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Rewrite that function to work properly.

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This commit is contained in:
Alcaro 2016-02-24 23:27:51 +01:00
parent c0cd5256a2
commit 75b91e3ddc
1 changed files with 44 additions and 17 deletions
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61
menu/menu_animation.c
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@ -594,31 +594,37 @@ size_t utf8len(const char *string); /* rgui.c */
* Always NUL terminates. Does not copy half a character. Returns number of bytes. 's' is assumed valid UTF-8. */
size_t utf8cpy(char *d, size_t d_len, const char *s, size_t chars)
{
char *o_d = d;
bool incomplete = false;
char *d_org = d;
char *d_end = d+d_len;
const uint8_t *sb = (const uint8_t*)s;
const uint8_t *sb_org = sb;
if (chars!=SIZE_MAX) chars++; /* avoid hairy shenanigans with the >0 */
while (d_len > 0 /* NUL */ && chars > 0 && *s)
while (*sb && chars-- > 0)
{
uint8_t c = *s;
*d++ = *s++;
d_len--;
if ((c&0xC0)!=0x80) { chars--; incomplete=false; }
if ((c&0xC0) == 0xC0) incomplete=true;
sb++;
while ((*sb&0xC0) == 0x80) sb++;
}
if (!*s) incomplete = false;
if (incomplete)
{
while ((*--d & 0xC0) != 0xC0) {}
}
*d = '\0';
return d - o_d;
if (sb - sb_org > d_len-1 /* NUL */)
{
sb = sb_org + d_len-1;
//if ((*sb&0xC0) == 0x80)
{
while ((*sb&0xC0) == 0x80) sb--;
//sb--;
}
}
memcpy(d, sb_org, sb-sb_org);
d[sb-sb_org] = '\0';
return sb-sb_org;
}
const char *utf8skip(const char *str, size_t chars)
{
const uint8_t *strb = (const uint8_t*)str;
if (!chars) return str;
do {
strb++;
while ((*strb&0xC0)==0x80) strb++;
@ -642,9 +648,29 @@ const char *utf8skip(const char *str, size_t chars)
* Take the contents of @str and apply a ticker effect to it,
* and write the results in @s.
**/
void test(int a, const char*b, int c)
{
char hurr[64];
memset(hurr, 0xFF, 64);
utf8cpy(hurr, a,b,c);
printf("%i", (int)utf8skip(b,3));
printf("(%i)\"%s\"\n", strlen(hurr),hurr);
}
void menu_animation_ticker_str(char *s, size_t len, uint64_t idx,
const char *str, bool selected)
{
test(16, "abcd", 3); // 3
test(16, "øøøø", 3); // 3
test(7, "øøøø", 3); // 3
test(6, "øøøø", 3); // 2
test(7, "øøøø", 9); // 3
test(6, "øøøø", 9); // 2
test(9, "øøøø", 9); // 4
test(6, "bøvs", 4); // 4
test(5, "bøvs", 4); // 3
test(64, "sit", 2); // 2
printf("'%c'\n", 0xC2);
exit(0);
menu_animation_t *anim = menu_animation_get_ptr();
size_t str_len = utf8len(str);
size_t offset = 0;
@ -657,8 +683,9 @@ void menu_animation_ticker_str(char *s, size_t len, uint64_t idx,
if (!selected)
{
utf8cpy(s, PATH_MAX, str, len+1-3);
utf8cpy(s, PATH_MAX, str, len-3);
strlcat(s, "...", PATH_MAX);
printf("(%i)(%s)\n",(int)len,s);
return;
}