INI parser. Cleanup. Prep for INI validation.

This patch addresses several issues:
a) Cleaning unit test to match coding standard
b) Replace tabs with spaces - I do not know where they came
but there were some.
c) Allowing to read file and keep aside a collection
of K-V pairs where key is the key in the INI file and value is the
line number on which line the key apears.
d) There will be different kinds of errors so
error printing function was abstracted.
g) Placeholders for other printing functions have been introduced.

3 files changed, 460 insertions, 189 deletions

diff --git a/common/ini/ini_config.c b/common/ini/ini_config.c
index 7effc0426..0652bd1cf 100644
--- a/common/ini/ini_config.c
+++ b/common/ini/ini_config.c
@@ -46,12 +46,23 @@
 #define FILE_ERROR_SET  "ini_file_error_set"
 
 /* Text error strings used when errors are printed out */
-#define WARNING_TXT        _("Warning")
-#define ERROR_TXT          _("Error")
-#define WRONG_COLLECTION   _("Passed in list is not a list of parse errors.\n")
-#define FAILED_TO_PROCCESS _("Internal Error. Failed to process error list.\n")
-#define ERROR_HEADER       _("Parsing errors and warnings in file: %s\n")
-#define LINE_FORMAT        _("%s (%d) on line %d: %s\n")
+#define WARNING_TXT         _("Warning")
+#define ERROR_TXT           _("Error")
+/* For parse errors */
+#define WRONG_COLLECTION    _("Passed in list is not a list of parse errors.\n")
+#define FAILED_TO_PROCCESS  _("Internal Error. Failed to process error list.\n")
+#define ERROR_HEADER        _("Parsing errors and warnings in file: %s\n")
+/* For grammar errors */
+#define WRONG_GRAMMAR       _("Passed in list is not a list of grammar errors.\n")
+#define FAILED_TO_PROC_G    _("Internal Error. Failed to process list of grammar errors.\n")
+#define ERROR_HEADER_G      _("Logical errors and warnings in file: %s\n")
+/* For validation errors */
+#define WRONG_VALIDATION    _("Passed in list is not a list of validation errors.\n")
+#define FAILED_TO_PROC_V    _("Internal Error. Failed to process list of validation errors.\n")
+#define ERROR_HEADER_V      _("Validation errors and warnings in file: %s\n")
+
+#define LINE_FORMAT         _("%s (%d) on line %d: %s\n")
+
 
 /* Codes that parsing function can return */
 #define RET_PAIR        0
@@ -62,11 +73,13 @@
 #define RET_EOF         5
 #define RET_ERROR       6
 
+/* Different error string functions can be passed as callbacks */
+typedef const char * (*error_fn)(int error);
 
 /* Function to return parsing error */
 inline const char *parsing_error_str(int parsing_error)
 {
-    const char *placeholder= _("Unknown error.");
+    const char *placeholder= _("Unknown pasing error.");
     const char *str_error[] = { _("Data is too long."),
                                 _("No closing bracket."),
                                 _("Section name is missing."),
@@ -83,6 +96,47 @@ inline const char *parsing_error_str(int parsing_error)
             return str_error[parsing_error-1];
 }
 
+/* Function to return grammar error */
+inline const char *grammar_error_str(int grammar_error)
+{
+    const char *placeholder= _("Unknown grammar error.");
+    const char *str_error[] = { _(""),
+                                _(""),
+                                _(""),
+                                _(""),
+                                _(""),
+                                _(""),
+                                _("")
+    };
+
+    /* Check the range */
+    if ((grammar_error < 1) || (grammar_error > ERR_MAXGRAMMAR))
+            return placeholder;
+    else
+            return str_error[grammar_error-1];
+}
+
+/* Function to return validation error */
+inline const char *validation_error_str(int validation_error)
+{
+    const char *placeholder= _("Unknown validation error.");
+    const char *str_error[] = { _(""),
+                                _(""),
+                                _(""),
+                                _(""),
+                                _(""),
+                                _(""),
+                                _("")
+    };
+
+    /* Check the range */
+    if ((validation_error < 1) || (validation_error > ERR_MAXVALID))
+            return placeholder;
+    else
+            return str_error[validation_error-1];
+}
+
+
 /* Internal function to read line from INI file */
 int read_line(FILE *file,
               char *buf,
@@ -100,7 +154,7 @@ static int add_or_update(struct collection_item *current_section,
                          int type)
 {
     int found = COL_NOMATCH;
-	int error;
+    int error;
 
     TRACE_FLOW_STRING("add_or_update", "Entry");
 
@@ -129,7 +183,8 @@ static int add_or_update(struct collection_item *current_section,
 static int ini_to_collection(const char *filename,
                              struct collection_item *ini_config,
                              int error_level,
-                             struct collection_item **error_list)
+                             struct collection_item **error_list,
+                             struct collection_item **lines)
 {
     FILE *file;
     int error;
@@ -178,6 +233,21 @@ static int ini_to_collection(const char *filename,
 
         switch (status) {
         case RET_PAIR:
+            /* Add line to the collection of lines */
+            if (lines) {
+                error = add_int_property(*lines, NULL, key, line);
+                if (error) {
+                    TRACE_ERROR_NUMBER("Failed to add line to line collection", error);
+                    fclose(file);
+                    destroy_collection(current_section);
+                    if (created) {
+                        destroy_collection(*error_list);
+                        *error_list = NULL;
+                    }
+                    return error;
+                }
+            }
+
             /* Do we have a section at the top of the file ? */
             if (section_count == 0) {
                 /* Check if collection already exists */
@@ -221,6 +291,21 @@ static int ini_to_collection(const char *filename,
             break;
 
         case RET_SECTION:
+            /* Add line to the collection of lines */
+            if (lines) {
+                error = add_int_property(*lines, NULL, key, line);
+                if (error) {
+                    TRACE_ERROR_NUMBER("Failed to add line to line collection", error);
+                    fclose(file);
+                    destroy_collection(current_section);
+                    if (created) {
+                        destroy_collection(*error_list);
+                        *error_list = NULL;
+                    }
+                    return error;
+                }
+            }
+
             /* Read a new section */
             destroy_collection(current_section);
             current_section = NULL;
@@ -324,14 +409,38 @@ static int ini_to_collection(const char *filename,
 
