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#include <sys/types.h>
#include <string>
#include <iostream>
#include <vector>
#ifndef NOFORK
#include <pwd.h>
#include <subprocess.h>
#endif
#include <filesystem>
#include "util.h"
#ifndef NOFORK
int gerbolyze::run_cargo_command(const char *cmd_name, std::vector<std::string> &cmdline, const char *envvar) {
//std::cerr << "Running command: " << cmd_name << " ";
std::vector<const char *> cmdline_c = {nullptr};
for (std::string &s : cmdline) {
//std::cerr << s << " ";
cmdline_c.push_back(s.c_str());
}
cmdline_c.push_back(nullptr);
//std::cerr << std::endl;
const char *homedir;
if ((homedir = getenv("HOME")) == NULL) {
homedir = getpwuid(getuid())->pw_dir;
}
std::string homedir_s(homedir);
std::string cargo_bin_dir = homedir_s + "/.cargo/bin/" + cmd_name;
bool found = false;
int proc_rc = -1;
for (int i=0; i<3; i++) {
const char *envvar_val;
switch (i) {
case 0:
if ((envvar_val = getenv(envvar)) == NULL) {
continue;
} else {
cmdline_c[0] = envvar_val;
}
break;
case 1:
cmdline_c[0] = cmd_name;
break;
case 2:
cmdline_c[0] = cargo_bin_dir.c_str();
break;
}
struct subprocess_s subprocess;
int rc = subprocess_create(cmdline_c.data(), subprocess_option_inherit_environment, &subprocess);
if (rc) {
std::cerr << "Error calling " << cmd_name << std::endl;
return EXIT_FAILURE;
}
proc_rc = -1;
rc = subprocess_join(&subprocess, &proc_rc);
if (rc) {
std::cerr << "Error calling " << cmd_name << std::endl;
return EXIT_FAILURE;
}
rc = subprocess_destroy(&subprocess);
if (rc) {
std::cerr << "Error calling " << cmd_name << std::endl;
return EXIT_FAILURE;
}
/* Fail if the command given in the environment variable could not be found. */
if (i > 0 && proc_rc == 255) {
continue;
}
found = true;
break;
}
if (!found) {
std::cerr << "Error: Cannot find " << cmd_name << ". Is it installed and in $PATH?" << std::endl;
return EXIT_FAILURE;
}
if (proc_rc) {
std::cerr << cmd_name << " returned an error code: " << proc_rc << std::endl;
return EXIT_FAILURE;
}
return 0;
}
#else
int gerbolyze::run_cargo_command(const char *cmd_name, std::vector<std::string> &cmdline, const char *envvar) {
(void) cmd_name, (void) cmdline, (void) envvar;
std::cerr << "Error: Cannot spawn " << cmd_name << " subprocess since binary was built with fork/exec disabled (-DNOFORK=1)" << std::endl;
return EXIT_FAILURE;
}
#endif
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