| #!/usr/bin/env luajit |
| |
| local ffi = require("ffi") |
| |
| cmark = ffi.load("libcmark") |
| |
| ffi.cdef[[ |
| |
| char *cmark_markdown_to_html(const char *text, int len); |
| typedef enum { |
| /* Block */ |
| CMARK_NODE_DOCUMENT, |
| CMARK_NODE_BLOCK_QUOTE, |
| CMARK_NODE_LIST, |
| CMARK_NODE_LIST_ITEM, |
| CMARK_NODE_CODE_BLOCK, |
| CMARK_NODE_HTML, |
| CMARK_NODE_PARAGRAPH, |
| CMARK_NODE_HEADER, |
| CMARK_NODE_HRULE, |
| CMARK_NODE_REFERENCE_DEF, |
| |
| CMARK_NODE_FIRST_BLOCK = CMARK_NODE_DOCUMENT, |
| CMARK_NODE_LAST_BLOCK = CMARK_NODE_REFERENCE_DEF, |
| |
| /* Inline */ |
| CMARK_NODE_TEXT, |
| CMARK_NODE_SOFTBREAK, |
| CMARK_NODE_LINEBREAK, |
| CMARK_NODE_INLINE_CODE, |
| CMARK_NODE_INLINE_HTML, |
| CMARK_NODE_EMPH, |
| CMARK_NODE_STRONG, |
| CMARK_NODE_LINK, |
| CMARK_NODE_IMAGE, |
| |
| CMARK_NODE_FIRST_INLINE = CMARK_NODE_TEXT, |
| CMARK_NODE_LAST_INLINE = CMARK_NODE_IMAGE, |
| } cmark_node_type; |
| |
| typedef enum { |
| CMARK_NO_LIST, |
| CMARK_BULLET_LIST, |
| CMARK_ORDERED_LIST |
| } cmark_list_type; |
| |
| typedef enum { |
| CMARK_PERIOD_DELIM, |
| CMARK_PAREN_DELIM |
| } cmark_delim_type; |
| |
| typedef struct cmark_node cmark_node; |
| typedef struct cmark_parser cmark_parser; |
| |
| cmark_node* cmark_node_new(cmark_node_type type); |
| |
| void |
| cmark_node_free(cmark_node *node); |
| |
| cmark_node* cmark_node_next(cmark_node *node); |
| |
| cmark_node* cmark_node_previous(cmark_node *node); |
| |
| cmark_node* cmark_node_parent(cmark_node *node); |
| |
| cmark_node* cmark_node_first_child(cmark_node *node); |
| |
| cmark_node* cmark_node_last_child(cmark_node *node); |
| |
| cmark_node_type cmark_node_get_type(cmark_node *node); |
| |
| const char* cmark_node_get_string_content(cmark_node *node); |
| |
| int cmark_node_set_string_content(cmark_node *node, const char *content); |
| |
| int cmark_node_get_header_level(cmark_node *node); |
| |
| int cmark_node_set_header_level(cmark_node *node, int level); |
| |
| cmark_list_type cmark_node_get_list_type(cmark_node *node); |
| |
| int cmark_node_set_list_type(cmark_node *node, cmark_list_type type); |
| |
| int cmark_node_get_list_start(cmark_node *node); |
| |
| int cmark_node_set_list_start(cmark_node *node, int start); |
| |
| int cmark_node_get_list_tight(cmark_node *node); |
| |
| int cmark_node_set_list_tight(cmark_node *node, int tight); |
| |
| const char* cmark_node_get_fence_info(cmark_node *node); |
| |
| int cmark_node_set_fence_info(cmark_node *node, const char *info); |
| |
| const char* cmark_node_get_url(cmark_node *node); |
| |
| int cmark_node_set_url(cmark_node *node, const char *url); |
| |
| const char* cmark_node_get_title(cmark_node *node); |
| |
| int cmark_node_set_title(cmark_node *node, const char *title); |
| |
| int cmark_node_get_start_line(cmark_node *node); |
| |
| int cmark_node_get_start_column(cmark_node *node); |
| |
| int cmark_node_get_end_line(cmark_node *node); |
| |
| void cmark_node_unlink(cmark_node *node); |
| |
| int cmark_node_insert_before(cmark_node *node, cmark_node *sibling); |
| |
| int cmark_node_insert_after(cmark_node *node, cmark_node *sibling); |
| |
| int cmark_node_prepend_child(cmark_node *node, cmark_node *child); |
| |
| int cmark_node_append_child(cmark_node *node, cmark_node *child); |
| |
| cmark_parser *cmark_parser_new(); |
| |
| void cmark_parser_free(cmark_parser *parser); |
| |
| cmark_node *cmark_parser_finish(cmark_parser *parser); |
| |
| void cmark_parser_feed(cmark_parser *parser, const char *buffer, size_t len); |
| |
| cmark_node *cmark_parse_document(const char *buffer, size_t len); |
| |
| char *cmark_render_ast(cmark_node *root); |
| |
| char *cmark_render_html(cmark_node *root); |
| |
| ]] |
| |
| local inp = io.read("*all") |
| local doc = cmark.cmark_parse_document(inp, string.len(inp)) |
| |
| local cur = doc |
| local next |
| local child |
| |
| local walk = function(action) |
| level = 0 |
| while cur ~= nil do |
| action(cur, level) |
| child = cmark.cmark_node_first_child(cur) |
| if child == nil then |
| next = cmark.cmark_node_next(cur) |
| while next == nil do |
| cur = cmark.cmark_node_parent(cur) |
| level = level - 1 |
| if cur == nil then |
| break |
| else |
| next = cmark.cmark_node_next(cur) |
| end |
| end |
| cur = next |
| else |
| level = level + 1 |
| cur = child |
| end |
| end |
| end |
| |
| local type_table = { |
| 'BLOCK_QUOTE', |
| 'LIST', |
| 'LIST_ITEM', |
| 'CODE_BLOCK', |
| 'HTML', |
| 'PARAGRAPH', |
| 'HEADER', |
| 'HRULE', |
| 'REFERENCE_DEF', |
| 'TEXT', |
| 'SOFTBREAK', |
| 'LINEBREAK', |
| 'INLINE_CODE', |
| 'INLINE_HTML', |
| 'EMPH', |
| 'STRONG', |
| 'LINK', |
| 'IMAGE', |
| } |
| type_table[0] = 'DOCUMENT' |
| |
| local function print_type(node, level) |
| local t = tonumber(cmark.cmark_node_get_type(node)) |
| io.write(string.rep(' ', level) .. type_table[t]) |
| if t == cmark.CMARK_NODE_TEXT then |
| io.write(' ' .. ffi.string(cmark.cmark_node_get_string_content(node))) |
| end |
| io.write('\n') |
| end |
| |
| walk(print_type) |
| |
| -- local html = ffi.string(cmark.cmark_render_html(doc)) |
| -- print(html) |