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#include <libterm/terminal.h>
#include <knob/format.h>
#include <knob/block.h>
#include <knob/heap.h>
#include <knob/rand.h>
#include <pland/pcrt.h>
struct no_null_sn {
char *data;
uint32_t length;
};
struct var_dict_node {
struct var_dict_node *next;
struct var_dict_node *prev;
struct no_null_sn name;
struct no_null_sn value;
};
static struct var_dict_node *var_dict_start = 0;
__attribute__ ((pure))
static struct var_dict_node *get_node(struct no_null_sn name) {
for (struct var_dict_node *i = var_dict_start; i; i = i->next)
if ((i->name.length == name.length) &&
blockequ(i->name.data, name.data, name.length))
return i;
return 0;
}
static struct var_dict_node *new_node() {
struct var_dict_node *node = get_block(sizeof(struct var_dict_node));
node->prev = 0;
node->next = var_dict_start;
if (var_dict_start)
var_dict_start->prev = node;
var_dict_start = node;
return node;
}
void set_var(struct no_null_sn name, struct no_null_sn value) {
struct var_dict_node *node = get_node(name);
if (node)
free_block(node->value.data);
else {
node = new_node();
node->name.length = name.length;
node->name.data = get_block(name.length);
blockcpy(node->name.data, name.data, name.length);
}
node->value.length = value.length;
node->value.data = get_block(value.length);
blockcpy(node->value.data, value.data, value.length);
}
__attribute__ ((pure))
const struct no_null_sn *get_var(struct no_null_sn name) {
struct var_dict_node *node = get_node(name);
return node ? &node->value : 0;
}
void del_var(struct no_null_sn name) {
struct var_dict_node *node = get_node(name);
if (!node)
return;
free_block(node->name.data);
free_block(node->value.data);
if (node->prev)
node->prev->next = node->next;
if (node->next)
node->next->prev = node->prev;
if (node == var_dict_start)
var_dict_start = node->next;
free_block(node);
}
void dump_vars() {
for (struct var_dict_node *node = var_dict_start; node; node = node->next) {
term_addf_no_ww("$%ns$\t= %ns\n", node->name.length, node->name.data, node->value.length, node->value.data);
term_paint();
}
}
static const char hex_digits[] = "0123456789abcdef";
static char color[12] = "000000......";
static const struct no_null_sn color_name = {
.data = "_color",
.length = 6
};
static const struct no_null_sn color_value = {
.data = color,
.length = 12
};
void new_color() {
const uint16_t hue = gen_rand() % (0x33 * 6);
_pixel_t bg = {.r = 0xff, .g = 0xcc, .b = 0xcc};
if (hue <= 0x33) {
bg.b += hue;
goto got_bg;
}
bg.b += 0x33;
if (hue <= 0x33 * 2) {
bg.r -= hue - 0x33;
goto got_bg;
}
bg.r -= 0x33;
if (hue <= 0x33 * 3) {
bg.g += hue - 0x33 * 2;
goto got_bg;
}
bg.g += 0x33;
if (hue <= 0x33 * 4) {
bg.b -= hue - 0x33 * 3;
goto got_bg;
}
bg.b -= 0x33;
if (hue <= 0x33 * 5) {
bg.r += hue - 0x33 * 4;
goto got_bg;
}
bg.r += 0x33;
bg.g -= hue - 0x33 * 5;
got_bg:
color[ 6] = hex_digits[bg.r / 16];
color[ 7] = hex_digits[bg.r % 16];
color[ 8] = hex_digits[bg.g / 16];
color[ 9] = hex_digits[bg.g % 16];
color[10] = hex_digits[bg.b / 16];
color[11] = hex_digits[bg.b % 16];
set_var(color_name, color_value);
}
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