Support for printing subcommands

CHANGELOG.md

@@ -1,8 +1,6 @@
 ## Version 0.7 (in progress)
 * Allow comments in ini files (lines starting with `;`)
-* Ini files support flags
+* Ini files support flags, vectors, subcommands
-* Ini files support vectors
-* Ini files support subcommands (only read)
 * Added CodeCov code coverage reports
 * Lots of small bugfixes related to adding tests to increase coverage
 * Error handling now uses scoped enum in errors

README.md

@@ -206,7 +206,8 @@ in_subcommand = Wow
 sub.subcommand = true
 ```
 
-Spaces before and after the name and argument are ignored. Multiple arguments are separated by spaces. One set of quotes will be removed, preserving spaces (the same way the command line works). Boolean options can be `true`, `on`, `1`, `yes`; or `false`, `off`, `0`, `no` (case insensitive). Sections (and `.` separated names) are treated as subcommands (note: this does not mean that subcommand was passed, it just sets the "defaults".
+Spaces before and after the name and argument are ignored. Multiple arguments are separated by spaces. One set of quotes will be removed, preserving spaces (the same way the command line works). Boolean options can be `true`, `on`, `1`, `yes`; or `false`, `off`, `0`, `no` (case insensitive). Sections (and `.` separated names) are treated as subcommands (note: this does not mean that subcommand was passed, it just sets the "defaults". To print a configuration file from the passed
+arguments, use `.config_to_str(default_also=false)`, where `default_also` will also show any defaulted arguments.
 
 
 ## Subclassing

include/CLI/App.hpp

@@ -547,34 +547,37 @@ public:
     /// @name Help
     ///@{
 
-    /// Produce a string that could be read in as a config of the current values of the App. Set default_also to include default arguments.
+    /// Produce a string that could be read in as a config of the current values of the App. Set default_also to include default arguments. Prefix will add a string to the beginning of each option.
-    std::string config_to_str(bool default_also=false) const {
+    std::string config_to_str(bool default_also=false, std::string prefix="") const {
         std::stringstream out;
         for(const Option_p &opt : options_) {
 
             // Only process option with a long-name
             if(opt->lnames_.size() > 0) {
+                std::string name = prefix + opt->lnames_[0];
 
                 // Non-flags
                 if(opt->get_expected() != 0) {
 
                     // If the option was found on command line
                     if(opt->count() > 0)
-                        out << opt->lnames_[0] << "=" << detail::join(opt->results()) << std::endl;
+                        out << name << "=" << detail::join(opt->results()) << std::endl;
 
                     // If the option has a default and is requested by optional argument
                     else if(default_also && opt->defaultval_ != "")
-                        out << opt->lnames_[0] << "=" << opt->defaultval_ << std::endl;
+                        out << name << "=" << opt->defaultval_ << std::endl;
                 // Flag, one passed
                 } else if(opt->count() == 1) {
-                    out << opt->lnames_[0] << "=true" << std::endl;
+                    out << name << "=true" << std::endl;
 
                 // Flag, multiple passed
                 } else if(opt->count() > 1) {
-                    out << opt->lnames_[0] << "=" << opt->count() << std::endl;
+                    out << name << "=" << opt->count() << std::endl;
                 }
             }
         }
+        for(const App_p &subcom : subcommands_)
+            out << subcom->config_to_str(default_also, prefix + subcom->name_ + ".");
         return out.str();
     }
 

tests/IniTest.cpp

@@ -549,3 +549,17 @@ TEST_F(TApp, IniOutputDefault) {
     str = app.config_to_str(true);
     EXPECT_THAT(str, HasSubstr("simple=7"));
 }
+
+TEST_F(TApp, IniOutputSubcom) {
+
+    app.add_flag("--simple");
+    auto subcom = app.add_subcommand("other");
+    subcom->add_flag("--newer");
+
+    args = {"--simple", "other", "--newer"};
+    run();
+
+    std::string str = app.config_to_str();
+    EXPECT_THAT(str, HasSubstr("simple=true"));
+    EXPECT_THAT(str, HasSubstr("other.newer=true"));
+}