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Problem with string escaping. #238

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Klafyvel opened this issue Jul 22, 2024 · 2 comments
Open

Problem with string escaping. #238

Klafyvel opened this issue Jul 22, 2024 · 2 comments
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bug parser

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@Klafyvel
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Hi there,
YAML.jl seems to be producing ill-formated yaml when given the following input:

julia> s
"Attosecond-resolution Hong\uadOu-mandel interferometry"

julia> using YAML

julia> f = tempname()
"/tmp/jl_bShkvctGnQ"

julia> YAML.write_file(f, Dict("a"=>s))

julia> println(String(read(f)))
a: "Attosecond-resolution Hong\uadOu-mandel interferometry"
julia> YAML.load_file(f)
ERROR: while scanning a double-quoted scalar at line 1, column 3: expected escape sequence of 4 hexadecimaldigits, but found 'O' at line 1, column 30
Stacktrace:
  [1] scan_flow_scalar_non_spaces(stream::YAML.TokenStream, double::Bool, start_mark::YAML.Mark)
    @ YAML ~/.julia/packages/YAML/POf8J/src/scanner.jl:1306
  [2] scan_flow_scalar(stream::YAML.TokenStream, style::Char)
    @ YAML ~/.julia/packages/YAML/POf8J/src/scanner.jl:1237
  [3] fetch_flow_scalar
    @ ~/.julia/packages/YAML/POf8J/src/scanner.jl:770 [inlined]
  [4] fetch_double
    @ ~/.julia/packages/YAML/POf8J/src/scanner.jl:758 [inlined]
  [5] fetch_more_tokens(stream::YAML.TokenStream)
    @ YAML ~/.julia/packages/YAML/POf8J/src/scanner.jl:274
  [6] peek(stream::YAML.TokenStream)
    @ YAML ~/.julia/packages/YAML/POf8J/src/scanner.jl:198
  [7] parse_block_mapping_value(stream::YAML.EventStream)
    @ YAML ~/.julia/packages/YAML/POf8J/src/parser.jl:461
  [8] peek(stream::YAML.EventStream)
    @ YAML ~/.julia/packages/YAML/POf8J/src/parser.jl:54
  [9] compose_node(composer::YAML.Composer)
    @ YAML ~/.julia/packages/YAML/POf8J/src/composer.jl:93
 [10] __compose_mapping_node(event::YAML.ScalarEvent, composer::YAML.Composer, node::YAML.MappingNode)
    @ YAML ~/.julia/packages/YAML/POf8J/src/composer.jl:154
 [11] _compose_mapping_node(start_event::YAML.MappingStartEvent, composer::YAML.Composer, anchor::Nothing)
    @ YAML ~/.julia/packages/YAML/POf8J/src/composer.jl:174
 [12] compose_mapping_node(composer::YAML.Composer, anchor::Nothing)
    @ YAML ~/.julia/packages/YAML/POf8J/src/composer.jl:183
 [13] handle_event(event::YAML.MappingStartEvent, composer::YAML.Composer)
    @ YAML ~/.julia/packages/YAML/POf8J/src/composer.jl:86
 [14] compose_node(composer::YAML.Composer)
    @ YAML ~/.julia/packages/YAML/POf8J/src/composer.jl:94
 [15] compose_document(composer::YAML.Composer)
    @ YAML ~/.julia/packages/YAML/POf8J/src/composer.jl:50
 [16] compose(events::YAML.EventStream)
    @ YAML ~/.julia/packages/YAML/POf8J/src/composer.jl:38
 [17] load(ts::YAML.TokenStream, constructor::YAML.Constructor)
    @ YAML ~/.julia/packages/YAML/POf8J/src/YAML.jl:36
 [18] load(ts::YAML.TokenStream, more_constructors::Nothing, multi_constructors::Dict{Any, Any}; dicttype::Type{Dict{Any, Any}}, constructorType::typeof(YAML.SafeConstructor))
    @ YAML ~/.julia/packages/YAML/POf8J/src/YAML.jl:42
 [19] load
    @ ~/.julia/packages/YAML/POf8J/src/YAML.jl:42 [inlined]
 [20] load (repeats 3 times)
    @ ~/.julia/packages/YAML/POf8J/src/YAML.jl:45 [inlined]
 [21] #16
    @ ~/.julia/packages/YAML/POf8J/src/YAML.jl:94 [inlined]
 [22] open(::YAML.var"#16#17"{@Kwargs{}, Tuple{}}, ::String, ::Vararg{String}; kwargs::@Kwargs{})
    @ Base ./io.jl:396
 [23] open
    @ ./io.jl:393 [inlined]
 [24] load_file(::String)
    @ YAML ~/.julia/packages/YAML/POf8J/src/YAML.jl:92
 [25] top-level scope
    @ REPL[40]:1
pkg> st YAML
Project ZoteroToPapis v0.1.0
Status `~/.julia/dev/ZoteroToPapis/Project.toml`
  [ddb6d928] YAML v0.4.11

julia> versioninfo()
Julia Version 1.10.4
Commit 48d4fd48430 (2024-06-04 10:41 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 4 × Intel(R) Core(TM) i7-6600U CPU @ 2.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, skylake)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)
Environment:
  LD_PRELOAD = /usr/lib64/libstdc++.so.6

This might be related to #108?
@kescobo
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kescobo commented Jul 22, 2024

I think #108 only deals with keys, but you can try ] add YAML#master and see if the problem persists?

