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author | Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com> | 2022-09-14 11:58:45 +0200 |
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committer | Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com> | 2022-09-14 19:09:20 +0200 |
commit | 74daca6b3050d96cd3a08b13f45de24edb450163 (patch) | |
tree | d740f7e7174c4685dae8cb262a790300b005be76 /common | |
parent | 1fd4c562afd467f246c632e9f3fed0a1f350d8dc (diff) |
Support PostProcess for all file types
Not just HTML.
Fixes #10269
Diffstat (limited to 'common')
-rw-r--r-- | common/hugio/hasBytesWriter.go | 57 | ||||
-rw-r--r-- | common/hugio/hasBytesWriter_test.go | 64 |
2 files changed, 121 insertions, 0 deletions
diff --git a/common/hugio/hasBytesWriter.go b/common/hugio/hasBytesWriter.go new file mode 100644 index 000000000..7b7d7a5d7 --- /dev/null +++ b/common/hugio/hasBytesWriter.go @@ -0,0 +1,57 @@ +// Copyright 2022 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 hugio + +import ( + "bytes" +) + +// HasBytesWriter is a writer that will set Match to true if the given pattern +// is found in the stream. +type HasBytesWriter struct { + Match bool + Pattern []byte + + i int + done bool + buff []byte +} + +func (h *HasBytesWriter) Write(p []byte) (n int, err error) { + if h.done { + return len(p), nil + } + + if len(h.buff) == 0 { + h.buff = make([]byte, len(h.Pattern)*2) + } + + for i := range p { + h.buff[h.i] = p[i] + h.i++ + if h.i == len(h.buff) { + // Shift left. + copy(h.buff, h.buff[len(h.buff)/2:]) + h.i = len(h.buff) / 2 + } + + if bytes.Contains(h.buff, h.Pattern) { + h.Match = true + h.done = true + return len(p), nil + } + } + + return len(p), nil +} diff --git a/common/hugio/hasBytesWriter_test.go b/common/hugio/hasBytesWriter_test.go new file mode 100644 index 000000000..b1b8011d5 --- /dev/null +++ b/common/hugio/hasBytesWriter_test.go @@ -0,0 +1,64 @@ +// Copyright 2022 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 hugio + +import ( + "bytes" + "fmt" + "io" + "math/rand" + "strings" + "testing" + "time" + + qt "github.com/frankban/quicktest" +) + +func TestHasBytesWriter(t *testing.T) { + r := rand.New(rand.NewSource(time.Now().UnixNano())) + + c := qt.New((t)) + + neww := func() (*HasBytesWriter, io.Writer) { + var b bytes.Buffer + + h := &HasBytesWriter{ + Pattern: []byte("__foo"), + } + return h, io.MultiWriter(&b, h) + } + + rndStr := func() string { + return strings.Repeat("ab cfo", r.Intn(33)) + } + + for i := 0; i < 22; i++ { + h, w := neww() + fmt.Fprintf(w, rndStr()+"abc __foobar"+rndStr()) + c.Assert(h.Match, qt.Equals, true) + + h, w = neww() + fmt.Fprintf(w, rndStr()+"abc __f") + fmt.Fprintf(w, "oo bar"+rndStr()) + c.Assert(h.Match, qt.Equals, true) + + h, w = neww() + fmt.Fprintf(w, rndStr()+"abc __moo bar") + c.Assert(h.Match, qt.Equals, false) + } + + h, w := neww() + fmt.Fprintf(w, "__foo") + c.Assert(h.Match, qt.Equals, true) +} |