diff options
Diffstat (limited to 'ruby_1_9_3/enc/trans/utf8_mac.trans')
| -rw-r--r-- | ruby_1_9_3/enc/trans/utf8_mac.trans | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/ruby_1_9_3/enc/trans/utf8_mac.trans b/ruby_1_9_3/enc/trans/utf8_mac.trans new file mode 100644 index 0000000000..8ea0afd73f --- /dev/null +++ b/ruby_1_9_3/enc/trans/utf8_mac.trans @@ -0,0 +1,242 @@ +#include "transcode_data.h" + +<% + require 'utf8_mac-tbl' + + transcode_tblgen("UTF-8", "UTF8-MAC", + MAC_DECOMPOSE_TBL + [ + ["{00-7F}", :nomap], + ["{c2-df}{80-bf}", :nomap0], + ["e0{a0-bf}{80-bf}", :nomap0], + ["{e1-ec}{80-bf}{80-bf}", :nomap0], + ["ed{80-9f}{80-bf}", :nomap0], + ["{ee-ef}{80-bf}{80-bf}", :nomap0], + ["f0{90-bf}{80-bf}{80-bf}", :nomap0], + ["{f1-f3}{80-bf}{80-bf}{80-bf}", :nomap0], + ]) + + map = {} + map["{00-7f}"] = :func_so + map["{c2-df}{80-bf}"] = :func_so + map["e0{a0-bf}{80-bf}"] = :func_so + map["{e1-ec}{80-bf}{80-bf}"] = :func_so + map["ed{80-9f}{80-bf}"] = :func_so + map["{ee-ef}{80-bf}{80-bf}"] = :func_so + map["f0{90-bf}{80-bf}{80-bf}"] = :func_so + map["{f1-f3}{80-bf}{80-bf}{80-bf}"] = :func_so + map["f4{80-8f}{80-bf}{80-bf}"] = :func_so + transcode_generate_node(ActionMap.parse(map), "from_UTF8_MAC") + + ary = MAC_DECOMPOSE_TBL.select{|k,v|v.scan(/[0-7C-F].(?:[89AB].)*/i).length == 3} + transcode_generate_node(ActionMap.parse(ary.map{|k,v|[v,k]}), "from_utf8_mac_nfc3") + + ary = MAC_DECOMPOSE_TBL.select{|k,v|v.scan(/[0-7C-F].(?:[89AB].)*/i).length == 2} + transcode_generate_node(ActionMap.parse(ary.map{|k,v|[v,k]}), "from_utf8_mac_nfc2") +%> + +<%= transcode_generated_code %> + +#define BYTE_ADDR(index) (<%= OUTPUT_PREFIX %>byte_array + (index)) +#define WORD_ADDR(index) (<%= OUTPUT_PREFIX %>word_array + INFO2WORDINDEX(index)) +#define BL_BASE BYTE_ADDR(BYTE_LOOKUP_BASE(WORD_ADDR(next_info))) +#define BL_INFO WORD_ADDR(BYTE_LOOKUP_INFO(WORD_ADDR(next_info))) +#define BL_MIN_BYTE (BL_BASE[0]) +#define BL_MAX_BYTE (BL_BASE[1]) +#define BL_OFFSET(byte) (BL_BASE[2+(byte)-BL_MIN_BYTE]) +#define BL_ACTION(byte) (BL_INFO[BL_OFFSET((byte))]) + +#define STATUS_BUF_SIZE 16 +struct from_utf8_mac_status { + unsigned char buf[STATUS_BUF_SIZE]; + int beg; + int end; + int len; +}; +#define buf_length(sp) ((sp)->len) + +int +buf_bytesize(struct from_utf8_mac_status *sp) +{ + int size = sp->end - sp->beg + STATUS_BUF_SIZE; + size %= STATUS_BUF_SIZE; + return size; +} + +void +buf_push(struct from_utf8_mac_status *sp, const unsigned char *p, ssize_t l) +{ + const unsigned char *pend = p + l; + while (p < pend) { + sp->buf[sp->end++] = *p++; + sp->end %= STATUS_BUF_SIZE; + } + sp->len++; +} + +unsigned char +buf_shift(struct from_utf8_mac_status *sp) +{ + unsigned char c = sp->buf[sp->beg++]; + sp->beg %= STATUS_BUF_SIZE; + if ((c & 0xC0) != 0x80) sp->len--; + return c; +} + +void +buf_shift_char(struct from_utf8_mac_status *sp) +{ + if (sp->beg == sp->end) return; + do { + buf_shift(sp); + } while (sp->beg != sp->end && (sp->buf[sp->beg] & 0xC0) == 0x80); +} + +void +buf_clear(struct from_utf8_mac_status *sp) +{ + sp->beg = sp->end = sp->len = 0; +} + +unsigned char +buf_at(struct from_utf8_mac_status *sp, int pos) +{ + pos += sp->beg; + pos %= STATUS_BUF_SIZE; + return sp->buf[pos]; +} + +int +buf_output_char(struct from_utf8_mac_status *sp, unsigned char *o) +{ + int n = 0; + while (sp->beg != sp->end) { + o[n++] = buf_shift(sp); + if ((sp->buf[sp->beg] & 0xC0) != 0x80) break; + } + return n; +} + +int +buf_output_all(struct from_utf8_mac_status *sp, unsigned char *o) +{ + int n = 0; + while (sp->beg != sp->end) { + o[n++] = buf_shift(sp); + } + return n; +} + +VALUE +get_info(VALUE next_info, struct from_utf8_mac_status *sp) { + int pos = 0; + while (pos < buf_bytesize(sp)) { + unsigned char next_byte = buf_at(sp, pos++); + if (next_byte < BL_MIN_BYTE || BL_MAX_BYTE < next_byte) + next_info = INVALID; + else { + next_info = (VALUE)BL_ACTION(next_byte); + } + if ((next_info & 3) == 0) continue; + break; + } + return next_info; +} + +int +buf_apply(int mode, struct from_utf8_mac_status *sp, unsigned char *o) +{ + int n = 0; + VALUE next_info = mode == 3 ? from_utf8_mac_nfc3 : from_utf8_mac_nfc2; + next_info = get_info(next_info, sp); + switch (next_info & 0x1F) { + case THREEbt: + case TWObt: + o[n++] = getBT1(next_info); + o[n++] = getBT2(next_info); + if (THREEbt == (next_info & 0x1F)) o[n++] = getBT3(next_info); + if (mode == 3) { + buf_clear(sp); + } + else { + buf_shift_char(sp); + buf_shift_char(sp); + } + break; + default: + return 0; + } + return n; +} + +static int +from_utf8_mac_init(void *statep) +{ + struct from_utf8_mac_status *sp = statep; + buf_clear(sp); + return 0; +} + +static ssize_t +from_utf8_mac_finish(void *statep, + unsigned char *o, size_t osize) +{ + struct from_utf8_mac_status *sp = statep; + int n; + if (buf_length(sp) == 0) return 0; + n = buf_apply(2, sp, o) + buf_output_all(sp, o); + return n; +} + +static ssize_t +fun_so_from_utf8_mac(void *statep, + const unsigned char *s, size_t l, + unsigned char *o, size_t osize) +{ + struct from_utf8_mac_status *sp = statep; + ssize_t n = 0; + + switch (l) { + case 1: + n = from_utf8_mac_finish(sp, o, osize); + break; + case 4: + n = from_utf8_mac_finish(sp, o, osize); + o[n++] = *s++; + o[n++] = *s++; + o[n++] = *s++; + o[n++] = *s++; + return n; + } + + buf_push(sp, s, l); + if (buf_length(sp) < 3) return n; + + n = buf_apply(3, sp, o); + if (n > 0) return n; + + n = buf_apply(2, sp, o); + if (n > 0) return n; + + return buf_output_char(sp, o); +} + +static const rb_transcoder +rb_from_UTF8_MAC = { + "UTF8-MAC", "UTF-8", from_UTF8_MAC, + TRANSCODE_TABLE_INFO, + 1, /* input_unit_length */ + 4, /* max_input */ + 10, /* max_output */ + asciicompat_encoder, /* asciicompat_type */ + sizeof(struct from_utf8_mac_status), from_utf8_mac_init, from_utf8_mac_init, + NULL, NULL, NULL, fun_so_from_utf8_mac, + from_utf8_mac_finish +}; + +void +Init_utf8_mac(void) +{ +<%= transcode_register_code %> + rb_register_transcoder(&rb_from_UTF8_MAC); +} + |