94 lines
1.7 KiB
C
94 lines
1.7 KiB
C
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/*
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* Implementation of things missing in Windows
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*/
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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#undef ntohs
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#undef ntohl
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#undef htonl
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#ifdef WINDOWS_FUNCTIONS
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/* byte order */
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static unsigned short StoM(unsigned short inv) {
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union iconv {
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unsigned short ui;
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unsigned char uc[2];
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} *inp, outv;
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inp = (union iconv *)&inv;
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outv.uc[0] = inp->uc[1];
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outv.uc[1] = inp->uc[0];
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return (outv.ui);
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}
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static unsigned int ItoM(unsigned int inv) {
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union iconv {
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unsigned int ui;
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unsigned char uc[4];
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} *inp, outv;
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inp = (union iconv *)&inv;
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outv.uc[0] = inp->uc[3];
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outv.uc[1] = inp->uc[2];
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outv.uc[2] = inp->uc[1];
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outv.uc[3] = inp->uc[0];
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return (outv.ui);
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}
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unsigned short ntohs(unsigned short inv) { return StoM(inv); }
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unsigned long ntohl(unsigned long inv) { return ItoM(inv); }
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unsigned long htonl(unsigned long inv) { return ItoM(inv); }
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char *optarg;
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int optind=1;
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char getopt(int argc, char **argv, char *args) {
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int n,nlen=strlen(args),nLen=0;
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char nCmd;
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if (argv[optind] && *argv[optind]=='-') {
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nCmd=*((argv[optind]+1));
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for (n=0;n<nlen;n++) {
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if (args[n] == ':') continue;
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if (args[n] == nCmd) {
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if (args[n+1]==':') {
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char retVal;
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retVal=*(argv[optind]+1);
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optarg=argv[optind+1];
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if (!optarg) optarg="";
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optind+=2;
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return retVal;
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} else {
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char retVal;
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retVal=*(argv[optind]+1);
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optarg=NULL;
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optind+=1;
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return retVal;
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}
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}
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}
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}
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return -1;
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}
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#else
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unsigned short ntohs(unsigned short inv);
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unsigned long ntohl(unsigned long inv);
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unsigned long htonl(unsigned long inv);
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extern char *optarg;
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extern int optind;
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char getopt(int argc, char **argv, char *args);
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#endif
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