Add --abbrev-commit, --format=oneline and --oneline to the log subcommand

src/subcommand/log_subcommand.cpp

@@ -11,16 +11,17 @@
 
 #include "log_subcommand.hpp"
 #include "../utils/terminal_pager.hpp"
-#include "../wrapper/repository_wrapper.hpp"
-#include "../wrapper/commit_wrapper.hpp"
 
 log_subcommand::log_subcommand(const libgit2_object&, CLI::App& app)
 {
     auto *sub = app.add_subcommand("log", "Shows commit logs");
 
-    sub->add_flag("--format", m_format_flag, "Pretty-print the contents of the commit logs in a given format, where <format> can be one of full and fuller");
+    sub->add_option("--format", m_format_flag, "Pretty-print the contents of the commit logs in a given format, where <format> can be one of full and fuller");
     sub->add_option("-n,--max-count", m_max_count_flag, "Limit the output to <number> commits.");
-    // sub->add_flag("--oneline", m_oneline_flag, "This is a shorthand for --pretty=oneline --abbrev-commit used together.");
+    sub->add_flag("--abbrev-commit", m_abbrev_commit_flag, "Instead of showing the full 40-byte hexadecimal commit object name, show a prefix that names the object uniquely. --abbrev=<n> (which also modifies diff output, if it is displayed) option can be used to specify the minimum length of the prefix.");
+    sub->add_option("--abbrev", m_abbrev, "Instead of showing the full 40-byte hexadecimal object name in diff-raw format output and diff-tree header lines, show the shortest prefix that is at least <n> hexdigits long that uniquely refers the object.");
+    sub->add_flag("--no-abbrev-commit", m_no_abbrev_commit_flag, "Show the full 40-byte hexadecimal commit object name. This negates --abbrev-commit, either explicit or implied by other options such as --oneline.");
+    sub->add_flag("--oneline", m_oneline_flag, "This is a shorthand for --format=oneline --abbrev-commit used together.");
 
     sub->callback([this]() { this->run(); });
 };
@@ -166,6 +167,7 @@ void print_refs(const commit_refs& refs)
         return;
     }
 
+    std::cout << termcolor::yellow;
     std::cout << " (";
 
     bool first = true;
@@ -179,7 +181,7 @@ void print_refs(const commit_refs& refs)
         first = false;
     }
 
-    for (const auto& tag :refs.tags)
+    for (const auto& tag : refs.tags)
     {
         if (!first)
         {
@@ -212,17 +214,47 @@ void print_refs(const commit_refs& refs)
     std::cout << ")" << termcolor::reset;
 }
 
-void print_commit(repository_wrapper& repo, const commit_wrapper& commit, std::string m_format_flag)
+void log_subcommand::print_commit(repository_wrapper& repo, const commit_wrapper& commit)
 {
-    std::string buf = commit.commit_oid_tostr();
+    const bool abbrev_commit = (m_abbrev_commit_flag || m_oneline_flag) && !m_no_abbrev_commit_flag;
+    const bool oneline = (m_format_flag == "oneline") || m_oneline_flag;
+
+    std::string sha = commit.commit_oid_tostr();
+
+    if (abbrev_commit && m_abbrev <= sha.size())
+    {
+        sha = sha.substr(0, m_abbrev);
+    }
+
+    commit_refs refs = get_refs_for_commit(repo, commit.oid());
+
+    std::string message = commit.message();
+    while (!message.empty() && message.back() == '\n')
+        message.pop_back();
+
+    if (oneline)
+    {
+        std::string subject;
+        {
+            std::istringstream s(message);
+            std::getline(s, subject);
+        }
+
+        std::cout << termcolor::yellow << sha << termcolor::reset;
+        print_refs(refs);
+        if (!subject.empty())
+        {
+            std::cout << " " << subject;
+        }
+        return;
+    }
 
     signature_wrapper author = signature_wrapper::get_commit_author(commit);
     signature_wrapper committer = signature_wrapper::get_commit_committer(commit);
 
     stream_colour_fn colour = termcolor::yellow;
-    std::cout << colour << "commit " << buf;
+    std::cout << colour << "commit " << sha << termcolor::reset;
 
