[browser] Separated renderpage and handlecli in it's own source file

1 files changed, 127 insertions, 0 deletions

diff --git a/browser-stdio.c b/browser-stdio.c
new file mode 100644
index 0000000..4f2ff3b
--- /dev/null
+++ b/browser-stdio.c
@@ -0,0 +1,127 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <string.h>
+#include <sds/sds.h>
+#include <regex.h>
+#include <util.h>
+
+struct md_syntax {
+	regex_t anchor;
+};
+
+struct md_syntax syntax = {
+	.anchor = NULL,
+};
+
+int* anchorsIndecies;
+int anchorsCount = 0;
+
+void initRendering() {
+	/*
+	 * Compile regexes used in rendering
+	 */
+
+	 herr(regcomp(&syntax.anchor, "\\[\\([^]]*\\)\\](\\([^)]*\\))", 0), "regcomp");
+}
+
+void freeRendering() {
+	regfree(&syntax.anchor);
+
+	free(anchorsIndecies);
+}
+
+void renderPage(const sds page) {
+	if (sdslen(page) == 0) {
+		printf("Server didn't return page!\n");
+		return;
+	}
+
+	sds toPrint = sdsdup(page);
+	
+	/*
+	 * Parse Markdown constructs
+	 */
+
+	/* Substitute and store anchorsIndecies */
+	if (anchorsIndecies != NULL) {
+		free(anchorsIndecies);
+		anchorsCount = 0;
+		anchorsIndecies = NULL;
+	}
+	toPrint = gsub_getm(toPrint, &syntax.anchor, "\033[4m\1\033[0m\16", &anchorsIndecies, &anchorsCount);
+	
+	sds newPrint;
+	for (int i = 0, anchorInd = 0; i < anchorsCount; i++) {
+		anchorInd = strchr(toPrint, '\16') - toPrint;
+
+		/* In toPrint, replace '\16' with "\033[30;46m%d\033[0m", where %d is the variable i */
+		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;
+	}
+
+	/*
+	 * Print page on stdout
+	 */
+	write(1, toPrint, sdslen(toPrint));
+
+	sdsfree(toPrint);
+}
+
+#define MAX_LEN_COMMAND 16
+#define COMMAND_FORMAT ": %16s"
+
+int handleCLI(sds authority, sds *address, const sds page) {
+	// Get a line
+	char line[1024];
+	fgets(line, 1024, stdin);
+
+	// Nothing
+	if (line[0] == '\0') {
+		printf("Please enter a valid command!\n");
+		return 0;
+	}
+
+	// Number or URL
+	if (line[0] != ':') {
+		// Index of anchor
+		if (strchr(line, '/') == NULL) {
+			int gotoIndex = 0;
+			sscanf(line, "%d", &gotoIndex);
+
+			if (gotoIndex < 0 || gotoIndex >= anchorsCount) {
+				printf("Invalid anchor index!\n");
+				return 0;
+			}
+
+			char* newplace = strchr(page + anchorsIndecies[gotoIndex], '(') + 1;
+			sdsfree(*address);
+			*address = sdscatlen(sdsdup(authority), newplace, strchr(newplace, ')') - newplace);
+		}
+		// New address
+		else {
+			sdsfree(*address);
+			*address = sdsnewlen(line, strlen(line)-1 /* skip newline */);
+		}
+		return 0;
+	}
+
+	// Special command
+	
+	// Get command name and it's arguments
+	// Currently no command takes arguments
+	char name[MAX_LEN_COMMAND+1] = { '\0' };
+	int argsAssigned = sscanf(line, COMMAND_FORMAT, name);
+
+	if (streq(name, "q") || streq(name, "e") || streq(name, "quit") || streq(name, "exit")) {
+		return 1;
+	}
+
+	printf("Invalid command %s!\n", name);
+	return 0;
+}