+/* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
+ * See license info at the bottom. */
/**
* TIG(1)
* ======
* SYNOPSIS
* --------
* [verse]
- * tig
- * tig log [git log options]
- * tig diff [git diff options]
- * tig < [git log or git diff output]
+ * tig [options]
+ * tig [options] [--] [git log options]
+ * tig [options] log [git log options]
+ * tig [options] diff [git diff options]
+ * tig [options] show [git show options]
+ * tig [options] < [git command output]
*
* DESCRIPTION
* -----------
* Browse changes in a git repository.
- *
- * OPTIONS
- * -------
- *
- * None.
- *
**/
-#define DEBUG
+#ifndef VERSION
+#define VERSION "tig-0.1"
+#endif
#ifndef DEBUG
#define NDEBUG
#endif
+#include <assert.h>
+#include <errno.h>
+#include <ctype.h>
+#include <signal.h>
#include <stdarg.h>
-#include <stdlib.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
-#include <signal.h>
-#include <assert.h>
+#include <unistd.h>
+#include <time.h>
#include <curses.h>
-#include <form.h>
static void die(const char *err, ...);
static void report(const char *msg, ...);
+static void set_nonblocking_input(bool loading);
+
+#define ABS(x) ((x) >= 0 ? (x) : -(x))
+#define MIN(x, y) ((x) < (y) ? (x) : (y))
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
+#define STRING_SIZE(x) (sizeof(x) - 1)
+
+#define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
+#define SIZEOF_CMD 1024 /* Size of command buffer. */
+
+/* This color name can be used to refer to the default term colors. */
+#define COLOR_DEFAULT (-1)
+
+/* The format and size of the date column in the main view. */
+#define DATE_FORMAT "%Y-%m-%d %H:%M"
+#define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
+
+/* The default interval between line numbers. */
+#define NUMBER_INTERVAL 1
-#define KEY_TAB 9
+#define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
+
+/* Some ascii-shorthands fitted into the ncurses namespace. */
+#define KEY_TAB '\t'
+#define KEY_RETURN '\r'
#define KEY_ESC 27
-#define KEY_DEL 127
-#define REQ_OFFSET (MAX_COMMAND + 1)
+/* User action requests. */
+enum request {
+ /* Offset all requests to avoid conflicts with ncurses getch values. */
+ REQ_OFFSET = KEY_MAX + 1,
+
+ /* XXX: Keep the view request first and in sync with views[]. */
+ REQ_VIEW_MAIN,
+ REQ_VIEW_DIFF,
+ REQ_VIEW_LOG,
+ REQ_VIEW_HELP,
+ REQ_VIEW_PAGER,
+
+ REQ_ENTER,
+ REQ_QUIT,
+ REQ_PROMPT,
+ REQ_SCREEN_REDRAW,
+ REQ_SCREEN_RESIZE,
+ REQ_SCREEN_UPDATE,
+ REQ_SHOW_VERSION,
+ REQ_STOP_LOADING,
+ REQ_TOGGLE_LINE_NUMBERS,
+ REQ_VIEW_NEXT,
+
+ REQ_MOVE_UP,
+ REQ_MOVE_DOWN,
+ REQ_MOVE_PAGE_UP,
+ REQ_MOVE_PAGE_DOWN,
+ REQ_MOVE_FIRST_LINE,
+ REQ_MOVE_LAST_LINE,
+
+ REQ_SCROLL_LINE_UP,
+ REQ_SCROLL_LINE_DOWN,
+ REQ_SCROLL_PAGE_UP,
+ REQ_SCROLL_PAGE_DOWN,
+};
+
+struct commit {
+ char id[41]; /* SHA1 ID. */
+ char title[75]; /* The first line of the commit message. */
+ char author[75]; /* The author of the commit. */
+ struct tm time; /* Date from the author ident. */
+};
+
+/*
+ * String helpers
+ */
+
+static inline void
+string_ncopy(char *dst, char *src, int dstlen)
+{
+ strncpy(dst, src, dstlen - 1);
+ dst[dstlen - 1] = 0;
+
+}
+
+/* Shorthand for safely copying into a fixed buffer. */
+#define string_copy(dst, src) \
+ string_ncopy(dst, src, sizeof(dst))
+
+/* Shell quoting
+ *
+ * NOTE: The following is a slightly modified copy of the git project's shell
+ * quoting routines found in the quote.c file.
+ *
+ * Help to copy the thing properly quoted for the shell safety. any single
+ * quote is replaced with '\'', any exclamation point is replaced with '\!',
+ * and the whole thing is enclosed in a
+ *
+ * E.g.
+ * original sq_quote result
+ * name ==> name ==> 'name'
+ * a b ==> a b ==> 'a b'
+ * a'b ==> a'\''b ==> 'a'\''b'
+ * a!b ==> a'\!'b ==> 'a'\!'b'
+ */
+
+static size_t
+sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src)
+{
+ char c;
+
+#define BUFPUT(x) ( (bufsize < SIZEOF_CMD) && (buf[bufsize++] = (x)) )
+
+ BUFPUT('\'');
+ while ((c = *src++)) {
+ if (c == '\'' || c == '!') {
+ BUFPUT('\'');
+ BUFPUT('\\');
+ BUFPUT(c);
+ BUFPUT('\'');
+ } else {
+ BUFPUT(c);
+ }
+ }
+ BUFPUT('\'');
+
+ return bufsize;
+}
+
+
+/**
+ * OPTIONS
+ * -------
+ **/
+
+static int opt_line_number = FALSE;
+static int opt_num_interval = NUMBER_INTERVAL;
+static enum request opt_request = REQ_VIEW_MAIN;
+static char opt_cmd[SIZEOF_CMD] = "";
+static FILE *opt_pipe = NULL;
+
+/* Returns the index of log or diff command or -1 to exit. */
+static bool
+parse_options(int argc, char *argv[])
+{
+ int i;
+
+ for (i = 1; i < argc; i++) {
+ char *opt = argv[i];
+
+ /**
+ * -l::
+ * Start up in log view using the internal log command.
