Made source files explicitly specified instead of globbing in cmake files

Moved ftsort sources to bin/ftsort
Moved tape_config.h into bin/ftsort
Implemented command line parsing for ftsort in tape_config.cpp
ftsort binary is in working state

bin/CMakeLists.txt

@@ -1,2 +1,8 @@
-add_executable(ftsort ${PROJECT_SOURCE_DIR}/bin/ftsort.cpp)
+add_compile_definitions(VERSION=${PROJECT_VERSION})
+
+add_executable(ftsort)
+target_sources(ftsort PRIVATE   ftsort/ftsort.cpp
+                                ftsort/tape_config.cpp
+                                ftsort/tape_config.h
+)
 target_link_libraries(ftsort PRIVATE tapelib)

bin/ftsort.cpp

@@ -1,6 +0,0 @@
-#include <iostream>
-
-int main(int argc, char *argv[]) {
-    std::cout << "Hello, World!" << std::endl;
-    return 0;
-}

bin/ftsort/ftsort.cpp

@@ -0,0 +1,26 @@
+#include "filetape.h"
+#include "tape_config.h"
+#include "tape_util.h"
+#include <iostream>
+
+int main(int argc, char *argv[]) {
+    CmdArgs cmd = parse_command_line(argc, argv);
+    if (cmd.version) {
+        std::cout << VERSION_MSG << std::endl;
+        return 0;
+    }
+    if (cmd.help) {
+        std::cerr << HELP_MSG << std::endl;
+        return 0;
+    }
+    tape::FileTape input(cmd.input_file_name, cmd.settings);
+    tape::FileTape output(input, cmd.output_file_name, cmd.settings);
+    // tmp tape factory that captures cmd.settings from local scope
+    tape::TempTapeFactory factory =
+        [&](size_t cells) -> std::unique_ptr<tape::Tape> {
+        return std::make_unique<tape::FileTape>(
+            tape::FileTape(cells, cmd.settings));
+    };
+    tape::external_sort(input, output, factory, cmd.memory_limit);
+    return 0;
+}

bin/ftsort/tape_config.cpp

@@ -0,0 +1,89 @@
+#include "tape_config.h"
+#include <bits/getopt_core.h>
+#include <getopt.h>
+
+const static struct std::vector<option> CMD_OPTS{
+    {.name = "write-delay",
+     .has_arg = no_argument,
+     .flag = nullptr,
+     .val = 'w'},
+    {.name = "read-delay", .has_arg = no_argument, .flag = nullptr, .val = 'r'},
+    {.name = "seek-forward-delay",
+     .has_arg = no_argument,
+     .flag = nullptr,
+     .val = 'f'},
+    {.name = "seek-backwards-delay",
+     .has_arg = no_argument,
+     .flag = nullptr,
+     .val = 'b'},
+    {.name = "memory-limit",
+     .has_arg = no_argument,
+     .flag = nullptr,
+     .val = 'm'},
+    {.name = "config-file",
+     .has_arg = no_argument,
+     .flag = nullptr,
+     .val = 'c'},
+    {.name = "version", .has_arg = no_argument, .flag = nullptr, .val = 'v'},
+    {.name = "help", .has_arg = no_argument, .flag = nullptr, .val = 'h'},
+    {.name = nullptr, .has_arg = no_argument, .flag = nullptr, .val = 0}};
+
+std::chrono::milliseconds parse_delay(const std::string &input) {
+    int delay_ms = std::stoi(input);
+    return std::chrono::milliseconds(delay_ms);
+}
+
+CmdArgs parse_command_line(int argc, char **argv) {
+    CmdArgs cmd{
+        .config_file_path = "",
+        .input_file_name = "",
+        .output_file_name = "",
+        .memory_limit = SIZE_MAX,
+        .version = false,
+        .help = false,
+        .settings = tape::FT_DEFAULT_SETTINGS,
+    };
+    int opt_index = 0;
+    int opt = 0;
+    // parse [OPTIONS...] using getopt_long
+    while ((opt = getopt_long(argc, argv, "r:w:f:b:m:c:vh", CMD_OPTS.data(),
+                              &opt_index)) != -1) {
+        switch (opt) {
+        case 'r':
+            cmd.settings.read_delay = parse_delay(optarg);
+            break;
+        case 'w':
+            cmd.settings.write_delay = parse_delay(optarg);
+            break;
+        case 'f':
+            cmd.settings.seek_forward_delay = parse_delay(optarg);
+            break;
+        case 'b':
+            cmd.settings.seek_backwards_delay = parse_delay(optarg);
+            break;
+        case 'm':
+            cmd.memory_limit = std::stoi(optarg);
+            break;
+        case 'c':
+            cmd.config_file_path = optarg;
+            break;
+        case 'v':
+            cmd.version = true;
+            break;
+        case 'h':
+        case '?':
+        default:
+            cmd.help = true;
+            break;
+        }
+    }
+    // parse positional args INPUT_FILE OUTPUT_FILE
+    if (argc - optind < 2) {
+        cmd.help = true;
+        return cmd;
+    }
+    // no linting to disable pointer arithmetic warning
+    cmd.input_file_name = argv[optind];      // NOLINT
+    cmd.output_file_name = argv[optind + 1]; // NOLINT
+    return cmd;
+}

