Code

Add system-wide configuration file and new config file environment vars
[tig.git] / tig.c
diff --git a/tig.c b/tig.c
index cb8f6be7c1173c6bb983165e530782f5d0d9084a..c44409e8c85bd88bcda3522ea0c618a71d5878e0 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -72,6 +72,7 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset,
 #define REVGRAPH_MERGE 'M'
 #define REVGRAPH_BRANCH        '+'
 #define REVGRAPH_COMMIT        '*'
+#define REVGRAPH_BOUND '^'
 #define REVGRAPH_LINE  '|'
 
 #define SIZEOF_REVGRAPH        19      /* Size of revision ancestry graphics. */
@@ -105,13 +106,13 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset,
        "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
 
 #define TIG_DIFF_CMD \
-       "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
+       "git show --no-color --root --patch-with-stat --find-copies-harder -C %s 2>/dev/null"
 
 #define TIG_LOG_CMD    \
-       "git log --cc --stat -n100 %s 2>/dev/null"
+       "git log --no-color --cc --stat -n100 %s 2>/dev/null"
 
 #define TIG_MAIN_CMD \
-       "git log --topo-order --pretty=raw %s 2>/dev/null"
+       "git log --no-color --topo-order --boundary --pretty=raw %s 2>/dev/null"
 
 #define TIG_TREE_CMD   \
        "git ls-tree %s %s"
@@ -352,8 +353,8 @@ sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
        REQ_(TOGGLE_REV_GRAPH,  "Toggle revision graph visualization"), \
        REQ_(STATUS_UPDATE,     "Update file status"), \
        REQ_(STATUS_MERGE,      "Merge file using external tool"), \
+       REQ_(TREE_PARENT,       "Switch to parent directory in tree view"), \
        REQ_(EDIT,              "Open in editor"), \
-       REQ_(CHERRY_PICK,       "Cherry-pick commit to current branch"), \
        REQ_(NONE,              "Do nothing")
 
 
@@ -506,6 +507,26 @@ parse_options(int argc, char *argv[])
                if (opt[0] && opt[0] != '-')
                        break;
 
+               if (!strcmp(opt, "--")) {
+                       i++;
+                       break;
+               }
+
+               if (check_option(opt, 'v', "version", OPT_NONE)) {
+                       printf("tig version %s\n", TIG_VERSION);
+                       return FALSE;
+               }
+
+               if (check_option(opt, 'h', "help", OPT_NONE)) {
+                       printf(usage);
+                       return FALSE;
+               }
+
+               if (!strcmp(opt, "-S")) {
+                       opt_request = REQ_VIEW_STATUS;
+                       continue;
+               }
+
                if (!strcmp(opt, "-l")) {
                        opt_request = REQ_VIEW_LOG;
                        continue;
@@ -516,11 +537,6 @@ parse_options(int argc, char *argv[])
                        continue;
                }
 
-               if (!strcmp(opt, "-S")) {
-                       opt_request = REQ_VIEW_STATUS;
-                       continue;
-               }
-
                if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
                        opt_line_number = TRUE;
                        continue;
@@ -531,21 +547,6 @@ parse_options(int argc, char *argv[])
                        continue;
                }
 
-               if (check_option(opt, 'v', "version", OPT_NONE)) {
-                       printf("tig version %s\n", TIG_VERSION);
-                       return FALSE;
-               }
-
-               if (check_option(opt, 'h', "help", OPT_NONE)) {
-                       printf(usage);
-                       return FALSE;
-               }
-
-               if (!strcmp(opt, "--")) {
-                       i++;
-                       break;
-               }
-
                die("unknown option '%s'\n\n%s", opt, usage);
        }
 
@@ -559,7 +560,7 @@ parse_options(int argc, char *argv[])
                if (opt_request == REQ_VIEW_MAIN)
                        /* XXX: This is vulnerable to the user overriding
                         * options required for the main view parser. */
-                       string_copy(opt_cmd, "git log --pretty=raw");
+                       string_copy(opt_cmd, "git log --no-color --pretty=raw --boundary");
                else
                        string_copy(opt_cmd, "git");
                buf_size = strlen(opt_cmd);
@@ -627,6 +628,7 @@ LINE(MAIN_DELIM,   "",                      COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
 LINE(MAIN_TAG,     "",                 COLOR_MAGENTA,  COLOR_DEFAULT,  A_BOLD), \
 LINE(MAIN_REMOTE,  "",                 COLOR_YELLOW,   COLOR_DEFAULT,  A_BOLD), \
 LINE(MAIN_REF,     "",                 COLOR_CYAN,     COLOR_DEFAULT,  A_BOLD), \
+LINE(MAIN_REVGRAPH,"",                 COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
 LINE(TREE_DIR,     "",                 COLOR_DEFAULT,  COLOR_DEFAULT,  A_NORMAL), \
 LINE(TREE_FILE,    "",                 COLOR_DEFAULT,  COLOR_DEFAULT,  A_NORMAL), \
 LINE(STAT_SECTION, "",                 COLOR_CYAN,     COLOR_DEFAULT,  0), \
@@ -695,15 +697,15 @@ get_line_info(char *name, int namelen)
 static void
 init_colors(void)
 {
-       int default_bg = COLOR_BLACK;
-       int default_fg = COLOR_WHITE;
+       int default_bg = line_info[LINE_DEFAULT].bg;
+       int default_fg = line_info[LINE_DEFAULT].fg;
        enum line_type type;
 
