X-Git-Url: https://git.distorted.org.uk/~mdw/tig/blobdiff_plain/de46362f24d53b4a6ccb9c70e446a1d32b05f08d..bc02ff85afe6c89ea38a2bba765504276dc3b113:/tig.c

diff --git a/tig.c b/tig.c
index b013410..466fc2d 100644
--- a/tig.c
+++ b/tig.c
@@ -103,6 +103,8 @@ static size_t utf8_length(const char *string, size_t max_width, int *trimmed, bo
 
 #define	SCALE_SPLIT_VIEW(height)	((height) * 2 / 3)
 
+#define NULL_ID		"0000000000000000000000000000000000000000"
+
 #ifndef GIT_CONFIG
 #define GIT_CONFIG "git config"
 #endif
@@ -444,6 +446,7 @@ static char opt_path[SIZEOF_STR]	= "";
 static char opt_file[SIZEOF_STR]	= "";
 static char opt_ref[SIZEOF_REF]		= "";
 static char opt_head[SIZEOF_REF]	= "";
+static bool opt_no_head			= TRUE;
 static FILE *opt_pipe			= NULL;
 static char opt_encoding[20]		= "UTF-8";
 static bool opt_utf8			= TRUE;
@@ -521,7 +524,7 @@ parse_options(int argc, char *argv[])
 			return FALSE;
 
 		} else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
-			printf(usage);
+			printf("%s\n", usage);
 			return FALSE;
 		}
 
@@ -2275,18 +2278,6 @@ open_view(struct view *prev, enum request request, enum open_flags flags)
 		return;
 	}
 
-	if (view->ops->open) {
-		if (!view->ops->open(view)) {
-			report("Failed to load %s view", view->name);
-			return;
-		}
-
-	} else if ((reload || strcmp(view->vid, view->id)) &&
-		   !begin_update(view)) {
-		report("Failed to load %s view", view->name);
-		return;
-	}
-
 	if (split) {
 		display[1] = view;
 		if (!backgrounded)
@@ -2304,6 +2295,18 @@ open_view(struct view *prev, enum request request, enum open_flags flags)
 	    (nviews == 1 && base_view != display[0]))
 		resize_display();
 
+	if (view->ops->open) {
+		if (!view->ops->open(view)) {
+			report("Failed to load %s view", view->name);
+			return;
+		}
+
+	} else if ((reload || strcmp(view->vid, view->id)) &&
+		   !begin_update(view)) {
+		report("Failed to load %s view", view->name);
+		return;
+	}
+
 	if (split && prev->lineno - prev->offset >= prev->height) {
 		/* Take the title line into account. */
 		int lines = prev->lineno - prev->offset - prev->height + 1;
@@ -3411,9 +3414,9 @@ parse_blame_commit(struct view *view, char *text, int *blamed)
 
 		blame = line->data;
 		blame->commit = commit;
+		blame->header = !group;
 		line->dirty = 1;
 	}
-	blame->header = 1;
 
 	return commit;
 }
@@ -3637,7 +3640,7 @@ blame_request(struct view *view, enum request request, struct line *line)
 			break;
 		}
 
-		if (!strcmp(blame->commit->id, "0000000000000000000000000000000000000000")) {
+		if (!strcmp(blame->commit->id, NULL_ID)) {
 			char path[SIZEOF_STR];
 
 			if (sq_quote(path, 0, view->vid) >= sizeof(path))
@@ -3692,7 +3695,7 @@ blame_select(struct view *view, struct line *line)
 	if (!commit)
 		return;
 
-	if (!strcmp(commit->id, "0000000000000000000000000000000000000000"))
+	if (!strcmp(commit->id, NULL_ID))
 		string_ncopy(ref_commit, "HEAD", 4);
 	else
 		string_copy_rev(ref_commit, commit->id);
@@ -3764,7 +3767,7 @@ status_get_diff(struct status *file, char *buf, size_t bufsize)
 }
 
 static bool
-status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
+status_run(struct view *view, const char cmd[], char status, enum line_type type)
 {
 	struct status *file = NULL;
 	struct status *unmerged = NULL;
@@ -3803,8 +3806,10 @@ status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
 			}
 