+ **/
+ if (!strcmp(opt, "-l")) {
+ opt_request = REQ_VIEW_LOG;
+ continue;
+ }
+
+ /**
+ * -d::
+ * Start up in diff view using the internal diff command.
+ **/
+ if (!strcmp(opt, "-d")) {
+ opt_request = REQ_VIEW_DIFF;
+ continue;
+ }
+
+ /**
+ * -n[INTERVAL], --line-number[=INTERVAL]::
+ * Prefix line numbers in log and diff view.
+ * Optionally, with interval different than each line.
+ **/
+ if (!strncmp(opt, "-n", 2) ||
+ !strncmp(opt, "--line-number", 13)) {
+ char *num = opt;
+
+ if (opt[1] == 'n') {
+ num = opt + 2;
+
+ } else if (opt[STRING_SIZE("--line-number")] == '=') {
+ num = opt + STRING_SIZE("--line-number=");
+ }
+
+ if (isdigit(*num))
+ opt_num_interval = atoi(num);
+
+ opt_line_number = TRUE;
+ continue;
+ }
+
+ /**
+ * -v, --version::
+ * Show version and exit.
+ **/
+ if (!strcmp(opt, "-v") ||
+ !strcmp(opt, "--version")) {
+ printf("tig version %s\n", VERSION);
+ return FALSE;
+ }
+
+ /**
+ * \--::
+ * End of tig(1) options. Useful when specifying commands
+ * for the main view. Example:
+ *
+ * $ tig -- --since=1.month
+ **/
+ if (!strcmp(opt, "--")) {
+ i++;
+ break;
+ }
+
+ /**
+ * log [options]::
+ * Open log view using the given git log options.
+ *
+ * diff [options]::
+ * Open diff view using the given git diff options.
+ *
+ * show [options]::
+ * Open diff view using the given git show options.
+ **/
+ if (!strcmp(opt, "log") ||
+ !strcmp(opt, "diff") ||
+ !strcmp(opt, "show")) {
+ opt_request = opt[0] == 'l'
+ ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
+ break;
+ }
+
+ /* Make stuff like:
+ *
+ * $ tig tag-1.0..HEAD
+ *
+ * work. */
+ if (opt[0] && opt[0] != '-')
+ break;
+
+ die("unknown command '%s'", opt);
+ }
+
+ if (!isatty(STDIN_FILENO)) {
+ /**
+ * Pager mode
+ * ~~~~~~~~~~
+ * If stdin is a pipe, any log or diff options will be ignored and the
+ * pager view will be opened loading data from stdin. The pager mode
+ * can be used for colorizing output from various git commands.
+ *
+ * Example on how to colorize the output of git-show(1):
+ *
+ * $ git show | tig
+ **/
+ opt_request = REQ_VIEW_PAGER;
+ opt_pipe = stdin;
+
+ } else if (i < argc) {
+ size_t buf_size;
+
+ /**
+ * Git command options
+ * ~~~~~~~~~~~~~~~~~~~
+ * All git command options specified on the command line will
+ * be passed to the given command and all will be shell quoted
+ * before used.
+ *
+ * NOTE: It is possible to specify options even for the main
+ * view. If doing this you should not touch the `--pretty`
+ * option.
+ *
+ * Example on how to open the log view and show both author and
+ * committer information:
+ *
+ * $ tig log --pretty=fuller
+ **/
+
+ 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 --stat --pretty=raw");
+ else
+ string_copy(opt_cmd, "git");
+ buf_size = strlen(opt_cmd);
+
+ while (buf_size < sizeof(opt_cmd) && i < argc) {
+ opt_cmd[buf_size++] = ' ';
+ buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
+ }
+
+ if (buf_size >= sizeof(opt_cmd))
+ die("command too long");
-/* Requests for switching between the different views. */
-#define REQ_DIFF (REQ_OFFSET + 0)
-#define REQ_LOG (REQ_OFFSET + 1)
-#define REQ_MAIN (REQ_OFFSET + 2)
+ opt_cmd[buf_size] = 0;
-#define REQ_QUIT (REQ_OFFSET + 11)
-#define REQ_VERSION (REQ_OFFSET + 12)
-#define REQ_STOP (REQ_OFFSET + 13)
-#define REQ_UPDATE (REQ_OFFSET + 14)
-#define REQ_REDRAW (REQ_OFFSET + 15)
-#define REQ_FIRST_LINE (REQ_OFFSET + 16)
-#define REQ_LAST_LINE (REQ_OFFSET + 17)
+ }
+
+ return TRUE;
+}
-#define COLOR_CURSOR 42
/**
* KEYS
* ----
- *
- * d::
- * diff
- * l::
- * log
- * q::
- * quit
- * r::
- * redraw screen
- * s::
- * stop all background loading
- * j::
- * down
- * k::
- * up
- * h, ?::
- * help
- * v::
- * version
- *
**/
#define HELP "(d)iff, (l)og, (m)ain, (q)uit, (v)ersion, (h)elp"
};
struct keymap keymap[] = {
- /* Cursor navigation */
- { KEY_UP, REQ_PREV_LINE },
- { 'k', REQ_PREV_LINE },
- { KEY_DOWN, REQ_NEXT_LINE },
- { 'j', REQ_NEXT_LINE },
- { KEY_HOME, REQ_FIRST_LINE },
- { KEY_END, REQ_LAST_LINE },
-
- /* 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 */
-
- { 'd', REQ_DIFF },
- { 'l', REQ_LOG },
- { 'm', REQ_MAIN },
-
- /* No input from wgetch() with nodelay() enabled. */
- { ERR, REQ_UPDATE },
-
+ /**
+ * View switching
+ * ~~~~~~~~~~~~~~
+ * d::
+ * Switch to diff view.
