poafloc

commit 3cdb743888aa56c5e5301858e24973284a311946
parent 0ab5aaf2158b43e4fa1423450384ed51a6c9cbd2
Author: Dimitrije Dobrota <mail@dimitrijedobrota.com>
Date:   Sat,  8 Jun 2024 22:05:12 +0200

Add support for 2 part message in --help

Diffstat:
M
args.hpp
 | 
11
+++++++++++
M
demo.cpp
 | 
7
++++++-

2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/args.hpp b/args.hpp
@@ -42,6 +42,7 @@ class Parser {
         const option_t *options;
         const parse_f parser;
         const char *doc;
+        const char *message;
     };
 
     Parser(argp_t *argp) : argp(argp) {
@@ -318,8 +319,16 @@ class Parser {
     }
 
     void help(const char *name) const {
+        std::string m1, m2;
+        if (argp->message) {
+            std::istringstream iss(argp->message);
+            std::getline(iss, m1, '\v');
+            std::getline(iss, m2, '\v');
+        }
+
         std::cout << std::format("Usage: {} [OPTIONS...]", name);
         print_usage(name);
+        if (!m1.empty()) std::cout << "\n" << m1;
         std::cout << "\n\n";
 
         for (const auto &entry : help_entries) {
@@ -377,6 +386,8 @@ class Parser {
             std::cout << std::endl;
         }
 
+        if (!m2.empty()) std::cout << "\n" << m2 << "\n";
+
         exit(0);
     }
 
diff --git a/demo.cpp b/demo.cpp
@@ -52,7 +52,12 @@ static const Parser::option_t options[] = {
 // clang-format on
 
 int main(int argc, char *argv[]) {
-    Parser::argp_t argp = {options, parse_opt, "doc string"};
+    Parser::argp_t argp = {
+        options,
+        parse_opt,
+        "doc string\nother usage",
+        "First half of the message\vsecond half of the message"
+    };
     Parser parser(&argp);
 
     arguments_t arguments;