Minor cleanups
[tig] / tig.c
diff --git a/tig.c b/tig.c
index a6447bf..a871cb0 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -565,6 +565,7 @@ LINE(TREE,     "tree ",             COLOR_BLUE,     COLOR_DEFAULT,  0), \
 LINE(AUTHOR,      "author ",           COLOR_CYAN,     COLOR_DEFAULT,  0), \
 LINE(COMMITTER,           "committer ",        COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
 LINE(SIGNOFF,     "    Signed-off-by", COLOR_YELLOW,   COLOR_DEFAULT,  0), \
+LINE(ACKED,       "    Acked-by",      COLOR_YELLOW,   COLOR_DEFAULT,  0), \
 LINE(DEFAULT,     "",                  COLOR_DEFAULT,  COLOR_DEFAULT,  A_NORMAL), \
 LINE(CURSOR,      "",                  COLOR_WHITE,    COLOR_GREEN,    A_BOLD), \
 LINE(STATUS,      "",                  COLOR_GREEN,    COLOR_DEFAULT,  0), \
@@ -661,6 +662,10 @@ init_colors(void)
 
 struct line {
        enum line_type type;
+
+       /* State flags */
+       unsigned int selected:1;
+
        void *data;             /* User data */
 };
 
@@ -1213,7 +1218,7 @@ struct view_ops {
        /* What type of content being displayed. Used in the title bar. */
        const char *type;
        /* Draw one line; @lineno must be < view->height. */
-       bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
+       bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
        /* Read one line; updates view->line. */
        bool (*read)(struct view *view, char *data);
        /* Depending on view, change display based on current line. */
@@ -1258,6 +1263,7 @@ static bool
 draw_view_line(struct view *view, unsigned int lineno)
 {
        struct line *line;
+       bool selected = (view->offset + lineno == view->lineno);
 
        assert(view_is_displayed(view));
 
@@ -1266,10 +1272,16 @@ draw_view_line(struct view *view, unsigned int lineno)
 
        line = &view->line[view->offset + lineno];
 
-       if (view->offset + lineno == view->lineno)
+       if (selected) {
+               line->selected = TRUE;
                view->ops->select(view, line);
+       } else if (line->selected) {
+               line->selected = FALSE;
+               wmove(view->win, lineno, 0);
+               wclrtoeol(view->win);
+       }
 
-       return view->ops->draw(view, line, lineno);
+       return view->ops->draw(view, line, lineno, selected);
 }
 
 static void
@@ -1421,9 +1433,9 @@ update_display_cursor(void)
 
 /* Scrolling backend */
 static void
-do_scroll_view(struct view *view, int lines, bool redraw)
+do_scroll_view(struct view *view, int lines)
 {
-       assert(view_is_displayed(view));
+       bool redraw_current_line = FALSE;
 
        /* The rendering expects the new offset. */
        view->offset += lines;
@@ -1431,6 +1443,17 @@ do_scroll_view(struct view *view, int lines, bool redraw)
        assert(0 <= view->offset && view->offset < view->lines);
        assert(lines);
 
+       /* Move current line into the view. */
+       if (view->lineno < view->offset) {
+               view->lineno = view->offset;
+               redraw_current_line = TRUE;
+       } else if (view->lineno >= view->offset + view->height) {
+               view->lineno = view->offset + view->height - 1;
+               redraw_current_line = TRUE;
+       }
+
+       assert(view->offset <= view->lineno && view->lineno < view->lines);
+
        /* Redraw the whole screen if scrolling is pointless. */
        if (view->height < ABS(lines)) {
                redraw_view(view);
@@ -1445,29 +1468,11 @@ do_scroll_view(struct view *view, int lines, bool redraw)
                        if (!draw_view_line(view, line))
                                break;
                }
-       }
 
-       /* Move current line into the view. */
-       if (view->lineno < view->offset) {
-               view->lineno = view->offset;
-               draw_view_line(view, 0);
-
-       } else if (view->lineno >= view->offset + view->height) {
-               if (view->lineno == view->offset + view->height) {
-                       /* Clear the hidden line so it doesn't show if the view
-                        * is scrolled up. */
-                       wmove(view->win, view->height, 0);
-                       wclrtoeol(view->win);
-               }
-               view->lineno = view->offset + view->height - 1;
-               draw_view_line(view, view->lineno - view->offset);
+               if (redraw_current_line)
+                       draw_view_line(view, view->lineno - view->offset);
        }
 
-       assert(view->offset <= view->lineno && view->lineno < view->lines);
-
-       if (!redraw)
-               return;
-
        redrawwin(view->win);
        wrefresh(view->win);
        report("");
@@ -1479,6 +1484,8 @@ scroll_view(struct view *view, enum request request)
 {
        int lines = 1;
 
+       assert(view_is_displayed(view));
+
        switch (request) {
        case REQ_SCROLL_PAGE_DOWN:
                lines = view->height;
@@ -1510,13 +1517,14 @@ scroll_view(struct view *view, enum request request)
                die("request %d not handled in switch", request);
        }
 