+ * l::
+ * Switch to log view.
+ * m::
+ * Switch to main view.
+ * p::
+ * Switch to pager view.
+ * h::
+ * Show man page.
+ * Return::
+ * If in main view split the view
+ * and show the diff in the bottom view.
+ * Tab::
+ * Switch to next view.
+ **/
+ { 'm', REQ_VIEW_MAIN },
+ { 'd', REQ_VIEW_DIFF },
+ { 'l', REQ_VIEW_LOG },
+ { 'p', REQ_VIEW_PAGER },
+ { 'h', REQ_VIEW_HELP },
+
+ { KEY_TAB, REQ_VIEW_NEXT },
+ { KEY_RETURN, REQ_ENTER },
+
+ /**
+ * Cursor navigation
+ * ~~~~~~~~~~~~~~~~~
+ * Up, k::
+ * Move curser one line up.
+ * Down, j::
+ * Move cursor one line down.
+ * Page Up::
+ * Move curser one page up.
+ * Page Down::
+ * Move cursor one page down.
+ * Home::
+ * Jump to first line.
+ * End::
+ * Jump to last line.
+ **/
+ { KEY_UP, REQ_MOVE_UP },
+ { 'k', REQ_MOVE_UP },
+ { KEY_DOWN, REQ_MOVE_DOWN },
+ { 'j', REQ_MOVE_DOWN },
+ { KEY_HOME, REQ_MOVE_FIRST_LINE },
+ { KEY_END, REQ_MOVE_LAST_LINE },
+ { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
+ { KEY_PPAGE, REQ_MOVE_PAGE_UP },
+
+ /**
+ * Scrolling
+ * ~~~~~~~~~
+ * Insert::
+ * Scroll view one line up.
+ * Delete::
+ * Scroll view one line down.
+ * w::
+ * Scroll view one page up.
+ * s::
+ * Scroll view one page down.
+ **/
+ { KEY_IC, REQ_SCROLL_LINE_UP },
+ { KEY_DC, REQ_SCROLL_LINE_DOWN },
+ { 'w', REQ_SCROLL_PAGE_UP },
+ { 's', REQ_SCROLL_PAGE_DOWN },
+
+ /**
+ * Misc
+ * ~~~~
+ * q, Escape::
+ * Quit
+ * r::
+ * Redraw screen.
+ * z::
+ * Stop all background loading.
+ * v::
+ * Show version.
+ * n::
+ * Toggle line numbers on/off.
+ * ':'::
+ * Open prompt. This allows you to specify what git command to run.
+ * Example:
+ *
+ * :log -p
+ *
+ **/
{ KEY_ESC, REQ_QUIT },
{ 'q', REQ_QUIT },
- { 's', REQ_STOP },
- { 'v', REQ_VERSION },
- { 'r', REQ_REDRAW },
+ { 'z', REQ_STOP_LOADING },
+ { 'v', REQ_SHOW_VERSION },
+ { 'r', REQ_SCREEN_REDRAW },
+ { 'n', REQ_TOGGLE_LINE_NUMBERS },
+ { ':', REQ_PROMPT },
+
+ /* wgetch() with nodelay() enabled returns ERR when there's no input. */
+ { ERR, REQ_SCREEN_UPDATE },
+
+ /* Use the ncurses SIGWINCH handler. */
+ { KEY_RESIZE, REQ_SCREEN_RESIZE },
};
-static int
-get_request(int request)
+static enum request
+get_request(int key)
{
int i;
for (i = 0; i < ARRAY_SIZE(keymap); i++)
- if (keymap[i].alias == request)
+ if (keymap[i].alias == key)
return keymap[i].request;
- return request;
+ return (enum request) key;
}
+/*
+ * Line-oriented content detection.
