poafloc

commit 0ab5aaf2158b43e4fa1423450384ed51a6c9cbd2
parent 9c58f374dcc4ea758cb933a9bc409cc8a398dc6f
Author: Dimitrije Dobrota <mail@dimitrijedobrota.com>
Date:   Sat,  8 Jun 2024 22:04:01 +0200

Add support for coding multiple usages in doc

Diffstat:
M
args.hpp
 | 
22
+++++++++++++++++++---

1 file changed, 19 insertions(+), 3 deletions(-)
diff --git a/args.hpp b/args.hpp
@@ -302,9 +302,25 @@ class Parser {
         }
     };
 
+    void print_usage(const char *name) const {
+        if (argp->doc) {
+            std::istringstream iss(argp->doc);
+            std::string s;
+
+            std::getline(iss, s, '\n');
+            std::cout << " " << s;
+
+            while (std::getline(iss, s, '\n')) {
+                std::cout << std::format("\n   or: {} [OPTIONS...] {}", name,
+                                         s);
+            }
+        }
+    }
+
     void help(const char *name) const {
-        std::cout << std::format("Usage: {} [OPTIONS...] {}\n\n", name,
-                                 argp->doc ? argp->doc : "");
+        std::cout << std::format("Usage: {} [OPTIONS...]", name);
+        print_usage(name);
+        std::cout << "\n\n";
 
         for (const auto &entry : help_entries) {
             bool prev = false;
@@ -414,7 +430,7 @@ class Parser {
             }
         }
 
-        if (argp->doc) print(argp->doc);
+        print_usage(name);
         std::cout << std::endl;
 
         exit(0);