static void showobject(int num, int gen)
{
fz_error error;
fz_obj *obj;
if (!xref)
die(fz_throw("no file specified"));
error = pdf_loadobject(&obj, xref, num, gen);
if (error)
die(error);
if (pdf_isstream(xref, num, gen))
{
printf("%d %d obj\n", num, gen);
fz_debugobj(obj);
printf("stream\n");
showstream(num, gen);
printf("endstream\n");
printf("endobj\n\n");
}
else
{
printf("%d %d obj\n", num, gen);
fz_debugobj(obj);
printf("endobj\n\n");
}
fz_dropobj(obj);
}
static fz_error
pdf_repairobjstm(pdf_xref *xref, int num, int gen)
{
fz_error error;
fz_obj *obj;
fz_stream *stm;
int tok;
int i, n, count;
char buf[256];
error = pdf_loadobject(&obj, xref, num, gen);
if (error)
return fz_rethrow(error, "cannot load object stream object (%d %d R)", num, gen);
count = fz_toint(fz_dictgets(obj, "N"));
fz_dropobj(obj);
error = pdf_openstream(&stm, xref, num, gen);
if (error)
return fz_rethrow(error, "cannot open object stream object (%d %d R)", num, gen);
for (i = 0; i < count; i++)
{
error = pdf_lex(&tok, stm, buf, sizeof buf, &n);
if (error || tok != PDF_TINT)
{
fz_close(stm);
return fz_rethrow(error, "corrupt object stream (%d %d R)", num, gen);
}
n = atoi(buf);
if (n >= xref->len)
pdf_resizexref(xref, n + 1);
xref->table[n].ofs = num;
xref->table[n].gen = i;
xref->table[n].stmofs = 0;
xref->table[n].obj = nil;
xref->table[n].type = 'o';
error = pdf_lex(&tok, stm, buf, sizeof buf, &n);
if (error || tok != PDF_TINT)
{
fz_close(stm);
return fz_rethrow(error, "corrupt object stream (%d %d R)", num, gen);
}
}
fz_close(stm);
return fz_okay;
}
void preloadobjstms(void)
{
fz_error *error;
fz_obj *obj;
int i;
for (i = 0; i < src->len; i++)
{
if (src->table[i].type == 'o')
{
error = pdf_loadobject(&obj, src, i, 0);
if (error) die(error);
fz_dropobj(obj);
}
}
}
static void preloadobjstms(void)
{
fz_error error;
fz_obj *obj;
int num;
for (num = 0; num < xref->len; num++)
{
if (xref->table[num].type == 'o')
{
error = pdf_loadobject(&obj, xref, num, 0);
if (error)
die(error);
fz_dropobj(obj);
}
}
}
static void writeobject(int num, int gen)
{
fz_error error;
fz_obj *obj;
fz_obj *type;
error = pdf_loadobject(&obj, xref, num, gen);
if (error)
die(error);
/* skip ObjStm and XRef objects */
if (fz_isdict(obj))
{
type = fz_dictgets(obj, "Type");
if (fz_isname(type) && !strcmp(fz_toname(type), "ObjStm"))
{
uselist[num] = 0;
fz_dropobj(obj);
return;
}
if (fz_isname(type) && !strcmp(fz_toname(type), "XRef"))
{
uselist[num] = 0;
fz_dropobj(obj);
return;
}
}
if (!pdf_isstream(xref, num, gen))
{
fprintf(out, "%d %d obj\n", num, gen);
fz_fprintobj(out, obj, !doexpand);
fprintf(out, "endobj\n\n");
}
else
{
if (doexpand && !pdf_isjpximage(obj))
expandstream(obj, num, gen);
else
copystream(obj, num, gen);
}
fz_dropobj(obj);
}
static void showobject(int num, int gen)
{
fz_error error;