-       do_scroll_view(view, lines, TRUE);
+       do_scroll_view(view, lines);
 }
 
 /* Cursor moving */
 static void
-move_view(struct view *view, enum request request, bool redraw)
+move_view(struct view *view, enum request request)
 {
+       int scroll_steps = 0;
        int steps;
 
        switch (request) {
@@ -1563,39 +1571,40 @@ move_view(struct view *view, enum request request, bool redraw)
        view->lineno += steps;
        assert(0 <= view->lineno && view->lineno < view->lines);
 
-       /* Repaint the old "current" line if we be scrolling */
-       if (ABS(steps) < view->height) {
-               int prev_lineno = view->lineno - steps - view->offset;
-
-               wmove(view->win, prev_lineno, 0);
-               wclrtoeol(view->win);
-               draw_view_line(view,  prev_lineno);
-       }
-
        /* Check whether the view needs to be scrolled */
        if (view->lineno < view->offset ||
            view->lineno >= view->offset + view->height) {
+               scroll_steps = steps;
                if (steps < 0 && -steps > view->offset) {
-                       steps = -view->offset;
+                       scroll_steps = -view->offset;
 
                } else if (steps > 0) {
                        if (view->lineno == view->lines - 1 &&
                            view->lines > view->height) {
-                               steps = view->lines - view->offset - 1;
-                               if (steps >= view->height)
-                                       steps -= view->height - 1;
+                               scroll_steps = view->lines - view->offset - 1;
+                               if (scroll_steps >= view->height)
+                                       scroll_steps -= view->height - 1;
                        }
                }
+       }
 
-               do_scroll_view(view, steps, redraw);
+       if (!view_is_displayed(view)) {
+               view->offset += steps;
+               view->ops->select(view, &view->line[view->lineno]);
                return;
        }
 
-       /* Draw the current line */
-       draw_view_line(view, view->lineno - view->offset);
+       /* Repaint the old "current" line if we be scrolling */
+       if (ABS(steps) < view->height)
+               draw_view_line(view, view->lineno - steps - view->offset);
 
-       if (!redraw)
+       if (scroll_steps) {
+               do_scroll_view(view, scroll_steps);
                return;
+       }
+
+       /* Draw the current line */
+       draw_view_line(view, view->lineno - view->offset);
 
        redrawwin(view->win);
        wrefresh(view->win);
@@ -1607,7 +1616,7 @@ move_view(struct view *view, enum request request, bool redraw)
  * Searching
  */
 
-static void search_view(struct view *view, enum request request, const char *search);
+static void search_view(struct view *view, enum request request);
 
 static bool
 find_next_line(struct view *view, unsigned long lineno, struct line *line)
@@ -1626,9 +1635,6 @@ find_next_line(struct view *view, unsigned long lineno, struct line *line)
                unsigned long old_lineno = view->lineno - view->offset;
 
                view->lineno = lineno;
-
-               wmove(view->win, old_lineno, 0);
-               wclrtoeol(view->win);
                draw_view_line(view, old_lineno);
 
                draw_view_line(view, view->lineno - view->offset);
@@ -1650,7 +1656,7 @@ find_next(struct view *view, enum request request)
                if (!*opt_search)
                        report("No previous search");
                else
-                       search_view(view, request, opt_search);
+                       search_view(view, request);
                return;
        }
 
@@ -1685,7 +1691,7 @@ find_next(struct view *view, enum request request)
 }
 
 static void
-search_view(struct view *view, enum request request, const char *search)
+search_view(struct view *view, enum request request)
 {
        int regex_err;
 
@@ -1698,7 +1704,7 @@ search_view(struct view *view, enum request request, const char *search)
                        return;
        }
 
-       regex_err = regcomp(view->regex, search, REG_EXTENDED);
+       regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
        if (regex_err != 0) {
                char buf[SIZEOF_STR] = "unknown error";
 
@@ -1707,7 +1713,7 @@ search_view(struct view *view, enum request request, const char *search)
                return;
        }
 
-       string_copy(view->grep, search);
+       string_copy(view->grep, opt_search);
 
        find_next(view, request);
 }
@@ -2013,7 +2019,7 @@ open_view(struct view *prev, enum request request, enum open_flags flags)
 
                /* Scroll the view that was split if the current line is
                 * outside the new limited view. */
-               do_scroll_view(prev, lines, TRUE);
+               do_scroll_view(prev, lines);
        }
 
        if (prev && view != prev) {
@@ -2058,7 +2064,7 @@ view_driver(struct view *view, enum request request)
        case REQ_MOVE_PAGE_DOWN:
        case REQ_MOVE_FIRST_LINE:
        case REQ_MOVE_LAST_LINE:
-               move_view(view, request, TRUE);
+               move_view(view, request);
                break;
 
