NAME

     lowdown_gemini_rndr — render Markdown into gemini

LIBRARY

     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 format is documented in Project Gemini:
     https://gemini.circumlunar.space/docs/specification.html. The version at the time of writing
     is 0.14.3.