Cannot find title field for this BibTeX article

[ali-ramadhan]

Not sure if the BibTeX entry is bad but it seems that import_bibtex could not pull the title field out for some reason.

julia> using Bibliography

shell> cat bad_article.bib
@article{Hholami16,
        title = {{FFT}, {FMM}, or {Multigrid}? {A} comparative {Study} of {State}-{Of}-the-{Art} {Poisson} {Solvers} for {Uniform} and {Nonuniform} {Grids} in the {Unit} {Cube}},
        volume = {38},
        doi = {10.1137/15M1010798},
        number = {3},
        journal = {SIAM Journal on Scientific Computing},
        author = {Gholami, Amir and Malhotra, Dhairya and Sundar, Hari and Biros, George},
        year = {2016},
        pages = {C280--C306}
}

julia> import_bibtex("bad_article.bib")
ERROR: Missing the title field(s).
Stacktrace:
 [1] error(::String) at ./error.jl:33
 [2] BibInternal.BibTeX.Article(::String, ::String, ::String, ::String, ::String, ::String, ::String, ::String, ::String, ::String, ::String, ::String, ::Dict{String,String}) at /home/alir/.julia/packages/BibInternal/mZf28/src/bibtex.jl:102
 [3] BibInternal.BibTeX.Article(::String, ::Dict{String,String}) at /home/alir/.julia/packages/BibInternal/mZf28/src/bibtex.jl:137
 [4] make_bibtex_entry(::String, ::String, ::Dict{String,String}) at /home/alir/.julia/packages/BibInternal/mZf28/src/bibtex.jl:14
 [5] macro expansion at /home/alir/.julia/packages/Automa/fyalL/src/codegen.jl:137 [inlined]
 [6] parse(::String) at /home/alir/.julia/packages/BibParser/Qhq5E/src/bibtex.jl:137
 [7] parse_file at /home/alir/.julia/packages/BibParser/Qhq5E/src/bibtex.jl:144 [inlined]
 [8] import_bibtex(::String) at /home/alir/.julia/packages/Bibliography/MZcl2/src/bibtex.jl:2
 [9] top-level scope at REPL[2]:1

[ali-ramadhan]

Same with this entry:

@article{Qiu02,
    title = {On the {Construction}, {Comparison}, and {Local} {Characteristic} {Decomposition} for {High}-{Order} {Central} {WENO} {Schemes}},
    volume = {183},
    doi = {10.1006/jcph.2002.7191},
    journal = {Journal of Computational Physics},
    author = {Qiu, Jianxian and Shu, Chi-Wang},
    year = {2002},
    pages = {187--209}
}

[Azzaare]

Nested braces are not yet supported, unless you're value is inside a quoted "" value. For instance, the following would work.

@article{Qiu02,
    title = "On the {Construction}, {Comparison}, and {Local} {Characteristic} {Decomposition} for {High}-{Order} {Central} {WENO} {Schemes}",
    volume = {183},
    doi = {10.1006/jcph.2002.7191},
    journal = {Journal of Computational Physics},
    author = {Qiu, Jianxian and Shu, Chi-Wang},
    year = {2002},
    pages = {187--209}
}

Automa.jl, with which this BibTeX parser is written, provides conditional state exit (for instance when the numbers of opening and closing braces are equal), but I don't get how to use it correctly. Unfortunately, I could not get help from the package maintainer so far. (maybe I should ask on the discourse)

I can add artificially one or two level of nested braces, but it will increase the precompilation time by a lot I think. I'm going to try, just in case.

On the long term, if the automa is too big, I would like to try to provide binaries of it (I don't mind if I need one day to compile it ...). If it is not viable, write a full parser by myself but ...

Also, nested braces need to be handled to have an output without it. The original bib entry (reformatted) is kept within the BibInternal format.

[ali-ramadhan]

Ah nice, didn't realize the limitation with the nested braces. I'm happy to just change my titles to use the double quotes.

[Azzaare]

I will mark the issue as closed. However, we do not replace the content of braces for the moment.