| /* common.c - Common functions |
| |
| Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> |
| Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| On Debian systems, the complete text of the GNU General Public License |
| can be found in /usr/share/common-licenses/GPL-3 file. |
| */ |
| |
| /* FAT32, VFAT, Atari format support, and various fixes additions May 1998 |
| * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ |
| |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdarg.h> |
| #include <errno.h> |
| |
| #include "common.h" |
| |
| |
| typedef struct _link { |
| void *data; |
| struct _link *next; |
| } LINK; |
| |
| |
| void die(char *msg,...) |
| { |
| va_list args; |
| |
| va_start(args,msg); |
| vfprintf(stderr,msg,args); |
| va_end(args); |
| fprintf(stderr,"\n"); |
| exit(1); |
| } |
| |
| |
| void pdie(char *msg,...) |
| { |
| va_list args; |
| |
| va_start(args,msg); |
| vfprintf(stderr,msg,args); |
| va_end(args); |
| fprintf(stderr,":%s\n",strerror(errno)); |
| exit(1); |
| } |
| |
| |
| void *alloc(int size) |
| { |
| void *this; |
| |
| if ((this = malloc(size))) return this; |
| pdie("malloc"); |
| return NULL; /* for GCC */ |
| } |
| |
| |
| void *qalloc(void **root,int size) |
| { |
| LINK *link; |
| |
| link = alloc(sizeof(LINK)); |
| link->next = *root; |
| *root = link; |
| return link->data = alloc(size); |
| } |
| |
| |
| void qfree(void **root) |
| { |
| LINK *this; |
| |
| while (*root) { |
| this = (LINK *) *root; |
| *root = this->next; |
| free(this->data); |
| free(this); |
| } |
| } |
| |
| |
| int min(int a,int b) |
| { |
| return a < b ? a : b; |
| } |
| |
| |
| char get_key(char *valid,char *prompt) |
| { |
| int ch,okay; |
| |
| while (1) { |
| if (prompt) printf("%s ",prompt); |
| fflush(stdout); |
| while (ch = getchar(), ch == ' ' || ch == '\t'); |
| if (ch == EOF) exit(1); |
| if (!strchr(valid,okay = ch)) okay = 0; |
| while (ch = getchar(), ch != '\n' && ch != EOF); |
| if (ch == EOF) exit(1); |
| if (okay) return okay; |
| printf("Invalid input.\n"); |
| } |
| } |
| |
| /* Local Variables: */ |
| /* tab-width: 8 */ |
| /* End: */ |