Merge pull request #2737 from Subsurface-divelog/libgitCleanup

Libgit cleanup

INSTALL

@@ -97,7 +97,7 @@ Other third party library dependencies
 --------------------------------------
 
 In order for our cloud storage to be fully functional you need
-libgit2 0.23 or newer.
+libgit2 0.26 or newer.
 
 
 cmake build system

core/android.cpp

@@ -53,9 +53,6 @@ bool subsurface_ignore_font(const char *font)
 	return false;
 }
 
-void subsurface_user_info(struct user_info *user)
-{ /* Encourage use of at least libgit2-0.20 */ }
-
 static const char *system_default_path_append(const char *append)
 {
 	// Qt appears to find a working path for us - let's just go with that

core/dive.h

@@ -310,12 +310,6 @@ extern int save_dive_sites_logic(const char *filename, const struct dive_site *s
 struct membuffer;
 extern void save_one_dive_to_mb(struct membuffer *b, struct dive *dive, bool anonymize);
 
-struct user_info {
-	char *name;
-	char *email;
-};
-
-extern void subsurface_user_info(struct user_info *);
 extern void subsurface_console_init(void);
 extern void subsurface_console_exit(void);
 extern bool subsurface_user_is_root(void);

core/git-access.c

@@ -349,6 +349,7 @@ static int try_to_git_merge(git_repository *repo, git_reference **local_p, git_r
 	git_commit *local_commit, *remote_commit, *base_commit;
 	git_index *merged_index;
 	git_merge_options merge_options;
+	struct membuffer msg = { 0, 0, NULL};
 
 	if (verbose) {
 		char outlocal[41], outremote[41];
@@ -359,11 +360,7 @@ static int try_to_git_merge(git_repository *repo, git_reference **local_p, git_r
 	}
 
 	git_merge_init_options(&merge_options, GIT_MERGE_OPTIONS_VERSION);
-#if !LIBGIT2_VER_MAJOR && LIBGIT2_VER_MINOR > 23
 	merge_options.flags = GIT_MERGE_FIND_RENAMES;
-#else
-	merge_options.tree_flags = GIT_MERGE_TREE_FIND_RENAMES;
-#endif
 	merge_options.file_favor = GIT_MERGE_FILE_FAVOR_UNION;
 	merge_options.rename_threshold = 100;
 	if (git_commit_lookup(&local_commit, repo, local_id)) {
@@ -434,10 +431,12 @@ static int try_to_git_merge(git_repository *repo, git_reference **local_p, git_r
 		goto write_error;
 	if (git_tree_lookup(&merged_tree, repo, &merge_oid))
 		goto write_error;
-	if (git_signature_default(&author, repo) < 0)
-		if (git_signature_now(&author, "Subsurface", "noemail@given") < 0)
-			goto write_error;
-	if (git_commit_create_v(&commit_oid, repo, NULL, author, author, NULL, "automatic merge", merged_tree, 2, local_commit, remote_commit))
+	if (get_authorship(repo, &author) < 0)
+		goto write_error;
+	const char *user_agent = subsurface_user_agent();
+	put_format(&msg, "Automatic merge\n\nCreated by %s\n", user_agent);
+	free((void *)user_agent);
+	if (git_commit_create_v(&commit_oid, repo, NULL, author, author, NULL, mb_cstring(&msg), merged_tree, 2, local_commit, remote_commit))
 		goto write_error;
 	if (git_commit_lookup(&commit, repo, &commit_oid))
 		goto write_error;
@@ -454,12 +453,14 @@ static int try_to_git_merge(git_repository *repo, git_reference **local_p, git_r
 	git_signature_free(author);
 	if (verbose)
 		fprintf(stderr, "Successfully merged repositories");
+	free_buffer(&msg);
 	return 0;
 
 diverged_error:
 	return report_error(translate("gettextFromC", "Remote storage and local data diverged"));
 
 write_error:
+	free_buffer(&msg);
 	return report_error(translate("gettextFromC", "Remote storage and local data diverged. Error: writing the data failed (%s)"), giterr_last()->message);
 }
 

core/git-access.h

@@ -31,6 +31,7 @@ void set_git_update_cb(int(*)(const char *));
 int git_storage_update_progress(const char *text);
 char *get_local_dir(const char *remote, const char *branch);
 int git_create_local_repo(const char *filename);
+int get_authorship(git_repository *repo, git_signature **authorp);
 
