b7d418131d
* [file_utils] spin-off syscall-related file operations 1. Eliminate the potential circular dependency between persistent-data/block.h and persistent-data/file_utils.h, if the former one wants to include the latter. 2. Avoid namespace pollution by removing the "using namespace std" declaration in block.tcc. 3. Correct the header hierarchy: base/xml_utils.h now no longer depends on the higher-level persistent-data/file_utils.h * [file_utils] support block files in get_file_length()
78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
#include "xml_utils.h"
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#include "base/file_utils.h"
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#include <fstream>
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#include <iostream>
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#include <sys/stat.h>
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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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file_utils::check_file_exists(backup_file);
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ifstream in(backup_file.c_str(), ifstream::in);
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std::unique_ptr<base::progress_monitor> monitor = create_monitor(quiet);
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size_t total = 0;
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size_t input_length = file_utils::get_file_length(backup_file);
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XML_Error error_code = XML_ERROR_NONE;
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while (!in.eof() && error_code == XML_ERROR_NONE) {
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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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// Do not throw while normally aborted by element handlers
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if (!XML_Parse(parser_, buffer, len, done) &&
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(error_code = XML_GetErrorCode(parser_)) != XML_ERROR_ABORTED) {
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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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unique_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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