From a070c649ddbe70a22f6265b9f5b48f6bde7eac08 Mon Sep 17 00:00:00 2001
From: Loek Le Blansch <loek@pipeframe.xyz>
Date: Sat, 26 Oct 2024 18:29:44 +0200
Subject: add readline cli routines

---
 CMakeLists.txt          |  7 ++++++-
 backend/Dungeon.h       |  6 ++++++
 frontend/CMakeLists.txt |  2 ++
 frontend/cli.cpp        | 35 +++++++++++++++++++++++++++++++++++
 frontend/cli.h          |  8 ++++++++
 frontend/main.cpp       | 20 ++++++++++++++++++++
 frontend/strings.cpp    | 28 ++++++++++++++++++++++++++++
 frontend/strings.h      | 16 ++++++++++++++++
 8 files changed, 121 insertions(+), 1 deletion(-)
 create mode 100644 backend/Dungeon.h
 create mode 100644 frontend/cli.cpp
 create mode 100644 frontend/cli.h
 create mode 100644 frontend/strings.cpp
 create mode 100644 frontend/strings.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 98c41b3..af125c8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,8 +10,13 @@ project(main CXX)
 
 add_executable(main)
 
+target_include_directories(main PRIVATE .)
+
 add_subdirectory(backend)
 add_subdirectory(frontend)
 
-target_link_libraries(main pugixml)
+target_link_libraries(main
+	pugixml
+	readline
+)
 
diff --git a/backend/Dungeon.h b/backend/Dungeon.h
new file mode 100644
index 0000000..34fa776
--- /dev/null
+++ b/backend/Dungeon.h
@@ -0,0 +1,6 @@
+#pragma once
+
+class Dungeon {
+
+};
+
diff --git a/frontend/CMakeLists.txt b/frontend/CMakeLists.txt
index dd74089..eafbe55 100644
--- a/frontend/CMakeLists.txt
+++ b/frontend/CMakeLists.txt
@@ -1,4 +1,6 @@
 target_sources(main PUBLIC
 	main.cpp
+	cli.cpp
+	strings.cpp
 )
 
diff --git a/frontend/cli.cpp b/frontend/cli.cpp
new file mode 100644
index 0000000..352de4a
--- /dev/null
+++ b/frontend/cli.cpp
@@ -0,0 +1,35 @@
+#include <cstdlib>
+#include <cstdio>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+
+#include "cli.h"
+
+using namespace std;
+
+static void handle_line(const string & line) {
+	printf("CMD: %s\n", line.c_str());
+}
+
+string cli_readline() {
+	const char * PROMPT = "> ";
+
+	char * input = readline(PROMPT);
+	// ctrl-d
+	if (input == NULL) exit(EXIT_SUCCESS);
+	string out = string(input);
+	if (out.size() > 0) add_history(input);
+	free(input);
+
+	return out;
+}
+
+void cli_main() {
+	while (1) {
+		string cmd = cli_readline();
+		if (cmd.size() == 0) continue;
+		handle_line(cmd);
+	}
+}
+
diff --git a/frontend/cli.h b/frontend/cli.h
new file mode 100644
index 0000000..a069d7a
--- /dev/null
+++ b/frontend/cli.h
@@ -0,0 +1,8 @@
+#pragma once
+
+#include <string>
+
+void cli_main();
+
+std::string cli_readline();
+
diff --git a/frontend/main.cpp b/frontend/main.cpp
index acaf028..90cb1d2 100644
--- a/frontend/main.cpp
+++ b/frontend/main.cpp
@@ -1,7 +1,27 @@
+#include <memory>
 #include <cstdlib>
 #include <cstdio>
 
+#include "backend/Dungeon.h"
+
+#include "cli.h"
+#include "strings.h"
+
+using namespace std;
+
 int main() {
+	auto dungeon = make_unique<Dungeon>();
+
+	print_string(strings::INTRO);
+	string filename = cli_readline();
+	if (filename.size() == 0) {
+		printf("TODO: generate dungeon\n");
+	} else {
+		printf("TODO: load %s\n", filename.c_str());
+	}
+
+	cli_main();
+
 	return EXIT_SUCCESS;
 }
 
diff --git a/frontend/strings.cpp b/frontend/strings.cpp
new file mode 100644
index 0000000..0d4dee0
--- /dev/null
+++ b/frontend/strings.cpp
@@ -0,0 +1,28 @@
+#include "strings.h"
+
+using namespace std;
+
+void print_string(const char * str) {
+	printf("%s\n", wrap_string(str).c_str());
+}
+
+string wrap_string(const char * str) {
+	string out;
+
+	for (; *str != '\0'; str++) {
+		if (str[0] == '\n') {
+			if (str[1] == '\n') {
+				out += "\n\n";
+				str++;
+			} else {
+				out += " ";
+			}
+			continue;
+		}
+
+		out += *str;
+	}
+
+	return out;
+}
+
diff --git a/frontend/strings.h b/frontend/strings.h
new file mode 100644
index 0000000..910eaa8
--- /dev/null
+++ b/frontend/strings.h
@@ -0,0 +1,16 @@
+#pragma once
+
+#include <string>
+
+namespace strings {
+
+static constexpr const char * INTRO = R"(Voer de naam van een (.xml) bestand in
+om hieruit een kerker te laden, of druk direct op ENTER om een kerker te
+genereren.)";
+
+}
+
+void print_string(const char *);
+
+std::string wrap_string(const char *);
+
-- 
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