prefer snake case

main.cpp

@@ -8,7 +8,7 @@ inline bool path_exists (const std::string& name) {
     return (stat (name.c_str(), &buffer) == 0);
 }
 
-CLAPI void* initAug(augSettings settings, int flags) {
+CLAPI void* init_aug(augSettings settings, int flags) {
 
     if(!path_exists(std::string(settings.root))) {
         std::cout << "error: root path is invalid." << settings.root << std::endl;
@@ -18,12 +18,17 @@ CLAPI void* initAug(augSettings settings, int flags) {
     return aug_init(settings.root, settings.loadPath, flags);
 }
 
-CLAPI void closeAug(void* aug) {
+CLAPI void close_aug(void* aug) {
     aug_close((augeas *) aug);
 }
 
-// Wrapper of aug_preview
+bool load_file(void* aug, const char* filePath) {
-CLAPI void printPreview(augeas* aug, const char* matchPath, const char* filePath) {
+    int r = aug_load_file((augeas *) aug,filePath);
+    return r == 0;
+}
+
+
+CLAPI void print_preview(augeas* aug, const char* matchPath, const char* filePath) {
 
     if(aug == nullptr) {
         std::cout << "error: augeas is not initialized." << std::endl;
@@ -32,17 +37,6 @@ CLAPI void printPreview(augeas* aug, const char* matchPath, const char* filePath
 
     int r;
     char *s;
-    char *etc_hosts_fn = nullptr;
-    FILE *hosts_fp = nullptr;
-    char *hosts_txt = nullptr;
-
-    
-    r = aug_load_file(aug,filePath);
-
-    if(r != 0) {
-        std::cout << "Error loading file." << std::endl;
-        return;
-    }
 
     r = aug_preview(aug,matchPath,&s);
 
@@ -53,13 +47,12 @@ CLAPI void printPreview(augeas* aug, const char* matchPath, const char* filePath
 
     std::cout << s << std::endl;
 
-    free(hosts_txt);
     free(s);
 }
 
 
 // Print tree of the matchPath
-CLAPI void printAugTree(
+CLAPI void print_tree(
         augeas *aug,
         const char* matchPath,
         const char* filePath
@@ -74,13 +67,6 @@ CLAPI void printAugTree(
     
     FILE *out = tmpfile();
 
-    r = aug_load_file(aug, filePath);
- 
-    if(r != 0) {
-        std::cout << "error: can't load file." << std::endl;
-        return;
-    }
-
     r = aug_print(aug, out,matchPath);
 
     if(r != 0) {
@@ -125,4 +111,31 @@ CLAPI void printAugTree(
 
 }
 
+CLAPI const char* get_node(augeas* aug, char* path ) {
+
+    const char *value;
+
+    /*
+     * Return 1 if there is exactly one node matching PATH,
+     * 0 if there is none, and a negative value
+     * if there is more than one node matching PATH,
+     * or if PATH is not a legal path expression.
+     *
+     * The string *value must not be freed by the caller,
+     * and is valid as long as its node remains unchanged.
+     */
+
+    int rc = aug_get(aug, path, &value);
+    if (1 == rc) {
+        if (nullptr != value) {
+            return value;
+        } else {
+            return "NIL";
+        }
+
+    } else {
+        return "NIL";
+    }
+}
+
 }

main.h

@@ -13,15 +13,21 @@
 
 extern "C" {
 
-CLAPI void* initAug             (augSettings settings, int flags);
+CLAPI void* init_aug             (augSettings settings, int flags);
 
-CLAPI void  printPreview         (augeas* aug,
+CLAPI void  print_preview         (augeas* aug,
                                    const char* matchPath,
                                    const char* filePath);
 
-CLAPI void  printAugTree         (augeas* aug,
+CLAPI void  print_tree         (augeas* aug,
                                 const char* matchPath,
                                 const char* filePath);
 
-CLAPI void closeAug              (void* aug);
+CLAPI const char* get_node      (augeas* aug, char* path );
+
+
+
+CLAPI void close_aug              (void* aug);
+
+
 }