[browser] Implemented anchor parsing and navigation

1 files changed, 81 insertions, 16 deletions

diff --git a/browser.c b/browser.c
index fe36782..5e0396f 100644
--- a/browser.c
+++ b/browser.c
@@ -5,13 +5,35 @@
 #include <arpa/inet.h>
 
 #include <unistd.h>
+#include <stdlib.h>
 #include <stdio.h>
 
 #include <string.h>
 #include <sds/sds.h>
+#include <regex.h>
 #include <util.h>
 
-sds get_page(const int fd_socket) {
+int create_socket(const char* ip, const char* port) {
+	/*
+	 * Create socket for connecting with server
+	 */
+	int fd_socket;
+	herr(fd_socket = socket(AF_INET, SOCK_STREAM, 0), "socket");
+
+	struct sockaddr_in sa_server = {
+		.sin_family = AF_INET,
+		.sin_port = inet_atop(port),
+	};
+	herr(inet_aton(ip, &sa_server.sin_addr.s_addr), "inet_aton");
+
+	herr(connect(fd_socket, (struct sockaddr*)&sa_server, sizeof(struct sockaddr_in)), "connect");
+
+	return fd_socket;
+}
+
+sds get_page(const int fd_socket, const char* URL) {
+	write(fd_socket, URL, strlen(URL));
+
 	sds page = sdsempty();
 
 	char buff[512];
@@ -24,30 +46,73 @@ sds get_page(const int fd_socket) {
 	return page;
 }
 
-void renderPage(const sds page) {
-	sds toPrint = gsub(page, "\\*[^*]*\\*", "emph");
+struct md_syntax {
+	regex_t anchor;
+};
+
+void renderPage(const sds page, const struct md_syntax* syntax, int* *matches, int *matchesCount) {
+	sds toPrint = sdsdup(page);
+
+	/* Substitute and register anchors */
+	toPrint = gsub_getm(toPrint, &syntax->anchor, "\033[4m\1\033[0m\16", matches, matchesCount);
+	
+	int anchorInd = 0;
+	sds newPrint;
+	for (int i = 0; i < *matchesCount; i++) {
+		anchorInd = strchr(toPrint, '\16') - toPrint;
+
+		toPrint[anchorInd] = '\0';
+		newPrint = sdsgrowzero(sdsempty(), sdslen(toPrint) + digits(i) + 8 + 4);
+		sprintf(newPrint, "%s\033[30;46m%d\033[0m%s", toPrint, i, toPrint + anchorInd + 1);
+
+		sdsfree(toPrint);
+		toPrint = newPrint;
+	}
+
 	write(1, toPrint, sdslen(toPrint));
 	sdsfree(toPrint);
 }
 
 int main(int argc, char* argv[]) {
-	int fd_socket;
-	herr(fd_socket = socket(AF_INET, SOCK_STREAM, 0), "socket");
+	/*
+	 * Preparation for rendering
+	 */
 
-	struct sockaddr_in sa_server = {
-		.sin_family = AF_INET,
-		.sin_port = inet_atop("8080"),
+	struct md_syntax md = {
+		.anchor = NULL,
 	};
-	herr(inet_aton("127.0.0.1", &sa_server.sin_addr.s_addr), "inet_aton");
+	herr(regcomp(&md.anchor, "\\[\\([^]]*\\)\\](\\([^)]*\\))", 0), "regcomp");
 
-	herr(connect(fd_socket, (struct sockaddr*)&sa_server, sizeof(struct sockaddr_in)), "connect");
+	/*
+	 * Server-client communication
+	 */
 
-	/* char msg[] = "hello@/test.txt"; */
-	write(fd_socket, argv[1], strlen(argv[1]));
+	sds address = sdsnew(argv[1]);
+	int count = 0;
+	sds page;
+	int* anchorIndecies = NULL;
+	int anchorCount = 0;
 
-	sds page = get_page(fd_socket);
-	renderPage(page);
-	sdsfree(page);
+	int gotoIndex = 0;
+	int fd_socket;
+	while (count < 2) {
+		fd_socket = create_socket("127.0.0.1", "8080");
+		page = get_page(fd_socket, address);
+		free(anchorIndecies);
+		anchorCount = 0;
+		renderPage(page, &md, &anchorIndecies, &anchorCount);
+
+		scanf("%d", &gotoIndex);
+		sdsfree(address);
+		char* newplace = strchr(page + anchorIndecies[gotoIndex], '(') + 1;
+		address = sdscatlen(sdsnew(argv[1]), newplace, strchr(newplace, ')') - newplace);
+		count++;
 
-	close(fd_socket);
+		close(fd_socket);
+	}
+
+	sdsfree(page);
+	sdsfree(address);
+	free(anchorIndecies);
+	regfree(&md.anchor);
 }