@@ -6,118 +6,176 @@ pub fn translate(a: Allocator, blob: []const u8) ![]u8 {
var idx: usize = 0;
var backtick: bool = false;
var esc = true;
while (idx < blob.len) : (idx += 1) {
sw: switch (blob[idx]) {
'\n' => {
newline +|= 1;
if (newline % 2 == 0) {
try output.appendSlice("<br>");
}
try output.append('\n');
},
'#' => |c| {
if (newline == 0) {
try output.append(c);
continue;
}
newline = 0;
var hlvl: u8 = 0;
while (idx < blob.len) : (idx += 1) {
switch (blob[idx]) {
'#' => hlvl +|= 1,
else => break,
}
}
const tag = switch (hlvl) {
1 => "<h1>",
2 => "<h2>",
3 => "<h3>",
4 => "<h4>",
5 => "<h5>",
6 => "<h6>",
else => t: {
for (0..hlvl) |_| try output.append('#');
break :t "";
},
};
try output.appendSlice(tag);
while (idx < blob.len and blob[idx] == ' ') idx += 1;
while (idx < blob.len and blob[idx] != '\n') : (idx += 1) {
try output.append(blob[idx]);
}
if (idx != blob.len) idx -= 1;
if (tag.len > 1) {
try output.appendSlice("</");
try output.appendSlice(tag[1..]);
}
},
'`' => {
if (blob.len > idx + 7) {
if (blob[idx + 1] == '`' and blob[idx + 2] == '`') {
// TODO does the closing ``` need a \n prefix
if (std.mem.indexOfPos(u8, blob, idx + 3, "\n```")) |i| {
var highlighted: ?[]const u8 = null;
defer if (highlighted) |hl| a.free(hl);
if (blob[idx + 3] >= 'a' and blob[idx + 3] <= 'z') {
var lang_len = idx + 3;
while (lang_len < i and blob[lang_len] >= 'a' and blob[lang_len] <= 'z') {
lang_len += 1;
}
if (parseCodeblockFlavor(blob[idx + 3 .. lang_len])) |flavor| {
highlighted = try syntax.highlight(a, flavor, blob[lang_len..i]);
}
}
try output.appendSlice("<div class=\"codeblock\">");
idx += 3;
try output.appendSlice(highlighted orelse blob[idx..i]);
try output.appendSlice("\n</div>");
idx = i + 4;
if (idx >= blob.len) break :sw;
continue :sw blob[idx];
}
}
}
if (backtick) {
backtick = false;
try output.appendSlice("</span>");
} else {
backtick = true;
try output.appendSlice("<span class=\"coderef\">");
}
},
'\\' => {
if (idx + 1 >= blob.len) {
try output.append('\\');
break;
var open_list = false;
var indent: usize = 0;
sw: switch (blob[idx]) {
'\n' => {
indent = 0;
newline +|= 1;
if (newline % 2 == 0) {
if (open_list) {
try output.appendSlice("</ul>");
open_list = false;
idx += 1;
if (idx < blob.len) continue :sw blob[idx];
}
try output.appendSlice("<br>");
}
try output.append('\n');
idx += 1;
if (idx < blob.len) continue :sw blob[idx];
},
'#' => |c| {
if (newline == 0) {
try output.append(c);
idx += 1;
if (idx < blob.len) continue :sw blob[idx];
}
newline = 0;
var hlvl: u8 = 0;
while (idx < blob.len) : (idx += 1) {
switch (blob[idx]) {
'\\' => {
try output.append('\\');
idx += 1;
},
'`' => |c| {
try output.append(c);
idx += 1;
},
else => {},
'#' => hlvl +|= 1,
else => break,
}
continue :sw blob[idx];
},
else => |c| {
newline = 0;
esc = false;
if (abx.Html.clean(c)) |clean| {
try output.appendSlice(clean);
} else {
}
const tag = switch (hlvl) {
1 => "<h1>",
2 => "<h2>",
3 => "<h3>",
4 => "<h4>",
5 => "<h5>",
6 => "<h6>",
else => t: {
for (0..hlvl) |_| try output.append('#');
