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Implement pdfioObjCopy and pdfioPageCopy, with tests.

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This commit is contained in:
Michael R Sweet
2021-05-29 20:00:48 -04:00
parent 37842066c6
commit 35d22705fa
11 changed files with 244 additions and 68 deletions
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21
pdfio-dict.c
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@ -36,6 +36,8 @@ pdfioDictCopy(pdfio_file_t *pdf, // I - PDF file
_pdfio_value_t v; // Current destination value
PDFIO_DEBUG("pdfioDictCopy(pdf=%p, dict=%p(%p))\n", pdf, dict, dict ? dict->pdf : NULL);
// Create the new dictionary...
if ((ndict = pdfioDictCreate(pdf)) == NULL)
return (NULL);
@ -49,7 +51,24 @@ pdfioDictCopy(pdfio_file_t *pdf, // I - PDF file
// Copy and add each of the source dictionary's key/value pairs...
for (i = dict->num_pairs, p = dict->pairs; i > 0; i --, p ++)
{
if (!_pdfioValueCopy(pdf, &v, dict->pdf, &p->value))
if (!strcmp(p->key, "Length") && p->value.type == PDFIO_VALTYPE_INDIRECT && dict->pdf != pdf)
{
// Don't use indirect stream lengths for copied objects...
pdfio_obj_t *lenobj = pdfioFileFindObject(dict->pdf, p->value.value.indirect.number);
// Length object
v.type = PDFIO_VALTYPE_NUMBER;
if (lenobj)
{
if (lenobj->value.type == PDFIO_VALTYPE_NONE)
_pdfioObjLoad(lenobj);
v.value.number = lenobj->value.value.number;
}
else
v.value.number = 0.0f;
}
else if (!_pdfioValueCopy(pdf, &v, dict->pdf, &p->value))
return (NULL); // Let pdfioFileClose do the cleanup...
if (_pdfioStringIsAllocated(dict->pdf, p->key))