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Diffstat (limited to 'utils/pdfunite.cc')
| -rw-r--r-- | utils/pdfunite.cc | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/utils/pdfunite.cc b/utils/pdfunite.cc new file mode 100644 index 00000000..3b3d2bba --- /dev/null +++ b/utils/pdfunite.cc @@ -0,0 +1,176 @@ +//======================================================================== +// +// pdfunite.cc +// +// This file is licensed under the GPLv2 or later +// +// Copyright (C) 2011 Thomas Freitag <Thomas.Freitag@alfa.de> +// +//======================================================================== +#include <PDFDoc.h> +#include "parseargs.h" +#include "config.h" +#include <poppler-config.h> +#include <vector> + +static GBool printVersion = gFalse; +static GBool printHelp = gFalse; + +static const ArgDesc argDesc[] = { + {"-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} +}; + +/////////////////////////////////////////////////////////////////////////// +int main (int argc, char *argv[]) +/////////////////////////////////////////////////////////////////////////// +// Merge PDF files given by arguments 1 to argc-2 and write the result +// to the file specified by argument argc-1. +/////////////////////////////////////////////////////////////////////////// +{ + int objectsCount = 0; + Guint numOffset = 0; + std::vector<Object> pages; + std::vector<Guint> offsets; + XRef *yRef, *countRef; + FILE *f; + OutStream *outStr; + int i; + int j, rootNum; + std::vector<PDFDoc *>docs; + int majorVersion = 0; + int minorVersion = 0; + char *fileName = argv[argc - 1]; + int exitCode; + + exitCode = 99; + if (argc <= 3 || printVersion || printHelp) { + fprintf(stderr, "pdfunite version %s\n", PACKAGE_VERSION); + fprintf(stderr, "%s\n", popplerCopyright); + fprintf(stderr, "%s\n", xpdfCopyright); + if (!printVersion) { + printUsage("pdfunite", "<PDF-sourcefile-1>..<PDF-sourcefile-n> <PDF-destfile>", + argDesc); + } + if (printVersion || printHelp) + exitCode = 0; + return exitCode; + } + exitCode = 0; + + for (i = 1; i < argc - 1; i++) { + GooString *gfileName = new GooString(argv[i]); + PDFDoc *doc = new PDFDoc(gfileName, NULL, NULL, NULL); + if (doc->isOk() && !doc->isEncrypted()) { + docs.push_back(doc); + if (doc->getPDFMajorVersion() > majorVersion) { + majorVersion = doc->getPDFMajorVersion(); + minorVersion = doc->getPDFMinorVersion(); + } else if (doc->getPDFMajorVersion() == majorVersion) { + if (doc->getPDFMinorVersion() > minorVersion) { + minorVersion = doc->getPDFMinorVersion(); + } + } + } else if (doc->isOk()) { + error(-1, "Could not merge encrypted files ('%s')", argv[i]); + return -1; + } else { + error(-1, "Could not merge damaged documents ('%s')", argv[i]); + return -1; + } + } + + if (!(f = fopen(fileName, "wb"))) { + error(-1, "Could not open file '%s'", fileName); + return -1; + } + outStr = new FileOutStream(f, 0); + + yRef = new XRef(); + countRef = new XRef(); + yRef->add(0, 65535, 0, gFalse); + PDFDoc::writeHeader(outStr, majorVersion, minorVersion); + + for (i = 0; i < (int) docs.size(); i++) { + for (j = 1; j <= docs[i]->getNumPages(); j++) { + PDFRectangle *cropBox = NULL; + if (docs[i]->getCatalog()->getPage(j)->isCropped()) + cropBox = docs[i]->getCatalog()->getPage(j)->getCropBox(); + docs[i]->replacePageDict(j, + docs[i]->getCatalog()->getPage(j)->getRotate(), + docs[i]->getCatalog()->getPage(j)->getMediaBox(), cropBox, NULL); + Ref *refPage = docs[i]->getCatalog()->getPageRef(j); + Object page; + docs[i]->getXRef()->fetch(refPage->num, refPage->gen, &page); + pages.push_back(page); + offsets.push_back(numOffset); + Dict *pageDict = page.getDict(); + docs[i]->markPageObjects(pageDict, yRef, countRef, numOffset); + } + objectsCount += docs[i]->writePageObjects(outStr, yRef, numOffset); + numOffset = yRef->getNumObjects() + 1; + } + + rootNum = yRef->getNumObjects() + 1; + yRef->add(rootNum, 0, outStr->getPos(), gTrue); + outStr->printf("%d 0 obj\n", rootNum); + outStr->printf("<< /Type /Catalog /Pages %d 0 R", rootNum + 1); + outStr->printf(">>\nendobj\n"); + objectsCount++; + + yRef->add(rootNum + 1, 0, outStr->getPos(), gTrue); + outStr->printf("%d 0 obj\n", rootNum + 1); + outStr->printf("<< /Type /Pages /Kids ["); + for (j = 0; j < (int) pages.size(); j++) + outStr->printf(" %d 0 R", rootNum + j + 2); + outStr->printf(" ] /Count %d >>\nendobj\n", pages.size()); + objectsCount++; + + for (i = 0; i < (int) pages.size(); i++) { + yRef->add(rootNum + i + 2, 0, outStr->getPos(), gTrue); + outStr->printf("%d 0 obj\n", rootNum + i + 2); + outStr->printf("<< "); + Dict *pageDict = pages[i].getDict(); + for (j = 0; j < pageDict->getLength(); j++) { + if (j > 0) + outStr->printf(" "); + const char *key = pageDict->getKey(j); + Object value; + pageDict->getValNF(j, &value); + if (strcmp(key, "Parent") == 0) { + outStr->printf("/Parent %d 0 R", rootNum + 1); + } else { + outStr->printf("/%s ", key); + PDFDoc::writeObject(&value, NULL, outStr, yRef, offsets[i]); + } + value.free(); + } + outStr->printf(" >>\nendobj\n"); + objectsCount++; + } + Guint uxrefOffset = outStr->getPos(); + yRef->writeToFile(outStr, gFalse /* do not write unnecessary entries */ ); + + Ref ref; + ref.num = rootNum; + ref.gen = 0; + PDFDoc::writeTrailer(uxrefOffset, objectsCount, outStr, (GBool) gFalse, 0, + &ref, yRef, fileName, outStr->getPos()); + + outStr->close(); + fclose(f); + delete yRef; + delete countRef; + for (j = 0; j < (int) pages.size (); j++) pages[j].free(); + for (i = 0; i < (int) docs.size (); i++) delete docs[i]; + return exitCode; +} |