static fz_obj *
pdf_dict_from_string(pdf_xref *xref, char *string)
{
fz_context *ctx = xref->ctx;
fz_obj *result = NULL;
fz_stream *stream = fz_open_memory(ctx, string, strlen(string));
pdf_parse_stm_obj(&result, NULL, stream, xref->scratch, sizeof(xref->scratch));
fz_close(stream);
return result;
}
static fz_error
pdf_load_obj_stm(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;
int tok;
error = pdf_load_object(&objstm, xref, num, gen);
if (error)
return fz_rethrow(error, "cannot load object stream object (%d %d R)", num, gen);
count = fz_to_int(fz_dict_gets(objstm, "N"));
first = fz_to_int(fz_dict_gets(objstm, "First"));
numbuf = fz_calloc(count, sizeof(int));
ofsbuf = fz_calloc(count, sizeof(int));
error = pdf_open_stream(&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_TOK_INT)
{
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_TOK_INT)
{
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_parse_stm_obj(&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_drop_obj(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_drop_obj(xref->table[numbuf[i]].obj);
xref->table[numbuf[i]].obj = obj;
}
else
{
fz_drop_obj(obj);
}
}
fz_close(stm);
fz_free(ofsbuf);
fz_free(numbuf);
fz_drop_obj(objstm);
return fz_okay;
cleanupstm:
fz_close(stm);
cleanupbuf:
fz_free(ofsbuf);
fz_free(numbuf);
fz_drop_obj(objstm);
return error; /* already rethrown */
}
