Initial commit

.gitignore

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+# Exclude binaries from porject root
+*
+!/**/
+!*.*
+![Mm]akefile
+
+# Temporary exclude test datasets
+/test/
+
+# ---> C
+# Prerequisites
+*.d
+# Object files
+*.o
+*.ko
+*.obj
+*.elf
+# Linker output
+*.ilk
+*.map
+*.exp
+# Precompiled Headers
+*.gch
+*.pch
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+# Kernel Module Compile Results
+*.mod*
+*.cmd
+.tmp_versions/
+modules.order
+Module.symvers
+Mkfile.old
+dkms.conf
+# ---> C++
+# Prerequisites
+*.d
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+# Precompiled Headers
+*.gch
+*.pch
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+# Fortran module files
+*.mod
+*.smod
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+# Executables
+*.exe
+*.out
+*.app
+# ---> VisualStudioCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+!.vscode/*.code-snippets
+# Local History for Visual Studio Code
+.history/
+# Built Visual Studio Code Extensions
+*.vsix
+

.vscode/extensions.json

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+{
+    "recommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "(gdb) Launch",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/app",
+            "args": [],
+            "stopAtEntry": false,
+            "cwd": "${fileDirname}",
+            "environment": [],
+            "externalConsole": false,
+            "MIMode": "gdb",
+            "setupCommands": [
+                {
+                    "description": "Enable pretty-printing for gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                },
+                {
+                    "description": "Set Disassembly Flavor to Intel",
+                    "text": "-gdb-set disassembly-flavor intel",
+                    "ignoreFailures": true
+                }
+            ]
+        }
+
+    ]
+}

.vscode/settings.json

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+{
+    "files.associations": {
+        "*.am": "makefile",
+        "*.ac": "makefile",
+        "*.c": "c",
+        "*.h": "c",
+        "*.cpp": "cpp",
+        "*.hpp": "cpp"
+    },
+    "makefile.launchConfigurations": [
+        {
+            "cwd": "${workspaceFolder}",
+            "binaryPath": "${workspaceFolder}/app",
+            "binaryArgs": []
+        }
+    ],
+    "editor.rulers": [
+        {
+            "column": 80
+        },
+        {
+            "column": 120,
+            "color": "#9f0af5"
+        }
+    ],
+}

.vscode/tasks.json

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+{
+    "tasks": [
+        {
+            "type": "cppbuild",
+            "label": "C/C++: gcc build active file",
+            "command": "gcc",
+            "args": [
+                "-fdiagnostics-color=always",
+                "-g",
+                "${file}",
+                "-o",
+                "${fileDirname}/${fileBasenameNoExtension}"
+            ],
+            "options": {
+                "cwd": "${fileDirname}"
+            },
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": false
+            },
+            "detail": "Task generated by Debugger."
+        },
+        {
+            "label": "make",
+            "type": "shell",
+            "command": "make",
+            "problemMatcher": [],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        },
+    ],
+    "version": "2.0.0"
+}

README.md

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+# Header
+
+Description
+
+## Сборка проекта
+
+Для сборки программы достаточно вызвать команду `make`, находясь в каталоге проекта.
+
+```shell
+$ cd $project_path
+$ make
+```
+
+В Visual Studio Code команда сборки может быть вызвана комбинацией клавиш: `Ctrl + Shift + B`.
+
+Также, сборка автоматически выполняется при запуске отладки проекта, к примеру, при нажатии клавиши `F5` или выполнения команды запуска из интерфейса.

main.c

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+#include "main.h"
+
+#include <alloca.h>
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h> // Получение опций командной строки
+#include <locale.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+const char *program_name = NULL;
+static int exit_status;
+static int d_opt = 0;
+
+static int print(const void *buf, size_t count)
+{
+	int fd_std_out = fcntl(STDOUT_FILENO, F_DUPFD, 0);
+	write(fd_std_out, buf, count);
+	close(fd_std_out);
+}
+
+static void test_sleep()
+{
+	int err = 0;
+	err = sleep(3);
+	printf("Err: %d\n", err);
+	assert(err == 0);
+}
+
+static void set_program_name(const char *argv0)
+{
+	program_name = argv0;
+}
+
+static void usage(int status)
+{
+	const char const msg_usage_fmt[] = "Usage: %s [OPTION]... [FILE]...\n";
+	const char const msg_help[] = "\
+Program nothin to do while, this is just dirty example.\n\
+Arguments\n\
+      --h        display this help and exit\n";
+
+	char * restrict msg_buf;
+	size_t size;
+
+	// Allocate enough memory on function stack for usage message
+	size = strlen(program_name) + sizeof(msg_usage_fmt) - 2;
+	msg_buf = alloca(size);
+
+	size = snprintf(msg_buf, size, msg_usage_fmt, program_name);
+	write(STDOUT_FILENO, msg_buf, sizeof(msg_buf[0]) * size);
+
+	// Print usage help message
+	write(STDOUT_FILENO, msg_help, sizeof(msg_help));
+}
+
+static int decode_switches(int argc, char **argv)
+{
+	int c;
+
+	while (1)
+	{
+		c = getopt(argc, argv, "h");
+		if (c == -1)
+			break;
+		
+		switch (c)
+		{
+		case 'h':
+			usage(EXIT_SUCCESS);
+			break;
+
+		default:
+			break;
+		}
+	}
+	
+	return optind;
+}
+
+static void close_stdout(void)
+{
+	close(STDOUT_FILENO);
+}
+
+int main(int argc, char *argv[])
+{
+	int fd_std_out;
+	int i;
+
+	const size_t msg_maxlen = 255;
+	char msg[msg_maxlen + 1];
+
+	set_program_name(argv[0]);
+	setlocale(LC_ALL, "");
+	atexit(close_stdout);
+
+	exit_status = EXIT_SUCCESS;
+
+	i = decode_switches (argc, argv);
+	printf("Обработано аргументов: %d\n", i);
+
+	const char const msg_fmt_argv_handled[] = "Обработано аргументов: %d\n";
+	size_t size;
+	size = snprintf(msg, msg_maxlen, msg_fmt_argv_handled, i);
+	write(STDOUT_FILENO, msg, sizeof(msg[0]) * size);
+
+	// Duplicate descriptor
+	fd_std_out = fcntl(STDOUT_FILENO, F_DUPFD, 0);
+	assert(fd_std_out != -1);
+
+	const char const msg_example[] = "Функциональность приложения не реализована\n";
+	write(STDERR_FILENO, msg_example, sizeof(msg_example)-1);
+
+	/*{
+		const char const * err_str = "WARN\n";
+		write(STDOUT_FILENO, err_str, sizeof(err_str));
+	}*/
+
+	close(fd_std_out);
+
+	return exit_status;
+}

main.h

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+#ifndef APP_MAIN_H
+#define APP_MAIN_H
+
+
+
+#endif /* APP_MAIN_H */

makefile

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+TARGET = $(basename $(notdir $(PWD)))
+TARGET = app
+OBJECTS = main.o
+
+VPATH = src
+
+CFLAGS += -g
+#CFLAGS += -fdiagnostics-color=always
+#LDLIBS=-lstdc++
+
+#OBJECTS := $(addprefix obj/, $(OBJECTS))
+
+.SUFFIXES:
+.SUFFIXES: .out .a .ln .o .c .cc .C .cpp .m .s .S .sym .def .h
+
+.PHONY: all clean test
+
+all: $(TARGET)
+
+$(TARGET): $(OBJECTS)
+	$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@
+
+clean:
+	$(RM) $(OBJECTS) $(TARGET)
+
+test:
+	@echo $(TARGET)
+	@echo $(OBJECTS)