--- /dev/null
+/*\r
+ * _codecs_cn.c: Codecs collection for Mainland Chinese encodings\r
+ *\r
+ * Written by Hye-Shik Chang <perky@FreeBSD.org>\r
+ */\r
+\r
+#include "cjkcodecs.h"\r
+#include "mappings_cn.h"\r
+\r
+/**\r
+ * hz is predefined as 100 on AIX. So we undefine it to avoid\r
+ * conflict against hz codec's.\r
+ */\r
+#ifdef _AIX\r
+#undef hz\r
+#endif\r
+\r
+/* GBK and GB2312 map differently in few code points that are listed below:\r
+ *\r
+ * gb2312 gbk\r
+ * A1A4 U+30FB KATAKANA MIDDLE DOT U+00B7 MIDDLE DOT\r
+ * A1AA U+2015 HORIZONTAL BAR U+2014 EM DASH\r
+ * A844 undefined U+2015 HORIZONTAL BAR\r
+ */\r
+\r
+#define GBK_DECODE(dc1, dc2, assi) \\r
+ if ((dc1) == 0xa1 && (dc2) == 0xaa) (assi) = 0x2014; \\r
+ else if ((dc1) == 0xa8 && (dc2) == 0x44) (assi) = 0x2015; \\r
+ else if ((dc1) == 0xa1 && (dc2) == 0xa4) (assi) = 0x00b7; \\r
+ else TRYMAP_DEC(gb2312, assi, dc1 ^ 0x80, dc2 ^ 0x80); \\r
+ else TRYMAP_DEC(gbkext, assi, dc1, dc2);\r
+\r
+#define GBK_ENCODE(code, assi) \\r
+ if ((code) == 0x2014) (assi) = 0xa1aa; \\r
+ else if ((code) == 0x2015) (assi) = 0xa844; \\r
+ else if ((code) == 0x00b7) (assi) = 0xa1a4; \\r
+ else if ((code) != 0x30fb && TRYMAP_ENC_COND(gbcommon, assi, code));\r
+\r
+/*\r
+ * GB2312 codec\r
+ */\r
+\r
+ENCODER(gb2312)\r
+{\r
+ while (inleft > 0) {\r
+ Py_UNICODE c = IN1;\r
+ DBCHAR code;\r
+\r
+ if (c < 0x80) {\r
+ WRITE1((unsigned char)c)\r
+ NEXT(1, 1)\r
+ continue;\r
+ }\r
+ UCS4INVALID(c)\r
+\r
+ REQUIRE_OUTBUF(2)\r
+ TRYMAP_ENC(gbcommon, code, c);\r
+ else return 1;\r
+\r
+ if (code & 0x8000) /* MSB set: GBK */\r
+ return 1;\r
+\r
+ OUT1((code >> 8) | 0x80)\r
+ OUT2((code & 0xFF) | 0x80)\r
+ NEXT(1, 2)\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+DECODER(gb2312)\r
+{\r
+ while (inleft > 0) {\r
+ unsigned char c = **inbuf;\r
+\r
+ REQUIRE_OUTBUF(1)\r
+\r
+ if (c < 0x80) {\r
+ OUT1(c)\r
+ NEXT(1, 1)\r
+ continue;\r
+ }\r
+\r
+ REQUIRE_INBUF(2)\r
+ TRYMAP_DEC(gb2312, **outbuf, c ^ 0x80, IN2 ^ 0x80) {\r
+ NEXT(2, 1)\r
+ }\r
+ else return 2;\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+\r
+/*\r
+ * GBK codec\r
+ */\r
+\r
+ENCODER(gbk)\r
+{\r
+ while (inleft > 0) {\r
+ Py_UNICODE c = IN1;\r
+ DBCHAR code;\r
+\r
+ if (c < 0x80) {\r
+ WRITE1((unsigned char)c)\r
+ NEXT(1, 1)\r
+ continue;\r
+ }\r
+ UCS4INVALID(c)\r
+\r
+ REQUIRE_OUTBUF(2)\r
+\r
+ GBK_ENCODE(c, code)\r
+ else return 1;\r
+\r
+ OUT1((code >> 8) | 0x80)\r
+ if (code & 0x8000)\r
+ OUT2((code & 0xFF)) /* MSB set: GBK */\r
+ else\r
+ OUT2((code & 0xFF) | 0x80) /* MSB unset: GB2312 */\r
+ NEXT(1, 2)\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+DECODER(gbk)\r
+{\r
+ while (inleft > 0) {\r
+ unsigned char c = IN1;\r
+\r
+ REQUIRE_OUTBUF(1)\r
+\r
