#include "private.h"
cairo_t *heliCairo;
static char *colors[] = {
"transparent", "0 0 0 0",
"black", "0 0 0 1",
"white", "1 1 1 1",
"gray", "0.5 0.5 0.5 1",
"red", "1 0 0 1",
"green" "0 1 0 1",
"blue" "0 0 1 1",
"yellow", "1 1 0 1",
"magenta", "1 0 1 1",
"cyan", "0 1 1 1",
"yellow", "1 1 0 1",
"magenta", "1 0 1 1",
"cyan", "0 1 1 1",
"brown", "0.5 0.5 0 1",
};
int randomNumber(int min, int max)
{ return max <= min ? min : rand()%(max - min + 1) + min; }
double randomFloat()
{ return (double)rand()/(double)RAND_MAX; }
char* heliStringCopy(const char *x) {
int len = strlen(x) + 1;
char *cp = malloc(len + 1);
memcpy(cp, x, len);
return cp;
}
char* heliStringConcat3(const char *a, const char *b, const char *c) {
int la = strlen(a);
int lb = strlen(b);
int lc = strlen(c);
char *s = malloc(la + lb + lc + 1);
memcpy(s, a, la);
memcpy(s + la, b, lb);
memcpy(s + la + lb, c, lc);
s[la + lb + lc] = 0;
return s;
}
int heliStringEndsWithLowcase(const char *s, const char *tail) {
int ls = strlen(s);
int lt = strlen(tail);
if (lt > ls) return FALSE;
for(int i = 0; i < lt; ++i)
if (tolower(s[ls - i]) != tolower(tail[lt - i]))
return FALSE;
return TRUE;
}
void heliLowercase(char *x)
{ while(*x) { *x = tolower(*x); ++x; } }
void heliParseColor(const char *x, double *color) {
color[0] = color[1] = color[2] = 0;
color[3] = 1;
if (*x == '#') {
++x;
int hex[8] = { 0, 0, 0, 0, 0, 0, 15, 15 };
for(int i = 0; *x && i < 8; ++i) {
char c = tolower(*x);
if (c >= '0' && c <= '9') hex[i] = c - '0';
if (c >= 'a' && c <= 'f') hex[i] = c - 'a' + 10;
}
for(int i = 0; i < 4; ++i)
color[i] = (hex[i*2]*16 + hex[i*2 + 1])/255.0;
} else
if (isalpha(*x)) {
int count = (int)(sizeof(colors)/sizeof(*colors)/2);
for(int i = 0; i < count; ++i)
if (strcmp(x, colors[i*2]) == 0)
{ heliParseColor(colors[i*2 + 1], color); return; }
} else {
sscanf(x, "%lf %lf %lf %lf", &color[0], &color[1], &color[2], &color[3]);
}
}