summaryrefslogtreecommitdiff
path: root/MSVC/iconv/shift_jisx0213.h
diff options
context:
space:
mode:
Diffstat (limited to 'MSVC/iconv/shift_jisx0213.h')
-rw-r--r--MSVC/iconv/shift_jisx0213.h310
1 files changed, 310 insertions, 0 deletions
diff --git a/MSVC/iconv/shift_jisx0213.h b/MSVC/iconv/shift_jisx0213.h
new file mode 100644
index 0000000..264a040
--- /dev/null
+++ b/MSVC/iconv/shift_jisx0213.h
@@ -0,0 +1,310 @@
+/*
+ * Copyright (C) 1999-2002 Free Software Foundation, Inc.
+ * This file is part of the GNU LIBICONV Library.
+ *
+ * The GNU LIBICONV Library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * The GNU LIBICONV Library is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
+ * If not, write to the Free Software Foundation, Inc., 59 Temple Place -
+ * Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * SHIFT_JISX0213
+ */
+
+/* The structure of Shift_JISX0213 is as follows:
+
+ 0x00..0x7F: ISO646-JP, an ASCII variant
+
+ 0x{A1..DF}: JISX0201 Katakana.
+
+ 0x{81..9F,E0..EF}{40..7E,80..FC}: JISX0213 plane 1.
+
+ 0x{F0..FC}{40..7E,80..FC}: JISX0213 plane 2, with irregular row mapping.
+
+ Note that some JISX0213 characters are not contained in Unicode 3.2
+ and are therefore best represented as sequences of Unicode characters.
+*/
+
+#include "jisx0213.h"
+#include "flushwc.h"
+
+static int
+shift_jisx0213_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
+{
+ ucs4_t last_wc = conv->istate;
+ if (last_wc) {
+ /* Output the buffered character. */
+ conv->istate = 0;
+ *pwc = last_wc;
+ return 0; /* Don't advance the input pointer. */
+ } else {
+ unsigned char c = *s;
+ if (c < 0x80) {
+ /* Plain ISO646-JP character. */
+ if (c == 0x5c)
+ *pwc = (ucs4_t) 0x00a5;
+ else if (c == 0x7e)
+ *pwc = (ucs4_t) 0x203e;
+ else
+ *pwc = (ucs4_t) c;
+ return 1;
+ } else if (c >= 0xa1 && c <= 0xdf) {
+ *pwc = c + 0xfec0;
+ return 1;
+ } else {
+ if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xfc)) {
+ /* Two byte character. */
+ if (n >= 2) {
+ unsigned char c2 = s[1];
+ if ((c2 >= 0x40 && c2 <= 0x7e) || (c2 >= 0x80 && c2 <= 0xfc)) {
+ unsigned int c1;
+ ucs4_t wc;
+ /* Convert to row and column. */
+ if (c < 0xe0)
+ c -= 0x81;
+ else
+ c -= 0xc1;
+ if (c2 < 0x80)
+ c2 -= 0x40;
+ else
+ c2 -= 0x41;
+ /* Now 0 <= c <= 0x3b, 0 <= c2 <= 0xbb. */
+ c1 = 2 * c;
+ if (c2 >= 0x5e)
+ c2 -= 0x5e, c1++;
+ c2 += 0x21;
+ if (c1 >= 0x5e) {
+ /* Handling of JISX 0213 plane 2 rows. */
+ if (c1 >= 0x67)
+ c1 += 230;
+ else if (c1 >= 0x63 || c1 == 0x5f)
+ c1 += 168;
+ else
+ c1 += 162;
+ }
+ wc = jisx0213_to_ucs4(0x121+c1,c2);
+ if (wc) {
+ if (wc < 0x80) {
+ /* It's a combining character. */
+ ucs4_t wc1 = jisx0213_to_ucs_combining[wc - 1][0];
+ ucs4_t wc2 = jisx0213_to_ucs_combining[wc - 1][1];
+ /* We cannot output two Unicode characters at once. So,
+ output the first character and buffer the second one. */
+ *pwc = wc1;
+ conv->istate = wc2;
+ } else
+ *pwc = wc;