 /*********************************************************************/
 /* Read configuration information from a file */
-int config_from_file(const char *application,
+inline int config_from_file(const char *application,
                      const char *config_file,
                      struct collection_item **ini_config,
                      int error_level,
                      struct collection_item **error_list)
 {
     int error;
+
+    TRACE_FLOW_STRING("config_from_file", "Entry");
+    error = config_from_file_with_lines(application,
+                                        config_file,
+                                        ini_config,
+                                        error_level,
+                                        error_list,
+                                        NULL);
+    TRACE_FLOW_NUMBER("config_from_file. Returns", error);
+    return error;
+}
+
+/* Function to read the ini file and have a collection
+ * of which item appers on which line
+ */
+int config_from_file_with_lines(const char *application,
+                                const char *config_file,
+                                struct collection_item **ini_config,
+                                int error_level,
+                                struct collection_item **error_list,
+                                struct collection_item **lines)
+{
+    int error;
     int created = 0;
+    int created_lines = 0;
 
     TRACE_FLOW_STRING("config_from_file", "Entry");
 
@@ -358,14 +467,47 @@ int config_from_file(const char *application,
         return EINVAL;
     }
 
+
+    /* Create collection if needed */
+    if (lines) {
+
+        /* Make sure that the lines collection is empty */
+        if (*lines) {
+            TRACE_ERROR_NUMBER("Collection of lines is not empty", EINVAL);
+            if (created) {
+                destroy_collection(*ini_config);
+                *ini_config = NULL;
+            }
+            return EINVAL;
+        }
+
+        error = create_collection(lines,
+                                  application,
+                                  COL_CLASS_INI_LINES);
+        if (error != EOK) {
+            TRACE_ERROR_NUMBER("Failed to create collection", error);
+            if (created) {
+                destroy_collection(*ini_config);
+                *ini_config = NULL;
+            }
+            return error;
+        }
+        created_lines = 1;
+    }
+
     /* Do the actual work */
     error = ini_to_collection(config_file, *ini_config,
-                              error_level, error_list);
+                              error_level, error_list, lines);
     /* In case of error when we created collection - delete it */
     if (error && created) {
         destroy_collection(*ini_config);
         *ini_config = NULL;
     }
+    /* Also create collection of lines if we created it */
+    if (error && created_lines) {
+        destroy_collection(*lines);
+        *lines = NULL;
+    }
 
     TRACE_FLOW_NUMBER("config_from_file. Returns", error);
     return error;
@@ -439,7 +581,7 @@ int config_for_app(const char *application,
     if (config_file != NULL) {
         TRACE_INFO_STRING("Reading master file:", config_file);
         error = ini_to_collection(config_file, *ini_config,
-                                  error_level, pass_common);
+                                  error_level, pass_common, NULL);
         /* ENOENT and EOK are Ok */
         if (error && (error != ENOENT)) {
             TRACE_ERROR_NUMBER("Failed to read master file", error);
@@ -490,8 +632,8 @@ int config_for_app(const char *application,
         TRACE_INFO_STRING("Opening file:", file_name);
 
         /* Read master file */
-	    error = ini_to_collection(file_name, *ini_config,
-                                  error_level, pass_specific);
+        error = ini_to_collection(file_name, *ini_config,
+                                  error_level, pass_specific, NULL);
         free(file_name);
         /* ENOENT and EOK are Ok */
         if (error && (error != ENOENT)) {
@@ -688,9 +830,16 @@ int read_line(FILE *file,
 }
 
 
-/* Print errors and warnings that were detected while parsing one file */
-void print_file_parsing_errors(FILE *file,
-                               struct collection_item *error_list)
+
+/* Internal function that prints errors */
+static void print_error_list(FILE *file,
+                             struct collection_item *error_list,
+                             int cclass,
+                             char *wrong_col_error,
+                             char *failed_to_process,
+                             char *error_header,
+                             char *line_format,
+                             error_fn error_function)
 {
     struct collection_iterator *iterator;
     int error;
@@ -698,7 +847,7 @@ void print_file_parsing_errors(FILE *file,
     struct parse_error *pe;
     unsigned int count;
 
-    TRACE_FLOW_STRING("print_file_parsing_errors", "Entry");
+    TRACE_FLOW_STRING("print_error_list", "Entry");
 
     /* If we have something to print print it */
     if (error_list == NULL) {
@@ -707,17 +856,17 @@ void print_file_parsing_errors(FILE *file,
     }
 
     /* Make sure we go the right collection */
-    if (!is_of_class(error_list, COL_CLASS_INI_PERROR)) {
-        TRACE_ERROR_STRING("Wrong collection class:", WRONG_COLLECTION);
-        fprintf(file,"%s\n", WRONG_COLLECTION);
+    if (!is_of_class(error_list, cclass)) {
+        TRACE_ERROR_STRING("Wrong collection class:", wrong_col_error);
+        fprintf(file,"%s\n", wrong_col_error);
         return;
     }
 
     /* Bind iterator */
     error =  bind_iterator(&iterator, error_list, COL_TRAVERSE_DEFAULT);
     if (error) {
-        TRACE_ERROR_STRING("Error (bind):", FAILED_TO_PROCCESS);
-        fprintf(file, "%s\n", FAILED_TO_PROCCESS);
+        TRACE_ERROR_STRING("Error (bind):", failed_to_process);
+        fprintf(file, "%s\n", failed_to_process);
         return;
     }
 
