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Added support for markdown-like ![alt text](image url).

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default 2024-07-19 07:24:28 +02:00
parent 6e3b621f7b
commit 5f6a42453c
2 changed files with 36 additions and 0 deletions
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5
doc/snac.5
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@ -43,6 +43,11 @@ int main(int argc, char *argv[])
Standalone URLs are converted to links. Also, from version 2.54,
markdown-style links in the form of [link label](url) are also
supported.
.It attached images
Standalone URLs for which the final extension is recognized as an
image (.jpg, .gif, .png, etc), are converted to ActivityPub image
attachments. Also, from version 2.57, markdown-style image links
in the form of ![alt text](image url) are also supported.
.It line separators
Horizonal rules can be inserted by typing three minus symbols
alone in a line.

31
format.c
View File

@ -91,6 +91,7 @@ static xs_str *format_line(const char *line, xs_list **attach)
"`[^`]+`" "|"
"~~[^~]+~~" "|"
"\\*\\*?\\*?[^\\*]+\\*?\\*?\\*" "|"
"!\\[[^]]+\\]\\([^\\)]+\\)" "|"
"\\[[^]]+\\]\\([^\\)]+\\)" "|"
"https?:/" "/[^[:space:]]+"
")");
@ -169,6 +170,36 @@ static xs_str *format_line(const char *line, xs_list **attach)
else
s = xs_str_cat(s, v);
}
else
if (*v == '!') {
/* markdown-like images ![alt text](url to image) */
xs *w = xs_strip_chars_i(xs_replace(v, "#", "#"), "![)");
xs *l = xs_split_n(w, "](", 1);
if (xs_list_len(l) == 2) {
const char *alt_text = xs_list_get(l, 0);
const char *img_url = xs_list_get(l, 1);
const char *mime = xs_mime_by_ext(img_url);
if (attach != NULL && xs_startswith(mime, "image/")) {
xs *d = xs_dict_new();
d = xs_dict_append(d, "mediaType", mime);
d = xs_dict_append(d, "url", img_url);
d = xs_dict_append(d, "name", alt_text);
d = xs_dict_append(d, "type", "Image");
*attach = xs_list_append(*attach, d);
}
else {
xs *link = xs_fmt("<a href=\"%s\">%s</a>", img_url, alt_text);
s = xs_str_cat(s, link);
}
}
else
s = xs_str_cat(s, v);
}
else
s = xs_str_cat(s, v);
}