 #ifdef __cplusplus
 }

core/ios.cpp

@@ -37,11 +37,6 @@ bool subsurface_ignore_font(const char*)
 	return false;
 }
 
-void subsurface_user_info(struct user_info *)
-{
-	// We use of at least libgit2-0.20
-}
-
 static const char *system_default_path_append(const char *append)
 {
 	// Qt appears to find a working path for us - let's just go with that

core/macos.c

@@ -20,12 +20,6 @@
 #include <zip.h>
 #include <sys/stat.h>
 
-void subsurface_user_info(struct user_info *info)
-{
-	UNUSED(info);
-	/* Nothing, let's use libgit2-20 on MacOS */
-}
-
 /* macos defines CFSTR to create a CFString object from a constant,
  * but no similar macros if a C string variable is supposed to be
  * the argument. We add this here (hardcoding the default allocator

core/save-git.c

@@ -1021,25 +1021,18 @@ int update_git_checkout(git_repository *repo, git_object *parent, git_tree *tree
 	return git_checkout_tree(repo, (git_object *) tree, &opts);
 }
 
-static int get_authorship(git_repository *repo, git_signature **authorp)
+int get_authorship(git_repository *repo, git_signature **authorp)
 {
-#if LIBGIT2_VER_MAJOR || LIBGIT2_VER_MINOR >= 20
 	if (git_signature_default(authorp, repo) == 0)
 		return 0;
-#endif
-	/* try to fetch the user info from the OS, otherwise use default values. */
-	struct user_info user = { .name = NULL, .email = NULL };
-	subsurface_user_info(&user);
-	if (!user.name || !*user.name)
-		user.name = strdup("Subsurface");
-	if (!user.email)
-		user.email = strdup("subsurface-app-account@subsurface-divelog.org");
 
-	/* git_signature_default() is too recent */
-	int ret = git_signature_now(authorp, user.name, user.email);
-	free((void *)user.name);
-	free((void *)user.email);
-	return ret;
+#ifdef SUBSURFACE_MOBILE
+#define APPNAME "Subsurface-mobile"
+#else
+#define APPNAME "Subsurface"
+#endif
+	return git_signature_now(authorp, APPNAME, "subsurface-app-account@subsurface-divelog.org");
+#undef APPNAME
 }
 
 static void create_commit_message(struct membuffer *msg, bool create_empty)

core/unix.c

@@ -34,36 +34,6 @@ bool subsurface_ignore_font(const char *font)
 	return false;
 }
 
-void subsurface_user_info(struct user_info *user)
-{
-	struct passwd *pwd = getpwuid(getuid());
-	const char *username = getenv("USER");
-
-	if (pwd) {
-		if (!empty_string(pwd->pw_gecos)) {
-			user->name = strdup(pwd->pw_gecos);
-			// We only want the name, not the office or phone number
-			char *c = user->name;
-			while (*c) {
-				if (*c == ',') {
-					*c = '\0';
-					break;
-				}
-				++c;
-			}
-		}
-		if (!username)
-			username = pwd->pw_name;
-	}
-	if (!empty_string(username)) {
-		char hostname[64];
-		struct membuffer mb = {};
-		gethostname(hostname, sizeof(hostname));
-		put_format(&mb, "%s@%s", username, hostname);
-		user->email = detach_cstring(&mb);
-	}
-}
-
 static const char *system_default_path_append(const char *append)
 {
 	const char *home = getenv("HOME");

core/windows.c

@@ -23,9 +23,6 @@ const char current_system_divelist_default_font[] = "Segoe UI";
 const char *system_divelist_default_font = non_standard_system_divelist_default_font;
 double system_divelist_default_font_size = -1;
 
-void subsurface_user_info(struct user_info *user)
-{ /* Encourage use of at least libgit2-0.20 */ }
-
 extern bool isWin7Or8();
 
 void subsurface_OS_pref_setup(void)

packaging/OBS/subsurfacedaily.spec

@@ -120,7 +120,6 @@ mkdir -p install-root
 		-DLIBGIT2_INCLUDE_DIR=$RPM_BUILD_DIR/install-root/include \
 		-DLIBDIVECOMPUTER_LIBRARIES=$RPM_BUILD_DIR/install-root/lib/libdivecomputer.a \
 		-DLIBGIT2_LIBRARIES=$RPM_BUILD_DIR/install-root/lib/libgit2.a \
-		-DUSE_LIBGIT23_API=ON \
 		-DCMAKE_C_FLAGS:STRING="%optflags" \
 		-DCMAKE_CXX_FLAGS:STRING="%optflags" \
 		-DNO_PRINTING=OFF \

