Fixing docker build (#87)

- Speedup and simplify docker build
- Fix compiler errors when building with clang-15
- Update readme on building with docker
- Minor reformatting (using existing `.clang-format` file)

Dockerfile

@@ -24,17 +24,12 @@ RUN apt-get -y install build-essential
 # directory with
 # `hyde ./test.hpp -- -x c++ -print-resource-dir`
 
+# FROM base AS full
+
 ENV LLVM_VERSION=15
 
 RUN apt-get -y install clang-${LLVM_VERSION}
-
-# The above doesn't setup libc++ header paths correctly. Currently LLVM-15
-# doesn't install with llvm.sh in docker. So we install LLVM-16 just for
-# the libc++ config!
-
-RUN wget https://apt.llvm.org/llvm.sh
-RUN chmod +x llvm.sh
-RUN ./llvm.sh 16 all
+RUN apt-get -y install libc++-${LLVM_VERSION}-dev
 
 # set clang ${LLVM_VERSION} to be the version of clang we use when clang/clang++ is invoked
 RUN update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-${LLVM_VERSION} 100
@@ -64,3 +59,7 @@ RUN cp ./build/hyde /usr/bin
 # RUN apt-get -y install clang-15
 
 CMD ["./generate_test_files.sh"]
+
+# Experimenting with publishing the container and linking it to the hyde repo:
+
+LABEL org.opencontainers.image.source=https://github.com/adobe/hyde

README.md

@@ -39,9 +39,21 @@
 
 LLVM/Clang are declared as a dependency in the project's `CMakeLists.txt` file, and will be downloaded and made available to the project automatically.
 
-# Using Docker
+# How to run from Docker
 
-You may need to increase your docker resources to build the image.
+```sh
+docker pull ghcr.io/adobe/hyde:latest
+
+docker run --platform linux/x86_64 --mount type=bind,source="$(pwd)",target=/mnt/host \
+    --tty --interactive \
+    ghcr.io/adobe/hyde:latest bash
+```
+
+You can then run the examples as below, except don't prefix `hyde` with `./`.
+
+# Building the Docker image
+
+You may need to increase your docker resources to build the image. (2.0.1 successfully built with 16GB RAM and 4GB swap)
 
 ```sh
 docker build --tag hyde .
@@ -51,6 +63,20 @@ docker run --platform linux/x86_64 --mount type=bind,source="$(pwd)",target=/mnt
     hyde bash
 ```
 
+# Publishing the docker image (requires write access to the `adobe` GitHub organization)
+
+Instructions for publishing a GitHub package can be found [here](https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-container-registry).
+Instructions for associating the with the `adobe/hyde` repository can be found [here](https://docs.github.com/en/packages/learn-github-packages/connecting-a-repository-to-a-package#connecting-a-repository-to-a-container-image-using-the-command-line).
+
+```sh
+VERSION=2.0.1
+docker tag hyde ghcr.io/adobe/hyde:$VERSION
+docker tag hyde ghcr.io/adobe/hyde:latest
+docker push ghcr.io/adobe/hyde:$VERSION
+docker push ghcr.io/adobe/hyde:latest
+```
+
+
 # Parameters and Flags
 
 There are several modes under which the tool can run:

sources/autodetect.cpp

@@ -13,9 +13,16 @@ written permission of Adobe.
 #include "autodetect.hpp"
 
 // stdc++
+#include <algorithm>
 #include <array>
-#include <random>
+#include <cstdio>
 #include <fstream>
+#include <iterator>
+#include <memory>
+#include <random>
+#include <string>
+#include <utility>
+#include <vector>
 
 /**************************************************************************************************/
 
@@ -28,9 +35,11 @@ std::vector<std::string> split(const char* p, std::size_t n) {
     std::vector<std::string> result;
 
     while (p != end) {
-        while (p != end && *p == '\n') ++p; // eat newlines
+        while (p != end && *p == '\n')
+            ++p; // eat newlines
         auto begin = p;
-        while (p != end && *p != '\n') ++p; // eat non-newlines
+        while (p != end && *p != '\n')
+            ++p; // eat non-newlines
         result.emplace_back(begin, p);
     }
 
@@ -78,22 +87,26 @@ std::string trim_back(std::string s) {
 
 /**************************************************************************************************/
 
-std::string chomp(std::string src) {
-    return trim_back(trim_front(std::move(src)));
-}
+std::string chomp(std::string src) { return trim_back(trim_front(std::move(src))); }
 
 /**************************************************************************************************/
 
 std::string exec(const char* cmd) {
-    std::array<char, 128> buffer;
-    std::string result;
-    std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd, "r"), pclose);
+    struct pclose_t {
+        void operator()(std::FILE* p) const { (void)pclose(p); }
+    };
+    std::unique_ptr<std::FILE, pclose_t> pipe{popen(cmd, "r")};
+
     if (!pipe) {
         throw std::runtime_error("popen() failed!");
     }
+
+    std::array<char, 128> buffer;
+    std::string result;
     while (fgets(buffer.data(), buffer.size(), pipe.get())) {
         result += buffer.data();
     }
+
     return chomp(std::move(result));
 }
 
@@ -105,7 +118,8 @@ std::vector<std::filesystem::path> autodetect_include_paths() {
     auto temp_dir = std::filesystem::temp_directory_path();
     auto temp_out = (temp_dir / ("hyde_" + v + ".tmp")).string();
     auto temp_a_out = (temp_dir / ("deleteme_" + v)).string();
-    auto command = "echo \"int main() { }\" | clang++ -x c++ -v -o " + temp_a_out + " - 2> " + temp_out;
+    auto command =
+        "echo \"int main() { }\" | clang++ -x c++ -v -o " + temp_a_out + " - 2> " + temp_out;
 
     auto command_result = std::system(command.c_str());
     (void)command_result; // TODO: handle me
@@ -119,14 +133,14 @@ std::vector<std::filesystem::path> autodetect_include_paths() {
 
     if (paths_begin != end(lines) && paths_end != end(lines)) {
         lines.erase(paths_end, end(lines));
-        lines.erase(begin(lines), next(paths_begin));
+        lines.erase(begin(lines), std::next(paths_begin));
 
         // lines.erase(std::remove_if(begin(lines), end(lines), [](auto& s){
         //     return s.find(".sdk/") != std::string::npos;
         // }), end(lines));
 
         // Some of the paths contain cruft at the end. Filter those out, too.
-        std::transform(begin(lines), end(lines), std::back_inserter(result), [](auto s){
+        std::transform(begin(lines), end(lines), std::back_inserter(result), [](auto s) {
             static const std::string needle_k{" (framework directory)"};
             auto needle_pos = s.find(needle_k);
             if (needle_pos != std::string::npos) {