jrk

commit 0845e6f115d1314d21e7176c79570bcd25707d73
parent 46f176d349f4f10cdf16e808bbafafb59a7842de
Author: Jake Koroman <jake@jakekoroman.com>
Date:   Tue,  2 Sep 2025 11:59:09 -0400

add jrk_tmpstrings api.

Diffstat:
M
jrk.h
 | 
37
+++++++++++++++++++++++++++++++++++++

1 file changed, 37 insertions(+), 0 deletions(-)
diff --git a/jrk.h b/jrk.h
@@ -29,6 +29,9 @@ typedef double f64;
 #define JRK_UNUSED(x) (void)x
 #define JRK_ARRSIZE(arr) (sizeof(arr) / sizeof(arr[0]))
 
+#define JRK_TMPSTRINGS_ARR_CAPACITY 4
+#define JRK_TMPSTRINGS_STR_CAPACITY 1024
+
 typedef struct {
     u8 *data;
     u64 count;
@@ -76,6 +79,9 @@ jrk_StringView jrk_sv_trim(jrk_StringView);
 jrk_StringView jrk_sv_from_cstr(char*);
 jrk_StringView jrk_sv_chop_delim(jrk_StringView*, char delim);
 
+char *jrk_tmpstrings_push(char *);
+char *jrk_tmpstrings_pushf(char *, ...);
+
 /* XXX: im not thrilled with this api, the memory can get messy real fast */
 #define jrk_sv_chop_delim_loop(sv, it, delim) \
     for (jrk_StringView it = jrk_sv_chop_delim(sv, delim); it.count != 0; it = jrk_sv_chop_delim(sv, delim))
@@ -158,6 +164,9 @@ jrk_StringView jrk_sv_chop_delim(jrk_StringView*, char delim);
   #define StringBuilder        jrk_StringBuilder
   #define StringView           jrk_StringView
 
+  #define tmpstrings_push      jrk_tmpstrings_push
+  #define tmpstrings_pushf     jrk_tmpstrings_pushf
+
   #define sb_appendf           jrk_sb_appendf
   #define sb_append_null       jrk_sb_append_null
   #define sb_append_buf        jrk_sb_append_buf
@@ -259,6 +268,34 @@ jrk_erealloc(void *ptr, u64 size)
     return p;
 }
 
+// NOTE: only allocate space for translation units with JRK_IMPLEMENTATION
+static char jrk__tmpstrings[JRK_TMPSTRINGS_ARR_CAPACITY][JRK_TMPSTRINGS_STR_CAPACITY];
+static u32 jrk__tmpstrings_idx = 0;
+
+char *
+jrk_tmpstrings_push(char *str)
+{
+    char *result;
+    result = jrk_tmpstrings_pushf(str);
+    return result;
+}
+
+char *
+jrk_tmpstrings_pushf(char *fmt, ...)
+{
+    char *result = jrk__tmpstrings[jrk__tmpstrings_idx];
+
+    va_list args;
+    va_start(args, fmt);
+    vsnprintf(result, JRK_TMPSTRINGS_STR_CAPACITY, fmt, args);
+    va_end(args);
+
+    if (++jrk__tmpstrings_idx >= JRK_TMPSTRINGS_ARR_CAPACITY)
+        jrk__tmpstrings_idx = 0;
+
+    return result;
+}
+
 jrk_Arena
 jrk_arena_create(u64 n)
 {