) != 1)
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goto read_alias_error;
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*xbuf = ' '; /* Doesn't need terminated, fgets() will. */
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fgets(xbuf + 1, length + 1, file);
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t2->replacement = strdup(xbuf);
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/* Figure out the alias type. */
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if (fscanf(file, "%d\n", &length) != 1)
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goto read_alias_error;
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t2->type = length;
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if (feof(file))
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break;
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CREATE(t2->next, struct alias_data, 1);
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prev = t2;
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t2 = t2->next;
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};
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fclose(file);
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return;
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read_alias_error:
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if (t2->alias)
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free(t2->alias);
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free(t2);
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if (prev)
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prev->next = NULL;
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fclose(file);
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}
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void delete_aliases(const char *charname)
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{
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char filename[PATH_MAX];
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if (!get_filename(filename, sizeof(filename), ALIAS_FILE, charname))
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return;
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if (remove(filename) < 0 && errno != ENOENT)
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log("SYSERR: deleting alias file %s: %s", filename, strerror(errno));
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/* SYSERR_DESC:
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* When an alias file cannot be removed, this error will occur,
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* and the reason why will be the tail end of the error.
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*/
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}
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