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(struct coding_system): Add member common_flags, delete

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member require_flushing.
(CODING_REQUIRE_FLUSHING_MASK, CODING_REQUIRE_DECODING_MASK,
CODING_REQUIRE_ENCODING_MASK, CODING_REQUIRE_DETECTION_MASK): New
macros.
(CODING_REQUIRE_NO_CONVERSION, CODING_MAY_REQUIRE_NO_CONVERSION):
These macros deleted.
(CODING_REQUIRE_FLUSHING, CODING_REQUIRE_DECODING,
CODING_REQUIRE_ENCODING, CODING_REQUIRE_DETECTION): New macros.
This commit is contained in:
Kenichi Handa 1997-11-08 03:05:44 +00:00
parent 1a283a4c9e
commit a5ee738b63
1 changed files with 27 additions and 17 deletions
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44
src/coding.h
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@ -274,9 +274,9 @@ struct coding_system
/* Type of the coding system. */
enum coding_type type;
/* If the coding system requires specific code to be attached at the
tail of converted text, this value should be set to `1'. */
int require_flushing;
/* Flag bits of the coding system. The meaning of each bit is common
to any type of coding systems. */
unsigned int common_flags;
/* Flag bits of the coding system. The meaning of each bit depends
on the type of the coding system. */
@ -340,21 +340,31 @@ struct coding_system
int carryover_size;
};
/* Return 1 if coding system CODING never requires any code conversion. */
#define CODING_REQUIRE_NO_CONVERSION(coding) \
((coding)->type == coding_type_no_conversion \
|| (((coding)->type == coding_type_emacs_mule \
|| (coding)->type == coding_type_raw_text) \
&& (coding)->eol_type == CODING_EOL_LF))
#define CODING_REQUIRE_FLUSHING_MASK 1
#define CODING_REQUIRE_DECODING_MASK 2
#define CODING_REQUIRE_ENCODING_MASK 4
#define CODING_REQUIRE_DETECTION_MASK 8
/* Return 1 if the coding system CODING requires specific code to be
attached at the tail of converted text. */
#define CODING_REQUIRE_FLUSHING(coding) \
((coding)->common_flags & CODING_REQUIRE_FLUSHING_MASK)
/* Return 1 if the coding system CODING requires code conversion on
decoding. */
#define CODING_REQUIRE_DECODING(coding) \
((coding)->common_flags & CODING_REQUIRE_DECODING_MASK)
/* Return 1 if the coding system CODING requires code conversion on
encoding. */
#define CODING_REQUIRE_ENCODING(coding) \
((coding)->common_flags & CODING_REQUIRE_ENCODING_MASK)
/* Return 1 if the coding system CODING requires some kind of code
detection. */
#define CODING_REQUIRE_DETECTION(coding) \
((coding)->common_flags & CODING_REQUIRE_DETECTION_MASK)
/* Return 1 if coding system CODING may not require code conversion. */
#define CODING_MAY_REQUIRE_NO_CONVERSION(coding) \
((coding)->type == coding_type_no_conversion \
|| (((coding)->type == coding_type_emacs_mule \
|| (coding)->type == coding_type_undecided \
|| (coding)->type == coding_type_raw_text) \
&& ((coding)->eol_type == CODING_EOL_LF \
|| (coding)->eol_type == CODING_EOL_UNDECIDED)))
/* Index for each coding category in `coding_category_table' */
#define CODING_CATEGORY_IDX_EMACS_MULE 0