From 2b0ee72ceb309c1ceed97574922ccc1c9d5ae02a Mon Sep 17 00:00:00 2001
From: Alex Helfet <alex.helfet@gmail.com>
Date: Wed, 27 Dec 2017 21:28:15 +0000
Subject: [PATCH] bin/decode_typed can run decode with a type and crate passed
 via environment variables.

Issue #9.
---
 Cargo.lock            |  1 -
 bin/decode_typed      | 49 +++++++++++++++++++++++++++++++++++++++++++
 decode/Cargo.toml     |  1 -
 decode/README.md      | 10 +++++++++
 decode/src/dynamic.rs |  5 -----
 decode/src/main.rs    |  2 +-
 6 files changed, 60 insertions(+), 8 deletions(-)
 create mode 100755 bin/decode_typed
 create mode 100644 decode/README.md
 delete mode 100644 decode/src/dynamic.rs

diff --git a/Cargo.lock b/Cargo.lock
index 48e57cb..c540f11 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -75,7 +75,6 @@ dependencies = [
  "clap 2.29.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "derive-error 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "framed 0.1.4",
- "framed_test_type 0.1.0",
 ]
 
 [[package]]
diff --git a/bin/decode_typed b/bin/decode_typed
new file mode 100755
index 0000000..03ceb10
--- /dev/null
+++ b/bin/decode_typed
@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+set -e
+
+REPO_DIR="$(cd $(dirname ${BASH_SOURCE[0]} )/..; pwd )"
+
+TYPE_CRATE_DIR="${TYPE_CRATE_DIR-${REPO_DIR}/test_type}"
+TYPE_NAME="${TYPE_NAME-framed_test_type::Test}"
+
+echo "TYPE_CRATE_DIR = '${TYPE_CRATE_DIR}'"
+echo "TYPE_NAME = '${TYPE_NAME}'"
+
+TYPE_CRATE_NAME="$(cargo read-manifest --manifest-path "${TYPE_CRATE_DIR}/Cargo.toml" | jq '.name' -r)"
+
+TMP_DIR="${REPO_DIR}/target/decode_typed/tmp"
+
+mkdir -p "${TMP_DIR}";
+rm -f "${TMP_DIR}/"*;
+
+# TODO: Move dynamic.rs to TMP_DIR, both here and in the include! in main.rs.
+export FRAMED_DECODE_DYNAMIC_RS="${TMP_DIR}/dynamic_${TYPE_NAME}.rs";
+cat > "${FRAMED_DECODE_DYNAMIC_RS}" <<EOF
+// Generated by framed-rs/bin/decode_typed, your changes will be overwritten.
+extern crate ${TYPE_CRATE_NAME};
+use ${TYPE_NAME} as UserType;
+static USER_TYPE_NAME: &'static str = "${TYPE_NAME}";
+EOF
+
+
+cargo rustc \
+      --manifest-path "${TYPE_CRATE_DIR}/Cargo.toml" \
+      --lib \
+      -v \
+      -- \
+      -o "${TMP_DIR}/${TYPE_CRATE_NAME}.rlib" \
+      < /dev/null;
+TYPE_CRATE_RLIB="$(ls "${TMP_DIR}"/lib${TYPE_CRATE_NAME}*.rlib)";
+cargo rustc \
+      --manifest-path "${REPO_DIR}/decode/Cargo.toml" \
+      --bin framed_decode \
+      -v \
+      -- \
+      -o "${TMP_DIR}/decode" \
+      --extern ${TYPE_CRATE_NAME}="${TYPE_CRATE_RLIB}" \
+      --emit obj \
+      < /dev/null;
+DECODE_PATH="$(find "${TMP_DIR}/decode"* -executable -type f)";
+echo "";
+echo "";
+${DECODE_PATH};
diff --git a/decode/Cargo.toml b/decode/Cargo.toml
index 3566ad0..f9b8401 100644
--- a/decode/Cargo.toml
+++ b/decode/Cargo.toml
@@ -20,7 +20,6 @@ branch = "master"
 clap = "^2.29.0"
 derive-error = "^0.0.4"
 framed = { path = "../framed" }
-framed_test_type = { path = "../test_type" }
 
 [features]
 default = ["typed"]
diff --git a/decode/README.md b/decode/README.md
new file mode 100644
index 0000000..3076510
--- /dev/null
+++ b/decode/README.md
@@ -0,0 +1,10 @@
+# `framed_decode`
+
+TODO.
+
+## framed-rs/bin/decode_typed
+
+TODO.
+
+Note: you must install [`jq`][jq] and have it on your path.
+[jq]: https://stedolan.github.io/jq/
diff --git a/decode/src/dynamic.rs b/decode/src/dynamic.rs
deleted file mode 100644
index 22adc20..0000000
--- a/decode/src/dynamic.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-// TODO: Generate this.
-
-extern crate framed_test_type;
-use framed_test_type::Test as UserType;
-static USER_TYPE_NAME: &'static str = "framed_test_type::Test";
diff --git a/decode/src/main.rs b/decode/src/main.rs
index 4caf8ca..3d5ba67 100644
--- a/decode/src/main.rs
+++ b/decode/src/main.rs
@@ -6,7 +6,7 @@ extern crate clap;
 extern crate derive_error;
 extern crate framed;
 
-include!("dynamic.rs");
+include!(env!("FRAMED_DECODE_DYNAMIC_RS"));
 
 mod error;
 use error::{Error, Result};