*: moved error handling to src/common/

17 files changed, 217 insertions, 177 deletions

diff --git a/src/blogc/datetime-parser.c b/src/blogc/datetime-parser.c
index a685c77..2fd3b4f 100644
--- a/src/blogc/datetime-parser.c
+++ b/src/blogc/datetime-parser.c
@@ -16,8 +16,9 @@
 
 #include <string.h>
 
-#include "error.h"
 #include "datetime-parser.h"
+#include "errors.h"
+#include "../common/error.h"
 #include "../common/utils.h"
 
 
@@ -47,14 +48,14 @@ typedef enum {
 
 char*
 blogc_convert_datetime(const char *orig, const char *format,
-    blogc_error_t **err)
+    bc_error_t **err)
 {
     if (err == NULL || *err != NULL)
         return NULL;
 
 #ifndef HAVE_TIME_H
 
-    *err = blogc_error_new(BLOGC_WARNING_DATETIME_PARSER,
+    *err = bc_error_new(BLOGC_WARNING_DATETIME_PARSER,
         "Your operating system does not supports the datetime functionalities "
         "used by blogc. Sorry.");
     return NULL;
@@ -80,7 +81,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_SECOND_YEAR;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid first digit of year. "
                     "Found '%c', must be integer >= 0 and <= 9.", c);
                 break;
@@ -91,7 +92,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_THIRD_YEAR;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid second digit of year. "
                     "Found '%c', must be integer >= 0 and <= 9.", c);
                 break;
@@ -102,7 +103,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_FOURTH_YEAR;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid third digit of year. "
                     "Found '%c', must be integer >= 0 and <= 9.", c);
                 break;
@@ -111,7 +112,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                 if (c >= '0' && c <= '9') {
                     tmp += c - diff - 1900;
                     if (tmp < 0) {
-                        *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                        *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                             "Invalid year. Found %d, must be >= 1900.",
                             tmp + 1900);
                         break;
@@ -120,7 +121,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_FIRST_HYPHEN;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid fourth digit of year. "
                     "Found '%c', must be integer >= 0 and <= 9.", c);
                 break;
@@ -131,7 +132,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_FIRST_MONTH;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid separator between year and month. "
                     "Found '%c', must be '-'.", c);
                 break;
@@ -142,7 +143,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_SECOND_MONTH;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid first digit of month. "
                     "Found '%c', must be integer >= 0 and <= 1.", c);
                 break;
@@ -151,7 +152,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                 if (c >= '0' && c <= '9') {
                     tmp += c - diff - 1;
                     if (tmp < 0 || tmp > 11) {
-                        *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                        *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                             "Invalid month. Found %d, must be >= 1 and <= 12.",
                             tmp + 1);
                         break;
@@ -160,7 +161,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_SECOND_HYPHEN;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid second digit of month. "
                     "Found '%c', must be integer >= 0 and <= 9.", c);
                 break;
@@ -171,7 +172,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_FIRST_DAY;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid separator between month and day. "
                     "Found '%c', must be '-'.", c);
                 break;
@@ -182,7 +183,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_SECOND_DAY;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid first digit of day. "
                     "Found '%c', must be integer >= 0 and <= 3.", c);
                 break;
@@ -191,7 +192,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                 if (c >= '0' && c <= '9') {
                     tmp += c - diff;
                     if (tmp < 1 || tmp > 31) {
-                        *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                        *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                             "Invalid day. Found %d, must be >= 1 and <= 31.",
                             tmp);
                         break;
@@ -200,7 +201,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_SPACE;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid second digit of day. "
