A basic module for parsing Fortran namelists and converting them to a JSON data structure. It is written in modern Fortran.
Note that the parser is very simple and only works on a subset of valid namelist files. It may be expanded in the future.
The namelist must be formatted like so:
&NAMELIST_NAME
var1%A = 3,
var1%B = true,
var1%C(1) = '1',
var1%C(2) = '1',
var1%C(3) = '1',
var1%E = 'a string',
var1%F%G = 0,
var1%H(2)%I = 2.0,
var2%J%K = F
/Each variable must be on only one line. The value to the right of the = sign must be an integer, real, logical, or string. Multiple namelines per file are allowed.
The example above would be converted into the JSON file:
{
"namelist_name": {
"var1": {
"a": 3,
"b": true,
"c": ["1", "1", "1"],
"e": "a string",
"f": {
"g": 0
},
"h": [
null,
{
"i": 0.2E+1
}
]
},
"var2": {
"j": {
"k": false
}
}
}
}A fpm.toml file is provided for compiling namelist2json with the Fortran Package Manager. For example, to build:
fpm build --profile release
To run the unit tests:
fpm test
To use namelist2json within your fpm project, add the following to your fpm.toml file:
[dependencies]
namelist2json = { git="https://github.com/jacobwilliams/namelist2json.git" }or, to use a specific version:
[dependencies]
namelist2json = { git="https://github.com/jacobwilliams/namelist2json.git", tag = "1.0.0" }To generate the documentation using ford, run: ford ford.md
This project requires json-fortran, which will be downloaded by FPM.
The latest API documentation for the master branch can be found here. This was generated from the source code using FORD.
This project is hosted on GitHub at: https://github.com/jacobwilliams/namelist2json
This library is released under a permissive BSD-3 license.
- To do a similar thing using Python, you could use f90nml.
- fast-namelist
- JSON-Fortran
- fortran-csv-module