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parser: Fix handling of JSON front matter with escaped quotes

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Fixes #3661
This commit is contained in:
Bjørn Erik Pedersen 2017-07-03 09:00:17 +02:00
parent 34c566773a
commit e10e51a008
2 changed files with 14 additions and 2 deletions
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7
parser/page.go
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@ -305,6 +305,7 @@ func extractFrontMatterDelims(r *bufio.Reader, left, right []byte) (fm []byte, e
level int
sameDelim = bytes.Equal(left, right)
inQuote bool
escaped bool
)
// Frontmatter must start with a delimiter. To check it first,
// pre-reads beginning delimiter length - 1 bytes from Reader
@ -333,7 +334,12 @@ func extractFrontMatterDelims(r *bufio.Reader, left, right []byte) (fm []byte, e
switch c {
case '"':
if !escaped {
inQuote = !inQuote
}
escaped = false
case '\\':
escaped = true
case left[len(left)-1]:
if sameDelim { // YAML, TOML case
if bytes.HasSuffix(buf.Bytes(), left) && (buf.Len() == len(left) || buf.Bytes()[buf.Len()-len(left)-1] == '\n') {
@ -396,6 +402,7 @@ func extractFrontMatterDelims(r *bufio.Reader, left, right []byte) (fm []byte, e
return buf.Bytes(), nil
}
}
}

5
parser/parse_frontmatter_test.go
View file

@ -299,6 +299,11 @@ func TestExtractFrontMatterDelim(t *testing.T) {
// Issue #3511
{`{ "title": "{" }`, `{ "title": "{" }`, noErrExpected},
{`{ "title": "{}" }`, `{ "title": "{}" }`, noErrExpected},
// Issue #3661
{`{ "title": "\"" }`, `{ "title": "\"" }`, noErrExpected},
{`{ "title": "\"{", "other": "\"{}" }`, `{ "title": "\"{", "other": "\"{}" }`, noErrExpected},
{`{ "title": "\"Foo\"" }`, `{ "title": "\"Foo\"" }`, noErrExpected},
{`{ "title": "\"Foo\"\"" }`, `{ "title": "\"Foo\"\"" }`, noErrExpected},
}
for i, test := range tests {