add st alias for status

embedding Ruby in C did not go so well

.gitignore

@@ -1,3 +1,8 @@
-/.lock-waf*
-/.waf*
-/build/
+/.bundle/
+/.yardoc
+/_yardoc/
+/coverage/
+/doc/
+/pkg/
+/spec/reports/
+/tmp/

Gemfile

@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in svi.gemspec
+gemspec

Gemfile.lock

@@ -0,0 +1,22 @@
+PATH
+  remote: .
+  specs:
+    svi (0.1.0)
+      yawpa (~> 1.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    rake (10.4.2)
+    yawpa (1.3.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bundler (~> 1.10)
+  rake (~> 10.0)
+  svi!
+
+BUNDLED WITH
+   1.10.6

LICENSE.txt

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2018 Josh Holtrop
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Makefile

@@ -1,2 +0,0 @@
-all:
-	./waf build

README.md

@@ -0,0 +1,41 @@
+# Svi
+
+Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/svi`. To experiment with that code, run `bin/console` for an interactive prompt.
+
+TODO: Delete this and the text above, and describe your gem
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+```ruby
+gem 'svi'
+```
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install svi
+
+## Usage
+
+TODO: Write usage instructions here
+
+## Development
+
+After checking out the repo, run `bin/setup` to install dependencies. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
+
+To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/svi.
+
+
+## License
+
+The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).
+

Rakefile

@@ -0,0 +1 @@
+require "bundler/gem_tasks"

configure

@@ -1,2 +0,0 @@
-#!/bin/sh
-exec ./waf configure "$@"

exe/svi

@@ -0,0 +1,9 @@
+#!/usr/bin/env ruby
+
+require "svi"
+
+args = ARGV.dup
+
+cli = Svi::Cli.new
+
+exit(cli.run(args))

ext/svi/extconf.rb

@@ -0,0 +1,6 @@
+require "mkmf"
+
+abort("Error: missing curses.h") unless have_header("curses.h")
+abort("Error: missing curses library") unless have_library("curses")
+
+create_makefile "svi/svi"

ext/svi/svi.c

@@ -0,0 +1,30 @@
+#include <ruby.h>
+#include <curses.h>
+
+static int Screen_Width = -1;
+static int Screen_Height = -1;
+
+VALUE Rb_screen_width(void)
+{
+    return INT2FIX(Screen_Width);
+}
+
+VALUE Rb_screen_height(void)
+{
+    return INT2FIX(Screen_Height);
+}
+
+void Init_svi(void)
+{
+    /* Determine screen dimensions. */
+    initscr();
+    getmaxyx(stdscr, Screen_Height, Screen_Width);
+    endwin();
+
+    VALUE svi_module = rb_define_module("Svi");
+    VALUE c_module = rb_define_module_under(svi_module, "C");
+    rb_define_module_function(c_module, "screen_width",
+            Rb_screen_width, 0);
+    rb_define_module_function(c_module, "screen_height",
+            Rb_screen_height, 0);
+}

lib/svi.rb

@@ -0,0 +1,8 @@
+require_relative "svi/ansi"
+require_relative "svi/application"
+require_relative "svi/cli"
+require_relative "svi/config"
+require_relative "svi/svn_runner"
+require_relative "svi/util"
+require_relative "svi/version"
+require "svi/svi"

lib/svi/ansi.rb

@@ -0,0 +1,21 @@
+module Svi
+  module Ansi
+
+    class << self
+
+      def cursor_up(n = 1)
+        "\e[#{n}A"
+      end
+
+      def cursor_back(n = 1)
+        "\e[#{n}D"
+      end
+
+      def erase_cursor_to_eos
+        "\e[J"
+      end
+
+    end
+
+  end
+end

