mirror of
https://github.com/NixOS/nix
synced 2024-09-20 11:11:03 -04:00
f3d3587ab3
Valid per https://datatracker.ietf.org/doc/html/rfc3986#section-3.3 (and also somewhat frequently happening for local paths)
46 lines
2.3 KiB
C++
46 lines
2.3 KiB
C++
#pragma once
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#include <string>
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#include <regex>
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namespace nix {
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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][a-z0-9+.-]*)";
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const static std::string ipv6AddressSegmentRegex = "[0-9a-fA-F:]+(?:%\\w+)?";
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const static std::string ipv6AddressRegex = "(?:\\[" + ipv6AddressSegmentRegex + "\\]|" + ipv6AddressSegmentRegex + ")";
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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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// Instead of defining what a good Git Ref is, we define what a bad Git Ref is
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// This is because of the definition of a ref in refs.c in https://github.com/git/git
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// See tests/fetchGitRefs.sh for the full definition
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const static std::string badGitRefRegexS = "//|^[./]|/\\.|\\.\\.|[[:cntrl:][:space:]:?^~\[]|\\\\|\\*|\\.lock$|\\.lock/|@\\{|[/.]$|^@$|^$";
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extern std::regex badGitRefRegex;
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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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