Reduce sprintf() calls. Remove mrb_int_to_str() and MRB_INT_FORMAT.

2 files changed, 28 insertions, 9 deletions

diff --git a/src/dump.c b/src/dump.c
index e8d96c570..b97b38dc2 100644
--- a/src/dump.c
+++ b/src/dump.c
@@ -10,6 +10,7 @@
 
 #include "mruby/string.h"
 #include "mruby/irep.h"
+#include "mruby/numeric.h"
 
 static const unsigned char def_rite_binary_header[] =
   RITE_FILE_IDENFIFIER
@@ -241,8 +242,8 @@ get_pool_block_size(mrb_state *mrb, mrb_irep *irep, int type)
 
     switch (mrb_type(irep->pool[pool_no])) {
     case MRB_TT_FIXNUM:
-      len = mrb_int_to_str( buf, mrb_fixnum(irep->pool[pool_no]));
-      size += (uint32_t)len;
+      str = mrb_fix2str(mrb, irep->pool[pool_no], 10);
+      size += (uint32_t)RSTRING_LEN(str);
       break;
     case MRB_TT_FLOAT:
       len = mrb_float_to_str( buf, mrb_float(irep->pool[pool_no]));
@@ -358,7 +359,9 @@ write_pool_block(mrb_state *mrb, mrb_irep *irep, char *buf, int type)
 
     switch (mrb_type(irep->pool[pool_no])) {
     case MRB_TT_FIXNUM:
-      len = mrb_int_to_str(char_buf, mrb_fixnum(irep->pool[pool_no]));
+      str = mrb_fix2str(mrb, irep->pool[pool_no], 10);
+      memcpy(char_buf, RSTRING_PTR(str), RSTRING_LEN(str));
+      len = RSTRING_LEN(str);
       break;
 
     case MRB_TT_FLOAT:
diff --git a/src/string.c b/src/string.c
index 6afb4f6ca..6e0c8d1a2 100644
--- a/src/string.c
+++ b/src/string.c
@@ -14,6 +14,7 @@
 #include "mruby/range.h"
 #include "mruby/array.h"
 #include "mruby/class.h"
+#include "mruby/numeric.h"
 #include <stdio.h>
 #include "re.h"
 
@@ -2552,9 +2553,16 @@ mrb_str_dump(mrb_state *mrb, mrb_value str)
           *q++ = c;
       }
       else {
-          *q++ = '\\';
-          sprintf(q, "%03o", c&0xff);
-          q += 3;
+        mrb_value octstr;
+        mrb_value chr;
+        const char *ptr;
+        int len;
+        chr = mrb_fixnum_value(c & 0xff);
+        octstr = mrb_fix2str(mrb, chr, 8);
+        ptr = mrb_str_body(octstr, &len);
+        memcpy(q, "\\000", 4);
+        memcpy(q + 4 - len, ptr, len);
+        q += 4;
       }
     }
     *q++ = '"';
@@ -2637,9 +2645,17 @@ mrb_str_inspect(mrb_state *mrb, mrb_value str)
           continue;
       }
       else {
-	int n = sprintf(buf, "\\%03o", c & 0377);
-	mrb_str_buf_cat(mrb, result, buf, n);
-          continue;
+        mrb_value octstr;
+        mrb_value chr;
+        const char *ptr;
+        int len;
+        chr = mrb_fixnum_value(c & 0xff);
+        octstr = mrb_fix2str(mrb, chr, 8);
+        ptr = mrb_str_body(octstr, &len);
+        memcpy(buf, "\\000", 4);
+        memcpy(buf + 4 - len, ptr, len);
+        mrb_str_buf_cat(mrb, result, buf, 4);
+        continue;
       }
     }
     mrb_str_buf_cat(mrb, result, "\"", 1);