init commit

.gitignore

@@ -3,6 +3,8 @@
 .DS_Store
 .AppleDouble
 .LSOverride
+buildj
+*.tmp.c
 
 # Icon must end with two \r
 Icon

buildj.v

@@ -0,0 +1,26 @@
+module main
+
+// import http
+// import os
+// import time
+// import json
+import buildj_util
+//import termcolor
+
+// https://bitbucket.org/hatterjiang/archived-study_v/src/master/buildjs.v
+const (
+	BUILDJ_NAME = 'buildj.v'
+    BUILDJ_VERSION = '0.1'
+    BUILD_JSON = 'build.json'
+)
+
+fn main() {
+	buildj_util.check_os()
+	show_buildjs_head()
+	println(buildj_util.get_readable_size(1000000))
+}
+
+fn show_buildjs_head() {
+    println('${BUILDJ_NAME} - version: ${BUILDJ_VERSION}')
+}
+

buildj_util/buildj_util.v

@@ -0,0 +1,38 @@
+module buildj_util
+
+const (
+    ZERO = 0
+    KB = 1024
+    MB = KB * KB
+)
+
+pub fn check_os() {
+    $if linux {
+       return 
+    }
+    $if mac {
+        return
+    }
+    println('[ERROR] Not supported OS.')
+    exit(1)
+}
+
+pub fn get_readable_size(size int) string {
+    if size <= ZERO {
+        return '${size} Byte'
+    } else if size < KB {
+        return '${size} Bytes'
+    } else if size < MB {
+        size_in_kb := f64_str_2f(f64(size) / f64(KB))
+        return '${size_in_kb} KB'
+    } else {
+        size_in_mb := f64_str_2f(f64(size) / f64(MB))
+        return '${size_in_mb} MB'
+    }
+}
+
+fn f64_str_2f(d f64) string {
+    buf := malloc(sizeof(f64) * 5 + 1)
+    C.sprintf(buf, '%.2f', d)
+    return tos(buf, C.strlen(buf))
+}