github.com/linchen2chris/hugo@v0.0.0-20230307053224-cec209389705/tpl/os/init.go (about)

     1  // Copyright 2017 The Hugo Authors. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package os
    15  
    16  import (
    17  	"context"
    18  
    19  	"github.com/gohugoio/hugo/deps"
    20  	"github.com/gohugoio/hugo/tpl/internal"
    21  )
    22  
    23  const name = "os"
    24  
    25  func init() {
    26  	f := func(d *deps.Deps) *internal.TemplateFuncsNamespace {
    27  		ctx := New(d)
    28  
    29  		ns := &internal.TemplateFuncsNamespace{
    30  			Name:    name,
    31  			Context: func(cctx context.Context, args ...any) (any, error) { return ctx, nil },
    32  		}
    33  
    34  		ns.AddMethodMapping(ctx.Getenv,
    35  			[]string{"getenv"},
    36  			[][2]string{},
    37  		)
    38  
    39  		ns.AddMethodMapping(ctx.ReadDir,
    40  			[]string{"readDir"},
    41  			[][2]string{
    42  				{`{{ range (readDir "files") }}{{ .Name }}{{ end }}`, "README.txt"},
    43  			},
    44  		)
    45  
    46  		ns.AddMethodMapping(ctx.ReadFile,
    47  			[]string{"readFile"},
    48  			[][2]string{
    49  				{`{{ readFile "files/README.txt" }}`, `Hugo Rocks!`},
    50  			},
    51  		)
    52  
    53  		ns.AddMethodMapping(ctx.FileExists,
    54  			[]string{"fileExists"},
    55  			[][2]string{
    56  				{`{{ fileExists "foo.txt" }}`, `false`},
    57  			},
    58  		)
    59  
    60  		return ns
    61  	}
    62  
    63  	internal.AddTemplateFuncsNamespace(f)
    64  }