+++ /dev/null
-//========================================================================
-//
-// PDFDoc.cc
-//
-// Copyright 1996-2003 Glyph & Cog, LLC
-//
-//========================================================================
-
-#include <aconf.h>
-
-#ifdef USE_GCC_PRAGMAS
-#pragma implementation
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <string.h>
-#ifdef WIN32
-# include <windows.h>
-#endif
-#include "GString.h"
-#include "config.h"
-#include "GlobalParams.h"
-#include "Page.h"
-#include "Catalog.h"
-#include "Stream.h"
-#include "XRef.h"
-#include "Link.h"
-#include "OutputDev.h"
-#include "Error.h"
-#include "ErrorCodes.h"
-#include "Lexer.h"
-#include "Parser.h"
-#include "SecurityHandler.h"
-#ifndef DISABLE_OUTLINE
-#include "Outline.h"
-#endif
-#include "PDFDoc.h"
-
-//------------------------------------------------------------------------
-
-#define headerSearchSize 1024 // read this many bytes at beginning of
- // file to look for '%PDF'
-
-//------------------------------------------------------------------------
-// PDFDoc
-//------------------------------------------------------------------------
-
-PDFDoc::PDFDoc(GString *fileNameA, GString *ownerPassword,
- GString *userPassword, void *guiDataA) {
- Object obj;
- GString *fileName1, *fileName2;
-
- ok = gFalse;
- errCode = errNone;
-
- guiData = guiDataA;
-
- file = NULL;
- str = NULL;
- xref = NULL;
- catalog = NULL;
- links = NULL;
-#ifndef DISABLE_OUTLINE
- outline = NULL;
-#endif
-
- fileName = fileNameA;
- fileName1 = fileName;
-
-
- // try to open file
- fileName2 = NULL;
-#ifdef VMS
- if (!(file = fopen(fileName1->getCString(), "rb", "ctx=stm"))) {
- error(-1, "Couldn't open file '%s'", fileName1->getCString());
- errCode = errOpenFile;
- return;
- }
-#else
- if (!(file = fopen(fileName1->getCString(), "rb"))) {
- fileName2 = fileName->copy();
- fileName2->lowerCase();
- if (!(file = fopen(fileName2->getCString(), "rb"))) {
- fileName2->upperCase();
- if (!(file = fopen(fileName2->getCString(), "rb"))) {
- error(-1, "Couldn't open file '%s'", fileName->getCString());
- delete fileName2;
- errCode = errOpenFile;
- return;
- }
- }
- delete fileName2;
- }
-#endif
-
- // create stream
- obj.initNull();
- str = new FileStream(file, 0, gFalse, 0, &obj);
-
- ok = setup(ownerPassword, userPassword);
-}
-
-#ifdef WIN32
-PDFDoc::PDFDoc(wchar_t *fileNameA, int fileNameLen, GString *ownerPassword,
- GString *userPassword, void *guiDataA) {
- OSVERSIONINFO version;
- wchar_t fileName2[_MAX_PATH + 1];
- Object obj;
- int i;
-
- ok = gFalse;
- errCode = errNone;
-
- guiData = guiDataA;
-
- file = NULL;
- str = NULL;
- xref = NULL;
- catalog = NULL;
- links = NULL;
-#ifndef DISABLE_OUTLINE
- outline = NULL;
-#endif
-
- //~ file name should be stored in Unicode (?)