fz_obj *obj;
if (!xref)
die(fz_throw("no file specified"));
error = pdf_loadobject(&obj, xref, num, gen);
if (error)
die(error);
if (isimage(obj))
saveimage(obj, num, gen);
else if (isfontdesc(obj))
savefont(obj, num, gen);
fz_dropobj(obj);
}
fz_error
pdf_repairobjstms(pdf_xref *xref)
{
fz_obj *dict;
int i;
for (i = 0; i < xref->len; i++)
{
if (xref->table[i].stmofs)
{
pdf_loadobject(&dict, xref, i, 0);
if (!strcmp(fz_toname(fz_dictgets(dict, "Type")), "ObjStm"))
pdf_repairobjstm(xref, i, 0);
fz_dropobj(dict);
}
}
return fz_okay;
}
void
cleanexpand(void)
{
fz_error *error;
fz_obj *stmobj;
fz_buffer *buf;
fz_obj *stmlen;
int i, gen;
for (i = 0; i < src->len; i++)
{
if (src->table[i].type == 'n')
{
gen = src->table[i].gen;
if (pdf_isstream(src, i, gen))
{
error = pdf_loadobject(&stmobj, src, i, gen);
if (error) die(error);
error = pdf_loadstream(&buf, src, i, gen);
if (error) die(error);
fz_dictdels(stmobj, "Filter");
fz_dictdels(stmobj, "DecodeParms");
error = fz_newint(&stmlen, buf->wp - buf->rp);
if (error) die(error);
error = fz_dictputs(stmobj, "Length", stmlen);
if (error) die(error);
fz_dropobj(stmlen);
pdf_updateobject(src, i, gen, stmobj);
pdf_updatestream(src, i, gen, buf);
fz_dropobj(stmobj);
}
}
}
}
void showobject(int num, int gen)
{
fz_error *error;
fz_obj *obj;
if (!src)
die(fz_throw("no file specified"));
error = pdf_loadobject(&obj, src, num, gen);
if (error)
die(error);
/* print the stream raw if we're binary */
if (pdf_isstream(src, num, gen) && showbinary)
{
showstream(num, gen);
}
else
{
printf("%d %d obj\n", num, gen);
fz_debugobj(obj);
printf("\n");
if (pdf_isstream(src, num, gen))
{
printf("stream\n");
showstream(num, gen);
printf("endstream\n");
}
printf("endobj\n\n");
}
fz_dropobj(obj);
}
int
copyPdfFile(
soPdfFile* inFile,
soPdfFile* outFile
)
{
fz_error *error;
int pageTreeNum, pageTreeGen;
assert(inFile != NULL);
assert(outFile != NULL);
//
// Process every page in the source file
//
{
printf("\nProcessing input page : ");
for (int pageNo = 0; pageNo < pdf_getpagecount(inFile->pageTree); pageNo++)
{
displayPageNumber(pageNo + 1, !pageNo);
// Get the page object from the source
fz_obj *pageRef = inFile->pageTree->pref[pageNo];
fz_obj *pageObj = pdf_getpageobject(inFile->pageTree, pageNo);
//
// Process the page. Each page can be split into up-to 3 pages
//
fz_rect bbRect[3];
error = processPage(inFile, pageNo, bbRect, 3);
if (error)
return soPdfError(error);
for (int ctr = 0; ctr < 3; ctr++)
{
// Check if this was a blank page
if (fz_isemptyrect(bbRect[ctr]))
break;
//
// copy the source page dictionary entry. The way this is done is basically
// by making a copy of the page dict object in the source file, and adding
// the copy in the source file. Then the copied page dict object is
// referenced and added to the destination file.
