+ if ((view == VIEW(REQ_VIEW_DIFF) &&
+ view->parent == VIEW(REQ_VIEW_MAIN)) ||
+ (view == VIEW(REQ_VIEW_STAGE) &&
+ view->parent == VIEW(REQ_VIEW_STATUS)) ||
+ (view == VIEW(REQ_VIEW_BLOB) &&
+ view->parent == VIEW(REQ_VIEW_TREE))) {
+ int line;
+
+ view = view->parent;
+ line = view->lineno;
+ move_view(view, request);
+ if (view_is_displayed(view))
+ update_view_title(view);
+ if (line != view->lineno)
+ view->ops->request(view, REQ_ENTER,
+ &view->line[view->lineno]);
+
+ } else {
+ move_view(view, request);
+ }
+ break;
+
+ case REQ_VIEW_NEXT:
+ {
+ int nviews = displayed_views();
+ int next_view = (current_view + 1) % nviews;
+
+ if (next_view == current_view) {
+ report("Only one view is displayed");
+ break;
+ }
+
+ current_view = next_view;
+ /* Blur out the title of the previous view. */
+ update_view_title(view);
+ report("");
+ break;
+ }
+ case REQ_TOGGLE_LINENO:
+ opt_line_number = !opt_line_number;
+ redraw_display();
+ break;
+
+ case REQ_TOGGLE_REV_GRAPH:
+ opt_rev_graph = !opt_rev_graph;
+ redraw_display();
+ break;
+
+ case REQ_PROMPT:
+ /* Always reload^Wrerun commands from the prompt. */
+ open_view(view, opt_request, OPEN_RELOAD);
+ break;
+
+ case REQ_SEARCH:
+ case REQ_SEARCH_BACK:
+ search_view(view, request);
+ break;
+
+ case REQ_FIND_NEXT:
+ case REQ_FIND_PREV:
+ find_next(view, request);
+ break;
+
+ case REQ_STOP_LOADING:
+ for (i = 0; i < ARRAY_SIZE(views); i++) {
+ view = &views[i];
+ if (view->pipe)
+ report("Stopped loading the %s view", view->name),
+ end_update(view);
+ }
+ break;
+
+ case REQ_SHOW_VERSION:
+ report("tig-%s (built %s)", TIG_VERSION, __DATE__);
+ return TRUE;
+
+ case REQ_SCREEN_RESIZE:
+ resize_display();
+ /* Fall-through */
+ case REQ_SCREEN_REDRAW:
+ redraw_display();
+ break;
+
+ case REQ_EDIT:
+ report("Nothing to edit");
+ break;
+
+ case REQ_ENTER:
+ report("Nothing to enter");
+ break;
+
+ case REQ_NONE:
+ doupdate();
+ return TRUE;
+
+ case REQ_VIEW_CLOSE:
+ /* XXX: Mark closed views by letting view->parent point to the
+ * view itself. Parents to closed view should never be
+ * followed. */
+ if (view->parent &&
+ view->parent->parent != view->parent) {
+ memset(display, 0, sizeof(display));
+ current_view = 0;
+ display[current_view] = view->parent;
+ view->parent = view;
+ resize_display();
+ redraw_display();
+ break;
+ }
+ /* Fall-through */
+ case REQ_QUIT:
+ return FALSE;
+
+ default:
+ /* An unknown key will show most commonly used commands. */
+ report("Unknown key, press 'h' for help");
+ return TRUE;
+ }
+
+ return TRUE;
+}
+
+
+/*
+ * Pager backend
+ */
+
+static bool
+pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
+{
+ char *text = line->data;
+ enum line_type type = line->type;
+ int textlen = strlen(text);
+ int attr;
+
+ wmove(view->win, lineno, 0);
+
+ if (selected) {
+ type = LINE_CURSOR;
+ wchgat(view->win, -1, 0, type, NULL);
+ }
+
+ attr = get_line_attr(type);
+ wattrset(view->win, attr);
+
+ if (opt_line_number || opt_tab_size < TABSIZE) {
+ static char spaces[] = " ";
+ int col_offset = 0, col = 0;
+
+ if (opt_line_number) {
+ unsigned long real_lineno = view->offset + lineno + 1;
+
+ if (real_lineno == 1 ||
+ (real_lineno % opt_num_interval) == 0) {
+ wprintw(view->win, "%.*d", view->digits, real_lineno);
+
+ } else {