lib/svi/application.rb

@@ -0,0 +1,105 @@
+require "open3"
+
+module Svi
+  class Application
+
+    def initialize
+      @svn_info = {}
+      @config = Config.new(self)
+    end
+
+    def wc_info
+      svn_info(".")
+    end
+
+    def checkout(url, options = {})
+      wc_path =
+        if options[:wc_path]
+          options[:wc_path]
+        elsif url =~ %r{/([^/]+)/trunk$}
+          $1
+        else
+          url.split("/").last
+        end
+      last_checkout_message = ""
+      checked_out_paths = []
+      clear_message = lambda do
+        if last_checkout_message.size > 0
+          clear = ""
+          lines = (last_checkout_message.size + C.screen_width - 1) / C.screen_width
+          if lines > 1
+            clear += Ansi.cursor_up(lines - 1)
+          end
+          clear += Ansi.cursor_back(999)
+          clear += Ansi.erase_cursor_to_eos
+          $stdout.write(clear)
+          last_checkout_message = ""
+        end
+      end
+      start_time = Time.new
+      SvnRunner.run_svn("checkout", [url, wc_path], allow_interactive: true) do |line|
+        if line =~ /^A.{4}(.*)$/
+          path = $1
+          checked_out_paths << path
+          clear_message[]
+          elapsed_time = Time.new - start_time
+          elapsed_time_formatted = Util.format_time(elapsed_time)
+          last_checkout_message = "Checking out #{path} [#{elapsed_time_formatted}]..."
+          $stdout.write(last_checkout_message)
+          $stdout.flush
+        elsif line =~ /^\sU\s{3}/
+          # Ignore the 'U'pdate line of the checkout directory itself.
+        elsif line =~ /^Checked out revision (\d+)/
+          revision = $1
+          clear_message[]
+          n_files = 0
+          n_directories = 0
+          checked_out_paths.uniq.each do |path|
+            if File.directory?(path)
+              n_directories += 1
+            else
+              n_files += 1
+            end
+          end
+          elapsed_time = Time.new - start_time
+          elapsed_time_formatted = Util.format_time(elapsed_time)
+          $stdout.puts "Checked out revision #{revision}: #{n_files} file#{n_files == 1 ? '' : 's'}, #{n_directories} director#{n_directories == 1 ? 'y' : 'ies'} [#{elapsed_time_formatted}]"
+        else
+          clear_message[]
+          $stdout.puts line
+        end
+      end
+      0
+    end
+
+    def status
+      SvnRunner.run_svn("status", []) do |line|
+        if line =~ %r{^([ACDIMRX\?!~ ])[CM ][L ][\+ ][SX ][KOTB ]..(.+)$}
+          action, path = $1, $2
+          if action == "?" and Util.is_path_ignored?(path, @config)
+            # Path is ignored
+          else
+            puts line
+          end
+        end
+      end
+      0
+    end
+
+    private
+
+    def svn_info(path)
+      @svn_info[path] ||= begin
+        info = {}
+        stdout, stderr, status = Open3.capture3("svn", "info", path)
+        stdout.lines.each do |line|
+          if line =~ /^(.*?):\s(.*)$/
+            info[$1] = $2
+          end
+        end
+        info
+      end
+    end
+
+  end
+end

lib/svi/cli.rb

@@ -0,0 +1,80 @@
+require "yawpa"
+
+module Svi
+  class Cli
+
+    ALIASES = {
+      "co" => "checkout",
+      "st" => "status",
+    }
+
+    HELP_TEXT = <<EOS
+Usage: svi [options] <command> [parameters...]
+Global options:
+  --version       show svi version and exit
+  --help, -h      show this help and exit
+
+Commands:
+  checkout/co     check out Subversion URL
+  status/st       show Subversion status
+EOS
+
+    def initialize
+      @application = Application.new
+    end
+
+    def run(params)
+      options = {
+        version: {},
+        help: {short: "h"},
+      }
+      opts, args = Yawpa.parse(params, options, posix_order: true)
+      if opts[:version]
+        puts "svi, version #{Svi::VERSION}"
+        return 0
+      end
+      if opts[:help]
+        puts HELP_TEXT
+        return 0
+      end
+      if args.size < 1
+        $stderr.puts HELP_TEXT
+        return 1
+      end
+      run_subcommand(*args)
+    end
+
+    private
+
+    def run_subcommand(subcommand, *params)
+      if ALIASES[subcommand]
+        subcommand = ALIASES[subcommand]
+      end
+      command_function = "cmd_#{subcommand}".to_sym
+      if private_methods.include?(command_function)
+        __send__(command_function, params)
+      else
+        $stderr.puts "Unknown command #{subcommand}"
+        1
+      end
+    end
+
+    def cmd_checkout(params)
+      options = {}
+      opts, args = Yawpa.parse(params, options, posix_order: true)
+      if args.size < 1
+        $stderr.puts "Error: must specify URL"
+        return 1
+      end
+      url, wc_path = args
+      @application.checkout(url, wc_path: wc_path)
+    end
+
+    def cmd_status(params)
+      options = {}
+      opts, args = Yawpa.parse(params, options, posix_order: true)
+      @application.status
+    end
+
+  end
+end