//
// This convoluted procedure is done because the copy is done by pdf_transplant
// function that accepts a source and destination. Whatever is referenced by
// destination object is deep copied
//
// allocate an object id and generation id in source file
//
// There is a bug in mupdf where the object allocation returns
// 0 oid and 0 gid when the input pdf file has iref stream
// so to work around the issue, we wrap the pdf_allocojbect
// in a for loop 10 times to get the number
//
int sNum, sGen, tries;
for (tries = 0; tries < 10; tries++)
{
error = pdf_allocobject(inFile->xref, &sNum, &sGen);
if (error)
return soPdfError(error);
// If sNum is non zero then the allocation was successful
if (sNum != 0)
break;
pdf_updateobject(inFile->xref, sNum, sGen, pageObj);
}
// If we didn't succeed even after 10 tries then this file
// is not going to work.
if (tries >= 10)
return soPdfError(fz_throw("cannot allocate object because of mupdf bug"));
// make a deep copy of the original page dict
fz_obj *pageObj2;
error = fz_deepcopydict(&pageObj2, pageObj);
if (error)
return soPdfError(error);
// update the source file with the duplicate page object
pdf_updateobject(inFile->xref, sNum, sGen, pageObj2);
fz_dropobj(pageObj2);
// create an indirect reference to the page object
fz_obj *pageRef2;
error = fz_newindirect(&pageRef2, sNum, sGen);
if (error)
return soPdfError(error);
// delete the parent dictionary entry
// Do we need to delete any other dictionary entry
// like annot, tabs, metadata, etc
fz_dictdels(pageObj2, "Parent");
// Set the media box
setPageMediaBox(inFile->xref, pageObj2, bbRect[ctr]);
// Set the rotation based on input
switch(p_mode)
{
// no rotation if fit height
case FitHeight:
case Fit2xHeight:
break;
// rotate -90 deg if fit width
case Fit2xWidth:
case FitWidth:
setPageRotate(pageObj2, p_reverseLandscape ? 90 : -90);
break;
case SmartFitHeight:
case SmartFitWidth:
default:
return soPdfError(fz_throw("Mode(%d) not yet implemented.", p_mode));
break;
}
// push the indirect reference to the destination list for copy by pdf_transplant
error = fz_arraypush(outFile->editobjs, pageRef2);
if (error)
return soPdfError(error);
}
}
}
// flush the objects into destination from source
{
fz_obj *results;
int outPages;
printf("\nCopying output page : ");
error = pdf_transplant(outFile->xref, inFile->xref, &results, outFile->editobjs);
if (error)
return soPdfError(error);
outPages = fz_arraylen(results);
for (int ctr = 0; ctr < outPages; ctr++)
{
displayPageNumber(ctr + 1, !ctr);
error = fz_arraypush(outFile->pagelist, fz_arrayget(results,
p_reverseLandscape ? outPages - 1 - ctr : ctr));
if (error)
return soPdfError(error);
}
fz_dropobj(results);
}
// flush page tree
// Create page tree and add back-links
{
fz_obj *pageTreeObj;
fz_obj *pageTreeRef;
// allocate a new object in out file for pageTree object
error = pdf_allocobject(outFile->xref, &pageTreeNum, &pageTreeGen);
if (error)
return soPdfError(error);
// Create a page tree object
error = fz_packobj(&pageTreeObj, "<</Type/Pages/Count %i/Kids %o>>",
fz_arraylen(outFile->pagelist), outFile->pagelist);
if (error)
