platform: get full path of the project

issue #2

src/cdo.c

@@ -4,6 +4,7 @@
 
 #include "cmd.h"
 #include "tools/log.h"
+#include "platform/operations.h"
 
 static void __attribute__((constructor)) init_cdo(void) {
   atexit(exit_cmd);
@@ -13,7 +14,7 @@ static void __attribute__((constructor)) init_cdo(void) {
 
 int main (int argc, char *argv[]) {
   struct ArgList* args = parse_args(argc, argv);
-  const char* project_path = extract_value_from_arg(args, ARG_PROJECT);
-  LOG_INFO("Project full path: %s", project_path);
+  const char* relative_project_path = extract_value_from_arg(args, ARG_PROJECT);
+  LOG_INFO("Project full path: %s", convert_relative_to_full_path(relative_project_path));
   return 0;
 }

src/platform/operations.c

@@ -0,0 +1,50 @@
+#include "operations.h"
+#include "../tools/alloc_wrappers.h"
+
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+const char* convert_relative_to_full_path(const char* relative_path) {
+    LOG_DEBUG("Entering convert_relative_to_full_path function");
+
+    char* cwd;
+    cwd = getcwd(NULL, 0);
+    if (cwd == NULL) {
+        LOG_ERROR_EXIT("Can't get current working directory. ERRNO: %d; %s",
+                        errno, strerror(errno));
+    }
+    LOG_DEBUG("Current working directory: %s", cwd);
+
+    if (relative_path == NULL) {
+        LOG_WARNING("No relative_path provided, using current working directory.");
+        LOG_DEBUG("Returning current working directory as full path");
+        return cwd;
+    }
+    
+    const size_t relative_path_len = strlen(relative_path);
+    const size_t cwd_len = strlen(cwd);
+    LOG_DEBUG("Relative path length: %lu, Current working directory length: %lu", relative_path_len, cwd_len);
+
+    const size_t full_path_length = cwd_len + relative_path_len + 2; // +2 for '/' and '\0'
+    char* full_path = cdo_calloc(full_path_length, sizeof(char));
+    const int written_bytes = snprintf(full_path, 
+                                       full_path_length,
+                                       "%s/%s",
+                                       cwd,
+                                       relative_path);
+    if (written_bytes != full_path_length - 1) { // -1 because \0 is not counted
+        LOG_ERROR_EXIT("Full path is broken. Should have length = %lu, actual = %d",
+                        full_path_length, written_bytes);
+    }
+    LOG_DEBUG("Returning full path: %s", full_path);
+
+    free(cwd);
+    return full_path;
+}
+
+
+const char* get_platform_name_from_project(const char* project_path) {
+    return NULL;
+}

src/platform/operations.h

@@ -0,0 +1,10 @@
+#ifndef __PLATFORM_OPERATIONS_H__
+#define __PLATFORM_OPERATIONS_H__
+
+#define PATH_TO_GIT_CONFIG_RELATIVE_TO_PROJ ".git/config"
+
+const char* convert_relative_to_full_path(const char* relative_path);
+const char* get_platform_name_from_project(const char* project_path);
+
+
+#endif /*__PLATFORM_OPERATIONS_H__*/