@@ -725,8 +874,8 @@ void print_file_parsing_errors(FILE *file,
         /* Loop through a collection */
         error = iterate_collection(iterator, &item);
         if (error) {
-            TRACE_ERROR_STRING("Error (iterate):", FAILED_TO_PROCCESS);
-            fprintf(file, "%s\n", FAILED_TO_PROCCESS);
+            TRACE_ERROR_STRING("Error (iterate):", failed_to_process);
+            fprintf(file, "%s\n", failed_to_process);
             unbind_iterator(iterator);
             return;
         }
@@ -738,17 +887,17 @@ void print_file_parsing_errors(FILE *file,
         if (get_item_type(item) == COL_TYPE_COLLECTION) {
             get_collection_count(item, &count);
             if (count > 1)
-                fprintf(file, ERROR_HEADER, get_item_property(item, NULL));
+                fprintf(file, error_header, get_item_property(item, NULL));
             else break;
         }
         else {
             /* Put error into provided format */
             pe = (struct parse_error *)(get_item_data(item));
-            fprintf(file, LINE_FORMAT,
+            fprintf(file, line_format,
                     get_item_property(item, NULL),      /* Error or warning */
                     pe->error,                          /* Error */
-					pe->line,                           /* Line */
-                    parsing_error_str(pe->error));      /* Error str */
+                    pe->line,                           /* Line */
+                    error_function(pe->error));         /* Error str */
         }
 
     }
@@ -756,9 +905,51 @@ void print_file_parsing_errors(FILE *file,
     /* Do not forget to unbind iterator - otherwise there will be a leak */
     unbind_iterator(iterator);
 
-    TRACE_FLOW_STRING("print_file_parsing_errors", "Exit");
+    TRACE_FLOW_STRING("print_error_list", "Exit");
 }
 
+/* Print errors and warnings that were detected while parsing one file */
+void inline print_file_parsing_errors(FILE *file,
+                                      struct collection_item *error_list)
+{
+    print_error_list(file,
+                     error_list,
+                     COL_CLASS_INI_PERROR,
+                     WRONG_COLLECTION,
+                     FAILED_TO_PROCCESS,
+                     ERROR_HEADER,
+                     LINE_FORMAT,
+                     parsing_error_str);
+}
+
+
+/* Print errors and warnings that were detected while processing grammar */
+void inline print_grammar_errors(FILE *file,
+                                 struct collection_item *error_list)
+{
+    print_error_list(file,
+                     error_list,
+                     COL_CLASS_INI_GERROR,
+                     WRONG_GRAMMAR,
+                     FAILED_TO_PROC_G,
+                     ERROR_HEADER_G,
+                     LINE_FORMAT,
+                     grammar_error_str);
+}
+
+/* Print errors and warnings that were detected while validating INI file. */
+void inline print_validation_errors(FILE *file,
+                                    struct collection_item *error_list)
+{
+    print_error_list(file,
+                     error_list,
+                     COL_CLASS_INI_VERROR,
+                     WRONG_VALIDATION,
+                     FAILED_TO_PROC_V,
+                     ERROR_HEADER_V,
+                     LINE_FORMAT,
+                     validation_error_str);
+}
 
 /* Print errors and warnings that were detected while parsing
  * the whole configuration */
diff --git a/common/ini/ini_config.h b/common/ini/ini_config.h
index 95cd52416..fdf354382 100644
--- a/common/ini/ini_config.h
+++ b/common/ini/ini_config.h
@@ -35,6 +35,9 @@
 #define COL_CLASS_INI_SECTION     COL_CLASS_INI_BASE + 1 /* A one level collection of key value pairs where values are always stings */
 #define COL_CLASS_INI_PERROR      COL_CLASS_INI_BASE + 2 /* A one level collection of parse errors - store parse_error structs */
 #define COL_CLASS_INI_PESET       COL_CLASS_INI_BASE + 3 /* A one level collection of parse error collections */
+#define COL_CLASS_INI_GERROR      COL_CLASS_INI_BASE + 4 /* A one level collection of grammar errors - store parse_error structs */
+#define COL_CLASS_INI_VERROR      COL_CLASS_INI_BASE + 5 /* A one level collection of validation errors - store parse_error structs */
+#define COL_CLASS_INI_LINES       COL_CLASS_INI_BASE + 6 /* A one level collection of lines in INI file */
 
 
 /* Error levels */
@@ -54,6 +57,15 @@
 
 #define ERR_MAXPARSE        ERR_LONGKEY
 
+/* Grammar errors and warnings */
+/* Placeholder for now... */
+#define ERR_MAXGRAMMAR      0
+
+/* Validation errors and warnings */
+/* Placeholder for now... */
+#define ERR_MAXVALID        0
+
+
 
 /* Internal sizes */
 /* FIXME - make them configurable via config.h */
@@ -69,6 +81,19 @@ struct parse_error {
 /* Function to return parsing error */
 const char *parsing_error_str(int parsing_error);
 
+/* Function to return grammar error in template.
+ * This error is returned when the template
+ * is translated into the grammar object.
+ */
+const char *grammar_error_str(int parsing_error);
+
+/* Function to return validation error.
+ * This is the error that it is returned when
+ * the INI file is validated against the
+ * grammar object.
+ */
+const char *validation_error_str(int parsing_error);
+
 /* Read configuration information from a file */
 int config_from_file(const char *application,               /* Name of the application - will be used as name of the collection */
                      const char *config_file,               /* Name of the config file - if NULL the collection will be empty */
@@ -78,6 +103,17 @@ int config_from_file(const char *application,               /* Name of the appli
                      struct collection_item **error_list);  /* List of errors for a file */
 
