From 658cc2522eef712ab87432953aa385a62de1de63 Mon Sep 17 00:00:00 2001 From: Kenichi Handa Date: Thu, 22 Jan 1998 01:26:45 +0000 Subject: [PATCH] (CODING_FLAG_ISO_DESIGNATION): New macro. (struct iso2022_spec): New member. last_invalid_designation_register. (struct coding_system): New member inhibit_inconsistent_eol_type. (CODING_CATEGORY_IDX_ISO_7_TIGHT, CODING_CATEGORY_MASK_ISO_7_TIGHT): New macros. (CODING_CATEGORY_MASK_ANY): Include CODING_CATEGORY_MASK_ISO_7_TIGHT. (coding_category_table, coding_category_name): Extern deleted. (Vselect_safe_coding_system_function): Extern it. (CODING_FINISH_XXX): New macros. (CODING_MODE_XXX): New macros. (struct coding_system): New member mode, category_idx, heading_ascii. Deleted members last_block, direction, selective, carryover, carryover_size. (CODING_MAY_REQUIRE_DECODING): New macro. (CODING_CATEGORY_MASK_ISO_7BIT, CODING_CATEGORY_MASK_ISO_8BIT, CODING_CATEGORY_MASK_ISO_SHIFT, CODING_CATEGORY_MASK_ISO): New macros. (Qraw_text): Extern it. --- src/coding.h | 151 ++++++++++++++++++++++++++++++++++----------------- 1 file changed, 101 insertions(+), 50 deletions(-) diff --git a/src/coding.h b/src/coding.h index 9a7707bf07f..4669c459187 100644 --- a/src/coding.h +++ b/src/coding.h @@ -142,6 +142,9 @@ enum iso_code_class_type on input. */ #define CODING_FLAG_ISO_LATIN_EXTRA 0x1000 +/* If set, use designation escape sequence. */ +#define CODING_FLAG_ISO_DESIGNATION 0x10000 + /* A character to be produced on output if encoding of the original character is prohibited by CODING_FLAG_ISO_SAFE. */ #define CODING_INHIBIT_CHARACTER_SUBSTITUTION 077 /* 077 == `?' */ @@ -158,6 +161,10 @@ struct iso2022_spec /* A charset initially designated to each graphic register. */ int initial_designation[4]; + /* If not -1, it is a graphic register specified in an invalid + designation sequence. */ + int last_invalid_designation_register; + /* A graphic register to which each charset should be designated. */ unsigned char requested_designation[MAX_CHARSET + 1]; @@ -176,19 +183,19 @@ struct iso2022_spec /* Macros to access each field in the structure `spec.iso2022'. */ #define CODING_SPEC_ISO_INVOCATION(coding, plane) \ - coding->spec.iso2022.current_invocation[plane] + (coding)->spec.iso2022.current_invocation[plane] #define CODING_SPEC_ISO_DESIGNATION(coding, reg) \ - coding->spec.iso2022.current_designation[reg] + (coding)->spec.iso2022.current_designation[reg] #define CODING_SPEC_ISO_INITIAL_DESIGNATION(coding, reg) \ - coding->spec.iso2022.initial_designation[reg] + (coding)->spec.iso2022.initial_designation[reg] #define CODING_SPEC_ISO_REQUESTED_DESIGNATION(coding, charset) \ - coding->spec.iso2022.requested_designation[charset] + (coding)->spec.iso2022.requested_designation[charset] #define CODING_SPEC_ISO_REVISION_NUMBER(coding, charset) \ - coding->spec.iso2022.charset_revision_number[charset] + (coding)->spec.iso2022.charset_revision_number[charset] #define CODING_SPEC_ISO_SINGLE_SHIFTING(coding) \ - coding->spec.iso2022.single_shifting + (coding)->spec.iso2022.single_shifting #define CODING_SPEC_ISO_BOL(coding) \ - coding->spec.iso2022.bol + (coding)->spec.iso2022.bol /* A value which may appear in coding->spec.iso2022.requested_designation indicating that the @@ -269,45 +276,63 @@ enum coding_type /* 1 iff composing with embeded composition rule. */ #define COMPOSING_WITH_RULE_P(composing) ((composing) & 1) +/* Macros used for the member finish_status of the struct + coding_system. */ +#define CODING_FINISH_NORMAL 0 +#define CODING_FINISH_INSUFFICIENT_SRC 1 +#define CODING_FINISH_INSUFFICIENT_DST 2 +#define CODING_FINISH_INCONSISTENT_EOL 3 + +/* Macros used for the member mode of the struct coding_systme. */ + +/* If set, recover the original CR or LF of the already decoded text + when the decoding routine encounters an inconsistent eol format. */ +#define CODING_MODE_INHIBIT_INCONSISTENT_EOL 0x01 + +/* If set, the decoding/encoding routines treat the current data as + the last block of the whole text to be converted, and do + appropriate fisishing job. */ +#define