-    commit_refs refs = get_refs_for_commit(repo, commit.oid());
     print_refs(refs);
 
     std::cout << termcolor::reset << std::endl;
@@ -247,11 +279,6 @@ void print_commit(repository_wrapper& repo, const commit_wrapper& commit, std::s
         }
     }
 
-    std::string message = commit.message();
-    while (!message.empty() && message.back() == '\n')
-    {
-        message.pop_back();
-    }
     std::istringstream message_stream(message);
     std::string line;
     while (std::getline(message_stream, line))
@@ -287,7 +314,7 @@ void log_subcommand::run()
             std::cout << std::endl;
         }
         commit_wrapper commit = repo.find_commit(commit_oid);
-        print_commit(repo, commit, m_format_flag);
+        print_commit(repo, commit);
         ++i;
     }
 

src/subcommand/log_subcommand.hpp

@@ -4,6 +4,8 @@
 #include <limits>
 
 #include "../utils/common.hpp"
+#include "../wrapper/commit_wrapper.hpp"
+#include "../wrapper/repository_wrapper.hpp"
 
 
 class log_subcommand
@@ -14,7 +16,13 @@ class log_subcommand
     void run();
 
 private:
+
+    void print_commit(repository_wrapper& repo, const commit_wrapper& commit);
+
     std::string m_format_flag;
     int m_max_count_flag=std::numeric_limits<int>::max();
-    // bool m_oneline_flag = false;
+    size_t m_abbrev = 7;
+    bool m_abbrev_commit_flag = false;
+    bool m_no_abbrev_commit_flag = false;
+    bool m_oneline_flag = false;
 };

src/subcommand/revparse_subcommand.cpp

@@ -1,14 +1,29 @@
 #include "revparse_subcommand.hpp"
+#include "../utils/git_exception.hpp"
 #include "../wrapper/repository_wrapper.hpp"
-#include <ios>
-#include <stdexcept>
 
 revparse_subcommand::revparse_subcommand(const libgit2_object&, CLI::App& app)
 {
     auto* sub = app.add_subcommand("rev-parse", "Pick out and message parameters");
 
-    sub->add_flag("--is-bare-repository", m_is_bare_repository_flag);
-    sub->add_flag("--is-shallow-repository", m_is_shallow_repository_flag);
+    auto* bare_opt = sub->add_flag("--is-bare-repository", m_is_bare_repository_flag, "When the repository is bare print \"true\", otherwise \"false\".");
+    auto* shallow_opt = sub->add_flag("--is-shallow-repository", m_is_shallow_repository_flag, "When the repository is shallow print \"true\", otherwise \"false\".");
+
+    sub->add_option("<rev>", m_revisions, "Revision(s) to parse (e.g. HEAD, main, HEAD~1, dae86e, ...)");
+
+    sub->parse_complete_callback([this, sub, bare_opt, shallow_opt]() {
+        for (CLI::Option* opt : sub->parse_order())
+        {
+            if (opt == bare_opt)
+            {
+                m_queries_in_order.push_back("is_bare");
+            }
+            else if (opt == shallow_opt)
+            {
+                m_queries_in_order.push_back("is_shallow");
+            }
+        }
+    });
 
     sub->callback([this]() { this->run(); });
 }
@@ -18,16 +33,39 @@ void revparse_subcommand::run()
     auto directory = get_current_git_path();
     auto repo = repository_wrapper::open(directory);
 