 
+/* Read configuration information from a file with extra collection of line numbers */
+int config_from_file_with_lines(
+                     const char *application,               /* Name of the application - will be used as name of the collection */
+                     const char *config_file,               /* Name of the config file - if NULL the collection will be empty */
+                     struct collection_item **ini_config,   /* If *ini_config is NULL a new ini object will be allocated, */
+                                                            /* otherwise the one that is pointed to will be updated. */
+                     int error_level,                       /* Error level - break for errors, warnings or best effort (don't break) */
+                     struct collection_item **error_list,   /* List of errors for a file */
+                     struct collection_item **lines);       /* Collection of pairs where key is the key and value is line number */
+
+
 /* Read default config file and then overwrite it with a specific one from the directory */
 int config_for_app(const char *application,               /* Name of the application that will be used to get config for */
                    const char *config_file,               /* Name of the configuration file with default settings for all apps */
@@ -91,6 +127,19 @@ int config_for_app(const char *application,               /* Name of the applica
 void print_file_parsing_errors(FILE *file,                           /* File to send errors to */
                                struct collection_item *error_list);  /* List of parsing errors */
 
+
+/* Print errors and warnings that were detected while
+ * checking grammar of the template.
+ */
+void print_grammar_errors(FILE *file,                           /* File to send errors to */
+                          struct collection_item *error_list);  /* List of grammar errors */
+
+/* Print errors and warnings that were detected while
+ * checking INI file against grammar object.
+ */
+void print_validation_errors(FILE *file,                           /* File to send errors to */
+                             struct collection_item *error_list);  /* List of validation errors */
+
 /* Print errors and warnings that were detected parsing configuration as a whole */
 /* Use this function to print results of the config_for_app() call */
 void print_config_parsing_errors(FILE *file,                           /* File to send errors to */
@@ -118,7 +167,7 @@ int get_config_item(const char *section,                    /* Section. If NULL
                     struct collection_item *ini_config,     /* Collection to search */
                     struct collection_item **item);         /* Item returned. Will be NULL is not found. */
 
-/* Convertion functions for the configuration item.
+/* Conversion functions for the configuration item.
  * Sets error to EINVAL if the item is bad.
  * Sets error to EIO if the conversion failed.
  * These functions do not allocate memory.
@@ -143,7 +192,7 @@ const char *get_const_string_config_value(struct collection_item *item, int *err
 
 /* A get_bin_value and get_xxx_array functions allocate memory.
  * It is the responsibility of the caller to free it after use.
- * free_xxx conviniece wrappers are provided for this purpose.
+ * free_xxx convenience wrappers are provided for this purpose.
  * Functions will return NULL if conversion failed.
  */
 /* A special hex format is assumed.
diff --git a/common/ini/ini_config_ut.c b/common/ini/ini_config_ut.c
index 5441e02c0..9aefbe301 100644
--- a/common/ini/ini_config_ut.c
+++ b/common/ini/ini_config_ut.c
@@ -31,11 +31,12 @@
 int basic_test()
 {
     int error;
-    struct collection_item *ini_config = (struct collection_item *)(NULL);
-    struct collection_item *error_set = (struct collection_item *)(NULL);
+    struct collection_item *ini_config = NULL;
+    struct collection_item *error_set = NULL;
 
-    error = config_for_app("test", "./ini/ini.conf", "./ini/ini.d", &ini_config,INI_STOP_ON_NONE,&error_set);
-    if(error) {
+    error = config_for_app("test", "./ini/ini.conf", "./ini/ini.d",
+                           &ini_config, INI_STOP_ON_NONE, &error_set);
+    if (error) {
         printf("Attempt to read configuration returned error: %d\n",error);
         return error;
     }
@@ -44,10 +45,10 @@ int basic_test()
     print_collection(ini_config);
     print_collection(error_set);
 
-	printf("\n\n----------------------\n");
+    printf("\n\n----------------------\n");
     /* Output parsing errors (if any) */
-    print_config_parsing_errors(stdout,error_set);
-	printf("----------------------\n\n\n");
+    print_config_parsing_errors(stdout, error_set);
+    printf("----------------------\n\n\n");
 
 
     destroy_collection(ini_config);
@@ -58,33 +59,62 @@ int basic_test()
 int single_file()
 {
     int error;
-    struct collection_item *ini_config = (struct collection_item *)(NULL);
-    struct collection_item *error_set = (struct collection_item *)(NULL);
-
-    error = config_from_file("test", "./ini/not_exist_ini.conf", &ini_config,INI_STOP_ON_NONE,&error_set);
-    if(error) {
-        printf("Attempt to read configuration returned error: %d. EXPECTED.\n\n",error);
+    struct collection_item *ini_config = NULL;
+    struct collection_item *error_set = NULL;
+    struct collection_item *lines = NULL;
+
+    error = config_from_file("test", "./ini/not_exist_ini.conf",
+                             &ini_config, INI_STOP_ON_NONE, &error_set);
+    if (error) {
+        printf("Attempt to read configuration returned error: %d. EXPECTED.\n\n", error);
         if(error != ENOENT) return error;
     }
 
-    error = config_from_file("test", "./ini/ini.conf", &ini_config,INI_STOP_ON_NONE,&error_set);
-    if(error) {
+    error = config_from_file("test", "./ini/ini.conf", &ini_config, INI_STOP_ON_NONE, &error_set);
+    if (error) {
         printf("Attempt to read configuration returned error: %d\n",error);
         return error;
     }
 
-    debug_collection(ini_config,COL_TRAVERSE_DEFAULT);
+    debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
     print_collection(ini_config);
     print_collection(error_set);
 