+ waddnstr(view->win, spaces,
+ MIN(view->digits, STRING_SIZE(spaces)));
+ }
+ waddstr(view->win, ": ");
+ col_offset = view->digits + 2;
+ }
+
+ while (text && col_offset + col < view->width) {
+ int cols_max = view->width - col_offset - col;
+ char *pos = text;
+ int cols;
+
+ if (*text == '\t') {
+ text++;
+ assert(sizeof(spaces) > TABSIZE);
+ pos = spaces;
+ cols = opt_tab_size - (col % opt_tab_size);
+
+ } else {
+ text = strchr(text, '\t');
+ cols = line ? text - pos : strlen(pos);
+ }
+
+ waddnstr(view->win, pos, MIN(cols, cols_max));
+ col += cols;
+ }
+
+ } else {
+ int col = 0, pos = 0;
+
+ for (; pos < textlen && col < view->width; pos++, col++)
+ if (text[pos] == '\t')
+ col += TABSIZE - (col % TABSIZE) - 1;
+
+ waddnstr(view->win, text, pos);
+ }
+
+ return TRUE;
+}
+
+static bool
+add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
+{
+ char refbuf[SIZEOF_STR];
+ char *ref = NULL;
+ FILE *pipe;
+
+ if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
+ return TRUE;
+
+ pipe = popen(refbuf, "r");
+ if (!pipe)
+ return TRUE;
+
+ if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
+ ref = chomp_string(ref);
+ pclose(pipe);
+
+ if (!ref || !*ref)
+ return TRUE;
+
+ /* This is the only fatal call, since it can "corrupt" the buffer. */
+ if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
+ return FALSE;
+
+ return TRUE;
+}
+
+static void
+add_pager_refs(struct view *view, struct line *line)
+{
+ char buf[SIZEOF_STR];
+ char *commit_id = line->data + STRING_SIZE("commit ");
+ struct ref **refs;
+ size_t bufpos = 0, refpos = 0;
+ const char *sep = "Refs: ";
+ bool is_tag = FALSE;
+
+ assert(line->type == LINE_COMMIT);
+
+ refs = get_refs(commit_id);
+ if (!refs) {
+ if (view == VIEW(REQ_VIEW_DIFF))
+ goto try_add_describe_ref;
+ return;
+ }
+
+ do {
+ struct ref *ref = refs[refpos];
+ char *fmt = ref->tag ? "%s[%s]" :
+ ref->remote ? "%s<%s>" : "%s%s";
+
+ if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
+ return;
+ sep = ", ";
+ if (ref->tag)
+ is_tag = TRUE;
+ } while (refs[refpos++]->next);
+
+ if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
+try_add_describe_ref:
+ /* Add <tag>-g<commit_id> "fake" reference. */
+ if (!add_describe_ref(buf, &bufpos, commit_id, sep))
+ return;
+ }
+
+ if (bufpos == 0)
+ return;
+
+ if (!realloc_lines(view, view->line_size + 1))
+ return;
+
+ add_line_text(view, buf, LINE_PP_REFS);
+}
+
+static bool
+pager_read(struct view *view, char *data)
+{
+ struct line *line;
+
+ if (!data)
+ return TRUE;
+
+ line = add_line_text(view, data, get_line_type(data));
+ if (!line)
+ return FALSE;
+
+ if (line->type == LINE_COMMIT &&
+ (view == VIEW(REQ_VIEW_DIFF) ||
+ view == VIEW(REQ_VIEW_LOG)))
+ add_pager_refs(view, line);
+
+ return TRUE;
+}
+
+static enum request
+pager_request(struct view *view, enum request request, struct line *line)
+{
+ int split = 0;
+
+ if (request != REQ_ENTER)
+ return request;
+
+ if (line->type == LINE_COMMIT &&
+ (view == VIEW(REQ_VIEW_LOG) ||
+ view == VIEW(REQ_VIEW_PAGER))) {
+ open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
+ split = 1;
+ }
+
+ /* Always scroll the view even if it was split. That way
+ * you can use Enter to scroll through the log view and
+ * split open each commit diff. */
+ scroll_view(view, REQ_SCROLL_LINE_DOWN);
+
