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Fix handling of 0-length streams (Issue #111)

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Michael R Sweet 2025-03-27 12:44:42 -04:00
parent 71d33c03ff
commit ebd5aab39b
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3 changed files with 4 additions and 2 deletions
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1
CHANGES.md
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@ -7,6 +7,7 @@ v1.5.1 - YYYY-MM-DD
- Fixed output of special characters in name values (Issue #106) - Fixed output of special characters in name values (Issue #106)
- Fixed output of special characters in string values (Issue #107) - Fixed output of special characters in string values (Issue #107)
- Fixed output of large integers in dictionaries (Issue #108) - Fixed output of large integers in dictionaries (Issue #108)
- Fixed handling of 0-length streams (Issue #111)
v1.5.0 - 2025-03-06 v1.5.0 - 2025-03-06

3
pdfio-object.c
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@ -307,7 +307,8 @@ pdfioObjGetLength(pdfio_obj_t *obj) // I - Object
if ((lenobj = pdfioDictGetObj(obj->value.value.dict, "Length")) == NULL) if ((lenobj = pdfioDictGetObj(obj->value.value.dict, "Length")) == NULL)
{ {
_pdfioFileError(obj->pdf, "Unable to get length of stream."); if (!_pdfioDictGetValue(obj->value.value.dict, "Length"))
_pdfioFileError(obj->pdf, "Unable to get length of stream.");
return (0); return (0);
} }

2
pdfio-stream.c
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@ -439,7 +439,7 @@ _pdfioStreamOpen(pdfio_obj_t *obj, // I - Object
st->pdf = obj->pdf; st->pdf = obj->pdf;
st->obj = obj; st->obj = obj;
if ((st->remaining = pdfioObjGetLength(obj)) == 0) if ((st->remaining = pdfioObjGetLength(obj)) == 0 && !_pdfioDictGetValue(pdfioObjGetDict(obj), "Length"))
{ {
_pdfioFileError(obj->pdf, "No stream data."); _pdfioFileError(obj->pdf, "No stream data.");
goto error; goto error;