Implement CSV export function

Src/CSV_Utilities.cpp

@@ -11,6 +11,7 @@ CSV_Table::CSV_Table()
 {
     this->column_count = 0;
     this->mem_use = 0;
+    this->max_element_depth = 0;
     this->Column_List_End = this->Column_List_Head = nullptr;
 }
 
@@ -23,6 +24,7 @@ void CSV_Table::reset()
 {
     // 清理尾指针
     this->Column_List_End = nullptr;
+    this->max_element_depth = 0;
     this->column_count = 0;
     this->mem_use = 0;
 
@@ -304,6 +306,10 @@ CSV_Type::CSV_Err CSV_Table::append_cell(size_t target_column_position, const ch
     }
 
     p_target_column->element_count++;
+
+    if (p_target_column->element_count > this->max_element_depth)
+        this->max_element_depth = p_target_column->element_count;
+
     return CSV_Type::CSV_ERROR_NONE;
 }
 
@@ -372,5 +378,158 @@ CSV_Type::CSV_Err CSV_Table::insert_cell_after(size_t target_column_position, si
     }
 
     p_target_column->element_count++;
+
+    if (p_target_column->element_count > this->max_element_depth)
+        this->max_element_depth = p_target_column->element_count;
+
     return CSV_Type::CSV_ERROR_NONE;
 }
+
+CSV_Type::CSV_Err CSV_Table::insert_cell_before(const char *target_column_title_str, size_t target_cell_position, const char *cell_content_str)
+{
+    size_t count = 0;
+    decltype(this->Column_List_Head) p_target_column = this->Column_List_Head;
+    while (p_target_column != nullptr)
+    {
+        if (!strcmp(p_target_column->column_title_str, target_column_title_str))
+            return this->insert_cell_before(count, target_cell_position, cell_content_str);
+
+        p_target_column = p_target_column->p_next_column;
+        count++;
+    }
+    return CSV_Type::CSV_ERROR_COLUMN_NOT_FOUND;
+}
+
+CSV_Type::CSV_Err CSV_Table::insert_cell_before(size_t target_column_position, size_t target_cell_position, const char *cell_content_str)
+{
+    if ((target_column_position + 1) > this->column_count)
+        return CSV_Type::CSV_ERROR_ILLEGAL_COLUMN_POSITION;
+    decltype(this->Column_List_Head) p_target_column = this->Column_List_Head;
+    for (size_t count = 0; count < target_column_position; count++)
+        p_target_column = p_target_column->p_next_column;
+
+    if (!(((target_cell_position + 1) <= p_target_column->element_count) || ((target_cell_position == 0) && (p_target_column->element_count == 0))))
+        return CSV_Type::CSV_ERROR_ILLEGAL_CELL_POSITION;
+
+    decltype(p_target_column->Cell_List_Head) p_new_cell = (decltype(p_target_column->Cell_List_Head))malloc(sizeof(*(p_target_column->Cell_List_Head)));
+    if (p_new_cell == nullptr)
+        return CSV_Type::CSV_ERROR_MEM_ALLOCATE_FAILED;
+    this->mem_use += sizeof(*p_new_cell);
+
+    if (cell_content_str != nullptr)
+    {
+        char *p_content = (char *)malloc(strlen(cell_content_str) + 1); // +1 for '\0'
+        if (p_content == nullptr)
+        {
+            free(p_new_cell);
+            return CSV_Type::CSV_ERROR_MEM_ALLOCATE_FAILED;
+        }
+
+        this->mem_use += strlen(cell_content_str) + 1;
+        strcpy(p_content, cell_content_str);
+        p_new_cell->content_str = p_content;
+    }
+    else
+        p_new_cell->content_str = nullptr;
+
+    if (p_target_column->element_count == 0)
+    {
+        p_new_cell->p_next_cell = nullptr;
+        p_target_column->Cell_List_Head = p_target_column->Cell_List_End = p_new_cell;
+    }
+    else
+    {
+        if (target_cell_position == 0)
+        {
+            p_new_cell->p_next_cell = p_target_column->Cell_List_Head;
+            p_target_column->Cell_List_Head = p_new_cell;
+        }
+        else
+        {
+
+            decltype(p_new_cell) p_pre_target_cell = p_target_column->Cell_List_Head;
+            for (size_t count = 0; count < target_cell_position - 1; count++)
+                p_pre_target_cell = p_pre_target_cell->p_next_cell;
