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Current File : //usr/share/emscripten/tests/poppler/utils/pdftotext.cc
//========================================================================
//
// pdftotext.cc
//
// Copyright 1997-2003 Glyph & Cog, LLC
//
// Modified for Debian by Hamish Moffatt, 22 May 2002.
//
//========================================================================
//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2006 Dominic Lachowicz <cinamod@hotmail.com>
// Copyright (C) 2007-2008, 2010, 2011 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2009 Jan Jockusch <jan@jockusch.de>
// Copyright (C) 2010 Hib Eris <hib@hiberis.nl>
// Copyright (C) 2010 Kenneth Berland <ken@hero.com>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================
#include "config.h"
#include <poppler-config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include "parseargs.h"
#include "printencodings.h"
#include "goo/GooString.h"
#include "goo/gmem.h"
#include "GlobalParams.h"
#include "Object.h"
#include "Stream.h"
#include "Array.h"
#include "Dict.h"
#include "XRef.h"
#include "Catalog.h"
#include "Page.h"
#include "PDFDoc.h"
#include "PDFDocFactory.h"
#include "TextOutputDev.h"
#include "CharTypes.h"
#include "UnicodeMap.h"
#include "Error.h"
#include <string>
static void printInfoString(FILE *f, Dict *infoDict, char *key,
char *text1, char *text2, UnicodeMap *uMap);
static void printInfoDate(FILE *f, Dict *infoDict, char *key, char *fmt);
static int firstPage = 1;
static int lastPage = 0;
static double resolution = 72.0;
static int x = 0;
static int y = 0;
static int w = 0;
static int h = 0;
static GBool bbox = gFalse;
static GBool physLayout = gFalse;
static GBool rawOrder = gFalse;
static GBool htmlMeta = gFalse;
static char textEncName[128] = "";
static char textEOL[16] = "";
static GBool noPageBreaks = gFalse;
static char ownerPassword[33] = "\001";
static char userPassword[33] = "\001";
static GBool quiet = gFalse;
static GBool printVersion = gFalse;
static GBool printHelp = gFalse;
static GBool printEnc = gFalse;
static const ArgDesc argDesc[] = {
{"-f", argInt, &firstPage, 0,
"first page to convert"},
{"-l", argInt, &lastPage, 0,
"last page to convert"},
{"-r", argFP, &resolution, 0,
"resolution, in DPI (default is 72)"},
{"-x", argInt, &x, 0,
"x-coordinate of the crop area top left corner"},
{"-y", argInt, &y, 0,
"y-coordinate of the crop area top left corner"},
{"-W", argInt, &w, 0,
"width of crop area in pixels (default is 0)"},
{"-H", argInt, &h, 0,
"height of crop area in pixels (default is 0)"},
{"-layout", argFlag, &physLayout, 0,
"maintain original physical layout"},
{"-raw", argFlag, &rawOrder, 0,
"keep strings in content stream order"},
{"-htmlmeta", argFlag, &htmlMeta, 0,
"generate a simple HTML file, including the meta information"},
{"-enc", argString, textEncName, sizeof(textEncName),
"output text encoding name"},
{"-listenc",argFlag, &printEnc, 0,
"list available encodings"},
{"-eol", argString, textEOL, sizeof(textEOL),
"output end-of-line convention (unix, dos, or mac)"},
{"-nopgbrk", argFlag, &noPageBreaks, 0,
"don't insert page breaks between pages"},
{"-bbox", argFlag, &bbox, 0,
"output bounding box for each word and page size to html. Sets -htmlmeta"},
{"-opw", argString, ownerPassword, sizeof(ownerPassword),
"owner password (for encrypted files)"},
{"-upw", argString, userPassword, sizeof(userPassword),
"user password (for encrypted files)"},
{"-q", argFlag, &quiet, 0,
"don't print any messages or errors"},
{"-v", argFlag, &printVersion, 0,
"print copyright and version info"},
{"-h", argFlag, &printHelp, 0,
"print usage information"},
{"-help", argFlag, &printHelp, 0,
"print usage information"},
{"--help", argFlag, &printHelp, 0,
"print usage information"},
{"-?", argFlag, &printHelp, 0,
"print usage information"},
{NULL}
};
static std::string myStringReplace(const std::string &inString, const std::string &oldToken, const std::string &newToken) {
std::string result = inString;
