ff tab counter

auto-flake-update
Yorick van Pelt 6 months ago
parent b8d4874625
commit dfbfab5102
Signed by: yorick
GPG Key ID: A36E70F9DC014A15
  1. 55
      pkgs/countfftabs/count.cpp
  2. 14
      pkgs/countfftabs/default.nix
  3. 18
      pkgs/default.nix

@ -0,0 +1,55 @@
#include <iostream>
#include <fstream>
#include <endian.h>
#include <simdjson.h>
#include <lz4.h>
using namespace simdjson;
// /home/yorick/.mozilla/firefox/sdgle03g.default/sessionstore-backups/recovery.jsonlz4
// jq '.windows | map(.tabs | length) | add'
padded_string read_mozlz4a_file(const std::string& file) {
std::ifstream is(file, std::ifstream::binary);
if (!is) {
std::cerr << "error opening file" << std::endl;
exit(1);
}
is.seekg(0, is.end);
size_t insz = is.tellg();
is.seekg(0, is.beg);
char * buffer = new char[insz];
is.read(buffer, insz);
if (!is) {
std::cerr << "error reading file" << std::endl;
exit(1);
}
is.close();
if (memcmp(buffer, "mozLz40", 8)) {
std::cerr << "not a mozLZa file" << std::endl;
exit(1);
}
size_t outsz = le32toh(*(uint32_t *) (buffer + 8));
padded_string out(outsz);
if (LZ4_decompress_safe_partial(buffer + 12, out.data(), insz - 12, outsz, outsz) < 0) {
std::cerr << "decompression error" << std::endl;
exit(1);
}
return out;
}
int main(int ac, char **av) {
ondemand::parser parser;
if (ac < 2) {
std::cerr << "usage: " << av[0] << " .mozilla/firefox/*.default/sessionstore-backups/recovery.jsonlz4" << std::endl;
exit(1);
}
padded_string json = read_mozlz4a_file(av[1]);
ondemand::document session = parser.iterate(json);
ondemand::array windows = session["windows"];
size_t n = 0;
for (auto i : windows) {
ondemand::array tabs = i["tabs"];
n += tabs.count_elements();
}
std::cout << n << std::endl;
}

@ -0,0 +1,14 @@
{
stdenv, simdjson, lz4
}:
stdenv.mkDerivation {
name = "countfftabs";
src = ./.;
buildInputs = [simdjson lz4];
buildPhase = ''
runHook preBuild
g++ -o ./countfftabs count.cpp -I${simdjson}/include -L${simdjson}/lib -lsimdjson -llz4
runHook postBuild
'';
installPhase = "mkdir -p $out/bin; mv ./countfftabs $out/bin/";
}

@ -15,5 +15,23 @@
playerctl = super.playerctl.overrideAttrs (o: {
patches = (o.patches or []) ++ [ ./playerctl-solid-emoji.diff ];
});
countfftabs = super.callPackage ./countfftabs {};
lz4json = super.stdenv.mkDerivation (o: {
pname = "lz4json";
version = "20191229";
src = super.fetchFromGitHub {
repo = o.pname;
owner = "andikleen";
rev = "c44c51005c505de2636cc1e59cde764490de7632";
hash = "sha256-rLjJ7qy7Tx0htW1VxrfCCqVbC6jNCr9H2vdDAfosxCA=";
};
buildInputs = [ super.lz4 ];
nativeBuildInputs = [ super.pkg-config ];
installPhase = ''
runHook preInstall
install -D -t $out/bin lz4jsoncat
runHook postInstall
'';
});
})

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