Mercurial > hg > early-roguelike
view xrogue/save.c @ 215:1b73a8641b37
rogue4: fix most GCC5 warnings.
Converting all function definitions to ANSI style accounts for most of
the change. This has exposed other problems, such as daemons not
actually being their stated type, that will require more careful
solutions.
author | John "Elwin" Edwards |
---|---|
date | Wed, 27 Jan 2016 19:41:05 -0500 |
parents | a3d90e31a001 |
children | f54901b9c39b |
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/* save.c - save and restore routines XRogue: Expeditions into the Dungeons of Doom Copyright (C) 1991 Robert Pietkivitch All rights reserved. Based on "Advanced Rogue" Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T All rights reserved. Based on "Rogue: Exploring the Dungeons of Doom" Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman All rights reserved. See the file LICENSE.TXT for full copyright and licensing information. */ #include <curses.h> #include <ctype.h> #include <string.h> #include <stdlib.h> #include <sys/types.h> #include <signal.h> #include <fcntl.h> #include <errno.h> #include "rogue.h" #include "mach_dep.h" extern char version[]; extern unsigned char encstr[]; extern int big_endian; int md_unlink(char *file); bool save_game() { register FILE *savef; register int c; char buf[LINELEN]; /* * get file name */ mpos = 0; if (file_name[0] != '\0') { if (use_savedir) msg("Save game? "); else msg("Save file (%s)? ", file_name); do { c = wgetch(cw); if (c == ESC) return(0); } while (c != 'n' && c != 'N' && c != 'y' && c != 'Y'); mpos = 0; if (c == 'y' || c == 'Y') { msg("File name: %s", file_name); goto gotfile; } } else goto gotfile; /* must save to file restored from */ if (use_savedir) { msg(""); return FALSE; } do { msg("File name: "); mpos = 0; buf[0] = '\0'; if (get_str(buf, msgw) == QUIT) { msg(""); return FALSE; } strcpy(file_name, buf); gotfile: if ((savef = fopen(file_name, "wb")) == NULL) { msg(strerror(errno)); if (use_savedir) return FALSE; } } while (savef == NULL); msg(""); /* * write out encrpyted file */ if (save_file(savef) == FALSE) { fclose(savef); msg("Cannot create save file."); md_unlink(file_name); return(FALSE); } fclose(savef); return(TRUE); } /* * automatically save a file. This is used if a HUP signal is recieved */ void auto_save(int sig) { register FILE *savef = NULL; register int i; NOOP(sig); for (i = 0; i < NSIG; i++) signal(i, SIG_IGN); if (file_name[0] != '\0' && pstats.s_hpt > 0 && ((savef = fopen(file_name, "wb")) != NULL)) save_file(savef); fclose(savef); exit_game(EXIT_ENDWIN); } /* * write the saved game on the file */ bool save_file(savef) register FILE *savef; { int slines = LINES; int scols = COLS; int ret = FALSE; int endian = 0x01020304; big_endian = ( *((char *)&endian) == 0x01 ); wmove(cw, LINES-1, 0); draw(cw); encwrite(version,strlen(version)+1,savef); rs_write_int(savef,slines); rs_write_int(savef,scols); ret = rs_save_file(savef); return(ret); } restore(file, envp) register char *file; char **envp; { register int inf; extern char **environ; char buf[LINELEN]; int endian = 0x01020304; big_endian = ( *((char *)&endian) == 0x01 ); if (strcmp(file, "-r") == 0) file = file_name; if ((inf = open(file, O_RDONLY)) < 0) { if (use_savedir && errno == ENOENT) { /* No game in progress, so one will be started. */ return TRUE; } perror(file); return FALSE; } fflush(stdout); encread(buf, strlen(version) + 1, inf); if (strcmp(buf, version) != 0) { printf("Sorry, saved game is out of date.\n"); return FALSE; } fflush(stdout); rs_read_int(inf,&lines); rs_read_int(inf,&cols); initscr(); if (lines > LINES) { endwin(); printf("Sorry, original game was played on a screen with %d lines.\n",lines); printf("Current screen only has %d lines. Unable to restore game\n",LINES); return(FALSE); } if (cols > COLS) { endwin(); printf("Sorry, original game was played on a screen with %d columns.\n",cols); printf("Current screen only has %d columns. Unable to restore game\n",COLS); return(FALSE); } typeahead(-1); setup(); cw = newwin(LINES, COLS, 0, 0); mw = newwin(LINES, COLS, 0, 0); hw = newwin(LINES, COLS, 0, 0); msgw = newwin(4, cols, 0, 0); keypad(cw, TRUE); keypad(hw, TRUE); if (rs_restore_file(inf) == FALSE) { endwin(); printf("Cannot restore file\n"); close(inf); return(FALSE); } close(inf); if (!wizard) md_unlink(file); mpos = 0; environ = envp; strcpy(file_name, file); clearok(curscr, TRUE); touchwin(cw); wrefresh(cw); msg("Welcome back! --More-- "); wait_for(' '); msg(""); playit(); /*NOTREACHED*/ return FALSE; } #define ENCWBSIZ 1024 /* * perform an encrypted write */ long encwrite(start, size, outf) register char *start; register unsigned long size; register FILE *outf; { register unsigned char *ep; register int i = 0; unsigned long num_written = 0; char buf[ENCWBSIZ]; int ret; ep = encstr; while (size--) { buf[i++] = *start++ ^ *ep++; if (*ep == '\0') ep = encstr; if (i == ENCWBSIZ || size == 0) { ret = (unsigned int) fwrite(buf, 1, i, outf); if (ret > 0) num_written += ret; if (ret < i) return(num_written); i = 0; } } return(num_written); } #define ENCRBSIZ 32768 /* * perform an encrypted read */ long encread(start, size, inf) register char *start; register unsigned long size; int inf; { register unsigned char *ep; register int rd_siz; register unsigned long total_read; total_read = 0; while (total_read < size) { rd_siz = ENCRBSIZ; rd_siz = ((size-total_read) > ENCRBSIZ) ? ENCRBSIZ : (size-total_read); rd_siz = read(inf,&start[total_read],rd_siz); if(rd_siz==-1 || rd_siz==0) break; total_read += rd_siz; } ep = encstr; size = total_read; while (size--) { *start++ ^= *ep++; if (*ep == '\0') ep = encstr; } return total_read; }