Code

Cleanup line matching
authorJonas Fonseca <fonseca@diku.dk>
Fri, 28 Apr 2006 02:48:50 +0000 (04:48 +0200)
committerJonas Fonseca <fonseca@antimatter.localdomain>
Fri, 28 Apr 2006 02:48:50 +0000 (04:48 +0200)
tig.c

diff --git a/tig.c b/tig.c
index a0cbfe936c11fb3c29d7a5f00ebea5b179668e35..bd0fa21c34defad9b1eacc1343abe5ffe7518f3e 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -67,7 +67,124 @@ static void report(const char *msg, ...);
 #define REQ_FIRST_LINE (REQ_OFFSET + 16)
 #define REQ_LAST_LINE  (REQ_OFFSET + 17)
 
-#define COLOR_CURSOR   42
+#define COLOR_TRANSP   (-1)
+
+
+enum line_type {
+       LINE_AUTHOR,
+       LINE_COMMIT,
+       LINE_DATE,
+       LINE_DIFF,
+       LINE_DIFF_ADD,
+       LINE_DIFF_DEL,
+       LINE_DIFF_CHUNK,
+       LINE_DIFF_TREE,
+       LINE_INDEX,
+       LINE_PARENT,
+       LINE_TREE,
+
+       LINE_UNKNOWN,
+       LINE_CURSOR,
+       LINE_STATUS,
+       LINE_TITLE,
+};
+
+struct line_info {
+       enum line_type type;
+       char *line;
+       int linelen;
+
+       int fg;
+       int bg;
+       int attr;
+};
+
+#define LINE(type, line, fg, bg, attr) \
+       { LINE_##type, (line), sizeof(line) - 1, (fg), (bg), (attr) }
+
+static struct line_info line_info[] = {
+       LINE(AUTHOR,     "Author: ",    COLOR_CYAN,     COLOR_TRANSP,   0),
+       //LINE(AUTHOR,   "author ",     COLOR_CYAN,     COLOR_TRANSP,   0),
+       LINE(COMMIT,     "commit ",     COLOR_GREEN,    COLOR_TRANSP,   0),
+       LINE(DATE,       "Date:   ",    COLOR_YELLOW,   COLOR_TRANSP,   0),
+       LINE(DIFF_ADD,   "+",           COLOR_GREEN,    COLOR_TRANSP,   0),
+       LINE(DIFF_CHUNK, "@",           COLOR_MAGENTA,  COLOR_TRANSP,   0),
+       LINE(DIFF_DEL,   "-",           COLOR_RED,      COLOR_TRANSP,   0),
+       LINE(DIFF,       "diff --git ", COLOR_YELLOW,   COLOR_TRANSP,   0),
+       LINE(DIFF_TREE,  "diff-tree ",  COLOR_BLUE,     COLOR_TRANSP,   0),
+       LINE(INDEX,      "index ",      COLOR_BLUE,     COLOR_TRANSP,   0),
+       LINE(PARENT,     "parent ",     COLOR_GREEN,    COLOR_TRANSP,   0),
+       LINE(TREE,       "tree ",       COLOR_GREEN,    COLOR_TRANSP,   0),
+
+       LINE(UNKNOWN,    "",            COLOR_TRANSP,   COLOR_TRANSP,   A_NORMAL),
+
+       LINE(CURSOR,     "",            COLOR_WHITE,    COLOR_GREEN,    A_BOLD),
+       LINE(STATUS,     "",            COLOR_GREEN,    COLOR_TRANSP,   0),
+       LINE(TITLE,      "",            COLOR_YELLOW,   COLOR_BLUE,     A_BOLD),
+};
+
+static struct line_info *
+get_line_info(char *line)
+{
+       int linelen = strlen(line);
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(line_info); i++) {
+               if (linelen < line_info[i].linelen
+                   || strncmp(line_info[i].line, line, line_info[i].linelen))
+                       continue;
+
+               return &line_info[i];
+       }
+
+       return NULL;
+}
+
+static enum line_type
+get_line_type(char *line)
+{
+       struct line_info *info = get_line_info(line);
+
+       return info ? info->type : LINE_UNKNOWN;
+}
+
+static int
+get_line_attr(enum line_type type)
+{
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(line_info); i++)
+               if (line_info[i].type == type)
+                       return COLOR_PAIR(line_info[i].type) | line_info[i].attr;
+
+       return A_NORMAL;
+}
+
+static void
+init_colors(void)
+{
+       int transparent_bg = COLOR_BLACK;
+       int transparent_fg = COLOR_WHITE;
+       int i;
+
+       start_color();
+
+       if (use_default_colors() != ERR) {
+               transparent_bg = -1;
+               transparent_fg = -1;
+       }
+
+       for (i = 0; i < ARRAY_SIZE(line_info); i++) {
+               struct line_info *info = &line_info[i];
+               int bg = info->bg == COLOR_TRANSP ? transparent_bg : info->bg;
+               int fg = info->fg == COLOR_TRANSP ? transparent_fg : info->fg;
+
+               init_pair(info->type, fg, bg);
+       }
+}
+
+
+
 