        start_color();
 
-       if (use_default_colors() != ERR) {
-               default_bg = -1;
-               default_fg = -1;
+       if (assume_default_colors(default_fg, default_bg) == ERR) {
+               default_bg = COLOR_BLACK;
+               default_fg = COLOR_WHITE;
        }
 
        for (type = 0; type < ARRAY_SIZE(line_info); type++) {
@@ -788,8 +790,8 @@ static struct keybinding default_keybindings[] = {
        { ':',          REQ_PROMPT },
        { 'u',          REQ_STATUS_UPDATE },
        { 'M',          REQ_STATUS_MERGE },
+       { ',',          REQ_TREE_PARENT },
        { 'e',          REQ_EDIT },
-       { 'C',          REQ_CHERRY_PICK },
 
        /* Using the ncurses SIGWINCH handler. */
        { KEY_RESIZE,   REQ_SCREEN_RESIZE },
@@ -914,11 +916,31 @@ get_key_value(const char *name)
        return ERR;
 }
 
+static char *
+get_key_name(int key_value)
+{
+       static char key_char[] = "'X'";
+       char *seq = NULL;
+       int key;
+
+       for (key = 0; key < ARRAY_SIZE(key_table); key++)
+               if (key_table[key].value == key_value)
+                       seq = key_table[key].name;
+
+       if (seq == NULL &&
+           key_value < 127 &&
+           isprint(key_value)) {
+               key_char[1] = (char) key_value;
+               seq = key_char;
+       }
+
+       return seq ? seq : "'?'";
+}
+
 static char *
 get_key(enum request request)
 {
        static char buf[BUFSIZ];
-       static char key_char[] = "'X'";
        size_t pos = 0;
        char *sep = "";
        int i;
@@ -927,27 +949,12 @@ get_key(enum request request)
 
        for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
                struct keybinding *keybinding = &default_keybindings[i];
-               char *seq = NULL;
-               int key;
 
                if (keybinding->request != request)
                        continue;
 
-               for (key = 0; key < ARRAY_SIZE(key_table); key++)
-                       if (key_table[key].value == keybinding->alias)
-                               seq = key_table[key].name;
-
-               if (seq == NULL &&
-                   keybinding->alias < 127 &&
-                   isprint(keybinding->alias)) {
-                       key_char[1] = (char) keybinding->alias;
-                       seq = key_char;
-               }
-
-               if (!seq)
-                       seq = "'?'";
-
-               if (!string_format_from(buf, &pos, "%s%s", sep, seq))
+               if (!string_format_from(buf, &pos, "%s%s", sep,
+                                       get_key_name(keybinding->alias)))
                        return "Too many keybindings!";
                sep = ", ";
        }
@@ -955,6 +962,67 @@ get_key(enum request request)
        return buf;
 }
 
+struct run_request {
+       enum keymap keymap;
+       int key;
+       char cmd[SIZEOF_STR];
+};
+
+static struct run_request *run_request;
+static size_t run_requests;
+
+static enum request
+add_run_request(enum keymap keymap, int key, int argc, char **argv)
+{
+       struct run_request *tmp;
+       struct run_request req = { keymap, key };
+       size_t bufpos;
+
+       for (bufpos = 0; argc > 0; argc--, argv++)
+               if (!string_format_from(req.cmd, &bufpos, "%s ", *argv))
+                       return REQ_NONE;
+
+       req.cmd[bufpos - 1] = 0;
+
+       tmp = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
+       if (!tmp)
+               return REQ_NONE;
+
+       run_request = tmp;
+       run_request[run_requests++] = req;
+
+       return REQ_NONE + run_requests;
+}
+
+static struct run_request *
+get_run_request(enum request request)
+{
+       if (request <= REQ_NONE)
+               return NULL;
+       return &run_request[request - REQ_NONE - 1];
+}
+
+static void
+add_builtin_run_requests(void)
+{
+       struct {
+               enum keymap keymap;
+               int key;
+               char *argv[1];
+       } reqs[] = {
+               { KEYMAP_MAIN,    'C', { "git cherry-pick %(commit)" } },
+               { KEYMAP_GENERIC, 'G', { "git gc" } },
+       };
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(reqs); i++) {
+               enum request req;
+
+               req = add_run_request(reqs[i].keymap, reqs[i].key, 1, reqs[i].argv);
+               if (req != REQ_NONE)
+                       add_keybinding(reqs[i].keymap, req, reqs[i].key);
+       }
+}
 