CODING_MODE_LAST_BLOCK 0x02 + +/* If set, it means that the current source text is in a buffer which + enables selective display. */ +#define CODING_MODE_SELECTIVE_DISPLAY 0x04 + +/* This flag is used by the decoding/encoding routines on the fly. If + set, it means that right-to-left text is being processed. */ +#define CODING_MODE_DIRECTION 0x08 + struct coding_system { /* Type of the coding system. */ enum coding_type type; + /* Type of end-of-line format (LF, CRLF, or CR) of the coding system. */ + int eol_type; + /* Flag bits of the coding system. The meaning of each bit is common - to any type of coding systems. */ + to all types 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. */ unsigned int flags; - /* Type of end-of-line format (LF, CRLF, or CR) of the coding system. */ - int eol_type; + /* Mode bits of the coding system. See the comments of the macros + CODING_MODE_XXX. */ + unsigned int mode; /* Table of safe character sets for this coding system. If the Nth - element is 0, the charset of ID N is not an safe character set. + element is 0, the charset of ID N is not a safe character set. Such a character set is not encoded when CODING_ISO_FLAG_SAFE is set. */ unsigned char safe_charsets[MAX_CHARSET + 1]; - /* Non-zero means that the current source text is the last block of the - whole text to be converted. */ - int last_block; - /* Non-zero means that characters are being composed currently while decoding or encoding. See macros COMPOSING_XXXX above for the meaing of each non-zero value. */ int composing; - /* 0 (left-to-right) or 1 (right-to-left): the direction of the text - being processed currently. */ - int direction; - - /* Non-zero means that the current source text is in a buffer which - enables selective display. */ - int selective; - /* Detailed information specific to each type of coding system. */ union spec { @@ -315,29 +340,36 @@ struct coding_system struct ccl_spec ccl; /* Defined in ccl.h. */ } spec; + /* Index number of coding category of the coding system. */ + int category_idx; + + /* How may heading bytes we can skip for decoding. This member is + set by the function detect_coding. The initial value is -1 which + means detect_coding has not yet been called. */ + int heading_ascii; + + /* The following members are set by encoding/decoding routine. */ + int produced, produced_char, consumed, consumed_char; + + /* The following members are all Lisp symbols. We don't have to + protect them from GC because the current garbage collection + doesn't relocate Lisp symbols. But, when it is changed, we must + find a way to protect them. */ + /* Backward pointer to the Lisp symbol of the coding system. */ Lisp_Object symbol; /* Lisp function (symbol) to be called after decoding to do - additional conversion. */ + additional conversion, or nil. */ Lisp_Object post_read_conversion; /* Lisp function (symbol) to be called before encoding to do - additional conversion. */ + additional conversion, or nil. */ Lisp_Object pre_write_conversion; /* Character unification tables to look up, or nil. */ Lisp_Object character_unification_table_for_decode; Lisp_Object character_unification_table_for_encode; - - /* Carryover yielded by decoding/encoding incomplete source. No - coding-system yields more than 7-byte of carryover. This does - not include a text which is not processed because of short of - output buffer. */ - char carryover[8]; - - /* Actual data length in the above array. */ - int carryover_size; }; #define CODING_REQUIRE_FLUSHING_MASK 1 @@ -365,25 +397,30 @@ struct coding_system #define CODING_REQUIRE_DETECTION(coding) \ ((coding)->common_flags & CODING_REQUIRE_DETECTION_MASK) +#define CODING_MAY_REQUIRE_DECODING(coding) \ + ((coding)->common_flags \ + & (CODING_REQUIRE_DETECTION_MASK | CODING_REQUIRE_DECODING_MASK)) /* Index for each coding category in `coding_category_table' */ #define CODING_CATEGORY_IDX_EMACS_MULE 0 #define CODING_CATEGORY_IDX_SJIS 1 #define CODING_CATEGORY_IDX_ISO_7 2 -#define CODING_CATEGORY_IDX_ISO_8_1 3 -#define CODING_CATEGORY_IDX_ISO_8_2 4 -#define CODING_CATEGORY_IDX_ISO_7_ELSE 