fileio: add support for quoting to pkg_fgetline().

fileio.c

@@ -21,6 +21,7 @@ pkg_fgetline(char *line, size_t size, FILE *stream)
 {
 	char *s = line;
 	char *end = line + size - 1;
+	bool quoted = false;
 	int c = '\0', c2;
 
 	if (s == NULL)
@@ -28,9 +29,22 @@ pkg_fgetline(char *line, size_t size, FILE *stream)
 
 	while (s < end && (c = getc(stream)) != EOF)
 	{
-		if (c == '\n')
+		if (c == '\\')
+		{
+			quoted = true;
+			continue;
+		}
+
+		else if (c == '\n')
 		{
 			*s++ = c;
+
+			if (quoted)
+			{
+				quoted = false;
+				continue;
+			}
+
 			break;
 		}
 		else if (c == '\r')
@@ -38,9 +52,24 @@ pkg_fgetline(char *line, size_t size, FILE *stream)
 			*s++ = '\n';
 
 			if ((c2 = getc(stream)) == '\n')
+			{
+				if (quoted)
+				{
+					quoted = false;
+					continue;
+				}
+
 				break;
+			}
 
 			ungetc(c2, stream);
+
+			if (quoted)
+			{
+				quoted = false;
+				continue;
+			}
+
 			break;
 		}
 		else