mirror of
https://codeberg.org/grunfink/snac2.git
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127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
/* snac - A simple, minimalistic ActivityPub instance */
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/* copyright (c) 2022 grunfink - MIT license */
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#include "xs.h"
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#include "xs_io.h"
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#include "xs_json.h"
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#include "xs_regex.h"
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#include "snac.h"
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d_char *not_really_markdown(char *content, d_char **f_content)
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/* formats a content using some Markdown rules */
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{
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d_char *s = NULL;
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int in_pre = 0;
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int in_blq = 0;
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xs *list;
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char *p, *v;
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xs *wrk = xs_dup(content);
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/* global changes */
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{
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/* backticks */
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xs *ml = xs_regex_matchall(wrk, "`[^`]+`");
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p = ml;
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while (xs_list_iter(&p, &v)) {
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xs *s1 = xs_crop(xs_dup(v), 1, -1);
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xs *s2 = xs_fmt("<code>%s</code>", s1);
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wrk = xs_replace_i(wrk, v, s2);
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}
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}
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{
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/* double asterisks */
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xs *ml = xs_regex_matchall(wrk, "\\*\\*[^\\*]+\\*\\*");
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p = ml;
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while (xs_list_iter(&p, &v)) {
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xs *s1 = xs_crop(xs_dup(v), 2, -2);
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xs *s2 = xs_fmt("<b>%s</b>", s1);
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wrk = xs_replace_i(wrk, v, s2);
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}
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}
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{
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/* single asterisks */
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xs *ml = xs_regex_matchall(wrk, "\\*[^\\*]+\\*");
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p = ml;
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while (xs_list_iter(&p, &v)) {
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xs *s1 = xs_crop(xs_dup(v), 1, -1);
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xs *s2 = xs_fmt("<i>%s</i>", s1);
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wrk = xs_replace_i(wrk, v, s2);
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}
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}
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{
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/* urls */
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xs *ml = xs_regex_matchall(wrk, "https?:/" "/[^ ]+");
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p = ml;
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while (xs_list_iter(&p, &v)) {
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xs *s2 = xs_fmt("<a href=\"%s\">%s</a>", v, v);
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wrk = xs_replace_i(wrk, v, s2);
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}
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}
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/* now work on lines */
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p = list = xs_split(wrk, "\n");
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s = xs_str_new(NULL);
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while (xs_list_iter(&p, &v)) {
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xs *ss = xs_strip(xs_dup(v));
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if (xs_startswith(ss, "```")) {
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if (!in_pre)
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s = xs_str_cat(s, "<pre>");
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else
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s = xs_str_cat(s, "</pre>");
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in_pre = !in_pre;
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continue;
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}
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if (xs_startswith(ss, ">")) {
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/* delete the > and subsequent spaces */
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ss = xs_strip(xs_crop(ss, 1, 0));
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if (!in_blq) {
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s = xs_str_cat(s, "<blockquote>");
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in_blq = 1;
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}
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s = xs_str_cat(s, ss);
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s = xs_str_cat(s, "<br>");
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continue;
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}
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if (in_blq) {
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s = xs_str_cat(s, "</blockquote>");
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in_blq = 0;
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}
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s = xs_str_cat(s, ss);
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s = xs_str_cat(s, "<br>");
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}
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if (in_blq)
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s = xs_str_cat(s, "</blockquote>");
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if (in_pre)
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s = xs_str_cat(s, "</pre>");
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/* some beauty fixes */
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s = xs_replace_i(s, "</blockquote><br>", "</blockquote>");
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*f_content = s;
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return *f_content;
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}
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