+ */
+
+#define LINE_INFO \
+/* Line type String to match Foreground Background Attributes
+ * --------- --------------- ---------- ---------- ---------- */ \
+/* Diff markup */ \
+LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
+LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
+LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
+LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
+LINE(DIFF_OLDMODE, "old mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+LINE(DIFF_NEWMODE, "new mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+/* Pretty print commit header */ \
+LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
+LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
+LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
+LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+/* Raw commit header */ \
+LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
+LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
+LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
+LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
+LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
+/* Misc */ \
+LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
+LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
+/* UI colors */ \
+LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
+LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
+LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
+LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
+LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
+LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
+LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
+LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
+LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0),
+
+enum line_type {
+#define LINE(type, line, fg, bg, attr) \
+ LINE_##type
+ LINE_INFO
+#undef LINE
+};
+
+struct line_info {
+ char *line; /* The start of line to match. */
+ int linelen; /* Size of string to match. */
+ int fg, bg, attr; /* Color and text attributes for the lines. */
+};
+
+static struct line_info line_info[] = {
+#define LINE(type, line, fg, bg, attr) \
+ { (line), STRING_SIZE(line), (fg), (bg), (attr) }
+ LINE_INFO
+#undef LINE
+};
+
+static enum line_type
+get_line_type(char *line)
+{
+ int linelen = strlen(line);
+ enum line_type type;
+
+ for (type = 0; type < ARRAY_SIZE(line_info); type++)
+ /* Case insensitive search matches Signed-off-by lines better. */
+ if (linelen >= line_info[type].linelen &&
+ !strncasecmp(line_info[type].line, line, line_info[type].linelen))
+ return type;
+
+ return LINE_DEFAULT;
+}
+
+static inline int
+get_line_attr(enum line_type type)
+{
+ assert(type < ARRAY_SIZE(line_info));
+ return COLOR_PAIR(type) | line_info[type].attr;
+}
+
+static void
+init_colors(void)
+{
+ int default_bg = COLOR_BLACK;
+ int default_fg = COLOR_WHITE;
+ enum line_type type;
+
+ start_color();
+
+ if (use_default_colors() != ERR) {
+ default_bg = -1;
+ default_fg = -1;
+ }
+
+ for (type = 0; type < ARRAY_SIZE(line_info); type++) {
+ struct line_info *info = &line_info[type];
+ int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
+ int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
+
+ init_pair(type, fg, bg);
+ }
+}
+
+
+/**
+ * ENVIRONMENT VARIABLES
+ * ---------------------
+ * It is possible to alter which commands are used for the different views.
+ * If for example you prefer commits in the main to be sorted by date and
+ * only show 500 commits, use:
+ *
+ * $ TIG_MAIN_CMD="git log --date-order -n500 --pretty=raw %s" tig
+ *
+ * Or set the variable permanently in your environment.
+ *
+ * Notice, how `%s` is used to specify the commit reference. There can
+ * be a maximum of 5 `%s` ref specifications.
+ *
+ * TIG_DIFF_CMD::
+ * The command used for the diff view. By default, git show is used
+ * as a backend.
+ *
+ * TIG_LOG_CMD::
+ * The command used for the log view.
+ *
+ * TIG_MAIN_CMD::
+ * The command used for the main view. Note, you must always specify
+ * the option: `--pretty=raw` since the main view parser expects to
+ * read that format.
+ **/
+
+#define TIG_DIFF_CMD \
+ "git show --patch-with-stat --find-copies-harder -B -C %s"
+
+#define TIG_LOG_CMD \
+ "git log --cc --stat -n100 %s"
+
+#define TIG_MAIN_CMD \
+ "git log --topo-order --stat --pretty=raw %s"
+
+/* We silently ignore that the following are also exported. */
+
+#define TIG_HELP_CMD \
+ "man tig 2> /dev/null"
+
+#define TIG_PAGER_CMD \
+ ""
+
+
/*
* Viewer
*/
struct view {
- char *name;
- char *cmd;
- char *id;
-
- /* Rendering */
- int (*render)(struct view *, unsigned int);
- WINDOW *win;
- int height, width;
+ const char *name; /* View name */
+ char *cmd_fmt; /* Default command line format */
+ char *cmd_env; /* Command line set via environment */
+ char *id; /* Points to either of ref_{head,commit} */
+ size_t objsize; /* Size of objects in the line index */
+
+ struct view_ops {
+ /* Draw one line; @lineno must be < view->height. */
+ bool (*draw)(struct view *view, unsigned int lineno);
+ /* Read one line; updates view->line. */
+ bool (*read)(struct view *view, char *line);