return soPdfError(error);
// Update the xref entry with the pageTree object
pdf_updateobject(outFile->xref, pageTreeNum, pageTreeGen, pageTreeObj);
fz_dropobj(pageTreeObj);
// Create a reference to the pageTree object
error = fz_newindirect(&pageTreeRef, pageTreeNum, pageTreeGen);
if (error)
return soPdfError(error);
//
// For every page in the output file, update the parent entry
//
for (int ctr = 0; ctr < fz_arraylen(outFile->pagelist); ctr++)
{
fz_obj *pageObj;
int num = fz_tonum(fz_arrayget(outFile->pagelist, ctr));
int gen = fz_togen(fz_arrayget(outFile->pagelist, ctr));
// Get the page object from xreft
error = pdf_loadobject(&pageObj, outFile->xref, num, gen);
if (error)
return soPdfError(error);
// Update the parent entry in the page dictionary
error = fz_dictputs(pageObj, "Parent", pageTreeRef);
if (error)
return soPdfError(error);
// Update the entry with the updated page object
pdf_updateobject(outFile->xref, num, gen, pageObj);
fz_dropobj(pageObj);
}
}
// Create catalog and root entries
{
fz_obj *catObj, *infoObj;
int rootNum, rootGen;
int infoNum, infoGen;
//
// Copy the info catalog to the destination
// alloc an object id and gen id in destination file
error = pdf_allocobject(outFile->xref, &infoNum, &infoGen);
if (error)
return soPdfError(error);
// make a deep copy of the original page dict
error = fz_deepcopydict(&infoObj, inFile->xref->info);
if (error)
return soPdfError(error);
// update the dest file with object
pdf_updateobject(outFile->xref, infoNum, infoGen, infoObj);
outFile->xref->info = infoObj;
fz_dropobj(infoObj);
//
// root/catalog object creation
error = pdf_allocobject(outFile->xref, &rootNum, &rootGen);
if (error)
return soPdfError(error);
error = fz_packobj(&catObj, "<</Type/Catalog /Pages %r>>", pageTreeNum, pageTreeGen);
if (error)
return soPdfError(error);
pdf_updateobject(outFile->xref, rootNum, rootGen, catObj);
fz_dropobj(catObj);
// Create trailer
error = fz_packobj(&outFile->xref->trailer, "<</Root %r /Info %r>>",
rootNum, rootGen, infoNum, infoGen);
if (error)
return soPdfError(error);
}
// Update the info in the target file and save the xref
printf("\nSaving.\n");
error = setPageInfo(inFile, outFile);
if (error)
return soPdfError(error);
error = pdf_savexref(outFile->xref, outFile->fileName, NULL);
if (error)
return soPdfError(error);
if (g_errorCount != 0)
{
printf("\nFollowing issues encounted were ignored.\n\n");
for (int ctr = g_errorCount - 1; ctr >= 0; ctr--)
soPdfError(g_errorList[ctr]);
}
printf("\nSaved.\n");
return 0;
}
static fz_error
pdf_loadobjstm(pdf_xref *xref, int num, int gen, char *buf, int cap)
{
fz_error error;
fz_stream *stm;
fz_obj *objstm;
int *numbuf;
int *ofsbuf;
fz_obj *obj;
int first;
int count;
int i, n;
pdf_token_e tok;
pdf_logxref("loadobjstm (%d %d R)\n", num, gen);
error = pdf_loadobject(&objstm, xref, num, gen);
if (error)
return fz_rethrow(error, "cannot load object stream object (%d %d R)", num, gen);
count = fz_toint(fz_dictgets(objstm, "N"));
first = fz_toint(fz_dictgets(objstm, "First"));
pdf_logxref("\tcount %d\n", count);
numbuf = fz_malloc(count * sizeof(int));