- fileName = new GString();
- for (i = 0; i < fileNameLen; ++i) {
- fileName->append((char)fileNameA[i]);
- }
-
- // zero-terminate the file name string
- for (i = 0; i < fileNameLen && i < _MAX_PATH; ++i) {
- fileName2[i] = fileNameA[i];
- }
- fileName2[i] = 0;
-
- // try to open file
- // NB: _wfopen is only available in NT
- version.dwOSVersionInfoSize = sizeof(version);
- GetVersionEx(&version);
- if (version.dwPlatformId == VER_PLATFORM_WIN32_NT) {
- file = _wfopen(fileName2, L"rb");
- } else {
- file = fopen(fileName->getCString(), "rb");
- }
- if (!file) {
- error(-1, "Couldn't open file '%s'", fileName->getCString());
- errCode = errOpenFile;
- return;
- }
-
- // create stream
- obj.initNull();
- str = new FileStream(file, 0, gFalse, 0, &obj);
-
- ok = setup(ownerPassword, userPassword);
-}
-#endif
-
-PDFDoc::PDFDoc(BaseStream *strA, GString *ownerPassword,
- GString *userPassword, void *guiDataA) {
- ok = gFalse;
- errCode = errNone;
- guiData = guiDataA;
- fileName = NULL;
- file = NULL;
- str = strA;
- xref = NULL;
- catalog = NULL;
- links = NULL;
-#ifndef DISABLE_OUTLINE
- outline = NULL;
-#endif
- ok = setup(ownerPassword, userPassword);
-}
-
-GBool PDFDoc::setup(GString *ownerPassword, GString *userPassword) {
- str->reset();
-
- // check header
- checkHeader();
-
- // read xref table
- xref = new XRef(str);
- if (!xref->isOk()) {
- error(-1, "Couldn't read xref table");
- errCode = xref->getErrorCode();
- return gFalse;
- }
-
- // check for encryption
- if (!checkEncryption(ownerPassword, userPassword)) {
- errCode = errEncrypted;
- return gFalse;
- }
-
- // read catalog
- catalog = new Catalog(xref);
- if (!catalog->isOk()) {
- error(-1, "Couldn't read page catalog");
- errCode = errBadCatalog;
- return gFalse;
- }
-
-#ifndef DISABLE_OUTLINE
- // read outline
- outline = new Outline(catalog->getOutline(), xref);
-#endif
-
- // done
- return gTrue;
-}
-
-PDFDoc::~PDFDoc() {
-#ifndef DISABLE_OUTLINE
- if (outline) {
- delete outline;
- }
-#endif
- if (catalog) {
- delete catalog;
- }
- if (xref) {
- delete xref;
- }
- if (str) {
- delete str;
- }
- if (file) {
- fclose(file);
- }
- if (fileName) {
- delete fileName;
- }
- if (links) {
- delete links;
- }
-}
-
-// Check for a PDF header on this stream. Skip past some garbage
-// if necessary.
-void PDFDoc::checkHeader() {
- char hdrBuf[headerSearchSize+1];
- char *p;
- int i;
-
- pdfVersion = 0;
- for (i = 0; i < headerSearchSize; ++i) {
- hdrBuf[i] = str->getChar();
- }
- hdrBuf[headerSearchSize] = '\0';
- for (i = 0; i < headerSearchSize - 5; ++i) {
- if (!strncmp(&hdrBuf[i], "%PDF-", 5)) {
- break;
- }
- }
- if (i >= headerSearchSize - 5) {
- error(-1, "May not be a PDF file (continuing anyway)");
- return;
- }
- str->moveStart(i);
- if (!(p = strtok(&hdrBuf[i+5], " \t\n\r"))) {
- error(-1, "May not be a PDF file (continuing anyway)");
- return;
- }
- pdfVersion = atof(p);
- if (!(hdrBuf[i+5] >= '0' && hdrBuf[i+5] <= '9') ||
- pdfVersion > supportedPDFVersionNum + 0.0001) {
- error(-1, "PDF version %s -- xpdf supports version %s"
- " (continuing anyway)", p, supportedPDFVersionStr);
- }
-}
-
-GBool PDFDoc::checkEncryption(GString *ownerPassword, GString *userPassword) {
- Object encrypt;
- GBool encrypted;
- SecurityHandler *secHdlr;
- GBool ret;
-
- xref->getTrailerDict()->dictLookup("Encrypt", &encrypt);
- if ((encrypted = encrypt.isDict())) {
- if ((secHdlr = SecurityHandler::make(this, &encrypt))) {
- if (secHdlr->checkEncryption(ownerPassword, userPassword)) {