                     "Found '%c', must be integer >= 0 and <= 9.", c);
                 break;
@@ -211,7 +212,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_FIRST_HOUR;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid separator between date and time. "
                     "Found '%c', must be ' ' (empty space).", c);
                 break;
@@ -222,7 +223,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_SECOND_HOUR;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid first digit of hours. "
                     "Found '%c', must be integer >= 0 and <= 2.", c);
                 break;
@@ -231,7 +232,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                 if (c >= '0' && c <= '9') {
                     tmp += c - diff;
                     if (tmp < 0 || tmp > 23) {
-                        *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                        *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                             "Invalid hours. Found %d, must be >= 0 and <= 23.",
                             tmp);
                         break;
@@ -240,7 +241,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_FIRST_COLON;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid second digit of hours. "
                     "Found '%c', must be integer >= 0 and <= 9.", c);
                 break;
@@ -251,7 +252,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_FIRST_MINUTE;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid separator between hours and minutes. "
                     "Found '%c', must be ':'.", c);
                 break;
@@ -262,7 +263,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_SECOND_MINUTE;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid first digit of minutes. "
                     "Found '%c', must be integer >= 0 and <= 5.", c);
                 break;
@@ -274,7 +275,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                         // this won't happen because we are restricting the digits
                         // to 00-59 already, but lets keep the code here for
                         // reference.
-                        *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                        *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                             "Invalid minutes. Found %d, must be >= 0 and <= 59.",
                             tmp);
                         break;
@@ -283,7 +284,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_SECOND_COLON;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid second digit of minutes. "
                     "Found '%c', must be integer >= 0 and <= 9.", c);
                 break;
@@ -294,7 +295,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_FIRST_SECOND;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid separator between minutes and seconds. "
                     "Found '%c', must be ':'.", c);
                 break;
@@ -305,7 +306,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_SECOND_SECOND;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid first digit of seconds. "
                     "Found '%c', must be integer >= 0 and <= 6.", c);
                 break;
@@ -314,7 +315,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                 if (c >= '0' && c <= '9') {
                     tmp += c - diff;
                     if (tmp < 0 || tmp > 60) {
-                        *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                        *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                             "Invalid seconds. Found %d, must be >= 0 and <= 60.",
                             tmp);
                         break;
@@ -323,7 +324,7 @@ blogc_convert_datetime(const char *orig, const char *format,
                     state = DATETIME_DONE;
                     break;
                 }
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid second digit of seconds. "
                     "Found '%c', must be integer >= 0 and <= 9.", c);
                 break;
@@ -355,7 +356,7 @@ blogc_convert_datetime(const char *orig, const char *format,
             case DATETIME_SECOND_MINUTE:
             case DATETIME_FIRST_SECOND:
             case DATETIME_SECOND_SECOND:
-                *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+                *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
                     "Invalid datetime string. "
                     "Found '%s', formats allowed are: 'yyyy-mm-dd hh:mm:ss', "
                     "'yyyy-mm-dd hh:ss', 'yyyy-mm-dd hh' and 'yyyy-mm-dd'.",
@@ -374,7 +375,7 @@ blogc_convert_datetime(const char *orig, const char *format,
 
