path

1 files changed, 42 insertions, 0 deletions

diff --git a/src/path.cc b/src/path.cc
new file mode 100644
index 0000000..519fd20
--- /dev/null
+++ b/src/path.cc
@@ -0,0 +1,42 @@
+#include "path.h"
+
+namespace ov4
+{
+
+using namespace std;
+
+string find_cmd(char* s)
+{
+    string tmp = s;
+    return find_cmd(tmp);
+}
+
+string find_cmd(string s)
+{
+    if (s.size() == 0) return "/";
+    if (s[0] == '/') return 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;
+        cout << cmd << endl;
+        if (access(cmd.c_str(), F_OK) == 0)
+            return cmd;
+
+        if (j == l)
+            return "/";
+
+        j++;
+        i=j;
+
+    }
+}
+
+
+}