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#include "path.h"
namespace ov4
{
using namespace std;
string find_cmd(const char * s)
{
const string tmp = s;
return find_cmd(tmp);
}
string find_cmd(const string &s)
{
if (s.size() == 0) return "";
string unified_s = path_unifier(s);
if (access(unified_s.c_str(), F_OK) == 0)
return unified_s;
string path = getenv("PATH");
size_t i = 0, j = 0, l = path.size();
while (true)
{
for (; j < l; j++)
if (path[j] == ':')
break;
string cmd = path.substr(i, j-i) + '/' +s;
if (access(cmd.c_str(), F_OK) == 0)
return cmd;
if (j == l)
return "/";
j++;
i=j;
}
}
string path_unifier(const string &s)
{
if (s.size() == 0) return "";
if (s[0] == '/') return s;
if (s[0] == '.')
{
return get_current_dir() + s.substr(1);
}
}
int set_current_dir(const string &s)
{
return chdir(s.c_str());
}
string get_current_dir()
{
return (string)(get_current_dir_name());
}
}
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