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parser: Fix issue with escaped JSON front matter

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Fixes #3682
This commit is contained in:
Bjørn Erik Pedersen 2017-07-08 10:56:56 +02:00
parent e0cf2e05bb
commit 84db6c74a0
2 changed files with 10 additions and 9 deletions
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18
parser/page.go
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@ -300,12 +300,12 @@ func determineDelims(firstLine []byte) (left, right []byte) {
// function. // function.
func extractFrontMatterDelims(r *bufio.Reader, left, right []byte) (fm []byte, err error) { func extractFrontMatterDelims(r *bufio.Reader, left, right []byte) (fm []byte, err error) {
var ( var (
c byte c byte
buf bytes.Buffer buf bytes.Buffer
level int level int
sameDelim = bytes.Equal(left, right) sameDelim = bytes.Equal(left, right)
inQuote bool inQuote bool
escaped bool escapeState int
) )
// Frontmatter must start with a delimiter. To check it first, // Frontmatter must start with a delimiter. To check it first,
// pre-reads beginning delimiter length - 1 bytes from Reader // pre-reads beginning delimiter length - 1 bytes from Reader
@ -334,12 +334,12 @@ func extractFrontMatterDelims(r *bufio.Reader, left, right []byte) (fm []byte, e
switch c { switch c {
case '"': case '"':
if !escaped { if escapeState != 1 {
inQuote = !inQuote inQuote = !inQuote
} }
escaped = false escapeState = 0
case '\\': case '\\':
escaped = true escapeState++
case left[len(left)-1]: case left[len(left)-1]:
if sameDelim { // YAML, TOML case if sameDelim { // YAML, TOML case
if bytes.HasSuffix(buf.Bytes(), left) && (buf.Len() == len(left) || buf.Bytes()[buf.Len()-len(left)-1] == '\n') { if bytes.HasSuffix(buf.Bytes(), left) && (buf.Len() == len(left) || buf.Bytes()[buf.Len()-len(left)-1] == '\n') {

1
parser/parse_frontmatter_test.go
View file

@ -304,6 +304,7 @@ func TestExtractFrontMatterDelim(t *testing.T) {
{`{ "title": "\"{", "other": "\"{}" }`, `{ "title": "\"{", "other": "\"{}" }`, noErrExpected}, {`{ "title": "\"{", "other": "\"{}" }`, `{ "title": "\"{", "other": "\"{}" }`, noErrExpected},
{`{ "title": "\"Foo\"" }`, `{ "title": "\"Foo\"" }`, noErrExpected}, {`{ "title": "\"Foo\"" }`, `{ "title": "\"Foo\"" }`, noErrExpected},
{`{ "title": "\"Foo\"\"" }`, `{ "title": "\"Foo\"\"" }`, noErrExpected}, {`{ "title": "\"Foo\"\"" }`, `{ "title": "\"Foo\"\"" }`, noErrExpected},
{`{ "url": "http:\/\/example.com\/play\/url?id=1" }`, `{ "url": "http:\/\/example.com\/play\/url?id=1" }`, noErrExpected},
} }
for i, test := range tests { for i, test := range tests {