57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
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// SHARDZ - Shard the output of any process for distributed processin - Developed by acidvegas in C (https://github.com/acidvegas/shardz)
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// shardz.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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void print_usage(const char* program_name) {
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fprintf(stderr, "Usage: %s INDEX/TOTAL\n", program_name);
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exit(1);
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}
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int main(int argc, char *argv[]) {
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if (argc != 2) {
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print_usage(argv[0]);
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}
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char *slash = strchr(argv[1], '/');
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if (!slash) {
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print_usage(argv[0]);
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}
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*slash = '\0';
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char *index_str = argv[1];
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char *total_str = slash + 1;
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char *endptr;
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long index = strtol(index_str, &endptr, 10);
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if (*endptr != '\0' || index < 1) {
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print_usage(argv[0]);
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}
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long total = strtol(total_str, &endptr, 10);
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if (*endptr != '\0' || total < 1) {
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print_usage(argv[0]);
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}
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if (index > total) {
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fprintf(stderr, "Error: INDEX cannot be greater than TOTAL\n");
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exit(1);
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}
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char *line = NULL;
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size_t len = 0;
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ssize_t read;
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long current_line = 1;
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while ((read = getline(&line, &len, stdin)) != -1) {
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if (((current_line - index) % total) == 0) {
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printf("%s", line);
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}
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current_line++;
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}
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free(line);
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return 0;
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}
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