break :t "";
},
};
while (idx < blob.len and blob[idx] == ' ') idx += 1;
try output.appendSlice(tag);
if (indexOfScalarPos(u8, blob, idx, '\n')) |eol| {
var i = eol;
while (blob[i] == '#' or blob[i] == ' ' or blob[i] == '\n') i -= 1;
try output.appendSlice(blob[idx .. i + 1]);
idx = eol;
} else {
try output.appendSlice(blob[idx..]);
idx = blob.len - 1;
}
if (tag.len > 1) {
try output.appendSlice("</");
try output.appendSlice(tag[1..]);
}
if (blob[idx] != '\n') idx += 1;
if (idx < blob.len) continue :sw blob[idx];
},
'`' => {
if (blob.len > idx + 7) {
if (blob[idx + 1] == '`' and blob[idx + 2] == '`') {
// TODO does the closing ``` need a \n prefix
if (std.mem.indexOfPos(u8, blob, idx + 3, "\n```")) |i| {
var highlighted: ?[]const u8 = null;
defer if (highlighted) |hl| a.free(hl);
if (blob[idx + 3] >= 'a' and blob[idx + 3] <= 'z') {
var lang_len = idx + 3;
while (lang_len < i and blob[lang_len] >= 'a' and blob[lang_len] <= 'z') {
lang_len += 1;
}
if (parseCodeblockFlavor(blob[idx + 3 .. lang_len])) |flavor| {
highlighted = try syntax.highlight(a, flavor, blob[lang_len..i]);
}
}
try output.appendSlice("<div class=\"codeblock\">");
idx += 3;
try output.appendSlice(highlighted orelse blob[idx..i]);
try output.appendSlice("\n</div>");
idx = i + 4;
if (idx < blob.len) continue :sw blob[idx];
break :sw;
}
}
}
if (backtick) {
backtick = false;
try output.appendSlice("</span>");
} else {
backtick = true;
try output.appendSlice("<span class=\"coderef\">");
}
idx += 1;
if (idx < blob.len) continue :sw blob[idx];
},
'\\' => {
if (idx + 1 >= blob.len) {
try output.append('\\');
idx += 1;
if (idx < blob.len) continue :sw blob[idx];
}
idx += 1;
switch (blob[idx]) {
'\\' => {
try output.append('\\');
idx += 1;
},
'`' => |c| {
try output.append(c);
idx += 1;
},
else => {},
}
if (idx < blob.len) continue :sw blob[idx];
},
'-', '+', '*' => |c| {
if ((newline > 0 or indent > 0) and idx + 1 < blob.len and blob[idx + 1] == ' ') {
if (!open_list) {
try output.appendSlice("<ul>");
open_list = true;
}
},
}
if (indexOfScalarPos(u8, blob, idx, '\n')) |eol| {
try output.appendSlice("<li>");
try output.appendSlice(blob[idx + 1 .. eol]);
try output.appendSlice("</li>\n");
idx = eol;
} else {
idx = blob.len;
}
} else {
try output.append(c);
}
idx += 1;
if (idx < blob.len) continue :sw blob[idx];
},
' ' => {
newline = 0;
indent = 0;
while (idx < blob.len and blob[idx] == ' ') {
idx += 1;
indent += 1;
try output.append(' ');
}
if (idx < blob.len) continue :sw blob[idx];
},
else => |c| {
newline = 0;
esc = false;
if (indent == 0) {
if (open_list) {
try output.appendSlice("</ul>");
open_list = false;
}
}
if (abx.Html.clean(c)) |clean| {
try output.appendSlice(clean);
} else {
try output.append(c);
}
idx += 1;
if (idx < blob.len) continue :sw blob[idx];
},
}
return try output.toOwnedSlice();
@@ -219,3 +277,4 @@ const abx = @import("verse").abx;
const std = @import("std");
const Allocator = std.mem.Allocator;
const eql = std.mem.eql;
const indexOfScalarPos = std.mem.indexOfScalarPos;