@Klafyvel
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Klafyvel commented Jul 22, 2024 •
edited
Loading

Hi, I confirm that I can reproduce on master. :)

julia> s = "Attosecond-resolution Hong\uadOu-mandel interferometry"
"Attosecond-resolution Hong\uadOu-mandel interferometry"

julia> using YAML

julia> f = tempname()
"/tmp/jl_RSXODkvU9C"

julia> YAML.write_file(f, Dict("a"=>s))

julia> println(String(read(f)))
a: "Attosecond-resolution Hong\uadOu-mandel interferometry"


julia> YAML.load_file(f)
ERROR: while scanning a double-quoted scalar at line 1, column 3: expected escape sequence of 4 hexadecimaldigits, but found 'O' at line 1, column 30
Stacktrace:
  [1] scan_flow_scalar_non_spaces(stream::YAML.TokenStream, double::Bool, start_mark::YAML.Mark)
    @ YAML ~/.julia/packages/YAML/twmeD/src/scanner.jl:1362
  [2] scan_flow_scalar(stream::YAML.TokenStream, style::Char)
    @ YAML ~/.julia/packages/YAML/twmeD/src/scanner.jl:1293
  [3] fetch_flow_scalar
    @ ~/.julia/packages/YAML/twmeD/src/scanner.jl:762 [inlined]
  [4] fetch_double
    @ ~/.julia/packages/YAML/twmeD/src/scanner.jl:750 [inlined]
  [5] fetch_more_tokens(stream::YAML.TokenStream)
    @ YAML ~/.julia/packages/YAML/twmeD/src/scanner.jl:267
  [6] peek(stream::YAML.TokenStream)
    @ YAML ~/.julia/packages/YAML/twmeD/src/scanner.jl:191
  [7] parse_block_mapping_value(stream::YAML.EventStream)
    @ YAML ~/.julia/packages/YAML/twmeD/src/parser.jl:459
  [8] peek(stream::YAML.EventStream)
    @ YAML ~/.julia/packages/YAML/twmeD/src/parser.jl:52
  [9] compose_node(composer::YAML.Composer)
    @ YAML ~/.julia/packages/YAML/twmeD/src/composer.jl:87
 [10] __compose_mapping_node(event::YAML.ScalarEvent, composer::YAML.Composer, node::YAML.MappingNode)
    @ YAML ~/.julia/packages/YAML/twmeD/src/composer.jl:148
 [11] _compose_mapping_node(start_event::YAML.MappingStartEvent, composer::YAML.Composer, anchor::Nothing)
    @ YAML ~/.julia/packages/YAML/twmeD/src/composer.jl:168
 [12] compose_mapping_node(composer::YAML.Composer, anchor::Nothing)
    @ YAML ~/.julia/packages/YAML/twmeD/src/composer.jl:177
 [13] handle_event(event::YAML.MappingStartEvent, composer::YAML.Composer)
    @ YAML ~/.julia/packages/YAML/twmeD/src/composer.jl:81
 [14] compose_node(composer::YAML.Composer)
    @ YAML ~/.julia/packages/YAML/twmeD/src/composer.jl:88
 [15] compose_document(composer::YAML.Composer)
    @ YAML ~/.julia/packages/YAML/twmeD/src/composer.jl:46
 [16] compose(events::YAML.EventStream, resolver::YAML.Resolver)
    @ YAML ~/.julia/packages/YAML/twmeD/src/composer.jl:33
 [17] load(tokenstream::YAML.TokenStream, constructor::YAML.Constructor)
    @ YAML ~/.julia/packages/YAML/twmeD/src/YAML.jl:77
 [18] load(ts::YAML.TokenStream, more_constructors::Nothing, multi_constructors::Dict{…}; dicttype::Type{…}, constructorType::typeof(YAML.SafeConstructor))
    @ YAML ~/.julia/packages/YAML/twmeD/src/YAML.jl:84
 [19] load
    @ ~/.julia/packages/YAML/twmeD/src/YAML.jl:84 [inlined]
 [20] load (repeats 3 times)
    @ ~/.julia/packages/YAML/twmeD/src/YAML.jl:87 [inlined]
 [21] #16
    @ ~/.julia/packages/YAML/twmeD/src/YAML.jl:155 [inlined]
 [22] open(::YAML.var"#16#17"{@Kwargs{}, Tuple{}}, ::String, ::Vararg{String}; kwargs::@Kwargs{})
    @ Base ./io.jl:396
 [23] open
    @ ./io.jl:393 [inlined]
 [24] load_file(::String)
    @ YAML ~/.julia/packages/YAML/twmeD/src/YAML.jl:153
 [25] top-level scope
    @ REPL[8]:1
Some type information was truncated. Use `show(err)` to see complete types.

(jl_wPLlVl) pkg> st
Status `/tmp/jl_wPLlVl/Project.toml`
  [ddb6d928] YAML v0.4.11 `https://github.com/JuliaData/YAML.jl.git#master`

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@kescobo @Klafyvel