-	printf("\n\n----------------------\n");
+    printf("\n\n----------------------\n");
+    /* Output parsing errors (if any) */
+    print_file_parsing_errors(stdout, error_set);
+    printf("----------------------\n\n\n");
+
+
+    destroy_collection(ini_config);
+    destroy_collection(error_set);
+
+    ini_config = NULL;
+    error_set = NULL;
+
+    printf("TEST WITH LINES\n");
+
+    error = config_from_file_with_lines("test", "./ini/ini.conf",
+                                        &ini_config, INI_STOP_ON_NONE,
+                                        &error_set, &lines);
+    if (error) {
+        printf("Attempt to read configuration returned error: %d\n",error);
+        return error;
+    }
+
+    debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
+    debug_collection(lines, COL_TRAVERSE_DEFAULT);
+
+    printf("\n\n----------------------\n");
     /* Output parsing errors (if any) */
-    print_file_parsing_errors(stdout,error_set);
-	printf("----------------------\n\n\n");
+    print_file_parsing_errors(stdout, error_set);
+    printf("----------------------\n\n\n");
 
 
     destroy_collection(ini_config);
     destroy_collection(error_set);
+    destroy_collection(lines);
+
     return 0;
 }
 
@@ -92,40 +122,40 @@ int negative_test()
 {
     int error;
     unsigned int count;
-    struct collection_item *ini_config = (struct collection_item *)(NULL);
+    struct collection_item *ini_config = NULL;
 
     /* App name is null - expect failure */
-    error = config_for_app(NULL, NULL, NULL, NULL,INI_STOP_ON_NONE,NULL);
-    if(!error) {
+    error = config_for_app(NULL, NULL, NULL, NULL, INI_STOP_ON_NONE, NULL);
+    if (!error) {
         printf("Expected error: %d got success\n",EINVAL);
         return -1;
     }
 
     /* Config collection storage is NULL - expect failure */
-    error = config_for_app("real", NULL, NULL, NULL,INI_STOP_ON_NONE,NULL);
-    if(!error) {
+    error = config_for_app("real", NULL, NULL, NULL, INI_STOP_ON_NONE, NULL);
+    if (!error) {
         printf("Expected error: %d got success\n",EINVAL);
         return -1;
     }
 
     /* Config collection storage is NULL - expect failure */
-    error = config_for_app("real", "real.conf", NULL, NULL,INI_STOP_ON_NONE,NULL);
-    if(!error) {
+    error = config_for_app("real", "real.conf", NULL, NULL, INI_STOP_ON_NONE, NULL);
+    if (!error) {
         printf("Expected error: %d got success\n",EINVAL);
         return -1;
     }
 
     /* Expect success but empty config */
-    error = config_for_app("real", "real.conf", NULL, &ini_config,INI_STOP_ON_NONE,NULL);
-    if(error) {
+    error = config_for_app("real", "real.conf", NULL, &ini_config, INI_STOP_ON_NONE, NULL);
+    if (error) {
         printf("Expected success got error: %d\n",error);
         return error;
     }
 
     count = 0;
-    (void)get_collection_count(ini_config,&count);
-    if(count > 1) {
-        printf("Expected empty collection but got contents with %d elements\n",count);
+    (void)get_collection_count(ini_config, &count);
+    if (count > 1) {
+        printf("Expected empty collection but got contents with %d elements\n", count);
         print_collection(ini_config);
         return -1;
     }
@@ -138,70 +168,72 @@ int negative_test()
 int real_test(const char *file)
 {
     int error;
-    struct collection_item *ini_config = (struct collection_item *)(NULL);
-    struct collection_item *error_set = (struct collection_item *)(NULL);
-    struct collection_iterator *iterator = (struct collection_iterator *)(NULL);
-    struct collection_item *item = (struct collection_item *)(NULL);
+    struct collection_item *ini_config = NULL;
+    struct collection_item *error_set = NULL;
+    struct collection_iterator *iterator = NULL;
+    struct collection_item *item = NULL;
     int type;
 
-	printf("\n\n===== REAL TEST START ======\n");
-	printf("Reading collection\n");
-    error = config_for_app("real", file, "./ini/ini.d", &ini_config,INI_STOP_ON_NONE,&error_set);
-    if(error) {
-        printf("Attempt to read configuration returned error: %d\n",error);
+    printf("\n\n===== REAL TEST START ======\n");
+    printf("Reading collection\n");
+    error = config_for_app("real", file, "./ini/ini.d",
+                           &ini_config, INI_STOP_ON_NONE, &error_set);
+    if (error) {
+        printf("Attempt to read configuration returned error: %d\n", error);
         return error;
     }
 
-	printf("Debugging the config collection:\n");
-    debug_collection(ini_config,COL_TRAVERSE_DEFAULT);
-	printf("Debugging the error collection:\n");
-    debug_collection(error_set,COL_TRAVERSE_DEFAULT);
+    printf("Debugging the config collection:\n");
+    debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
+    printf("Debugging the error collection:\n");
+    debug_collection(error_set, COL_TRAVERSE_DEFAULT);
 
-	printf("About to print parsing errors:\n");
-	printf("\n\n----------------------\n");
+    printf("About to print parsing errors:\n");
+    printf("\n\n----------------------\n");
     /* Output parsing errors (if any) */
-    print_config_parsing_errors(stdout,error_set);
-	printf("----------------------\n\n\n");
+    print_config_parsing_errors(stdout, error_set);
+    printf("----------------------\n\n\n");
 
-	printf("About to bind iterator to print the config file contents.\n");
+    printf("About to bind iterator to print the config file contents.\n");
     /* Bind iterator */
-    error =  bind_iterator(&iterator,ini_config,COL_TRAVERSE_DEFAULT|COL_TRAVERSE_END);
-    if(error) {
+    error =  bind_iterator(&iterator, ini_config,
+                           COL_TRAVERSE_DEFAULT|COL_TRAVERSE_END);
+    if (error) {
         printf("Failed to bind iterator: %d\n",error);
         destroy_collection(ini_config);
         destroy_collection(error_set);
         return error;
     }
 
-	printf("About to start iteration loop.\n");
+    printf("About to start iteration loop.\n");
     do {
         /* Loop through a collection */
         error = iterate_collection(iterator, &item);
-        if(error) {
-            printf("Error iterating collection: %d",error);
+        if (error) {
+            printf("Error iterating collection: %d", error);
             unbind_iterator(iterator);
             return error;
         }
 
