diff options
Diffstat (limited to 'deno2/main.rs')
-rw-r--r-- | deno2/main.rs | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/deno2/main.rs b/deno2/main.rs deleted file mode 100644 index 2ba31a16c..000000000 --- a/deno2/main.rs +++ /dev/null @@ -1,60 +0,0 @@ -extern crate libc; -use libc::c_char; -use libc::c_int; -use std::ffi::CStr; -use std::ffi::CString; - -#[link(name = "deno", kind = "static")] -extern "C" { - fn deno_v8_version() -> *const c_char; - fn deno_init(); - fn deno_set_flags(argc: *mut c_int, argv: *mut *mut c_char); -} - -// Pass the command line arguments to v8. -// Returns a vector of command line arguments that v8 did not understand. -fn set_flags() -> Vec<String> { - // deno_set_flags(int* argc, char** argv) mutates argc and argv to remove - // flags that v8 understands. - // Convert command line arguments to a vector of C strings. - let mut argv = std::env::args() - .map(|arg| CString::new(arg).unwrap().into_bytes_with_nul()) - .collect::<Vec<_>>(); - // Make a new array, that can be modified by V8::SetFlagsFromCommandLine(), - // containing mutable raw pointers to the individual command line args. - let mut c_argv = argv.iter_mut() - .map(|arg| arg.as_mut_ptr() as *mut i8) - .collect::<Vec<_>>(); - // Store the length of the argv array in a local variable. We'll pass a - // pointer to this local variable to deno_set_flags(), which then - // updates its value. - let mut c_argc = argv.len() as c_int; - // Let v8 parse the arguments it recognizes and remove them from c_argv. - unsafe { - deno_set_flags(&mut c_argc, c_argv.as_mut_ptr()); - }; - // If c_argc was updated we have to change the length of c_argv to match. - c_argv.truncate(c_argc as usize); - // Copy the modified arguments list into a proper rust vec and return it. - c_argv - .iter() - .map(|ptr| unsafe { - let cstr = CStr::from_ptr(*ptr as *const i8); - let slice = cstr.to_str().unwrap(); - slice.to_string() - }) - .collect::<Vec<_>>() -} - -fn main() { - println!("Hi"); - let args = set_flags(); - unsafe { deno_init() }; - let v = unsafe { deno_v8_version() }; - let c_str = unsafe { CStr::from_ptr(v) }; - let version = c_str.to_str().unwrap(); - println!("version: {}", version); - for arg in args { - println!("arg: {}", arg); - } -} |