From 2653ac737f0df2a41d939e0c36f9b4ae502f5a48 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Tue, 12 Nov 2019 16:02:04 -0500
Subject: Implement version

---
 .gitignore     |  2 +-
 CMakeLists.txt |  3 +++
 main.c         | 24 +++++++++++++++++++-----
 reloc.h        |  1 +
 version.h.in   |  5 +++++
 5 files changed, 29 insertions(+), 6 deletions(-)
 create mode 100644 version.h.in

diff --git a/.gitignore b/.gitignore
index 5a63b1b..b8ad8b4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,5 +7,5 @@ cmake_install.cmake
 install_manifest.txt
 compile_commands.json
 CTestTestfile.cmake
+build
 reloc
-
diff --git a/CMakeLists.txt b/CMakeLists.txt
index fc688f9..583d65c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,9 +1,12 @@
 cmake_minimum_required(VERSION 2.8.11)
 project(reloc C)
+set(VERSION "1.0.0")
 
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -Wall -Wextra")
 
+configure_file(version.h.in version.h)
+include_directories("${CMAKE_BINARY_DIR}")
 add_executable(reloc main.c reloc.h)
 install(TARGETS reloc
 	RUNTIME DESTINATION bin)
diff --git a/main.c b/main.c
index dadc455..ee3cc0b 100644
--- a/main.c
+++ b/main.c
@@ -115,6 +115,11 @@ void reloc_replace(RelocMatch *match, const char *rstr) {
 }
 
 
+void show_version() {
+    printf("%s\n", VERSION);
+}
+
+
 int main(int argc, char *argv[]) {
     char *program = argv[0];
     char *program_relative = strrchr(program, DIRSEP);
@@ -122,20 +127,29 @@ int main(int argc, char *argv[]) {
         program = program_relative + 1;
     }
 
+    for (int i = 0; i < argc; i++) {
+        if (!strcmp(argv[i], "--version") || !strcmp(argv[i], "-V")) {
+            show_version();
+            exit(0);
+        }
+    }
+
     if (argc < 5) {
-        printf("%s <str1> <str2> <input_file> <output_file>\n"
+        printf("%s [-V] <str1> <str2> <input_file> <output_file>\n"
                "\n"
                "Arguments:\n"
-               "str1 - Pattern to search for\n"
-               "str2 - Replace str1 with contents of str2\n"
-               "input_file - Path to input file\n"
-               "output_file - Path to output file\n"
+               "--version (-V) - Display version and exit\n"
+               "str1           - Pattern to search for\n"
+               "str2           - Replace str1 with contents of str2\n"
+               "input_file     - Path to input file\n"
+               "output_file    - Path to output file\n"
                "\n"
                "Example:\n"
                "%s /original/path /new/path input.bin output.bin\n"
                "\n", program, program);
         exit(1);
     }
+
     char *needle = strdup(argv[1]);
     char *replacement = strdup(argv[2]);
     char *input_file = strdup(argv[3]);
diff --git a/reloc.h b/reloc.h
index 6822ef3..e97b4a3 100644
--- a/reloc.h
+++ b/reloc.h
@@ -8,6 +8,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include "version.h"
 
 #if defined(_WIN32) || defined(_WIN64)
 #define DIRSEP '\\'
diff --git a/version.h.in b/version.h.in
new file mode 100644
index 0000000..d6a4edf
--- /dev/null
+++ b/version.h.in
@@ -0,0 +1,5 @@
+#ifndef RELOC_VERSION_H
+
+#define VERSION "1.0.0"
+
+#endif // RELOC_VERSION_H
-- 
cgit