- const char *encoding = locale_charset ();
-
- if (STREQ (encoding, "UTF-8", 'U', 'T', 'F', '-', '8', 0, 0, 0, 0))
- {
- /* Cf. unistr/u8-mblen.c. */
- unsigned char c = (unsigned char) p[0];
-
- if (c >= 0xc2)
- {
- if (c < 0xe0)
- {
- if (m == 1)
- goto incomplete;
- }
- else if (c < 0xf0)
- {
- if (m == 1)
- goto incomplete;
- if (m == 2)
- {
- unsigned char c2 = (unsigned char) p[1];
-
- if ((c2 ^ 0x80) < 0x40
- && (c >= 0xe1 || c2 >= 0xa0)
- && (c != 0xed || c2 < 0xa0))
- goto incomplete;
- }
- }
- else if (c <= 0xf4)
- {
- if (m == 1)
- goto incomplete;
- else /* m == 2 || m == 3 */
- {
- unsigned char c2 = (unsigned char) p[1];
-
- if ((c2 ^ 0x80) < 0x40
- && (c >= 0xf1 || c2 >= 0x90)
- && (c < 0xf4 || (c == 0xf4 && c2 < 0x90)))
- {
- if (m == 2)
- goto incomplete;
- else /* m == 3 */
- {
- unsigned char c3 = (unsigned char) p[2];
-
- if ((c3 ^ 0x80) < 0x40)
- goto incomplete;
- }
- }
- }
- }
- }
- goto invalid;
- }
-
- /* As a reference for this code, you can use the GNU libiconv
- implementation. Look for uses of the RET_TOOFEW macro. */
-
- if (STREQ (encoding, "EUC-JP", 'E', 'U', 'C', '-', 'J', 'P', 0, 0, 0))
- {
- if (m == 1)
- {
- unsigned char c = (unsigned char) p[0];
-
- if ((c >= 0xa1 && c < 0xff) || c == 0x8e || c == 0x8f)
- goto incomplete;
- }
- if (m == 2)
- {
- unsigned char c = (unsigned char) p[0];
-
- if (c == 0x8f)
- {
- unsigned char c2 = (unsigned char) p[1];
-
- if (c2 >= 0xa1 && c2 < 0xff)
- goto incomplete;
- }
- }
- goto invalid;
- }
- if (STREQ (encoding, "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0)
- || STREQ (encoding, "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0)
- || STREQ (encoding, "BIG5", 'B', 'I', 'G', '5', 0, 0, 0, 0, 0))
- {
- if (m == 1)
- {
- unsigned char c = (unsigned char) p[0];
-
- if (c >= 0xa1 && c < 0xff)
- goto incomplete;
- }
- goto invalid;
- }
- if (STREQ (encoding, "EUC-TW", 'E', 'U', 'C', '-', 'T', 'W', 0, 0, 0))
- {
- if (m == 1)
- {
- unsigned char c = (unsigned char) p[0];
-
- if ((c >= 0xa1 && c < 0xff) || c == 0x8e)
- goto incomplete;
- }
- else /* m == 2 || m == 3 */
- {
- unsigned char c = (unsigned char) p[0];
-
- if (c == 0x8e)
- goto incomplete;
- }
- goto invalid;
- }
- if (STREQ (encoding, "GB18030", 'G', 'B', '1', '8', '0', '3', '0', 0, 0))
- {
- if (m == 1)
- {
- unsigned char c = (unsigned char) p[0];
-
- if ((c >= 0x90 && c <= 0xe3) || (c >= 0xf8 && c <= 0xfe))
- goto incomplete;
- }
- else /* m == 2 || m == 3 */
- {
- unsigned char c = (unsigned char) p[0];
-
- if (c >= 0x90 && c <= 0xe3)
- {
- unsigned char c2 = (unsigned char) p[1];
-
- if (c2 >= 0x30 && c2 <= 0x39)
- {
- if (m == 2)
- goto incomplete;
- else /* m == 3 */
- {
- unsigned char c3 = (unsigned char) p[2];
-
- if (c3 >= 0x81 && c3 <= 0xfe)
- goto incomplete;
- }
- }
- }
- }
- goto invalid;
- }
- if (STREQ (encoding, "SJIS", 'S', 'J', 'I', 'S', 0, 0, 0, 0, 0))
- {
- if (m == 1)
- {
- unsigned char c = (unsigned char) p[0];
-
- if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xea)
- || (c >= 0xf0 && c <= 0xf9))
- goto incomplete;
- }
- goto invalid;
- }
-
- /* An unknown multibyte encoding. */
- goto incomplete;