+ if (c < 0x80) {\r
+ OUT1(c)\r
+ NEXT(1, 1)\r
+ continue;\r
+ }\r
+\r
+ REQUIRE_INBUF(2)\r
+\r
+ GBK_DECODE(c, IN2, **outbuf)\r
+ else return 2;\r
+\r
+ NEXT(2, 1)\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+\r
+/*\r
+ * GB18030 codec\r
+ */\r
+\r
+ENCODER(gb18030)\r
+{\r
+ while (inleft > 0) {\r
+ ucs4_t c = IN1;\r
+ DBCHAR code;\r
+\r
+ if (c < 0x80) {\r
+ WRITE1(c)\r
+ NEXT(1, 1)\r
+ continue;\r
+ }\r
+\r
+ DECODE_SURROGATE(c)\r
+ if (c > 0x10FFFF)\r
+#if Py_UNICODE_SIZE == 2\r
+ return 2; /* surrogates pair */\r
+#else\r
+ return 1;\r
+#endif\r
+ else if (c >= 0x10000) {\r
+ ucs4_t tc = c - 0x10000;\r
+\r
+ REQUIRE_OUTBUF(4)\r
+\r
+ OUT4((unsigned char)(tc % 10) + 0x30)\r
+ tc /= 10;\r
+ OUT3((unsigned char)(tc % 126) + 0x81)\r
+ tc /= 126;\r
+ OUT2((unsigned char)(tc % 10) + 0x30)\r
+ tc /= 10;\r
+ OUT1((unsigned char)(tc + 0x90))\r
+\r
+#if Py_UNICODE_SIZE == 2\r
+ NEXT(2, 4) /* surrogates pair */\r
+#else\r
+ NEXT(1, 4)\r
+#endif\r
+ continue;\r
+ }\r
+\r
+ REQUIRE_OUTBUF(2)\r
+\r
+ GBK_ENCODE(c, code)\r
+ else TRYMAP_ENC(gb18030ext, code, c);\r
+ else {\r
+ const struct _gb18030_to_unibmp_ranges *utrrange;\r
+\r
+ REQUIRE_OUTBUF(4)\r
+\r
+ for (utrrange = gb18030_to_unibmp_ranges;\r
+ utrrange->first != 0;\r
+ utrrange++)\r
+ if (utrrange->first <= c &&\r
+ c <= utrrange->last) {\r
+ Py_UNICODE tc;\r
+\r
+ tc = c - utrrange->first +\r
+ utrrange->base;\r
+\r
+ OUT4((unsigned char)(tc % 10) + 0x30)\r
+ tc /= 10;\r
+ OUT3((unsigned char)(tc % 126) + 0x81)\r
+ tc /= 126;\r
+ OUT2((unsigned char)(tc % 10) + 0x30)\r
+ tc /= 10;\r
+ OUT1((unsigned char)tc + 0x81)\r
+\r
+ NEXT(1, 4)\r
+ break;\r
+ }\r
+\r
+ if (utrrange->first == 0)\r
+ return 1;\r
+ continue;\r
+ }\r
+\r
+ OUT1((code >> 8) | 0x80)\r
+ if (code & 0x8000)\r
+ OUT2((code & 0xFF)) /* MSB set: GBK or GB18030ext */\r
+ else\r
+ OUT2((code & 0xFF) | 0x80) /* MSB unset: GB2312 */\r
+\r
+ NEXT(1, 2)\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+DECODER(gb18030)\r
+{\r
+ while (inleft > 0) {\r
+ unsigned char c = IN1, c2;\r
+\r
+ REQUIRE_OUTBUF(1)\r
+\r
+ if (c < 0x80) {\r
+ OUT1(c)\r
+ NEXT(1, 1)\r
+ continue;\r
+ }\r
+\r
+ REQUIRE_INBUF(2)\r
+\r
+ c2 = IN2;\r
+ if (c2 >= 0x30 && c2 <= 0x39) { /* 4 bytes seq */\r
+ const struct _gb18030_to_unibmp_ranges *utr;\r
+ unsigned char c3, c4;\r
+ ucs4_t lseq;\r
+\r
+ REQUIRE_INBUF(4)\r
+ c3 = IN3;\r
+ c4 = IN4;\r
+ if (c < 0x81 || c3 < 0x81 || c4 < 0x30 || c4 > 0x39)\r
+ return 4;\r
+ c -= 0x81; c2 -= 0x30;\r
+ c3 -= 0x81; c4 -= 0x30;\r
+\r
+ if (c < 4) { /* U+0080 - U+FFFF */\r
+ lseq = ((ucs4_t)c * 10 + c2) * 1260 +\r
+ (ucs4_t)c3 * 10 + c4;\r
+ if (lseq < 39420) {\r
+ for (utr = gb18030_to_unibmp_ranges;\r
+ lseq >= (utr + 1)->base;\r
+ utr++) ;\r
