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csi: reduce duplication in code handling SGR 38 and 48 sequences

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Craig Barnes 2022-03-22 23:06:22 +00:00 • committed by Daniel Eklöf
parent 6792f5fce0
commit 856086bbbe
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GPG key ID: 5BBD4992C116573F
1 changed files with 24 additions and 85 deletions
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109
csi.c
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@ -118,15 +118,18 @@ csi_sgr(struct terminal *term)
term->vt.attrs.fg = param - 30;
break;
case 38: {
case 38:
case 48: {
uint32_t color;
enum color_source src;
/* Indexed: 38;5;<idx> */
if (term->vt.params.idx - i - 1 >= 2 &&
term->vt.params.v[i + 1].value == 5)
{
term->vt.attrs.fg_src = COLOR_BASE256;
term->vt.attrs.fg = term->vt.params.v[i + 2].value;
src = COLOR_BASE256;
color = term->vt.params.v[i + 2].value;
i += 2;
}
/* RGB: 38;2;<r>;<g>;<b> */
@ -136,8 +139,8 @@ csi_sgr(struct terminal *term)
uint8_t r = term->vt.params.v[i + 2].value;
uint8_t g = term->vt.params.v[i + 3].value;
uint8_t b = term->vt.params.v[i + 4].value;
term->vt.attrs.fg_src = COLOR_RGB;
term->vt.attrs.fg = r << 16 | g << 8 | b;
src = COLOR_RGB;
color = r << 16 | g << 8 | b;
i += 4;
}
@ -145,10 +148,8 @@ csi_sgr(struct terminal *term)
else if (term->vt.params.v[i].sub.idx >= 2 &&
term->vt.params.v[i].sub.value[0] == 5)
{
const struct vt_param *param = &term->vt.params.v[i];
term->vt.attrs.fg_src = COLOR_BASE256;
term->vt.attrs.fg = param->sub.value[1];
src = COLOR_BASE256;
color = term->vt.params.v[i].sub.value[1];
}
/*
@ -177,8 +178,8 @@ csi_sgr(struct terminal *term)
uint8_t g = param->sub.value[g_idx];
uint8_t b = param->sub.value[b_idx];
term->vt.attrs.fg_src = COLOR_RGB;
term->vt.attrs.fg = r << 16 | g << 8 | b;
src = COLOR_RGB;
color = r << 16 | g << 8 | b;
}
/* Transparent: 38:1 */
@ -186,9 +187,19 @@ csi_sgr(struct terminal *term)
/* CMYK: 38:4:<color-space>:c:m:y:k[:tolerance:tolerance-color-space] */
/* Unrecognized */
else
else {
UNHANDLED_SGR(i);
break;
}
if (param == 38) {
term->vt.attrs.fg_src = src;
term->vt.attrs.fg = color;
} else {
xassert(param == 48);
term->vt.attrs.bg_src = src;
term->vt.attrs.bg = color;
}
break;
}
@ -209,78 +220,6 @@ csi_sgr(struct terminal *term)
term->vt.attrs.bg = param - 40;
break;
case 48: {
/* Indexed: 48;5;<idx> */
if (term->vt.params.idx - i - 1 >= 2 &&
term->vt.params.v[i + 1].value == 5)
{
term->vt.attrs.bg_src = COLOR_BASE256;
term->vt.attrs.bg = term->vt.params.v[i + 2].value;
i += 2;
}
/* RGB: 48;2;<r>;<g>;<b> */
else if (term->vt.params.idx - i - 1 >= 4 &&
term->vt.params.v[i + 1].value == 2)
{
uint8_t r = term->vt.params.v[i + 2].value;
uint8_t g = term->vt.params.v[i + 3].value;
uint8_t b = term->vt.params.v[i + 4].value;
term->vt.attrs.bg_src = COLOR_RGB;
term->vt.attrs.bg = r << 16 | g << 8 | b;
i += 4;
}
/* Indexed: 48:5:<idx> */
else if (term->vt.params.v[i].sub.idx >= 2 &&
term->vt.params.v[i].sub.value[0] == 5)
{
const struct vt_param *param = &term->vt.params.v[i];
term->vt.attrs.bg_src = COLOR_BASE256;
term->vt.attrs.bg = param->sub.value[1];
}
/*
* RGB: 48:2:<color-space>:r:g:b[:ignored:tolerance:tolerance-color-space]
* RGB: 48:2:r:g:b
*
* The second version is a "bastard" version - many
* programs "forget" the color space ID
* parameter... *sigh*
*/
else if (term->vt.params.v[i].sub.idx >= 4 &&
term->vt.params.v[i].sub.value[0] == 2)
{
const struct vt_param *param = &term->vt.params.v[i];
bool have_color_space_id = param->sub.idx >= 5;
/* 0 - color space (ignored) */
int r_idx = 2 - !have_color_space_id;
int g_idx = 3 - !have_color_space_id;
int b_idx = 4 - !have_color_space_id;
/* 5 - unused */
/* 6 - CS tolerance */
/* 7 - color space associated with tolerance */
uint8_t r = param->sub.value[r_idx];
uint8_t g = param->sub.value[g_idx];
uint8_t b = param->sub.value[b_idx];
term->vt.attrs.bg_src = COLOR_RGB;
term->vt.attrs.bg = r << 16 | g << 8 | b;
}
/* Transparent: 48:1 */
/* CMY: 48:3:<color-space>:c:m:y[:tolerance:tolerance-color-space] */
/* CMYK: 48:4:<color-space>:c:m:y:k[:tolerance:tolerance-color-space] */
else
UNHANDLED_SGR(i);
break;
}
case 49:
term->vt.attrs.bg_src = COLOR_DEFAULT;
break;