ADDED   tenki/makefile
Index: tenki/makefile
==================================================================
--- tenki/makefile
+++ tenki/makefile
@@ -0,0 +1,2 @@
+tenki: tenki.cc
+	$(CC) -Ofast tenki.cc -o tenki -lssl

ADDED   tenki/tenki.cc
Index: tenki/tenki.cc
==================================================================
--- tenki/tenki.cc
+++ tenki/tenki.cc
@@ -0,0 +1,332 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <stdint.h>
+#include <openssl/ssl.h>
+
+#define ds_apikey "a6aa0337fafd8b8fcfafe84a403ed24f"
+#define ds_lang "ja"
+#define ds_exclude "minutely,hourly,daily,alerts,flags"
+
+#define req "GET /forecast/"
+#define http "?exclude=" ds_exclude "&lang=" ds_lang " HTTP/1.1\r\nHost: api.darksky.net\r\n\r\n"
+
+#define len(x) (sizeof(x)/sizeof(*x))
+#define start req ds_apikey "/"
+#define min(x,y) (x>y?y:x)
+
+SSL_CTX* sc;
+bool head(size_t* len, char* txt, char** body) {
+	char* hend = strstr(txt, "\r\n\r\n");
+	if (hend == nullptr) return false;
+	#define ctlhead "\r\nContent-Length:"
+	char* ctl = strstr(txt, ctlhead);
+	if (ctl == nullptr or ctl > hend) return false;
+	ctl += len(ctlhead);
+	*len = 0;
+	while(*ctl != '\r') {
+		if (*ctl >= '0' and *ctl <= '9') *len*=10,*len+=*ctl-'0';
+		++ctl;
+	}
+	*len+=(hend-txt)+4;
+	*body = hend+4;
+	return true;
+}
+size_t get(char* resp, size_t max, const char* msg, size_t total, char** body){
+
+	int port = 443;
+	const char* host = "api.darksky.net";
+	//printf("req: %s\n", msg);	
+	struct hostent* api;
+	struct sockaddr_in api_addr;
+	int sockfd, bytes;
+	size_t sent, recd;
+	
+	sockfd = socket(AF_INET, SOCK_STREAM, 0);
+	if (sockfd < 0) exit(2);
+	SSL *con = SSL_new(sc);
+	SSL_set_fd(con, sockfd);
+
+	//printf("getting host\n");
+	api = gethostbyname(host);
+	if (api == nullptr) exit(3);
+
+	memset(&api_addr, 0, sizeof(api_addr));
+	api_addr.sin_family = AF_INET;
+	api_addr.sin_port = htons(port);
+	memcpy(&api_addr.sin_addr.s_addr, api -> h_addr, api -> h_length);
+
+	//printf("connecting\n");
+	if (connect(sockfd,(struct sockaddr*)&api_addr,sizeof(api_addr)))
+		exit(4);
+	int err = SSL_connect(con);
+
+
+	sent = 0;
+//	printf("writing\n");
+	do {
+	//	printf("writing byte %x\n",*(msg+sent));
+		bytes = SSL_write(con,msg+sent,total-sent);
+		if (bytes < 0) exit (4);
+		if (bytes == 0) break;
+		++sent;
+	} while (sent < total);
+//	printf("receiving\n");
+	recd = 0;
+	size_t resplen = max;
+	bool rhead = false;
+	do {
+	//	printf("\n\nreading - addr %x; max %d\n",resp+recd,resplen-recd);
+		bytes = SSL_read(con,resp+recd,min(resplen-recd,15000));
+		if (bytes < 0) exit (5);
+		if (bytes == 0) break;
+		if(!rhead)rhead=head(&resplen, resp, body);
+		// printf("got %d bytes: %s", bytes, resp+recd);
+		recd += bytes;
+	} while (recd < resplen - 1);
+
+	close(sockfd);
+	SSL_shutdown(con);
+
+	return recd;
+}
+size_t pos(char* msg, const char* lat, const char* lng) {
+	char* cur = msg + len(start) - 1;
+	size_t latl = strlen(lat);
+	size_t longl = strlen(lng);
+	strcpy(cur, lat); cur += latl;
+	*cur++=','; 
+	strcpy(cur, lng); cur += longl;
+	strcpy(cur, http); cur += len(http);
+	*cur--=0;
+	return cur-msg;
+}
+bool estrc(size_t sz, const char* str1, const char* str2) {
+	for(size_t i = 0;i<sz;++i) {
+		if(*str1 == *str2) {
+			++str1; ++str2;
+		} else if (*str2 =='\\') {
+			++str2;
+			if(*str1 == *str2) {
+				++str1; ++str2;
+			} else return false;
+		} else {
+			return false;
+		}
+	}
+	return true;
+}
+struct pstr {
+	size_t sz;
+	const char* a;
+};
+union jsv {
+	float f;
+	pstr s;
+};
+/* void printkey(const char* key) {
+	size_t len = *key++;
+	for (size_t i = 0; i<len; ++i) {
+		printf("/%.*s",*key,key+1);
+		key += *key + 1;
+	};
+	printf("\n");
+} */
+void pplt(const char* str, const char* const end, const char** keys, const char** const keyend, jsv* values) {
+	// initialize parser state
+	size_t depth = 0;
+	const char* fld = nullptr;
+	const char* path[32];
+	path[0] = nullptr;
+	
+	while(*str++!='{'); //cheat
+	init: {
+		if (keys > keyend) return;
+		if (str > end) return;
+		/* print_path: {
+			printf("current path: /");
+			for (size_t i = 0; i < depth; ++i) {
+				printf("%.*s/",strchr(path[i],'"')-path[i],path[i]);
+			}
+			printf("\n");
+			printf("current key: ");
+			printkey(*keys);
+		} */
+		parse_char: {
+			switch(*str++) {
+				case ' ': case '\t': case '\n':
+					goto parse_char;
+				case '"':
