diff --git a/src/gmio_core/internal/string.h b/src/gmio_core/internal/string.h
new file mode 100644
index 0000000..311afa5
--- /dev/null
+++ b/src/gmio_core/internal/string.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+** gmio
+** Copyright Fougue (2 Mar. 2015)
+** contact@fougue.pro
+**
+** This software is a reusable library whose purpose is to provide complete
+** I/O support for various CAD file formats (eg. STL)
+**
+** This software is governed by the CeCILL-B license under French law and
+** abiding by the rules of distribution of free software.  You can  use,
+** modify and/ or redistribute the software under the terms of the CeCILL-B
+** license as circulated by CEA, CNRS and INRIA at the following URL
+** "http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html".
+****************************************************************************/
+
+#ifndef GMIO_INTERNAL_STRING_H
+#define GMIO_INTERNAL_STRING_H
+
+#include "../global.h"
+
+#include <stddef.h>
+
+/*! Stores traditional 8-bit read-only strings
+ *
+ *  For faster lookups, it knowns the length of its contents.
+ */
+struct gmio_const_string
+{
+    const char* ptr;
+    size_t len;
+};
+typedef struct gmio_const_string gmio_const_string_t;
+
+/*! Expands to bracket initialization of a gmio_const_string from const char[]
+ *
+ *  Example:
+ *  \code
+ *      const char token[] = "woops";
+ *      const gmio_const_string_t token_s = GMIO_CONST_STRING_FROM_ARRAY(token);
+ *  \endcode
+ */
+#define GMIO_CONST_STRING_FROM_ARRAY(array) { &(array)[0], sizeof(array) }
+
+/*! Stores traditional 8-bit mutable strings
+ *
+ *  For faster lookups, it knowns the length of its contents. Length must not
+ *  exceeds the maximum size(capacity).
+ */
+struct gmio_string
+{
+    char*  ptr; /*!< Buffer contents */
+    size_t len; /*!< Size(length) of current contents */
+    size_t max_len; /*!< Maximum contents size(capacity) */
+};
+
+typedef struct gmio_string gmio_string_t;
+
+GMIO_INLINE void gmio_string_clear(gmio_string_t* str);
+
+
+
+/*
+ * -- Implementation
+ */
+
+void gmio_string_clear(gmio_string_t* str)
+{
+    str->ptr[0] = 0;
+    str->len = 0;
+}
+
+#endif /* GMIO_INTERNAL_STRING_H */
diff --git a/src/gmio_core/internal/string_parse.c b/src/gmio_core/internal/string_parse.c
index f757f91..b2295a6 100644
--- a/src/gmio_core/internal/string_parse.c
+++ b/src/gmio_core/internal/string_parse.c
@@ -28,7 +28,7 @@ void gmio_string_stream_fwd_iterator_init(gmio_string_stream_fwd_iterator_t *it)
 }
 
 gmio_eat_word_error_t gmio_eat_word(
-        gmio_string_stream_fwd_iterator_t *it, gmio_string_buffer_t *buffer)
+        gmio_string_stream_fwd_iterator_t *it, gmio_string_t *buffer)
 {
     char* buffer_ptr = buffer->ptr;
     const size_t buffer_capacity = buffer->max_len;
diff --git a/src/gmio_core/internal/string_parse.h b/src/gmio_core/internal/string_parse.h
index eebe41c..f8c02db 100644
--- a/src/gmio_core/internal/string_parse.h
+++ b/src/gmio_core/internal/string_parse.h
@@ -21,6 +21,7 @@
 
 /* For implementation section */
 #include "helper_stream.h"
+#include "string.h"
 #include "string_utils.h"
 #ifdef GMIO_STRINGPARSE_USE_FAST_ATOF
 #  include "fast_atof.h"
@@ -30,22 +31,6 @@
 #include <stdlib.h>
 /* End for implementation section */
 
