add preceding zeros when decoding

diff --git a/.DS_Store b/.DS_Store
index 43b4569f8ffd05dee4f96d2d39bb7a4519236c3b..5ccc96b9cc995f73e9848183bd0c6899de971d68 100644 (file)
Binary files a/.DS_Store and b/.DS_Store differ

diff --git a/camera.cpp b/camera.cpp
index 62b6a01b90ba4c9aea22093cc7173d3df0cb5d7c..c595734bc203ed6d9151267ad83797b535fca601 100644 (file)
--- a/camera.cpp
+++ b/camera.cpp
@@ -9,6 +9,7 @@ void print_codewords(std::vector<bool> &vec);
 void vec_xor(std::vector<bool> &v1, const std::vector<bool> v2);
 unsigned int distance(std::vector<bool> &v1, const std::vector<bool> &v2);
 unsigned int convert_uint(std::vector<bool> &vec);
+std::string add_preceding_zeros(unsigned int n);
 void read_from_file(std::string filename, std::vector<std::vector<bool>> &symbol);
 void retrieve_codewords(std::vector<std::vector<bool>> &symbol, std::vector<bool> &codewords, bool is_upwards, std::size_t row, std::size_t col);
 void retrieve_special_codewords(std::vector<std::vector<bool>> &symbol, std::vector<bool> &codewords, bool is_upwards, int row, int col);
@@ -89,6 +90,18 @@ unsigned int convert_uint(std::vector<bool> &vec){
        return result;
 }
 
+std::string add_preceding_zeros(unsigned int n){
+       std::string result = std::to_string(n);
+       if (result.size() == 1){
+               result.insert(result.begin(), 0);
+               result.insert(result.begin(), 0);
+       }
+       else if (result.size() == 2){
+               result.insert(result.begin(), 0);
+       }
+       return result;
+}
+       
 
 std::vector<bool> get_format_info(std::vector<std::vector<bool>> &symbol){
        std::vector<bool> format_info(15,0);
@@ -308,7 +321,7 @@ std::string get_input_data(std::vector<bool> &input_data, unsigned int character
        unsigned int data_length = character_count_indicator / 3 * 10;
        for (std::size_t i{0}; i < data_length; i += 10){
                std::vector<bool> subvec(input_data.begin() + i, input_data.begin() + i + 10);
-               data += std::to_string(convert_uint(subvec));
+               data += add_preceding_zeros(convert_uint(subvec));
        }
        if (character_count_indicator % 3 == 1){
                std::vector<bool> subvec(input_data.begin() + data_length, input_data.begin() + data_length + 4);