 /*
  * User config file handling.
@@ -1087,7 +1155,7 @@ option_bind_command(int argc, char *argv[])
        int keymap;
        int key;
 
-       if (argc != 3) {
+       if (argc < 3) {
                config_msg = "Wrong number of arguments given to bind command";
                return ERR;
        }
@@ -1104,6 +1172,21 @@ option_bind_command(int argc, char *argv[])
        }
 
        request = get_request(argv[2]);
+       if (request == REQ_NONE) {
+               const char *obsolete[] = { "cherry-pick" };
+               size_t namelen = strlen(argv[2]);
+               int i;
+
+               for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
+                       if (namelen == strlen(obsolete[i]) &&
+                           !string_enum_compare(obsolete[i], argv[2], namelen)) {
+                               config_msg = "Obsolete request name";
+                               return ERR;
+                       }
+               }
+       }
+       if (request == REQ_NONE && *argv[2]++ == '!')
+               request = add_run_request(keymap, key, argc - 2, argv + 2);
        if (request == REQ_NONE) {
                config_msg = "Unknown request name";
                return ERR;
@@ -1124,9 +1207,10 @@ set_option(char *opt, char *value)
        /* Tokenize */
        while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
                argv[argc++] = value;
-
                value += valuelen;
-               if (!*value)
+
+               /* Nothing more to tokenize or last available token. */
+               if (!*value || argc >= ARRAY_SIZE(argv))
                        break;
 
                *value++ = 0;
@@ -1187,27 +1271,47 @@ read_option(char *opt, size_t optlen, char *value, size_t valuelen)
        return OK;
 }
 
-static int
-load_options(void)
+static void
+load_option_file(const char *path)
 {
-       char *home = getenv("HOME");
-       char buf[SIZEOF_STR];
        FILE *file;
 
-       config_lineno = 0;
-       config_errors = FALSE;
-
-       if (!home || !string_format(buf, "%s/.tigrc", home))
-               return ERR;
-
        /* It's ok that the file doesn't exist. */
-       file = fopen(buf, "r");
+       file = fopen(path, "r");
        if (!file)
-               return OK;
+               return;
+
+       config_lineno = 0;
+       config_errors = FALSE;
 
        if (read_properties(file, " \t", read_option) == ERR ||
            config_errors == TRUE)
-               fprintf(stderr, "Errors while loading %s.\n", buf);
+               fprintf(stderr, "Errors while loading %s.\n", path);
+}
+
+static int
+load_options(void)
+{
+       char *home = getenv("HOME");
+       char *tigrc_user = getenv("TIGRC_USER");
+       char *tigrc_system = getenv("TIGRC_SYSTEM");
+       char buf[SIZEOF_STR];
+
+       add_builtin_run_requests();
+
+       if (!tigrc_system) {
+               if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
+                       return ERR;
+               tigrc_system = buf;
+       }
+       load_option_file(tigrc_system);
+
+       if (!tigrc_user) {
+               if (!home || !string_format(buf, "%s/.tigrc", home))
+                       return ERR;
+               tigrc_user = buf;
+       }
+       load_option_file(tigrc_user);
 
        return OK;
 }
@@ -2194,6 +2298,56 @@ open_editor(bool from_root, const char *file)
        }
 }
 
