18 lines
480 B
Rust
18 lines
480 B
Rust
extern crate libc;
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use std::ffi::CStr;
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use libc::c_char;
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#[no_mangle]
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pub extern "C" fn count_substrings(value: *const c_char, substr: *const c_char) -> i32 {
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let c_value = unsafe { CStr::from_ptr(value) };
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let c_substr = unsafe { CStr::from_ptr(substr) };
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match c_value.to_str() {
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Ok(value) => match c_substr.to_str() {
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Ok(substr) => value.match_indices(substr).count() as i32,
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Err(_) => -1,
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},
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Err(_) => -1,
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}
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}
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