improvements to the help command, including outputting detailed descriptions

include/help.hpp

@@ -10,6 +10,9 @@ namespace cellar {
     namespace help {
         extern void set_description(string,string);
         extern string get_description(string);
+        
+        extern void set_details(string,string);
+        extern string get_details(string);
     }
 }
 

src/bottles/commands.cpp.cog

@@ -5,6 +5,7 @@
 #include "internal/bottles.hpp"
 #include "commands.hpp"
 #include "dll.hpp"
+#include "help.hpp"
 
 using namespace std;
 using namespace cellar::bottles;
@@ -14,6 +15,7 @@ DLL_PUBLIC map<string, CommandFunction> cellar::commands::bottles_commands() {
     map<string, CommandFunction> result;
     /*[[[cog
          import cog
+         import os
 
          with open("src/bottles/commands.txt") as commandfile:
             for line in commandfile:
@@ -30,6 +32,17 @@ DLL_PUBLIC map<string, CommandFunction> cellar::commands::bottles_commands() {
                              .replace("\"", "\\\"")
                              .replace("\\", "\\\\")))
                              # the replace methods escape " and \ characters
+                else:
+                    print("-- No description is available for the {0} command.".format(name))
+
+                if os.path.exists("src/bottles/help/" + name):
+                    cog.out("cellar::help::set_details(\"{0}\", R\"(".format(name))
+                    with open("src/bottles/help/" + name) as detailsfile:
+                        for detail in detailsfile:
+                            cog.out(detail)
+                    cog.out(")\");")
+                else:
+                    print("-- No details are available for the {0} command.".format(name))
       ]]]*/
     //[[[end]]]
     return result;

src/commands.cpp.cog

@@ -25,6 +25,7 @@ map<string, CommandFunction> cellar::commands::core_commands() {
     map<string, CommandFunction> result;
     /*[[[cog
          import cog
+         import os.path
 
          with open("src/commands.txt") as commandfile:
             for line in commandfile:
@@ -41,6 +42,17 @@ map<string, CommandFunction> cellar::commands::core_commands() {
                              .replace("\"", "\\\"")
                              .replace("\\", "\\\\")))
                              # the replace methods escape " and \ characters
+                else:
+                    print("-- No description is available for the {0} command.".format(name))
+
+                if os.path.exists("src/help/" + name):
+                    cog.out("cellar::help::set_details(\"{0}\", R\"(".format(name))
+                    with open("src/help/" + name) as detailsfile:
+                        for detail in detailsfile:
+                            cog.out(detail)
+                    cog.out(")\");")
+                else:
+                    print("-- No details are available for the {0} command.".format(name))
       ]]]*/
     //[[[end]]]
     return result;

src/help/details.cpp

@@ -0,0 +1,26 @@
+#include <map>
+#include <string>
+
+#include "help.hpp"
+
+map<string,string> details_map;
+
+void cellar::help::set_details(string command, string details) {
+    if (details.empty()) {
+        if (details_map.find(command) == details_map.end()) { // not found
+            return; // no details no cry
+        } else {
+            details_map.erase(command);
+        }
+    } else { // setting details
+        details_map[command] = details;
+    }
+}
+
+string cellar::help::get_details(string command) {
+    if (details_map.find(command) == details_map.end()) { // not found
+        return "";
+    } else {
+        return details_map.at(command);
+    }
+}

src/help/help.cpp

@@ -3,6 +3,8 @@
 #include <string>
 #include <vector>
 
+#include <boost/algorithm/string.hpp>
+
 #include "cellar.hpp"
 #include "internal/core.hpp"
 #include "help.hpp"
@@ -17,16 +19,41 @@ void cellar::commands::help_command(int argc, vector<string> argv) {
 
     cout << endl; // TODO: cellar::output function for code clarity
 
-    output::statement("You have these commands:");
-    stringstream sstr;
-    for (string command : commands) {
-        sstr << "\t" << command;
-        
-        string desc = help::get_description(command);
-        if (!desc.empty()) {
-            sstr << " - " << desc;
+    if (argc == 1) {
+        output::statement("You have these commands:");
+        stringstream sstr;
+        for (string command : commands) {
+            sstr << "\t" << command;
+            
+            string desc = help::get_description(command);
+            if (!desc.empty()) {
+                sstr << " - " << desc;
+            }
+            output::statement(sstr.str());
+            sstr.str("");
         }
+    } else {
+        string command = argv[1];
+        stringstream sstr;
+        sstr << "cellar " << command << " - ";
+
+        string desc = help::get_description(command);
+        if (desc.empty()) { sstr << "no description is available."; }
+        else { sstr << desc; }
         output::statement(sstr.str());
-        sstr.str("");
+
+        cout << endl;
+
+        string details = help::get_details(command);
+        if (details.empty()) { output::statement("no details available."); }
+        else {
+            vector<string> detaillines;
+            boost::split(detaillines, details, boost::is_any_of("\n"));
+
+            for (string line : detaillines) { 
+                if (!line.empty()) { output::statement(line); }
+                else { cout << endl; }
+            }
+        }
     }
 }

src/help/version

@@ -0,0 +1 @@
+No, really, that's all it does.

src/launch/commands.cpp.cog

@@ -5,6 +5,7 @@
 #include "internal/launch.hpp"
 #include "commands.hpp"
 #include "dll.hpp"
+#include "help.hpp"
 
 using namespace std;
 using namespace cellar::launch;
@@ -14,6 +15,7 @@ DLL_PUBLIC map<string, CommandFunction> cellar::commands::launch_commands() {
     map<string, CommandFunction> result;
     /*[[[cog
          import cog
+         import os
 
          with open("src/launch/commands.txt") as commandfile:
             for line in commandfile:
@@ -30,6 +32,17 @@ DLL_PUBLIC map<string, CommandFunction> cellar::commands::launch_commands() {
                              .replace("\"", "\\\"")
                              .replace("\\", "\\\\")))
                              # the replace methods escape " and \ characters
+                else:
+                    print("-- No description is available for the {0} command.".format(name))
+
+                if os.path.exists("src/launch/help/" + name):
+                    cog.out("cellar::help::set_details(\"{0}\", R\"(".format(name))
+                    with open("src/launch/help/" + name) as detailsfile:
+                        for detail in detailsfile:
+                            cog.out(detail)
+                    cog.out(")\");")
+                else:
+                    print("-- No details are available for the {0} command.".format(name))
       ]]]*/
     //[[[end]]]
     return result;

src/launch/commands.txt

@@ -1,3 +1,3 @@
-launch launch_command
-winecfg launch_winecfg
-regedit launch_regedit
+launch launch_command Launch a program in WINE.
+winecfg launch_winecfg Launch winecfg.
+regedit launch_regedit Launch regedit.

src/launch/help/regedit

@@ -0,0 +1 @@
+This is an alias for "cellar launch regedit".

src/launch/help/winecfg

@@ -0,0 +1 @@
+This is an alias for "cellar launch winecfg".