         /* Are we done ? */
-        if(item == (struct collection_item *)(NULL)) break;
+        if (item == (struct collection_item *)(NULL)) break;
 
         type = get_item_type(item);
 
         /* Start of the collection */
-        if(type == COL_TYPE_COLLECTION)
-            printf("Contents of the configuration for application %s\n",get_item_property(item,NULL));
+        if (type == COL_TYPE_COLLECTION)
+            printf("Contents of the configuration for application %s\n", get_item_property(item, NULL));
         /* End of section */
-        else if(type == COL_TYPE_END) printf("\n");
+        else if (type == COL_TYPE_END) printf("\n");
         /* Section header ? */
-        else if(type == COL_TYPE_COLLECTIONREF) printf("[%s]\n",get_item_property(item,NULL));
+        else if (type == COL_TYPE_COLLECTIONREF) printf("[%s]\n", get_item_property(item, NULL));
         /* Anything else - we know they are all strings*/
-        else printf("%s = %s\n",get_item_property(item,NULL), (char *)get_item_data(item));
+        else printf("%s = %s\n", get_item_property(item, NULL), (char *)get_item_data(item));
     }
     while(1);
 
     /* Do not forget to unbind iterator - otherwise there will be a leak */
-	printf("About to clean up.\n");
+    printf("About to clean up.\n");
     unbind_iterator(iterator);
 
     destroy_collection(ini_config);
@@ -228,40 +260,41 @@ int get_test()
     void *binary;
     int length;
     int i;
-	char **strarray;
+    char **strarray;
     char **strptr;
     int size;
     long *array;
     double *darray;
     char **prop_array;
 
-	printf("\n\n===== GET TEST START ======\n");
-	printf("Reading collection\n");
-    error = config_for_app("real", NULL, "./ini/ini.d", &ini_config,INI_STOP_ON_NONE,&error_set);
-    if(error) {
-        printf("Attempt to read configuration returned error: %d\n",error);
+    printf("\n\n===== GET TEST START ======\n");
+    printf("Reading collection\n");
+    error = config_for_app("real", NULL, "./ini/ini.d",
+                           &ini_config, INI_STOP_ON_NONE, &error_set);
+    if (error) {
+        printf("Attempt to read configuration returned error: %d\n", error);
         return error;
     }
 
-	printf("Debugging the config collection:\n");
-    debug_collection(ini_config,COL_TRAVERSE_DEFAULT);
-	printf("Debugging the error collection:\n");
-    debug_collection(error_set,COL_TRAVERSE_DEFAULT);
+    printf("Debugging the config collection:\n");
+    debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
+    printf("Debugging the error collection:\n");
+    debug_collection(error_set, COL_TRAVERSE_DEFAULT);
     destroy_collection(error_set);
 
     printf("Negtive test - trying to get non existing key-value pair.\n");
 
     /* Negative test */
     item = (struct collection_item *)(NULL);
-    error = get_config_item("monitor1","description1", ini_config, &item);
-    if(error) {
-        printf("Expected success but got error! %d\n",error);
+    error = get_config_item("monitor1", "description1", ini_config, &item);
+    if (error) {
+        printf("Expected success but got error! %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Item should not be found */
-    if(item != (struct collection_item *)(NULL)) {
+    if (item != (struct collection_item *)(NULL)) {
         printf("Expected NULL but got something else!\n");
         destroy_collection(ini_config);
         return -1;
@@ -269,9 +302,9 @@ int get_test()
 
     /* Another negative test but section exists this time */
     item = (struct collection_item *)(NULL);
-    error = get_config_item("monitor","description1", ini_config, &item);
-    if(error) {
-        printf("Expected success but got error! %d\n",error);
+    error = get_config_item("monitor", "description1", ini_config, &item);
+    if (error) {
+        printf("Expected success but got error! %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
@@ -287,15 +320,15 @@ int get_test()
 
     /* Positive test */
     item = (struct collection_item *)(NULL);
-    error = get_config_item("monitor","description", ini_config, &item);
-    if(error) {
-        printf("Expected success but got error! %d\n",error);
+    error = get_config_item("monitor", "description", ini_config, &item);
+    if (error) {
+        printf("Expected success but got error! %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Item should be found */
-    if(item == (struct collection_item *)(NULL)) {
+    if (item == (struct collection_item *)(NULL)) {
         printf("Expected item but got something NULL!\n");
         destroy_collection(ini_config);
         return -1;
@@ -308,7 +341,7 @@ int get_test()
     /* Get a string without duplicication */
     /* Negative test */
     cstrn = get_const_string_config_value(NULL, NULL);
-    if(cstrn != NULL) {
+    if (cstrn != NULL) {
         printf("Expected error got success.\n");
         destroy_collection(ini_config);
         return -1;
@@ -319,13 +352,13 @@ int get_test()
     /* Now get string from the right item */
     error = 0;
     cstr = get_const_string_config_value(item, &error);
-    if(error) {
-        printf("Expected success got error %d.\n",error);
+    if (error) {
+        printf("Expected success got error %d.\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
-    printf("Value: [%s]\n",cstr);
+    printf("Value: [%s]\n", cstr);
 
     /* Same thing but create a dup */
 
@@ -333,13 +366,13 @@ int get_test()
 
     error = 0;
     str = get_string_config_value(item, &error);
-    if(error) {
-        printf("Expected success got error %d.\n",error);
+    if (error) {
+        printf("Expected success got error %d.\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
-    printf("Value: [%s]\n",str);
+    printf("Value: [%s]\n", str);
     free(str);
 
