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#include <pwd.h>
#include <sys/types.h>
#include <string>
#include <iostream>
#include <subprocess.h>
#include <filesystem>
#include "util.h"
using namespace std;
int gerbolyze::run_cargo_command(const char *cmd_name, const char *cmdline[], const char *envvar) {
const char *homedir;
if ((homedir = getenv("HOME")) == NULL) {
homedir = getpwuid(getuid())->pw_dir;
}
string homedir_s(homedir);
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[0] = envvar_val;
}
break;
case 1:
cmdline[0] = cmd_name;
break;
case 2:
cmdline[0] = cargo_bin_dir.c_str();
break;
}
struct subprocess_s subprocess;
int rc = subprocess_create(cmdline, subprocess_option_inherit_environment, &subprocess);
if (rc) {
cerr << "Error calling " << cmd_name << endl;
return EXIT_FAILURE;
}
proc_rc = -1;
rc = subprocess_join(&subprocess, &proc_rc);
if (rc) {
cerr << "Error calling " << cmd_name << endl;
return EXIT_FAILURE;
}
rc = subprocess_destroy(&subprocess);
if (rc) {
cerr << "Error calling " << cmd_name << 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) {
cerr << "Error: Cannot find " << cmd_name << ". Is it installed and in $PATH?" << endl;
return EXIT_FAILURE;
}
if (proc_rc) {
cerr << cmd_name << " returned an error code: " << proc_rc << endl;
return EXIT_FAILURE;
}
return 0;
}
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