-/*! Stores traditional 8-bit strings
- *
- *  For faster length lookups, it knowns the length of its contents. It must
- *  never exceeds the maximum length of the buffer.
- */
-struct gmio_string_buffer
-{
-    char*  ptr; /*!< Buffer contents */
-    size_t len; /*!< Size(length) of current contents */
-    size_t max_len; /*!< Maximum contents size(capacity) */
-};
-
-typedef struct gmio_string_buffer  gmio_string_buffer_t;
-
-GMIO_INLINE void gmio_string_buffer_clear(gmio_string_buffer_t* buffer);
-
 /*! Forward iterator over a stream
  *
  *  To be used with API below.
@@ -55,12 +40,12 @@ GMIO_INLINE void gmio_string_buffer_clear(gmio_string_buffer_t* buffer);
 struct gmio_string_stream_fwd_iterator
 {
     gmio_stream_t* stream;
-    gmio_string_buffer_t buffer;
+    gmio_string_t buffer;
     size_t buffer_pos; /*!< Position indicator in buffer */
 
     void* cookie;
     void (*stream_read_hook)(
-            void* cookie, const gmio_string_buffer_t* str_buffer);
+            void* cookie, const gmio_string_t* str_buffer);
 };
 
 typedef struct gmio_string_stream_fwd_iterator
@@ -86,7 +71,7 @@ GMIO_INLINE const char* gmio_skip_spaces(
  *  in \p buffer */
 GMIO_INLINE void gmio_copy_spaces(
         gmio_string_stream_fwd_iterator_t* it,
-        gmio_string_buffer_t* buffer);
+        gmio_string_t* buffer);
 
 enum gmio_eat_word_error
 {
@@ -102,7 +87,7 @@ typedef enum gmio_eat_word_error gmio_eat_word_error_t;
  *  \retval <=-1 On error
  */
 gmio_eat_word_error_t gmio_eat_word(
-        gmio_string_stream_fwd_iterator_t* it, gmio_string_buffer_t* buffer);
+        gmio_string_stream_fwd_iterator_t* it, gmio_string_t* buffer);
 
 #if 0
 /*! Iterate over stream while it matches input string \p str
@@ -126,12 +111,6 @@ GMIO_INLINE int gmio_get_float32(const char* str, gmio_float32_t* value_ptr);
  * -- Implementation
  */
 
-void gmio_string_buffer_clear(gmio_string_buffer_t* buffer)
-{
-    buffer->ptr[0] = 0;
-    buffer->len = 0;
-}
-
 const char* gmio_current_char(
         const gmio_string_stream_fwd_iterator_t* it)
 {
@@ -169,7 +148,7 @@ const char* gmio_skip_spaces(
 
 void gmio_copy_spaces(
         gmio_string_stream_fwd_iterator_t* it,
-        gmio_string_buffer_t* buffer)
+        gmio_string_t* buffer)
 {
     const char* curr_char = gmio_current_char(it);
     while (curr_char != NULL
diff --git a/src/gmio_stl/stla_read.c b/src/gmio_stl/stla_read.c
index 76b4d1d..3bab5d6 100644
--- a/src/gmio_stl/stla_read.c
+++ b/src/gmio_stl/stla_read.c
@@ -79,8 +79,8 @@
  *
  */
 
-/* Fixed maximum length of any string_buffer user in this source file */
-enum { GMIO_STLA_READ_STRING_BUFFER_LEN = 1024 };
+/* Fixed maximum length of any string user in this source file */
+enum { GMIO_STLA_READ_STRING_MAX_LEN = 1024 };
 
 /* gmio_stream_fwd_iterator_stla_cookie */
 typedef struct
@@ -114,13 +114,6 @@ typedef enum
     unknown_token
 } gmio_stla_token_t;
 
-struct gmio_const_string
-{
-    const char* ptr;
-    size_t len;
-};
-typedef struct gmio_const_string gmio_const_string_t;
-
 static const char gmio_stla_tokstr_ENDFACET[] = "endfacet";
 static const char gmio_stla_tokstr_ENDLOOP[] = "endloop";
 static const char gmio_stla_tokstr_ENDSOLID[] = "endsolid";
@@ -130,7 +123,6 @@ static const char gmio_stla_tokstr_NORMAL[] = "normal";
 static const char gmio_stla_tokstr_OUTER[] = "outer";
 static const char gmio_stla_tokstr_SOLID[] = "solid";
 static const char gmio_stla_tokstr_VERTEX[] = "vertex";
-#define GMIO_CONST_STRING_FROM_ARRAY(array) { &(array)[0], sizeof(array) }
 
 static const gmio_const_string_t gmio_stla_tokstr[] = {
     {0},
@@ -155,12 +147,12 @@ typedef struct
     gmio_bool_t error;
     gmio_string_stream_fwd_iterator_t stream_iterator;
     gmio_string_stream_fwd_iterator_cookie_t stream_iterator_cookie;
-    gmio_string_buffer_t string_buffer;
+    gmio_string_t string_buffer;
     gmio_stl_mesh_creator_t* creator;
 } gmio_stla_parse_data_t;
 