     char buf[1024];
     if (0 == strftime(buf, sizeof(buf), format, &t)) {
-        *err = blogc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
+        *err = bc_error_new_printf(BLOGC_WARNING_DATETIME_PARSER,
             "Failed to format DATE variable, FORMAT is too long: %s",
             format);
         return NULL;
diff --git a/src/blogc/datetime-parser.h b/src/blogc/datetime-parser.h
index a5087b3..08ad3c9 100644
--- a/src/blogc/datetime-parser.h
+++ b/src/blogc/datetime-parser.h
@@ -9,9 +9,10 @@
 #ifndef _DATETIME_H
 #define _DATETIME_H
 
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 
 char* blogc_convert_datetime(const char *orig, const char *format,
-    blogc_error_t **err);
+    bc_error_t **err);
 
 #endif /* _DATETIME_H */
diff --git a/src/blogc/error.h b/src/blogc/error.h
deleted file mode 100644
index 31fbaf2..0000000
--- a/src/blogc/error.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * blogc: A blog compiler.
- * Copyright (C) 2015-2016 Rafael G. Martins <rafael@rafaelmartins.eng.br>
- *
- * This program can be distributed under the terms of the BSD License.
- * See the file LICENSE.
- */
-
-#ifndef _ERROR_H
-#define _ERROR_H
-
-#include <stddef.h>
-
-typedef enum {
-    BLOGC_ERROR_SOURCE_PARSER = 1,
-    BLOGC_ERROR_TEMPLATE_PARSER,
-    BLOGC_ERROR_LOADER,
-    BLOGC_ERROR_FILE,
-    BLOGC_WARNING_DATETIME_PARSER,
-} blogc_error_type_t;
-
-typedef struct {
-    char *msg;
-    blogc_error_type_t type;
-} blogc_error_t;
-
-blogc_error_t* blogc_error_new(blogc_error_type_t type, const char *msg);
-blogc_error_t* blogc_error_new_printf(blogc_error_type_t type, const char *format, ...);
-blogc_error_t* blogc_error_parser(blogc_error_type_t type, const char *src,
-    size_t src_len, size_t current, const char *format, ...);
-void blogc_error_print(blogc_error_t *err);
-void blogc_error_free(blogc_error_t *err);
-
-#endif /* _ERROR_H */
diff --git a/src/blogc/errors.c b/src/blogc/errors.c
new file mode 100644
index 0000000..6447a4a
--- /dev/null
+++ b/src/blogc/errors.c
@@ -0,0 +1,40 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2015-2016 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "errors.h"
+#include "../common/error.h"
+
+
+void
+blogc_error_print(bc_error_t *err)
+{
+    if (err == NULL)
+        return;
+
+    switch((blogc_error_type_t) err->type) {
+        case BLOGC_ERROR_SOURCE_PARSER:
+            fprintf(stderr, "blogc: error: source: %s\n", err->msg);
+            break;
+        case BLOGC_ERROR_TEMPLATE_PARSER:
+            fprintf(stderr, "blogc: error: template: %s\n", err->msg);
+            break;
+        case BLOGC_ERROR_LOADER:
+            fprintf(stderr, "blogc: error: loader: %s\n", err->msg);
+            break;
+        case BLOGC_ERROR_FILE:
+            fprintf(stderr, "blogc: error: file: %s\n", err->msg);
+            break;
+        case BLOGC_WARNING_DATETIME_PARSER:
+            fprintf(stderr, "blogc: warning: datetime: %s\n", err->msg);
+            break;
+        default:
+            fprintf(stderr, "blogc: error: %s\n", err->msg);
+    }
+}
diff --git a/src/blogc/errors.h b/src/blogc/errors.h
new file mode 100644
index 0000000..427d9e7
--- /dev/null
+++ b/src/blogc/errors.h
@@ -0,0 +1,24 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2015-2016 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#ifndef _ERRORS_H
+#define _ERRORS_H
+
+#include "../common/error.h"
+
+typedef enum {
+    BLOGC_ERROR_SOURCE_PARSER = 1,
+    BLOGC_ERROR_TEMPLATE_PARSER,
+    BLOGC_ERROR_LOADER,
+    BLOGC_ERROR_FILE,
+    BLOGC_WARNING_DATETIME_PARSER,
+} blogc_error_type_t;
+
+void blogc_error_print(bc_error_t *err);
+
+#endif /* _ERRORS_H */
diff --git a/src/blogc/file.c b/src/blogc/file.c
index cdd6df4..94148fe 100644
--- a/src/blogc/file.c
+++ b/src/blogc/file.c
@@ -13,7 +13,8 @@
 #include <stdio.h>
 #include <string.h>
 #include "file.h"
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 #include "../common/utf8.h"
 #include "../common/utils.h"
 
@@ -22,7 +23,7 @@
 
 
 char*
-blogc_file_get_contents(const char *path, size_t *len, blogc_error_t **err)
+blogc_file_get_contents(const char *path, size_t *len, bc_error_t **err)
 {
     if (path == NULL || err == NULL || *err != NULL)
         return NULL;
@@ -32,7 +33,7 @@ blogc_file_get_contents(const char *path, size_t *len, blogc_error_t **err)
 
     if (fp == NULL) {
         int tmp_errno = errno;
-        *err = blogc_error_new_printf(BLOGC_ERROR_FILE,
+        *err = bc_error_new_printf(BLOGC_ERROR_FILE,
             "Failed to open file (%s): %s", path, strerror(tmp_errno));
         return NULL;
     }
@@ -60,7 +61,7 @@ blogc_file_get_contents(const char *path, size_t *len, blogc_error_t **err)
     fclose(fp);
 
     if (!blogc_utf8_validate_str(str)) {
-        *err = blogc_error_new_printf(BLOGC_ERROR_FILE,
+        *err = bc_error_new_printf(BLOGC_ERROR_FILE,
             "File content is not valid UTF-8: %s", path);
         bc_string_free(str, true);
         return NULL;
diff --git a/src/blogc/file.h b/src/blogc/file.h
index d2c4390..c509874 100644
--- a/src/blogc/file.h
+++ b/src/blogc/file.h
@@ -11,11 +11,12 @@
 
