1 files changed, 69 insertions, 0 deletions
diff --git a/ruby_1_8_6/ext/dl/sample/libc.rb b/ruby_1_8_6/ext/dl/sample/libc.rb
new file mode 100644
index 0000000000..a1f6fbe543
--- /dev/null
+++ b/ruby_1_8_6/ext/dl/sample/libc.rb
@@ -0,0 +1,69 @@
+require "dl/import"
+require "dl/struct"
+
+module LIBC
+  extend DL::Importable
+
+  begin
+    dlload "libc.so.6"
+  rescue
+    dlload "libc.so.5"
+  end
+
+  extern "int atoi(char*)"
+  extern "ibool isdigit(int)"
+  extern "int gettimeofday(struct timeval *, struct timezone *)"
+  extern "char* strcat(char*, char*)"
+  extern "FILE* fopen(char*, char*)"
+  extern "int fclose(FILE*)"
+  extern "int fgetc(FILE*)"
+  extern "int strlen(char*)"
+  extern "void qsort(void*, int, int, void*)"
+
+  def str_qsort(ary, comp)
+    len = ary.length
+    r,rs = qsort(ary, len, DL.sizeof('P'), comp)
+    return rs[0].to_a('S', len)
+  end
+
+  Timeval = struct [
+    "long tv_sec",
+    "long tv_usec",
+  ]
+
+  Timezone = struct [
+    "int tz_minuteswest",
+    "int tz_dsttime",
+  ]
+
+  def my_compare(ptr1, ptr2)
+    ptr1.ptr.to_s <=> ptr2.ptr.to_s
+  end
+  COMPARE = callback("int my_compare(char**, char**)")
+end
+
+
+$cb1 = DL.callback('IPP'){|ptr1, ptr2|
+  str1 = ptr1.ptr.to_s
+  str2 = ptr2.ptr.to_s
+  str1 <=> str2
+}
+
+p LIBC.atoi("10")
+
+p LIBC.isdigit(?1)
+
+p LIBC.isdigit(?a)
+
+p LIBC.strcat("a", "b")
+
+ary = ["a","c","b"]
+ptr = ary.to_ptr
+LIBC.qsort(ptr, ary.length, DL.sizeof('P'), LIBC::COMPARE)
+p ptr.to_a('S', ary.length)
+
+tv = LIBC::Timeval.malloc
+tz = LIBC::Timezone.malloc
+LIBC.gettimeofday(tv, tz)
+
+p Time.at(tv.tv_sec)