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#include "podofo.h"
#include "../PdfTest.h"
#include <iostream>
#include <stack>
#include <algorithm>
#include <string>
#include <iomanip>
#include <cstdio>
using namespace std;
using namespace PoDoFo;
static bool print_output = false;
void parse_contents( PdfContentsTokenizer* pTokenizer )
{
const char* pszToken = NULL;
PdfVariant var;
EPdfContentsType eType;
std::string str;
int numKeywords = 0;
int numVariants = 0;
std::stack<PdfVariant> stack;
while( pTokenizer->ReadNext( eType, pszToken, var ) )
{
if( eType == ePdfContentsType_Keyword )
{
++numKeywords;
if (print_output) std::cout << setw(12) << (numKeywords+numVariants)
<< " Keyword: " << pszToken << std::endl;
// support 'l' and 'm' tokens
if( strcmp( pszToken, "l" ) == 0 )
{
double dPosY = stack.top().GetReal();
stack.pop();
double dPosX = stack.top().GetReal();
stack.pop();
if(print_output) std::cout << string(12,' ') << " LineTo: " << dPosX << " " << dPosY << std::endl;
}
else if( strcmp( pszToken, "m" ) == 0 )
{
double dPosY = stack.top().GetReal();
stack.pop();
double dPosX = stack.top().GetReal();
stack.pop();
if(print_output) std::cout << string(12,' ') << " MoveTo: " << dPosX << " " << dPosY << std::endl;
}
}
else if ( eType == ePdfContentsType_Variant )
{
++numVariants;
var.ToString( str );
if(print_output) std::cout << setw(12) << (numKeywords+numVariants)
<< " Variant: " << str << std::endl;
stack.push( var );
}
else if (eType == ePdfContentsType_ImageData)
{
if (print_output) {
std::string d ( var.GetRawData().data() );
std::cout << string(13, ' ') << "Inline image data: " << d.size() << " bytes. Hex follows." << std::hex << std::endl;
std::cout << std::hex << std::setfill('0');
for ( std::string::iterator i = d.begin(); i != d.end(); i ++) {
std::cout << std::setw(2) << (static_cast<unsigned short>(*i) & 0x00FF);
}
std::cout << std::dec << std::setfill(' ') << std::endl;
}
}
else
{
// Impossible; type must be keyword or variant
PODOFO_RAISE_ERROR( ePdfError_InternalLogic );
}
}
cout << ' ' << setw(12) << numKeywords << " keywords, " << setw(12) << numVariants << " variants";
}
void parse_page( PdfMemDocument*, PdfPage* pPage )
{
PdfContentsTokenizer tokenizer( pPage );
parse_contents( &tokenizer );
}
void usage()
{
printf("Usage: ContentParser [-g] [-a] [-p] input_filename\n");
printf(" -a Process all pages of input, not just first\n");
printf(" -p Print parsed content stream to stdout\n");
}
int main( int argc, char* argv[] )
{
bool all_pages = false;
int firstPageNo = 0;
string inputFileName;
++argv;
--argc;
while (argc)
{
if( argv[0][0] == '-' )
{
// Single character flag
switch( argv[0][1] )
{
case 'a':
// Process all pages, not just first page
all_pages = true;
break;
case 'p':
// Print output, rather than parsing & checking
// silently.
print_output = true;
break;
case 'n':
// Page number request. Chars 2+ are page number int. Let's do
// this the quick and dirty way...
firstPageNo = atoi(argv[0]+2) - 1;
cerr << "Will process page: " << (firstPageNo+1) << endl;
break;
default:
usage();
return 1;
}
}
else
{
// Input filename
if (inputFileName.empty())
{
inputFileName = argv[0];
}
else
{
usage();
return 1;
}
}
++argv;
--argc;
}
if (inputFileName.empty())
{
usage();
return 1;
}
try
{
PdfMemDocument doc( inputFileName.c_str() );
if( !doc.GetPageCount() )
{
std::cerr << "This document contains no page!" << std::endl;
return 1;
}
int toPage = all_pages ? doc.GetPageCount() : firstPageNo + 1 ;
for ( int i = firstPageNo; i < toPage; ++i )
{
cout << "Processing page " << setw(6) << (i+1) << "..." << std::flush;
PdfPage* page = doc.GetPage( i );
PODOFO_RAISE_LOGIC_IF( !page, "Got null page pointer within valid page range" );
parse_page( &doc, page );
cout << " - page ok" << endl;
}
}
catch( const PdfError & e )
{
e.PrintErrorMsg();
return e.GetError();
}
cout << endl;
return 0;
}
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