Added cstr_push(), cstr_pop() - push/pop one utf8 char.

Renamed c_forpred() to c_forloop() - used by c_forfiltered().

1 files changed, 10 insertions, 0 deletions

diff --git a/include/stc/cstr.h b/include/stc/cstr.h
index 983c3d4b..1e7a351f 100644
--- a/include/stc/cstr.h
+++ b/include/stc/cstr.h
@@ -349,6 +349,16 @@ STC_INLINE char* cstr_copy(cstr* self, cstr s) {
 }
 
 
+STC_INLINE char* cstr_push(cstr* self, const char* chr)
+    { return cstr_append_n(self, chr, utf8_chr_size(chr)); }
+
+STC_INLINE void cstr_pop(cstr* self) {
+    csview sv = cstr_sv(self);
+    const char* s = sv.str + sv.size;
+    while ((*--s & 0xC0) == 0x80) ;
+    _cstr_set_size(self, s - sv.str);
+}
+
 STC_INLINE char* cstr_append(cstr* self, const char* str)
     { return cstr_append_n(self, str, strlen(str)); }