From 84a59ae28b1c5cf4b7d0afae49fa3e64b39b98a2 Mon Sep 17 00:00:00 2001
From: Alex Xu <alex_y_xu@yahoo.ca>
Date: Sun, 30 Mar 2014 13:43:33 -0400
Subject: add configure

---
 .gitignore |  1 +
 Makefile   |  4 +---
 README.rst | 16 ++++++++--------
 configure  | 64 ++++++++++++++++++++++++++++++++++++++------------------------
 4 files changed, 49 insertions(+), 36 deletions(-)

diff --git a/.gitignore b/.gitignore
index de34822..a7e93a4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@
 /ast2json/*.rpyc
 
 # generated files
+/Makefile.inc
 /www/js/all.min.js*
 /node_modules
 
diff --git a/Makefile b/Makefile
index adfaf4e..81f9d59 100644
--- a/Makefile
+++ b/Makefile
@@ -75,7 +75,6 @@ AJSON := $(JSON) $(JSONGZ)
 # FIXME
 json: $(AJSON)
 
-# the rules here are NOT BROKEN. think about it.
 %.json.i: ast2json/rpyc2json.py %.rpyc
 	$^ $@
 
@@ -139,8 +138,7 @@ audio: $(CAUDIO)
 
 PNG := $(shell find www/dump -name '*.png' ! -name 'ctc_strip.png')
 JPG := $(shell find www/dump -name '*.jpg')
-WEBP := $(PNG:.png=.webp) \
-        $(JPG:.jpg=.webp)
+WEBP := $(PNG:.png=.webp) $(JPG:.jpg=.webp)
 CTC_ANIM_SRC := www/dump/ui/ctc_strip.png
 CTC_ANIM_MORE_TMP := www/dump/ui/ctc_strip-1.png \
                      www/dump/ui/ctc_strip-2.png www/dump/ui/ctc_strip-3.png \
diff --git a/README.rst b/README.rst
index facaf3f..950e6b9 100644
--- a/README.rst
+++ b/README.rst
@@ -24,7 +24,7 @@ Requirements
 - cwebp and webpmux from libwebp
 - convert from ImageMagick
 - apngasm
-- Node.js, npm
+- Node.js, npm for uglifyjs
 
 Recommended
 '''''''''''
@@ -36,15 +36,15 @@ Recommended
 - jpegtran
 - nginx
 - pngquant
-- zopfli
+- zopfli and zopflipng
 
 Build steps
 -----------
 
 0. Get Katawa Shoujo, install prerequisites. For guidance on Ubuntu, see .travis.sh.
-1. Copy \*.rpyc from Katawa Shoujo/game into unrpyc/ directory.
-2. Extract files from Katawa Shoujo/game/data.rpa with an rpa extractor, e.g. unrpa. Put files in www/dump.
-3. Install prerequisites, download DeflOpt and defluff and place exes in this directory.
+1. Copy \*.rpyc from Katawa Shoujo/game into ast2json/ directory.
+2. Extract files from Katawa Shoujo/game/data.rpa to www/dump/ with an rpa extractor, like rpatool or unrpa.
+3. Install prerequisites.
 4. Run ./configure.
 5. Run make.
 6. Run nginx.sh to start nginx, then navigate to localhost:8080 in your browser.
@@ -55,10 +55,10 @@ Disabling unused conversions
 ----------------------------
 
 To reduce programs and build time required, some conversions can be disabled.
-Defining MINIMAL as an environment variable will disable the safe ones.
+Passing --minimal to configure will disable the safe ones.
 
-Alternatively, specific conversions can be disabled by passing ``PROGRAM=`` on the command line, i.e. leaving it undefined.
-See the Makefile for more information.
+Alternatively, specific conversions can be disabled by passing --disable-conversion on the command line.
+See ``./configure --help`` for more information.
 
 Reducing disk usage
 -------------------
diff --git a/configure b/configure
index e5c7fe7..1db6e1e 100755
--- a/configure
+++ b/configure
@@ -1,55 +1,69 @@
 #!/bin/bash
 
-set -e
-
-OUT=Makefile.inc
-
-> "${OUT}"
-
 checking() {
   printf "checking for %s... " "$1" >&2
 }
 
 check() {
-  checking="$1"
-  shift
-  var="${VAR:-${checking^^}}"
+  checking "$1"
+  var="${VAR:-${1^^}}"
   cmd="${!var}"
+  : ${cmd:=${1}}
+  shift
   varflags="${var}FLAGS"
   varflags="$@ ${!varflags}"
-  if [[ -z "${cmd}" ]]; then
-    cmd="${checking}"
-  fi
   get=$(command -v "${cmd}")
   e=$?
   if [[ -n "$get" ]]; then
+    if [[ -z "$NO_RUN" ]]; then
+      ${get} -h >/dev/null 2>&1
+      e=$?
+      if (( $e )); then
+        echo unusable, returned $e
+        return $e
+      fi
+    fi
+    declare -g "$var=$get"
     echo ${get}
+    # intentionally stripping whitespace
     echo ${var} := ${get} ${varflags} >> "${OUT}"
+  else
+    echo no
   fi
   return $e
 }
 
 rcheck() {
-  checking "$1"
-  if ! check "$@"; then
-    echo no
-    return 1
-  fi
+  check "$@" || exit
 }
 
-ocheck() {
-  rcheck "$@" || true
+fcheck() {
+  for f in $3; do
+    checking "$f $1 support in ffmpeg"
+    if grep -Eq "^ $2 $f " <<< "$4"; then
+      echo yes
+    else
+      echo no
+      exit 1
+    fi
+  done
 }
 
-checking "zopfli or gzip"
-VAR=GZIP check zopfli || check gzip -9
+OUT=Makefile.inc
+> "${OUT}"
 
-rcheck apngasm
+VAR=GZIP rcheck zopfli || rcheck gzip -9
+NO_RUN=1 rcheck apngasm
 rcheck convert
 rcheck cwebp -quiet -alpha_cleanup -m 6
 rcheck ffmpeg -v warning -y
+F=$($FFMPEG -formats 2>&1)
+fcheck demuxing "D." "matroska,webm ogg wav yuv4mpegpipe" "$F"
+fcheck muxing ".E" "ipod mp4 ogg wav webm yuv4mpegpipe" "$F"
+fcheck decoding ".{6}" "mpeg4 rawvideo pcm_s16le vorbis" "$($FFMPEG -decoders 2>&1)"
+fcheck encoding ".{6}" "libx264 rawvideo libtheora libvpx libvpx-vp9 libfdk_aac libopus pcm_s16le" "$($FFMPEG -encoders 2>&1)"
 rcheck npm --quiet
 rcheck webpmux
-ocheck defluff
-ocheck pngquant
-ocheck zopflipng
+NO_RUN=1 check defluff
+check pngquant
+check zopflipng
-- 
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