| 1 | /* An example program that demonstrates libtrace's output functionalities. |
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| 2 | * |
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| 3 | * This libtrace skeleton has the bare minimum required to write a useful |
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| 4 | * libtrace output program, including error handling. |
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| 5 | * |
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| 6 | */ |
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| 7 | #include "libtrace.h" |
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| 8 | #include <stdio.h> |
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| 9 | |
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| 10 | void per_packet(libtrace_packet_t *packet) |
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| 11 | { |
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| 12 | /* Your code goes here */ |
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| 13 | } |
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| 14 | |
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| 15 | int main(int argc, char *argv[]) |
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| 16 | { |
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| 17 | libtrace_t *trace; |
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| 18 | libtrace_out_t *output; |
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| 19 | libtrace_packet_t *packet; |
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| 20 | int compress_level = 6; |
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| 21 | |
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| 22 | if (argc<3) { |
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| 23 | fprintf(stderr,"usage: %s <input uri> <outputuri>\n",argv[0]); |
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| 24 | return 1; |
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| 25 | } |
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| 26 | |
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| 27 | trace = trace_create(argv[1]); |
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| 28 | |
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| 29 | if (trace_is_err(trace)) { |
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| 30 | trace_perror(trace,"Opening input trace"); |
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| 31 | return 1; |
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| 32 | } |
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| 33 | |
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| 34 | if (trace_start(trace)) { |
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| 35 | trace_perror(trace,"Starting input trace"); |
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| 36 | trace_destroy(trace); |
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| 37 | return 1; |
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| 38 | } |
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| 39 | |
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| 40 | /* Creating output trace */ |
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| 41 | output = trace_create_output(argv[2]); |
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| 42 | |
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| 43 | if (trace_is_err_output(output)) { |
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| 44 | trace_perror_output(output, "Opening output trace"); |
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| 45 | return 1; |
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| 46 | } |
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| 47 | |
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| 48 | /* Setting compression level */ |
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| 49 | if (trace_config_output(output, TRACE_OPTION_OUTPUT_COMPRESS, |
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| 50 | &compress_level) == -1) { |
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| 51 | trace_perror_output(output, "Setting compression level"); |
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| 52 | trace_destroy(trace); |
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| 53 | trace_destroy_output(output); |
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| 54 | return 1; |
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| 55 | } |
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| 56 | |
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| 57 | if (trace_start_output(output)) { |
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| 58 | trace_perror_output(output, "Starting output trace"); |
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| 59 | trace_destroy_output(output); |
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| 60 | trace_destroy(trace); |
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| 61 | return 1; |
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| 62 | } |
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| 63 | |
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| 64 | packet = trace_create_packet(); |
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| 65 | |
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| 66 | while (trace_read_packet(trace,packet)>0) { |
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| 67 | /* Perhaps we want to do something to the packet first */ |
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| 68 | per_packet(packet); |
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| 69 | |
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| 70 | /* Write out the packet */ |
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| 71 | if (trace_write_packet(output, packet) < 0) { |
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| 72 | trace_perror_output(output, "Writing packet"); |
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| 73 | trace_destroy(trace); |
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| 74 | trace_destroy_output(output); |
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| 75 | trace_destroy_packet(packet); |
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| 76 | return 1; |
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| 77 | } |
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| 78 | |
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| 79 | } |
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| 80 | |
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| 81 | |
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| 82 | if (trace_is_err(trace)) { |
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| 83 | trace_perror(trace,"Reading packets"); |
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| 84 | trace_destroy(trace); |
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| 85 | trace_destroy_output(output); |
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| 86 | trace_destroy_packet(packet); |
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| 87 | return 1; |
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| 88 | } |
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| 89 | |
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| 90 | trace_destroy(trace); |
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| 91 | trace_destroy_output(output); |
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| 92 | trace_destroy_packet(packet); |
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| 93 | |
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| 94 | return 0; |
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| 95 | } |
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