mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-11 08:46:16 +02:00
e7dcacbd7c
this simplifies the setup a lot, and avoids weird looking `./file.md` links showing up. it also does not show regular URLs any more. currently the command reference only has few of them, and not showing them in the offline documentation is hopefully not a big deal. instead of building more special-case solutions, clumsily preprocessing the input, or issuing verbal rules on dealing with URLs, should better be solved sustainably by not rendering relative links in `lowdown`: https://github.com/kristapsdz/lowdown/issues/105
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
#include "markdown.hh"
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#include "util.hh"
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#include "finally.hh"
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#include <sys/queue.h>
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#include <lowdown.h>
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namespace nix {
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std::string renderMarkdownToTerminal(std::string_view markdown)
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{
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int windowWidth = getWindowSize().second;
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struct lowdown_opts opts {
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.type = LOWDOWN_TERM,
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.maxdepth = 20,
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.cols = (size_t) std::max(windowWidth - 5, 60),
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.hmargin = 0,
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.vmargin = 0,
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.feat = LOWDOWN_COMMONMARK | LOWDOWN_FENCED | LOWDOWN_DEFLIST | LOWDOWN_TABLES,
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.oflags = LOWDOWN_TERM_NOLINK,
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};
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auto doc = lowdown_doc_new(&opts);
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if (!doc)
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throw Error("cannot allocate Markdown document");
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Finally freeDoc([&]() { lowdown_doc_free(doc); });
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size_t maxn = 0;
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auto node = lowdown_doc_parse(doc, &maxn, markdown.data(), markdown.size(), nullptr);
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if (!node)
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throw Error("cannot parse Markdown document");
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Finally freeNode([&]() { lowdown_node_free(node); });
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auto renderer = lowdown_term_new(&opts);
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if (!renderer)
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throw Error("cannot allocate Markdown renderer");
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Finally freeRenderer([&]() { lowdown_term_free(renderer); });
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auto buf = lowdown_buf_new(16384);
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if (!buf)
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throw Error("cannot allocate Markdown output buffer");
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Finally freeBuffer([&]() { lowdown_buf_free(buf); });
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int rndr_res = lowdown_term_rndr(buf, renderer, node);
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if (!rndr_res)
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throw Error("allocation error while rendering Markdown");
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return filterANSIEscapes(std::string(buf->data, buf->size), !shouldANSI());
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}
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}
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