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extract-text-cli.cpp
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extract-text-cli.cpp
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#include <iostream>
#include <string>
#include "EStatusCode.h"
#include "BoxingBase.h"
#include "OutputFile.h"
#include "InputStringStream.h"
#include "OutputStreamTraits.h"
#include "IByteReaderWithPosition.h"
#include "IByteWriterWithPosition.h"
#include "TextExtraction.h"
#include "TableExtraction.h"
#include "lib/text-composition/TextComposer.h"
using namespace std;
using namespace PDFHummus;
static void ShowUsage(const string& name)
{
cerr << "Usage: " << name << " filepath <option(s)>\n"
<< "filepath - pdf file path\n"
<< "Options:\n"
<< "\t-s, --start <d>\t\t\t\tstart text extraction from a page index. use negative numbers to subtract from pages count\n"
<< "\t-e, --end <d>\t\t\t\tend text extraction upto page index. use negative numbers to subtract from pages count\n"
#if (SUPPORT_ICU_BIDI==1)
<< "\t-b, --bidi <RTL|LTR>\t\t\tuse bidi algo to convert visual to logical. provide default direction per document writing direction.\n"
#endif
<< "\t-p, --spacing <BOTH|HOR|VER|NONE>\tadd spaces between pieces of text considering their relative positions. default is BOTH\n"
<< "\t-t, --tables\t\t\t\textract tables instead of text. Each table is represented in CSV\n"
<< "\t-o, --output /path/to/file\t\twrite result to output file (or files for tables export)\n"
<< "\t-q, --quiet\t\t\t\tquiet run. only shows errors and warnings\n"
<< "\t-h, --help\t\t\t\tShow this help message\n"
<< "\t-d, --debug /path/to/file\t\tcreate debug output file\n"
<< endl;
}
static const string BIDI_LTR = "LTR";
static const string BIDI_RTL = "RTL";
static const string SPACING_BOTH = "BOTH";
static const string SPACING_HOR = "HOR";
static const string SPACING_VER = "VER";
static const string SPACING_NONE = "NONE";
static const string scCSVExtension = ".csv";
static const string scDot = ".";
static const Byte scUTF8Bom[3] = {0xEF,0xBB,0xBF};
int main(int argc, char* argv[])
{
if(argc < 2) {
ShowUsage(argv[0]);
return 1;
}
string filePath = argv[1];
bool debugging = false;
string debugPath = "";
bool writeToOutputFile = false;
string outputFilePath = "";
TextComposer::ESpacing spacing = TextComposer::eSpacingBoth;
long startPage = 0;
long endPage = -1;
bool quiet = false;
long bidiFlag = -1;
bool extractTables = false;
for (int i = 2; i < argc; ++i) {
std::string arg = argv[i];
if ((arg == "-h") || (arg == "--help")) {
ShowUsage(argv[0]);
return 0;
} else if ((arg == "-q") || (arg == "--quiet")) {
quiet = true;
} else if ((arg == "-t") || (arg == "--tables")) {
extractTables = true;
} else if ((arg == "-s") || (arg == "--start")) {
if (i + 1 < argc) {
startPage = Long(argv[++i]);
} else {
std::cerr << "--start option requires one argument, which is the page to start." << std::endl;
return 1;
}
} else if ((arg == "-e") || (arg == "--end")) {
if (i + 1 < argc) {
endPage = Long(argv[++i]);
} else {
std::cerr << "--end option requires one argument, which is the page to end." << std::endl;
return 1;
}
#if (SUPPORT_ICU_BIDI==1)
} else if ((arg == "-b") || (arg == "--bidi")) {
if (i + 1 < argc) {
string argString = argv[++i];
if(argString == BIDI_LTR)
bidiFlag = 0;
else if(argString == BIDI_RTL)
bidiFlag = 1;
else {
std::cerr << "--bidi option requires one argument to specify document direction, use LTR or RTL." << std::endl;
return 1;
}
} else {
std::cerr << "--bidi option requires one argument to specify document direction, use LTR or RTL." << std::endl;
return 1;
}
#endif
} else if((arg == "-p") || (arg == "--spacing")) {
if (i + 1 < argc) {
string argString = argv[++i];
if(argString == SPACING_BOTH)
spacing = TextComposer::eSpacingBoth;
else if(argString == SPACING_HOR)
spacing = TextComposer::eSpacingHorizontal;
else if(argString == SPACING_VER)
spacing = TextComposer::eSpacingVertical;
else if(argString == SPACING_NONE)
spacing = TextComposer::eSpacingNone;
