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Implement value/array/dict reading, refactor indirect references.

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Michael R Sweet
2021-05-04 10:34:17 -04:00
parent e6a6ed708a
commit a5468b1b87
5 changed files with 291 additions and 19 deletions
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52
pdfio-dict.c
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@ -244,7 +244,7 @@ pdfioDictGetObject(pdfio_dict_t *dict, // I - Dictionary
_pdfio_value_t *value = _pdfioDictGetValue(dict, key);
if (value && value->type == PDFIO_VALTYPE_INDIRECT)
return (value->value.obj);
return (pdfioFileGetObject(dict->pdf, value->value.indirect.number));
else
return (NULL);
}
@ -341,18 +341,41 @@ _pdfioDictGetValue(pdfio_dict_t *dict, // I - Dictionary
pdfio_dict_t * // O - New dictionary
_pdfioDictRead(pdfio_file_t *pdf) // I - PDF file
{
pdfio_dict_t *dict; // New dictionary
char token[8192], // Token buffer
key[256]; // Dictionary key
_pdfio_value_t value; // Dictionary value
pdfio_dict_t *dict; // New dictionary
char key[256]; // Dictionary key
_pdfio_value_t value; // Dictionary value
(void)pdf;
(void)dict;
(void)token;
(void)key;
(void)value;
// Create a dictionary and start reading...
dict = pdfioDictCreate(pdf);
while (_pdfioFileGetToken(pdf, key, sizeof(key)))
{
// Get the next key or end-of-dictionary...
if (!strcmp(key, ">>"))
{
// End of dictionary...
return (dict);
}
else if (key[0] != '/')
{
_pdfioFileError(pdf, "Invalid dictionary contents.");
break;
}
// Then get the next value...
if (!_pdfioValueRead(pdf, &value))
{
_pdfioFileError(pdf, "Missing value for dictionary key.");
break;
}
if (!_pdfioDictSetValue(dict, key, &value))
break;
}
// Dictionary is invalid - pdfioFileClose will free the memory, return NULL
// to indicate an error...
return (NULL);
}
@ -543,8 +566,8 @@ pdfioDictSetNumber(pdfio_dict_t *dict, // I - Dictionary
bool // O - `true` on success, `false` on failure
pdfioDictSetObject(pdfio_dict_t *dict, // I - Dictionary
const char *key, // I - Key
pdfio_obj_t *value) // I - Value
const char *key, // I - Key
pdfio_obj_t *value)// I - Value
{
_pdfio_value_t temp; // New value
@ -554,8 +577,9 @@ pdfioDictSetObject(pdfio_dict_t *dict, // I - Dictionary
return (false);
// Set the key/value pair...
temp.type = PDFIO_VALTYPE_INDIRECT;
temp.value.obj = value;
temp.type = PDFIO_VALTYPE_INDIRECT;
temp.value.indirect.number = value->number;
temp.value.indirect.generation = value->generation;
return (_pdfioDictSetValue(dict, key, &temp));
}