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Save work on low-level file I/O.

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Michael R Sweet
2021-04-26 10:42:01 -04:00
parent 253717248c
commit 11588ce2f5
6 changed files with 392 additions and 37 deletions
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22
pdfio.h
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@@ -49,17 +49,22 @@ extern "C" {
typedef struct _pdfio_array_s pdfio_array_t;
// Array of PDF values
typedef enum pdfio_compress_e // Types of compression to use when writing streams
{
PDFIO_COMPRESS_NONE, // No compression
PDFIO_COMPRESS_FLATE // Flate compression
} pdfio_compress_t;
typedef struct _pdfio_dict_s pdfio_dict_t;
// Key/value dictionary
typedef struct _pdfio_file_s pdfio_file_t;
// PDF file
typedef bool (*pdfio_error_cb_t)(pdfio_file_t *pdf, const char *message, void *data);
// Error callback
typedef enum pdfio_filter_e // Compression/decompression filters for streams
{
PDFIO_FILTER_NONE, // No filter
PDFIO_FILTER_FLATE // Flate filter
} pdfio_filter_t;
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_obj_s pdfio_obj_t;// Numbered object in PDF file
typedef struct pdfio_rect_s // PDF rectangle
{
@@ -138,19 +143,20 @@ extern unsigned pdfioFileGetNumObjects(pdfio_file_t *pdf) PDFIO_PUBLIC;
extern unsigned pdfioFileGetNumPages(pdfio_file_t *pdf) PDFIO_PUBLIC;
extern pdfio_obj_t *pdfioFileGetObject(pdfio_file_t *pdf, unsigned number) PDFIO_PUBLIC;
extern pdfio_obj_t *pdfioFileGetPage(pdfio_file_t *pdf, unsigned number) PDFIO_PUBLIC;
extern pdfio_file_t *pdfioFileOpen(const char *filename, const char *mode, pdfio_error_cb_t error_cb, void *error_data) PDFIO_PUBLIC;
extern pdfio_file_t *pdfioFileOpen(const char *filename, pdfio_mode_t mode, pdfio_error_cb_t error_cb, void *error_data) PDFIO_PUBLIC;
extern bool pdfioObjClose(pdfio_obj_t *obj) PDFIO_PUBLIC;
extern pdfio_stream_t *pdfioObjCreateStream(pdfio_obj_t *obj, pdfio_compress_t compression) PDFIO_PUBLIC;
extern pdfio_stream_t *pdfioObjCreateStream(pdfio_obj_t *obj, pdfio_filter_t compression) PDFIO_PUBLIC;
extern pdfio_dict_t *pdfioObjGetDict(pdfio_obj_t *obj) PDFIO_PUBLIC;
extern unsigned pdfioObjGetGeneration(pdfio_obj_t *obj) PDFIO_PUBLIC;
extern unsigned pdfioObjGetNumber(pdfio_obj_t *obj) PDFIO_PUBLIC;
extern pdfio_stream_t *pdfioObjGetStream(pdfio_obj_t *obj) PDFIO_PUBLIC;
extern const char *pdfioObjGetType(pdfio_obj_t *obj) PDFIO_PUBLIC;
extern pdfio_stream_t *pdfioObjOpenStream(pdfio_obj_t *obj) PDFIO_PUBLIC;
extern pdfio_obj_t *pdfioPageCopy(pdfio_file_t *pdf, pdfio_obj_t *src) PDFIO_PUBLIC;
extern bool pdfioStreamClose(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioStreamGetToken(pdfio_stream_t *st, char *buffer, size_t bufsize) PDFIO_PUBLIC;
extern bool pdfioStreamPrintf(pdfio_stream_t *st, const char *format, ...) PDFIO_PUBLIC PDFIO_FORMAT(2,3);
extern bool pdfioStreamPuts(pdfio_stream_t *st, const char *s) PDFIO_PUBLIC;
extern ssize_t pdfioStreamRead(pdfio_stream_t *st, void *buffer, size_t bytes) PDFIO_PUBLIC;