+ OUT1(utr->first - utr->base + lseq)\r
+ NEXT(4, 1)\r
+ continue;\r
+ }\r
+ }\r
+ else if (c >= 15) { /* U+10000 - U+10FFFF */\r
+ lseq = 0x10000 + (((ucs4_t)c-15) * 10 + c2)\r
+ * 1260 + (ucs4_t)c3 * 10 + c4;\r
+ if (lseq <= 0x10FFFF) {\r
+ WRITEUCS4(lseq);\r
+ NEXT_IN(4)\r
+ continue;\r
+ }\r
+ }\r
+ return 4;\r
+ }\r
+\r
+ GBK_DECODE(c, c2, **outbuf)\r
+ else TRYMAP_DEC(gb18030ext, **outbuf, c, c2);\r
+ else return 2;\r
+\r
+ NEXT(2, 1)\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+\r
+/*\r
+ * HZ codec\r
+ */\r
+\r
+ENCODER_INIT(hz)\r
+{\r
+ state->i = 0;\r
+ return 0;\r
+}\r
+\r
+ENCODER_RESET(hz)\r
+{\r
+ if (state->i != 0) {\r
+ WRITE2('~', '}')\r
+ state->i = 0;\r
+ NEXT_OUT(2)\r
+ }\r
+ return 0;\r
+}\r
+\r
+ENCODER(hz)\r
+{\r
+ while (inleft > 0) {\r
+ Py_UNICODE c = IN1;\r
+ DBCHAR code;\r
+\r
+ if (c < 0x80) {\r
+ if (state->i == 0) {\r
+ WRITE1((unsigned char)c)\r
+ NEXT(1, 1)\r
+ }\r
+ else {\r
+ WRITE3('~', '}', (unsigned char)c)\r
+ NEXT(1, 3)\r
+ state->i = 0;\r
+ }\r
+ continue;\r
+ }\r
+\r
+ UCS4INVALID(c)\r
+\r
+ TRYMAP_ENC(gbcommon, code, c);\r
+ else return 1;\r
+\r
+ if (code & 0x8000) /* MSB set: GBK */\r
+ return 1;\r
+\r
+ if (state->i == 0) {\r
+ WRITE4('~', '{', code >> 8, code & 0xff)\r
+ NEXT(1, 4)\r
+ state->i = 1;\r
+ }\r
+ else {\r
+ WRITE2(code >> 8, code & 0xff)\r
+ NEXT(1, 2)\r
+ }\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+DECODER_INIT(hz)\r
+{\r
+ state->i = 0;\r
+ return 0;\r
+}\r
+\r
+DECODER_RESET(hz)\r
+{\r
+ state->i = 0;\r
+ return 0;\r
+}\r
+\r
+DECODER(hz)\r
+{\r
+ while (inleft > 0) {\r
+ unsigned char c = IN1;\r
+\r
+ if (c == '~') {\r
+ unsigned char c2 = IN2;\r
+\r
+ REQUIRE_INBUF(2)\r
+ if (c2 == '~') {\r
+ WRITE1('~')\r
+ NEXT(2, 1)\r
+ continue;\r
+ }\r
+ else if (c2 == '{' && state->i == 0)\r
+ state->i = 1; /* set GB */\r
+ else if (c2 == '}' && state->i == 1)\r
+ state->i = 0; /* set ASCII */\r
+ else if (c2 == '\n')\r
+ ; /* line-continuation */\r
+ else\r
+ return 2;\r
+ NEXT(2, 0);\r
+ continue;\r
+ }\r
+\r
+ if (c & 0x80)\r
+ return 1;\r
+\r
+ if (state->i == 0) { /* ASCII mode */\r
+ WRITE1(c)\r
+ NEXT(1, 1)\r
+ }\r
+ else { /* GB mode */\r
+ REQUIRE_INBUF(2)\r
+ REQUIRE_OUTBUF(1)\r
+ TRYMAP_DEC(gb2312, **outbuf, c, IN2) {\r
+ NEXT(2, 1)\r
+ }\r
+ else\r
+ return 2;\r
+ }\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+\r
+BEGIN_MAPPINGS_LIST\r
+ MAPPING_DECONLY(gb2312)\r
+ MAPPING_DECONLY(gbkext)\r
+ MAPPING_ENCONLY(gbcommon)\r
+ MAPPING_ENCDEC(gb18030ext)\r
+END_MAPPINGS_LIST\r
+\r
+BEGIN_CODECS_LIST\r
+ CODEC_STATELESS(gb2312)\r
+ CODEC_STATELESS(gbk)\r
+ CODEC_STATELESS(gb18030)\r
+ CODEC_STATEFUL(hz)\r
+END_CODECS_LIST\r
+\r
+I_AM_A_MODULE_FOR(cn)\r
projects / mirror_edk2.git / blobdiff