5 -#define CODING_CATEGORY_IDX_ISO_8_ELSE 6 -#define CODING_CATEGORY_IDX_BIG5 7 -#define CODING_CATEGORY_IDX_RAW_TEXT 8 -#define CODING_CATEGORY_IDX_BINARY 9 -#define CODING_CATEGORY_IDX_MAX 10 +#define CODING_CATEGORY_IDX_ISO_7_TIGHT 3 +#define CODING_CATEGORY_IDX_ISO_8_1 4 +#define CODING_CATEGORY_IDX_ISO_8_2 5 +#define CODING_CATEGORY_IDX_ISO_7_ELSE 6 +#define CODING_CATEGORY_IDX_ISO_8_ELSE 7 +#define CODING_CATEGORY_IDX_BIG5 8 +#define CODING_CATEGORY_IDX_RAW_TEXT 9 +#define CODING_CATEGORY_IDX_BINARY 10 +#define CODING_CATEGORY_IDX_MAX 11 /* Definitions of flag bits returned by the function detect_coding_mask (). */ #define CODING_CATEGORY_MASK_EMACS_MULE (1 << CODING_CATEGORY_IDX_EMACS_MULE) #define CODING_CATEGORY_MASK_SJIS (1 << CODING_CATEGORY_IDX_SJIS) #define CODING_CATEGORY_MASK_ISO_7 (1 << CODING_CATEGORY_IDX_ISO_7) +#define CODING_CATEGORY_MASK_ISO_7_TIGHT (1 << CODING_CATEGORY_IDX_ISO_7_TIGHT) #define CODING_CATEGORY_MASK_ISO_8_1 (1 << CODING_CATEGORY_IDX_ISO_8_1) #define CODING_CATEGORY_MASK_ISO_8_2 (1 << CODING_CATEGORY_IDX_ISO_8_2) #define CODING_CATEGORY_MASK_ISO_7_ELSE (1 << CODING_CATEGORY_IDX_ISO_7_ELSE) @@ -398,12 +435,27 @@ struct coding_system ( CODING_CATEGORY_MASK_EMACS_MULE \ | CODING_CATEGORY_MASK_SJIS \ | CODING_CATEGORY_MASK_ISO_7 \ + | CODING_CATEGORY_MASK_ISO_7_TIGHT \ | CODING_CATEGORY_MASK_ISO_8_1 \ | CODING_CATEGORY_MASK_ISO_8_2 \ | CODING_CATEGORY_MASK_ISO_7_ELSE \ | CODING_CATEGORY_MASK_ISO_8_ELSE \ | CODING_CATEGORY_MASK_BIG5) +#define CODING_CATEGORY_MASK_ISO_7BIT \ + (CODING_CATEGORY_MASK_ISO_7 | CODING_CATEGORY_MASK_ISO_7_TIGHT) + +#define CODING_CATEGORY_MASK_ISO_8BIT \ + (CODING_CATEGORY_MASK_ISO_8_1 | CODING_CATEGORY_MASK_ISO_8_2) + +#define CODING_CATEGORY_MASK_ISO_SHIFT \ + (CODING_CATEGORY_MASK_ISO_7_ELSE | CODING_CATEGORY_MASK_ISO_8_ELSE) + +#define CODING_CATEGORY_MASK_ISO \ + ( CODING_CATEGORY_MASK_ISO_7BIT \ + | CODING_CATEGORY_MASK_ISO_SHIFT \ + | CODING_CATEGORY_MASK_ISO_8BIT) + /* Macros to decode or encode a character of JISX0208 in SJIS. S1 and S2 are the 1st and 2nd position-codes of JISX0208 in SJIS coding system. C1 and C2 are the 1st and 2nd position codes of Emacs' @@ -431,9 +483,9 @@ struct coding_system /* Extern declarations. */ extern int decode_coding P_ ((struct coding_system *, unsigned char *, - unsigned char *, int, int, int *)); + unsigned char *, int, int)); extern int encode_coding P_ ((struct coding_system *, unsigned char *, - unsigned char *, int, int, int *)); + unsigned char *, int, int)); extern int decoding_buffer_size P_ ((struct coding_system *, int)); extern int encoding_buffer_size P_ ((struct coding_system *, int)); extern void detect_coding P_ ((struct coding_system *, unsigned char *, int)); @@ -443,7 +495,7 @@ extern char *conversion_buffer; extern char *get_conversion_buffer P_ ((int)); extern int setup_coding_system P_ ((Lisp_Object, struct coding_system *)); extern Lisp_Object Qcoding_system, Qeol_type, Qcoding_category_index; -extern Lisp_Object Qemacs_mule; +extern Lisp_Object Qraw_text; extern Lisp_Object Qbuffer_file_coding_system; extern Lisp_Object Vcoding_category_list; @@ -452,11 +504,6 @@ extern int eol_mnemonic_unix, eol_mnemonic_dos, eol_mnemonic_mac; /* Mnemonic character to indicate type of end-of-line is not yet decided. */ extern int eol_mnemonic_undecided; -/* Table of coding-systems currently assigned to each coding-category. */ -extern Lisp_Object coding_category_table[CODING_CATEGORY_IDX_MAX]; -/* Table of names of symbol for each coding-category. */ -extern char *coding_category_name[CODING_CATEGORY_IDX_MAX]; - #ifdef emacs extern Lisp_Object Qfile_coding_system; extern Lisp_Object Qcall_process, Qcall_process_region, Qprocess_argument; @@ -486,6 +533,10 @@ extern struct coding_system keyboard_coding; /* Default coding systems used for process I/O. */ extern Lisp_Object Vdefault_process_coding_system; +/* Function to call to force a user to force select a propert coding + system. */ +extern Lisp_Object Vselect_safe_coding_system_function; + #endif #endif /* _CODING_H */ -- 2.39.2