diff options
Diffstat (limited to 'docs/samples/load_stream.cpp')
-rw-r--r-- | docs/samples/load_stream.cpp | 194 |
1 files changed, 97 insertions, 97 deletions
diff --git a/docs/samples/load_stream.cpp b/docs/samples/load_stream.cpp index c717eeb..05cfb7f 100644 --- a/docs/samples/load_stream.cpp +++ b/docs/samples/load_stream.cpp @@ -1,97 +1,97 @@ -#include "pugixml.hpp"
-
-#include <fstream>
-#include <iomanip>
-#include <iostream>
-
-void print_doc(const char* message, const pugi::xml_document& doc, const pugi::xml_parse_result& result)
-{
- std::cout
- << message
- << "\t: load result '" << result.description() << "'"
- << ", first character of root name: U+" << std::hex << std::uppercase << std::setw(4) << std::setfill('0') << pugi::as_wide(doc.first_child().name())[0]
- << ", year: " << doc.first_child().first_child().first_child().child_value()
- << std::endl;
-}
-
-bool try_imbue(std::wistream& stream, const char* name)
-{
- try
- {
- stream.imbue(std::locale(name));
-
- return true;
- }
- catch (const std::exception&)
- {
- return false;
- }
-}
-
-int main()
-{
- pugi::xml_document doc;
-
- {
- //[code_load_stream
- std::ifstream stream("weekly-utf-8.xml");
- pugi::xml_parse_result result = doc.load(stream);
- //]
-
- // first character of root name: U+9031, year: 1997
- print_doc("UTF8 file from narrow stream", doc, result);
- }
-
- {
- std::ifstream stream("weekly-utf-16.xml");
- pugi::xml_parse_result result = doc.load(stream);
-
- // first character of root name: U+9031, year: 1997
- print_doc("UTF16 file from narrow stream", doc, result);
- }
-
- {
- // Since wide streams are treated as UTF-16/32 ones, you can't load the UTF-8 file from a wide stream
- // directly if you have localized characters; you'll have to provide a UTF8 locale (there is no
- // standard one; you can use utf8_codecvt_facet from Boost or codecvt_utf8 from C++0x)
- std::wifstream stream("weekly-utf-8.xml");
-
- if (try_imbue(stream, "en_US.UTF-8")) // try Linux encoding
- {
- pugi::xml_parse_result result = doc.load(stream);
-
- // first character of root name: U+00E9, year: 1997
- print_doc("UTF8 file from wide stream", doc, result);
- }
- else
- {
- std::cout << "UTF-8 locale is not available\n";
- }
- }
-
- {
- // Since wide streams are treated as UTF-16/32 ones, you can't load the UTF-16 file from a wide stream without
- // using custom codecvt; you can use codecvt_utf16 from C++0x
- }
-
- {
- // Since encoding names are non-standard, you can't load the Shift-JIS (or any other non-ASCII) file
- // from a wide stream portably
- std::wifstream stream("weekly-shift_jis.xml");
-
- if (try_imbue(stream, ".932") || // try Microsoft encoding
- try_imbue(stream, "ja_JP.SJIS")) // try Linux encoding; run "localedef -i ja_JP -c -f SHIFT_JIS /usr/lib/locale/ja_JP.SJIS" to get it
- {
- pugi::xml_parse_result result = doc.load(stream);
-
- // first character of root name: U+9031, year: 1997
- print_doc("Shift-JIS file from wide stream", doc, result);
- }
- else
- {
- std::cout << "Shift-JIS locale is not available\n";
- }
- }
-}
-
-// vim:et
+#include "pugixml.hpp" + +#include <fstream> +#include <iomanip> +#include <iostream> + +void print_doc(const char* message, const pugi::xml_document& doc, const pugi::xml_parse_result& result) +{ + std::cout + << message + << "\t: load result '" << result.description() << "'" + << ", first character of root name: U+" << std::hex << std::uppercase << std::setw(4) << std::setfill('0') << pugi::as_wide(doc.first_child().name())[0] + << ", year: " << doc.first_child().first_child().first_child().child_value() + << std::endl; +} + +bool try_imbue(std::wistream& stream, const char* name) +{ + try + { + stream.imbue(std::locale(name)); + + return true; + } + catch (const std::exception&) + { + return false; + } +} + +int main() +{ + pugi::xml_document doc; + + { + //[code_load_stream + std::ifstream stream("weekly-utf-8.xml"); + pugi::xml_parse_result result = doc.load(stream); + //] + + // first character of root name: U+9031, year: 1997 + print_doc("UTF8 file from narrow stream", doc, result); + } + + { + std::ifstream stream("weekly-utf-16.xml"); + pugi::xml_parse_result result = doc.load(stream); + + // first character of root name: U+9031, year: 1997 + print_doc("UTF16 file from narrow stream", doc, result); + } + + { + // Since wide streams are treated as UTF-16/32 ones, you can't load the UTF-8 file from a wide stream + // directly if you have localized characters; you'll have to provide a UTF8 locale (there is no + // standard one; you can use utf8_codecvt_facet from Boost or codecvt_utf8 from C++0x) + std::wifstream stream("weekly-utf-8.xml"); + + if (try_imbue(stream, "en_US.UTF-8")) // try Linux encoding + { + pugi::xml_parse_result result = doc.load(stream); + + // first character of root name: U+00E9, year: 1997 + print_doc("UTF8 file from wide stream", doc, result); + } + else + { + std::cout << "UTF-8 locale is not available\n"; + } + } + + { + // Since wide streams are treated as UTF-16/32 ones, you can't load the UTF-16 file from a wide stream without + // using custom codecvt; you can use codecvt_utf16 from C++0x + } + + { + // Since encoding names are non-standard, you can't load the Shift-JIS (or any other non-ASCII) file + // from a wide stream portably + std::wifstream stream("weekly-shift_jis.xml"); + + if (try_imbue(stream, ".932") || // try Microsoft encoding + try_imbue(stream, "ja_JP.SJIS")) // try Linux encoding; run "localedef -i ja_JP -c -f SHIFT_JIS /usr/lib/locale/ja_JP.SJIS" to get it + { + pugi::xml_parse_result result = doc.load(stream); + + // first character of root name: U+9031, year: 1997 + print_doc("Shift-JIS file from wide stream", doc, result); + } + else + { + std::cout << "Shift-JIS locale is not available\n"; + } + } +} + +// vim:et |