return size of properties

include/blc_array.h

@@ -93,11 +93,11 @@ typedef struct blc_array
     /**Print the properties of the dims in a file or stderr by default (i.e. "3x800x600" )*/
     int fprint_dims(FILE *file=stderr) const;
     /**Print all the informations about the blc_array. Useful for debuging.*/
-    void fprint_debug(FILE *file=stderr) const;
+    int fprint_debug(FILE *file=stderr) const;
     /**Print all the properties of the array in a string (i.e. "UIN8 RGB3 3x800x600")*/
-    void sprint_properties(char *string, size_t max_string_size) const;
+    int sprint_properties(char *string, size_t max_string_size) const;
     /**Print all the properties of the array in a file or stderr by default. (i.e. "UIN8 RGB3 3x800x600")*/
-    void fprint_properties(FILE *file=stderr) const;
+    int fprint_properties(FILE *file=stderr) const;
     
 /* Modifying the properties of the array
 ======================================*/

src/blc_array.cpp

@@ -261,7 +261,7 @@ int blc_array::sscan_dims(char const *string){
 
 
 //Should use code in common with fprint_info
-void blc_array::sprint_properties(char *buffer, size_t buffer_size) const{
+int blc_array::sprint_properties(char *buffer, size_t buffer_size) const{
     int width;
     uint32_t str_type;
     uint32_t str_format;
@@ -270,10 +270,11 @@ void blc_array::sprint_properties(char *buffer, size_t buffer_size) const{
     if (format==0) EXIT_ON_ERROR("The format should not be NULL. Use 'NDEF' by default.");
     
     width=snprintf(buffer, buffer_size, "%.4s %.4s ", UINT32_TO_STRING(str_type, type),  UINT32_TO_STRING(str_format, format));
-    width+=sprint_dims(buffer+width,buffer_size-width);
+    width+=sprint_dims(buffer+width, buffer_size-width);
+    return width;
 }
 
-void blc_array::fprint_properties(FILE *file) const {
+int blc_array::fprint_properties(FILE *file) const {
     int width;
     uint32_t net_type = htonl(type);
     uint32_t net_format = htonl(format);
@@ -281,9 +282,10 @@ void blc_array::fprint_properties(FILE *file) const {
     if (type==0) EXIT_ON_ERROR("The type should not be NULL. Use 'NDEF' by default.");
     if (format==0) EXIT_ON_ERROR("The format should not be NULL. Use 'NDEF' by default.");
     
+    width=fprintf(file, "%.4s %.4s ", (char*)&net_type, (char*)&net_format);
+    width+=fprint_dims(file);
     
-    fprintf(file, "%.4s %.4s ", (char*)&net_type, (char*)&net_format);
-    width=fprint_dims(file);
+    return width;
 }
 
 //Should use code in common with fscan_info
@@ -335,13 +337,16 @@ void blc_array::fscan_properties(FILE *file){
  return size;
  }*/
 
-void blc_array::fprint_debug (FILE *file) const{
+int blc_array::fprint_debug (FILE *file) const{
+    int width;
     uint32_t type_str, format_str;
     
-    fprintf(file, "\nblc_array:\n type:%.4s, format:%.4s, dims_nb:%d, size:%ld \n", UINT32_TO_STRING(type_str, type), UINT32_TO_STRING(format_str, format),  dims_nb, size);
-    fprint_dims(file);
-    fprintf(file, "\n");
-    if (data==NULL) fprintf(file, "data is null\n");
+    width=fprintf(file, "\nblc_array:\n type:%.4s, format:%.4s, dims_nb:%d, size:%ld \n", UINT32_TO_STRING(type_str, type), UINT32_TO_STRING(format_str, format),  dims_nb, size);
+    width+=fprint_dims(file);
+    width+=fprintf(file, "\n");
+    if (data==NULL) width+=fprintf(file, "data is null\n");
+    
+    return width;
 }
 
 void blc_array::def_with_blc_file(char const *filename){