smu

commit b4bfba10cb2c000c39249228fcf6286831484a66
parent 4aea24b36933f3bb3e68fc56226da50803e4d337
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Tue, 11 May 2021 01:42:25 +0200

only escape quotes in attributes, in HTML text nodes it's not needed and ugly

Diffstat:
M
smu.c
 | 
31
++++++++++++++++++++++++-------

1 file changed, 24 insertions(+), 7 deletions(-)
diff --git a/smu.c b/smu.c
@@ -33,6 +33,7 @@ static int dosurround(const char *begin, const char *end, int newblock);  /* Par
 static int dounderline(const char *begin, const char *end, int newblock); /* Parser for underline tags */
 static void *ereallocz(void *p, size_t size);
 static void hprint(const char *begin, const char *end);                   /* escapes HTML and prints it to output */
+static void hprintattr(const char *begin, const char *end);                   /* escapes HTML for attributes and prints it to output */
 static void process(const char *begin, const char *end, int isblock);     /* Processes range between begin and end. */
 
 /* list of parsers */
@@ -305,24 +306,24 @@ dolink(const char *begin, const char *end, int newblock) {
 	len = q + 1 - begin;
 	if(img) {
 		fputs("<img src=\"", stdout);
-		hprint(link, linkend);
+		hprintattr(link, linkend);
 		fputs("\" alt=\"", stdout);
-		hprint(desc, descend);
+		hprintattr(desc, descend);
 		fputs("\" ", stdout);
 		if(title && titleend) {
 			fputs("title=\"", stdout);
-			hprint(title, titleend);
+			hprintattr(title, titleend);
 			fputs("\" ", stdout);
 		}
 		fputs("/>", stdout);
 	}
 	else {
 		fputs("<a href=\"", stdout);
-		hprint(link, linkend);
+		hprintattr(link, linkend);
 		fputs("\"", stdout);
 		if(title && titleend) {
 			fputs(" title=\"", stdout);
-			hprint(title, titleend);
+			hprintattr(title, titleend);
 			fputs("\"", stdout);
 		}
 		fputs(">", stdout);
@@ -495,7 +496,7 @@ doshortlink(const char *begin, const char *end, int newblock) {
 					fprintf(stdout, "&#%u;", *c);
 			}
 			else {
-				hprint(begin + 1, p);
+				hprintattr(begin + 1, p);
 				fputs("\">", stdout);
 				hprint(begin + 1, p);
 			}
@@ -585,7 +586,7 @@ ereallocz(void *p, size_t size) {
 }
 
 void
-hprint(const char *begin, const char *end) {
+hprintattr(const char *begin, const char *end) {
 	const char *p;
 
 	for(p = begin; p != end; p++) {
@@ -603,6 +604,22 @@ hprint(const char *begin, const char *end) {
 }
 
 void
+hprint(const char *begin, const char *end) {
+	const char *p;
+
+	for(p = begin; p != end; p++) {
+		if(*p == '&')
+			fputs("&amp;", stdout);
+		else if(*p == '>')
+			fputs("&gt;", stdout);
+		else if(*p == '<')
+			fputs("&lt;", stdout);
+		else
+			fputc(*p, stdout);
+	}
+}
+
+void
 process(const char *begin, const char *end, int newblock) {
 	const char *p, *q;
 	int affected;