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package typdown
// #cgo LDFLAGS: -L${SRCDIR}/zig-out/lib -ltypdown
// #include <stdlib.h>
// #include "typdown.h"
import "C"
import (
"errors"
"html/template"
"unsafe"
)
var (
codeErrors = map[uint8]error{
1: errors.New("out of memory"),
2: ErrInvalidUtf8,
3: ErrNotSupported,
4: ErrModifierNotClosed,
5: ErrInvalidTitleContent,
6: ErrIllegalPlacement,
7: ErrInvalidLink,
8: ErrInvalidImage,
9: ErrInvalidCodeBlock,
10: ErrInvalidCallout,
11: ErrInvalidMathBlock,
}
ErrInvalidUtf8 = errors.New("invalid UTF-8")
ErrNotSupported = errors.New("feature not supported")
ErrModifierNotClosed = errors.New("modifier not closed")
ErrInvalidTitleContent = errors.New("invalid title content")
ErrIllegalPlacement = errors.New("illegal placement")
ErrInvalidLink = errors.New("invalid link")
ErrInvalidImage = errors.New("invalid image")
ErrInvalidCodeBlock = errors.New("invalid code block")
ErrInvalidCallout = errors.New("invalid callout")
ErrInvalidMathBlock = errors.New("invalid math block")
)
type Document struct {
ptr unsafe.Pointer
}
func Parse(content string) (*Document, error) {
code := C.uchar(0)
conv := C.CString(content)
raw := C.typdown_parse(conv, &code)
defer C.free(unsafe.Pointer(conv))
if code > 0 {
err := codeErrors[uint8(code)]
if code == 1 {
panic(err)
}
return nil, err
}
return &Document{raw}, nil
}
func (d *Document) Close() {
C.typdown_free(d.ptr)
}
func (d *Document) RenderHTML() (template.HTML, error) {
code := C.uchar(0)
raw := C.typdown_renderHTML(d.ptr, &code)
defer C.free(unsafe.Pointer(raw))
if code > 0 {
err := codeErrors[uint8(code)]
if code == 1 {
panic(err)
}
return "", err
}
return template.HTML(C.GoString(raw)), nil
}
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