1 | #include <stdio.h> |
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2 | #include <ply.h> |
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3 | #include <stdlib.h> |
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4 | #include <strings.h> |
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5 | |
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6 | #ifdef linux |
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7 | #include <string.h> |
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8 | #endif |
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9 | |
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10 | #define MAX_HEADER_LENGTH 10000 |
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11 | |
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12 | void usage(char *progname); |
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13 | |
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14 | |
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15 | int |
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16 | main(int argc, char **argv) |
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17 | { |
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18 | int nelems; |
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19 | char **elist; |
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20 | int file_type; |
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21 | float version; |
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22 | char header[MAX_HEADER_LENGTH]; |
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23 | PlyFile *ply; |
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24 | char *end; |
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25 | char *progname; |
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26 | char *inName = NULL; |
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27 | FILE *inFile = stdin; |
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28 | |
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29 | progname = argv[0]; |
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30 | argc--; |
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31 | argv++; |
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32 | |
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33 | /* Print usage? */ |
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34 | if (argc > 0 && !strcmp(argv[0], "-h")) { |
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35 | usage(progname); |
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36 | exit(-1); |
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37 | } |
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38 | |
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39 | /* optional input file (if not, read stdin ) */ |
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40 | if (argc > 0 && *argv[0] != '-') { |
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41 | inName = argv[0]; |
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42 | inFile = fopen(inName, "r"); |
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43 | if (inFile == NULL) { |
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44 | fprintf(stderr, "Error: Couldn't open input file %s\n", inName); |
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45 | usage(progname); |
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46 | exit(-1); |
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47 | } |
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48 | argc --; |
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49 | argv ++; |
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50 | } |
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51 | |
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52 | /* Check no extra args */ |
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53 | if (argc > 0) { |
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54 | fprintf(stderr, "Error: Unhandled arg: %s\n", argv[0]); |
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55 | usage(progname); |
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56 | exit(-1); |
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57 | } |
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58 | |
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59 | /* If it's a file, open it twice (first time checks it's a valid |
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60 | * ply file). If it's on stdin, just assume valid ply file, and |
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61 | * get the header in a single pass. |
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62 | */ |
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63 | if (inFile != stdin) { |
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64 | ply = ply_read(inFile, &nelems, &elist); |
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65 | |
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66 | if (!ply) { |
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67 | fprintf(stderr, "Not a Ply file.\n"); |
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68 | exit(1); |
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69 | } |
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70 | |
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71 | ply_close(ply); |
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72 | |
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73 | inFile = fopen(inName, "r"); |
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74 | } |
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75 | |
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76 | fread(header, 1, MAX_HEADER_LENGTH, inFile); |
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77 | header[MAX_HEADER_LENGTH-1] = 0; |
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78 | |
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79 | end = strstr(header, "end_header"); |
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80 | |
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81 | if (end == NULL) { |
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82 | fprintf(stderr, "Did not find end of header within the first "); |
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83 | fprintf(stderr, "%d bytes of the file.\n", MAX_HEADER_LENGTH); |
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84 | exit(1); |
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85 | } |
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86 | |
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87 | *(end+strlen("end_header")+1) = 0; |
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88 | |
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89 | printf("\n%s\n", header); |
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90 | } |
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91 | |
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92 | |
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93 | void |
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94 | usage(char *progname) |
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95 | { |
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96 | fprintf(stderr, "\n"); |
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97 | fprintf(stderr, "Usage: %s [ply-file]\n", progname); |
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98 | fprintf(stderr, " or: %s < ply-file\n", progname); |
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99 | fprintf(stderr, "\n"); |
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100 | fprintf(stderr, " %s prints the header information from a Ply file.\n\n", |
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101 | progname); |
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102 | fprintf(stderr, "Note: When reading on stdin, it makes the assumption\n"); |
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103 | fprintf(stderr, "that it is a valid ply file. If you're not sure,\n"); |
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104 | fprintf(stderr, "pass the filename as an argument.\n"); |
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105 | |
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106 | exit(-1); |
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107 | } |
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108 | |
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