Improved parsing of bech32 entities

damus-c/cursor.h

@@ -10,6 +10,7 @@
 
 #include <ctype.h>
 #include <string.h>
+#include "bech32.h"
 
 typedef unsigned char u8;
 
@@ -31,6 +32,10 @@ static inline int is_invalid_url_ending(char c) {
     return c == '!' || c == '?' || c == ')' || c == '.' || c == ',' || c == ';';
 }
 
+static inline int is_bech32_character(char c) {
+    return (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || bech32_charset_rev[c] != -1;
+}
+
 static inline void make_cursor(struct cursor *c, const u8 *content, size_t len)
 {
     c->start = content;
@@ -70,6 +75,23 @@ static inline int consume_until_whitespace(struct cursor *cur, int or_end) {
     return or_end;
 }
 
+static inline int consume_until_non_bech32_character(struct cursor *cur, int or_end) {
+    char c;
+    int consumedAtLeastOne = 0;
+
+    while (cur->p < cur->end) {
+        c = *cur->p;
+
+        if (!is_bech32_character(c))
+            return consumedAtLeastOne;
+
+        cur->p++;
+        consumedAtLeastOne = 1;
+    }
+
+    return or_end;
+}
+
 static inline int parse_char(struct cursor *cur, char c) {
     if (cur->p >= cur->end)
         return 0;

damus-c/nostr_bech32.c

@@ -222,7 +222,7 @@ int parse_nostr_bech32(struct cursor *cur, struct nostr_bech32 *obj) {
     
     start = cur->p;
     
-    if (!consume_until_whitespace(cur, 1)) {
+    if (!consume_until_non_bech32_character(cur, 1)) {
         cur->p = start;
         return 0;
     }