/Modules/cjkcodecs/_codecs_tw.c

http://unladen-swallow.googlecode.com/ · C · 132 lines · 89 code · 32 blank · 11 comment · 14 complexity · 4af4c55abd2054e9d1eab2b03e9a1801 MD5 · raw file 

    

  1. /*
    2. 

  2.  * _codecs_tw.c: Codecs collection for Taiwan's encodings
    3. 

  3.  *
    4. 

  4.  * Written by Hye-Shik Chang <perky@FreeBSD.org>
    5. 

  5.  */
    6. 

  6. 

  7. #include "cjkcodecs.h"
    8. 

  8. #include "mappings_tw.h"
    9. 

  9. 

  10. /*
    11. 

  11.  * BIG5 codec
    12. 

  12.  */
    13. 

  13. 

  14. ENCODER(big5)
    15. 

  15. {
    16. 

  16. 	while (inleft > 0) {
    17. 

  17. 		Py_UNICODE c = **inbuf;
    18. 

  18. 		DBCHAR code;
    19. 

  19. 

  20. 		if (c < 0x80) {
    21. 

  21. 			REQUIRE_OUTBUF(1)
    22. 

  22. 			**outbuf = (unsigned char)c;
    23. 

  23. 			NEXT(1, 1)
    24. 

  24. 			continue;
    25. 

  25. 		}
    26. 

  26. 		UCS4INVALID(c)
    27. 

  27. 

  28. 		REQUIRE_OUTBUF(2)
    29. 

  29. 

  30. 		TRYMAP_ENC(big5, code, c);
    31. 

  31. 		else return 1;
    32. 

  32. 

  33. 		OUT1(code >> 8)
    34. 

  34. 		OUT2(code & 0xFF)
    35. 

  35. 		NEXT(1, 2)
    36. 

  36. 	}
    37. 

  37. 

  38. 	return 0;
    39. 

  39. }
    40. 

  40. 

  41. DECODER(big5)
    42. 

  42. {
    43. 

  43. 	while (inleft > 0) {
    44. 

  44. 		unsigned char c = IN1;
    45. 

  45. 

  46. 		REQUIRE_OUTBUF(1)
    47. 

  47. 

  48. 		if (c < 0x80) {
    49. 

  49. 			OUT1(c)
    50. 

  50. 			NEXT(1, 1)
    51. 

  51. 			continue;
    52. 

  52. 		}
    53. 

  53. 

  54. 		REQUIRE_INBUF(2)
    55. 

  55. 		TRYMAP_DEC(big5, **outbuf, c, IN2) {
    56. 

  56. 			NEXT(2, 1)
    57. 

  57. 		}
    58. 

  58. 		else return 2;
    59. 

  59. 	}
    60. 

  60. 

  61. 	return 0;
    62. 

  62. }
    63. 

  63. 

  64. 

  65. /*
    66. 

  66.  * CP950 codec
    67. 

  67.  */
    68. 

  68. 

  69. ENCODER(cp950)
    70. 

  70. {
    71. 

  71. 	while (inleft > 0) {
    72. 

  72. 		Py_UNICODE c = IN1;
    73. 

  73. 		DBCHAR code;
    74. 

  74. 

  75. 		if (c < 0x80) {
    76. 

  76. 			WRITE1((unsigned char)c)
    77. 

  77. 			NEXT(1, 1)
    78. 

  78. 			continue;
    79. 

  79. 		}
    80. 

  80. 		UCS4INVALID(c)
    81. 

  81. 

  82. 		REQUIRE_OUTBUF(2)
    83. 

  83. 		TRYMAP_ENC(cp950ext, code, c);
    84. 

  84. 		else TRYMAP_ENC(big5, code, c);
    85. 

  85. 		else return 1;
    86. 

  86. 

  87. 		OUT1(code >> 8)
    88. 

  88. 		OUT2(code & 0xFF)
    89. 

  89. 		NEXT(1, 2)
    90. 

  90. 	}
    91. 

  91. 

  92. 	return 0;
    93. 

  93. }
    94. 

  94. 

  95. DECODER(cp950)
    96. 

  96. {
    97. 

  97. 	while (inleft > 0) {
    98. 

  98. 		unsigned char c = IN1;
    99. 

  99. 

  100. 		REQUIRE_OUTBUF(1)
    101. 

  101. 

  102. 		if (c < 0x80) {
    103. 

  103. 			OUT1(c)
    104. 

  104. 			NEXT(1, 1)
    105. 

  105. 			continue;
    106. 

  106. 		}
    107. 

  107. 

  108. 		REQUIRE_INBUF(2)
    109. 

  109. 

  110. 		TRYMAP_DEC(cp950ext, **outbuf, c, IN2);
    111. 

  111. 		else TRYMAP_DEC(big5, **outbuf, c, IN2);
    112. 

  112. 		else return 2;
    113. 

  113. 

  114. 		NEXT(2, 1)
    115. 

  115. 	}
    116. 

  116. 

  117. 	return 0;
    118. 

  118. }
    119. 

  119. 

  120. 

  121. 

  122. BEGIN_MAPPINGS_LIST
    123. 

  123.   MAPPING_ENCDEC(big5)
    124. 

  124.   MAPPING_ENCDEC(cp950ext)
    125. 

  125. END_MAPPINGS_LIST
    126. 

  126. 

  127. BEGIN_CODECS_LIST
    128. 

  128.   CODEC_STATELESS(big5)
    129. 

  129.   CODEC_STATELESS(cp950)
    130. 

  130. END_CODECS_LIST
    131. 

  131. 

  132. I_AM_A_MODULE_FOR(tw)
    133.