lib/svi/config.rb

@@ -0,0 +1,47 @@
+module Svi
+  class Config
+
+    def initialize(application)
+      @application = application
+      @ignores = []
+
+      load_global_config
+      load_local_config
+    end
+
+    # Get the ignore patterns.
+    #
+    # @return [Array<String, Proc>]
+    #   Each entry is a pattern or a Proc that returns a list of patterns.
+    def ignores
+      @_ignores ||= @ignores.map do |ignore|
+        if ignore.is_a?(Proc)
+          ignore[]
+        else
+          ignore
+        end
+      end.flatten
+    end
+
+    private
+
+    def load_global_config
+      global_config_path = "#{ENV["HOME"]}/.svi/config"
+      if File.exists?(global_config_path)
+        global_config = File.read(global_config_path)
+        instance_eval(global_config, global_config_path, 1)
+      end
+    end
+
+    def load_local_config
+      if wcrp = @application.wc_info["Working Copy Root Path"]
+        local_config_path = "#{wcrp}/.svn/svi/config"
+        if File.exists?(local_config_path)
+          local_config = File.read(local_config_path)
+          instance_eval(local_config, local_config_path, 1)
+        end
+      end
+    end
+
+  end
+end

lib/svi/svn_runner.rb

@@ -0,0 +1,99 @@
+module Svi
+  module SvnRunner
+
+    # Exception class to indicate an error with executing svn.
+    class SvnExecError < RuntimeError; end
+
+    class << self
+
+      # Run Subversion and yield results linewise.
+      #
+      # @param subcommand [String, nil]
+      #   The svn subcommand to execute (e.g. "ls").
+      # @param args [Array<String>]
+      #   The svn subcommand arguments.
+      # @param options [Hash]
+      #   Optional arguments.
+      # @option options [Array<String>] :global_args
+      #   Global svn arguments to place before the subcommand.
+      # @option options [Boolean] :allow_interactive
+      #   Allow interaction with svn command.
+      #
+      # @yield [line]
+      #   If a block is given, each line that the Subversion command writes to
+      #   standard output will be yielded to the calling block.
+      # @yieldparam line [String]
+      #   Line of standard output.
+      # @return [String]
+      #   The standard output from svn.
+      # @raise [SvnExecError]
+      #   If the svn command errors out this exception is raised.
+      def run_svn(subcommand, args, options = {}, &block)
+        options[:global_args] ||= []
+        options[:global_args] << "--non-interactive" unless options[:allow_interactive]
+        command = [
+          "svn",
+          *options[:global_args],
+          subcommand,
+          *args,
+        ].compact
+
+        # Create pipes for standard output and standard error.
+        stdout_rd, stdout_wr = IO.pipe
+        stderr_rd, stderr_wr = IO.pipe
+
+        # Launch the svn subprocess using the pipes.
+        spawn_options = {
+          out: stdout_wr,
+          err: stderr_wr,
+          close_others: true,
+        }
+        spawn_options[:in] = :close unless options[:allow_interactive]
+        svn_pid = Process.spawn(*command, spawn_options)
+
+        # Close write side of the pipes in the parent process.
+        stdout_wr.close
+        stderr_wr.close
+
+        stdout = ""
+        stderr = ""
+        stdout_yield = ""
+
+        loop do
+          so = stdout_rd.read_nonblock(100000, exception: false)
+          if so.is_a?(String)
+            stdout += so
+            stdout_yield += so
+          end
+          se = stderr_rd.read_nonblock(100000, exception: false)
+          if se.is_a?(String)
+            stderr += se
+          end
+          if so.nil? and se.nil?
+            break
+          end
+          if block
+            loop do
+              index = stdout_yield.index("\n")
+              break unless index
+              line = stdout_yield[0, index]
+              block[line]
+              stdout_yield = stdout_yield[index + 1, stdout_yield.size]
+            end
+          end
+          IO.select([stdout_rd, stderr_rd])
+        end
+
+        Process.waitpid(svn_pid)
+
+        if stderr != ""
+          raise SvnExecError.new(stderr)
+        end
+
+        stdout
+      end
+
+    end
+
+  end
+end

