87 lines
1.9 KiB
C++
87 lines
1.9 KiB
C++
#include "xml_utils.h"
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#include "persistent-data/file_utils.h"
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#include <fstream>
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#include <iostream>
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using namespace xml_utils;
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//----------------------------------------------------------------
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void
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xml_parser::parse(std::string const &backup_file, bool quiet)
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{
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persistent_data::check_file_exists(backup_file);
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ifstream in(backup_file.c_str(), ifstream::in);
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std::auto_ptr<base::progress_monitor> monitor = create_monitor(quiet);
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size_t total = 0;
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size_t input_length = get_file_length(backup_file);
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while (!in.eof()) {
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char buffer[4096];
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in.read(buffer, sizeof(buffer));
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size_t len = in.gcount();
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int done = in.eof();
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if (!XML_Parse(parser_, buffer, len, done)) {
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ostringstream out;
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out << "Parse error at line "
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<< XML_GetCurrentLineNumber(parser_)
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<< ":\n"
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<< XML_ErrorString(XML_GetErrorCode(parser_))
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<< endl;
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throw runtime_error(out.str());
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}
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total += len;
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monitor->update_percent(total * 100 / input_length);
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}
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}
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size_t
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xml_parser::get_file_length(string const &file) const
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{
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struct stat info;
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int r;
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r = ::stat(file.c_str(), &info);
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if (r)
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throw runtime_error("Couldn't stat backup path");
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return info.st_size;
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}
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auto_ptr<base::progress_monitor>
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xml_parser::create_monitor(bool quiet)
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{
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if (!quiet && isatty(fileno(stdout)))
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return base::create_progress_bar("Restoring");
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else
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return base::create_quiet_progress_monitor();
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}
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//----------------------------------------------------------------
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void
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xml_utils::build_attributes(attributes &a, char const **attr)
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{
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while (*attr) {
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char const *key = *attr;
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attr++;
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if (!*attr) {
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ostringstream out;
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out << "No value given for xml attribute: " << key;
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throw runtime_error(out.str());
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}
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char const *value = *attr;
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a.insert(make_pair(string(key), string(value)));
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attr++;
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}
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}
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//----------------------------------------------------------------
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