+ return 2;
+ }
+ }
+ } else
+ return RET_TOOFEW(0);
+ }
+ return RET_ILSEQ;
+ }
+ }
+}
+
+#define shift_jisx0213_flushwc normal_flushwc
+
+/* Composition tables for each of the relevant combining characters. */
+static const struct { unsigned short base; unsigned short composed; } shift_jisx0213_comp_table_data[] = {
+#define shift_jisx0213_comp_table02e5_idx 0
+#define shift_jisx0213_comp_table02e5_len 1
+ { 0x8684, 0x8685 }, /* 0x12B65 = 0x12B64 U+02E5 */
+#define shift_jisx0213_comp_table02e9_idx (shift_jisx0213_comp_table02e5_idx+shift_jisx0213_comp_table02e5_len)
+#define shift_jisx0213_comp_table02e9_len 1
+ { 0x8680, 0x8686 }, /* 0x12B66 = 0x12B60 U+02E9 */
+#define shift_jisx0213_comp_table0300_idx (shift_jisx0213_comp_table02e9_idx+shift_jisx0213_comp_table02e9_len)
+#define shift_jisx0213_comp_table0300_len 5
+ { 0x857b, 0x8663 }, /* 0x12B44 = 0x1295C U+0300 */
+ { 0x8657, 0x8667 }, /* 0x12B48 = 0x12B38 U+0300 */
+ { 0x8656, 0x8669 }, /* 0x12B4A = 0x12B37 U+0300 */
+ { 0x864f, 0x866b }, /* 0x12B4C = 0x12B30 U+0300 */
+ { 0x8662, 0x866d }, /* 0x12B4E = 0x12B43 U+0300 */
+#define shift_jisx0213_comp_table0301_idx (shift_jisx0213_comp_table0300_idx+shift_jisx0213_comp_table0300_len)
+#define shift_jisx0213_comp_table0301_len 4
+ { 0x8657, 0x8668 }, /* 0x12B49 = 0x12B38 U+0301 */
+ { 0x8656, 0x866a }, /* 0x12B4B = 0x12B37 U+0301 */
+ { 0x864f, 0x866c }, /* 0x12B4D = 0x12B30 U+0301 */
+ { 0x8662, 0x866e }, /* 0x12B4F = 0x12B43 U+0301 */
+#define shift_jisx0213_comp_table309a_idx (shift_jisx0213_comp_table0301_idx+shift_jisx0213_comp_table0301_len)
+#define shift_jisx0213_comp_table309a_len 14
+ { 0x82a9, 0x82f5 }, /* 0x12477 = 0x1242B U+309A */
+ { 0x82ab, 0x82f6 }, /* 0x12478 = 0x1242D U+309A */
+ { 0x82ad, 0x82f7 }, /* 0x12479 = 0x1242F U+309A */
+ { 0x82af, 0x82f8 }, /* 0x1247A = 0x12431 U+309A */
+ { 0x82b1, 0x82f9 }, /* 0x1247B = 0x12433 U+309A */
+ { 0x834a, 0x8397 }, /* 0x12577 = 0x1252B U+309A */
+ { 0x834c, 0x8398 }, /* 0x12578 = 0x1252D U+309A */
+ { 0x834e, 0x8399 }, /* 0x12579 = 0x1252F U+309A */
+ { 0x8350, 0x839a }, /* 0x1257A = 0x12531 U+309A */
+ { 0x8352, 0x839b }, /* 0x1257B = 0x12533 U+309A */
+ { 0x835a, 0x839c }, /* 0x1257C = 0x1253B U+309A */
+ { 0x8363, 0x839d }, /* 0x1257D = 0x12544 U+309A */
+ { 0x8367, 0x839e }, /* 0x1257E = 0x12548 U+309A */
+ { 0x83f3, 0x83f6 }, /* 0x12678 = 0x12675 U+309A */
+};
+
+static int
+shift_jisx0213_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
+{
+ int count = 0;
+ unsigned short lasttwo = conv->ostate;
+
+ if (lasttwo) {
+ /* Attempt to combine the last character with this one. */
+ unsigned int idx;
+ unsigned int len;
+
+ if (wc == 0x02e5)
+ idx = shift_jisx0213_comp_table02e5_idx,
+ len = shift_jisx0213_comp_table02e5_len;
+ else if (wc == 0x02e9)
+ idx = shift_jisx0213_comp_table02e9_idx,
+ len = shift_jisx0213_comp_table02e9_len;
+ else if (wc == 0x0300)
+ idx = shift_jisx0213_comp_table0300_idx,