else {
std::cerr << "--spacing option requires one argument, which is the spaces addition policy. Use either BOTH, HOR (for horizontal only), VER (for vertical only) or NONE." << std::endl;
return 1;
}
} else {
std::cerr << "--spacing option requires one argument, which is the spaces addition policy. Use either BOTH, HOR (for horizontal only), VER (for vertical only) or NONE." << std::endl;
return 1;
}
} else if((arg == "-d") || (arg == "--debug")) {
debugging = true;
if (i + 1 < argc) {
debugPath = argv[++i];
} else {
std::cerr << "--debug option requires one argument, which is the debug output file path." << std::endl;
return 1;
}
} else if((arg == "-o") || (arg == "--output")) {
writeToOutputFile = true;
if (i + 1 < argc) {
outputFilePath = argv[++i];
} else {
std::cerr << "--output option requires one argument, which is the debug output file path." << std::endl;
return 1;
}
} else {
cerr << "Unrecognized option " << arg << std::endl ;
ShowUsage(argv[0]);
return 1;
}
}
EStatusCode status;
if(debugging) {
TextExtraction textExtraction;
status = textExtraction.DecryptPDFForDebugging(filePath, debugPath);
} else {
if(extractTables) {
TableExtraction tableExtraction;
status = tableExtraction.ExtractTables(filePath, startPage, endPage);
if(status != eSuccess) {
cerr << "Error: " << tableExtraction.LatestError.description.c_str() << endl;
}
ExtractionWarningList::iterator it = tableExtraction.LatestWarnings.begin();
for(; it != tableExtraction.LatestWarnings.end(); ++it) {
cerr << "Warning: " << it->description.c_str() << endl;
}
if(status == eSuccess) {
if(writeToOutputFile) {
size_t extensionPos = outputFilePath.find_last_of(scDot);
string baseOutputFilePath = outputFilePath.substr(0, extensionPos);
string filePath = baseOutputFilePath;
int ordinal = 0;
// writing each table to a separate CSV
TableListList::iterator itPages = tableExtraction.tablesForPages.begin();
for(; itPages != tableExtraction.tablesForPages.end() && status == eSuccess; ++itPages) {
TableList::iterator itTables = itPages->begin();
for(; itTables != itPages->end() && status == eSuccess; ++itTables) {
OutputFile outputFile;
string fileFullPath = filePath + scCSVExtension;
status = outputFile.OpenFile(fileFullPath);
if (status != eSuccess) {
cerr << "Error: Cannot open target file path for writing in" << fileFullPath.c_str() << endl;
} else {
outputFile.GetOutputStream()->Write(scUTF8Bom,3);
string result = tableExtraction.GetTableAsCSVText(*itTables,bidiFlag, spacing);
InputStringStream textStream(result);
OutputStreamTraits streamCopier((IByteWriter*)outputFile.GetOutputStream());
status = streamCopier.CopyToOutputStream(&textStream);
cerr << "Wrote table to " << fileFullPath.c_str() << endl;
}
++ordinal;
filePath = baseOutputFilePath + Int(ordinal).ToString();
}
}
} else if(!quiet) {
cout<<tableExtraction.GetAllAsCSVText(bidiFlag, spacing).c_str();
}
}
} else {
TextExtraction textExtraction;
status = textExtraction.ExtractText(filePath, startPage, endPage);
if(status != eSuccess) {
cerr << "Error: " << textExtraction.LatestError.description.c_str() << endl;
}
ExtractionWarningList::iterator it = textExtraction.LatestWarnings.begin();
for(; it != textExtraction.LatestWarnings.end(); ++it) {
cerr << "Warning: " << it->description.c_str() << endl;
}
if(status == eSuccess) {
if(writeToOutputFile) {
OutputFile outputFile;
status = outputFile.OpenFile(outputFilePath);
if (status != eSuccess) {
cerr << "Error: Cannot open target file path for writing in" << outputFilePath.c_str() << endl;
}
else {
outputFile.GetOutputStream()->Write(scUTF8Bom,3);
string result = textExtraction.GetResultsAsText(bidiFlag, spacing);
InputStringStream textStream(result);
OutputStreamTraits streamCopier((IByteWriter*)outputFile.GetOutputStream());
status = streamCopier.CopyToOutputStream(&textStream);
}
cout <<"Wrote text to " << outputFilePath.c_str() << endl;
}
else if(!quiet) {
cout<<textExtraction.GetResultsAsText(bidiFlag, spacing).c_str();
}
}
}
}
return status == eSuccess ? 0:1;
}