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Diffstat (limited to 'libX11/src/xlibi18n/lcUniConv/utf8.h')
-rw-r--r--libX11/src/xlibi18n/lcUniConv/utf8.h218
1 files changed, 109 insertions, 109 deletions
diff --git a/libX11/src/xlibi18n/lcUniConv/utf8.h b/libX11/src/xlibi18n/lcUniConv/utf8.h
index ef0f7303f..d00995ca0 100644
--- a/libX11/src/xlibi18n/lcUniConv/utf8.h
+++ b/libX11/src/xlibi18n/lcUniConv/utf8.h
@@ -1,109 +1,109 @@
-
-/*
- * UTF-8
- */
-
-/* Specification: RFC 2279 */
-
-static int
-utf8_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
-{
- unsigned char c = s[0];
-
- if (c < 0x80) {
- *pwc = c;
- return 1;
- } else if (c < 0xc2) {
- return RET_ILSEQ;
- } else if (c < 0xe0) {
- if (n < 2)
- return RET_TOOFEW(0);
- if (!((s[1] ^ 0x80) < 0x40))
- return RET_ILSEQ;
- *pwc = ((ucs4_t) (c & 0x1f) << 6)
- | (ucs4_t) (s[1] ^ 0x80);
- return 2;
- } else if (c < 0xf0) {
- if (n < 3)
- return RET_TOOFEW(0);
- if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
- && (c >= 0xe1 || s[1] >= 0xa0)))
- return RET_ILSEQ;
- *pwc = ((ucs4_t) (c & 0x0f) << 12)
- | ((ucs4_t) (s[1] ^ 0x80) << 6)
- | (ucs4_t) (s[2] ^ 0x80);
- return 3;
- } else if (c < 0xf8) {
- if (n < 4)
- return RET_TOOFEW(0);
- if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
- && (s[3] ^ 0x80) < 0x40
- && (c >= 0xf1 || s[1] >= 0x90)))
- return RET_ILSEQ;
- *pwc = ((ucs4_t) (c & 0x07) << 18)
- | ((ucs4_t) (s[1] ^ 0x80) << 12)
- | ((ucs4_t) (s[2] ^ 0x80) << 6)
- | (ucs4_t) (s[3] ^ 0x80);
- return 4;
- } else if (c < 0xfc) {
- if (n < 5)
- return RET_TOOFEW(0);
- if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
- && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
- && (c >= 0xf9 || s[1] >= 0x88)))
- return RET_ILSEQ;
- *pwc = ((ucs4_t) (c & 0x03) << 24)
- | ((ucs4_t) (s[1] ^ 0x80) << 18)
- | ((ucs4_t) (s[2] ^ 0x80) << 12)
- | ((ucs4_t) (s[3] ^ 0x80) << 6)
- | (ucs4_t) (s[4] ^ 0x80);
- return 5;
- } else if (c < 0xfe) {
- if (n < 6)
- return RET_TOOFEW(0);
- if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
- && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
- && (s[5] ^ 0x80) < 0x40
- && (c >= 0xfd || s[1] >= 0x84)))
- return RET_ILSEQ;
- *pwc = ((ucs4_t) (c & 0x01) << 30)
- | ((ucs4_t) (s[1] ^ 0x80) << 24)
- | ((ucs4_t) (s[2] ^ 0x80) << 18)
- | ((ucs4_t) (s[3] ^ 0x80) << 12)
- | ((ucs4_t) (s[4] ^ 0x80) << 6)
- | (ucs4_t) (s[5] ^ 0x80);
- return 6;
- } else
- return RET_ILSEQ;
-}
-
-static int
-utf8_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) /* n == 0 is acceptable */
-{
- int count;
- if (wc < 0x80)
- count = 1;
- else if (wc < 0x800)
- count = 2;
- else if (wc < 0x10000)
- count = 3;
- else if (wc < 0x200000)
- count = 4;
- else if (wc < 0x4000000)
- count = 5;
- else if (wc <= 0x7fffffff)
- count = 6;
- else
- return RET_ILSEQ;
- if (n < count)
- return RET_TOOSMALL;
- switch (count) { /* note: code falls through cases! */
- case 6: r[5] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x4000000;
- case 5: r[4] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x200000;
- case 4: r[3] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x10000;
- case 3: r[2] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x800;
- case 2: r[1] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0xc0;
- case 1: r[0] = wc;
- }
- return count;
-}
+
+/*
+ * UTF-8
+ */
+
+/* Specification: RFC 2279 */
+
+static int
+utf8_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
+{
+ unsigned char c = s[0];
+
+ if (c < 0x80) {
+ *pwc = c;
+ return 1;
+ } else if (c < 0xc2) {
+ return RET_ILSEQ;
+ } else if (c < 0xe0) {
+ if (n < 2)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x1f) << 6)
+ | (ucs4_t) (s[1] ^ 0x80);
+ return 2;
+ } else if (c < 0xf0) {
+ if (n < 3)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (c >= 0xe1 || s[1] >= 0xa0)))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x0f) << 12)
+ | ((ucs4_t) (s[1] ^ 0x80) << 6)
+ | (ucs4_t) (s[2] ^ 0x80);
+ return 3;
+ } else if (c < 0xf8) {
+ if (n < 4)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (s[3] ^ 0x80) < 0x40
+ && (c >= 0xf1 || s[1] >= 0x90)))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x07) << 18)
+ | ((ucs4_t) (s[1] ^ 0x80) << 12)
+ | ((ucs4_t) (s[2] ^ 0x80) << 6)
+ | (ucs4_t) (s[3] ^ 0x80);
+ return 4;
+ } else if (c < 0xfc) {
+ if (n < 5)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
+ && (c >= 0xf9 || s[1] >= 0x88)))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x03) << 24)
+ | ((ucs4_t) (s[1] ^ 0x80) << 18)
+ | ((ucs4_t) (s[2] ^ 0x80) << 12)
+ | ((ucs4_t) (s[3] ^ 0x80) << 6)
+ | (ucs4_t) (s[4] ^ 0x80);
+ return 5;
+ } else if (c < 0xfe) {
+ if (n < 6)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
+ && (s[5] ^ 0x80) < 0x40
+ && (c >= 0xfd || s[1] >= 0x84)))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x01) << 30)
+ | ((ucs4_t) (s[1] ^ 0x80) << 24)
+ | ((ucs4_t) (s[2] ^ 0x80) << 18)
+ | ((ucs4_t) (s[3] ^ 0x80) << 12)
+ | ((ucs4_t) (s[4] ^ 0x80) << 6)
+ | (ucs4_t) (s[5] ^ 0x80);
+ return 6;
+ } else
+ return RET_ILSEQ;
+}
+
+static int
+utf8_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) /* n == 0 is acceptable */
+{
+ int count;
+ if (wc < 0x80)
+ count = 1;
+ else if (wc < 0x800)
+ count = 2;
+ else if (wc < 0x10000)
+ count = 3;
+ else if (wc < 0x200000)
+ count = 4;
+ else if (wc < 0x4000000)
+ count = 5;
+ else if (wc <= 0x7fffffff)
+ count = 6;
+ else
+ return RET_ILSEQ;
+ if (n < count)
+ return RET_TOOSMALL;
+ switch (count) { /* note: code falls through cases! */
+ case 6: r[5] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x4000000;
+ case 5: r[4] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x200000;
+ case 4: r[3] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x10000;
+ case 3: r[2] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x800;
+ case 2: r[1] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0xc0;
+ case 1: r[0] = wc;
+ }
+ return count;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 22:34:32 +0000