+ /* Depending on view, change display based on current line. */
+ bool (*enter)(struct view *view);
+ } *ops;
+
+ char cmd[SIZEOF_CMD]; /* Command buffer */
+ char ref[SIZEOF_REF]; /* Hovered commit reference */
+ char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
+
+ int height, width; /* The width and height of the main window */
+ WINDOW *win; /* The main window */
+ WINDOW *title; /* The title window living below the main window */
/* Navigation */
unsigned long offset; /* Offset of the window top */
/* Buffering */
unsigned long lines; /* Total number of lines */
- char **line; /* Line index */
+ void **line; /* Line index; each line contains user data */
+ unsigned int digits; /* Number of digits in the lines member. */
/* Loading */
FILE *pipe;
+ time_t start_time;
};
-static int default_renderer(struct view *view, unsigned int lineno);
+static struct view_ops pager_ops;
+static struct view_ops main_ops;
-#define DIFF_CMD \
- "git log --stat -n1 %s ; echo; " \
- "git diff --find-copies-harder -B -C %s^ %s"
+char ref_head[SIZEOF_REF] = "HEAD";
+char ref_commit[SIZEOF_REF] = "HEAD";
-#define LOG_CMD \
- "git log --stat -n100 %s"
+#define VIEW_STR(name, cmd, env, ref, objsize, ops) \
+ { name, cmd, #env, ref, objsize, ops }
-#define MAIN_CMD \
- "git log --stat --pretty=raw %s"
-
-/* The status window at the bottom. Used for polling keystrokes. */
-static WINDOW *status_win;
-
-#define SIZEOF_ID 1024
-
-char head_id[SIZEOF_ID] = "HEAD";
-char commit_id[SIZEOF_ID] = "HEAD";
-
-static unsigned int current_view;
-static unsigned int nloading;
+#define VIEW_(id, name, ops, ref, objsize) \
+ VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, objsize, ops)
static struct view views[] = {
- { "diff", DIFF_CMD, commit_id, default_renderer },
- { "log", LOG_CMD, head_id, default_renderer },
- { "main", MAIN_CMD, head_id, default_renderer },
+ VIEW_(MAIN, "main", &main_ops, ref_head, sizeof(struct commit)),
+ VIEW_(DIFF, "diff", &pager_ops, ref_commit, sizeof(char)),
+ VIEW_(LOG, "log", &pager_ops, ref_head, sizeof(char)),
+ VIEW_(HELP, "help", &pager_ops, ref_head, sizeof(char)),
+ VIEW_(PAGER, "pager", &pager_ops, "static", sizeof(char)),
};
-static struct view *display[ARRAY_SIZE(views)];
+#define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
+
+/* The display array of active views and the index of the current view. */
+static struct view *display[2];
+static unsigned int current_view;
#define foreach_view(view, i) \
- for (i = 0; i < sizeof(display) && (view = display[i]); i++)
+ for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
+
static void
-redraw_view(struct view *view)
+redraw_view_from(struct view *view, int lineno)
{
- int lineno;
+ assert(0 <= lineno && lineno < view->height);
- wclear(view->win);
- wmove(view->win, 0, 0);
-
- for (lineno = 0; lineno < view->height; lineno++) {
- if (!view->render(view, lineno))
+ for (; lineno < view->height; lineno++) {
+ if (!view->ops->draw(view, lineno))
break;
}
wrefresh(view->win);
}
-/* FIXME: Fix percentage. */
static void
-report_position(struct view *view, int all)
+redraw_view(struct view *view)
{
- report(all ? "line %d of %d (%d%%) viewing from %d"
- : "line %d of %d",
- view->lineno + 1,
- view->lines,
- view->lines ? view->offset * 100 / view->lines : 0,
- view->offset);
+ wclear(view->win);
+ redraw_view_from(view, 0);
}
static void
-move_view(struct view *view, int lines)
+resize_display(void)
+{
+ int offset, i;
+ struct view *base = display[0];
+ struct view *view = display[1] ? display[1] : display[0];
+
+ /* Setup window dimensions */
+
+ getmaxyx(stdscr, base->height, base->width);
+
+ /* Make room for the status window. */
+ base->height -= 1;
+
+ if (view != base) {
+ /* Horizontal split. */
+ view->width = base->width;
+ view->height = SCALE_SPLIT_VIEW(base->height);
+ base->height -= view->height;
+
+ /* Make room for the title bar. */
+ view->height -= 1;
+ }
+
+ /* Make room for the title bar. */
+ base->height -= 1;
+
+ offset = 0;
+
+ foreach_view (view, i) {
+ if (!view->win) {
+ view->win = newwin(view->height, 0, offset, 0);
+ if (!view->win)
+ die("Failed to create %s view", view->name);
+
+ scrollok(view->win, TRUE);
+
+ view->title = newwin(1, 0, offset + view->height, 0);
+ if (!view->title)
+ die("Failed to create title window");
+
+ } else {
+ wresize(view->win, view->height, view->width);
+ mvwin(view->win, offset, 0);
+ mvwin(view->title, offset + view->height, 0);
+ wrefresh(view->win);
+ }
+
+ offset += view->height + 1;
+ }
+}
+
+static void
+update_view_title(struct view *view)
+{
+ if (view == display[current_view])
+ wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
+ else
+ wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
+
+ werase(view->title);
+ wmove(view->title, 0, 0);
+
+ /* [main] ref: 334b506... - commit 6 of 4383 (0%) */
+
+ if (*view->ref)
+ wprintw(view->title, "[%s] ref: %s", view->name, view->ref);
+ else
+ wprintw(view->title, "[%s]", view->name);
+
+ if (view->lines) {
+ char *type = view == VIEW(REQ_VIEW_MAIN) ? "commit" : "line";
+
+ wprintw(view->title, " - %s %d of %d (%d%%)",
+ type,
+ view->lineno + 1,
+ view->lines,
+ (view->lineno + 1) * 100 / view->lines);