packaging/ubuntu/debian/rules

@@ -64,7 +64,6 @@ override_dh_auto_configure:
 			-DLIBGIT2_LIBRARIES=$(MY_INSTALL_ROOT)/lib/libgit2.a \
 			-DLIBDIVECOMPUTER_INCLUDE_DIR=$(MY_INSTALL_ROOT)/include \
 			-DLIBDIVECOMPUTER_LIBRARIES=$(MY_INSTALL_ROOT)/lib/libdivecomputer.a \
-			-DUSE_LIBGIT23_API=1 \
 			-DFORCE_LIBSSH=1 \
 			-DNO_PRINTING=OFF \
 			-DMAKE_TESTS=OFF \

scripts/build.sh

@@ -245,8 +245,8 @@ fi
 if [ "$PLATFORM" = Darwin ] ; then
 	SH_LIB_EXT=dylib
 	if [ ! "$BUILD_DEPS" == "1" ] ; then
-		pkg-config --exists libgit2 && LIBGIT=$(pkg-config --modversion libgit2 | cut -d. -f2)
-		if [[ "$LIBGIT" -gt "23" ]] ; then
+		pkg-config --exists libgit2 && LIBGIT=$(pkg-config --modversion libgit2) && LIBGITMAJ=$(echo $LIBGIT | cut -d. -f1) && LIBGIT=$(echo $LIBGIT | cut -d. -f2)
+		if [[ "$LIBGITMAJ" -gt "0" || "$LIBGIT" -gt "25" ]] ; then
 			LIBGIT2_FROM_PKGCONFIG="-DLIBGIT2_FROM_PKGCONFIG=ON"
 		fi
 	fi
@@ -258,12 +258,20 @@ else
 	# first check pkgconfig (that will capture our own local build if
 	# this script has been run before)
 	if pkg-config --exists libgit2 ; then
-		LIBGIT=$(pkg-config --modversion libgit2 | cut -d. -f2)
-		LIBGIT2_FROM_PKGCONFIG="-DLIBGIT2_FROM_PKGCONFIG=ON"
+		LIBGIT=$(pkg-config --modversion libgit2)
+		LIBGITMAJ=$(echo $LIBGIT | cut -d. -f1)
+		LIBGIT=$(echo $LIBGIT | cut -d. -f2)
+		if [[ "$LIBGITMAJ" -gt "0" || "$LIBGIT" -gt "25" ]] ; then
+			LIBGIT2_FROM_PKGCONFIG="-DLIBGIT2_FROM_PKGCONFIG=ON"
+		fi
 	fi
-	if [[ "$LIBGIT" -lt "26" ]] ; then
+	if [[ "$LIBGITMAJ" -lt "1" && "$LIBGIT" -lt "26" ]] ; then
 		# maybe there's a system version that's new enough?
-		LIBGIT=$(ldconfig -p | grep libgit2\\.so\\. | awk -F. '{ print $NF }')
+		# Ugh that's uggly - read the ultimate filename, split at the last 'o' which gets us ".0.26.3" or ".1.0.0"
+		# since that starts with a dot, the field numbers in the cut need to be one higher
+		LIBGIT=$(realpath $(ldconfig -p | grep libgit2\\.so\\. | cut -d\  -f4) | awk -Fo '{ print $NF }')
+		LIBGITMAJ=$(echo $LIBGIT | cut -d. -f2)
+		LIBGIT=$(echo $LIBGIT | cut -d. -f3)
 	fi
 fi
 
@@ -312,7 +320,7 @@ if [[ $PLATFORM = Darwin && "$BUILD_DEPS" == "1" ]] ; then
 	fi
 fi
 
-if [[ "$LIBGIT" -lt "26" ]] ; then
+if [[ "$LIBGITMAJ" -lt "1" && "$LIBGIT" -lt "26" ]] ; then
 	LIBGIT_ARGS=" -DLIBGIT2_INCLUDE_DIR=$INSTALL_ROOT/include -DLIBGIT2_LIBRARIES=$INSTALL_ROOT/lib/libgit2.$SH_LIB_EXT "
 
 	cd "$SRC"