mirror of
https://github.com/qpdf/qpdf.git
synced 2024-11-14 00:34:03 +00:00
bcea54fcaa
Turns out unreadCh is much more efficient than seek(-1, SEEK_CUR). Update comments and code to reflect this.
80 lines
2.7 KiB
C++
80 lines
2.7 KiB
C++
#include <qpdf/ClosedFileInputSource.hh>
|
|
#include <qpdf/FileInputSource.hh>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <iostream>
|
|
#include <stdlib.h>
|
|
|
|
void check(std::string const& what, bool result)
|
|
{
|
|
if (! result)
|
|
{
|
|
std::cout << "FAIL: " << what << std::endl;
|
|
}
|
|
}
|
|
|
|
void do_tests(InputSource* is)
|
|
{
|
|
check("get name", "input" == is->getName());
|
|
check("initial tell", 0 == is->tell());
|
|
is->seek(11, SEEK_SET);
|
|
check("tell after SEEK_SET", 11 == is->tell());
|
|
check("read offset 11", "Offset 11" == is->readLine(100));
|
|
check("last offset after read 11", 11 == is->getLastOffset());
|
|
check("tell after read", 21 == is->tell());
|
|
is->findAndSkipNextEOL();
|
|
check("tell after findAndSkipNextEOL", 522 == is->tell());
|
|
char b[1];
|
|
b[0] = '\0';
|
|
#ifdef _WIN32
|
|
// Empirical evidence, and the passage of the rest of the qpdf
|
|
// test suite, suggest that this is working on Windows in the way
|
|
// that it needs to work. If this ifdef is made to be true on
|
|
// Windows, it passes with ClosedFileInputSource but not with
|
|
// FileInputSource, which doesn't make any sense since
|
|
// ClosedFileInputSource is calling FileInputSource to do its
|
|
// work.
|
|
is->seek(521, SEEK_SET);
|
|
is->read(b, 1);
|
|
#else
|
|
is->unreadCh('\n');
|
|
check("read unread character", 1 == is->read(b, 1));
|
|
check("got character", '\n' == b[0]);
|
|
#endif
|
|
check("last offset after read unread", 521 == is->getLastOffset());
|
|
is->seek(0, SEEK_END);
|
|
check("tell at end", 556 == is->tell());
|
|
is->seek(-25, SEEK_END);
|
|
check("tell before end", 531 == is->tell());
|
|
check("last offset unchanged after seek", 521 == is->getLastOffset());
|
|
is->seek(-9, SEEK_CUR);
|
|
check("tell after SEEK_CUR", 522 == is->tell());
|
|
check("read offset 522", "9 before" == is->readLine(100));
|
|
check("last offset after read", 522 == is->getLastOffset());
|
|
is->rewind();
|
|
check("last offset unchanged after rewind", 522 == is->getLastOffset());
|
|
check("tell after rewind", 0 == is->tell());
|
|
check("read offset at beginning", "!00000000?" == is->readLine(100));
|
|
check("last offset after read 0", 0 == is->getLastOffset());
|
|
}
|
|
|
|
int main()
|
|
{
|
|
// This test is designed to work with a specified input file.
|
|
std::cout << "testing with ClosedFileInputSource\n";
|
|
ClosedFileInputSource cf("input");
|
|
do_tests(&cf);
|
|
std::cout << "testing with ClosedFileInputSource in stay open mode\n";
|
|
ClosedFileInputSource cf2("input");
|
|
cf2.stayOpen(true);
|
|
do_tests(&cf2);
|
|
cf2.stayOpen(false);
|
|
std::cout << "testing with FileInputSource\n";
|
|
FileInputSource f;
|
|
f.setFilename("input");
|
|
do_tests(&f);
|
|
std::cout << "all assertions passed" << std::endl;
|
|
return 0;
|
|
}
|