Add completion for paths

10 files changed, 16 insertions, 11 deletions

diff --git a/src/nix/build.cc b/src/nix/build.cc
index 83d47acd4..474337208 100644
--- a/src/nix/build.cc
+++ b/src/nix/build.cc
@@ -18,6 +18,7 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixProfile
             .description = "path of the symlink to the build result",
             .labels = {"path"},
             .handler = {&outLink},
+            .completer = completePath
         });
 
         addFlag({
diff --git a/src/nix/cat.cc b/src/nix/cat.cc
index fd91f2036..eeee1e529 100644
--- a/src/nix/cat.cc
+++ b/src/nix/cat.cc
@@ -25,7 +25,7 @@ struct CmdCatStore : StoreCommand, MixCat
 {
     CmdCatStore()
     {
-        expectArg("path", &path);
+        expectPathArg("path", &path);
     }
 
     std::string description() override
@@ -47,7 +47,7 @@ struct CmdCatNar : StoreCommand, MixCat
 
     CmdCatNar()
     {
-        expectArg("nar", &narPath);
+        expectPathArg("nar", &narPath);
         expectArg("path", &path);
     }
 
diff --git a/src/nix/command.cc b/src/nix/command.cc
index 71b027719..803a36e84 100644
--- a/src/nix/command.cc
+++ b/src/nix/command.cc
@@ -108,6 +108,7 @@ MixProfile::MixProfile()
         .description = "profile to update",
         .labels = {"path"},
         .handler = {&profile},
+        .completer = completePath
     });
 }
 
diff --git a/src/nix/hash.cc b/src/nix/hash.cc
index 366314227..0f460c668 100644
--- a/src/nix/hash.cc
+++ b/src/nix/hash.cc
@@ -31,7 +31,7 @@ struct CmdHash : Command
             .labels({"modulus"})
             .dest(&modulus);
         #endif
-        expectArgs("paths", &paths);
+        expectPathArgs("paths", &paths);
     }
 
     std::string description() override
diff --git a/src/nix/installables.cc b/src/nix/installables.cc
index 57060e9b1..c144a7e70 100644
--- a/src/nix/installables.cc
+++ b/src/nix/installables.cc
@@ -77,7 +77,8 @@ SourceExprCommand::SourceExprCommand()
         .shortName = 'f',
         .description = "evaluate FILE rather than the default",
         .labels = {"file"},
-        .handler = {&file}
+        .handler = {&file},
+        .completer = completePath
     });
 
     addFlag({
diff --git a/src/nix/ls.cc b/src/nix/ls.cc
index b9716a6a1..aac082422 100644
--- a/src/nix/ls.cc
+++ b/src/nix/ls.cc
@@ -85,7 +85,7 @@ struct CmdLsStore : StoreCommand, MixLs
 {
     CmdLsStore()
     {
-        expectArg("path", &path);
+        expectPathArg("path", &path);
     }
 
     Examples examples() override
@@ -117,7 +117,7 @@ struct CmdLsNar : Command, MixLs
 
     CmdLsNar()
     {
-        expectArg("nar", &narPath);
+        expectPathArg("nar", &narPath);
         expectArg("path", &path);
     }
 
diff --git a/src/nix/main.cc b/src/nix/main.cc
index c491bc264..fffdeab90 100644
--- a/src/nix/main.cc
+++ b/src/nix/main.cc
@@ -68,7 +68,7 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
         addFlag({
             .longName = "help",
             .description = "show usage information",
-            .handler = {[&]() { showHelpAndExit(); }},
+            .handler = {[&]() { if (!completions) showHelpAndExit(); }},
         });
 
         addFlag({
@@ -96,7 +96,7 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
         addFlag({
             .longName = "version",
             .description = "show version information",
-            .handler = {[&]() { printVersion(programName); }},
+            .handler = {[&]() { if (!completions) printVersion(programName); }},
         });
 
         addFlag({
@@ -169,6 +169,7 @@ void mainWrapped(int argc, char * * argv)
     Finally printCompletions([&]()
     {
         if (completions) {
+            std::cout << (pathCompletions ? "filenames\n" : "no-filenames\n");
             for (auto & s : *completions)
                 std::cout << s << "\n";
         }
diff --git a/src/nix/repl.cc b/src/nix/repl.cc
index 0a6a7ab19..2e7b14d08 100644
--- a/src/nix/repl.cc
+++ b/src/nix/repl.cc
@@ -767,7 +767,7 @@ struct CmdRepl : StoreCommand, MixEvalArgs
 
     CmdRepl()
     {
-        expectArgs("files", &files);
+        expectPathArgs("files", &files);
     }
 
     std::string description() override
diff --git a/src/nix/run.cc b/src/nix/run.cc
index 3e2c8b4f3..3701ffe3d 100644
--- a/src/nix/run.cc
+++ b/src/nix/run.cc
@@ -149,7 +149,7 @@ struct CmdRun : InstallableCommand, RunCommon
 
     CmdRun()
     {
-        expectArgs("args", &args);
+        expectPathArgs("args", &args);
     }
 
     std::string description() override
diff --git a/src/nix/sigs.cc b/src/nix/sigs.cc
index 6c9b9a792..7821a5432 100644
--- a/src/nix/sigs.cc
+++ b/src/nix/sigs.cc
@@ -105,7 +105,8 @@ struct CmdSignPaths : StorePathsCommand
             .shortName = 'k',
             .description = "file containing the secret signing key",
             .labels = {"file"},
-            .handler = {&secretKeyFile}
+            .handler = {&secretKeyFile},
+            .completer = completePath
         });
     }