-    if (m_is_bare_repository_flag)
-    {
-        std::cout << std::boolalpha << repo.is_bare() << std::endl;
-    }
-    else if (m_is_shallow_repository_flag)
+    if (!m_queries_in_order.empty())
     {
-        std::cout << std::boolalpha << repo.is_shallow() << std::endl;
+        for (const auto& q : m_queries_in_order)
+        {
+            if (q == "is_bare")
+            {
+                std::cout << std::boolalpha << repo.is_bare() << std::endl;
+            }
+            if (q == "is_shallow")
+            {
+                std::cout << std::boolalpha << repo.is_shallow() << std::endl;
+            }
+        }
+        return;
     }
-    else
+
+    if (!m_revisions.empty())
     {
-        std::cout << "revparse only supports --is-bare-repository and --is-shallow-repository for now" << std::endl;
+        for (const auto& rev : m_revisions)
+        {
+            auto obj = repo.revparse_single(rev.c_str());
+
+            if (!obj.has_value())
+            {
+                throw git_exception("bad revision '" + rev + "'", git2cpp_error_code::BAD_ARGUMENT);
+                return;
+            }
+
+            auto oid = obj.value().oid();
+            std::cout << git_oid_tostr_s(&oid) << std::endl;
+        }
+        return;
     }
+
+    std::cout << "revparse only supports --is-bare-repository, --is-shallow-repository and parsing revisions for now" << std::endl;
 }

src/subcommand/revparse_subcommand.hpp

@@ -1,5 +1,8 @@
 #pragma once
 
+#include <string>
+#include <vector>
+
 #include <CLI/CLI.hpp>
 
 #include "../utils/common.hpp"
@@ -13,6 +16,8 @@ class revparse_subcommand
 
 private:
 
+    std::vector<std::string> m_revisions;
+    std::vector<std::string> m_queries_in_order;
     bool m_is_bare_repository_flag = false;
     bool m_is_shallow_repository_flag = false;
 };

src/subcommand/tag_subcommand.cpp

@@ -1,8 +1,6 @@
 #include <git2.h>
 
 #include "../subcommand/tag_subcommand.hpp"
-#include "../wrapper/commit_wrapper.hpp"
-#include "../wrapper/tag_wrapper.hpp"
 
 tag_subcommand::tag_subcommand(const libgit2_object&, CLI::App& app)
 {
@@ -12,6 +10,7 @@ tag_subcommand::tag_subcommand(const libgit2_object&, CLI::App& app)
     sub->add_flag("-f,--force", m_force_flag, "Replace an existing tag with the given name (instead of failing)");
     sub->add_option("-d,--delete", m_delete, "Delete existing tags with the given names.");
     sub->add_option("-n", m_num_lines, "<num> specifies how many lines from the annotation, if any, are printed when using -l. Implies --list.");
+    sub->add_flag("-a,--annotate", m_annotate_flag, "Make an annotated tag.");
     sub->add_option("-m,--message", m_message, "Tag message for annotated tags");
     sub->add_option("<tagname>", m_tag_name, "Tag name");
     sub->add_option("<commit>", m_target, "Target commit (defaults to HEAD)");
@@ -217,10 +216,18 @@ void tag_subcommand::run()
     {
         delete_tag(repo);
     }
-    else if (m_list_flag || (m_tag_name.empty() && m_message.empty()))
+    else if (m_list_flag || (m_tag_name.empty() && m_message.empty() && !m_annotate_flag))
     {
         list_tags(repo);
     }
+    else if (m_annotate_flag)
+    {
+        if (m_message.empty())
+        {
+            throw git_exception("error: -a/--annotate requires -m/--message", git2cpp_error_code::BAD_ARGUMENT);
+        }
+        create_tag(repo);
+    }
     else if (!m_message.empty())
     {
         create_tag(repo);

src/subcommand/tag_subcommand.hpp

@@ -28,5 +28,6 @@ class tag_subcommand
     std::string m_target;
     bool m_list_flag = false;
     bool m_force_flag = false;
+    bool m_annotate_flag = false;
     int m_num_lines = 0;
 };