+ }
+
+ wrefresh(view->title);
+}
+
+/*
+ * Navigation
+ */
+
+/* Scrolling backend */
+static void
+do_scroll_view(struct view *view, int lines)
{
/* The rendering expects the new offset. */
view->offset += lines;
assert(0 <= view->offset && view->offset < view->lines);
assert(lines);
- {
- int from = lines > 0 ? view->height - lines : 0;
- int to = from + (lines > 0 ? lines : -lines);
+ /* Redraw the whole screen if scrolling is pointless. */
+ if (view->height < ABS(lines)) {
+ redraw_view(view);
+
+ } else {
+ int line = lines > 0 ? view->height - lines : 0;
+ int end = line + ABS(lines);
wscrl(view->win, lines);
- for (; from < to; from++) {
- if (!view->render(view, from))
+ for (; line < end; line++) {
+ if (!view->ops->draw(view, line))
break;
}
}
/* Move current line into the view. */
if (view->lineno < view->offset) {
view->lineno = view->offset;
- view->render(view, 0);
+ view->ops->draw(view, 0);
} else if (view->lineno >= view->offset + view->height) {
view->lineno = view->offset + view->height - 1;
- view->render(view, view->lineno - view->offset);
+ view->ops->draw(view, view->lineno - view->offset);
}
- assert(view->offset <= view->lineno && view->lineno <= view->lines);
+ assert(view->offset <= view->lineno && view->lineno < view->lines);
redrawwin(view->win);
wrefresh(view->win);
-
- report_position(view, lines);
+ report("");
}
+
+/* Scroll frontend */
static void
-scroll_view(struct view *view, int request)
+scroll_view(struct view *view, enum request request)
{
int lines = 1;
switch (request) {
- case REQ_SCR_FPAGE:
+ case REQ_SCROLL_PAGE_DOWN:
lines = view->height;
- case REQ_SCR_FLINE:
+ case REQ_SCROLL_LINE_DOWN:
if (view->offset + lines > view->lines)
lines = view->lines - view->offset;
if (lines == 0 || view->offset + view->height >= view->lines) {
- report("already at last line");
+ report("Cannot scroll beyond the last line");
return;
}
break;
- case REQ_SCR_BPAGE:
+ case REQ_SCROLL_PAGE_UP:
lines = view->height;
- case REQ_SCR_BLINE:
+ case REQ_SCROLL_LINE_UP:
if (lines > view->offset)
lines = view->offset;
if (lines == 0) {
- report("already at first line");
+ report("Cannot scroll beyond the first line");
return;
}
lines = -lines;
break;
+
+ default:
+ die("request %d not handled in switch", request);
}
- move_view(view, lines);
+ do_scroll_view(view, lines);
}
-
+/* Cursor moving */
static void
-navigate_view(struct view *view, int request)
+move_view(struct view *view, enum request request)
{
int steps;
switch (request) {
- case REQ_PREV_LINE:
- if (view->lineno == 0) {
- report("already at first line");
- return;
- }
+ case REQ_MOVE_FIRST_LINE:
+ steps = -view->lineno;
+ break;
+
+ case REQ_MOVE_LAST_LINE:
+ steps = view->lines - view->lineno - 1;
+ break;
+
+ case REQ_MOVE_PAGE_UP:
+ steps = view->height > view->lineno
+ ? -view->lineno : -view->height;
+ break;
+
+ case REQ_MOVE_PAGE_DOWN:
+ steps = view->lineno + view->height >= view->lines
+ ? view->lines - view->lineno - 1 : view->height;
+ break;
+
+ case REQ_MOVE_UP:
steps = -1;
break;
- case REQ_NEXT_LINE:
- if (view->lineno + 1 >= view->lines) {
- report("already at last line");
- return;
- }
+ case REQ_MOVE_DOWN:
steps = 1;
break;
- case REQ_FIRST_LINE:
- steps = -view->lineno;
- break;
+ default:
+ die("request %d not handled in switch", request);
+ }
- case REQ_LAST_LINE:
- steps = view->lines - view->lineno - 1;
+ if (steps <= 0 && view->lineno == 0) {
+ report("Cannot move beyond the first line");
+ return;
+
+ } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
+ report("Cannot move beyond the last line");
+ return;
}
+ /* Move the current line */
view->lineno += steps;
- view->render(view, view->lineno - steps - view->offset);
+ 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);
+ view->ops->draw(view, prev_lineno);
+ }
+ /* Check whether the view needs to be scrolled */
if (view->lineno < view->offset ||
view->lineno >= view->offset + view->height) {
if (steps < 0 && -steps > view->offset) {
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;
+ }
}
- move_view(view, steps);
+
+ do_scroll_view(view, steps);
return;
}
- view->render(view, view->lineno - view->offset);
+ /* Draw the current line */
+ view->ops->draw(view, view->lineno - view->offset);
redrawwin(view->win);
wrefresh(view->win);
-
- report_position(view, view->height);
+ report("");
}
-static void
-resize_view(struct view *view)
-{
- int lines, cols;
-
- getmaxyx(stdscr, lines, cols);
-
- if (view->win) {
- mvwin(view->win, 0, 0);
- wresize(view->win, lines - 1, cols);
-
- } else {
- view->win = newwin(lines - 1, 0, 0, 0);
- if (!view->win) {
- report("failed to create %s view", view->name);
- return;
- }
- scrollok(view->win, TRUE);
- }
-
- getmaxyx(view->win, view->height, view->width);
-}
+/*
+ * Incremental updating
+ */
static bool
begin_update(struct view *view)
{
- char buf[1024];
-
- if (view->cmd) {
- char *id = view->id;
-
- if (snprintf(buf, sizeof(buf), view->cmd, id, id, id) < sizeof(buf))
- view->pipe = popen(buf, "r");
+ char *id = view->id;
+
+ if (opt_cmd[0]) {
+ string_copy(view->cmd, opt_cmd);
+ opt_cmd[0] = 0;
+ /* When running random commands, the view ref could have become