 			/* Parse diff info part. */
-			if (!diff) {
-				file->status = '?';
+			if (status) {
+				file->status = status;
+				if (status == 'A')
+					string_copy(file->old.rev, NULL_ID);
 
 			} else if (!file->status) {
 				if (!status_get_diff(file, buf, sepsize))
@@ -3880,6 +3885,8 @@ error_out:
 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
 #define STATUS_LIST_OTHER_CMD \
 	"git ls-files -z --others --exclude-per-directory=.gitignore"
+#define STATUS_LIST_NO_HEAD_CMD \
+	"git ls-files -z --cached --exclude-per-directory=.gitignore"
 
 #define STATUS_DIFF_INDEX_SHOW_CMD \
 	"git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s %s 2>/dev/null"
@@ -3887,6 +3894,9 @@ error_out:
 #define STATUS_DIFF_FILES_SHOW_CMD \
 	"git diff-files --root --patch-with-stat -C -M -- %s %s 2>/dev/null"
 
+#define STATUS_DIFF_NO_HEAD_SHOW_CMD \
+	"git diff --no-color --patch-with-stat /dev/null %s 2>/dev/null"
+
 /* First parse staged info using git-diff-index(1), then parse unstaged
  * info using git-diff-files(1), and finally untracked files using
  * git-ls-files(1). */
@@ -3895,8 +3905,10 @@ status_open(struct view *view)
 {
 	struct stat statbuf;
 	char exclude[SIZEOF_STR];
-	char cmd[SIZEOF_STR];
+	char indexcmd[SIZEOF_STR] = STATUS_DIFF_INDEX_CMD;
+	char othercmd[SIZEOF_STR] = STATUS_LIST_OTHER_CMD;
 	unsigned long prev_lineno = view->lineno;
+	char indexstatus = 0;
 	size_t i;
 
 	for (i = 0; i < view->lines; i++)
@@ -3909,29 +3921,40 @@ status_open(struct view *view)
 		return FALSE;
 
 	add_line_data(view, NULL, LINE_STAT_HEAD);
-	if (!*opt_head)
+	if (opt_no_head)
+		string_copy(status_onbranch, "Initial commit");
+	else if (!*opt_head)
 		string_copy(status_onbranch, "Not currently on any branch");
 	else if (!string_format(status_onbranch, "On branch %s", opt_head))
 		return FALSE;
 
+	if (opt_no_head) {
+		string_copy(indexcmd, STATUS_LIST_NO_HEAD_CMD);
+		indexstatus = 'A';
+	}
+
 	if (!string_format(exclude, "%s/info/exclude", opt_git_dir))
 		return FALSE;
 
-	string_copy(cmd, STATUS_LIST_OTHER_CMD);
-
 	if (stat(exclude, &statbuf) >= 0) {
-		size_t cmdsize = strlen(cmd);
+		size_t cmdsize = strlen(othercmd);
+
+		if (!string_format_from(othercmd, &cmdsize, " %s", "--exclude-from=") ||
+		    sq_quote(othercmd, cmdsize, exclude) >= sizeof(othercmd))
+			return FALSE;
 
-		if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") ||
-		    sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd))
+		cmdsize = strlen(indexcmd);
+		if (opt_no_head &&
+		    (!string_format_from(indexcmd, &cmdsize, " %s", "--exclude-from=") ||
+		     sq_quote(indexcmd, cmdsize, exclude) >= sizeof(indexcmd)))
 			return FALSE;
 	}
 
 	system("git update-index -q --refresh");
 
-	if (!status_run(view, STATUS_DIFF_INDEX_CMD, TRUE, LINE_STAT_STAGED) ||
-	    !status_run(view, STATUS_DIFF_FILES_CMD, TRUE, LINE_STAT_UNSTAGED) ||
-	    !status_run(view, cmd, FALSE, LINE_STAT_UNTRACKED))
+	if (!status_run(view, indexcmd, indexstatus, LINE_STAT_STAGED) ||
+	    !status_run(view, STATUS_DIFF_FILES_CMD, 0, LINE_STAT_UNSTAGED) ||
+	    !status_run(view, othercmd, '?', LINE_STAT_UNTRACKED))
 		return FALSE;
 
