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00022 #include "Common/Compat.h"
00023
00024 #include <iostream>
00025
00026 #include "Checksum.h"
00027 #include "FileUtils.h"
00028
00029 using namespace Hypertable;
00030 using namespace std;
00031
00032 namespace {
00033
00034 const char *usage_str =
00035 "\n" \
00036 "usage: java org.hypertable.Common.Checksum <algorithm> <file>\n" \
00037 "\n" \
00038 "This program runs the checksum algorithm, <algorithm>, over the bytes\n" \
00039 "of the input file <file> and displays the resulting checksum as a\n" \
00040 "signed integer.\n" \
00041 "\n" \
00042 "Supported Algorithms:\n" \
00043 "\n" \
00044 " fletcher32\n" \
00045 "\n";
00046
00047 }
00048
00052 int main(int argc, char **argv) {
00053
00054 if (argc != 3) {
00055 cout << usage_str << endl;
00056 exit(1);
00057 }
00058
00059 if (!strcmp(argv[1], "fletcher32")) {
00060 off_t len;
00061 char *data = FileUtils::file_to_buffer(argv[2], &len);
00062 int32_t checksum = fletcher32(data, len);
00063 cout << checksum << endl;
00064 }
00065 else {
00066 cout << usage_str << endl;
00067 exit(1);
00068 }
00069
00070 return 0;
00071 }