+					path[depth] = str;
+					goto path_find_quote_end;
+				case '}':
+					if (depth == 0) return;
+					depth--;
+					while(*str!=',') ++str; ++str;
+					goto init;
+				default:
+					printf("found illegal char %c\n", *(str-1));
+					exit(6);
+			}
+		}
+		path_find_quote_end: {
+			switch (*str++) {
+				case '\\': ++str; goto path_find_quote_end;
+				case '"': goto read_value;
+				default: goto path_find_quote_end;
+			}
+		}
+		read_value: {
+			if (*str++!=':') {
+				printf("illegal char\n");
+				exit(6);
+			}
+			bool iskey;
+			const char* key = *keys;
+			jsv* value;
+			if (depth + 1 != *key++) {
+				iskey = false;
+				goto comp;
+			} else for (size_t i = 0; i <= depth; ++i) {
+				if (estrc(*key, key+1, path[i])) {
+					key += *key + 1;
+				} else {
+					iskey = false;
+					goto comp;
+				}
+			}
+			iskey = true;
+			value = values;
+			++keys; ++values;
+			comp: if (*str == '{') {
+				++depth; ++str;
+				goto init;
+			} else if (*str == '"') {
+				goto copy_str_value;
+			} else if (*str == '[') {
+				goto skip_array;
+			} else if ((*str >= '0' and *str <= '9') or *str=='-') {
+				goto copy_int_value;
+			} else {
+				printf("illegal character found in value %c\n", *str);
+				exit(6);
+			}
+
+			copy_str_value: {
+				fld = ++str;
+				while (*++str != '"') if (*str == '\\') { ++str; continue; }
+				if (iskey) {
+					value -> s.sz = str - fld;
+					value -> s.a = fld;
+				}
+				while (*++str != ',');
+				++str; goto init;
+			}
+			skip_array: {
+				size_t ard = 0;
+				skip_loop: switch (*++str) {
+					case '{': case '[': ++ard; goto skip_loop;
+					case '"': goto skip_str;
+					case '}': if (ard == 0) {
+								  printf("bad json\n");
+								  exit(7);
+							  } else { --ard; goto skip_loop; }
+					case ']': if (ard == 0) {
+							if (*++str == ',') { ++str; goto init; }
+							else goto init;
+						} else { --ard; }
+					default: goto skip_loop;
+				}
+				skip_str: while (*str != '"') if (*str == '\\') { str += 2; continue; } else ++str; goto skip_loop;
+			}
+			copy_int_value: {
+				if (!iskey) {
+					while(*str++!=',') if (str > end) return;
+					goto init;
+				}
+				value -> f = 0;
+				bool neg;
+				if (*str == '-') { neg=true; ++str; } else neg=false;
+				while(*str >= '0' and *str <= '9') {
+					value -> f *= 10;
+					value -> f += *str - '0';
+					++str;
+				}
+				if(*str == '.') {
+					float fac = 0.1;
+					float val = 0;
+					while(*++str >= '0' and *str <= '9') {
+						val += (((float)(*str - '0')) * fac);
+						fac *= 0.1;
+					}
+					value -> f += val;
+				}
+				if(neg) value -> f *= -1;
+				if (*str == ',') {
+					++str; goto init;
+				} else {
+					printf("illegal character %.*s\n",15,str);
+					exit(6);
+				}
+			}
+		}
+	}
+}
+int main(int argc, char** argv) {
+	if (argc != 3) exit(1);
+	SSL_load_error_strings();
+	SSL_library_init();
+	sc = SSL_CTX_new(SSLv23_client_method());
+
+	char msg[256] = start;
+	char resp[32368];
+	char* body;
+
+	// name the fields to extract from the json stream
+	// note: MUST BE LISTED IN ORDER THEY APPEAR
+	// paths are encoded as sequences of pstrings
+	// initial value indicates depth of path
+	// TODO: performance worth lack of flexibility?
+	const char* paths[] = {
+		"\2\x9""currently\7summary",
+		"\2\x9""currently\xfprecipIntensity",
+		"\2\x9""currently\xbtemperature",
+		"\2\x9""currently\x9windspeed",
+	};
+
+	size_t msgsz = pos(msg, argv[1], argv[2]);
+		//msgsz = size of transmit
+	//for (;;) {
+		size_t rspsz = get(resp, sizeof(resp), msg, msgsz, &body);
+		// if paths contains the keys, this contains the values
+		jsv values[len(paths)]; 
+		
+		parse: {
+			pplt(body, body + (rspsz - (resp - body)), paths, paths+len(paths), values);
+			
+			pstr summary = values[0].s;
+			float pcpint = values[1].f,
+				temp = values[2].f,
+				windspd = values[3].f;
+
+			printf("%.1f°  %%{F#ff9bbb}%.*s\n",
+					summary.sz,
+					summary.a,
+					temp);
+		}
+		// dark sky's API allows us to make 1000 free requests a day.
+		// let's try not to get too near that.
+		// hours in day 24 - minutes in day 24 * 60 = 1440
+		// so once a minute is almost half again too many
+		// 1440 / 2 = 720 leaving reasonable refresh time without
+		// going too near the limit. so we aim for one update
+		// every two minutes.
+	//	sleep(60 * 2);
+//	}
+
+	return 0;
+}