 
@@ -347,15 +380,15 @@ int get_test()
     printf("Convert item to number with strict conversion.\n");
 
     item = (struct collection_item *)(NULL);
-    error = get_config_item("monitor","bad_number", ini_config, &item);
-    if(error) {
-        printf("Expected success but got error! %d\n",error);
+    error = get_config_item("monitor", "bad_number", ini_config, &item);
+    if (error) {
+        printf("Expected success but got error! %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Item should be found */
-    if(item == (struct collection_item *)(NULL)) {
+    if (item == (struct collection_item *)(NULL)) {
         printf("Expected item but got something NULL!\n");
         destroy_collection(ini_config);
         return -1;
@@ -367,7 +400,7 @@ int get_test()
     /* Now try to get value in different ways */
     error = 0;
     number = get_int_config_value(item, 1, 10, &error);
-    if(error) {
+    if (error) {
         /* We expected error in this case */
         printf("Expected error.\n");
         if(number != 10) {
@@ -382,36 +415,34 @@ int get_test()
     error = 0;
     number = 1;
     number = get_int_config_value(item, 0, 10, &error);
-    if(error) {
+    if (error) {
         /* We expected error in this case */
         printf("Did not expect error.\n");
         destroy_collection(ini_config);
         return error;
     }
 
-    if(number != 5) {
+    if (number != 5) {
         /* We expected error in this case */
         printf("We expected that the conversion will return 5.\n");
         destroy_collection(ini_config);
         return -1;
     }
 
-
-
     /* Get real integer */
 
     printf("Fetch another item from section \"domains/LOCAL\" named \"enumerate\".\n");
 
     item = (struct collection_item *)(NULL);
     error = get_config_item("domains/LOCAL","enumerate", ini_config, &item);
-    if(error) {
-        printf("Expected success but got error! %d\n",error);
+    if (error) {
+        printf("Expected success but got error! %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Item should be found */
-    if(item == (struct collection_item *)(NULL)) {
+    if (item == (struct collection_item *)(NULL)) {
         printf("Expected success but got NULL.\n");
         destroy_collection(ini_config);
         return -1;
@@ -422,14 +453,14 @@ int get_test()
     /* Take number out of it */
     error = 0;
     number = get_int_config_value(item, 1, 100, &error);
-    if(error) {
-        printf("Did not expect error. Got %d\n",error);
+    if (error) {
+        printf("Did not expect error. Got %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* It is 3 in the file */
-    if(number != 3) {
+    if (number != 3) {
         printf("We expected that the conversion will return 3.\n");
         destroy_collection(ini_config);
         return -1;
@@ -442,14 +473,14 @@ int get_test()
     /* Take number out of it */
     error = 0;
     number_long = get_long_config_value(item, 1, 100, &error);
-    if(error) {
-        printf("Did not expect error. Got %d\n",error);
+    if (error) {
+        printf("Did not expect error. Got %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* It is 3 in the file */
-    if(number_long != 3) {
+    if (number_long != 3) {
         printf("We expected that the conversion will return 3.\n");
         destroy_collection(ini_config);
         return -1;
@@ -462,8 +493,8 @@ int get_test()
     /* Take number out of it */
     error = 0;
     number_unsigned = get_unsigned_config_value(item, 1, 100, &error);
-    if(error) {
-        printf("Did not expect error. Got %d\n",error);
+    if (error) {
+        printf("Did not expect error. Got %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
@@ -482,14 +513,14 @@ int get_test()
     /* Take number out of it */
     error = 0;
     number_ulong = get_ulong_config_value(item, 1, 100, &error);
-    if(error) {
-        printf("Did not expect error. Got %d\n",error);
+    if (error) {
+        printf("Did not expect error. Got %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* It is 3 in the file */
-    if(number_ulong != 3) {
+    if (number_ulong != 3) {
         printf("We expected that the conversion will return 3.\n");
         destroy_collection(ini_config);
         return -1;
@@ -502,14 +533,14 @@ int get_test()
     /* Take number out of it */
     error = 0;
     number_double = get_double_config_value(item, 1, 100., &error);
-    if(error) {
-        printf("Did not expect error. Got %d\n",error);
+    if (error) {
+        printf("Did not expect error. Got %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* It is 3 in the file */
-    if(number_double != 3.) {
+    if (number_double != 3.) {
         printf("We expected that the conversion will return 3.\n");
         destroy_collection(ini_config);
         return -1;
@@ -522,7 +553,7 @@ int get_test()
     /* Take number out of it */
     error = 0;
     logical = get_bool_config_value(item, 1, &error);
-    if(!error) {
+    if (!error) {
         printf("Expect error. Got success.\n");
         destroy_collection(ini_config);
         return -1;
@@ -533,14 +564,14 @@ int get_test()
 
     item = (struct collection_item *)(NULL);
     error = get_config_item("domains/LOCAL","legacy", ini_config, &item);
-    if(error) {
+    if (error) {
         printf("Expected success but got error! %d\n",error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Item should be found */
-    if(item == (struct collection_item *)(NULL)) {
+    if (item == (struct collection_item *)(NULL)) {
         printf("Expected success but got NULL.\n");
         destroy_collection(ini_config);
         return -1;
@@ -550,13 +581,13 @@ int get_test()
 
     error = 0;
     logical = get_bool_config_value(item, 1, &error);
-    if(error) {
-        printf("Expect success got error %d.\n",error);
+    if (error) {
+        printf("Expect success got error %d.\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
-    if(logical) {
+    if (logical) {
         printf("Expected false but got true - bad.\n");
         return -1;
     }
@@ -567,14 +598,14 @@ int get_test()
 
     item = (struct collection_item *)(NULL);
     error = get_config_item("domains/EXAMPLE.COM","binary_test", ini_config, &item);
-    if(error) {
-        printf("Expected success but got error! %d\n",error);
+    if (error) {
+        printf("Expected success but got error! %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Item should be found */
-    if(item == (struct collection_item *)(NULL)) {
+    if (item == (struct collection_item *)(NULL)) {
         printf("Expected success but got NULL.\n");
         destroy_collection(ini_config);
         return -1;
@@ -584,14 +615,14 @@ int get_test()
 
