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gojekyll/site/build.go

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package site
import (
"fmt"
"os"
"path/filepath"
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"time"
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"github.com/osteele/gojekyll/utils"
)
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// Clean the destination. Remove files that aren't in keep_files, and resulting empty directories.
func (s *Site) Clean() error {
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// TODO PERF when called as part of build, keep files that will be re-generated
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removeFiles := func(filename string, info os.FileInfo, err error) error {
if s.config.Verbose {
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fmt.Println("rm", filename)
}
switch {
case err != nil && os.IsNotExist(err):
return nil
case err != nil:
return err
case info.IsDir():
return nil
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case s.KeepFile(utils.MustRel(s.DestDir(), filename)):
return nil
case s.config.DryRun:
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return nil
default:
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return os.Remove(filename)
}
}
if err := filepath.Walk(s.DestDir(), removeFiles); err != nil {
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return err
}
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return utils.RemoveEmptyDirectories(s.DestDir())
}
// Build cleans the destination and create files in it.
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// This sets TZ from the site config.
func (s *Site) Build() (int, error) {
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if err := s.setTimeZone(); err != nil {
return 0, err
}
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if err := s.prepareRendering(); err != nil {
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return 0, err
}
if err := s.Clean(); err != nil {
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return 0, err
}
return s.WriteFiles()
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}
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func (s *Site) setTimeZone() error {
if tz := s.config.Timezone; tz != "" {
if _, err := time.LoadLocation(tz); err != nil {
fmt.Fprintf(os.Stderr, "%s; using local time zone\n", err)
} else if err := os.Setenv("TZ", tz); err != nil {
return err
}
}
return nil
}