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Load trailer dict.

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This commit is contained in:
Michael R Sweet
2021-05-04 12:24:29 -04:00
parent a5468b1b87
commit 516c6b9ace
3 changed files with 66 additions and 6 deletions
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41
pdfio-file.c
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@@ -453,9 +453,10 @@ static bool // O - `true` on success, `false` on failure
load_xref(pdfio_file_t *pdf, // I - PDF file
off_t xref_offset) // I - Offset to xref
{
bool done = false; // Are we done?
char line[1024], // Line from file
*ptr; // Pointer into line
bool done = false; // Are we done?
char line[1024], // Line from file
*ptr; // Pointer into line
_pdfio_value_t trailer; // Trailer dictionary
while (!done)
@@ -496,7 +497,7 @@ load_xref(pdfio_file_t *pdf, // I - PDF file
// Read this group of objects...
for (; num_objects > 0; num_objects --, number ++)
{
intmax_t offset; // Offset in file
intmax_t offset; // Offset in file
int generation; // Generation number
pdfio_obj_t *obj; // Object
@@ -558,8 +559,36 @@ load_xref(pdfio_file_t *pdf, // I - PDF file
return (false);
}
// TODO: Read trailer dict...
done = true;
if (!_pdfioValueRead(pdf, &trailer))
{
_pdfioFileError(pdf, "Unable to read trailer dictionary.");
return (false);
}
else
{
_pdfioFileError(pdf, "Trailer is not a dictionary.");
return (false);
}
if (!pdf->trailer)
{
// Save the trailer dictionary and grab the root (catalog) and info
// objects...
pdf->trailer = trailer.value.dict;
if ((pdf->root = pdfioDictGetObject(pdf->trailer, "Root")) == NULL)
{
_pdfioFileError(pdf, "Missing Root object.");
return (false);
}
pdf->info = pdfioDictGetObject(pdf->trailer, "Info");
pdf->encrypt = pdfioDictGetObject(pdf->trailer, "Encrypt");
pdf->id_array = pdfioDictGetArray(pdf->trailer, "ID");
}
if ((xref_offset = (off_t)pdfioDictGetNumber(pdf->trailer, "Prev")) <= 0)
done = true;
}
return (true);