Move duplicated utilities to the common util folder and remove NEXT_DIR (#29)

* move things to the common library and remove next_dir

* fix for windows

* one last windows fix

* last fix for real this time

* debug listener test

* fix listener threading bug

common/util/FileUtil.cpp

@@ -1,6 +1,9 @@
 #include "FileUtil.h"
 #include <iostream>
 #include <stdio.h> /* defines FILENAME_MAX */
+#include <fstream>
+#include <sstream>
+#include <cassert>
 
 #ifdef _WIN32
 #include <Windows.h>
@@ -8,7 +11,7 @@
 #include <unistd.h>
 #endif
 
-std::string FileUtil::GetProjectPath() {
+std::string file_util::get_project_path() {
 #ifdef _WIN32
   char buffer[FILENAME_MAX];
   GetModuleFileNameA(NULL, buffer, FILENAME_MAX);
@@ -16,20 +19,21 @@ std::string FileUtil::GetProjectPath() {
       "\\jak-project\\");  // Strip file path down to \jak-project\ directory
   return std::string(buffer).substr(
       0, pos + 12);  // + 12 to include "\jak-project" in the returned filepath
-#else                // do Linux stuff
+#else
+  // do Linux stuff
   char buffer[FILENAME_MAX];
   readlink("/proc/self/exe", buffer,
            FILENAME_MAX);  // /proc/self acts like a "virtual folder" containing information about
                            // the current process
-  std::string::size_type pos = std::string(buffer).find_last_of(
+  std::string::size_type pos = std::string(buffer).rfind(
       "/jak-project/");  // Strip file path down to /jak-project/ directory
   return std::string(buffer).substr(
       0, pos + 12);  // + 12 to include "/jak-project" in the returned filepath
 #endif
 }
 
-std::string FileUtil::get_file_path(const std::vector<std::string>& input) {
-  std::string currentPath = FileUtil::GetProjectPath();
+std::string file_util::get_file_path(const std::vector<std::string>& input) {
+  std::string currentPath = file_util::get_project_path();
   char dirSeparator;
 
 #ifdef _WIN32
@@ -39,9 +43,64 @@ std::string FileUtil::get_file_path(const std::vector<std::string>& input) {
 #endif
 
   std::string filePath = currentPath;
-  for (int i = 0; i < input.size(); i++) {
+  for (int i = 0; i < int(input.size()); i++) {
     filePath = filePath + dirSeparator + input[i];
   }
 
   return filePath;
 }
+
+void file_util::write_binary_file(const std::string& name, void* data, size_t size) {
+  FILE* fp = fopen(name.c_str(), "wb");
+  if (!fp) {
+    throw std::runtime_error("couldn't open file " + name);
+  }
+
+  if (fwrite(data, size, 1, fp) != 1) {
+    throw std::runtime_error("couldn't write file " + name);
+  }
+
+  fclose(fp);
+}
+
+void file_util::write_text_file(const std::string& file_name, const std::string& text) {
+  FILE* fp = fopen(file_name.c_str(), "w");
+  if (!fp) {
+    printf("Failed to fopen %s\n", file_name.c_str());
+    throw std::runtime_error("Failed to open file");
+  }
+  fprintf(fp, "%s\n", text.c_str());
+  fclose(fp);
+}
+
+std::vector<uint8_t> file_util::read_binary_file(const std::string& filename) {
+  auto fp = fopen(filename.c_str(), "rb");
+  if (!fp)
+    throw std::runtime_error("File " + filename + " cannot be opened");
+  fseek(fp, 0, SEEK_END);
+  auto len = ftell(fp);
+  rewind(fp);
+
+  std::vector<uint8_t> data;
+  data.resize(len);
+
+  if (fread(data.data(), len, 1, fp) != 1) {
+    throw std::runtime_error("File " + filename + " cannot be read");
+  }
+
+  return data;
+}
+
+std::string file_util::read_text_file(const std::string& path) {
+  std::ifstream file(path);
+  if (!file.good()) {
+    throw std::runtime_error("couldn't open " + path);
+  }
+  std::stringstream ss;
+  ss << file.rdbuf();
+  return ss.str();
+}
+
+bool file_util::is_printable_char(char c) {
+  return c >= ' ' && c <= '~';
+}