+ /* FIXME: A minor workaround. Scrolling the view will call report("")
+ * but if we are scrolling a non-current view this won't properly
+ * update the view title. */
+ if (split)
+ update_view_title(view);
+
+ return REQ_NONE;
+}
+
+static bool
+pager_grep(struct view *view, struct line *line)
+{
+ regmatch_t pmatch;
+ char *text = line->data;
+
+ if (!*text)
+ return FALSE;
+
+ if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
+ return FALSE;
+
+ return TRUE;
+}
+
+static void
+pager_select(struct view *view, struct line *line)
+{
+ if (line->type == LINE_COMMIT) {
+ char *text = line->data + STRING_SIZE("commit ");
+
+ if (view != VIEW(REQ_VIEW_PAGER))
+ string_copy_rev(view->ref, text);
+ string_copy_rev(ref_commit, text);
+ }
+}
+
+static struct view_ops pager_ops = {
+ "line",
+ NULL,
+ pager_read,
+ pager_draw,
+ pager_request,
+ pager_grep,
+ pager_select,
+};
+
+
+/*
+ * Help backend
+ */
+
+static bool
+help_open(struct view *view)
+{
+ char buf[BUFSIZ];
+ int lines = ARRAY_SIZE(req_info) + 2;
+ int i;
+
+ if (view->lines > 0)
+ return TRUE;
+
+ for (i = 0; i < ARRAY_SIZE(req_info); i++)
+ if (!req_info[i].request)
+ lines++;
+
+ view->line = calloc(lines, sizeof(*view->line));
+ if (!view->line)
+ return FALSE;
+
+ add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
+
+ for (i = 0; i < ARRAY_SIZE(req_info); i++) {
+ char *key;
+
+ if (!req_info[i].request) {
+ add_line_text(view, "", LINE_DEFAULT);
+ add_line_text(view, req_info[i].help, LINE_DEFAULT);
+ continue;
+ }
+
+ key = get_key(req_info[i].request);
+ if (!string_format(buf, " %-25s %s", key, req_info[i].help))
+ continue;
+
+ add_line_text(view, buf, LINE_DEFAULT);
+ }
+
+ return TRUE;
+}
+
+static struct view_ops help_ops = {
+ "line",
+ help_open,
+ NULL,
+ pager_draw,
+ pager_request,
+ pager_grep,
+ pager_select,
+};
+
+
+/*
+ * Tree backend
+ */
+
+struct tree_stack_entry {
+ struct tree_stack_entry *prev; /* Entry below this in the stack */
+ unsigned long lineno; /* Line number to restore */
+ char *name; /* Position of name in opt_path */
+};
+
+/* The top of the path stack. */
+static struct tree_stack_entry *tree_stack = NULL;
+unsigned long tree_lineno = 0;
+
+static void
+pop_tree_stack_entry(void)
+{
+ struct tree_stack_entry *entry = tree_stack;
+
+ tree_lineno = entry->lineno;
+ entry->name[0] = 0;
+ tree_stack = entry->prev;
+ free(entry);
+}
+
+static void
+push_tree_stack_entry(char *name, unsigned long lineno)
+{
+ struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
+ size_t pathlen = strlen(opt_path);
+
+ if (!entry)
+ return;
+
+ entry->prev = tree_stack;
+ entry->name = opt_path + pathlen;
+ tree_stack = entry;
+
+ if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
+ pop_tree_stack_entry();
+ return;
+ }
+
+ /* Move the current line to the first tree entry. */
+ tree_lineno = 1;
+ entry->lineno = lineno;
+}
+
+/* Parse output from git-ls-tree(1):
+ *
+ * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
+ * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
+ * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
+ * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
+ */
+
+#define SIZEOF_TREE_ATTR \
+ STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
+
+#define TREE_UP_FORMAT "040000 tree %s\t.."
