From 477ce90d019546e72dd6485139271806881a8e8e Mon Sep 17 00:00:00 2001
From: steven-na <noreply.github@stvnc.dev>
Date: Fri, 2 Oct 2026 00:28:52 -0700
Subject: lots of new string stuff

---
 src/string.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

(limited to 'src/string.c')

diff --git a/src/string.c b/src/string.c
index f9340dd..5ecb020 100644
--- a/src/string.c
+++ b/src/string.c
@@ -36,6 +36,22 @@ strng_t *strng_from(smrt_arena_t *arena, char const *c) {
     return s;
 }
 
+strng_t *strng_from_sv(smrt_arena_t *arena, strng_view_t const *sv) {
+    u64 size = sv_len(sv);
+
+    strng_t *s = strng_new(arena, size);
+
+    if (!s) {
+        log_error("Failed to allocate strng");
+        return NULL;
+    }
+
+    memcpy((u8*)s+STRNG_BASE_POS, SV_TO(*sv), size);
+    s->len = size;
+
+    return s;
+}
+
 strng_t *strng_dup(smrt_arena_t *arena, strng_t const *src) {
     u64 size = src->len + sizeof(strng_t);
 
@@ -144,6 +160,19 @@ void strng_map(strng_t *string, char (F)(char c)) {
     }
 }
 
+b32 strng_validate(strng_t const *string, string_validation_func validation) {
+    u64 l = string->len;
+    if (l == 0) return true;
+
+    for (u64 i = 0; i < l; i++) {
+        char c = *(STRNG_TO(string)+i);
+        if (!validation(c)) {
+            return false;
+        }
+    }
+
+    return true;
+}
 strng_view_t sv_from_chars(char const* c) { u64 l = strlen(c);
                                             return (strng_view_t){
                                                 .start=0,
@@ -252,6 +281,20 @@ void sv_set_len_right(strng_view_t *sv, u64 n) {
     sv->start = sv->end - n + 1;
 }
 
+u64 sv_read_n(strng_view_t *sv, char *buf, u64 n) {
+    u64 l = sv_len(sv);
+    if (n > l) {
+        n = l;
+    }
+
+    if (n == 0) return 0;
+
+    memcpy(buf, SV_TO(*sv), n);
+
+    sv->start += n;
+
+    return n;
+}
 char sv_get_start(strng_view_t const *sv) {
     if (sv_len(sv)) {
         return *(sv->string + sv->start);
@@ -398,6 +441,20 @@ b32 sv_eq_case_insensitive(strng_view_t const *sv1, strng_view_t const *sv2) {
     return true;
 }
 
+b32 sv_validate(strng_view_t const *sv, string_validation_func validation) {
+    u64 l = sv_len(sv);
+    if (l == 0) return true;
+
+    for (u64 i = 0; i < l; i++) {
+        char c = *(sv->string+sv->start+i);
+        if (!validation(c)) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
 strng_view_t sv_split_once(strng_view_t *sv, char const *needle) {
     u64 nlen = strlen(needle);
     u64 hlen = sv_len(sv);
-- 
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