Added string view

4 files changed, 41 insertions, 2 deletions

diff --git a/README.md b/README.md
index d5130a3..0a2ff64 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@
     - [x] threadpool
     - [x] vec2sw
     - [x] wav
-- [ ] Add strng_view
+- [x] Add strng_view
     - want start, end, max_len, char*
 - [x] Make status return values consistent. i64, 0 success, -1 fail, >0 info if necessary
     - [x] Deque enqueue (both)
diff --git a/src/string.c b/src/string.c
index c808642..38d7824 100644
--- a/src/string.c
+++ b/src/string.c
@@ -3,6 +3,7 @@
 #include "log.h"
 #include "string.h"
 
+#include <ctype.h>
 #include <string.h>
 
 strng_t *strng_new(smrt_arena_t *arena, u64 size) {
@@ -81,3 +82,17 @@ void strng_clear(strng_t *string) {
     memset((u8*)string+STRNG_BASE_POS, 0, string->len);
     string->len = 0;
 }
+
+strng_view_t sv_from_chars(char const* c) { u64 l = strlen(c);
+                                            return (strng_view_t){
+                                                .start=0,
+                                                .end=l,
+                                                .max=l,
+                                                .string=c, }; }
+
+void  sv_trim_left(strng_view_t *sv) { while (sv->start<=  sv->end && isspace(*(sv->string+sv->start)) ) sv->start++; }
+void sv_trim_right(strng_view_t *sv) { while (sv->end  >=sv->start && isspace(*(  sv->string+sv->end)) )   sv->end--; }
+void       sv_trim(strng_view_t *sv) { sv_trim_left(sv);
+                                      sv_trim_right(sv); }
+
+void sv_reset(strng_view_t *sv) { sv->end=sv->max; sv->start=0; }
diff --git a/src/string.h b/src/string.h
index 5a89dec..999add8 100644
--- a/src/string.h
+++ b/src/string.h
@@ -18,3 +18,28 @@ strng_t * strng_dup(smrt_arena_t *arena, strng_t const *src);
    void strng_clear(strng_t *string);
 
 #define STRNG_FMT(s) (i32)s->len, (char *)((u8*)s+STRNG_BASE_POS)
+
+typedef struct {
+       u64   start;
+       u64     end;
+       u64     max;
+char const *string;
+} strng_view_t;
+
+static inline strng_view_t sv_from(strng_t *string) {
+    return (strng_view_t){
+        .string=(char*)((u8*)string+STRNG_BASE_POS),
+        .start=0,
+        .end=string->len,
+        .max=string->len,
+    };
+}
+strng_view_t sv_from_chars(char const* c);
+
+void  sv_trim_left(strng_view_t *sv);
+void sv_trim_right(strng_view_t *sv);
+void       sv_trim(strng_view_t *sv);
+void      sv_reset(strng_view_t *sv);
+
+#define SV_FMT(sv) (i32)((sv)->end - (sv)->start), (char *)((u8*)((sv)->string) + (sv)->start)
+
diff --git a/src/threadpool.c b/src/threadpool.c
index 56fcc3b..a1aa4c3 100644
--- a/src/threadpool.c
+++ b/src/threadpool.c
@@ -6,7 +6,6 @@
 
 #include <bits/pthreadtypes.h>
 #include <pthread.h>
-#include <stdatomic.h>
 #include <string.h>
 
 typedef struct {