 /**
  * KEYS
@@ -109,14 +226,14 @@ struct keymap keymap[] = {
        { 'j',          REQ_NEXT_LINE },
        { KEY_HOME,     REQ_FIRST_LINE },
        { KEY_END,      REQ_LAST_LINE },
+       { KEY_NPAGE,    REQ_NEXT_PAGE },
+       { KEY_PPAGE,    REQ_PREV_PAGE },
 
        /* Scrolling */
        { KEY_IC,       REQ_SCR_BLINE }, /* scroll field backward a line */
        { KEY_DC,       REQ_SCR_FLINE }, /* scroll field forward a line */
-       { KEY_NPAGE,    REQ_SCR_FPAGE }, /* scroll field forward a page */
-       { KEY_PPAGE,    REQ_SCR_BPAGE }, /* scroll field backward a page */
-       { 'w',          REQ_SCR_FHPAGE }, /* scroll field forward half page */
-       { 's',          REQ_SCR_BHPAGE }, /* scroll field backward half page */
+       { 's',          REQ_SCR_FPAGE }, /* scroll field forward a page */
+       { 'w',          REQ_SCR_BPAGE }, /* scroll field backward a page */
 
        { 'd',          REQ_DIFF },
        { 'l',          REQ_LOG },
@@ -199,6 +316,8 @@ static int main_read(struct view *view, char *line);
 /* The status window at the bottom. Used for polling keystrokes. */
 static WINDOW *status_win;
 
+static WINDOW *title_win;
+
 #define SIZEOF_ID      1024
 #define SIZEOF_VIEWS   (REQ_VIEWS - REQ_OFFSET)
 
@@ -213,8 +332,8 @@ static struct view *display[];
 
 static struct view views[] = {
        { "diff",  DIFF_CMD,   commit_id,  pager_read,  pager_draw, sizeof(char) },
-       { "log",   LOG_CMD,    head_id,    pager_read,  pager_draw, sizeof(struct commit) },
-       { "main",  MAIN_CMD,   head_id,    main_read,   main_draw },
+       { "log",   LOG_CMD,    head_id,    pager_read,  pager_draw, sizeof(char) },
+       { "main",  MAIN_CMD,   head_id,    main_read,   main_draw,  sizeof(struct commit) },
 };
 
 static struct view *display[ARRAY_SIZE(views)];
@@ -252,6 +371,7 @@ report_position(struct view *view, int all)
               view->offset);
 }
 
+
 static void
 move_view(struct view *view, int lines)
 {
@@ -290,6 +410,7 @@ move_view(struct view *view, int lines)
 
        report_position(view, lines);
 }
+
 static void
 scroll_view(struct view *view, int request)
 {
@@ -333,28 +454,40 @@ navigate_view(struct view *view, int request)
        int steps;
 
        switch (request) {
+       case REQ_FIRST_LINE:
+               steps = -view->lineno;
+               break;
+
+       case REQ_LAST_LINE:
+               steps = view->lines - view->lineno - 1;
+               break;
+
+       case REQ_PREV_PAGE:
+               steps = view->height > view->lineno
+                     ? -view->lineno : -view->height;
+               break;
+
+       case REQ_NEXT_PAGE:
+               steps = view->lineno + view->height >= view->lines
+                     ? view->lines - view->lineno - 1 : view->height;
+               break;
+
        case REQ_PREV_LINE:
-               if (view->lineno == 0) {
-                       report("already at first line");
-                       return;
-               }
                steps = -1;
                break;
 
        case REQ_NEXT_LINE:
-               if (view->lineno + 1 >= view->lines) {
-                       report("already at last line");
-                       return;
-               }
                steps = 1;
                break;
+       }
 
