TODO: empty frames doc

[fgen.git] / fgen.sh

diff --git a/fgen.sh b/fgen.sh
index f2c961f..8a700c7 100755 (executable)
--- a/fgen.sh
+++ b/fgen.sh
@@ -21,6 +21,8 @@ dry_run=0
 
 SED=sed
 
+F_FMT="%04d"
+
 # When reading a file line by line, if a command inside the loop
 # also reads stdin, it can exhaust the input file.
 # -nostdin: disable ffmpeg interaction on standard input:
@@ -35,12 +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()
 {
@@ -111,6 +129,16 @@ function get_dup_to()
     echo "${token}"
 }
 
+# Generate frame index name with leading zeroes:
+# Arg1: frame number
+function get_frame_name()
+{
+    local index
+
+    index=$(printf "${F_FMT}" ${1})
+    echo "${dest}/${group}-f${index}.png"
+}
+
 # Arg1: start frame
 # Arg1: end frame
 function insert_empty_frames()
@@ -118,13 +146,17 @@ function insert_empty_frames()
     local w
     local start
     local end
+    local wfname
 
     start=${1}
     end=${2}
 
     for w in $(seq ${start} ${end}); do
         log_dbg "New frame ID: ${w} (empty)"
-        cp ${dest}/background.png ${dest}/${group}-f${w}.png
+
+        wfname=$(get_frame_name ${w})
+
+        cp ${dest}/background.png ${wfname}
     done
 }
 
@@ -205,7 +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
 
@@ -238,7 +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
 
@@ -282,7 +314,7 @@ if [ ${trames} -eq 1 ]; then
             fi
 
             group="${ng}"
-            log_dbg "New group: ${ng}"
+            log_info "New group: ${ng}"
 
             nf=""
             oldnf=""
@@ -306,21 +338,23 @@ 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
 
             log_dbg "New frame ID: ${nf}"
 
+            fname=$(get_frame_name ${nf})
+
             if [ ${dry_run} -eq 1 ]; then
-                touch ${dest}/${group}-f${nf}.png
+                touch ${fname}
             else
                 convert -colorspace sRGB -page +0+0 ${dest}/background.png \
                         ${files} -background none -layers merge \
-                        ${dest}/${group}-f${nf}.png
+                        PNG32:${fname}
             fi
 
             if [ x"${dup_from}" != x"" ]; then
@@ -331,8 +365,12 @@ if [ ${trames} -eq 1 ]; then
                 for w in $(seq ${dup_start} ${dup_to}); do
                     log_dbg "New frame ID: ${w} (duplicate)"
 
+                    wfname=$(get_frame_name ${w})
+
                     # Use symlink???
-                    cp ${dest}/${group}-f${nf}.png ${dest}/${group}-f${w}.png
+                    cp ${fname} ${wfname}
+
+                    nf=${w}
                 done
             fi