 	/* If all went well restore the previous line number to stay in
@@ -3941,6 +3964,8 @@ status_open(struct view *view)
 		prev_lineno = view->lines - 1;
 	while (prev_lineno < view->lines && !view->line[prev_lineno].data)
 		prev_lineno++;
+	while (prev_lineno > 0 && !view->line[prev_lineno].data)
+		prev_lineno--;
 
 	/* If the above fails, always skip the "On branch" line. */
 	if (prev_lineno < view->lines)
@@ -3948,6 +3973,11 @@ status_open(struct view *view)
 	else
 		view->lineno = 1;
 
+	if (view->lineno < view->offset)
+		view->offset = view->lineno;
+	else if (view->offset + view->height <= view->lineno)
+		view->offset = view->lineno - view->height + 1;
+
 	return TRUE;
 }
 
@@ -4049,9 +4079,18 @@ status_enter(struct view *view, struct line *line)
 
 	switch (line->type) {
 	case LINE_STAT_STAGED:
-		if (!string_format_from(opt_cmd, &cmdsize,
-					STATUS_DIFF_INDEX_SHOW_CMD, oldpath, newpath))
-			return REQ_QUIT;
+		if (opt_no_head) {
+			if (!string_format_from(opt_cmd, &cmdsize,
+						STATUS_DIFF_NO_HEAD_SHOW_CMD,
+						newpath))
+				return REQ_QUIT;
+		} else {
+			if (!string_format_from(opt_cmd, &cmdsize,
+						STATUS_DIFF_INDEX_SHOW_CMD,
+						oldpath, newpath))
+				return REQ_QUIT;
+		}
+
 		if (status)
 			info = "Staged changes to %s";
 		else
@@ -4072,7 +4111,6 @@ status_enter(struct view *view, struct line *line)
 		if (opt_pipe)
 			return REQ_QUIT;
 
-
 	    	if (!status) {
 			report("No file to show");
 			return REQ_NONE;
@@ -4105,64 +4143,113 @@ status_enter(struct view *view, struct line *line)
 }
 
 
-static bool
-status_update_file(struct view *view, struct status *status, enum line_type type)
+static FILE *
+status_update_prepare(enum line_type type)
 {
 	char cmd[SIZEOF_STR];
-	char buf[SIZEOF_STR];
 	size_t cmdsize = 0;
-	size_t bufsize = 0;
-	size_t written = 0;
-	FILE *pipe;
 
 	if (opt_cdup[0] &&
 	    type != LINE_STAT_UNTRACKED &&
 	    !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
-		return FALSE;
+		return NULL;
+
+	switch (type) {
+	case LINE_STAT_STAGED:
+		string_add(cmd, cmdsize, "git update-index -z --index-info");
+		break;
+
+	case LINE_STAT_UNSTAGED:
+	case LINE_STAT_UNTRACKED:
+		string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
+		break;
+
+	default:
+		die("line type %d not handled in switch", type);
+	}
+
+	return popen(cmd, "w");
+}
+
+static bool
+status_update_write(FILE *pipe, struct status *status, enum line_type type)
+{
+	char buf[SIZEOF_STR];
+	size_t bufsize = 0;
+	size_t written = 0;
 
 	switch (type) {
 	case LINE_STAT_STAGED:
 		if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
-				        status->old.mode,
+					status->old.mode,
 					status->old.rev,
 					status->old.name, 0))
 			return FALSE;
-
-		string_add(cmd, cmdsize, "git update-index -z --index-info");
 		break;
 
 	case LINE_STAT_UNSTAGED:
 	case LINE_STAT_UNTRACKED:
 		if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
 			return FALSE;
-
-		string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
 		break;
 
-	case LINE_STAT_HEAD:
-		return TRUE;
-
 	default:
 		die("line type %d not handled in switch", type);
 	}
 