+ len = shift_jisx0213_comp_table0300_len;
+ else if (wc == 0x0301)
+ idx = shift_jisx0213_comp_table0301_idx,
+ len = shift_jisx0213_comp_table0301_len;
+ else if (wc == 0x309a)
+ idx = shift_jisx0213_comp_table309a_idx,
+ len = shift_jisx0213_comp_table309a_len;
+ else
+ goto not_combining;
+
+ do
+ if (shift_jisx0213_comp_table_data[idx].base == lasttwo)
+ break;
+ while (++idx, --len > 0);
+
+ if (len > 0) {
+ /* Output the combined character. */
+ if (n >= 2) {
+ lasttwo = shift_jisx0213_comp_table_data[idx].composed;
+ r[0] = (lasttwo >> 8) & 0xff;
+ r[1] = lasttwo & 0xff;
+ conv->ostate = 0;
+ return 2;
+ } else
+ return RET_TOOSMALL;
+ }
+
+ not_combining:
+ /* Output the buffered character. */
+ if (n < 2)
+ return RET_TOOSMALL;
+ r[0] = (lasttwo >> 8) & 0xff;
+ r[1] = lasttwo & 0xff;
+ r += 2;
+ count = 2;
+ }
+
+ if (wc < 0x80 && wc != 0x5c && wc != 0x7e) {
+ /* Plain ISO646-JP character. */
+ if (n > count) {
+ r[0] = (unsigned char) wc;
+ conv->ostate = 0;
+ return count+1;
+ } else
+ return RET_TOOSMALL;
+ } else if (wc == 0x00a5) {
+ if (n > count) {
+ r[0] = 0x5c;
+ conv->ostate = 0;
+ return count+1;
+ } else
+ return RET_TOOSMALL;
+ } else if (wc == 0x203e) {
+ if (n > count) {
+ r[0] = 0x7e;
+ conv->ostate = 0;
+ return count+1;
+ } else
+ return RET_TOOSMALL;
+ } else if (wc >= 0xff61 && wc <= 0xff9f) {
+ /* Half-width katakana. */
+ if (n > count) {
+ r[0] = wc - 0xfec0;
+ conv->ostate = 0;
+ return count+1;
+ } else
+ return RET_TOOSMALL;
+ } else {
+ unsigned int s1, s2;
+ unsigned short jch = ucs4_to_jisx0213(wc);
+ if (jch != 0) {
+ /* Convert it to shifted representation. */
+ s1 = jch >> 8;
+ s2 = jch & 0x7f;
+ s1 -= 0x21;
+ s2 -= 0x21;
+ if (s1 >= 0x5e) {
+ /* Handling of JISX 0213 plane 2 rows. */
+ if (s1 >= 0xcd) /* rows 0x26E..0x27E */
+ s1 -= 102;
+ else if (s1 >= 0x8b || s1 == 0x87) /* rows 0x228, 0x22C..0x22F */
+ s1 -= 40;
+ else /* rows 0x221, 0x223..0x225 */
+ s1 -= 34;
+ /* Now 0x5e <= s1 <= 0x77. */
+ }
+ if (s1 & 1)
+ s2 += 0x5e;
+ s1 = s1 >> 1;
+ if (s1 < 0x1f)
+ s1 += 0x81;
+ else
+ s1 += 0xc1;
+ if (s2 < 0x3f)
+ s2 += 0x40;
+ else
+ s2 += 0x41;
+ if (jch & 0x0080) {
+ /* A possible match in comp_table_data. We have to buffer it. */
+ /* We know it's a JISX 0213 plane 1 character. */
+ if (jch & 0x8000) abort();
+ conv->ostate = (s1 << 8) | s2;
+ return count+0;
+ }
+ /* Output the shifted representation. */
+ if (n >= count+2) {
+ r[0] = s1;
+ r[1] = s2;
+ conv->ostate = 0;
+ return count+2;
+ } else
+ return RET_TOOSMALL;
+ }
+ return RET_ILUNI;
+ }
+}
+
+static int
+shift_jisx0213_reset (conv_t conv, unsigned char *r, int n)
+{
+ state_t lasttwo = conv->ostate;
+
+ if (lasttwo) {
+ if (n < 2)
+ return RET_TOOSMALL;
+ r[0] = (lasttwo >> 8) & 0xff;
+ r[1] = lasttwo & 0xff;
+ /* conv->ostate = 0; will be done by the caller */
+ return 2;
+ } else
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 18:24:26 +0000