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browser: add a func to dump HTML

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This commit is contained in:
Pierre Tachoire
2024-01-05 16:28:33 +01:00
parent 2aefd3736c
commit 2cdbf68526
2 changed files with 103 additions and 0 deletions
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94
src/browser/dump.zig Normal file
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@@ -0,0 +1,94 @@
const std = @import("std");
const File = std.fs.File;
const parser = @import("../netsurf.zig");
const Walker = @import("../dom/html_collection.zig").WalkerChildren;
pub fn htmlFile(root: *parser.Element, out: File) !void {
try out.writeAll("<!DOCTYPE html>\n<html>");
try nodeFile(root, out);
try out.writeAll("</html>\n");
}
fn nodeFile(root: *parser.Element, out: File) !void {
const walker = Walker{};
var next: ?*parser.Node = null;
while (true) {
next = try walker.get_next(parser.elementToNode(root), next) orelse break;
switch (try parser.nodeType(next.?)) {
.element => {
// open the tag
const tag = try parser.nodeLocalName(next.?);
try out.writeAll("<");
try out.writeAll(tag);
// write the attributes
const map = try parser.nodeGetAttributes(next.?);
const ln = try parser.namedNodeMapGetLength(map);
var i: u32 = 0;
while (i < ln) {
const attr = try parser.namedNodeMapItem(map, i) orelse break;
try out.writeAll(" ");
try out.writeAll(try parser.attributeGetName(attr));
try out.writeAll("=\"");
try out.writeAll(try parser.attributeGetValue(attr));
try out.writeAll("\"");
i += 1;
}
try out.writeAll(">");
// write the children
// TODO avoid recursion
try nodeFile(parser.nodeToElement(next.?), out);
// close the tag
try out.writeAll("</");
try out.writeAll(tag);
try out.writeAll(">");
},
.text => {
const v = try parser.nodeValue(next.?) orelse continue;
try out.writeAll(v);
},
.cdata_section => {
const v = try parser.nodeValue(next.?) orelse continue;
try out.writeAll("<![CDATA[");
try out.writeAll(v);
try out.writeAll("]]>");
},
.comment => {
const v = try parser.nodeValue(next.?) orelse continue;
try out.writeAll("<!--");
try out.writeAll(v);
try out.writeAll("-->");
},
// TODO handle processing instruction dump
.processing_instruction => continue,
// document fragment is outside of the main document DOM, so we
// don't output it.
.document_fragment => continue,
// document will never be called, but required for completeness.
.document => continue,
// done globally instead, but required for completeness.
.document_type => continue,
// deprecated
.attribute => continue,
.entity_reference => continue,
.entity => continue,
.notation => continue,
}
}
}
// HTMLFileTestFn is run by run_tests.zig
pub fn HTMLFileTestFn(out: File) !void {
const doc_html = try parser.documentHTMLParseFromFileAlloc(std.testing.allocator, "test.html");
// ignore close error
defer parser.documentHTMLClose(doc_html) catch {};
const doc = parser.documentHTMLToDocument(doc_html);
const root = try parser.documentGetDocumentElement(doc) orelse return error.DocumentNullRoot;
try htmlFile(root, out);
}

9
src/run_tests.zig
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@@ -122,3 +122,12 @@ test "bug document html parsing #4" {
doc = try parser.documentHTMLParse(file.reader(), "UTF-8"); doc = try parser.documentHTMLParse(file.reader(), "UTF-8");
parser.documentHTMLClose(doc) catch {}; parser.documentHTMLClose(doc) catch {};
} }
const dump = @import("browser/dump.zig");
test "run browser tests" {
// const out = std.io.getStdOut();
const out = try std.fs.openFileAbsolute("/dev/null", .{ .mode = .write_only });
defer out.close();
try dump.HTMLFileTestFn(out);
}