+static void
+open_run_request(enum request request)
+{
+       struct run_request *req = get_run_request(request);
+       char buf[SIZEOF_STR * 2];
+       size_t bufpos;
+       char *cmd;
+
+       if (!req) {
+               report("Unknown run request");
+               return;
+       }
+
+       bufpos = 0;
+       cmd = req->cmd;
+
+       while (cmd) {
+               char *next = strstr(cmd, "%(");
+               int len = next - cmd;
+               char *value;
+
+               if (!next) {
+                       len = strlen(cmd);
+                       value = "";
+
+               } else if (!strncmp(next, "%(head)", 7)) {
+                       value = ref_head;
+
+               } else if (!strncmp(next, "%(commit)", 9)) {
+                       value = ref_commit;
+
+               } else if (!strncmp(next, "%(blob)", 7)) {
+                       value = ref_blob;
+
+               } else {
+                       report("Unknown replacement in run request: `%s`", req->cmd);
+                       return;
+               }
+
+               if (!string_format_from(buf, &bufpos, "%.*s%s", len, cmd, value))
+                       return;
+
+               if (next)
+                       next = strchr(next, ')') + 1;
+               cmd = next;
+       }
+
+       open_external_viewer(buf);
+}
+
 /*
  * User request switch noodle
  */
@@ -2208,6 +2362,11 @@ view_driver(struct view *view, enum request request)
                return TRUE;
        }
 
+       if (request > REQ_NONE) {
+               open_run_request(request);
+               return TRUE;
+       }
+
        if (view && view->lines) {
                request = view->ops->request(view, request, &view->line[view->lineno]);
                if (request == REQ_NONE)
@@ -2369,9 +2528,6 @@ view_driver(struct view *view, enum request request)
                report("Nothing to edit");
                break;
 
-       case REQ_CHERRY_PICK:
-               report("Nothing to cherry-pick");
-               break;
 
        case REQ_ENTER:
                report("Nothing to enter");
@@ -2660,6 +2816,8 @@ help_open(struct view *view)
                if (!req_info[i].request)
                        lines++;
 
+       lines += run_requests + 1;
+
        view->line = calloc(lines, sizeof(*view->line));
        if (!view->line)
                return FALSE;
@@ -2688,6 +2846,30 @@ help_open(struct view *view)
                add_line_text(view, buf, LINE_DEFAULT);
        }
 
+       if (run_requests) {
+               add_line_text(view, "", LINE_DEFAULT);
+               add_line_text(view, "External commands:", LINE_DEFAULT);
+       }
+
+       for (i = 0; i < run_requests; i++) {
+               struct run_request *req = get_run_request(REQ_NONE + i + 1);
+               char *key;
+
+               if (!req)
+                       continue;
+
+               key = get_key_name(req->key);
+               if (!*key)
+                       key = "(no key defined)";
+
+               if (!string_format(buf, "    %-10s %-14s `%s`",
+                                  keymap_table[req->keymap].name,
+                                  key, req->cmd))
+                       continue;
+
+               add_line_text(view, buf, LINE_DEFAULT);
+       }
+
        return TRUE;
 }
 
@@ -2859,6 +3041,16 @@ tree_request(struct view *view, enum request request, struct line *line)
 {
        enum open_flags flags;
 
+       if (request == REQ_TREE_PARENT) {
+               if (*opt_path) {
+                       /* fake 'cd  ..' */
+                       request = REQ_ENTER;
+                       line = &view->line[1];
+               } else {
+                       /* quit view if at top of tree */
+                       return REQ_VIEW_CLOSE;
+               }
+       }
        if (request != REQ_ENTER)
                return request;
 
@@ -3100,8 +3292,11 @@ error_out:
 #define STATUS_LIST_OTHER_CMD \
        "git ls-files -z --others --exclude-per-directory=.gitignore"
 
-#define STATUS_DIFF_SHOW_CMD \
-       "git diff --root --patch-with-stat --find-copies-harder -B -C %s -- %s 2>/dev/null"
+#define STATUS_DIFF_INDEX_SHOW_CMD \
+       "git diff-index --root --patch-with-stat --find-copies-harder -C --cached HEAD -- %s 2>/dev/null"
+
+#define STATUS_DIFF_FILES_SHOW_CMD \
+       "git diff-files --root --patch-with-stat --find-copies-harder -C -- %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
@@ -3232,8 +3427,8 @@ status_enter(struct view *view, struct line *line)
 
        switch (line->type) {
        case LINE_STAT_STAGED:
-               if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
-                                       "--cached", path))
+               if (!string_format_from(opt_cmd, &cmdsize,
+                                       STATUS_DIFF_INDEX_SHOW_CMD, path))
                        return REQ_QUIT;
                if (status)
                        info = "Staged changes to %s";
@@ -3242,8 +3437,8 @@ status_enter(struct view *view, struct line *line)
                break;
 
        case LINE_STAT_UNSTAGED:
-               if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
-                                       "", path))
+               if (!string_format_from(opt_cmd, &cmdsize,
+                                       STATUS_DIFF_FILES_SHOW_CMD, path))
                        return REQ_QUIT;
                if (status)
                        info = "Unstaged changes to %s";
@@ -3266,7 +3461,7 @@ status_enter(struct view *view, struct line *line)
                break;
 
