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Merge pull request #2158 from Ma27/improve-search-ux

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search.cc: improve UX for `nix search`
This commit is contained in:
Eelco Dolstra 2018-07-02 11:16:21 +02:00 committed by GitHub
commit dd98683e65
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1 changed files with 20 additions and 10 deletions
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30
src/nix/search.cc
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@ -7,19 +7,25 @@
#include "common-args.hh"
#include "json.hh"
#include "json-to-value.hh"
#include "shared.hh"
#include <regex>
#include <fstream>
using namespace nix;
std::string hilite(const std::string & s, const std::smatch & m)
std::string wrap(std::string prefix, std::string s)
{
return prefix + s + ANSI_NORMAL;
}
std::string hilite(const std::string & s, const std::smatch & m, std::string postfix)
{
return
m.empty()
? s
: std::string(m.prefix())
+ ANSI_RED + std::string(m.str()) + ANSI_NORMAL
+ ANSI_RED + std::string(m.str()) + postfix
+ std::string(m.suffix());
}
@ -75,6 +81,10 @@ struct CmdSearch : SourceExprCommand, MixJSON
"To search for git and frontend or gui:",
"nix search git 'frontend|gui'"
},
Example{
"To display the description of the found packages:",
"nix search git --verbose"
}
};
}
@ -164,14 +174,10 @@ struct CmdSearch : SourceExprCommand, MixJSON
} else {
results[attrPath] = fmt(
"Attribute name: %s\n"
"Package name: %s\n"
"Version: %s\n"
"Description: %s\n",
hilite(attrPath, attrPathMatch),
hilite(name, nameMatch),
parsed.version,
hilite(description, descriptionMatch));
"* %s (%s)\n %s\n",
wrap("\e[0;1m", hilite(attrPath, attrPathMatch, "\e[0;1m")),
wrap("\e[0;2m", hilite(parsed.fullName, nameMatch, "\e[0;2m")),
hilite(description, descriptionMatch, ANSI_NORMAL));
}
}
@ -263,6 +269,10 @@ struct CmdSearch : SourceExprCommand, MixJSON
throw SysError("cannot rename '%s' to '%s'", tmpFile, jsonCacheFileName);
}
if (results.size() == 0)
throw Error("no results for the given search term(s)!");
RunPager pager;
for (auto el : results) std::cout << el.second << "\n";
}