LOWDOWN_GEMINI_RNDR(3)

NAME
lowdown_gemini_rndr - render Markdown into gemini

LIBRARY
liblowdown

SYNOPSIS
#include <sys/queue.h>
#include <stdio.h>
#include <lowdown.h>
int
lowdown_gemini_rndr(struct lowdown_buf *out, void *arg, const struct lowdown_node *n);

DESCRIPTION
Renders a node tree n created by lowdown_doc_parse(3) or lowdown_diff(3) using the gemini renderer arg as returned by lowdown_gemini_new(3). The output is written into out, which must be initialised and freed by the caller.

The caller is expected to have invoked setlocale(3) to a "UTF-8" character encoding prior to using this function, otherwise UTF-8 sequences will not be properly recognised. This is used when formatting table column widths.

RETURN VALUES
Returns zero on failure to allocate memory, non-zero on success.

EXAMPLES
The following parses b of length bsz and outputs in Gemini format.

    struct lowdown_buf *out;
    struct lowdown_doc *doc;
    struct lowdown_node *n;
    void *rndr;

    if (setlocale(LC_CTYPE, "en_US.UTF-8") == NULL)
    	err(1, NULL);
    if ((doc = lowdown_doc_new(NULL)) == NULL)
    	err(1, NULL);
    if ((n = lowdown_doc_parse(doc, NULL, b, bsz, NULL)) == NULL)
    	err(1, NULL);
    if ((out = lowdown_buf_new(256)) == NULL)
    	err(1, NULL);
    if ((rndr = lowdown_gemini_new(NULL)) == NULL)
    	err(1, NULL);
    if (!lowdown_gemini_rndr(out, rndr, n))
    	err(1, NULL);

    fwrite(out->data, 1, out->size, stdout);

    lowdown_gemini_free(rndr);
    lowdown_buf_free(out);
    lowdown_node_free(n);
    lowdown_doc_free(doc);

SEE ALSO
lowdown(3), lowdown_gemini_free(3), lowdown_gemini_new(3)

STANDARDS
The gemini “gemtext” format is documented in Project Gemini: https://geminiprotocol.net. The version at the time of writing is 0.24.1.