commit 12423649e1698af298b4caecb14f2a2245a43ba6
Author: Wvader <34067397+wvader@users.noreply.github.com>
Date:   Wed Nov 2 15:25:09 2022 +0000

    Initial commit

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
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+
+.idea/
+*.spv
+
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+CMakeLists.txt.user
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+
+cmake-build-debug
+cmake-build-release
+# Xcode
+.DS_Store
+*/build/*
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+profile
+*.moved-aside
+DerivedData
+.idea/
+*.hmap
+*.xccheckout
+
+#CocoaPods
+Pods
+
+*.xcodeproj
+
+/xproj.screenflow
+/xproj.mp4
+/xproj-narc.psd
+/xproj-narc.gif
+/xproj-arc.psd
+/xproj-arc.gif
+build/*
+cmake-build-*
+RoastEngine.build
+Debug/
+deps/glad
+.version.toml
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diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
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+++ b/CMakeLists.txt
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+cmake_minimum_required(VERSION 3.21)
+project(TestAugeas)
+include_directories(/opt/homebrew/opt/augeas/include/) # Headers para auto-complete?
+link_directories(/opt/homebrew/opt/augeas/lib)
+# Os binarios com as libraries, como é mac .dylib, linux: .SO, etc
+# tive que usar HOMEBREW_NO_INSTALL_CLEANUP=1 "brew install augeas --build-from-source"
+# para ele armazenar o codigo compilado.
+
+set(CMAKE_CXX_STANDARD 14)
+
+add_executable(TestAugeas main.cpp)
+target_link_libraries(TestAugeas augeas) # Se não ele não sabe que é para compilar para ARM64
diff --git a/main.cpp b/main.cpp
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+++ b/main.cpp
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+#include <stdio.h>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <exception>
+#include <stdlib.h>
+#include <unistd.h>
+#include <augeas.h>
+
+// set wifi client data; DHCP, IP, ...
+int setWifiParameter(int DHCP, std::string sIP, std::string sSubnet, std::string sRouter){
+    std::stringstream buffer;
+    buffer << "/etc/network/interfaces" << std::flush; // +++ IMPORTANT: no SLASH at the end of path, otherwise it will not work but there won't be an error message
+    std::string sPathExec = buffer.str();
+    std::cout << "Execution path is: " << sPathExec << std::endl;
+
+    augeas *myAug = NULL;
+    std::string sPath;
+    int ret = 0;
+    int iMatches = 0;
+    unsigned int flags = AUG_NO_MODL_AUTOLOAD;  // AUG_NO_MODL_AUTOLOAD: really do not load // AUG_NO_LOAD: do not load/scan files // 0
+    const char *root = NULL; //sRoot.c_str();
+    const char *path = NULL;
+    char **matches = NULL;
+    const char *value = NULL;
+    char **pathsErrors = NULL;
+
+    // ==================
+    // Initialization of augeas
+    // ==================
+
+    std::cout << std::endl << "Here we start the initialization." << std::endl;
+
+    // Terminal: augtool --noautoload
+    // The flag is set to --noautoload in order to speed up the initialization.
+    // If the flag is not set, the standard config files are loaded which takes a while.
+    // The commands after aug_init() then set the specific files which should be loaded.
+    myAug = aug_init(root, "/usr/share/augeas/lenses", flags);
+
+    // Set lens which should be loaded
+    // Terminal: augtool> set /augeas/load/Interfaces/lens "Interfaces.lns"
+    ret = aug_set(myAug, "/augeas/load/Interfaces/lens", "Interfaces.lns");
+    std::cout << "Set lens: " << ret << std::endl;
+
+    // Set incl(ude) path which should be parsed
+    // Terminal: augtool> set /augeas/load/Interfaces/incl "/etc/network/interfaces"
+    path = sPathExec.c_str();
+    ret = aug_set(myAug, "/augeas/load/Interfaces/incl", path);
+    std::cout << "Set incl: " << ret << std::endl;
+
+    // Load/parse config files
+    // Terminal: augtool> load
+    ret = aug_load(myAug);
+    std::cout << "Load augeas: " << ret << std::endl;
+
+    // Reading and showing error messages
+    iMatches = aug_match(myAug, "/augeas//error/*", &pathsErrors);
+    std::cout << "Number of errors: " << std::to_string(iMatches) << std::endl;
+    for (int j = 0; j < iMatches; j++) {
+        ret = aug_get(myAug, pathsErrors[j], &value);
+        std::cout << pathsErrors[j] << std::endl;
+        if (value!=NULL){
+            std::cout << value << std::endl;
+        }else{
+            std::cout << "Null" << std::endl;
+        }
+    }
+
+    // ==================
+    // Checking for specific nodes
+    // ==================
+
+    std::cout << std::endl << "Here we start searching for a specific node." << std::endl;
+
+    // Check for matches