bin/ftsort/tape_config.h

@@ -0,0 +1,56 @@
+#ifndef TAPE_CONFIG_H
+#define TAPE_CONFIG_H
+
+#include "filetape.h"
+
+// stringizing opearator to convert macro into string literal
+#define xstr(s) str(s)
+#define str(s) #s
+
+const static std::string HELP_MSG =
+    "Usage: ftsort [OPTIONS...] INPUT_FILE OUTPUT_FILE\n"
+    "Sorts a Tape provided by the INPUT_FILE into the OUTPUT_FILE\n\n"
+    "Options:\n"
+    "-w, --write-delay VALUE\t\t\t"
+    "Sets the delay of write operations to VALUE milliseconds\n"
+    "-r, --read-delay VALUE\t\t\t"
+    "Sets the delay of read operations to VALUE milliseconds\n"
+    "-f, --seek-forward-delay VALUE\t\t"
+    "Sets the delay of seeking forward operations to VALUE milliseconds\n"
+    "-b, --seek-backwards-delay VALUE\t"
+    "Sets the delay of seeking backwards operations to VALUE milliseconds\n"
+    "-m, --memory-limit VALUE\t\t"
+    "Sets the amount of cells that the program can store in its memory during "
+    "sorting to VALUE\n"
+    "-c, --config-file FILE\t\t\t"
+    "Applies options from the FILE, config shoud be a simple KEY=VALUE list\n"
+    "-v, --version\t\t\t\t"
+    "Print out version of the program\n"
+    "-h, --help\t\t\t\t"
+    "Print help message\n\n"
+    "Exmaple of valid input Tape file with values 1, 1234 and 2222222222:\n\n"
+    "0000000001\n"
+    "0000001234\n"
+    "2222222222\n\n"
+    "Example of a valid config file:\n\n"
+    "write-delay=100\n"
+    "read-delay=100\n"
+    "seek-forward-delay=100\n"
+    "seek-backwards-delay=100\n"
+    "memory-limit=1024\n";
+
+const static std::string VERSION_MSG = "ftsort ver. " xstr(VERSION);
+
+struct CmdArgs {
+    std::string config_file_path;
+    std::string input_file_name;
+    std::string output_file_name;
+    size_t memory_limit;
+    bool version;
+    bool help;
+    tape::FileTapeSettings settings;
+};
+
+CmdArgs parse_command_line(int argc, char **argv);
+
+#endif // !TAPE_CONFIG_H

include/tapelib/tape_config.h

@@ -1,12 +0,0 @@
-#ifndef TAPE_CONFIG_H
-#define TAPE_CONFIG_H
-
-#include "filetape.h"
-
-namespace tape {
-
-FileTapeSettings init_settings(int argc, char **argv);
-
-} // namespace tape
-
-#endif // !TAPE_CONFIG_H

src/CMakeLists.txt

@@ -1,4 +1,5 @@
-file(GLOB SOURCES CONFIGURE_DEPENDS ${PROJECT_SOURCE_DIR}/src/*.cpp)
-
-add_library(tapelib ${SOURCES})
+add_library(tapelib)
+target_sources(tapelib PRIVATE  filetape.cpp
+                                tape_util.cpp
+)
 target_include_directories(tapelib PUBLIC ${PROJECT_SOURCE_DIR}/include/tapelib)

src/tape_config.cpp

@@ -1,16 +0,0 @@
-#include "tape_config.h"
-
-struct CommandLineArgs {
-    std::string config_file_path;
-    tape::FileTapeSettings settings;
-};
-
-// const static struct Options COMMAND_LINE_OPTIONS[]{};
-
-CommandLineArgs parse_command_line(int argc, char **argv) {
-    return CommandLineArgs{};
-}
-
-tape::FileTapeSettings tape::init_settings(int argc, char **argv) {
-    return FileTapeSettings{};
-}

tests/CMakeLists.txt

@@ -1,12 +1,12 @@
 find_package(Catch2 3 REQUIRED)
 
-add_executable(filetape_tests ${PROJECT_SOURCE_DIR}/tests/filetape_tests.cpp)
+add_executable(filetape_tests filetape_tests.cpp)
 target_link_libraries(filetape_tests PRIVATE tapelib)
 target_link_libraries(filetape_tests PRIVATE Catch2::Catch2WithMain)
 
 add_test(filetape_tests filetape_tests)
 
-add_executable(filetape_sort_tests ${PROJECT_SOURCE_DIR}/tests/filetape_sort_tests.cpp)
+add_executable(filetape_sort_tests filetape_sort_tests.cpp)
 target_link_libraries(filetape_sort_tests PRIVATE tapelib)
 target_link_libraries(filetape_sort_tests PRIVATE Catch2::Catch2WithMain)