size_t foundLoc;
int advance = 0;
do {
foundLoc = result.find(oldToken, advance);
if (foundLoc != std::string::npos){
result.replace(foundLoc, oldToken.length(), newToken);
advance = foundLoc + newToken.length();
}
} while (foundLoc != std::string::npos );
return result;
}
static std::string myXmlTokenReplace(const char *inString){
std::string myString(inString);
myString = myStringReplace(myString, "&", "&" );
myString = myStringReplace(myString, "'", "'" );
myString = myStringReplace(myString, "\"", """ );
myString = myStringReplace(myString, "<", "<" );
myString = myStringReplace(myString, ">", ">" );
return myString;
}
int main(int argc, char *argv[]) {
PDFDoc *doc;
GooString *fileName;
GooString *textFileName;
GooString *ownerPW, *userPW;
TextOutputDev *textOut;
FILE *f;
UnicodeMap *uMap;
Object info;
GBool ok;
char *p;
int exitCode;
exitCode = 99;
// parse args
ok = parseArgs(argDesc, &argc, argv);
if (bbox) {
htmlMeta = gTrue;
}
if (!ok || (argc < 2 && !printEnc) || argc > 3 || printVersion || printHelp) {
fprintf(stderr, "pdftotext version %s\n", PACKAGE_VERSION);
fprintf(stderr, "%s\n", popplerCopyright);
fprintf(stderr, "%s\n", xpdfCopyright);
if (!printVersion) {
printUsage("pdftotext", "<PDF-file> [<text-file>]", argDesc);
}
if (printVersion || printHelp)
exitCode = 0;
goto err0;
}
// read config file
globalParams = new GlobalParams();
if (printEnc) {
printEncodings();
delete globalParams;
exitCode = 0;
goto err0;
}
fileName = new GooString(argv[1]);
if (textEncName[0]) {
globalParams->setTextEncoding(textEncName);
}
if (textEOL[0]) {
if (!globalParams->setTextEOL(textEOL)) {
fprintf(stderr, "Bad '-eol' value on command line\n");
}
}
if (noPageBreaks) {
globalParams->setTextPageBreaks(gFalse);
}
if (quiet) {
globalParams->setErrQuiet(quiet);
}
// get mapping to output encoding
if (!(uMap = globalParams->getTextEncoding())) {
error(-1, "Couldn't get text encoding");
delete fileName;
goto err1;
}
// open PDF file
if (ownerPassword[0] != '\001') {
ownerPW = new GooString(ownerPassword);
} else {
ownerPW = NULL;
}
if (userPassword[0] != '\001') {
userPW = new GooString(userPassword);
} else {
userPW = NULL;
}
if (fileName->cmp("-") == 0) {
delete fileName;
fileName = new GooString("fd://0");
}
doc = PDFDocFactory().createPDFDoc(*fileName, ownerPW, userPW);
if (userPW) {
delete userPW;
}
if (ownerPW) {
delete ownerPW;
}
if (!doc->isOk()) {
exitCode = 1;
goto err2;
}
#ifdef ENFORCE_PERMISSIONS
// check for copy permission
if (!doc->okToCopy()) {
error(-1, "Copying of text from this document is not allowed.");
exitCode = 3;
goto err2;
}
#endif
// construct text file name
if (argc == 3) {
textFileName = new GooString(argv[2]);
} else if (fileName->cmp("fd://0") == 0) {
error(-1, "You have to provide an output filename when reading form stdin.");
goto err2;
} else {
p = fileName->getCString() + fileName->getLength() - 4;
if (!strcmp(p, ".pdf") || !strcmp(p, ".PDF")) {
textFileName = new GooString(fileName->getCString(),
fileName->getLength() - 4);
} else {
textFileName = fileName->copy();
}
textFileName->append(htmlMeta ? ".html" : ".txt");
}
// get page range
if (firstPage < 1) {
firstPage = 1;
}
if (lastPage < 1 || lastPage > doc->getNumPages()) {
lastPage = doc->getNumPages();
}
// write HTML header
if (htmlMeta) {
if (!textFileName->cmp("-")) {
f = stdout;
} else {
if (!(f = fopen(textFileName->getCString(), "wb"))) {
error(-1, "Couldn't open text file '%s'", textFileName->getCString());
exitCode = 2;
goto err3;
}
}
fputs("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">", f);
fputs("<html xmlns=\"http://www.w3.org/1999/xhtml\">\n", f);
fputs("<head>\n", f);
doc->getDocInfo(&info);
if (info.isDict()) {
Object obj;
if (info.getDict()->lookup("Title", &obj)->isString()) {
printInfoString(f, info.getDict(), "Title", "<title>", "</title>\n", uMap);
} else {
fputs("<title></title>\n", f);
}
obj.free();
printInfoString(f, info.getDict(), "Subject",
"<meta name=\"Subject\" content=\"", "\"/>\n", uMap);
