48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
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#include <iostream>
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#include <fstream>
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#include <cstring>
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#include <unistd.h>
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#include <signal.h>
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#include <chrono>
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using namespace std;
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int main(int argc, char **argv)
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{
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auto startmain = chrono::high_resolution_clock::now();
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if(argc != 5)
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{
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cout <<"usage: ./partitioner.out <path-to-file> <pattern> <search-start-position> <search-end-position>\nprovided arguments:\n";
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for(int i = 0; i < argc; i++)
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cout << argv[i] << "\n";
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return -1;
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}
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char *file_to_search_in = argv[1];
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char *pattern_to_search_for = argv[2];
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int len = sizeof(pattern_to_search_for);
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int search_start_position = atoi(argv[3]);
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int search_end_position = atoi(argv[4]);
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int find = 0;
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pid_t pid = getpid();
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ifstream file(file_to_search_in, ios::binary);
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int len2 = search_end_position - search_start_position;
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string buffer;
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buffer.resize(len2);
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file.seekg(search_start_position);
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file.read(&buffer[0], len2);
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//TODO
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auto a = buffer.find(pattern_to_search_for);
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if(a != string::npos) {
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cout << "[" << pid << "]" << " found at" << " " << a + search_start_position << endl;
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}
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else {
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cout << "[" << pid << "]" << " didn't find\n";
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}
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auto endmain = std::chrono::high_resolution_clock::now();
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chrono::duration<double> mainduration = endmain - startmain;
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cout << mainduration.count() << endl;
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return 0;
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}
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