1 files changed, 28 insertions, 22 deletions
diff --git a/installer/install-cobol-language-support.cmd b/installer/install-cobol-language-support.cmd
index e1b6090..76c1a2c 100644
--- a/installer/install-cobol-language-support.cmd
+++ b/installer/install-cobol-language-support.cmd
@@ -1,22 +1,28 @@
-@echo off
-
-setlocal
-
-cd /d %~dp0
-
-set server_dir=..\servers\cobol-language-support
-if exist %server_dir% rd /Q /S "%server_dir%"
-md "%server_dir%"
-cd /d "%server_dir%"
-
-set version=0.9.1
-set url=https://github.com/eclipse/che-che4z-lsp-for-cobol/releases/download/%version%/cobol-language-support-%version%.vsix
-curl -LO "%url%"
-unzip "cobol-language-support-%version%.vsix"
-
-echo @echo off ^
-
-java "-Dline.speparator=\r\n" -jar "%%~dp0\extension\server\lsp-service-cobol-%version%.jar" pipeEnabled ^
-
-> cobol-language-support.cmd
-
+@echo off
+
+where unzip1 2>NUL
+if %ERRORLEVEL% neq 0 (
+    echo unzip command required
+    exit /b 1
+)
+
+setlocal
+
+cd /d %~dp0
+
+set server_dir=..\servers\cobol-language-support
+if exist %server_dir% rd /Q /S "%server_dir%"
+md "%server_dir%"
+cd /d "%server_dir%"
+
+set version=0.9.1
+set url=https://github.com/eclipse/che-che4z-lsp-for-cobol/releases/download/%version%/cobol-language-support-%version%.vsix
+curl -LO "%url%"
+unzip "cobol-language-support-%version%.vsix"
+
+echo @echo off ^
+
+java "-Dline.speparator=\r\n" -jar "%%~dp0\extension\server\lsp-service-cobol-%version%.jar" pipeEnabled ^
+
+> cobol-language-support.cmd
+