-	pipe = popen(cmd, "w");
-	if (!pipe)
-		return FALSE;
-
 	while (!ferror(pipe) && written < bufsize) {
 		written += fwrite(buf + written, 1, bufsize - written, pipe);
 	}
 
+	return written == bufsize;
+}
+
+static bool
+status_update_file(struct status *status, enum line_type type)
+{
+	FILE *pipe = status_update_prepare(type);
+	bool result;
+
+	if (!pipe)
+		return FALSE;
+
+	result = status_update_write(pipe, status, type);
 	pclose(pipe);
+	return result;
+}
+
+static bool
+status_update_files(struct view *view, struct line *line)
+{
+	FILE *pipe = status_update_prepare(line->type);
+	bool result = TRUE;
+	struct line *pos = view->line + view->lines;
+	int files = 0;
+	int file, done;
 
-	if (written != bufsize)
+	if (!pipe)
 		return FALSE;
 
-	return TRUE;
+	for (pos = line; pos < view->line + view->lines && pos->data; pos++)
+		files++;
+
+	for (file = 0, done = 0; result && file < files; line++, file++) {
+		int almost_done = file * 100 / files;
+
+		if (almost_done > done) {
+			done = almost_done;
+			string_format(view->ref, "updating file %u of %u (%d%% done)",
+				      file, files, done);
+			update_view_title(view);
+		}
+		result = status_update_write(pipe, line->data, line->type);
+	}
+
+	pclose(pipe);
+	return result;
 }
 
-static void
+static bool
 status_update(struct view *view)
 {
 	struct line *line = &view->line[view->lineno];
@@ -4170,19 +4257,20 @@ status_update(struct view *view)
 	assert(view->lines);
 
 	if (!line->data) {
-		while (++line < view->line + view->lines && line->data) {
-			if (!status_update_file(view, line->data, line->type))
-				report("Failed to update file status");
-		}
-
-		if (!line[-1].data) {
+		/* This should work even for the "On branch" line. */
+		if (line < view->line + view->lines && !line[1].data) {
 			report("Nothing to update");
-			return;
+			return FALSE;
 		}
 
-	} else if (!status_update_file(view, line->data, line->type)) {
+		if (!status_update_files(view, line + 1))
+			report("Failed to update file status");
+
+	} else if (!status_update_file(line->data, line->type)) {
 		report("Failed to update file status");
 	}
+
+	return TRUE;
 }
 
 static enum request
@@ -4192,7 +4280,8 @@ status_request(struct view *view, enum request request, struct line *line)
 
 	switch (request) {
 	case REQ_STATUS_UPDATE:
-		status_update(view);
+		if (!status_update(view))
+			return REQ_NONE;
 		break;
 
 	case REQ_STATUS_MERGE:
@@ -4381,7 +4470,7 @@ stage_update_chunk(struct view *view, struct line *line)
 		return FALSE;
 
 	if (!string_format_from(cmd, &cmdsize,
-				"git apply --cached %s - && "
+				"git apply --whitespace=nowarn --cached %s - && "
 				"git update-index -q --unmerged --refresh 2>/dev/null",
 				stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
 		return FALSE;
@@ -4436,14 +4525,14 @@ stage_update_chunk(struct view *view, struct line *line)
 static void
 stage_update(struct view *view, struct line *line)
 {
-	if (stage_line_type != LINE_STAT_UNTRACKED &&
+	if (!opt_no_head && stage_line_type != LINE_STAT_UNTRACKED &&
 	    (line->type == LINE_DIFF_CHUNK || !stage_status.status)) {
 		if (!stage_update_chunk(view, line)) {
 			report("Failed to apply chunk");
 			return;
 		}
 
-	} else if (!status_update_file(view, &stage_status, stage_line_type)) {
+	} else if (!status_update_file(&stage_status, stage_line_type)) {
 		report("Failed to update file");
 		return;
 	}
@@ -5432,6 +5521,7 @@ read_ref(char *id, size_t idlen, char *name, size_t namelen)
 		head	 = !strncmp(opt_head, name, namelen);
 
 	} else if (!strcmp(name, "HEAD")) {
+		opt_no_head = FALSE;
 		return OK;
 	}