 #include <stddef.h>
 #include <stdio.h>
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 
 #define BLOGC_FILE_CHUNK_SIZE 1024
 
-char* blogc_file_get_contents(const char *path, size_t *len, blogc_error_t **err);
+char* blogc_file_get_contents(const char *path, size_t *len, bc_error_t **err);
 int blogc_fprintf(FILE *stream, const char *format, ...);
 
 #endif /* _FILE_H */
diff --git a/src/blogc/loader.c b/src/blogc/loader.c
index 914f07f..93d9eef 100644
--- a/src/blogc/loader.c
+++ b/src/blogc/loader.c
@@ -16,7 +16,8 @@
 #include "source-parser.h"
 #include "template-parser.h"
 #include "loader.h"
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 #include "../common/utils.h"
 
 
@@ -58,7 +59,7 @@ blogc_get_filename(const char *f)
 
 
 bc_slist_t*
-blogc_template_parse_from_file(const char *f, blogc_error_t **err)
+blogc_template_parse_from_file(const char *f, bc_error_t **err)
 {
     if (err == NULL || *err != NULL)
         return NULL;
@@ -73,7 +74,7 @@ blogc_template_parse_from_file(const char *f, blogc_error_t **err)
 
 
 bc_trie_t*
-blogc_source_parse_from_file(const char *f, blogc_error_t **err)
+blogc_source_parse_from_file(const char *f, bc_error_t **err)
 {
     if (err == NULL || *err != NULL)
         return NULL;
@@ -96,9 +97,9 @@ blogc_source_parse_from_file(const char *f, blogc_error_t **err)
 
 
 bc_slist_t*
-blogc_source_parse_from_files(bc_trie_t *conf, bc_slist_t *l, blogc_error_t **err)
+blogc_source_parse_from_files(bc_trie_t *conf, bc_slist_t *l, bc_error_t **err)
 {
-    blogc_error_t *tmp_err = NULL;
+    bc_error_t *tmp_err = NULL;
     bc_slist_t *rv = NULL;
     unsigned int with_date = 0;
 
@@ -123,10 +124,10 @@ blogc_source_parse_from_files(bc_trie_t *conf, bc_slist_t *l, blogc_error_t **er
         char *f = tmp->data;
         bc_trie_t *s = blogc_source_parse_from_file(f, &tmp_err);
         if (s == NULL) {
-            *err = blogc_error_new_printf(BLOGC_ERROR_LOADER,
+            *err = bc_error_new_printf(BLOGC_ERROR_LOADER,
                 "An error occurred while parsing source file: %s\n\n%s",
                 f, tmp_err->msg);
-            blogc_error_free(tmp_err);
+            bc_error_free(tmp_err);
             tmp_err = NULL;
             bc_slist_free_full(rv, (bc_free_func_t) bc_trie_free);
             rv = NULL;
diff --git a/src/blogc/loader.h b/src/blogc/loader.h
index 97286a0..c8a7230 100644
--- a/src/blogc/loader.h
+++ b/src/blogc/loader.h
@@ -9,13 +9,14 @@
 #ifndef _LOADER_H
 #define _LOADER_H
 
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 #include "../common/utils.h"
 
 char* blogc_get_filename(const char *f);
-bc_slist_t* blogc_template_parse_from_file(const char *f, blogc_error_t **err);
-bc_trie_t* blogc_source_parse_from_file(const char *f, blogc_error_t **err);
+bc_slist_t* blogc_template_parse_from_file(const char *f, bc_error_t **err);
+bc_trie_t* blogc_source_parse_from_file(const char *f, bc_error_t **err);
 bc_slist_t* blogc_source_parse_from_files(bc_trie_t *conf, bc_slist_t *l,
-    blogc_error_t **err);
+    bc_error_t **err);
 
 #endif /* _LOADER_H */
diff --git a/src/blogc/main.c b/src/blogc/main.c
index 0f174d4..8563c68 100644
--- a/src/blogc/main.c
+++ b/src/blogc/main.c
@@ -26,7 +26,8 @@
 #include "template-parser.h"
 #include "loader.h"
 #include "renderer.h"
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 #include "../common/utf8.h"
 #include "../common/utils.h"
 