-       case REQ_FIRST_LINE:
-               steps = -view->lineno;
-               break;
+       if (steps < 0 && view->lineno == 0) {
+               report("already at first line");
+               return;
 
-       case REQ_LAST_LINE:
-               steps = view->lines - view->lineno - 1;
+       } else if (steps > 0 && view->lineno + 1 >= view->lines) {
+               report("already at last line");
+               return;
        }
 
        view->lineno += steps;
@@ -364,7 +497,10 @@ navigate_view(struct view *view, int request)
            view->lineno >= view->offset + view->height) {
                if (steps < 0 && -steps > view->offset) {
                        steps = -view->offset;
+               } else if (steps > 0 && steps > view->height) {
+                       steps -= view->height - 1;
                }
+
                move_view(view, steps);
                return;
        }
@@ -386,10 +522,10 @@ resize_view(struct view *view)
 
        if (view->win) {
                mvwin(view->win, 0, 0);
-               wresize(view->win, lines - 1, cols);
+               wresize(view->win, lines - 2, cols);
 
        } else {
-               view->win = newwin(lines - 1, 0, 0, 0);
+               view->win = newwin(lines - 2, 0, 0, 0);
                if (!view->win) {
                        report("failed to create %s view", view->name);
                        return;
@@ -565,6 +701,8 @@ view_driver(struct view *view, int key)
        case REQ_PREV_LINE:
        case REQ_FIRST_LINE:
        case REQ_LAST_LINE:
+       case REQ_NEXT_PAGE:
+       case REQ_PREV_PAGE:
                if (view)
                        navigate_view(view, request);
                break;
@@ -620,57 +758,26 @@ view_driver(struct view *view, int key)
  * Rendering
  */
 
-#define ATTR(line, attr) { (line), sizeof(line) - 1, (attr) }
-
-struct attr {
-       char *line;
-       int linelen;
-       int attr;
-};
-
-static struct attr attrs[] = {
-       ATTR("commit ",         COLOR_PAIR(COLOR_GREEN)),
-       ATTR("Author: ",        COLOR_PAIR(COLOR_CYAN)),
-       ATTR("Date:   ",        COLOR_PAIR(COLOR_YELLOW)),
-       ATTR("diff --git ",     COLOR_PAIR(COLOR_YELLOW)),
-       ATTR("diff-tree ",      COLOR_PAIR(COLOR_BLUE)),
-       ATTR("index ",          COLOR_PAIR(COLOR_BLUE)),
-       ATTR("-",               COLOR_PAIR(COLOR_RED)),
-       ATTR("+",               COLOR_PAIR(COLOR_GREEN)),
-       ATTR("@",               COLOR_PAIR(COLOR_MAGENTA)),
-};
-
 static int
 pager_draw(struct view *view, unsigned int lineno)
 {
+       enum line_type type;
        char *line;
-       int linelen;
-       int attr = A_NORMAL;
-       int i;
+       int attr;
 
        if (view->offset + lineno >= view->lines)
                return FALSE;
 
        line = view->line[view->offset + lineno];
-       if (!line) return FALSE;
-
-       linelen = strlen(line);
-
-       for (i = 0; i < ARRAY_SIZE(attrs); i++) {
-               if (linelen < attrs[i].linelen
-                   || strncmp(attrs[i].line, line, attrs[i].linelen))
-                       continue;
-
-               attr = attrs[i].attr;
-               break;
-       }
+       type = get_line_type(line);
 
        if (view->offset + lineno == view->lineno) {
-               if (i == 0)
+               if (type == LINE_COMMIT)
                        strncpy(commit_id, line + 7, SIZEOF_ID);
-               attr = COLOR_PAIR(COLOR_CURSOR) | A_BOLD;
+               type = LINE_CURSOR;
        }
 
+       attr = get_line_attr(type);
        wattrset(view->win, attr);
        //mvwprintw(view->win, lineno, 0, "%4d: %s", view->offset + lineno, line);
        mvwaddstr(view->win, lineno, 0, line);
@@ -693,7 +800,7 @@ static int
 main_draw(struct view *view, unsigned int lineno)
 {
        struct commit *commit;
-       int attr = A_NORMAL;
+       enum line_type type;
 
        if (view->offset + lineno >= view->lines)
                return FALSE;
@@ -701,15 +808,15 @@ main_draw(struct view *view, unsigned int lineno)
        commit = view->line[view->offset + lineno];
        if (!commit) return FALSE;
 