+
+static int
+tree_compare_entry(enum line_type type1, char *name1,
+ enum line_type type2, char *name2)
+{
+ if (type1 != type2) {
+ if (type1 == LINE_TREE_DIR)
+ return -1;
+ return 1;
+ }
+
+ return strcmp(name1, name2);
+}
+
+static bool
+tree_read(struct view *view, char *text)
+{
+ size_t textlen = text ? strlen(text) : 0;
+ char buf[SIZEOF_STR];
+ unsigned long pos;
+ enum line_type type;
+ bool first_read = view->lines == 0;
+
+ if (textlen <= SIZEOF_TREE_ATTR)
+ return FALSE;
+
+ type = text[STRING_SIZE("100644 ")] == 't'
+ ? LINE_TREE_DIR : LINE_TREE_FILE;
+
+ if (first_read) {
+ /* Add path info line */
+ if (!string_format(buf, "Directory path /%s", opt_path) ||
+ !realloc_lines(view, view->line_size + 1) ||
+ !add_line_text(view, buf, LINE_DEFAULT))
+ return FALSE;
+
+ /* Insert "link" to parent directory. */
+ if (*opt_path) {
+ if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
+ !realloc_lines(view, view->line_size + 1) ||
+ !add_line_text(view, buf, LINE_TREE_DIR))
+ return FALSE;
+ }
+ }
+
+ /* Strip the path part ... */
+ if (*opt_path) {
+ size_t pathlen = textlen - SIZEOF_TREE_ATTR;
+ size_t striplen = strlen(opt_path);
+ char *path = text + SIZEOF_TREE_ATTR;
+
+ if (pathlen > striplen)
+ memmove(path, path + striplen,
+ pathlen - striplen + 1);
+ }
+
+ /* Skip "Directory ..." and ".." line. */
+ for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
+ struct line *line = &view->line[pos];
+ char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
+ char *path2 = text + SIZEOF_TREE_ATTR;
+ int cmp = tree_compare_entry(line->type, path1, type, path2);
+
+ if (cmp <= 0)
+ continue;
+
+ text = strdup(text);
+ if (!text)
+ return FALSE;
+
+ if (view->lines > pos)
+ memmove(&view->line[pos + 1], &view->line[pos],
+ (view->lines - pos) * sizeof(*line));
+
+ line = &view->line[pos];
+ line->data = text;
+ line->type = type;
+ view->lines++;
+ return TRUE;
+ }
+
+ if (!add_line_text(view, text, type))
+ return FALSE;
+
+ if (tree_lineno > view->lineno) {
+ view->lineno = tree_lineno;
+ tree_lineno = 0;
+ }
+
+ return TRUE;
+}
+
+static enum request
+tree_request(struct view *view, enum request request, struct line *line)
+{
+ enum open_flags flags;
+
+ if (request != REQ_ENTER)
+ return request;
+
+ /* Cleanup the stack if the tree view is at a different tree. */
+ while (!*opt_path && tree_stack)
+ pop_tree_stack_entry();
+
+ switch (line->type) {
+ case LINE_TREE_DIR:
+ /* Depending on whether it is a subdir or parent (updir?) link
+ * mangle the path buffer. */
+ if (line == &view->line[1] && *opt_path) {
+ pop_tree_stack_entry();
+
+ } else {
+ char *data = line->data;
+ char *basename = data + SIZEOF_TREE_ATTR;
+
+ push_tree_stack_entry(basename, view->lineno);
+ }
+
+ /* Trees and subtrees share the same ID, so they are not not
+ * unique like blobs. */
+ flags = OPEN_RELOAD;
+ request = REQ_VIEW_TREE;
+ break;
+
+ case LINE_TREE_FILE:
+ flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
+ request = REQ_VIEW_BLOB;
+ break;
+
+ default:
+ return TRUE;
+ }
+
+ open_view(view, request, flags);
+ if (request == REQ_VIEW_TREE) {
+ view->lineno = tree_lineno;
+ }
+
+ return REQ_NONE;
+}
+
+static void
+tree_select(struct view *view, struct line *line)
+{
+ char *text = line->data + STRING_SIZE("100644 blob ");
+
+ if (line->type == LINE_TREE_FILE) {
+ string_copy_rev(ref_blob, text);
+
+ } else if (line->type != LINE_TREE_DIR) {
+ return;
+ }
+
+ string_copy_rev(view->ref, text);
+}
+
+static struct view_ops tree_ops = {
+ "file",
+ NULL,
+ tree_read,
+ pager_draw,
+ tree_request,
+ pager_grep,
+ tree_select,
+};
+
+static bool
+blob_read(struct view *view, char *line)
+{
+ return add_line_text(view, line, LINE_DEFAULT);
+}
+