@@ -219,7 +220,7 @@ main(int argc, char **argv)
         goto cleanup;
     }
 
-    blogc_error_t *err = NULL;
+    bc_error_t *err = NULL;
 
     bc_slist_t *s = blogc_source_parse_from_files(config, sources, &err);
     if (err != NULL) {
@@ -286,7 +287,7 @@ cleanup3:
     blogc_template_free_stmts(l);
 cleanup2:
     bc_slist_free_full(s, (bc_free_func_t) bc_trie_free);
-    blogc_error_free(err);
+    bc_error_free(err);
 cleanup:
     bc_trie_free(config);
     free(template);
diff --git a/src/blogc/renderer.c b/src/blogc/renderer.c
index 409c75e..7c29818 100644
--- a/src/blogc/renderer.c
+++ b/src/blogc/renderer.c
@@ -13,9 +13,10 @@
 #include <stdlib.h>
 #include <string.h>
 #include "datetime-parser.h"
-#include "error.h"
+#include "errors.h"
 #include "template-parser.h"
 #include "renderer.h"
+#include "../common/error.h"
 #include "../common/utils.h"
 
 
@@ -43,11 +44,11 @@ blogc_format_date(const char *date, bc_trie_t *global, bc_trie_t *local)
     if (date_format == NULL)
         return bc_strdup(date);
 
-    blogc_error_t *err = NULL;
+    bc_error_t *err = NULL;
     char *rv = blogc_convert_datetime(date, date_format, &err);
     if (err != NULL) {
         blogc_error_print(err);
-        blogc_error_free(err);
+        bc_error_free(err);
         return bc_strdup(date);
     }
     return rv;
diff --git a/src/blogc/source-parser.c b/src/blogc/source-parser.c
index dc39760..7cb929e 100644
--- a/src/blogc/source-parser.c
+++ b/src/blogc/source-parser.c
@@ -11,7 +11,8 @@
 
 #include "content-parser.h"
 #include "source-parser.h"
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 #include "../common/utils.h"
 
 
@@ -27,7 +28,7 @@ typedef enum {
 
 
 bc_trie_t*
-blogc_source_parse(const char *src, size_t src_len, blogc_error_t **err)
+blogc_source_parse(const char *src, size_t src_len, bc_error_t **err)
 {
     if (err == NULL || *err != NULL)
         return NULL;
@@ -60,7 +61,7 @@ blogc_source_parse(const char *src, size_t src_len, blogc_error_t **err)
                     state = SOURCE_SEPARATOR;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
+                *err = bc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
                     current,
                     "Can't find a configuration key or the content separator.");
                 break;
@@ -93,7 +94,7 @@ blogc_source_parse(const char *src, size_t src_len, blogc_error_t **err)
                         ((current - start == 13) &&
                          (0 == strncmp("BLOGC_VERSION", src + start, 13))))
                     {
-                        *err = blogc_error_new_printf(BLOGC_ERROR_SOURCE_PARSER,
+                        *err = bc_error_new_printf(BLOGC_ERROR_SOURCE_PARSER,
                             "'%s' variable is forbidden in source files. It will "
                             "be set for you by the compiler.", key);
                         break;
@@ -101,7 +102,7 @@ blogc_source_parse(const char *src, size_t src_len, blogc_error_t **err)
                     state = SOURCE_CONFIG_VALUE_START;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
+                *err = bc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
                     current, "Invalid configuration key.");
                 break;
 
@@ -111,7 +112,7 @@ blogc_source_parse(const char *src, size_t src_len, blogc_error_t **err)
                     start = current;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
+                *err = bc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
                     current, "Configuration value not provided for '%s'.",
                     key);
                 break;
@@ -134,7 +135,7 @@ blogc_source_parse(const char *src, size_t src_len, blogc_error_t **err)
                     state = SOURCE_CONTENT_START;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
+                *err = bc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
                     current,
                     "Invalid content separator. Must be more than one '-' characters.");
                 break;
@@ -183,21 +184,21 @@ blogc_source_parse(const char *src, size_t src_len, blogc_error_t **err)
         // output. :)
         switch (state) {
             case SOURCE_START:
-                *err = blogc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
+                *err = bc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
                     current, "Your source file is empty.");
                 break;
             case SOURCE_CONFIG_KEY:
-                *err = blogc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
+                *err = bc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
                     current, "Your last configuration key is missing ':' and "
                     "the value");
                 break;
             case SOURCE_CONFIG_VALUE_START:
-                *err = blogc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
+                *err = bc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
                     current, "Configuration value not provided for '%s'.",
                     key);
                 break;
             case SOURCE_CONFIG_VALUE:
-                *err = blogc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
+                *err = bc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
                     current, "No line ending after the configuration value for "
                     "'%s'.", key);
                 break;
diff --git a/src/blogc/source-parser.h b/src/blogc/source-parser.h
index d135f23..d920775 100644
--- a/src/blogc/source-parser.h
+++ b/src/blogc/source-parser.h
@@ -10,10 +10,11 @@
 #define _SOURCE_PARSER_H
 