+    sPath= "/files" + sPathExec + "/iface";
+    path = sPath.c_str();
+    iMatches = aug_match(myAug, path, &matches);
+    std::cout << "Number of matches: " << iMatches << std::endl;
+
+    // Check which network interface is the wifi interface (wlan0)
+    // todo: simplify by using XPath
+    int iWlanInterface = -1;
+
+    std::cout << "The following paths have been found:" << std::endl;
+
+    for (int i=1; i<=iMatches; i++){
+        sPath = "/files" + sPathExec + "/iface[" + std::to_string(i) + "]";
+        std::cout << sPath << std::endl;
+        path = sPath.c_str();
+        const char *value;
+        ret = aug_get(myAug, path, &value);  // todo: ret has to be 1, otherwise value is NULL
+        if (ret==1){
+            buffer.str(std::string()); // clear stream "buffer"
+            buffer << value << std::flush;
+            if (buffer.str()=="wlan0"){
+                iWlanInterface = i;
+                std::cout << "Interface number of wlan0: " << std::to_string(iWlanInterface) << std::endl;
+            }
+        }else{
+            std::cout << "no value" << std::endl;
+        }
+    }
+
+    // ==================
+    // Changing value of nodes
+    // ==================
+
+    std::cout << std::endl << "Here we start changing the value of the node."  <<std::endl;
+
+    // Reading values before changing
+    sPath= "/files" + sPathExec + "/iface[" + std::to_string(iWlanInterface) + "]/method";
+    path = sPath.c_str();
+    ret = aug_get(myAug, path, &value);
+    std::cout << "The value read from node before changing: " << value << std::endl;
+
+    // Terminal: augtool > set /files/home/pi/AugeasDemoC/network/interfaces/iface[3]/method dhcp
+    sPath= "/files" + sPathExec + "/iface[" + std::to_string(iWlanInterface) + "]/method";
+    path = sPath.c_str();
+    ret = aug_set(myAug, path, "dhcp");
+    std::cout << "Set value: " << ret << std::endl;
+
+    // Reading version of augeas
+    ret = aug_get(myAug, "/augeas/version", &value);
+    std::cout << "Augeas version: " << value << std::endl;
+
+    // Reading values; just for debugging
+    sPath= "/files" + sPathExec + "/iface[" + std::to_string(iWlanInterface) + "]/method";
+    path = sPath.c_str();
+    ret = aug_get(myAug, path, &value);
+    std::cout << "The value read from node after changing: " << value << std::endl;
+
+    // ==================
+    // Saving changes back to file
+    // ==================
+
+    std::cout << std::endl << "Here we start saving changes back to files." << std::endl;
+
+    // Set the save mode: overwrite/backup/newfile/noop
+    ret = aug_set(myAug, "/augeas/save", "overwrite");
+    std::cout << "Save mode set: " << ret << std::endl;
+
+    // Reading and showing saved files
+    // Terminal: augtool> print /augeas/events/saved
+    char **pathSaved= NULL;
+    ret = aug_match(myAug, "/augeas/events/saved", &pathSaved);
+    std::cout << "Number of changed files: " << std::to_string(ret) << std::endl;
+    for (int j = 0; j < ret; j++) {
+        aug_get(myAug, pathSaved[j], &value);
+        std::cout << pathSaved[j] << std::endl;
+    }
+
+    // Save the changed config files
+    // Terminal: augtool > save
+    ret = aug_save(myAug);
+    std::cout << "File saved: " << ret << std::endl;
+
+    // Reading and showing saved files
+    // Terminal: augtool> print /augeas/events/saved
+    ret = aug_match(myAug, "/augeas/events/saved", &pathSaved);
+    std::cout << "Number of changed files: " << std::to_string(ret) << std::endl;
+    for (int j = 0; j < ret; j++) {
+        aug_get(myAug, pathSaved[j], &value);
+        std::cout << pathSaved[j] << std::endl;
+    }
+
+    // Reading and showing error messages
+    iMatches = aug_match(myAug, "/augeas//error/*", &pathsErrors);
+    std::cout << "Number of errors: " << std::to_string(iMatches) << std::endl;
+    for (int j = 0; j < iMatches; j++) {
+        ret = aug_get(myAug, pathsErrors[j], &value);
+        std::cout << pathsErrors[j] << std::endl;
+        if (value!=NULL){
+            std::cout << value << std::endl;
+        }else{
+            std::cout << "Null" << std::endl;
+        }
+    }
+
+    aug_close(myAug);
+
+    return 0;
+}
+
+/**
+ * This is the main method which creates and sets consumer instance.
+ * @Looping is essential for this MQTT library to work.
+ * @Exceptions on connection and subscription error.
+ */
+int main(int argc, char *argv[]) {
+
+    // write config files related to wifi
+    int ret = setWifiParameter(1, "192.168.178.123", "255.255.255.0", "192.168.178.1");
+    std::cout << "Return: " << ret << std::endl;
+
+    return 0;
+}
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