autcomplete

dshash-completion.bash

@@ -0,0 +1,11 @@
+#!/bin/bash
+# Bash completion for dshash
+
+_dshash_autocomplete() {
+    local cur="${COMP_WORDS[COMP_CWORD]}"
+    mapfile -t completions < <(dshash autocomplete "${COMP_WORDS[@]:1:${COMP_CWORD}-1}")
+    mapfile -t COMPREPLY < <(compgen -W "${completions[*]}" -- "$cur")
+}
+
+# Use -o default to enable file/directory completion in addition to custom completions
+complete -o default -F _dshash_autocomplete dshash

dshash/main.cpp

@@ -27,16 +27,66 @@ int main(int argc, char* argv[]) {
 
     // Check for autocomplete command
     if (std::string(argv[1]) == "autocomplete") {
-        // Return available options for autocomplete
-        std::cout << "-v\n";
-        std::cout << "version\n";
-        // Suggest files and directories in current directory
-        try {
-            for (const auto& entry : std::filesystem::directory_iterator(".")) {
-                std::cout << entry.path().filename().string() << "\n";
+        // Parse the arguments passed by bash completion
+        // argv[2] onwards contains the current command line words (excluding the command itself)
+
+        // If no args typed yet, suggest commands and flags
+        if (argc == 2) {
+            std::cout << "-v\n";
+            std::cout << "version\n";
+            // Also list files/directories in current directory
+            try {
+                for (const auto& entry : std::filesystem::directory_iterator(".")) {
+                    std::string name = entry.path().filename().string();
+                    // Skip hidden files starting with .
+                    if (!name.empty() && name[0] != '.') {
+                        if (entry.is_directory()) {
+                            std::cout << name << "/\n";
+                        } else {
+                            std::cout << name << "\n";
+                        }
+                    }
+                }
+            } catch (...) {
+                // Ignore errors
+            }
+        } else {
+            // Get the last argument (the partial word being completed)
+            std::string partial = argv[argc - 1];
+
+            // Handle file/directory path completion
+            std::filesystem::path partial_path(partial);
+            std::filesystem::path dir_path = partial_path.parent_path();
+            std::string prefix = partial_path.filename().string();
+
+            if (dir_path.empty()) {
+                dir_path = ".";
+            }
+
+            try {
+                if (std::filesystem::exists(dir_path) && std::filesystem::is_directory(dir_path)) {
+                    for (const auto& entry : std::filesystem::directory_iterator(dir_path)) {
+                        std::string name = entry.path().filename().string();
+
+                        // Skip hidden files unless user is explicitly typing them
+                        if (prefix.empty() && !name.empty() && name[0] == '.') {
+                            continue;
+                        }
+
+                        // Check if filename starts with the prefix
+                        if (name.find(prefix) == 0) {
+                            std::filesystem::path full_path = entry.path();
+                            if (entry.is_directory()) {
+                                std::cout << full_path.string() << "/\n";
+                            } else {
+                                std::cout << full_path.string() << "\n";
+                            }
+                        }
+                    }
+                }
+            } catch (...) {
+                // Ignore errors in autocomplete
             }
-        } catch (...) {
-            // Ignore errors in autocomplete
         }
         return 0;
     }