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144 lines
2.4 KiB
144 lines
2.4 KiB
2 months ago
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/*
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* UCW Library -- UTF-8 Functions
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*
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* (c) 1997--2004 Martin Mares <mj@ucw.cz>
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* (c) 2003 Robert Spalek <robert@ucw.cz>
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*
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* This software may be freely distributed and used according to the terms
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* of the GNU Lesser General Public License.
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*/
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#include <ucw/lib.h>
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#include <ucw/unicode.h>
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size_t
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utf8_strlen(const byte *str)
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{
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size_t len = 0;
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while (*str)
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{
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UTF8_SKIP(str);
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len++;
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}
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return len;
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}
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size_t
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utf8_strnlen(const byte *str, size_t n)
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{
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size_t len = 0;
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const byte *end = str + n;
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while (str < end)
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{
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UTF8_SKIP(str);
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len++;
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}
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return len;
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}
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#ifdef TEST
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#include <string.h>
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#include <stdio.h>
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int main(int argc, char **argv)
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{
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byte buf[256];
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#define FUNCS \
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F(UTF8_GET) F(UTF8_32_GET) F(UTF16_BE_GET) F(UTF16_LE_GET) \
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F(UTF8_PUT) F(UTF8_32_PUT) F(UTF16_BE_PUT) F(UTF16_LE_PUT)
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enum {
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#define F(x) FUNC_##x,
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FUNCS
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#undef F
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};
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char *names[] = {
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#define F(x) [FUNC_##x] = #x,
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FUNCS
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#undef F
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};
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uint func = ~0U;
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if (argc > 1)
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for (uint i = 0; i < ARRAY_SIZE(names); i++)
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if (!strcasecmp(names[i], argv[1]))
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func = i;
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if (!~func)
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{
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fprintf(stderr, "Invalid usage!\n");
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return 1;
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}
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if (func < FUNC_UTF8_PUT)
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{
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byte *p = buf, *q = buf, *last;
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uint u;
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bzero(buf, sizeof(buf));
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while (scanf("%x", &u) == 1)
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*q++ = u;
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while (p < q)
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{
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last = p;
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if (p != buf)
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putchar(' ');
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switch (func)
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{
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case FUNC_UTF8_GET:
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p = utf8_get(p, &u);
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break;
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case FUNC_UTF8_32_GET:
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p = utf8_32_get(p, &u);
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break;
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case FUNC_UTF16_BE_GET:
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p = utf16_be_get(p, &u);
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break;
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case FUNC_UTF16_LE_GET:
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p = utf16_le_get(p, &u);
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break;
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default:
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ASSERT(0);
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}
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printf("%04x", u);
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ASSERT(last < p && p <= q);
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}
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putchar('\n');
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}
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else
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{
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uint u, i=0;
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while (scanf("%x", &u) == 1)
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{
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byte *p = buf, *q = buf;
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switch (func)
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{
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case FUNC_UTF8_PUT:
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p = utf8_put(p, u);
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break;
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case FUNC_UTF8_32_PUT:
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p = utf8_32_put(p, u);
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break;
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case FUNC_UTF16_BE_PUT:
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p = utf16_be_put(p, u);
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break;
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case FUNC_UTF16_LE_PUT:
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p = utf16_le_put(p, u);
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break;
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default:
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ASSERT(0);
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}
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while (q < p)
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{
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if (i++)
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putchar(' ');
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printf("%02x", *q++);
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}
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}
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putchar('\n');
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}
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return 0;
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}
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#endif
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