ofsbuf = fz_malloc(count * sizeof(int));
error = pdf_openstream(&stm, xref, num, gen);
if (error)
{
error = fz_rethrow(error, "cannot open object stream (%d %d R)", num, gen);
goto cleanupbuf;
}
for (i = 0; i < count; i++)
{
error = pdf_lex(&tok, stm, buf, cap, &n);
if (error || tok != PDF_TINT)
{
error = fz_rethrow(error, "corrupt object stream (%d %d R)", num, gen);
goto cleanupstm;
}
numbuf[i] = atoi(buf);
error = pdf_lex(&tok, stm, buf, cap, &n);
if (error || tok != PDF_TINT)
{
error = fz_rethrow(error, "corrupt object stream (%d %d R)", num, gen);
goto cleanupstm;
}
ofsbuf[i] = atoi(buf);
}
fz_seek(stm, first, 0);
for (i = 0; i < count; i++)
{
fz_seek(stm, first + ofsbuf[i], 0);
error = pdf_parsestmobj(&obj, xref, stm, buf, cap);
if (error)
{
error = fz_rethrow(error, "cannot parse object %d in stream (%d %d R)", i, num, gen);
goto cleanupstm;
}
if (numbuf[i] < 1 || numbuf[i] >= xref->len)
{
fz_dropobj(obj);
error = fz_throw("object id (%d 0 R) out of range (0..%d)", numbuf[i], xref->len - 1);
goto cleanupstm;
}
if (xref->table[numbuf[i]].type == 'o' && xref->table[numbuf[i]].ofs == num)
{
if (xref->table[numbuf[i]].obj)
fz_dropobj(xref->table[numbuf[i]].obj);
xref->table[numbuf[i]].obj = obj;
}
else
{
fz_dropobj(obj);
}
}
fz_close(stm);
fz_free(ofsbuf);
fz_free(numbuf);
fz_dropobj(objstm);
return fz_okay;
cleanupstm:
fz_close(stm);
cleanupbuf:
fz_free(ofsbuf);
fz_free(numbuf);
fz_dropobj(objstm);
return error; /* already rethrown */
}
void
editflushcatalog(void)
{
fz_error *error;
int rootnum, rootgen;
int listnum, listgen;
fz_obj *listref;
fz_obj *obj;
int i;
/* Create page tree and add back-links */
error = pdf_allocobject(editxref, &listnum, &listgen);
if (error)
die(error);
error = fz_packobj(&obj, "<</Type/Pages/Count %i/Kids %o>>",
fz_arraylen(editpagelist),
editpagelist);
if (error)
die(error);
pdf_updateobject(editxref, listnum, listgen, obj);
fz_dropobj(obj);
error = fz_newindirect(&listref, listnum, listgen);
if (error)
die(error);
for (i = 0; i < fz_arraylen(editpagelist); i++)
{
int num = fz_tonum(fz_arrayget(editpagelist, i));
int gen = fz_togen(fz_arrayget(editpagelist, i));
error = pdf_loadobject(&obj, editxref, num, gen);
if (error)
die(error);
error = fz_dictputs(obj, "Parent", listref);
if (error)
die(error);
pdf_updateobject(editxref, num, gen, obj);
fz_dropobj(obj);
}
/* Create catalog */
error = pdf_allocobject(editxref, &rootnum, &rootgen);
if (error)
die(error);
error = fz_packobj(&obj, "<</Type/Catalog/Pages %r>>", listnum, listgen);
if (error)
die(error);
pdf_updateobject(editxref, rootnum, rootgen, obj);
fz_dropobj(obj);
/* Create trailer */
error = fz_packobj(&editxref->trailer, "<</Root %r>>", rootnum, rootgen);
if (error)
die(error);
}
fz_error
pdf_repairxref(pdf_xref *xref, char *buf, int bufsize)
{
fz_error error;
fz_obj *dict, *obj;
fz_obj *length;
fz_obj *encrypt = nil;
fz_obj *id = nil;
fz_obj *root = nil;
fz_obj *info = nil;
struct entry *list = nil;
int listlen;
int listcap;
int maxnum = 0;
int num = 0;
int gen = 0;
int tmpofs, numofs = 0, genofs = 0;
int stmlen, stmofs = 0;
int tok;
int next;
int i, n;
pdf_logxref("repairxref %p\n", xref);
