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Handle UTF in long filenames (#20087)

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Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>
This commit is contained in:
LinFor
2020-11-11 23:14:39 +03:00
committed by GitHub
parent 0465e0ae3a
commit 5b9aeb2e5f
5 changed files with 124 additions and 100 deletions
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107
Marlin/src/lcd/fontutils.cpp
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@ -9,6 +9,8 @@
#include "../inc/MarlinConfig.h"
#define MAX_UTF8_CHAR_SIZE 4
#if HAS_WIRED_LCD
#include "marlinui.h"
#include "../MarlinCore.h"
@ -79,6 +81,8 @@ uint8_t* get_utf8_value_cb(uint8_t *pstart, read_byte_cb_t cb_read_byte, wchar_t
uint32_t val = 0;
uint8_t *p = pstart;
#define NEXT_6_BITS() do{ val <<= 6; p++; valcur = cb_read_byte(p); val |= (valcur & 0x3F); }while(0)
uint8_t valcur = cb_read_byte(p);
if (0 == (0x80 & valcur)) {
val = valcur;
@ -86,74 +90,51 @@ uint8_t* get_utf8_value_cb(uint8_t *pstart, read_byte_cb_t cb_read_byte, wchar_t
}
else if (0xC0 == (0xE0 & valcur)) {
val = valcur & 0x1F;
val <<= 6;
p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
p++;
}
else if (0xE0 == (0xF0 & valcur)) {
val = valcur & 0x0F;
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
p++;
}
else if (0xF0 == (0xF8 & valcur)) {
val = valcur & 0x07;
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
p++;
}
else if (0xF8 == (0xFC & valcur)) {
val = valcur & 0x03;
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
p++;
}
else if (0xFC == (0xFE & valcur)) {
val = valcur & 0x01;
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
val <<= 6; p++;
valcur = cb_read_byte(p);
val |= (valcur & 0x3F);
NEXT_6_BITS();
p++;
}
#if MAX_UTF8_CHAR_SIZE >= 3
else if (0xE0 == (0xF0 & valcur)) {
val = valcur & 0x0F;
NEXT_6_BITS();
NEXT_6_BITS();
p++;
}
#endif
#if MAX_UTF8_CHAR_SIZE >= 4
else if (0xF0 == (0xF8 & valcur)) {
val = valcur & 0x07;
NEXT_6_BITS();
NEXT_6_BITS();
NEXT_6_BITS();
p++;
}
#endif
#if MAX_UTF8_CHAR_SIZE >= 5
else if (0xF8 == (0xFC & valcur)) {
val = valcur & 0x03;
NEXT_6_BITS();
NEXT_6_BITS();
NEXT_6_BITS();
NEXT_6_BITS();
p++;
}
#endif
#if MAX_UTF8_CHAR_SIZE >= 6
else if (0xFC == (0xFE & valcur)) {
val = valcur & 0x01;
NEXT_6_BITS();
NEXT_6_BITS();
NEXT_6_BITS();
NEXT_6_BITS();
NEXT_6_BITS();
p++;
}
#endif
else if (0x80 == (0xC0 & valcur))
for (; 0x80 == (0xC0 & valcur); ) { p++; valcur = cb_read_byte(p); }
else
for (; ((0xFE & valcur) > 0xFC); ) { p++; valcur = cb_read_byte(p); }
for (; 0xFC < (0xFE & valcur); ) { p++; valcur = cb_read_byte(p); }
if (pval) *pval = val;