1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
// 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 hugolib
import (
"bytes"
"io"
"github.com/gohugoio/hugo/helpers"
errors "github.com/pkg/errors"
bp "github.com/gohugoio/hugo/bufferpool"
"github.com/gohugoio/hugo/common/herrors"
"github.com/gohugoio/hugo/common/text"
"github.com/gohugoio/hugo/parser/metadecoders"
"github.com/gohugoio/hugo/parser/pageparser"
)
var (
internalSummaryDividerBase = "HUGOMORE42"
internalSummaryDividerBaseBytes = []byte(internalSummaryDividerBase)
internalSummaryDividerPre = []byte("\n\n" + internalSummaryDividerBase + "\n\n")
)
// The content related items on a Page.
type pageContent struct {
renderable bool
// workContent is a copy of rawContent that may be mutated during site build.
workContent []byte
shortcodeState *shortcodeHandler
source rawPageContent
}
type rawPageContent struct {
hasSummaryDivider bool
// The AST of the parsed page. Contains information about:
// shortcodes, front matter, summary indicators.
parsed pageparser.Result
// Returns the position in bytes after any front matter.
posMainContent int
}
// TODO(bep) lazy consolidate
func (p *Page) mapContent() error {
p.shortcodeState = newShortcodeHandler(p)
s := p.shortcodeState
p.renderable = true
p.source.posMainContent = -1
result := bp.GetBuffer()
defer bp.PutBuffer(result)
iter := p.source.parsed.Iterator()
fail := func(err error, i pageparser.Item) error {
return p.parseError(err, iter.Input(), i.Pos)
}
// the parser is guaranteed to return items in proper order or fail, so …
// … it's safe to keep some "global" state
var currShortcode shortcode
var ordinal int
Loop:
for {
it := iter.Next()
switch {
case it.Type == pageparser.TypeIgnore:
case it.Type == pageparser.TypeHTMLStart:
// This is HTML without front matter. It can still have shortcodes.
p.renderable = false
result.Write(it.Val)
case it.IsFrontMatter():
f := metadecoders.FormatFromFrontMatterType(it.Type)
m, err := metadecoders.Default.UnmarshalToMap(it.Val, f)
if err != nil {
if fe, ok := err.(herrors.FileError); ok {
return herrors.ToFileErrorWithOffset(fe, iter.LineNumber()-1)
} else {
return err
}
}
if err := p.updateMetaData(m); err != nil {
return err
}
next := iter.Peek()
if !next.IsDone() {
p.source.posMainContent = next.Pos
}
if !p.shouldBuild() {
// Nothing more to do.
return nil
}
case it.Type == pageparser.TypeLeadSummaryDivider:
result.Write(internalSummaryDividerPre)
p.source.hasSummaryDivider = true
// Need to determine if the page is truncated.
f := func(item pageparser.Item) bool {
if item.IsNonWhitespace() {
p.truncated = true
// Done
return false
}
return true
}
iter.PeekWalk(f)
// Handle shortcode
case it.IsLeftShortcodeDelim():
// let extractShortcode handle left delim (will do so recursively)
iter.Backup()
currShortcode, err := s.extractShortcode(ordinal, iter, p)
if currShortcode.name != "" {
s.nameSet[currShortcode.name] = true
}
if err != nil {
return fail(errors.Wrap(err, "failed to extract shortcode"), it)
}
if currShortcode.params == nil {
currShortcode.params = make([]string, 0)
}
placeHolder := s.createShortcodePlaceholder()
result.WriteString(placeHolder)
ordinal++
s.shortcodes.Add(placeHolder, currShortcode)
case it.Type == pageparser.TypeEmoji:
if emoji := helpers.Emoji(it.ValStr()); emoji != nil {
result.Write(emoji)
} else {
result.Write(it.Val)
}
case it.IsEOF():
break Loop
case it.IsError():
err := fail(errors.WithStack(errors.New(it.ValStr())), it)
currShortcode.err = err
return err
default:
result.Write(it.Val)
}
}
resultBytes := make([]byte, result.Len())
copy(resultBytes, result.Bytes())
p.workContent = resultBytes
return nil
}
func (p *Page) parse(reader io.Reader) error {
parseResult, err := pageparser.Parse(
reader,
pageparser.Config{EnableEmoji: p.s.Cfg.GetBool("enableEmoji")},
)
if err != nil {
return err
}
p.source = rawPageContent{
parsed: parseResult,
}
p.lang = p.File.Lang()
if p.s != nil && p.s.owner != nil {
gi, enabled := p.s.owner.gitInfo.forPage(p)
if gi != nil {
p.GitInfo = gi
} else if enabled {
p.s.Log.INFO.Printf("Failed to find GitInfo for page %q", p.Path())
}
}
return nil
}
func (p *Page) parseError(err error, input []byte, offset int) error {
if herrors.UnwrapFileError(err) != nil {
// Use the most specific location.
return err
}
pos := p.posFromInput(input, offset)
return herrors.NewFileError("md", -1, pos.LineNumber, pos.ColumnNumber, err)
}
func (p *Page) posFromInput(input []byte, offset int) text.Position {
lf := []byte("\n")
input = input[:offset]
lineNumber := bytes.Count(input, lf) + 1
endOfLastLine := bytes.LastIndex(input, lf)
return text.Position{
Filename: p.pathOrTitle(),
LineNumber: lineNumber,
ColumnNumber: offset - endOfLastLine,
Offset: offset,
}
}
func (p *Page) posFromPage(offset int) text.Position {
return p.posFromInput(p.source.parsed.Input(), offset)
}
|
