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-rw-r--r--src/util.c165
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diff --git a/src/util.c b/src/util.c
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+/*
+
+ atarisio - A UNIX backend for an Atari SIO2PC lead.
+
+ Copyright (C) 2004 Ian Cowburn (ianc@noddybox.demon.co.uk)
+
+ 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 2 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ -------------------------------------------------------------------------
+
+ Global utilities and types
+
+*/
+static const char ident[]="$Id$";
+
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <ctype.h>
+#include "util.h"
+
+static const char ident_h[]=ATARISIO_UTIL_H;
+
+#define HEX_DUMP_LINE 16
+
+
+/* ---------------------------------------- INTERFACES
+*/
+void *Malloc(size_t size)
+{
+ void *new=malloc(size);
+
+ if (!new)
+ {
+ fprintf(stderr,"malloc failed for %lu bytes\n",(unsigned long)size);
+ exit(EXIT_FAILURE);
+ }
+
+ return new;
+}
+
+
+void *Realloc(void *p, size_t size)
+{
+ void *new=realloc(p,size);
+
+ if (!new)
+ {
+ fprintf(stderr,"realloc failed for %lu bytes\n",(unsigned long)size);
+ exit(EXIT_FAILURE);
+ }
+
+ return new;
+}
+
+
+char *StrCopy(const char *source)
+{
+ return strcpy(Malloc(strlen(source)+1),source);
+}
+
+
+int YesNo(const char *str, int *flag)
+{
+ if (strcasecmp(str,"on")==0 ||
+ strcasecmp(str,"yes")==0 ||
+ strcasecmp(str,"1")==0)
+ {
+ *flag=1;
+ return 1;
+ }
+
+ if (strcasecmp(str,"off")==0 ||
+ strcasecmp(str,"no")==0 ||
+ strcasecmp(str,"0")==0)
+ {
+ *flag=0;
+ return 1;
+ }
+
+ return 0;
+}
+
+
+void HexDump(const uchar *p, size_t len)
+{
+ char asc[HEX_DUMP_LINE+1];
+ size_t f;
+
+ f=0;
+
+ while(f<len)
+ {
+ if ((f%HEX_DUMP_LINE)==0)
+ printf("%4.4x: ",f);
+
+ printf(" %2.2x",p[f]);
+
+ if (isprint(p[f]))
+ asc[f%HEX_DUMP_LINE]=p[f];
+ else
+ asc[f%HEX_DUMP_LINE]='.';
+
+ asc[(f%HEX_DUMP_LINE)+1]=0;
+
+ f++;
+
+ if ((f%HEX_DUMP_LINE)==0)
+ printf(" %s\n",asc);
+ }
+
+ if (f%HEX_DUMP_LINE)
+ {
+ while(f%HEX_DUMP_LINE)
+ {
+ printf(" ");
+ f++;
+ }
+
+ printf(" %s\n",asc);
+ }
+}
+
+
+int GetInt(const char *p)
+{
+ long l;
+
+ l=strtol(p,NULL,0);
+
+ return l;
+}
+
+
+uchar Checksum(const uchar *p, size_t len)
+{
+ int sum;
+ size_t f;
+
+ sum=0;
+
+ for(f=0;f<len;f++)
+ {
+ sum+=p[f];
+ sum=(sum&0xff)+(sum>>8);
+ }
+
+ return (uchar)(sum&0xff);
+}
+
+
+
+/* END OF FILE */