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X11: Fix Latin-1 text not being converted to UTF-8

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This commit is contained in:
Camilla Löwy 2017-08-08 16:25:13 +02:00
parent 9dbc935afb
commit 0b5023bc62
2 changed files with 96 additions and 60 deletions
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1
README.md
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@ -207,6 +207,7 @@ information on what to include when reporting a bug.
- [X11] Bugfix: Key name string encoding depended on current locale (#981,#983)
- [X11] Bugfix: Incremental reading of selections was not supported (#275)
- [X11] Bugfix: Selection I/O reported but did not support `COMPOUND_TEXT`
- [X11] Bugfix: Latin-1 text read from selections was not converted to UTF-8
- [Linux] Moved to evdev for joystick input (#906,#1005)
- [Linux] Bugfix: Event processing did not detect joystick disconnection (#932)
- [Linux] Bugfix: The joystick device path could be truncated (#1025)

153
src/x11_window.c
View File

@ -460,6 +460,81 @@ static char** parseUriList(char* text, int* count)
return paths;
}
// Encode a Unicode code point to a UTF-8 stream
// Based on cutef8 by Jeff Bezanson (Public Domain)
//
static size_t encodeUTF8(char* s, unsigned int ch)
{
size_t count = 0;
if (ch < 0x80)
s[count++] = (char) ch;
else if (ch < 0x800)
{
s[count++] = (ch >> 6) | 0xc0;
s[count++] = (ch & 0x3f) | 0x80;
}
else if (ch < 0x10000)
{
s[count++] = (ch >> 12) | 0xe0;
s[count++] = ((ch >> 6) & 0x3f) | 0x80;
s[count++] = (ch & 0x3f) | 0x80;
}
else if (ch < 0x110000)
{
s[count++] = (ch >> 18) | 0xf0;
s[count++] = ((ch >> 12) & 0x3f) | 0x80;
s[count++] = ((ch >> 6) & 0x3f) | 0x80;
s[count++] = (ch & 0x3f) | 0x80;
}
return count;
}
// Decode a Unicode code point from a UTF-8 stream
// Based on cutef8 by Jeff Bezanson (Public Domain)
//
#if defined(X_HAVE_UTF8_STRING)
static unsigned int decodeUTF8(const char** s)
{
unsigned int ch = 0, count = 0;
static const unsigned int offsets[] =
{
0x00000000u, 0x00003080u, 0x000e2080u,
0x03c82080u, 0xfa082080u, 0x82082080u
};
do
{
ch = (ch << 6) + (unsigned char) **s;
(*s)++;
count++;
} while ((**s & 0xc0) == 0x80);
assert(count <= 6);
return ch - offsets[count - 1];
}
#endif /*X_HAVE_UTF8_STRING*/
// Convert the specified Latin-1 string to UTF-8
//
static char* convertLatin1toUTF8(const char* source)
{
size_t size = 1;
const char* sp;
for (sp = source; *sp; sp++)
size += (*sp & 0x80) ? 2 : 1;
char* target = calloc(size, 1);
char* tp = target;
for (sp = source; *sp; sp++)
tp += encodeUTF8(tp, *sp);
return target;
}
// Centers the cursor over the window client area
//
static void centerCursor(_GLFWwindow* window)
@ -915,6 +990,7 @@ static const char* getSelectionString(Atom selection)
if (actualType == _glfw.x11.INCR)
{
size_t size = 1;
char* string = NULL;
for (;;)
{
@ -943,17 +1019,32 @@ static const char* getSelectionString(Atom selection)
if (itemCount)
{
size += itemCount;
*selectionString = realloc(*selectionString, size);
(*selectionString)[size - itemCount - 1] = '\0';
strcat(*selectionString, data);
string = realloc(string, size);
string[size - itemCount - 1] = '\0';
strcat(string, data);
}
if (!itemCount)
{
if (targets[i] == XA_STRING)
{
*selectionString = convertLatin1toUTF8(string);
free(string);
}
else
*selectionString = string;
break;
}
}
}
else if (actualType == targets[i])
{
if (targets[i] == XA_STRING)
*selectionString = convertLatin1toUTF8(data);
else
*selectionString = strdup(data);
}
XFree(data);
@ -1035,62 +1126,6 @@ static void releaseMonitor(_GLFWwindow* window)
}
}
// Encode a Unicode code point to a UTF-8 stream
// Based on cutef8 by Jeff Bezanson (Public Domain)
//
static size_t encodeUTF8(char* s, unsigned int ch)
{
size_t count = 0;
if (ch < 0x80)
s[count++] = (char) ch;
else if (ch < 0x800)
{
s[count++] = (ch >> 6) | 0xc0;
s[count++] = (ch & 0x3f) | 0x80;
}
else if (ch < 0x10000)
{
s[count++] = (ch >> 12) | 0xe0;
s[count++] = ((ch >> 6) & 0x3f) | 0x80;
s[count++] = (ch & 0x3f) | 0x80;
}
else if (ch < 0x110000)
{
s[count++] = (ch >> 18) | 0xf0;
s[count++] = ((ch >> 12) & 0x3f) | 0x80;
s[count++] = ((ch >> 6) & 0x3f) | 0x80;
s[count++] = (ch & 0x3f) | 0x80;
}
return count;
}
// Decode a Unicode code point from a UTF-8 stream
// Based on cutef8 by Jeff Bezanson (Public Domain)
//
#if defined(X_HAVE_UTF8_STRING)
static unsigned int decodeUTF8(const char** s)
{
unsigned int ch = 0, count = 0;
static const unsigned int offsets[] =
{
0x00000000u, 0x00003080u, 0x000e2080u,
0x03c82080u, 0xfa082080u, 0x82082080u
};
do
{
ch = (ch << 6) + (unsigned char) **s;
(*s)++;
count++;
} while ((**s & 0xc0) == 0x80);
assert(count <= 6);
return ch - offsets[count - 1];
}
#endif /*X_HAVE_UTF8_STRING*/
// Process the specified X event
//
static void processEvent(XEvent *event)