From eb90a60afe0ee5aa6c4e5716946d4735747a857f Mon Sep 17 00:00:00 2001
From: pierre <pierre@freepascal.org>
Date: Wed, 18 Apr 2012 10:31:29 +0000
Subject: [PATCH]  New test for sysnr.inc system error numbers

git-svn-id: trunk@20914 -
---
 .gitattributes                  |   1 +
 rtl/unix/scripts/check_errno.sh | 129 ++++++++++++++++++++++++++++++++
 2 files changed, 130 insertions(+)
 create mode 100755 rtl/unix/scripts/check_errno.sh

diff --git a/.gitattributes b/.gitattributes
index 0d1f7d0820..04abd496c1 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -8375,6 +8375,7 @@ rtl/unix/oscdeclh.inc svneol=native#text/plain
 rtl/unix/ports.pp svneol=native#text/plain
 rtl/unix/printer.pp svneol=native#text/plain
 rtl/unix/scripts/README svneol=native#text/plain
+rtl/unix/scripts/check_errno.sh svneol=native#text/plain
 rtl/unix/scripts/check_sys.sh svneol=native#text/plain
 rtl/unix/serial.pp svneol=native#text/plain
 rtl/unix/settimeo.inc svneol=native#text/plain
diff --git a/rtl/unix/scripts/check_errno.sh b/rtl/unix/scripts/check_errno.sh
new file mode 100755
index 0000000000..0411b1bab4
--- /dev/null
+++ b/rtl/unix/scripts/check_errno.sh
@@ -0,0 +1,129 @@
+#!/usr/bin/env bash
+
+# Small script to test fpc to system error numbers
+
+if [ "$1" == "verbose" ] ; then
+  verbose=1
+  echo "Being verbose"
+  shift
+else
+  verbose=0
+fi
+
+# Location of error number in system header
+
+errno_header="/usr/include/asm-generic/errno-base.h /usr/include/asm-generic/errno.h"
+errno_include=./errno.inc
+
+# Sustitution made to pass from fpc syscall number
+# to system define 
+fpc_errno_prefix=ESysE
+errno_prefix=E
+
+# Test C file to grab all loaded headers
+cat > test-errno.c <<EOF
+#include <errno.h>
+
+int
+main ()
+{
+  return 0;
+}
+EOF
+
+# Default C compiler is gcc
+# Can be overwritten by setting CC variable
+# But I don't know if other compilers also generate
+# .i files with --save-temps option
+if [ "$CC" == "" ] ; then
+  CC=gcc
+fi
+
+# Use gcc with --save-temps option to create .i file
+$CC --save-temps -o test-errno ./test-errno.c
+# list of errno.h headers listed
+errno_headers=` sed -n "s:.*\"\(.*\.h\)\".*:\1:p" test-errno.i |sort | uniq`
+echo "Headers found are \"$errno_headers\""
+
+if [ "$errno_headers" != "" ] ; then
+  errno_header="$errno_headers"
+fi
+
+
+# You should only need to change the variables above
+
+sed -n "s:^[ \t]*${fpc_errno_prefix}\\([_a-zA-Z0-9]*\\)[ \t]*=[ \t]*\\([0-9]*\\).*:check_errno_number ${errno_prefix}\1 \2:p" ${errno_include} > check_errno_list.sh
+sed -n "s:#define[ \t]*${errno_prefix}\\([_a-zA-Z0-9]*\\)[ \t][ \t]*\\([0-9]*\\).*:check_reverse_errno_number ${fpc_errno_prefix}\1 \2:p" ${errno_header} > check_reverse_errno_list.sh
+
+function check_errno_number ()
+{
+  sys=$1
+  value=$2
+  if [ $verbose -ne 0 ] ; then
+    echo Testing $sys value $value
+  fi
+  # Remember value of this constant
+  eval ${sys}=${value}
+
+  found=`sed -n "/#define[ \t][ \t]*${sys}[^A-Za-z0-9_]/p" ${errno_header}`
+  val=`sed -n "s:#define[ \t][ \t]*${sys}[^A-Za-z0-9_][^A-Za-z0-9_]*\([0-9]*\).*:\1:p" ${errno_header}`
+  extval=`sed -n "s:#define[ \t][ \t]*${sys}[^A-Za-z0-9_][^A-Za-z0-9_]*\([0-9A-Za-z_]*\).*:\1:p" ${errno_header}`
+  if [ $verbose -ne 0 ] ; then
+    echo Test for $sys found \"${found}\" \"${value}\" \"${val}\"
+  fi
+  if [ "${val}" == "${value}" ] ; then
+    if [ $verbose -ne 0 ] ; then
+      echo ${sys} value ${val} is correct
+    fi
+  else
+    if [ "${val}" == "" ] ; then
+      foundvalue=`sed -n "/#define.*[^A-Za-z0-9_]${value}$/p" ${errno_header}`
+      if [ "${foundvalue}" == "" ] ; then
+        foundvalue=`sed -n "s:\/\* ${value} is compa: ${value} is compa:p" ${errno_header}`
+      fi
+    fi
+    if [ "$extval" != "" ] ; then
+      eval indirectval=\$$extval
+      echo "indirectval =\"$indirectval\""
+      if [ "$indirectval" != "$value" ] ; then
+        echo problem for ${sys} expected ${value}, line is \"${found}\", val found is \"${indirectval}\"
+      else
+        echo "$sys is defined as $extval which is $indirectval as expected $value"
+      fi
+    else
+      problem for ${sys} expected ${value}, line is \"${found}\", val found is \"${val}\"
+    fi
+  fi
+}
+
+addtoerrno=0
+errnonew=./errno-new.inc
+
+function check_reverse_errno_number ()
+{
+  errname=$1
+  errvalue=$2
+  found=`grep -i -w $1 ${errno_include}`
+  if [ "${found}" == "" ] ; then
+    echo "Error ${errname}, value ${errvalue}, not in ${errno_include} file"
+    if [ $addtoerrno -eq 0 ] ; then
+      addtoerrno=1
+      echo "{ List of missing system error number found in $errno_header }" > $errnonew
+    fi
+    echo "  $errname = $errvalue;" >> $errnonew
+  fi
+}
+
+set -f
+echo "Checking all entries of ${errno_include} file"
+source ./check_errno_list.sh
+
+echo "Checking all defines from \"$errno_header\""
+source ./check_reverse_errno_list.sh
+
+if [ $addtoerrno -eq 1 ] ; then
+  echo " Missing error number found"
+  echo " New values are in \"$errnonew\"
+  echo You might want to add these lines to \"$errno\""
+fi
+