+ const char *encoding = locale_charset ();
+
+ if (STREQ_OPT (encoding, "UTF-8", 'U', 'T', 'F', '-', '8', 0, 0, 0, 0))
+ {
+ /* Cf. unistr/u8-mblen.c. */
+ unsigned char c = (unsigned char) p[0];
+
+ if (c >= 0xc2)
+ {
+ if (c < 0xe0)
+ {
+ if (m == 1)
+ goto incomplete;
+ }
+ else if (c < 0xf0)
+ {
+ if (m == 1)
+ goto incomplete;
+ if (m == 2)
+ {
+ unsigned char c2 = (unsigned char) p[1];
+
+ if ((c2 ^ 0x80) < 0x40
+ && (c >= 0xe1 || c2 >= 0xa0)
+ && (c != 0xed || c2 < 0xa0))
+ goto incomplete;
+ }
+ }
+ else if (c <= 0xf4)
+ {
+ if (m == 1)
+ goto incomplete;
+ else /* m == 2 || m == 3 */
+ {
+ unsigned char c2 = (unsigned char) p[1];
+
+ if ((c2 ^ 0x80) < 0x40
+ && (c >= 0xf1 || c2 >= 0x90)
+ && (c < 0xf4 || (c == 0xf4 && c2 < 0x90)))
+ {
+ if (m == 2)
+ goto incomplete;
+ else /* m == 3 */
+ {
+ unsigned char c3 = (unsigned char) p[2];
+
+ if ((c3 ^ 0x80) < 0x40)
+ goto incomplete;
+ }
+ }
+ }
+ }
+ }
+ goto invalid;
+ }
+
+ /* As a reference for this code, you can use the GNU libiconv
+ implementation. Look for uses of the RET_TOOFEW macro. */
+
+ if (STREQ_OPT (encoding,
+ "EUC-JP", 'E', 'U', 'C', '-', 'J', 'P', 0, 0, 0))
+ {
+ if (m == 1)
+ {
+ unsigned char c = (unsigned char) p[0];
+
+ if ((c >= 0xa1 && c < 0xff) || c == 0x8e || c == 0x8f)
+ goto incomplete;
+ }
+ if (m == 2)
+ {
+ unsigned char c = (unsigned char) p[0];
+
+ if (c == 0x8f)
+ {
+ unsigned char c2 = (unsigned char) p[1];
+
+ if (c2 >= 0xa1 && c2 < 0xff)
+ goto incomplete;
+ }
+ }
+ goto invalid;
+ }
+ if (STREQ_OPT (encoding,
+ "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0)
+ || STREQ_OPT (encoding,
+ "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0)
+ || STREQ_OPT (encoding,
+ "BIG5", 'B', 'I', 'G', '5', 0, 0, 0, 0, 0))
+ {
+ if (m == 1)
+ {
+ unsigned char c = (unsigned char) p[0];
+
+ if (c >= 0xa1 && c < 0xff)
+ goto incomplete;
+ }
+ goto invalid;
+ }
+ if (STREQ_OPT (encoding,
+ "EUC-TW", 'E', 'U', 'C', '-', 'T', 'W', 0, 0, 0))
+ {
+ if (m == 1)
+ {
+ unsigned char c = (unsigned char) p[0];
+
+ if ((c >= 0xa1 && c < 0xff) || c == 0x8e)
+ goto incomplete;
+ }
+ else /* m == 2 || m == 3 */
+ {
+ unsigned char c = (unsigned char) p[0];
+
+ if (c == 0x8e)
+ goto incomplete;
+ }
+ goto invalid;
+ }
+ if (STREQ_OPT (encoding,
+ "GB18030", 'G', 'B', '1', '8', '0', '3', '0', 0, 0))
+ {
+ if (m == 1)
+ {
+ unsigned char c = (unsigned char) p[0];
+
+ if ((c >= 0x90 && c <= 0xe3) || (c >= 0xf8 && c <= 0xfe))
+ goto incomplete;
+ }
+ else /* m == 2 || m == 3 */
+ {
+ unsigned char c = (unsigned char) p[0];
+
+ if (c >= 0x90 && c <= 0xe3)
+ {
+ unsigned char c2 = (unsigned char) p[1];
+
+ if (c2 >= 0x30 && c2 <= 0x39)
+ {
+ if (m == 2)
+ goto incomplete;
+ else /* m == 3 */
+ {
+ unsigned char c3 = (unsigned char) p[2];
+
+ if (c3 >= 0x81 && c3 <= 0xfe)
+ goto incomplete;
+ }
+ }
+ }
+ }
+ goto invalid;
+ }
+ if (STREQ_OPT (encoding, "SJIS", 'S', 'J', 'I', 'S', 0, 0, 0, 0, 0))
+ {
+ if (m == 1)
+ {
+ unsigned char c = (unsigned char) p[0];
+
+ if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xea)
+ || (c >= 0xf0 && c <= 0xf9))
+ goto incomplete;
+ }
+ goto invalid;
+ }
+
+ /* An unknown multibyte encoding. */
+ goto incomplete;