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package os
import "base:runtime"
import "core:strings"
import "core:sys/posix"
_get_executable_path :: proc(allocator: runtime.Allocator) -> (path: string, err: Error) {
// OpenBSD does not have an API for this, we do our best below.
if len(runtime.args__) <= 0 {
err = .Invalid_Path
return
}
real :: proc(path: cstring, allocator: runtime.Allocator) -> (out: string, err: Error) {
real := posix.realpath(path)
if real == nil {
err = _get_platform_error()
return
}
defer posix.free(real)
return clone_string(string(real), allocator)
}
arg := runtime.args__[0]
sarg := string(arg)
if len(sarg) == 0 {
err = .Invalid_Path
return
}
if sarg[0] == '.' || sarg[0] == '/' {
return real(arg, allocator)
}
temp_allocator := TEMP_ALLOCATOR_GUARD({ allocator })
buf := strings.builder_make(temp_allocator)
paths := get_env("PATH", temp_allocator)
for dir in strings.split_iterator(&paths, ":") {
strings.builder_reset(&buf)
strings.write_string(&buf, dir)
strings.write_string(&buf, "/")
strings.write_string(&buf, sarg)
cpath := strings.to_cstring(&buf) or_return
if posix.access(cpath, {.X_OK}) == .OK {
return real(cpath, allocator)
}
}
err = .Invalid_Path
return
}
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