aniani/elinks
1
0
Fork 0
mirror of https://github.com/rkd77/elinks.git synced 2024-09-29 03:17:53 -04:00
Code
master
elinks/src/document/gemini/renderer.c

211 lines
5.1 KiB
C
Raw Permalink Normal View History

[gemini] text/gemini
2021-07-01 14:18:29 -04:00
/* Plain text document renderer */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "elinks.h"
#include "bookmarks/bookmarks.h"
#include "cache/cache.h"
#include "config/options.h"
#include "document/docdata.h"
#include "document/document.h"
#include "document/format.h"
#include "document/options.h"
#include "document/gemini/renderer.h"
#include "document/html/renderer.h"
#include "document/renderer.h"
#include "globhist/globhist.h"
#include "intl/charsets.h"
#include "protocol/protocol.h"
#include "protocol/uri.h"
#include "terminal/color.h"
#include "terminal/draw.h"
#include "util/color.h"
[gemini] add_html_to_string
2021-07-02 09:11:37 -04:00
#include "util/conv.h"
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
#include "util/error.h"
#include "util/memory.h"
#include "util/string.h"
#include <stdio.h>
static void
convert_single_line(struct string *ret, struct string *line)
{
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
if (line->length >= 3 && !strncmp(line->source, "###", 3)) {
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "<h3>");
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
add_html_to_string(ret, line->source + 3, line->length - 3);
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "</h3>");
return;
}
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
if (line->length >= 2 && !strncmp(line->source, "##", 2)) {
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "<h2>");
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
add_html_to_string(ret, line->source + 2, line->length - 2);
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "</h2>");
return;
}
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
if (line->length >= 1 && !strncmp(line->source, "#", 1)) {
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "<h1>");
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
add_html_to_string(ret, line->source + 1, line->length - 1);
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "</h1>");
return;
}
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
if (line->length >= 2 && !strncmp(line->source, "*", 1)) {
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "<li>");
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
add_html_to_string(ret, line->source + 1, line->length - 1);
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "</li>");
return;
}
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
if (line->length >= 1 && !strncmp(line->source, ">", 1)) {
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "<blockquote>");
[text/gemini] Do not expect space
2021-07-02 16:13:09 -04:00
add_html_to_string(ret, line->source + 1, line->length - 1);
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "</blockquote>");
return;
}
if (line->length >= 2 && !strncmp(line->source, "=>", 2)) {
int i = 2;
[gemini] One link per line. Fix for links without descriptions.
2021-07-01 15:01:02 -04:00
int href;
int inner;
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "<a href=\"");
for (; i < line->length; ++i) {
if (line->source[i] != ' ' && line->source[i] != '\t') {
break;
};
}
[gemini] One link per line. Fix for links without descriptions.
2021-07-01 15:01:02 -04:00
href = i;
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
for (; i < line->length; ++i) {
if (line->source[i] == ' ' || line->source[i] == '\t') {
break;
}
}
[gemini] One link per line. Fix for links without descriptions.
2021-07-01 15:01:02 -04:00
add_bytes_to_string(ret, line->source + href, i - href);
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "\">");
[gemini] One link per line. Fix for links without descriptions.
2021-07-01 15:01:02 -04:00
inner = i;
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
for (; i < line->length; ++i) {
if (line->source[i] != ' ' && line->source[i] != '\t') {
break;
};
}
[gemini] One link per line. Fix for links without descriptions.
2021-07-01 15:01:02 -04:00
if (inner == i) {
add_bytes_to_string(ret, line->source + href, i - href);
} else {
[gemini] add_html_to_string
2021-07-02 09:11:37 -04:00
add_html_to_string(ret, line->source + i, line->length - i);
[gemini] One link per line. Fix for links without descriptions.