 #include <stddef.h>
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 #include "../common/utils.h"
 
 bc_trie_t* blogc_source_parse(const char *src, size_t src_len,
-    blogc_error_t **err);
+    bc_error_t **err);
 
 #endif /* _SOURCE_PARSER_H */
diff --git a/src/blogc/template-parser.c b/src/blogc/template-parser.c
index 1cca885..acf8f7c 100644
--- a/src/blogc/template-parser.c
+++ b/src/blogc/template-parser.c
@@ -11,7 +11,8 @@
 #include <string.h>
 
 #include "template-parser.h"
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 #include "../common/utils.h"
 
 
@@ -42,7 +43,7 @@ typedef enum {
 
 
 bc_slist_t*
-blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
+blogc_template_parse(const char *src, size_t src_len, bc_error_t **err)
 {
     if (err == NULL || *err != NULL)
         return NULL;
@@ -169,13 +170,13 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     break;
                 }
                 if (c == '-') {
-                    *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                    *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                         src_len, current,
                         "Invalid statement syntax. Duplicated whitespace "
                         "cleaner before statement.");
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid statement syntax. Must begin with lowercase letter.");
                 break;
@@ -195,7 +196,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                             block_foreach_open = foreach_open;
                             break;
                         }
-                        *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
+                        *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
                             src, src_len, current, "Blocks can't be nested.");
                         break;
                     }
@@ -204,14 +205,14 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     {
                         if (block_open) {
                             if (if_count != block_if_count) {
-                                *err = blogc_error_new_printf(BLOGC_ERROR_TEMPLATE_PARSER,
+                                *err = bc_error_new_printf(BLOGC_ERROR_TEMPLATE_PARSER,
                                     "%d open 'if', 'ifdef' and/or 'ifndef' statements "
                                     "were not closed inside a '%s' block!",
                                     if_count - block_if_count, block_type);
                                 break;
                             }
                             if (!block_foreach_open && foreach_open) {
-                                *err = blogc_error_new_printf(BLOGC_ERROR_TEMPLATE_PARSER,
+                                *err = bc_error_new_printf(BLOGC_ERROR_TEMPLATE_PARSER,
                                     "An open 'foreach' statement was not closed "
                                     "inside a '%s' block!", block_type);
                                 break;
@@ -221,7 +222,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                             block_open = false;
                             break;
                         }
-                        *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
+                        *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
                             src, src_len, current,
                             "'endblock' statement without an open 'block' statement.");
                         break;
@@ -268,13 +269,13 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                                 else_open = true;
                                 break;
                             }
-                            *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
+                            *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
                                 src, src_len, current,
                                 "More than one 'else' statement for an open 'if', "
                                 "'ifdef' or 'ifndef' statement.");
                             break;
                         }
-                        *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
+                        *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
                             src, src_len, current,
                             "'else' statement without an open 'if', 'ifdef' or "
                             "'ifndef' statement.");
@@ -292,7 +293,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                             else_open = false;
                             break;
                         }
-                        *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
+                        *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
                             src, src_len, current,
                             "'endif' statement without an open 'if', 'ifdef' or "
                             "'ifndef' statement.");
@@ -308,7 +309,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                             foreach_open = true;
                             break;
                         }
-                        *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
+                        *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
                             src, src_len, current, "'foreach' statements can't "
                             "be nested.");
                         break;
@@ -324,14 +325,14 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                             foreach_open = false;
                             break;
                         }
-                        *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
+                        *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
                             src, src_len, current,
                             "'endforeach' statement without an open 'foreach' "
                             "statement.");
                         break;
                     }
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid statement type: Allowed types are: 'block', "
                     "'endblock', 'if', 'ifdef', 'ifndef', 'else', 'endif', "
@@ -346,7 +347,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     start = current;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid block syntax. Must begin with lowercase letter.");
                 break;
@@ -380,7 +381,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                         break;
                     }
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid block type. Allowed types are: 'entry', 'listing' "
                     "and 'listing_once'.");
@@ -394,7 +395,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     start = current;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid variable name. Must begin with uppercase letter.");
                 break;
@@ -410,7 +411,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                         state = TEMPLATE_BLOCK_END_WHITESPACE_CLEANER;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid variable name. Must be uppercase letter, number "
                     "or '_'.");
@@ -446,7 +447,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                 }
                 op_start = 0;
                 op_end = 0;
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid 'if' operand. Must be double-quoted static "
                     "string or variable.");
@@ -476,7 +477,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     start = current;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid foreach variable name. Must begin with uppercase "
                     "letter.");
@@ -490,7 +491,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     state = TEMPLATE_BLOCK_END_WHITESPACE_CLEANER;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid foreach variable name. Must be uppercase letter, "
                     "number or '_'.");
@@ -512,13 +513,13 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     break;
                 }
                 if (c == '-') {
-                    *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                    *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                         src_len, current,
                         "Invalid statement syntax. Duplicated whitespace "
                         "cleaner after statement.");
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid statement syntax. Must end with '%%}'.");
                 break;
@@ -532,7 +533,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     start = current;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid variable name. Must begin with uppercase letter.");
                 break;
@@ -550,7 +551,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     state = TEMPLATE_CLOSE_BRACKET;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid variable name. Must be uppercase letter, number "
                     "or '_'.");
@@ -563,7 +564,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     state = TEMPLATE_CLOSE_BRACKET;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid statement syntax. Must end with '}}'.");
                 break;
@@ -589,7 +590,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                                 tmp_op = BLOGC_TEMPLATE_OP_NEQ;
                         }
                         if (tmp_op == 0) {
-                            *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
+                            *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER,
                                 src, src_len, op_start,
                                 "Invalid 'if' operator. Must be '<', '>', "
                                 "'<=', '>=', '==' or '!='.");
@@ -622,7 +623,7 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
                     start = current + 1;
                     break;
                 }
-                *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
+                *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src,
                     src_len, current,
                     "Invalid statement syntax. Must end with '}'.");
                 break;
@@ -637,17 +638,17 @@ blogc_template_parse(const char *src, size_t src_len, blogc_error_t **err)
 