+static struct view_ops blob_ops = {
+ "line",
+ NULL,
+ blob_read,
+ pager_draw,
+ pager_request,
+ pager_grep,
+ pager_select,
+};
+
+
+/*
+ * Status backend
+ */
+
+struct status {
+ char status;
+ struct {
+ mode_t mode;
+ char rev[SIZEOF_REV];
+ } old;
+ struct {
+ mode_t mode;
+ char rev[SIZEOF_REV];
+ } new;
+ char name[SIZEOF_STR];
+};
+
+static struct status stage_status;
+static enum line_type stage_line_type;
+
+/* Get fields from the diff line:
+ * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
+ */
+static inline bool
+status_get_diff(struct status *file, char *buf, size_t bufsize)
+{
+ char *old_mode = buf + 1;
+ char *new_mode = buf + 8;
+ char *old_rev = buf + 15;
+ char *new_rev = buf + 56;
+ char *status = buf + 97;
+
+ if (bufsize != 99 ||
+ old_mode[-1] != ':' ||
+ new_mode[-1] != ' ' ||
+ old_rev[-1] != ' ' ||
+ new_rev[-1] != ' ' ||
+ status[-1] != ' ')
+ return FALSE;
+
+ file->status = *status;
+
+ string_copy_rev(file->old.rev, old_rev);
+ string_copy_rev(file->new.rev, new_rev);
+
+ file->old.mode = strtoul(old_mode, NULL, 8);
+ file->new.mode = strtoul(new_mode, NULL, 8);
+
+ file->name[0] = 0;
+
+ return TRUE;
+}
+
+static bool
+status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
+{
+ struct status *file = NULL;
+ char buf[SIZEOF_STR * 4];
+ size_t bufsize = 0;
+ FILE *pipe;
+
+ pipe = popen(cmd, "r");
+ if (!pipe)
+ return FALSE;
+
+ add_line_data(view, NULL, type);
+
+ while (!feof(pipe) && !ferror(pipe)) {
+ char *sep;
+ size_t readsize;
+
+ readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
+ if (!readsize)
+ break;
+ bufsize += readsize;
+
+ /* Process while we have NUL chars. */
+ while ((sep = memchr(buf, 0, bufsize))) {
+ size_t sepsize = sep - buf + 1;
+
+ if (!file) {
+ if (!realloc_lines(view, view->line_size + 1))
+ goto error_out;
+
+ file = calloc(1, sizeof(*file));
+ if (!file)
+ goto error_out;
+
+ add_line_data(view, file, type);
+ }
+
+ /* Parse diff info part. */
+ if (!diff) {
+ file->status = '?';
+
+ } else if (!file->status) {
+ if (!status_get_diff(file, buf, sepsize))
+ goto error_out;
+
+ bufsize -= sepsize;
+ memmove(buf, sep + 1, bufsize);
+
+ sep = memchr(buf, 0, bufsize);
+ if (!sep)
+ break;
+ sepsize = sep - buf + 1;
+ }
+
+ /* git-ls-files just delivers a NUL separated
+ * list of file names similar to the second half
+ * of the git-diff-* output. */
+ string_ncopy(file->name, buf, sepsize);
+ bufsize -= sepsize;
+ memmove(buf, sep + 1, bufsize);
+ file = NULL;
+ }
+ }
+
+ if (ferror(pipe)) {
+error_out:
+ pclose(pipe);
+ return FALSE;
+ }
+
+ if (!view->line[view->lines - 1].data)
+ add_line_data(view, NULL, LINE_STAT_NONE);
+
+ pclose(pipe);
+ return TRUE;
+}
+
+#define STATUS_DIFF_INDEX_CMD "git diff-index -z --cached HEAD"
+#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_DIFF_SHOW_CMD \
+ "git diff --root --patch-with-stat --find-copies-harder -B -C %s -- %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). */
+static bool
+status_open(struct view *view)
+{
+ struct stat statbuf;
+ char exclude[SIZEOF_STR];
+ char cmd[SIZEOF_STR];
+ size_t i;
+
+ for (i = 0; i < view->lines; i++)
+ free(view->line[i].data);
+ free(view->line);
+ view->lines = view->line_size = 0;
+ view->line = NULL;
+
+ if (!realloc_lines(view, view->line_size + 6))
+ return FALSE;
+
+ 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);
+
+ if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") ||
+ sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd))
+ return FALSE;
+ }
+
+ 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))
+ return FALSE;
+
+ return TRUE;
+}
+
+static bool
+status_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
+{
+ struct status *status = line->data;
+
