Change program arguments to use current path as project path

Option "-p" can be passed to specify another project path

3 files changed, 97 insertions, 12 deletions

diff --git a/include/FileUtil.hpp b/include/FileUtil.hpp
index 5a0bbc3..8407a36 100644
--- a/include/FileUtil.hpp
+++ b/include/FileUtil.hpp
@@ -24,6 +24,7 @@ namespace sibs
     Result<StringView> getFileContent(const char *filepath);
     bool fileOverwrite(const char *filepath, StringView data);
     const char* getHomeDir();
+    Result<std::string> getCwd();
 }
 
 #endif //SIBS_FILEUTIL_HPP
diff --git a/src/FileUtil.cpp b/src/FileUtil.cpp
index 400b439..d815ebf 100644
--- a/src/FileUtil.cpp
+++ b/src/FileUtil.cpp
@@ -131,4 +131,17 @@ namespace sibs
         }
         return homeDir;
     }
+
+    Result<string> getCwd()
+    {
+        string cwd;
+        cwd.reserve(PATH_MAX);
+        if(getcwd(&cwd[0], PATH_MAX) != 0)
+        {
+            if(cwd.empty()) cwd = ".";
+            return Result<string>::Ok(cwd);
+        }
+
+        return Result<string>::Err(strerror(errno));
+    }
 }
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index e3f927f..151e5a5 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -11,13 +11,13 @@ using namespace sibs;
 
 void usage()
 {
-    printf("Simple build system for native languages\n");
-    printf("usage:\n");
-    printf("    sibs <project path>\n");
-    printf("option:\n");
-    printf("    project path: Path containing project.conf\n");
-    printf("examples:\n");
-    printf("    sibs myProject\n");
+    printf("usage: sibs COMMAND\n\n");
+    printf("Simple Build System for Native Languages\n\n");
+    printf("Options:\n");
+    printf("  -p\t\tPath to project (directory that contains main project.conf file)\n");
+    printf("  -h\t\tPrint this help menu\n\n");
+    printf("Commands:\n");
+    printf("  build\t\tBuild a project that contains a project.conf file\n");
     exit(1);
 }
 
@@ -66,12 +66,8 @@ bool isSourceFile(tinydir_file *file)
     return false;
 }
 
-int main(int argc, const char **argv)
+void build(string projectPath)
 {
-    if(argc != 2)
-        usage();
-
-    string projectPath = argv[1];
     validateDirectoryPath(projectPath.c_str());
     if(projectPath.back() != '/')
         projectPath += "/";
@@ -124,6 +120,81 @@ int main(int argc, const char **argv)
     {
         exit(8);
     }
+}
+
+int main(int argc, const char **argv)
+{
+    string projectPath;
+    string command;
+    for(int i = 1; i < argc; ++i)
+    {
+        const char *arg = argv[i];
+        if(arg[0] == '-')
+        {
+            // Option
+            if(strcmp(arg, "-p") == 0)
+            {
+                if(!projectPath.empty())
+                {
+                    printf("-p option defined twice, should only be defined once\n");
+                    exit(1);
+                }
+
+                if(i < argc - 1)
+                {
+                    projectPath = argv[i + 1];
+                    ++i;
+                }
+                else
+                {
+                    printf("Expected project path after option -p\n");
+                    exit(1);
+                }
+            }
+            else if(strcmp(arg, "-h") == 0)
+            {
+                usage();
+            }
+            else
+            {
+                printf("Invalid option %s, type sibs -h to see valid options\n", arg);
+                exit(1);
+            }
+        }
+        else
+        {
+            if(!command.empty())
+            {
+                printf("Found command twice. First as %s, then as %s\n", command.c_str(), arg);
+                exit(1);
+            }
+            command = arg;
+        }
+    }
+
+    if(projectPath.empty())
+    {
+        Result<string> projectPathResult = getCwd();
+        if(projectPathResult.isErr())
+        {
+            printf("%s\n", projectPathResult.getErrMsg().c_str());
+            exit(11);
+        }
+        projectPath = projectPathResult.unwrap();
+    }
+
+    if(command == "build")
+        build(projectPath);
+    else if(command.empty())
+    {
+        printf("No command provided, type sibs -h to see valid commands\n");
+        exit(1);
+    }
+    else
+    {
+        printf("Invalid command %s, expected: build\n", command.c_str());
+        exit(1);
+    }
 
     return 0;
 }