PkgTemplates.jl/src/template.jl
2019-09-26 00:32:07 +07:00

139 lines
4.7 KiB
Julia

default_plugins() = [ProjectFile(), SrcDir(), Git(), License(), Readme(), Tests()]
default_user() = LibGit2.getconfig("github.user", "")
default_version() = VersionNumber(VERSION.major)
function default_authors()
name = LibGit2.getconfig("user.name", "")
isempty(name) && return ""
email = LibGit2.getconfig("user.email", "")
return isempty(email) ? name : "$name <$email>"
end
"""
Template(; kwargs...)
A configuration used to generate packages.
## Keyword Arguments
### User Options
- `user::AbstractString="$(default_user())"`: GitHub (or other code hosting service) username.
The default value comes from the global Git config (`github.user`).
If no value is obtained, many plugins that use this value will not work.
- `authors::Union{AbstractString, Vector{<:AbstractString}}="$(default_authors())"`: Package authors.
Like `user`, it takes its default value from the global Git config (`user.name` and `user.email`).
### Package Options
- `dir::AbstractString="$(contractuser(Pkg.devdir()))"`: Directory to place packages in.
- `host::AbstractString="github.com"`: URL to the code hosting service where packages will reside.
- `julia::VersionNumber=$(repr(default_version()))`: Minimum allowed Julia version.
### Template Plugins
- `plugins::Vector{<:Plugin}=Plugin[]`: A list of [`Plugin`](@ref)s used by the template.
- `disable_defaults::Vector{DataType}=DataType[]`: Default plugins to disable.
The default plugins are [`ProjectFile`](@ref), [`SrcDir`](@ref), [`Tests`](@ref), [`Readme`](@ref), [`License`](@ref), and [`Git`](@ref).
To override a default plugin instead of disabling it altogether, supply it via `plugins`.
### Interactive Usage
- `interactive::Bool=false`: When set, the template is created interactively, filling unset keywords with user input.
---
To create a package from a `Template`, use the following syntax:
```julia
julia> t = Template();
julia> t("PkgName")
```
"""
struct Template
authors::Vector{String}
dir::String
host::String
julia::VersionNumber
plugins::Vector{<:Plugin}
user::String
end
Template(; interactive::Bool=false, kwargs...) = Template(Val(interactive); kwargs...)
# Non-interactive constructor.
function Template(::Val{false}; kwargs...)
user = getkw(kwargs, :user)
dir = abspath(expanduser(getkw(kwargs, :dir)))
host = replace(getkw(kwargs, :host), r".*://" => "")
julia = getkw(kwargs, :julia)
authors = getkw(kwargs, :authors)
authors isa Vector || (authors = map(strip, split(authors, ",")))
# User-supplied plugins come first, so that deduping the list will remove the defaults.
plugins = Plugin[]
append!(plugins, getkw(kwargs, :plugins))
disabled = getkw(kwargs, :disable_defaults)
append!(plugins, filter(p -> !(typeof(p) in disabled), default_plugins()))
plugins = sort(unique(typeof, plugins); by=string)
if isempty(user)
foreach(plugins) do p
if needs_username(p)
T = nameof(typeof(p))
s = "$T: Git hosting service username is required, supply user=username"
throw(ArgumentError(s))
end
end
end
return Template(authors, dir, host, julia, plugins, user)
end
"""
(::Template)(pkg::AbstractString)
Generate a package named `pkg` from a [`Template`](@ref).
"""
function (t::Template)(pkg::AbstractString)
endswith(pkg, ".jl") && (pkg = pkg[1:end-3])
pkg_dir = joinpath(t.dir, pkg)
ispath(pkg_dir) && throw(ArgumentError("$pkg_dir already exists"))
mkpath(pkg_dir)
try
foreach((prehook, hook, posthook)) do h
@info "Running $(nameof(h))s"
foreach(sort(t.plugins; by=p -> priority(p, h), rev=true)) do p
h(p, t, pkg_dir)
end
end
catch
rm(pkg_dir; recursive=true, force=true)
rethrow()
end
@info "New package is at $pkg_dir"
end
# Does the template have a plugin that satisfies some predicate?
hasplugin(t::Template, f::Function) = any(f, t.plugins)
hasplugin(t::Template, ::Type{T}) where T <: Plugin = hasplugin(t, p -> p isa T)
# Get a plugin by type.
function getplugin(t::Template, ::Type{T}) where T <: Plugin
i = findfirst(p -> p isa T, t.plugins)
i === nothing ? nothing : t.plugins[i]
end
# Get a keyword, or compute some default value.
getkw(kwargs, k) = get(() -> defaultkw(k), kwargs, k)
# Default Template keyword values.
defaultkw(s::Symbol) = defaultkw(Val(s))
defaultkw(::Val{:authors}) = default_authors()
defaultkw(::Val{:dir}) = Pkg.devdir()
defaultkw(::Val{:disable_defaults}) = DataType[]
defaultkw(::Val{:host}) = "github.com"
defaultkw(::Val{:julia}) = default_version()
defaultkw(::Val{:plugins}) = Plugin[]
defaultkw(::Val{:user}) = default_user()