62 lines
1.4 KiB
V
62 lines
1.4 KiB
V
module embed
|
|
|
|
import os
|
|
|
|
// https://github.com/vlang/rfcs/blob/master/embedding_resources.md
|
|
// EmbeddedData encapsulates functionality for the `$embed_file()` compile time call.
|
|
pub struct EmbeddedData {
|
|
path string
|
|
apath string
|
|
mut:
|
|
compressed byteptr
|
|
uncompressed byteptr
|
|
free_compressed bool
|
|
free_uncompressed bool
|
|
pub:
|
|
len int
|
|
}
|
|
|
|
pub fn (ed EmbeddedData) str() string {
|
|
return 'embed.EmbeddedData{ len: $ed.len, path: "$ed.path", path: "$ed.apath", uncompressed: ${ptr_str(ed.uncompressed)} }'
|
|
}
|
|
|
|
[unsafe]
|
|
pub fn (mut ed EmbeddedData) free() {
|
|
unsafe {
|
|
ed.path.free()
|
|
ed.apath.free()
|
|
if ed.free_compressed {
|
|
free(ed.compressed)
|
|
}
|
|
if ed.free_uncompressed {
|
|
free(ed.uncompressed)
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn (mut ed EmbeddedData) data() byteptr {
|
|
if !isnil(ed.uncompressed) {
|
|
return ed.uncompressed
|
|
} else {
|
|
if isnil(ed.uncompressed) && !isnil(ed.compressed) {
|
|
// TODO implement uncompression
|
|
// See also C Gen.gen_embedded_data() where the compression should occur.
|
|
ed.uncompressed = ed.compressed
|
|
} else {
|
|
mut path := os.resource_abs_path(ed.path)
|
|
if !os.is_file(path) {
|
|
path = ed.apath
|
|
if !os.is_file(path) {
|
|
panic('EmbeddedData error: files "$ed.path" and "$ed.apath" do not exist')
|
|
}
|
|
}
|
|
bytes := os.read_bytes(path) or {
|
|
panic('EmbeddedData error: "$path" could not be read: $err')
|
|
}
|
|
ed.uncompressed = bytes.data
|
|
ed.free_uncompressed = true
|
|
}
|
|
}
|
|
return ed.uncompressed
|
|
}
|