Rename backup_compression.{c,h} to compression.{c,h}

Compression option handling (level, algorithm or even workers) can be
used across several parts of the system and not only base backups.
Structures, objects and routines are renamed in consequence, to remove
the concept of base backups from this part of the code making this
change straight-forward.

pg_receivewal, that has gained support for LZ4 since babbbb5, will make
use of this infrastructure for its set of compression options, bringing
more consistency with pg_basebackup.  This cleanup needs to be done
before releasing a beta of 15.  pg_dump is a potential future target, as
well, and adding more compression options to it may happen in 16~.

Author: Michael Paquier
Reviewed-by: Robert Haas, Georgios Kokolatos
Discussion: https://postgr.es/m/YlPQGNAAa04raObK@paquier.xyz

1 files changed, 0 insertions, 46 deletions

diff --git a/src/include/common/backup_compression.h b/src/include/common/backup_compression.h
deleted file mode 100644
index 6a0ecaa99c9..00000000000
--- a/src/include/common/backup_compression.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * backup_compression.h
- *
- * Shared definitions for backup compression methods and specifications.
- *
- * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
- *
- * IDENTIFICATION
- *		  src/common/backup_compression.h
- *-------------------------------------------------------------------------
- */
-
-#ifndef BACKUP_COMPRESSION_H
-#define BACKUP_COMPRESSION_H
-
-typedef enum bc_algorithm
-{
-	BACKUP_COMPRESSION_NONE,
-	BACKUP_COMPRESSION_GZIP,
-	BACKUP_COMPRESSION_LZ4,
-	BACKUP_COMPRESSION_ZSTD
-} bc_algorithm;
-
-#define	BACKUP_COMPRESSION_OPTION_LEVEL			(1 << 0)
-#define BACKUP_COMPRESSION_OPTION_WORKERS		(1 << 1)
-
-typedef struct bc_specification
-{
-	bc_algorithm algorithm;
-	unsigned	options;		/* OR of BACKUP_COMPRESSION_OPTION constants */
-	int			level;
-	int			workers;
-	char	   *parse_error;	/* NULL if parsing was OK, else message */
-} bc_specification;
-
-extern bool parse_bc_algorithm(char *name, bc_algorithm *algorithm);
-extern const char *get_bc_algorithm_name(bc_algorithm algorithm);
-
-extern void parse_bc_specification(bc_algorithm algorithm,
-								   char *specification,
-								   bc_specification *result);
-
-extern char *validate_bc_specification(bc_specification *);
-
-#endif