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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/util/random.h>
#include <vespa/vespalib/stllike/string.h>
#include <vespa/vespalib/locale/c.h>
#include <cmath>
#include <vector>
int main(int argc, char **argv)
{
vespalib::RandomGen rnd(1);
double logmean = std::log(1000.0);
double lstddev = std::log(2.0);
if (argc > 2) {
lstddev = std::log(vespalib::locale::c::strtod(argv[--argc], NULL));
logmean = std::log(vespalib::locale::c::strtod(argv[--argc], NULL));
} else if (argc > 1) {
logmean = std::log(vespalib::locale::c::strtod(argv[--argc], NULL));
}
fprintf(stderr, "100 typical friendlist sizes: ");
for (int i = 0; i < 100; ++i) {
int32_t want = (uint32_t)std::exp(rnd.nextNormal(logmean, lstddev));
fprintf(stderr, " %u", want);
}
fprintf(stderr, "\n");
uint32_t person = 0;
while (!feof(stdin)) {
++person;
std::vector<vespalib::string> friends;
int32_t want = (uint32_t)std::exp(rnd.nextNormal(logmean, lstddev));
if (want < 17) want = (uint32_t)(std::exp(logmean)+0.99);
if (want < 1) want = 1;
printf("me: %u friends:", person);
while (want > 0) {
char line[100];
if (fgets(line, 100, stdin) == NULL) {
break;
}
if (rnd.nextUint32() % 42 == 17) {
vespalib::string s(line);
s.chomp();
friends.push_back(s);
--want;
}
}
while (!friends.empty()) {
printf(" %s", friends.back().c_str());
friends.pop_back();
}
printf("\n");
fflush(stdout);
}
}
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