Add color for warning and errors

diff --git a/fgen.sh b/fgen.sh
index 5634d6a..0003fcd 100755 (executable)
--- a/fgen.sh
+++ b/fgen.sh
@@ -37,12 +37,28 @@ case ${OSTYPE} in
         ;;
 esac
 
+COLOR_ERR="\033[0;31m"
+COLOR_WARN="\033[0;33m"
+COLOR_NONE="\033[0m"
+
+function log_info() {
+    echo -e "${COLOR_NONE}${*}"
+}
+
 function log_dbg() {
     if [ x"${debug}" = x"1" ]; then
         echo "${*}"
     fi
 }
 
+function log_warn() {
+    echo -e "${COLOR_WARN}${*}${COLOR_NONE}"
+}
+
+function log_err() {
+    echo -e "${COLOR_ERR}${*}${COLOR_NONE}"
+}
+
 # Arg1: layer
 function get_size()
 {
@@ -221,7 +237,7 @@ if [ $# -gt 1 ]; then
 fi
 
 if [ ! -f "${1}" ]; then
-    echo "Error: PSD source file not found"
+    log_err "Error: PSD source file not found"
     exit 1
 fi
 
@@ -254,7 +270,7 @@ if [ ${trames} -eq 1 ]; then
     log_dbg "Background size: ${size}"
 
     if [ x"${size}" = x"" ]; then
-        echo "Error: background layer not found"
+        log_err "Error: background layer not found"
         exit 1
     fi
 
@@ -322,9 +338,9 @@ if [ ${trames} -eq 1 ]; then
                 expected_nf=$((${oldnf} + 1))
 
                 if [ ${expected_nf} -ne ${nf} ]; then
-                    echo "Warning: non-sequential frame sequence: ${nf}"
-                    echo "  previous: ${oldnf}"
-                    echo "  expected: ${expected_nf}"
+                    log_warn "Warning: non-sequential frame sequence: ${nf}"
+                    log_warn "  previous: ${oldnf}"
+                    log_warn "  expected: ${expected_nf}"
                     insert_empty_frames ${expected_nf} $((${nf} -1))
                 fi
             fi