        case REQ_SCROLL_LINE_DOWN:
@@ -2091,14 +2097,12 @@ view_driver(struct view *view, enum request request)
                     view->parent == VIEW(REQ_VIEW_MAIN)) ||
                   (view == VIEW(REQ_VIEW_BLOB) &&
                     view->parent == VIEW(REQ_VIEW_TREE))) {
-                       bool redraw = display[1] == view;
-
                        view = view->parent;
-                       move_view(view, request, redraw);
-                       if (redraw)
+                       move_view(view, request);
+                       if (view_is_displayed(view))
                                update_view_title(view);
                } else {
-                       move_view(view, request, TRUE);
+                       move_view(view, request);
                        break;
                }
                /* Fall-through */
@@ -2143,7 +2147,7 @@ view_driver(struct view *view, enum request request)
 
        case REQ_SEARCH:
        case REQ_SEARCH_BACK:
-               search_view(view, request, opt_search);
+               search_view(view, request);
                break;
 
        case REQ_FIND_NEXT:
@@ -2208,7 +2212,7 @@ view_driver(struct view *view, enum request request)
  */
 
 static bool
-pager_draw(struct view *view, struct line *line, unsigned int lineno)
+pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
 {
        char *text = line->data;
        enum line_type type = line->type;
@@ -2217,7 +2221,7 @@ pager_draw(struct view *view, struct line *line, unsigned int lineno)
 
        wmove(view->win, lineno, 0);
 
-       if (view->offset + lineno == view->lineno) {
+       if (selected) {
                type = LINE_CURSOR;
                wchgat(view->win, -1, 0, type, NULL);
        }
@@ -2424,7 +2428,7 @@ pager_select(struct view *view, struct line *line)
        if (line->type == LINE_COMMIT) {
                char *text = line->data;
 
-               string_copy(view->ref, text + 7);
+               string_copy(view->ref, text + STRING_SIZE("commit "));
                string_copy(ref_commit, view->ref);
        }
 }
@@ -2443,7 +2447,7 @@ static struct view_ops pager_ops = {
  * Tree backend
  */
 
-/* Parse output from git ls-tree:
+/* Parse output from git-ls-tree(1):
  *
  * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26        Makefile
  * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6        README
@@ -2553,8 +2557,7 @@ tree_read(struct view *view, char *text)
 static bool
 tree_enter(struct view *view, struct line *line)
 {
-       enum open_flags flags = OPEN_DEFAULT;
-       char *data = line->data;
+       enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
        enum request request;
 
        switch (line->type) {
@@ -2573,6 +2576,7 @@ tree_enter(struct view *view, struct line *line)
                } else {
                        size_t pathlen = strlen(opt_path);
                        size_t origlen = pathlen;
+                       char *data = line->data;
                        char *basename = data + SIZEOF_TREE_ATTR;
 
                        if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
@@ -2588,10 +2592,6 @@ tree_enter(struct view *view, struct line *line)
                break;
 
        case LINE_TREE_FILE:
-               /* This causes the blob view to become split, and not having it
-                * in the tree dir case will make the blob view automatically
-                * disappear when moving to a different directory. */
-               flags |= OPEN_SPLIT;
                request = REQ_VIEW_BLOB;
                break;
 
@@ -2601,29 +2601,27 @@ tree_enter(struct view *view, struct line *line)
 
        open_view(view, request, flags);
 
-       if (!VIEW(request)->pipe)
-               return TRUE;
-
-       /* For tree views insert the path to the parent as the first line. */
-       if (request == REQ_VIEW_BLOB) {
-               /* Mirror what is showed in the title bar. */
-               string_ncopy(ref_blob, data + STRING_SIZE("100644 blob "), 40);
-               string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
-               return TRUE;
-       }
-
        return TRUE;
 }
 
 static void
 tree_select(struct view *view, struct line *line)
 {
-       if (line->type == LINE_TREE_DIR || line->type == LINE_TREE_FILE) {
-               char *text = line->data;
+       char *text = line->data;
 
-               string_ncopy(view->ref, text + STRING_SIZE("100644 blob "), 40);
-               string_copy(ref_blob, view->ref);
+       text += STRING_SIZE("100644 blob ");
+
+       if (line->type == LINE_TREE_FILE) {
+               string_ncopy(ref_blob, text, 40);
+               /* Also update the blob view's ref, since all there must always
+                * be in sync. */
+               string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
+
+       } else if (line->type != LINE_TREE_DIR) {
+               return;
        }
+
+       string_ncopy(view->ref, text, 40);
 }
 
 static struct view_ops tree_ops = {
@@ -2671,7 +2669,7 @@ struct commit {
 };
 
 static bool
-main_draw(struct view *view, struct line *line, unsigned int lineno)
+main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
 {
        char buf[DATE_COLS + 1];
        struct commit *commit = line->data;
@@ -2686,7 +2684,7 @@ main_draw(struct view *view, struct line *line, unsigned int lineno)
 
        wmove(view->win, lineno, col);
 
-       if (view->offset + lineno == view->lineno) {
+       if (selected) {
                type = LINE_CURSOR;
                wattrset(view->win, get_line_attr(type));
                wchgat(view->win, -1, 0, type, NULL);