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March 8, 2021 00:26
Example of converting ustring encoding issue
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/* Example of encoding problem with ustrings. | |
* | |
* Compile using: | |
* g++ -std=c++11 test.cpp $(pkg-config --cflags --libs poppler-cpp) | |
* | |
*/ | |
#include <poppler-document.h> | |
#include <poppler-page.h> | |
#include <poppler-toc.h> | |
#include <iostream> | |
using namespace poppler; | |
void print_ustring(ustring x){ | |
if(x.length()){ | |
byte_array buf = x.to_utf8(); | |
std::string out(buf.data(), buf.size()); | |
std::cout << out.c_str() << std::endl; | |
} | |
} | |
int main(int argc, char* argv[]){ | |
if (argc < 2) | |
throw std::runtime_error("Use pdf filename as parameter"); | |
document * doc = document::load_from_file(argv[1], "", ""); | |
if(!doc) | |
throw std::runtime_error("Failed to read pdf file"); | |
page *p(doc->create_page(0)); | |
if(!p) | |
throw std::runtime_error("Failed to create pagee"); | |
//Properly gets converted to UTF8: | |
std::cout << "Actual text:\n" << std::endl; | |
print_ustring(p->text()); | |
std::cout << "\n--------\n Some ustring fields:\n" << std::endl; | |
//Incorrect conversion to UTF8: | |
print_ustring(doc->get_creator()); | |
print_ustring(doc->get_author()); | |
print_ustring(doc->create_toc()->root()->title()); | |
std::cout << "\n--------\n Individual textboxes:\n" << std::endl; | |
//Also incorrect conversion to UTF8: | |
std::vector<text_box> words = p->text_list(); | |
for(int i = 0; i < words.size(); i++) | |
print_ustring(words.at(i).text()); | |
return 0; | |
} |
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