+ wmove(view->win, lineno, 0);
+
+ if (selected) {
+ wattrset(view->win, get_line_attr(LINE_CURSOR));
+ wchgat(view->win, -1, 0, LINE_CURSOR, NULL);
+
+ } else if (!status && line->type != LINE_STAT_NONE) {
+ wattrset(view->win, get_line_attr(LINE_STAT_SECTION));
+ wchgat(view->win, -1, 0, LINE_STAT_SECTION, NULL);
+
+ } else {
+ wattrset(view->win, get_line_attr(line->type));
+ }
+
+ if (!status) {
+ char *text;
+
+ switch (line->type) {
+ case LINE_STAT_STAGED:
+ text = "Changes to be committed:";
+ break;
+
+ case LINE_STAT_UNSTAGED:
+ text = "Changed but not updated:";
+ break;
+
+ case LINE_STAT_UNTRACKED:
+ text = "Untracked files:";
+ break;
+
+ case LINE_STAT_NONE:
+ text = " (no files)";
+ break;
+
+ default:
+ return FALSE;
+ }
+
+ waddstr(view->win, text);
+ return TRUE;
+ }
+
+ waddch(view->win, status->status);
+ if (!selected)
+ wattrset(view->win, A_NORMAL);
+ wmove(view->win, lineno, 4);
+ waddstr(view->win, status->name);
+
+ return TRUE;
+}
+
+static enum request
+status_enter(struct view *view, struct line *line)
+{
+ struct status *status = line->data;
+ char path[SIZEOF_STR] = "";
+ char *info;
+ size_t cmdsize = 0;
+
+ if (line->type == LINE_STAT_NONE ||
+ (!status && line[1].type == LINE_STAT_NONE)) {
+ report("No file to diff");
+ return REQ_NONE;
+ }
+
+ if (status && sq_quote(path, 0, status->name) >= sizeof(path))
+ return REQ_QUIT;
+
+ if (opt_cdup[0] &&
+ line->type != LINE_STAT_UNTRACKED &&
+ !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
+ return REQ_QUIT;
+
+ switch (line->type) {
+ case LINE_STAT_STAGED:
+ if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
+ "--cached", path))
+ return REQ_QUIT;
+ if (status)
+ info = "Staged changes to %s";
+ else
+ info = "Staged changes";
+ break;
+
+ case LINE_STAT_UNSTAGED:
+ if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
+ "", path))
+ return REQ_QUIT;
+ if (status)
+ info = "Unstaged changes to %s";
+ else
+ info = "Unstaged changes";
+ break;
+
+ case LINE_STAT_UNTRACKED:
+ if (opt_pipe)
+ return REQ_QUIT;
+
+
+ if (!status) {
+ report("No file to show");
+ return REQ_NONE;
+ }
+
+ opt_pipe = fopen(status->name, "r");
+ info = "Untracked file %s";
+ break;
+
+ default:
+ die("w00t");
+ }
+
+ open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | OPEN_SPLIT);
+ if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
+ if (status) {
+ stage_status = *status;
+ } else {
+ memset(&stage_status, 0, sizeof(stage_status));
+ }
+
+ stage_line_type = line->type;
+ string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.name);
+ }
+
+ return REQ_NONE;
+}
+
+
+static bool
+status_update_file(struct view *view, struct status *status, 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;
+
+ switch (type) {
+ case LINE_STAT_STAGED:
+ if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
+ status->old.mode,
+ status->old.rev,
+ status->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->name, 0))
+ return FALSE;
+
+ string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
+ break;
+
+ default:
+ die("w00t");
+ }
+
+ pipe = popen(cmd, "w");
+ if (!pipe)
+ return FALSE;
+
+ while (!ferror(pipe) && written < bufsize) {
+ written += fwrite(buf + written, 1, bufsize - written, pipe);
+ }
+
+ pclose(pipe);
+
+ if (written != bufsize)
+ return FALSE;
+
+ return TRUE;
+}
+
+static void
+status_update(struct view *view)
+{
+ struct line *line = &view->line[view->lineno];
+
+ 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) {
+ report("Nothing to update");
+ return;
+ }
+
+ } else if (!status_update_file(view, line->data, line->type)) {
+ report("Failed to update file status");
+ }
+
+ open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
+}
+
+static enum request