+ * invalid so clear it. */
+ view->ref[0] = 0;
+ } else {
+ char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
- if (!view->pipe)
+ if (snprintf(view->cmd, sizeof(view->cmd), format,
+ id, id, id, id, id) >= sizeof(view->cmd))
return FALSE;
+ }
- if (nloading++ == 0)
- nodelay(status_win, TRUE);
+ /* Special case for the pager view. */
+ if (opt_pipe) {
+ view->pipe = opt_pipe;
+ opt_pipe = NULL;
+ } else {
+ view->pipe = popen(view->cmd, "r");
}
- display[current_view] = view;
+ if (!view->pipe)
+ return FALSE;
+
+ set_nonblocking_input(TRUE);
view->offset = 0;
view->lines = 0;
view->lineno = 0;
+ string_copy(view->vid, id);
+
+ if (view->line) {
+ int i;
+
+ for (i = 0; i < view->lines; i++)
+ if (view->line[i])
+ free(view->line[i]);
+
+ free(view->line);
+ view->line = NULL;
+ }
+
+ view->start_time = time(NULL);
return TRUE;
}
static void
end_update(struct view *view)
{
- wattrset(view->win, A_NORMAL);
- pclose(view->pipe);
+ if (!view->pipe)
+ return;
+ set_nonblocking_input(FALSE);
+ if (view->pipe == stdin)
+ fclose(view->pipe);
+ else
+ pclose(view->pipe);
view->pipe = NULL;
-
- if (nloading-- == 1)
- nodelay(status_win, FALSE);
}
-static int
+static bool
update_view(struct view *view)
{
char buffer[BUFSIZ];
char *line;
- char **tmp;
- int redraw;
- int lines = view->height;
+ void **tmp;
+ /* The number of lines to read. If too low it will cause too much
+ * redrawing (and possible flickering), if too high responsiveness
+ * will suffer. */
+ unsigned long lines = view->height;
+ int redraw_from = -1;
if (!view->pipe)
return TRUE;
- /* Only redraw after the first reading session. */
- redraw = !view->line;
+ /* Only redraw if lines are visible. */
+ if (view->offset + view->height >= view->lines)
+ redraw_from = view->lines - view->offset;
tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines));
if (!tmp)
if (linelen)
line[linelen - 1] = 0;
- view->line[view->lines] = strdup(line);
- if (!view->line[view->lines])
+ if (!view->ops->read(view, line))
goto alloc_error;
- view->lines++;
if (lines-- == 1)
break;
}
- if (redraw)
- redraw_view(view);
+ {
+ int digits;
+
+ lines = view->lines;
+ for (digits = 0; lines; digits++)
+ lines /= 10;
+
+ /* Keep the displayed view in sync with line number scaling. */
+ if (digits != view->digits) {
+ view->digits = digits;
+ redraw_from = 0;
+ }
+ }
+
+ if (redraw_from >= 0) {
+ /* If this is an incremental update, redraw the previous line
+ * since for commits some members could have changed when
+ * loading the main view. */
+ if (redraw_from > 0)
+ redraw_from--;
+
+ /* Incrementally draw avoids flickering. */
+ redraw_view_from(view, redraw_from);
+ }
+
+ /* Update the title _after_ the redraw so that if the redraw picks up a
+ * commit reference in view->ref it'll be available here. */
+ update_view_title(view);
if (ferror(view->pipe)) {
- report("failed to read %s", view->cmd);
+ report("Failed to read: %s", strerror(errno));
goto end;
} else if (feof(view->pipe)) {
- report_position(view, 0);
+ time_t secs = time(NULL) - view->start_time;
+
+ if (view == VIEW(REQ_VIEW_HELP)) {
+ report("%s", HELP);
+ goto end;
+ }
+
+ report("Loaded %d lines in %ld second%s", view->lines, secs,
+ secs == 1 ? "" : "s");
goto end;
}
return TRUE;
alloc_error:
- report("allocation failure");
+ report("Allocation failure");
end:
end_update(view);
return FALSE;
}
+enum open_flags {
+ OPEN_DEFAULT = 0, /* Use default view switching. */
+ OPEN_SPLIT = 1, /* Split current view. */
+ OPEN_BACKGROUNDED = 2, /* Backgrounded. */
+ OPEN_RELOAD = 4, /* Reload view even if it is the current. */
+};
-static struct view *
-switch_view(struct view *prev, int request)
+static void
+open_view(struct view *prev, enum request request, enum open_flags flags)
{
- struct view *view = &views[request - REQ_OFFSET];
+ bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
+ bool split = !!(flags & OPEN_SPLIT);
+ bool reload = !!(flags & OPEN_RELOAD);
+ struct view *view = VIEW(request);
struct view *displayed;
- int i;
-
- if (view == prev) {
- foreach_view (displayed, i) ;
+ int nviews;
+
+ /* Cycle between displayed views and count the views. */
+ foreach_view (displayed, nviews) {
+ if (prev != view &&
+ view == displayed &&
+ !strcmp(view->vid, prev->vid)) {
+ current_view = nviews;
+ /* Blur out the title of the previous view. */
+ update_view_title(prev);
+ report("Switching to %s view", view->name);
+ return;
+ }
+ }
- if (i == 1)
- report("already in %s view", view->name);
- else
- report("FIXME: Maximize");
+ if (view == prev && nviews == 1 && !reload) {
+ report("Already in %s view", view->name);
+ return;
+ }
- return view;
+ if ((reload || strcmp(view->vid, view->id)) &&
+ !begin_update(view)) {
+ report("Failed to load %s view", view->name);
+ return;
+ }
+ if (split) {
+ display[current_view + 1] = view;
+ if (!backgrounded)
+ current_view++;
} else {
- foreach_view (displayed, i) {
- if (view == displayed) {
- current_view = i;
- report("new current view");
- return view;
- }
- }
+ /* Maximize the current view. */
+ memset(display, 0, sizeof(display));
+ current_view = 0;
+ display[current_view] = view;
}
- if (!view->win)