-       attr = attrs[0].attr;
-
        if (view->offset + lineno == view->lineno) {
                strncpy(commit_id, commit->id, SIZEOF_ID);
-               attr = COLOR_PAIR(COLOR_CURSOR) | A_BOLD;
+               type = LINE_CURSOR;
+       } else {
+               type = LINE_COMMIT;
        }
 
        mvwaddch(view->win, lineno, 0, ACS_LTEE);
-       wattrset(view->win, attr);
+       wattrset(view->win, get_line_attr(type));
        mvwaddstr(view->win, lineno, 2, commit->title);
        wattrset(view->win, A_NORMAL);
 
@@ -719,32 +826,22 @@ main_draw(struct view *view, unsigned int lineno)
 static int
 main_read(struct view *view, char *line)
 {
-       int linelen = strlen(line);
-       int i;
-
-       for (i = 0; i < ARRAY_SIZE(attrs); i++) {
-               if (linelen < attrs[i].linelen
-                   || strncmp(attrs[i].line, line, attrs[i].linelen))
-                       continue;
-               break;
-       }
-
-       if (i == 0) {
-               struct commit *commit;
+       enum line_type type = get_line_type(line);
+       struct commit *commit;
 
+       switch (type) {
+       case LINE_COMMIT:
                commit = calloc(1, sizeof(struct commit));
                if (!commit)
                        return FALSE;
 
                view->line[view->lines++] = commit;
-
                strncpy(commit->id, line + 7, 41);
+               break;
 
-       } else {
-               struct commit *commit = view->line[view->lines - 1];
-
+       default:
+               commit = view->line[view->lines - 1];
                if (!commit->title[0] &&
-                   linelen > 5 &&
                    !strncmp(line, "    ", 4) &&
                    !isspace(line[5]))
                        strncpy(commit->title, line + 4, sizeof(commit->title));
@@ -763,6 +860,8 @@ quit(int sig)
 {
        if (status_win)
                delwin(status_win);
+       if (title_win)
+               delwin(title_win);
        endwin();
 
        /* FIXME: Shutdown gracefully. */
@@ -803,27 +902,12 @@ report(const char *msg, ...)
        wrefresh(status_win);
 
        va_end(args);
-}
-
-static void
-init_colors(void)
-{
-       int bg = COLOR_BLACK;
 
-       start_color();
+       werase(title_win);
+       wmove(title_win, 0, 0);
+       wprintw(title_win, "commit %s", commit_id);
+       wrefresh(title_win);
 
-       if (use_default_colors() != ERR)
-               bg = -1;
-
-       init_pair(COLOR_BLACK,   COLOR_BLACK,   bg);
-       init_pair(COLOR_GREEN,   COLOR_GREEN,   bg);
-       init_pair(COLOR_RED,     COLOR_RED,     bg);
-       init_pair(COLOR_CYAN,    COLOR_CYAN,    bg);
-       init_pair(COLOR_WHITE,   COLOR_WHITE,   bg);
-       init_pair(COLOR_MAGENTA, COLOR_MAGENTA, bg);
-       init_pair(COLOR_BLUE,    COLOR_BLUE,    bg);
-       init_pair(COLOR_YELLOW,  COLOR_YELLOW,  bg);
-       init_pair(COLOR_CURSOR,  COLOR_WHITE,   COLOR_GREEN);
 }
 
 int
@@ -849,9 +933,14 @@ main(int argc, char *argv[])
        if (!status_win)
                die("Failed to create status window");
 
+       title_win = newwin(1, 0, y - 2, 0);
+       if (!title_win)
+               die("Failed to create title window");
+
        /* Enable keyboard mapping */
        keypad(status_win, TRUE);
-       wattrset(status_win, COLOR_PAIR(COLOR_GREEN));
+       wbkgdset(status_win, get_line_attr(LINE_STATUS));
+       wbkgdset(title_win, get_line_attr(LINE_TITLE));
 
        while (view_driver(display[current_view], request)) {
                struct view *view;
@@ -869,8 +958,12 @@ main(int argc, char *argv[])
                        int lines, cols;
 
                        getmaxyx(stdscr, lines, cols);
+
                        mvwin(status_win, lines - 1, 0);
                        wresize(status_win, 1, cols - 1);
+
+                       mvwin(title_win, lines - 2, 0);
+                       wresize(title_win, 1, cols - 1);
                }
        }