462421d345
This provides a pluggable mechanism for defining new fetchers. It adds
a builtin function 'fetchTree' that generalizes existing fetchers like
'fetchGit', 'fetchMercurial' and 'fetchTarball'. 'fetchTree' takes a
set of attributes, e.g.
fetchTree {
type = "git";
url = "https://example.org/repo.git";
ref = "some-branch";
rev = "abcdef...";
}
The existing fetchers are just wrappers around this. Note that the
input attributes to fetchTree are the same as flake input
specifications and flake lock file entries.
All fetchers share a common cache stored in
~/.cache/nix/fetcher-cache-v1.sqlite. This replaces the ad hoc caching
mechanisms in fetchGit and download.cc (e.g. ~/.cache/nix/{tarballs,git-revs*}).
This also adds support for Git worktrees (c169ea5904).
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
#pragma once
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#include "types.hh"
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#include <regex>
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namespace nix {
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struct ParsedURL
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{
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std::string url;
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std::string base; // URL without query/fragment
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std::string scheme;
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std::optional<std::string> authority;
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std::string path;
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std::map<std::string, std::string> query;
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std::string fragment;
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std::string to_string() const;
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bool operator ==(const ParsedURL & other) const;
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};
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MakeError(BadURL, Error);
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std::string percentDecode(std::string_view in);
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std::map<std::string, std::string> decodeQuery(const std::string & query);
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ParsedURL parseURL(const std::string & url);
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// URI stuff.
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const static std::string pctEncoded = "(?:%[0-9a-fA-F][0-9a-fA-F])";
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const static std::string schemeRegex = "(?:[a-z+]+)";
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const static std::string ipv6AddressRegex = "(?:\\[[0-9a-fA-F:]+\\])";
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const static std::string unreservedRegex = "(?:[a-zA-Z0-9-._~])";
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const static std::string subdelimsRegex = "(?:[!$&'\"()*+,;=])";
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const static std::string hostnameRegex = "(?:(?:" + unreservedRegex + "|" + pctEncoded + "|" + subdelimsRegex + ")*)";
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const static std::string hostRegex = "(?:" + ipv6AddressRegex + "|" + hostnameRegex + ")";
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const static std::string userRegex = "(?:(?:" + unreservedRegex + "|" + pctEncoded + "|" + subdelimsRegex + "|:)*)";
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const static std::string authorityRegex = "(?:" + userRegex + "@)?" + hostRegex + "(?::[0-9]+)?";
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const static std::string pcharRegex = "(?:" + unreservedRegex + "|" + pctEncoded + "|" + subdelimsRegex + "|[:@])";
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const static std::string queryRegex = "(?:" + pcharRegex + "|[/? \"])*";
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const static std::string segmentRegex = "(?:" + pcharRegex + "+)";
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const static std::string absPathRegex = "(?:(?:/" + segmentRegex + ")*/?)";
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const static std::string pathRegex = "(?:" + segmentRegex + "(?:/" + segmentRegex + ")*/?)";
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// A Git ref (i.e. branch or tag name).
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const static std::string refRegexS = "[a-zA-Z0-9][a-zA-Z0-9_.-]*"; // FIXME: check
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extern std::regex refRegex;
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// A Git revision (a SHA-1 commit hash).
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const static std::string revRegexS = "[0-9a-fA-F]{40}";
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extern std::regex revRegex;
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// A ref or revision, or a ref followed by a revision.
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const static std::string refAndOrRevRegex = "(?:(" + revRegexS + ")|(?:(" + refRegexS + ")(?:/(" + revRegexS + "))?))";
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const static std::string flakeIdRegexS = "[a-zA-Z][a-zA-Z0-9_-]*";
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extern std::regex flakeIdRegex;
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}
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