printInfoString(f, info.getDict(), "Keywords",
"<meta name=\"Keywords\" content=\"", "\"/>\n", uMap);
printInfoString(f, info.getDict(), "Author",
"<meta name=\"Author\" content=\"", "\"/>\n", uMap);
printInfoString(f, info.getDict(), "Creator",
"<meta name=\"Creator\" content=\"", "\"/>\n", uMap);
printInfoString(f, info.getDict(), "Producer",
"<meta name=\"Producer\" content=\"", "\"/>\n", uMap);
printInfoDate(f, info.getDict(), "CreationDate",
"<meta name=\"CreationDate\" content=\"\"/>\n");
printInfoDate(f, info.getDict(), "LastModifiedDate",
"<meta name=\"ModDate\" content=\"\"/>\n");
}
info.free();
fputs("</head>\n", f);
fputs("<body>\n", f);
if (!bbox) fputs("<pre>\n", f);
if (f != stdout) {
fclose(f);
}
}
// write text file
if (bbox) {
textOut = new TextOutputDev(NULL, physLayout, rawOrder, htmlMeta);
if (!(f = fopen(textFileName->getCString(), "ab"))) {
error(-1, "Couldn't open text file '%s' for append", textFileName->getCString());
exitCode = 2;
delete textOut;
goto err3;
}
if (textOut->isOk()) {
fprintf(f, "<doc>\n");
for (int page = firstPage; page <= lastPage; ++page) {
fprintf(f, " <page width=\"%f\" height=\"%f\">\n",doc->getPageCropWidth(page), doc->getPageCropHeight(page));
doc->displayPage(textOut, page, resolution, resolution, 0, gTrue, gFalse, gFalse);
TextWordList *wordlist = textOut->makeWordList();
const int word_length = wordlist != NULL ? wordlist->getLength() : 0;
TextWord *word;
double xMinA, yMinA, xMaxA, yMaxA;
if (word_length == 0)
fprintf(stderr, "no word list\n");
for (int i = 0; i < word_length; ++i) {
word = wordlist->get(i);
word->getBBox(&xMinA, &yMinA, &xMaxA, &yMaxA);
const std::string myString = myXmlTokenReplace(word->getText()->getCString());
fprintf(f," <word xMin=\"%f\" yMin=\"%f\" xMax=\"%f\" yMax=\"%f\">%s</word>\n", xMinA, yMinA, xMaxA, yMaxA, myString.c_str());
}
fprintf(f, " </page>\n");
delete wordlist;
}
fprintf(f, "</doc>\n");
}
fclose(f);
} else {
textOut = new TextOutputDev(textFileName->getCString(),
physLayout, rawOrder, htmlMeta);
if (textOut->isOk()) {
if ((w==0) && (h==0) && (x==0) && (y==0)) {
doc->displayPages(textOut, firstPage, lastPage, resolution, resolution, 0,
gTrue, gFalse, gFalse);
} else {
for (int page = firstPage; page <= lastPage; ++page) {
doc->displayPageSlice(textOut, page, resolution, resolution, 0,
gTrue, gFalse, gFalse,
x, y, w, h);
}
}
} else {
delete textOut;
exitCode = 2;
goto err3;
}
}
delete textOut;
// write end of HTML file
if (htmlMeta) {
if (!textFileName->cmp("-")) {
f = stdout;
} else {
if (!(f = fopen(textFileName->getCString(), "ab"))) {
error(-1, "Couldn't open text file '%s'", textFileName->getCString());
exitCode = 2;
goto err3;
}
}
if (!bbox) fputs("</pre>\n", f);
fputs("</body>\n", f);
fputs("</html>\n", f);
if (f != stdout) {
fclose(f);
}
}
exitCode = 0;
// clean up
err3:
delete textFileName;
err2:
delete doc;
delete fileName;
uMap->decRefCnt();
err1:
delete globalParams;
err0:
// check for memory leaks
Object::memCheck(stderr);
gMemReport(stderr);
return exitCode;
}
static void printInfoString(FILE *f, Dict *infoDict, char *key,
char *text1, char *text2, UnicodeMap *uMap) {
Object obj;
GooString *s1;
GBool isUnicode;
Unicode u;
char buf[8];
int i, n;
if (infoDict->lookup(key, &obj)->isString()) {
fputs(text1, f);
s1 = obj.getString();
if ((s1->getChar(0) & 0xff) == 0xfe &&
(s1->getChar(1) & 0xff) == 0xff) {
isUnicode = gTrue;
i = 2;
} else {
isUnicode = gFalse;
i = 0;
}
while (i < obj.getString()->getLength()) {
if (isUnicode) {
u = ((s1->getChar(i) & 0xff) << 8) |
(s1->getChar(i+1) & 0xff);
i += 2;
} else {
u = s1->getChar(i) & 0xff;
++i;
}
n = uMap->mapUnicode(u, buf, sizeof(buf));
fwrite(buf, 1, n, f);
}
fputs(text2, f);
}
obj.free();
}
static void printInfoDate(FILE *f, Dict *infoDict, char *key, char *fmt) {
Object obj;
char *s;
if (infoDict->lookup(key, &obj)->isString()) {
s = obj.getString()->getCString();
if (s[0] == 'D' && s[1] == ':') {
s += 2;
}
fprintf(f, fmt, s);
}
obj.free();
}
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