     if (*err == NULL) {
         if (state == TEMPLATE_BLOCK_IF_STRING_OPERAND)
-            *err = blogc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src, src_len,
+            *err = bc_error_parser(BLOGC_ERROR_TEMPLATE_PARSER, src, src_len,
                 start2, "Found an open double-quoted string.");
         else if (if_count != 0)
-            *err = blogc_error_new_printf(BLOGC_ERROR_TEMPLATE_PARSER,
+            *err = bc_error_new_printf(BLOGC_ERROR_TEMPLATE_PARSER,
                 "%d open 'if', 'ifdef' and/or 'ifndef' statements were not closed!",
                 if_count);
         else if (block_open)
-            *err = blogc_error_new(BLOGC_ERROR_TEMPLATE_PARSER,
+            *err = bc_error_new(BLOGC_ERROR_TEMPLATE_PARSER,
                 "An open block was not closed!");
         else if (foreach_open)
-            *err = blogc_error_new(BLOGC_ERROR_TEMPLATE_PARSER,
+            *err = bc_error_new(BLOGC_ERROR_TEMPLATE_PARSER,
                 "An open 'foreach' statement was not closed!");
     }
 
diff --git a/src/blogc/template-parser.h b/src/blogc/template-parser.h
index b22c2e7..3ed3b07 100644
--- a/src/blogc/template-parser.h
+++ b/src/blogc/template-parser.h
@@ -10,7 +10,8 @@
 #define _TEMPLATE_PARSER_H
 
 #include <stddef.h>
-#include "error.h"
+#include "errors.h"
+#include "../common/error.h"
 #include "../common/utils.h"
 
 /*
@@ -47,7 +48,7 @@ typedef struct {
 } blogc_template_stmt_t;
 
 bc_slist_t* blogc_template_parse(const char *src, size_t src_len,
-    blogc_error_t **err);
+    bc_error_t **err);
 void blogc_template_free_stmts(bc_slist_t *stmts);
 