     error = 0;
     binary = get_bin_config_value(item, &length, &error);
-    if(error) {
-        printf("Expect success got error %d.\n",error);
+    if (error) {
+        printf("Expect success got error %d.\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     printf("Binary value (expect 123) = ");
-    for(i=0;i<length;i++) {
+    for (i=0;i<length;i++) {
         printf("%d",*((unsigned char*)(binary)+i));
     }
     printf("\n");
@@ -601,7 +632,7 @@ int get_test()
     printf("Get string array item\n");
 
     item = (struct collection_item *)(NULL);
-    error = get_config_item("domains","domainsorder", ini_config, &item);
+    error = get_config_item("domains", "domainsorder", ini_config, &item);
     if(error) {
         printf("Expected success but got error! %d\n",error);
         destroy_collection(ini_config);
@@ -609,7 +640,7 @@ int get_test()
     }
 
     /* Item should be found */
-    if(item == (struct collection_item *)(NULL)) {
+    if (item == (struct collection_item *)(NULL)) {
         printf("Expected success but got NULL.\n");
         destroy_collection(ini_config);
         return -1;
@@ -621,15 +652,15 @@ int get_test()
 
     error = 0;
     strarray = get_string_config_array(item, ",", NULL, &error);
-    if(error) {
-        printf("Expect success got error %d.\n",error);
+    if (error) {
+        printf("Expect success got error %d.\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Can be used with this cycle */
     strptr = strarray;
-    while(*strptr != NULL) {
+    while (*strptr != NULL) {
         printf("[%s]\n",*strptr);
         strptr++;
     }
@@ -641,29 +672,29 @@ int get_test()
     error = 0;
     size = 0;
     strarray = get_string_config_array(item, ",", &size, &error);
-    if(error) {
-        printf("Expect success got error %d.\n",error);
+    if (error) {
+        printf("Expect success got error %d.\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Can be used with this cycle */
-    for(i=0;i<size;i++) printf("[%s]\n",*(strarray + i));
+    for (i=0;i<size;i++) printf("[%s]\n",*(strarray + i));
 
     free_string_config_array(strarray);
 
     printf("Get long array item\n");
 
     item = (struct collection_item *)(NULL);
-    error = get_config_item("domains/EXAMPLE.COM","long_array", ini_config, &item);
+    error = get_config_item("domains/EXAMPLE.COM", "long_array", ini_config, &item);
     if(error) {
-        printf("Expected success but got error! %d\n",error);
+        printf("Expected success but got error! %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Item should be found */
-    if(item == (struct collection_item *)(NULL)) {
+    if (item == (struct collection_item *)(NULL)) {
         printf("Expected success but got NULL.\n");
         destroy_collection(ini_config);
         return -1;
@@ -675,28 +706,28 @@ int get_test()
     size = 0; /* Here size is not optional!!! */
     array = get_long_config_array(item, &size, &error);
     if(error) {
-        printf("Expect success got error %d.\n",error);
+        printf("Expect success got error %d.\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Can be used with this cycle */
-    for(i=0;i<size;i++) printf("%ld\n",*(array + i));
+    for (i=0;i<size;i++) printf("%ld\n", *(array + i));
 
     free_long_config_array(array);
 
     printf("Get double array item\n");
 
     item = (struct collection_item *)(NULL);
-    error = get_config_item("domains/EXAMPLE.COM","double_array", ini_config, &item);
-    if(error) {
-        printf("Expected success but got error! %d\n",error);
+    error = get_config_item("domains/EXAMPLE.COM", "double_array", ini_config, &item);
+    if (error) {
+        printf("Expected success but got error! %d\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Item should be found */
-    if(item == (struct collection_item *)(NULL)) {
+    if (item == (struct collection_item *)(NULL)) {
         printf("Expected success but got NULL.\n");
         destroy_collection(ini_config);
         return -1;
@@ -707,21 +738,21 @@ int get_test()
     error = 0;
     size = 0; /* Here size is not optional!!! */
     darray = get_double_config_array(item, &size, &error);
-    if(error) {
-        printf("Expect success got error %d.\n",error);
+    if (error) {
+        printf("Expect success got error %d.\n", error);
         destroy_collection(ini_config);
         return error;
     }
 
     /* Can be used with this cycle */
-    for(i=0;i<size;i++) printf("%.4f\n",darray[i]);
+    for (i=0;i<size;i++) printf("%.4f\n", darray[i]);
 
     free_double_config_array(darray);
 
     printf("\n\nSection list - no size\n");
 
     /* Do not care about the error or size */
-    prop_array = get_section_list(ini_config,NULL,NULL);
+    prop_array = get_section_list(ini_config, NULL, NULL);
     if (prop_array == NULL) {
         printf("Expect success got error.\n");
         destroy_collection(ini_config);
@@ -730,8 +761,8 @@ int get_test()
 
     i = 0;
     while (prop_array[i]) {
-		printf("Section: [%s]\n", prop_array[i]);
-		i++;
+        printf("Section: [%s]\n", prop_array[i]);
+        i++;
     }
     free_section_list(prop_array);
 
@@ -770,13 +801,13 @@ int main()
 {
     int error;
 
-    if((error=basic_test()) ||
-       (error=single_file()) ||
-       (error=real_test(NULL)) ||
-		/* This should result in merged configuration */
-       (error=real_test("./ini/ini.conf")) ||
-       (error= get_test())) {
-        printf("Test failed! Error %d.\n",error);
+    if ((error = basic_test()) ||
+        (error = single_file()) ||
+        (error = real_test(NULL)) ||
+         /* This should result in merged configuration */
+        (error = real_test("./ini/ini.conf")) ||
+        (error = get_test())) {
+        printf("Test failed! Error %d.\n", error);
         return -1;
     }
     printf("Success!\n");