fz_seek(xref->file, 0, 0);
listlen = 0;
listcap = 1024;
list = fz_calloc(listcap, sizeof(struct entry));
/* look for '%PDF' version marker within first kilobyte of file */
n = fz_read(xref->file, (unsigned char *)buf, MAX(bufsize, 1024));
if (n < 0)
{
error = fz_rethrow(n, "cannot read from file");
goto cleanup;
}
fz_seek(xref->file, 0, 0);
for (i = 0; i < n - 4; i++)
{
if (memcmp(buf + i, "%PDF", 4) == 0)
{
fz_seek(xref->file, i, 0);
break;
}
}
while (1)
{
tmpofs = fz_tell(xref->file);
if (tmpofs < 0)
{
error = fz_throw("cannot tell in file");
goto cleanup;
}
error = pdf_lex(&tok, xref->file, buf, bufsize, &n);
if (error)
{
fz_catch(error, "ignoring the rest of the file");
break;
}
if (tok == PDF_TINT)
{
numofs = genofs;
num = gen;
genofs = tmpofs;
gen = atoi(buf);
}
if (tok == PDF_TOBJ)
{
error = fz_repairobj(xref->file, buf, bufsize, &stmofs, &stmlen, &encrypt, &id);
if (error)
{
error = fz_rethrow(error, "cannot parse object (%d %d R)", num, gen);
goto cleanup;
}
pdf_logxref("found object: (%d %d R)\n", num, gen);
if (listlen + 1 == listcap)
{
listcap = (listcap * 3) / 2;
list = fz_realloc(list, listcap, sizeof(struct entry));
}
list[listlen].num = num;
list[listlen].gen = gen;
list[listlen].ofs = numofs;
list[listlen].stmofs = stmofs;
list[listlen].stmlen = stmlen;
listlen ++;
if (num > maxnum)
maxnum = num;
}
/* trailer dictionary */
if (tok == PDF_TODICT)
{
error = pdf_parsedict(&dict, xref, xref->file, buf, bufsize);
if (error)
{
error = fz_rethrow(error, "cannot parse object");
goto cleanup;
}
obj = fz_dictgets(dict, "Encrypt");
if (obj)
{
if (encrypt)
fz_dropobj(encrypt);
encrypt = fz_keepobj(obj);
}
obj = fz_dictgets(dict, "ID");
if (obj)
{
if (id)
fz_dropobj(id);
id = fz_keepobj(obj);
}
obj = fz_dictgets(dict, "Root");
if (obj)
{
if (root)
fz_dropobj(root);
root = fz_keepobj(obj);
}
obj = fz_dictgets(dict, "Info");
if (obj)
{
if (info)
fz_dropobj(info);
info = fz_keepobj(obj);
}
fz_dropobj(dict);
}
if (tok == PDF_TERROR)
fz_readbyte(xref->file);
if (tok == PDF_TEOF)
break;
}
/* make xref reasonable */
pdf_resizexref(xref, maxnum + 1);
for (i = 0; i < listlen; i++)
{
xref->table[list[i].num].type = 'n';
xref->table[list[i].num].ofs = list[i].ofs;
xref->table[list[i].num].gen = list[i].gen;
xref->table[list[i].num].stmofs = list[i].stmofs;
/* corrected stream length */
if (list[i].stmlen >= 0)
{
pdf_logxref("correct stream length %d %d = %d\n",
list[i].num, list[i].gen, list[i].stmlen);
error = pdf_loadobject(&dict, xref, list[i].num, list[i].gen);
if (error)
{
error = fz_rethrow(error, "cannot load stream object (%d %d R)", list[i].num, list[i].gen);
goto cleanup;
}
length = fz_newint(list[i].stmlen);
fz_dictputs(dict, "Length", length);
fz_dropobj(length);
fz_dropobj(dict);
}
}
xref->table[0].type = 'f';
xref->table[0].ofs = 0;
xref->table[0].gen = 65535;
xref->table[0].stmofs = 0;
xref->table[0].obj = nil;
next = 0;
for (i = xref->len - 1; i >= 0; i--)
{
if (xref->table[i].type == 'f')
{
xref->table[i].ofs = next;
if (xref->table[i].gen < 65535)
xref->table[i].gen ++;
next = i;
}
}
/* create a repaired trailer, Root will be added later */