 #endif /* _TEMPLATE_PARSER_H */
diff --git a/src/blogc/error.c b/src/common/error.c
index cca8c03..dbc1d81 100644
--- a/src/blogc/error.c
+++ b/src/common/error.c
@@ -10,34 +10,34 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include "error.h"
-#include "../common/utils.h"
+#include "utils.h"
 
 
-blogc_error_t*
-blogc_error_new(blogc_error_type_t type, const char *msg)
+bc_error_t*
+bc_error_new(int type, const char *msg)
 {
-    blogc_error_t *err = bc_malloc(sizeof(blogc_error_t));
+    bc_error_t *err = bc_malloc(sizeof(bc_error_t));
     err->type = type;
     err->msg = bc_strdup(msg);
     return err;
 }
 
 
-blogc_error_t*
-blogc_error_new_printf(blogc_error_type_t type, const char *format, ...)
+bc_error_t*
+bc_error_new_printf(int type, const char *format, ...)
 {
     va_list ap;
     va_start(ap, format);
     char *tmp = bc_strdup_vprintf(format, ap);
     va_end(ap);
-    blogc_error_t *rv = blogc_error_new(type, tmp);
+    bc_error_t *rv = bc_error_new(type, tmp);
     free(tmp);
     return rv;
 }
 
 
-blogc_error_t*
-blogc_error_parser(blogc_error_type_t type, const char *src, size_t src_len,
+bc_error_t*
+bc_error_parser(int type, const char *src, size_t src_len,
     size_t current, const char *format, ...)
 {
     va_list ap;
@@ -85,12 +85,12 @@ blogc_error_parser(blogc_error_type_t type, const char *src, size_t src_len,
 
     char *line = bc_strndup(src + linestart, lineend - linestart);
 
-    blogc_error_t *rv = NULL;
+    bc_error_t *rv = NULL;
 
     if (line[0] == '\0')  // "near" message isn't useful if line is empty
-        rv = blogc_error_new(type, msg);
+        rv = bc_error_new(type, msg);
     else
-        rv = blogc_error_new_printf(type,
+        rv = bc_error_new_printf(type,
             "%s\nError occurred near line %d, position %d: %s", msg, lineno,
             pos, line);
 
@@ -102,35 +102,7 @@ blogc_error_parser(blogc_error_type_t type, const char *src, size_t src_len,
 
 
 void
-blogc_error_print(blogc_error_t *err)
-{
-    if (err == NULL)
-        return;
-
-    switch(err->type) {
-        case BLOGC_ERROR_SOURCE_PARSER:
-            fprintf(stderr, "blogc: error: source: %s\n", err->msg);
-            break;
-        case BLOGC_ERROR_TEMPLATE_PARSER:
-            fprintf(stderr, "blogc: error: template: %s\n", err->msg);
-            break;
-        case BLOGC_ERROR_LOADER:
-            fprintf(stderr, "blogc: error: loader: %s\n", err->msg);
-            break;
-        case BLOGC_ERROR_FILE:
-            fprintf(stderr, "blogc: error: file: %s\n", err->msg);
-            break;
-        case BLOGC_WARNING_DATETIME_PARSER:
-            fprintf(stderr, "blogc: warning: datetime: %s\n", err->msg);
-            break;
-        default:
-            fprintf(stderr, "blogc: error: %s\n", err->msg);
-    }
-}
-
-
-void
-blogc_error_free(blogc_error_t *err)
+bc_error_free(bc_error_t *err)
 {
     if (err == NULL)
         return;
diff --git a/src/common/error.h b/src/common/error.h
new file mode 100644
index 0000000..17843ed
--- /dev/null
+++ b/src/common/error.h
@@ -0,0 +1,26 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2015-2016 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#ifndef _ERROR_H
+#define _ERROR_H
+
+#include <stddef.h>
+
+typedef struct {
+    char *msg;
+    int type;
+} bc_error_t;
+
+bc_error_t* bc_error_new(int type, const char *msg);
+bc_error_t* bc_error_new_printf(int type, const char *format, ...);
+bc_error_t* bc_error_parser(int type, const char *src, size_t src_len,
+    size_t current, const char *format, ...);
+void bc_error_print(bc_error_t *err);
+void bc_error_free(bc_error_t *err);
+
+#endif /* _ERROR_H */