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1 | /* |
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2 | * Implementation of things missing in Windows |
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3 | */ |
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4 | |
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5 | #ifndef M_PI |
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6 | #define M_PI 3.14159265358979323846 |
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7 | #endif |
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8 | |
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9 | #undef ntohs |
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10 | #undef ntohl |
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11 | #undef htonl |
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12 | |
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13 | #ifdef WINDOWS_FUNCTIONS |
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14 | /* byte order */ |
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15 | |
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16 | static unsigned short StoM(unsigned short inv) { |
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17 | union iconv { |
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18 | unsigned short ui; |
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19 | unsigned char uc[2]; |
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20 | } *inp, outv; |
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21 | |
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22 | inp = (union iconv *)&inv; |
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23 | |
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24 | outv.uc[0] = inp->uc[1]; |
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25 | outv.uc[1] = inp->uc[0]; |
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26 | |
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27 | return (outv.ui); |
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28 | } |
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29 | |
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30 | static unsigned int ItoM(unsigned int inv) { |
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31 | union iconv { |
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32 | unsigned int ui; |
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33 | unsigned char uc[4]; |
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34 | } *inp, outv; |
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35 | |
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36 | inp = (union iconv *)&inv; |
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37 | |
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38 | outv.uc[0] = inp->uc[3]; |
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39 | outv.uc[1] = inp->uc[2]; |
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40 | outv.uc[2] = inp->uc[1]; |
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41 | outv.uc[3] = inp->uc[0]; |
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42 | |
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43 | return (outv.ui); |
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44 | } |
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45 | |
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46 | unsigned short ntohs(unsigned short inv) { return StoM(inv); } |
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47 | unsigned long ntohl(unsigned long inv) { return ItoM(inv); } |
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48 | unsigned long htonl(unsigned long inv) { return ItoM(inv); } |
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49 | |
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50 | char *optarg; |
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51 | int optind=1; |
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52 | |
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53 | char getopt(int argc, char **argv, char *args) { |
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54 | int n,nlen=strlen(args),nLen=0; |
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55 | char nCmd; |
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56 | |
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57 | if (argv[optind] && *argv[optind]=='-') { |
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58 | nCmd=*((argv[optind]+1)); |
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59 | |
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60 | for (n=0;n<nlen;n++) { |
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61 | if (args[n] == ':') continue; |
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62 | if (args[n] == nCmd) { |
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63 | if (args[n+1]==':') { |
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64 | char retVal; |
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65 | retVal=*(argv[optind]+1); |
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66 | optarg=argv[optind+1]; |
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67 | if (!optarg) optarg=""; |
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68 | optind+=2; |
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69 | return retVal; |
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70 | } else { |
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71 | char retVal; |
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72 | retVal=*(argv[optind]+1); |
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73 | optarg=NULL; |
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74 | optind+=1; |
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75 | return retVal; |
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76 | } |
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77 | } |
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78 | } |
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79 | } |
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80 | return -1; |
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81 | } |
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82 | |
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83 | #else |
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84 | |
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85 | unsigned short ntohs(unsigned short inv); |
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86 | unsigned long ntohl(unsigned long inv); |
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87 | unsigned long htonl(unsigned long inv); |
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88 | |
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89 | extern char *optarg; |
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90 | extern int optind; |
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91 | |
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92 | char getopt(int argc, char **argv, char *args); |
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93 | #endif |
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