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Michael R Sweet
2021-04-27 21:22:34 -04:00
parent 11588ce2f5
commit e2e2192ea9
10 changed files with 672 additions and 113 deletions
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88
pdfio-private.h
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@@ -56,10 +56,60 @@
// Types and constants...
//
typedef enum _pdfio_mode_e // Read/write mode
{
_PDFIO_MODE_READ, // Read a PDF file
_PDFIO_MODE_WRITE // Write a PDF file
} _pdfio_mode_t;
typedef struct _pdfio_value_s // Value structure
{
pdfio_valtype_t type; // Type of value
union
{
pdfio_array_t *array; // Array value
struct
{
unsigned char *data; // Data
size_t datalen; // Length
} binary; // Binary ("Hex String") data
bool boolean; // Boolean value
time_t date; // Date/time value
pdfio_dict_t *dict; // Dictionary value
pdfio_obj_t *obj; // Indirect object (N G obj) value
const char *name; // Name value
float number; // Number value
const char *string; // String value
} value; // Value union
} _pdfio_value_t;
struct _pdfio_array_s
{
pdfio_file_t *pdf; // PDF file
size_t num_values, // Number of values in use
alloc_values; // Number of allocated values
_pdfio_value_t *values; // Array of values
};
typedef struct _pdfio_pair_s // Key/value pair
{
const char *key; // Key string
_pdfio_value_t value; // Value
} _pdfio_pair_t;
struct _pdfio_dict_s
{
pdfio_file_t *pdf; // PDF file
size_t num_pairs, // Number of pairs in use
alloc_pairs; // Number of allocated pairs
_pdfio_pair_t *pairs; // Array of pairs
};
struct _pdfio_file_s // PDF file structure
{
const char *filename; // Filename
pdfio_mode_t mode; // Read/write mode
char *filename; // Filename
char *version; // Version number
_pdfio_mode_t mode; // Read/write mode
pdfio_error_cb_t error_cb; // Error callback
void *error_data; // Data for error callback
@@ -80,6 +130,9 @@ struct _pdfio_file_s // PDF file structure
size_t num_objs, // Number of objects
alloc_objs; // Allocated objects
pdfio_obj_t **objs; // Objects
size_t num_pages, // Number of pages
alloc_pages; // Allocated pages
pdfio_obj_t **pages; // Pages
size_t num_strings, // Number of strings
alloc_strings; // Allocated strings
char **strings; // Nul-terminated strings
@@ -88,10 +141,10 @@ struct _pdfio_file_s // PDF file structure
struct _pdfio_obj_s // Object
{
pdfio_file_t *pdf; // PDF file
int number, // Number
size_t number, // Number
generation; // Generation
off_t dict_offset, // Offset to dict in file
length_offset, // Offset to /Length in dict
off_t offset, // Offset to object in file
length_offset, // Offset to /Length in object dict
stream_offset; // Offset to start of stream in file
size_t stream_length; // Length of stream, if any
pdfio_dict_t *dict; // Dictionary
@@ -108,22 +161,6 @@ struct _pdfio_stream_s // Stream
z_stream flate; // Flate filter state
};
typedef struct _pdfio_value_s // Value structure
{
pdfio_valtype_t type; // Type of value
union
{
pdfio_array_t *array; // Array value
bool boolean; // Boolean value
time_t date; // Date/time value
pdfio_dict_t *dict; // Dictionary value
pdfio_obj_t *obj; // Indirect object (N G obj) value
const char *name; // Name value
float number; // Number value
const char *string; // String value
} value; // Value union
} _pdfio_value_t;
//
// Functions...
@@ -131,15 +168,19 @@ typedef struct _pdfio_value_s // Value structure
extern void _pdfioArrayDelete(pdfio_array_t *a) PDFIO_INTERNAL;
extern _pdfio_value_t *_pdfioArrayGetValue(pdfio_array_t *a, size_t n) PDFIO_INTERNAL;
extern bool _pdfioArrayWrite(pdfio_array_t *a) PDFIO_INTERNAL;
extern void _pdfioDictDelete(pdfio_dict_t *dict) PDFIO_INTERNAL;
extern _pdfio_value_t *_pdfioDictGetValue(pdfio_dict_t *dict, const char *key) PDFIO_INTERNAL;
extern bool _pdfioDictSetValue(pdfio_dict_t *dict, const char *key, _pdfio_value_t *value) PDFIO_INTERNAL;
extern bool _pdfioDictWrite(pdfio_dict_t *dict, off_t *length) PDFIO_INTERNAL;
extern bool _pdfioFileDefaultError(pdfio_file_t *pdf, const char *message, void *data) PDFIO_INTERNAL;
extern void _pdfioFileDelete(pdfio_file_t *pdf) PDFIO_INTERNAL;
extern bool _pdfioFileError(pdfio_file_t *pdf, const char *format, ...) PDFIO_FORMAT(2,3) PDFIO_INTERNAL;
extern bool _pdfioFileFlush(pdfio_file_t *pdf) PDFIO_INTERNAL;
extern int _pdfioFileGetChar(pdfio_file_t *pdf) PDFIO_INTERNAL;
extern bool _pdfioFilePrintf(pdfio_file_t *pdf, const char *format, ...) PDFIO_FORMAT(2,3) PDFIO_INTERNAL;
extern bool _pdfioFilePuts(pdfio_file_t *pdf, const char *s) PDFIO_INTERNAL;
extern ssize_t _pdfioFileRead(pdfio_file_t *pdf, char *buffer, size_t bytes) PDFIO_INTERNAL;
extern off_t _pdfioFileSeek(pdfio_file_t *pdf, off_t offset, int whence) PDFIO_INTERNAL;
extern off_t _pdfioFileTell(pdfio_file_t *pdf) PDFIO_INTERNAL;
@@ -151,7 +192,8 @@ extern void _pdfioStreamDelete(pdfio_stream_t *obj) PDFIO_INTERNAL;
extern bool _pdfioStringIsAllocated(pdfio_file_t *pdf, const char *s) PDFIO_INTERNAL;
extern _pdfio_value_t *_pdfioValueCopy(pdfio_file_t *pdfdst, _pdfio_value_t *vdst, pdfio_file_t *pdfsrc, _pdfio_value_t *vsrc) PDFIO_INTERNAL;
extern void _pdfioValueDelete(_pdfio_value_t *v) PDFIO_INTERNAL;
extern bool _pdfioValueWrite(pdfio_file_t *pdf, _pdfio_value_t *v) PDFIO_INTERNAL;
#endif // !PDFIO_PRIVATE_H