Use win32_execable_file() in test, which and execable.c

1 files changed, 32 insertions, 0 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index a6c969596..7dda6cd1b 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -830,3 +830,35 @@ int mingw_access(const char *name, int mode)
 
         return -1;
 }
+
+/* check if path can be made into an executable by adding a suffix;
+ * return an allocated string containing the path if it can;
+ * return NULL if not.
+ *
+ * if path already has a suffix don't even bother trying
+ */
+char *win32_execable_file(const char *p)
+{
+        char *path;
+        int len = strlen(p);
+
+        if (len > 4 && (!strcasecmp(p+len-4, ".exe") ||
+                                        !strcasecmp(p+len-4, ".com"))) {
+                return NULL;
+        }
+
+        if ( (path=malloc(len+5)) != NULL ) {
+                memcpy(path, p, len);
+                memcpy(path+len, ".exe", 5);
+                if (execable_file(path)) {
+                        return path;
+                }
+                memcpy(path+len, ".com", 5);
+                if (execable_file(path)) {
+                        return path;
+                }
+                free(path);
+        }
+
+        return NULL;
+}