- // authorization succeeded
- xref->setEncryption(secHdlr->getPermissionFlags(),
- secHdlr->getOwnerPasswordOk(),
- secHdlr->getFileKey(),
- secHdlr->getFileKeyLength(),
- secHdlr->getEncVersion());
- ret = gTrue;
- } else {
- // authorization failed
- ret = gFalse;
- }
- delete secHdlr;
- } else {
- // couldn't find the matching security handler
- ret = gFalse;
- }
- } else {
- // document is not encrypted
- ret = gTrue;
- }
- encrypt.free();
- return ret;
-}
-
-void PDFDoc::displayPage(OutputDev *out, int page, double hDPI, double vDPI,
- int rotate, GBool useMediaBox, GBool crop,
- GBool doLinks,
- GBool (*abortCheckCbk)(void *data),
- void *abortCheckCbkData) {
- Page *p;
-
- if (globalParams->getPrintCommands()) {
- printf("***** page %d *****\n", page);
- }
- p = catalog->getPage(page);
- if (doLinks) {
- if (links) {
- delete links;
- }
- getLinks(p);
- p->display(out, hDPI, vDPI, rotate, useMediaBox, crop, links, catalog,
- abortCheckCbk, abortCheckCbkData);
- } else {
- p->display(out, hDPI, vDPI, rotate, useMediaBox, crop, NULL, catalog,
- abortCheckCbk, abortCheckCbkData);
- }
-}
-
-void PDFDoc::displayPages(OutputDev *out, int firstPage, int lastPage,
- double hDPI, double vDPI, int rotate,
- GBool useMediaBox, GBool crop, GBool doLinks,
- GBool (*abortCheckCbk)(void *data),
- void *abortCheckCbkData) {
- int page;
-
- for (page = firstPage; page <= lastPage; ++page) {
- displayPage(out, page, hDPI, vDPI, rotate, useMediaBox, crop, doLinks,
- abortCheckCbk, abortCheckCbkData);
- }
-}
-
-void PDFDoc::displayPageSlice(OutputDev *out, int page,
- double hDPI, double vDPI, int rotate,
- GBool useMediaBox, GBool crop, GBool doLinks,
- int sliceX, int sliceY, int sliceW, int sliceH,
- GBool (*abortCheckCbk)(void *data),
- void *abortCheckCbkData) {
- Page *p;
-
- p = catalog->getPage(page);
- if (doLinks) {
- if (links) {
- delete links;
- }
- getLinks(p);
- p->displaySlice(out, hDPI, vDPI, rotate, useMediaBox, crop,
- sliceX, sliceY, sliceW, sliceH,
- links, catalog, abortCheckCbk, abortCheckCbkData);
- } else {
- p->displaySlice(out, hDPI, vDPI, rotate, useMediaBox, crop,
- sliceX, sliceY, sliceW, sliceH,
- NULL, catalog, abortCheckCbk, abortCheckCbkData);
- }
-}
-
-Links *PDFDoc::takeLinks() {
- Links *ret;
-
- ret = links;
- links = NULL;
- return ret;
-}
-
-GBool PDFDoc::isLinearized() {
- Parser *parser;
- Object obj1, obj2, obj3, obj4, obj5;
- GBool lin;
-
- lin = gFalse;
- obj1.initNull();
- parser = new Parser(xref,
- new Lexer(xref,
- str->makeSubStream(str->getStart(), gFalse, 0, &obj1)));
- parser->getObj(&obj1);
- parser->getObj(&obj2);
- parser->getObj(&obj3);
- parser->getObj(&obj4);
- if (obj1.isInt() && obj2.isInt() && obj3.isCmd("obj") &&
- obj4.isDict()) {
- obj4.dictLookup("Linearized", &obj5);
- if (obj5.isNum() && obj5.getNum() > 0) {
- lin = gTrue;
- }
- obj5.free();
- }
- obj4.free();
- obj3.free();
- obj2.free();
- obj1.free();
- delete parser;
- return lin;
-}
-
-GBool PDFDoc::saveAs(GString *name) {
- FILE *f;
- int c;
-
- if (!(f = fopen(name->getCString(), "wb"))) {
- error(-1, "Couldn't open file '%s'", name->getCString());
- return gFalse;
- }
- str->reset();
- while ((c = str->getChar()) != EOF) {
- fputc(c, f);
- }
- str->close();
- fclose(f);
- return gTrue;
-}
-
-void PDFDoc::getLinks(Page *page) {
- Object obj;
-
- links = new Links(page->getAnnots(&obj), catalog->getBaseURI());
- obj.free();
-}
git.asbjorn.biz / swftools.git / blobdiff