+
+            p_new_cell->p_next_cell = p_pre_target_cell->p_next_cell;
+            p_pre_target_cell->p_next_cell = p_new_cell;
+        }
+    }
+
+    p_target_column->element_count++;
+
+    if (p_target_column->element_count > this->max_element_depth)
+        this->max_element_depth = p_target_column->element_count;
+
+    return CSV_Type::CSV_ERROR_NONE;
+}
+
+CSV_Type::CSV_Err CSV_Table::export_to_file(const char *file_name_str)
+{
+    // 打开文件
+    FILE *p_file = fopen(file_name_str, "wb");
+    if (p_file == nullptr)
+        return CSV_Type::CSV_ERROR_FILE_CREATE_FAILED;
+
+    // 横向元素表
+    decltype(this->Column_List_Head->Cell_List_Head) *p_parallel_cell_list = nullptr;
+
+    // 输出内容
+    if (this->column_count != 0)
+    {
+        p_parallel_cell_list = (decltype(this->Column_List_Head->Cell_List_Head) *)malloc(sizeof(*this->Column_List_Head->Cell_List_Head) * this->column_count);
+        if (p_parallel_cell_list == nullptr)
+            return CSV_Type::CSV_ERROR_MEM_ALLOCATE_FAILED;
+
+        // 输出标题及填充横向列表
+        {
+            size_t count = 0;
+            for (decltype(this->Column_List_Head) p_target_column = this->Column_List_Head; p_target_column != nullptr; p_target_column = p_target_column->p_next_column)
+            {
+                if (fprintf(p_file, "%s,", p_target_column->column_title_str) < 0)
+                    goto file_write_error;
+                p_parallel_cell_list[count] = p_target_column->Cell_List_Head;
+                count++;
+            }
+            fseek(p_file, -1, SEEK_CUR);
+            if (fprintf(p_file, "\r\n") < 0)
+                goto file_write_error;
+        }
+
+        // 输出横向行内容
+        {
+            for (size_t row_count = 0; row_count < this->max_element_depth; row_count++)
+            {
+                for (size_t column_count = 0; column_count < this->column_count; column_count++)
+                {
+                    if (p_parallel_cell_list[column_count] != nullptr)
+                    {
+                        if (fprintf(p_file, strstr(p_parallel_cell_list[column_count]->content_str, ",") ? "\"%s\"," : "%s,", p_parallel_cell_list[column_count]->content_str) < 0)
+                            goto file_write_error;
+                        p_parallel_cell_list[column_count] = p_parallel_cell_list[column_count]->p_next_cell;
+                    }
+                    else
+                    {
+                        if (fprintf(p_file, ",") < 0)
+                            goto file_write_error;
+                    }
+                }
+                fseek(p_file, -1, SEEK_CUR);
+                if (fprintf(p_file, "\r\n") < 0)
+                    goto file_write_error;
+            }
+        }
+
+        free(p_parallel_cell_list);
+    }
+
+    fclose(p_file);
+    return CSV_Type::CSV_ERROR_NONE;
+
+// 写入错误处理
+file_write_error:
+    if (p_parallel_cell_list != nullptr)
+        free(p_parallel_cell_list);
+    fclose(p_file);
+    return CSV_Type::CSV_ERROR_FILE_WRITE_FAILED;
+}

Src/Command_Solve.cpp

@@ -23,12 +23,16 @@ void Pre_Command_Solve(void)
     CSV.insert_column_before("Test column", "Test insert column before Head");
     CSV.insert_column_before("Test column", "Test insert column before Origin");
 
+    CSV.insert_cell_before("Test column 2", 0, "0");
     CSV.append_cell("Test column 2", "1");
+    CSV.insert_cell_before("Test column 2", 0, "Insert");
     CSV.insert_cell_after("Test column 3", (unsigned)0, "Insert Cell");
     CSV.append_cell("Test column 3", "1");
-    CSV.append_cell("Test column 3", "2");
+    CSV.append_cell("Test column 3", "MyWawwww,dwadawdawd");
     CSV.append_cell("Test column 3", "3");
 
+    CSV.export_to_file("new.csv");
+
     // 获取命令行
     int argc;
     LPWSTR *argv;