 static void gmio_stream_fwd_iterator_stla_read_hook(
-        void* cookie, const gmio_string_buffer_t* buffer)
+        void* cookie, const gmio_string_t* buffer)
 {
     gmio_string_stream_fwd_iterator_cookie_t* tcookie =
             (gmio_string_stream_fwd_iterator_cookie_t*)(cookie);
@@ -286,7 +278,7 @@ static gmio_stla_token_t parsing_find_token(const char* word, size_t word_len)
 }
 
 GMIO_INLINE gmio_stla_token_t parsing_find_token_from_buff(
-        const gmio_string_buffer_t* str_buffer)
+        const gmio_string_t* str_buffer)
 {
     return parsing_find_token(str_buffer->ptr, str_buffer->len);
 }
@@ -295,7 +287,7 @@ static gmio_bool_t parsing_eat_next_token(
         gmio_stla_token_t next_token, gmio_stla_parse_data_t* data)
 {
     const char* next_token_str = token_to_string(next_token);
-    gmio_string_buffer_t* data_strbuff = &data->string_buffer;
+    gmio_string_t* data_strbuff = &data->string_buffer;
     gmio_eat_word_error_t eat_error;
 
     data_strbuff->len = 0;
@@ -334,7 +326,7 @@ static gmio_bool_t parse_eat_until_token(
 {
     if (!token_match_candidate(data->token, end_tokens)) {
         gmio_string_stream_fwd_iterator_t* stream_it = &data->stream_iterator;
-        gmio_string_buffer_t* string_buf = &data->string_buffer;
+        gmio_string_t* string_buf = &data->string_buffer;
         gmio_bool_t end_token_found = GMIO_FALSE;
 
         do {
@@ -378,7 +370,7 @@ static gmio_bool_t parse_solidname_beg(gmio_stla_parse_data_t* data)
     if (parsing_eat_next_token(unknown_token, data)) {
         data->token = parsing_find_token_from_buff(&data->string_buffer);
         if (data->token == FACET_token || data->token == ENDSOLID_token) {
-            gmio_string_buffer_clear(&data->string_buffer);
+            gmio_string_clear(&data->string_buffer);
             return GMIO_TRUE;
         }
         else {
@@ -486,7 +478,7 @@ static void parse_solid(gmio_stla_parse_data_t* data)
 
 int gmio_stla_read(gmio_transfer_t* trsf, gmio_stl_mesh_creator_t* creator)
 {
-    char fixed_buffer[GMIO_STLA_READ_STRING_BUFFER_LEN];
+    char fixed_buffer[GMIO_STLA_READ_STRING_MAX_LEN];
     gmio_stla_parse_data_t parse_data;
 
     { /* Check validity of input parameters */
@@ -514,7 +506,7 @@ int gmio_stla_read(gmio_transfer_t* trsf, gmio_stl_mesh_creator_t* creator)
 
     parse_data.string_buffer.ptr = &fixed_buffer[0];
     parse_data.string_buffer.len = 0;
-    parse_data.string_buffer.max_len = GMIO_STLA_READ_STRING_BUFFER_LEN;
+    parse_data.string_buffer.max_len = GMIO_STLA_READ_STRING_MAX_LEN;
 
     parse_data.creator = creator;
 
diff --git a/tests/test_core_internal.c b/tests/test_core_internal.c
index bdcc7c1..d2023c9 100644
--- a/tests/test_core_internal.c
+++ b/tests/test_core_internal.c
@@ -151,7 +151,7 @@ const char* test_internal__string_parse()
         gmio_string_stream_fwd_iterator_t fwd_it = {0};
 
         char copy_str[128];
-        gmio_string_buffer_t copy_strbuff;
+        gmio_string_t copy_strbuff;
 
         buff.readonly_ptr = text;
         buff.len = strlen(text);
@@ -212,7 +212,7 @@ const char* test_internal__string_parse()
         gmio_string_stream_fwd_iterator_t fwd_it = {0};
 
         char copy_str[128];
-        gmio_string_buffer_t copy_strbuff;
+        gmio_string_t copy_strbuff;
 
         buff.readonly_ptr = text;
         buff.len = strlen(text);