        default:
-               die("w00t");
+               die("line type %d not handled in switch", line->type);
        }
 
        open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | OPEN_SPLIT);
@@ -3320,7 +3515,7 @@ status_update_file(struct view *view, struct status *status, enum line_type type
                break;
 
        default:
-               die("w00t");
+               die("line type %d not handled in switch", type);
        }
 
        pipe = popen(cmd, "w");
@@ -3373,6 +3568,10 @@ status_request(struct view *view, enum request request, struct line *line)
                break;
 
        case REQ_STATUS_MERGE:
+               if (!status || status->status != 'U') {
+                       report("Merging only possible for files with unmerged status ('U').");
+                       return REQ_NONE;
+               }
                open_mergetool(status->name);
                break;
 
@@ -3435,7 +3634,7 @@ status_select(struct view *view, struct line *line)
                break;
 
        default:
-               die("w00t");
+               die("line type %d not handled in switch", line->type);
        }
 
        if (status && status->status == 'U') {
@@ -3680,6 +3879,7 @@ struct rev_graph {
        size_t size;
        struct commit *commit;
        size_t pos;
+       unsigned int boundary:1;
 };
 
 /* Parents of the commit being visualized. */
@@ -3752,7 +3952,9 @@ get_rev_graph_symbol(struct rev_graph *graph)
 {
        chtype symbol;
 
-       if (graph->parents->size == 0)
+       if (graph->boundary)
+               symbol = REVGRAPH_BOUND;
+       else if (graph->parents->size == 0)
                symbol = REVGRAPH_INIT;
        else if (graph_parent_is_merge(graph))
                symbol = REVGRAPH_MERGE;
@@ -3834,7 +4036,7 @@ prepare_rev_graph(struct rev_graph *graph)
        }
 
        /* Interleave the new revision parent(s). */
-       for (i = 0; i < graph->parents->size; i++)
+       for (i = 0; !graph->boundary && i < graph->parents->size; i++)
                push_rev_graph(graph->next, graph->parents->rev[i]);
 
        /* Lastly, put any remaining revisions. */
@@ -3918,12 +4120,12 @@ main_draw(struct view *view, struct line *line, unsigned int lineno, bool select
        }
 
        col += AUTHOR_COLS;
-       if (type != LINE_CURSOR)
-               wattrset(view->win, A_NORMAL);
 
        if (opt_rev_graph && commit->graph_size) {
                size_t i;
 
+               if (type != LINE_CURSOR)
+                       wattrset(view->win, get_line_attr(LINE_MAIN_REVGRAPH));
                wmove(view->win, lineno, col);
                /* Using waddch() instead of waddnstr() ensures that
                 * they'll be rendered correctly for the cursor line. */
@@ -3933,6 +4135,8 @@ main_draw(struct view *view, struct line *line, unsigned int lineno, bool select
                waddch(view->win, ' ');
                col += commit->graph_size + 1;
        }
+       if (type != LINE_CURSOR)
+               wattrset(view->win, A_NORMAL);
 
        wmove(view->win, lineno, col);
 
@@ -3992,7 +4196,13 @@ main_read(struct view *view, char *line)
                if (!commit)
                        return FALSE;
 
-               string_copy_rev(commit->id, line + STRING_SIZE("commit "));
+               line += STRING_SIZE("commit ");
+               if (*line == '-') {
+                       graph->boundary = 1;
+                       line++;
+               }
+
+               string_copy_rev(commit->id, line);
                commit->refs = get_refs(commit->id);
                graph->commit = commit;
                add_line_data(view, commit, LINE_MAIN_COMMIT);
@@ -4083,20 +4293,6 @@ main_read(struct view *view, char *line)
        return TRUE;
 }
 
-static void
-cherry_pick_commit(struct commit *commit)
-{
-       char cmd[SIZEOF_STR];
-       char *cherry_pick = getenv("TIG_CHERRY_PICK");
-
-       if (!cherry_pick)
-               cherry_pick = "git cherry-pick";
-
-       if (string_format(cmd, "%s %s", cherry_pick, commit->id)) {
-               open_external_viewer(cmd);
-       }
-}
-
 static enum request
 main_request(struct view *view, enum request request, struct line *line)
 {
@@ -4104,8 +4300,6 @@ main_request(struct view *view, enum request request, struct line *line)
 
        if (request == REQ_ENTER)
                open_view(view, REQ_VIEW_DIFF, flags);
-       else if (request == REQ_CHERRY_PICK)
-               cherry_pick_commit(line->data);
        else
                return request;