lib/svi/util.rb

@@ -0,0 +1,48 @@
+module Svi
+  module Util
+
+    class << self
+
+      def is_path_ignored?(path, config)
+        config.ignores.find do |ignore_pattern|
+          ignore_pattern.chomp!("/")
+          if ignore_pattern.start_with?("/")
+            ignore_pattern = ignore_pattern[1, ignore_pattern.size]
+          elsif not ignore_pattern["/"]
+            path = File.basename(path)
+          end
+          File.fnmatch(ignore_pattern, path, File::FNM_PATHNAME)
+        end
+      end
+
+      def format_time(time)
+        if time < 10
+          sprintf("%.3fs", time)
+        else
+          days = (time / (60 * 60 * 24)).to_i
+          time -= days * (60 * 60 * 24)
+          hours = (time / (60 * 60)).to_i
+          time -= hours * (60 * 60)
+          minutes = (time / 60).to_i
+          time -= minutes * 60
+          incl = false
+          formatted = ""
+          if days != 0
+            incl = true
+            formatted += "#{days}d"
+          end
+          if hours != 0 or incl
+            incl = true
+            formatted += "#{hours}h"
+          end
+          if minutes != 0 or incl
+            formatted += "#{minutes}m"
+          end
+          formatted += "#{time.round}s"
+        end
+      end
+
+    end
+
+  end
+end

lib/svi/version.rb

@@ -0,0 +1,3 @@
+module Svi
+  VERSION = "0.1.0"
+end

src/SvnRunner.cc

@@ -1,82 +0,0 @@
-#include "SvnRunner.h"
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-
-SvnRunner::SvnRunner(std::vector<std::string> arguments)
-{
-    m_pid = 0;
-    int fd[2];
-    int pipe_rc = pipe(fd);
-    if (pipe_rc == -1)
-    {
-        perror("pipe");
-        return;
-    }
-    m_pid = fork();
-    if (m_pid == -1)
-    {
-        perror("fork");
-        return;
-    }
-    if (m_pid == 0)
-    {
-        close(fd[0]);
-        int dup2_rc = dup2(fd[1], STDOUT_FILENO);
-        if (dup2_rc == -1)
-        {
-            perror("dup2");
-            return;
-        }
-        char const * argv[arguments.size() + 2];
-        argv[0] = "svn";
-        argv[arguments.size() + 1] = NULL;
-        for (unsigned int i = 0; i < arguments.size(); i++)
-        {
-            argv[i + 1] = arguments[i].c_str();
-        }
-        int exec_rc = execvp("/usr/bin/svn", (char **)argv);
-        if (exec_rc == -1)
-        {
-            perror("exec");
-            exit(1);
-        }
-    }
-    else
-    {
-        close(fd[1]);
-        m_n = 100;
-        m_line = (char *)malloc(m_n);
-        m_svn_fh = fdopen(fd[0], "r");
-    }
-}
-
-const char * SvnRunner::get_line()
-{
-    if (m_pid > 0)
-    {
-        ssize_t getline_rc = getline(&m_line, &m_n, m_svn_fh);
-        if (getline_rc == -1)
-        {
-            fclose(m_svn_fh);
-            int status;
-            int waitpid_rc = waitpid(m_pid, &status, 0);
-            if (waitpid_rc == -1)
-            {
-                perror("waitpid");
-            }
-            m_status = WEXITSTATUS(status);
-            free(m_line);
-            m_pid = 0;
-            return NULL;
-        }
-        else
-        {
-            return m_line;
-        }
-    }
-    else
-    {
-        return NULL;
-    }
-}

