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# new type to help incrementally read strings
container stream [
index:number
data:address:array:character
]
recipe new-stream [
default-space:address:array:location <- new location:type, 30:literal
result:address:stream <- new stream:type
i:address:number <- get-address result:address:stream/deref, index:offset
i:address:number/deref <- copy 0:literal
d:address:address:array:character <- get-address result:address:stream/deref, data:offset
d:address:address:array:character/deref <- next-ingredient
reply result:address:stream
]
recipe rewind-stream [
default-space:address:array:location <- new location:type, 30:literal
in:address:stream <- next-ingredient
x:address:number <- get-address in:address:stream/deref, index:offset
x:address:number/deref <- copy 0:literal
reply in:address:stream/same-as-arg:0
]
recipe read-line [
default-space:address:array:location <- new location:type, 30:literal
in:address:stream <- next-ingredient
idx:address:number <- get-address in:address:stream/deref, index:offset
s:address:array:character <- get in:address:stream/deref, data:offset
next-idx:number <- find-next s:address:array:character, 10:literal/newline, idx:address:number/deref
result:address:array:character <- string-copy s:address:array:character, idx:address:number/deref, next-idx:number
idx:address:number/deref <- add next-idx:number, 1:literal # skip newline
reply result:address:array:character
]
recipe end-of-stream? [
default-space:address:array:location <- new location:type, 30:literal
in:address:stream <- next-ingredient
idx:number <- get in:address:stream/deref, index:offset
s:address:array:character <- get in:address:stream/deref, data:offset
len:number <- length s:address:array:character/deref
result:boolean <- greater-or-equal idx:number, len:number
reply result:boolean
]
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