在gentoo针对.dtd验证metadata.xml?

我正在尝试验证元数据. xml 与 www.gentoo.org/dtd/metadata相对. dtd 和 xmllint /dev-libs/libxml2"rel =" nofollow noreferrer> = dev-libs/libxml2-2.9.3 ebuild.

I am trying to validate metadata.xml against www.gentoo.org/dtd/metadata.dtd with xmllint from =dev-libs/libxml2-2.9.3 ebuild.

我尝试了这些命令(来自此处):

I tried the commands (some from here):

$ xmllint --noout --valid  metadata.xml
error : Unknown IO error
metadata.xml:2: warning: failed to load external entity "http://www.gentoo.org/dtd/metadata.dtd"

与xmllint metadata.xml --dtdvalid metadata.dtd相同 和xmllint --loaddtd http://www.gentoo.org/dtd/metadata.dtd

the same for xmllint metadata.xml --dtdvalid metadata.dtd and xmllint --loaddtd http://www.gentoo.org/dtd/metadata.dtd

$ xmllint --valid  metadata.xml --schema metadata.dtd
metadata.dtd:1: parser error : StartTag: invalid element name

我需要xmllint而不是 mono-xmltool (的https://stackoverflow.com/questions/1658325>)，因为repoman -d命令中使用了xmllint. repoman用于travis-ci中的gentoo覆盖验证

I need xmllint and not mono-xmltool (from C#/CLI) because xmllint is used in repoman -d command. And repoman is used for gentoo overlay validation in travis-ci

如何使用xmllint正确验证xml?

How to validate xml with xmllint properly?

UPD: 网站返回"HTTP/1.1 301永久移动"，这就是加载失败的原因

UPD: site returns "HTTP/1.1 301 Moved Permanently" and that is why load fails

strace的一部分:

part of strace:

recvfrom(3, "HTTP/1.1 301 Moved Permanently\r\n"..., 4096, 0, NULL, NULL) = 446
recvfrom(3, "", 4096, 0, NULL, NULL)    = 0
close(3)                                = 0
write(2, "error : ", 8error : )                 = 8
write(2, "Unknown IO error\n", 17Unknown IO error

libxml2可能不执行https

probably libxml2 doesn't do https

USE="icu ipv6 python readline -debug -examples -lzma -static-libs {-test}"

libxml2使用nanoHTTP， nanoHTTP可以与HTTPS一起使用

libxml2 uses nanoHTTP, nanoHTTP can work with HTTPS