src/SvnRunner.h

@@ -1,19 +0,0 @@
-#include <string>
-#include <vector>
-#include <unistd.h>
-#include <stdio.h>
-
-class SvnRunner
-{
-public:
-    SvnRunner(std::vector<std::string> arguments);
-    const char * get_line();
-    int status() { return m_status; }
-
-protected:
-    char * m_line;
-    size_t m_n;
-    pid_t m_pid;
-    FILE * m_svn_fh;
-    int m_status;
-};

src/svi.cc

@@ -1,31 +0,0 @@
-#include <iostream>
-#include "SvnRunner.h"
-#include <getopt.h>
-#include "svi.h"
-
-using namespace std;
-
-enum
-{
-    OPT_VERSION = 256,
-};
-
-int main(int argc, char * argv[])
-{
-    static char const optstring[] = "+";
-    static struct option const longopts[] = {
-        {"version", no_argument, NULL, OPT_VERSION},
-        {NULL, 0, NULL, 0},
-    };
-    for (int o; (o = getopt_long(argc, argv, optstring, longopts, NULL)) != -1; )
-    {
-        switch (o)
-        {
-        case OPT_VERSION:
-            printf(APPLICATION_NAME " version " APPLICATION_VERSION "\n");
-            return 0;
-        }
-    }
-
-    return 0;
-}

src/svi.h

@@ -1,7 +0,0 @@
-#ifndef SVI_H
-#define SVI_H
-
-#define APPLICATION_NAME "svi"
-#define APPLICATION_VERSION "0.0.0alpha0"
-
-#endif

svi.gemspec

@@ -0,0 +1,34 @@
+# coding: utf-8
+lib = File.expand_path('../lib', __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require 'svi/version'
+
+Gem::Specification.new do |spec|
+  spec.name          = "svi"
+  spec.version       = Svi::VERSION
+  spec.authors       = ["Josh Holtrop"]
+  spec.email         = ["jholtrop@gmail.com"]
+
+  spec.summary       = %q{Subversion Improved}
+  spec.description   = %q{Subversion Improved.}
+  spec.homepage      = "TODO: Put your gem's website or public repo URL here."
+  spec.license       = "MIT"
+
+  # Prevent pushing this gem to RubyGems.org by setting 'allowed_push_host', or
+  # delete this section to allow pushing this gem to any host.
+  if spec.respond_to?(:metadata)
+    spec.metadata['allowed_push_host'] = "TODO: Set to 'http://mygemserver.com'"
+  else
+    raise "RubyGems 2.0 or newer is required to protect against public gem pushes."
+  end
+
+  spec.files         = Dir['{bin,exe,ext,assets,integration,lib,spec,doc}/**/*', '*.gemspec', '.rspec']
+  spec.bindir        = "exe"
+  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.extensions    = %w[ext/svi/extconf.rb]
+  spec.require_paths = ["lib"]
+
+  spec.add_dependency "yawpa", "~> 1.0"
+  spec.add_development_dependency "bundler", "~> 1.10"
+  spec.add_development_dependency "rake", "~> 10.0"
+end

wscript

@@ -1,12 +0,0 @@
-def options(opt):
-    opt.load("compiler_cxx")
-
-def configure(conf):
-    conf.load("compiler_cxx")
-    conf.check(header_name = "getopt.h")
-
-def build(bld):
-    bld(features = "cxx cxxprogram",
-        target = "svi",
-        source = bld.path.ant_glob("src/**/*.cc"),
-        cxxflags = ["-Wall", "-std=gnu++14"])