2021-07-01 15:01:02 -04:00
}
add_to_string(ret, "</a><br/>");
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
return;
}
[gemini] add_html_to_string
2021-07-02 09:11:37 -04:00
add_html_to_string(ret, line->source, line->length);
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_to_string(ret, "<br/>");
}
void
render_gemini_document(struct cache_entry *cached, struct document *document,
struct string *buffer)
{
int preformat = 0;
int in_list = 0;
int i = 0;
int begin = 0;
struct string pre_start = INIT_STRING("<pre>", 5);
struct string pre_end = INIT_STRING("</pre>", 6);
struct string gem_pre = INIT_STRING("```", 3);
struct string html;
char *uristring;
char *head = empty_string_or_(cached->head);
(void)get_convert_table(head, document->options.cp,
document->options.assume_cp,
&document->cp,
&document->cp_status,
document->options.hard_assume);
[string] Check for NULL
2022-01-04 10:40:28 -05:00
if (!init_string(&html)) {
return;
}
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
uristring = get_uri_string(document->uri, URI_PUBLIC);
add_to_string(&html, "<html><head><meta charset=\"utf-8\"/><base href=\"");
add_to_string(&html, uristring);
add_to_string(&html, "\"/></head><body>");
mem_free_if(uristring);
[gemini] strncmp for readability
2021-07-02 09:21:39 -04:00
while (i < buffer->length) {
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
for (i = begin; i < buffer->length; ++i) {
if (buffer->source[i] == 13 || buffer->source[i] == 10) break;
}
[gemini] Use paragraph tags on gemtext empty lines This patch makes paragraphs separated by an empty new line appear after an empty new line when rendered in elinks. Previously, for a gemtext source that looks like this: First para Second line Second para It renders like this: First para Second line Second para After this patch, they now render like this: First para Second line Second para Unfortunately this also adds a </p> to the start of the HTML, as well as a <p> at the end, both redundant; but since the HTML is parsed and rendered later on, it does not seem to alter how the document would look. </p><p> First para <br> Second line </p><p> Second para </p><p> I could possibly add a `first_paragraph` variable and a `i != buffer->length` check to remove the first </p> and last <p> in the HTML, making the HTML source "prettier". But I don't believe that would be too beneficial, considering the performance tradeoff in executing these two extra checks for each empty new line encountered. For testing please see: gemini://hedy.tilde.cafe/tmp/paragraphs.gmi
2023-09-28 02:19:41 -04:00
if (begin == i) {
add_to_string(&html, "</p><p>");
}
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
if (begin < i) {
int len = i - begin;
struct string line;
line.source = buffer->source + begin;
line.length = len;
struct string *repl;
[gemini] strncmp for readability
2021-07-02 09:21:39 -04:00
if (len >= 3 && (!strncmp(line.source, "```", 3)
|| !strncmp(line.source + len - 3, "```", 3))) {
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
preformat = !preformat;
repl = preformat ? &pre_start : &pre_end;
[string] string_replace -> el_string_replace
2023-07-01 13:40:24 -04:00
el_string_replace(&html, &line, &gem_pre, repl);
[gmi] Add a new line after the first line of "preformatted" text. Refs #265
2023-09-12 04:23:26 -04:00
if (preformat) {
add_char_to_string(&html, '\n');
}
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
} else if (preformat) {
add_string_to_string(&html, &line);
[gemini] Changes to see labirynth
2021-07-03 08:34:16 -04:00
add_char_to_string(&html, '\n');
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
} else {
struct string html_line;
[string] Check for NULL
2022-01-04 10:40:28 -05:00
if (init_string(&html_line)) {
convert_single_line(&html_line, &line);
if (html_line.length >= 4
&& !strncmp(html_line.source, "<li>", 4)) {
if (!in_list) {
in_list = 1;
add_to_string(&html, "<ul>\n");
add_string_to_string(&html, &html_line);
[gemini] Missing LIs. Refs #242
2023-06-27 10:06:58 -04:00
} else {
add_string_to_string(&html, &html_line);
[string] Check for NULL
2022-01-04 10:40:28 -05:00
}
} else if (in_list) {
in_list = 0;
add_to_string(&html, "</ul>\n");
add_string_to_string(&html, &html_line);
} else {
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
add_string_to_string(&html, &html_line);
}
[string] Check for NULL
2022-01-04 10:40:28 -05:00
done_string(&html_line);
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
}
}
}
begin = i + 1;
[gemini] Changes to see labirynth
2021-07-03 08:34:16 -04:00
if (!preformat) add_to_string(&html, "\n");
[gemini] text/gemini
2021-07-01 14:18:29 -04:00
}
add_to_string(&html, "</body></html>");
render_html_document(cached, document, &html);
}
Copy Permalink