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April 5, 2017 16:44
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Simple Linux console application for printing progress of per line output items (i.e progress of printing sha sums of listed files via parallels), to compile use: g++ -O3 -o progress -Wall -Wno-long-long -pedantic -std=c++11 progress.cpp
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| #include <cstdio> | |
| #include <cstdlib> | |
| #include <cstring> | |
| #define eprintf(...) fprintf(stderr, __VA_ARGS__) | |
| int main(int argc, const char* argv[]) | |
| { | |
| if (argc != 2) | |
| { | |
| eprintf("Usage: %s <number of lines>\n", argv[0]); | |
| return 1; | |
| } | |
| long total_lines = atol(argv[1]); | |
| long current_line = 0; | |
| fprintf(stderr, "Progress: %ld / %ld (%.02f%%)\r", current_line, total_lines, current_line / double(total_lines) * 100.f); | |
| int BUFFER_SIZE = 1024; | |
| char* buffer = new char[BUFFER_SIZE]; | |
| while (!feof(stdin)) | |
| { | |
| if (!fgets(buffer, BUFFER_SIZE, stdin)) | |
| break; | |
| int l = strlen(buffer); | |
| if (l == BUFFER_SIZE - 1) | |
| printf("%*s", l, buffer); | |
| else | |
| { | |
| ++current_line; | |
| fprintf(stderr, "Progress: %ld / %ld (%.02f%%)\r", current_line, total_lines, current_line / double(total_lines) * 100.f); | |
| printf("%*s", l, buffer); | |
| } | |
| } | |
| fprintf(stderr, "Complete%*s\n", 200, " "); | |
| delete [] buffer; | |
| return 0; | |
| } |
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