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Cygwin: console: Revise color setting codes in legacy console mode.

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- With this patch, foreground color and background color are allowed
  to be set simultaneously by 24 bit color escape sequence such as
  ESC[38;2;0;0;255;48;2;128;128;0m in legacy console mode.
This commit is contained in:
Takashi Yano 2020-02-01 13:28:39 +09:00 committed by Corinna Vinschen
parent 279f230620
commit ac1ccc29e1
2 changed files with 28 additions and 21 deletions
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2
winsup/cygwin/fhandler.h
View File

@ -1832,7 +1832,7 @@ enum ansi_intensity
#define gotrparen 9
#define eatpalette 10
#define endpalette 11
#define MAXARGS 10
#define MAXARGS 16
enum cltype
{

47
winsup/cygwin/fhandler_console.cc
View File

@ -1952,7 +1952,7 @@ fhandler_console::char_command (char c)
switch (c)
{
case 'm': /* Set Graphics Rendition */
for (int i = 0; i <= con.nargs; i++)
for (int i = 0; i < con.nargs; i++)
switch (con.args[i])
{
case 0: /* normal color */
@ -2020,38 +2020,39 @@ fhandler_console::char_command (char c)
con.fg = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED;
break;
case 38:
if (con.nargs < 1)
if (con.nargs < i + 2)
/* Sequence error (abort) */
break;
switch (con.args[1])
switch (con.args[i + 1])
{
case 2:
if (con.nargs != 4)
if (con.nargs < i + 5)
/* Sequence error (abort) */
break;
r = con.args[2];
g = con.args[3];
b = con.args[4];
r = con.args[i + 2];
g = con.args[i + 3];
b = con.args[i + 4];
r = r < (95 + 1) / 2 ? 0 : r > 255 ? 5 : (r - 55 + 20) / 40;
g = g < (95 + 1) / 2 ? 0 : g > 255 ? 5 : (g - 55 + 20) / 40;
b = b < (95 + 1) / 2 ? 0 : b > 255 ? 5 : (b - 55 + 20) / 40;
con.fg = table256[16 + r*36 + g*6 + b];
i += 4;
break;
case 5:
if (con.nargs != 2)
if (con.nargs < i + 3)
/* Sequence error (abort) */
break;
{
int idx = con.args[2];
int idx = con.args[i + 2];
if (idx < 0)
idx = 0;
if (idx > 255)
idx = 255;
con.fg = table256[idx];
i += 2;
}
break;
}
i += con.nargs;
break;
case 39:
con.fg = con.default_color & FOREGROUND_ATTR_MASK;
@ -2081,38 +2082,39 @@ fhandler_console::char_command (char c)
con.bg = BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_RED;
break;
case 48:
if (con.nargs < 1)
if (con.nargs < i + 2)
/* Sequence error (abort) */
break;
switch (con.args[1])
switch (con.args[i + 1])
{
case 2:
if (con.nargs != 4)
if (con.nargs < i + 5)
/* Sequence error (abort) */
break;
r = con.args[2];
g = con.args[3];
b = con.args[4];
r = con.args[i + 2];
g = con.args[i + 3];
b = con.args[i + 4];
r = r < (95 + 1) / 2 ? 0 : r > 255 ? 5 : (r - 55 + 20) / 40;
g = g < (95 + 1) / 2 ? 0 : g > 255 ? 5 : (g - 55 + 20) / 40;
b = b < (95 + 1) / 2 ? 0 : b > 255 ? 5 : (b - 55 + 20) / 40;
con.bg = table256[16 + r*36 + g*6 + b] << 4;
i += 4;
break;
case 5:
if (con.nargs != 2)
if (con.nargs < i + 3)
/* Sequence error (abort) */
break;
{
int idx = con.args[2];
int idx = con.args[i + 2];
if (idx < 0)
idx = 0;
if (idx > 255)
idx = 255;
con.bg = table256[idx] << 4;
i += 2;
}
break;
}
i += con.nargs;
break;
case 49:
con.bg = con.default_color & BACKGROUND_ATTR_MASK;
@ -2806,7 +2808,7 @@ fhandler_console::write (const void *vsrc, size_t len)
{
src++;
con.nargs++;
if (con.nargs >= MAXARGS)
if (con.nargs > MAXARGS)
con.nargs--;
}
else if (*src == ' ')
@ -2819,6 +2821,9 @@ fhandler_console::write (const void *vsrc, size_t len)
con.state = gotcommand;
break;
case gotcommand:
con.nargs ++;
if (con.nargs > MAXARGS)
con.nargs--;
char_command (*src++);
con.state = normal;
break;
@ -2871,6 +2876,8 @@ fhandler_console::write (const void *vsrc, size_t len)
{
con.state = gotarg1;
con.nargs++;
if (con.nargs > MAXARGS)
con.nargs--;
src++;
}
else if (isalpha (*src))