xref->trailer = fz_newdict(5);
obj = fz_newint(maxnum + 1);
fz_dictputs(xref->trailer, "Size", obj);
fz_dropobj(obj);
if (root)
{
fz_dictputs(xref->trailer, "Root", root);
fz_dropobj(root);
}
if (info)
{
fz_dictputs(xref->trailer, "Info", info);
fz_dropobj(info);
}
if (encrypt)
{
if (fz_isindirect(encrypt))
{
/* create new reference with non-nil xref pointer */
obj = fz_newindirect(fz_tonum(encrypt), fz_togen(encrypt), xref);
fz_dropobj(encrypt);
encrypt = obj;
}
fz_dictputs(xref->trailer, "Encrypt", encrypt);
fz_dropobj(encrypt);
}
if (id)
{
if (fz_isindirect(id))
{
/* create new reference with non-nil xref pointer */
obj = fz_newindirect(fz_tonum(id), fz_togen(id), xref);
fz_dropobj(id);
id = obj;
}
fz_dictputs(xref->trailer, "ID", id);
fz_dropobj(id);
}
fz_free(list);
return fz_okay;
cleanup:
if (encrypt) fz_dropobj(encrypt);
if (id) fz_dropobj(id);
if (root) fz_dropobj(root);
if (info) fz_dropobj(info);
fz_free(list);
return error; /* already rethrown */
}
fz_error
pdf_loadobjstm(pdf_xref *xref, int oid, int gen, char *buf, int cap)
{
fz_error error;
fz_stream *stm;
fz_obj *objstm;
int *oidbuf;
int *ofsbuf;
fz_obj *obj;
int first;
int count;
int i, n;
pdf_token_e tok;
pdf_logxref("loadobjstm (%d %d R)\n", oid, gen);
error = pdf_loadobject(&objstm, xref, oid, gen);
if (error)
return fz_rethrow(error, "cannot load object stream object");
count = fz_toint(fz_dictgets(objstm, "N"));
first = fz_toint(fz_dictgets(objstm, "First"));
pdf_logxref(" count %d\n", count);
oidbuf = fz_malloc(count * sizeof(int));
if (!oidbuf)
{
error = fz_rethrow(-1, "out of memory: object id buffer");
goto cleanupobj;
}
ofsbuf = fz_malloc(count * sizeof(int));
if (!ofsbuf)
{
error = fz_rethrow(-1, "out of memory: offset buffer");
goto cleanupoid;
}
error = pdf_openstream(&stm, xref, oid, gen);
if (error)
{
error = fz_rethrow(error, "cannot open object stream");
goto cleanupofs;
}
for (i = 0; i < count; i++)
{
error = pdf_lex(&tok, stm, buf, cap, &n);
if (error || tok != PDF_TINT)
{
error = fz_rethrow(error, "corrupt object stream");
goto cleanupstm;
}
oidbuf[i] = atoi(buf);
error = pdf_lex(&tok, stm, buf, cap, &n);
if (error || tok != PDF_TINT)
{
error = fz_rethrow(error, "corrupt object stream");
goto cleanupstm;
}
ofsbuf[i] = atoi(buf);
}
error = fz_seek(stm, first, 0);
if (error)
{
error = fz_rethrow(error, "cannot seek in object stream");
goto cleanupstm;
}
for (i = 0; i < count; i++)
{
/* FIXME: seek to first + ofsbuf[i] */
error = pdf_parsestmobj(&obj, xref, stm, buf, cap);
if (error)
{
error = fz_rethrow(error, "cannot parse object %d in stream", i);
goto cleanupstm;
}
if (oidbuf[i] < 1 || oidbuf[i] >= xref->len)
{
fz_dropobj(obj);
error = fz_throw("object id (%d 0 R) out of range (0..%d)", oidbuf[i], xref->len - 1);
goto cleanupstm;
}
if (xref->table[oidbuf[i]].obj)
fz_dropobj(xref->table[oidbuf[i]].obj);
xref->table[oidbuf[i]].obj = obj;
}
fz_dropstream(stm);
fz_free(ofsbuf);
fz_free(oidbuf);
fz_dropobj(objstm);
return fz_okay;
cleanupstm:
fz_dropstream(stm);
cleanupofs:
fz_free(ofsbuf);
cleanupoid:
fz_free(oidbuf);
cleanupobj:
fz_dropobj(objstm);
return error; /* already rethrown */
}
