diff options
Diffstat (limited to 'resources/resource_transformers/tocss/scss/client.go')
-rw-r--r-- | resources/resource_transformers/tocss/scss/client.go | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/resources/resource_transformers/tocss/scss/client.go b/resources/resource_transformers/tocss/scss/client.go new file mode 100644 index 000000000..41ff67433 --- /dev/null +++ b/resources/resource_transformers/tocss/scss/client.go @@ -0,0 +1,111 @@ +// Copyright 2018 The Hugo Authors. All rights reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package scss + +import ( + "github.com/bep/go-tocss/scss" + "github.com/gohugoio/hugo/helpers" + "github.com/gohugoio/hugo/hugolib/filesystems" + "github.com/gohugoio/hugo/resources" + "github.com/gohugoio/hugo/resources/resource" + + "github.com/mitchellh/mapstructure" +) + +type Client struct { + rs *resources.Spec + sfs *filesystems.SourceFilesystem + workFs *filesystems.SourceFilesystem +} + +func New(fs *filesystems.SourceFilesystem, rs *resources.Spec) (*Client, error) { + return &Client{sfs: fs, workFs: rs.BaseFs.Work, rs: rs}, nil +} + +type Options struct { + + // Hugo, will by default, just replace the extension of the source + // to .css, e.g. "scss/main.scss" becomes "scss/main.css". You can + // control this by setting this, e.g. "styles/main.css" will create + // a Resource with that as a base for RelPermalink etc. + TargetPath string + + // Hugo automatically adds the entry directories (where the main.scss lives) + // for project and themes to the list of include paths sent to LibSASS. + // Any paths set in this setting will be appended. Note that these will be + // treated as relative to the working dir, i.e. no include paths outside the + // project/themes. + IncludePaths []string + + // Default is nested. + // One of nested, expanded, compact, compressed. + OutputStyle string + + // Precision of floating point math. + Precision int + + // When enabled, Hugo will generate a source map. + EnableSourceMap bool +} + +type options struct { + // The options we receive from the end user. + from Options + + // The options we send to the SCSS library. + to scss.Options +} + +func (c *Client) ToCSS(res resource.Resource, opts Options) (resource.Resource, error) { + internalOptions := options{ + from: opts, + } + + // Transfer values from client. + internalOptions.to.Precision = opts.Precision + internalOptions.to.OutputStyle = scss.OutputStyleFromString(opts.OutputStyle) + + if internalOptions.to.Precision == 0 { + // bootstrap-sass requires 8 digits precision. The libsass default is 5. + // https://github.com/twbs/bootstrap-sass/blob/master/README.md#sass-number-precision + internalOptions.to.Precision = 8 + } + + return c.rs.Transform( + res, + &toCSSTransformation{c: c, options: internalOptions}, + ) +} + +type toCSSTransformation struct { + c *Client + options options +} + +func (t *toCSSTransformation) Key() resources.ResourceTransformationKey { + return resources.NewResourceTransformationKey("tocss", t.options.from) +} + +func DecodeOptions(m map[string]interface{}) (opts Options, err error) { + if m == nil { + return + } + err = mapstructure.WeakDecode(m, &opts) + + if opts.TargetPath != "" { + opts.TargetPath = helpers.ToSlashTrimLeading(opts.TargetPath) + } + + return +} |