+status_request(struct view *view, enum request request, struct line *line)
+{
+ struct status *status = line->data;
+
+ switch (request) {
+ case REQ_STATUS_UPDATE:
+ status_update(view);
+ break;
+
+ case REQ_EDIT:
+ if (!status)
+ return request;
+
+ open_editor(view, status->name);
+ break;
+
+ case REQ_ENTER:
+ status_enter(view, line);
+ break;
+
+ default:
+ return request;
+ }
+
+ return REQ_NONE;
+}
+
+static void
+status_select(struct view *view, struct line *line)
+{
+ struct status *status = line->data;
+ char file[SIZEOF_STR] = "all files";
+ char *text;
+
+ if (status && !string_format(file, "'%s'", status->name))
+ return;
+
+ if (!status && line[1].type == LINE_STAT_NONE)
+ line++;
+
+ switch (line->type) {
+ case LINE_STAT_STAGED:
+ text = "Press %s to unstage %s for commit";
+ break;
+
+ case LINE_STAT_UNSTAGED:
+ text = "Press %s to stage %s for commit";
+ break;
+
+ case LINE_STAT_UNTRACKED:
+ text = "Press %s to stage %s for addition";
+ break;
+
+ case LINE_STAT_NONE:
+ text = "Nothing to update";
+ break;
+
+ default:
+ die("w00t");
+ }
+
+ string_format(view->ref, text, get_key(REQ_STATUS_UPDATE), file);
+}
+
+static bool
+status_grep(struct view *view, struct line *line)
+{
+ struct status *status = line->data;
+ enum { S_STATUS, S_NAME, S_END } state;
+ char buf[2] = "?";
+ regmatch_t pmatch;
+
+ if (!status)
+ return FALSE;
+
+ for (state = S_STATUS; state < S_END; state++) {
+ char *text;
+
+ switch (state) {
+ case S_NAME: text = status->name; break;
+ case S_STATUS:
+ buf[0] = status->status;
+ text = buf;
+ break;
+
+ default:
+ return FALSE;
+ }
+
+ if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static struct view_ops status_ops = {
+ "file",
+ status_open,
+ NULL,
+ status_draw,
+ status_request,
+ status_grep,
+ status_select,
+};
+
+
+static bool
+stage_diff_line(FILE *pipe, struct line *line)
+{
+ char *buf = line->data;
+ size_t bufsize = strlen(buf);
+ size_t written = 0;
+
+ while (!ferror(pipe) && written < bufsize) {
+ written += fwrite(buf + written, 1, bufsize - written, pipe);
+ }
+
+ fputc('\n', pipe);
+
+ return written == bufsize;
+}
+
+static struct line *
+stage_diff_hdr(struct view *view, struct line *line)
+{
+ int diff_hdr_dir = line->type == LINE_DIFF_CHUNK ? -1 : 1;
+ struct line *diff_hdr;
+
+ if (line->type == LINE_DIFF_CHUNK)
+ diff_hdr = line - 1;
+ else
+ diff_hdr = view->line + 1;
+
+ while (diff_hdr > view->line && diff_hdr < view->line + view->lines) {
+ if (diff_hdr->type == LINE_DIFF_HEADER)
+ return diff_hdr;
+
+ diff_hdr += diff_hdr_dir;
+ }
+
+ return NULL;
+}
+
+static bool
+stage_update_chunk(struct view *view, struct line *line)
+{
+ char cmd[SIZEOF_STR];
+ size_t cmdsize = 0;
+ struct line *diff_hdr, *diff_chunk, *diff_end;
+ FILE *pipe;
+
+ diff_hdr = stage_diff_hdr(view, line);
+ if (!diff_hdr)
+ return FALSE;
+
+ if (opt_cdup[0] &&
+ !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
+ return FALSE;
+
+ if (!string_format_from(cmd, &cmdsize,
+ "git apply --cached %s - && "
+ "git update-index -q --unmerged --refresh 2>/dev/null",
+ stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
+ return FALSE;
+
+ pipe = popen(cmd, "w");
+ if (!pipe)
+ return FALSE;
+
+ diff_end = view->line + view->lines;
+ if (line->type != LINE_DIFF_CHUNK) {
+ diff_chunk = diff_hdr;
+
+ } else {
+ for (diff_chunk = line + 1; diff_chunk < diff_end; diff_chunk++)
+ if (diff_chunk->type == LINE_DIFF_CHUNK ||
+ diff_chunk->type == LINE_DIFF_HEADER)
+ diff_end = diff_chunk;
+
+ diff_chunk = line;
+
+ while (diff_hdr->type != LINE_DIFF_CHUNK) {
+ switch (diff_hdr->type) {
+ case LINE_DIFF_HEADER:
+ case LINE_DIFF_INDEX:
+ case LINE_DIFF_ADD:
+ case LINE_DIFF_DEL:
+ break;
+
+ default:
+ diff_hdr++;
+ continue;
+ }