- resize_view(view);
+ resize_display();
- /* Reload */
-
- if (view->line) {
- for (i = 0; i < view->lines; i++)
- if (view->line[i])
- free(view->line[i]);
+ if (split && prev->lineno - prev->offset >= prev->height) {
+ /* Take the title line into account. */
+ int lines = prev->lineno - prev->offset - prev->height + 1;
- free(view->line);
- view->line = NULL;
+ /* Scroll the view that was split if the current line is
+ * outside the new limited view. */
+ do_scroll_view(prev, lines);
}
- if (prev && prev->pipe)
- end_update(prev);
+ if (prev && view != prev) {
+ /* "Blur" the previous view. */
+ update_view_title(prev);
- if (begin_update(view)) {
- if (!view->cmd)
- report("%s", HELP);
- else
- report("loading...");
+ /* Continue loading split views in the background. */
+ if (!split)
+ end_update(prev);
}
- return view;
+ if (view->pipe) {
+ /* Clear the old view and let the incremental updating refill
+ * the screen. */
+ wclear(view->win);
+ report("Loading...");
+ } else {
+ redraw_view(view);
+ report("");
+ }
}
-/* Process a keystroke */
+/*
+ * User request switch noodle
+ */
+
static int
-view_driver(struct view *view, int key)
+view_driver(struct view *view, enum request request)
{
- int request = get_request(key);
int i;
switch (request) {
- case REQ_NEXT_LINE:
- case REQ_PREV_LINE:
- case REQ_FIRST_LINE:
- case REQ_LAST_LINE:
- if (view)
- navigate_view(view, request);
+ case REQ_MOVE_UP:
+ case REQ_MOVE_DOWN:
+ case REQ_MOVE_PAGE_UP:
+ case REQ_MOVE_PAGE_DOWN:
+ case REQ_MOVE_FIRST_LINE:
+ case REQ_MOVE_LAST_LINE:
+ move_view(view, request);
break;
- case REQ_SCR_FLINE:
- case REQ_SCR_BLINE:
- case REQ_SCR_FPAGE:
- case REQ_SCR_BPAGE:
- if (view)
- scroll_view(view, request);
+ case REQ_SCROLL_LINE_DOWN:
+ case REQ_SCROLL_LINE_UP:
+ case REQ_SCROLL_PAGE_DOWN:
+ case REQ_SCROLL_PAGE_UP:
+ scroll_view(view, request);
break;
- case REQ_MAIN:
- case REQ_LOG:
- case REQ_DIFF:
- view = switch_view(view, request);
+ case REQ_VIEW_MAIN:
+ case REQ_VIEW_DIFF:
+ case REQ_VIEW_LOG:
+ case REQ_VIEW_HELP:
+ case REQ_VIEW_PAGER:
+ open_view(view, request, OPEN_DEFAULT);
break;
- case REQ_REDRAW:
+ case REQ_ENTER:
+ if (!view->lines) {
+ report("Nothing to enter");
+ break;
+ }
+ return view->ops->enter(view);
+
+ case REQ_VIEW_NEXT:
+ {
+ int nviews = display[1] ? 2 : 1;
+ 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("Switching to %s view", display[current_view]->name);
+ break;
+ }
+ case REQ_TOGGLE_LINE_NUMBERS:
+ opt_line_number = !opt_line_number;
redraw_view(view);
break;
- case REQ_STOP:
+ case REQ_PROMPT:
+ /* Always reload^Wrerun commands from the prompt. */
+ open_view(view, opt_request, OPEN_RELOAD);
+ break;
+
+ case REQ_STOP_LOADING:
foreach_view (view, i) {
- if (view->pipe) {
- end_update(view);
- scroll_view(view, 0);
- }
+ if (view->pipe)
+ report("Stopped loaded of %s view", view->name),
+ end_update(view);
}
break;
- case REQ_VERSION:
- report("version %s", VERSION);
+ case REQ_SHOW_VERSION:
+ report("Version: %s", VERSION);
return TRUE;
- case REQ_UPDATE:
+ case REQ_SCREEN_RESIZE:
+ resize_display();
+ /* Fall-through */
+ case REQ_SCREEN_REDRAW:
+ foreach_view (view, i) {
+ redraw_view(view);
+ update_view_title(view);
+ }
+ break;
+
+ case REQ_SCREEN_UPDATE:
doupdate();
return TRUE;
return FALSE;
default:
- report(HELP);
+ /* An unknown key will show most commonly used commands. */
+ report("%s", HELP);
return TRUE;
}
/*
- * Rendering
+ * View backend handlers
*/
-#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
-default_renderer(struct view *view, unsigned int lineno)
+static bool
+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;
+ type = get_line_type(line);
+
+ if (view->offset + lineno == view->lineno) {
+ if (type == LINE_COMMIT) {
+ string_copy(view->ref, line + 7);
+ string_copy(ref_commit, view->ref);
+ }
+
+ type = LINE_CURSOR;
+ }
+
+ attr = get_line_attr(type);
+ wattrset(view->win, attr);
linelen = strlen(line);
+ linelen = MIN(linelen, view->width);
- for (i = 0; i < ARRAY_SIZE(attrs); i++) {
- if (linelen < attrs[i].linelen
- || strncmp(attrs[i].line, line, attrs[i].linelen))
- continue;
+ if (opt_line_number) {
+ static char indent[] = " ";
+ unsigned long real_lineno = view->offset + lineno + 1;
+ int col = 0;
- attr = attrs[i].attr;
- break;
- }
+ if (real_lineno == 1 || (real_lineno % opt_num_interval) == 0)
+ mvwprintw(view->win, lineno, 0, "%.*d", view->digits, real_lineno);
- if (view->offset + lineno == view->lineno) {
- if (i == 0)
- strncpy(commit_id, line + 7, SIZEOF_ID);
- attr = COLOR_PAIR(COLOR_CURSOR) | A_BOLD;
+ else if (view->digits < sizeof(indent))
+ mvwaddnstr(view->win, lineno, 0, indent, view->digits);
+
+ waddstr(view->win, ": ");
+
+ while (line) {
+ if (*line == '\t') {
+ waddnstr(view->win, " ", 8 - (col % 8));
+ col += 8 - (col % 8);
+ line++;
+
+ } else {
+ char *tab = strchr(line, '\t');
+
+ if (tab)
+ waddnstr(view->win, line, tab - line);
+ else
+ waddstr(view->win, line);
+ col += tab - line;
+ line = tab;
+ }
+ }
+ waddstr(view->win, line);
+
+ } else {
+#if 0
+ /* NOTE: Code for only highlighting the text on the cursor line.
+ * Kept since I've not yet decided whether to highlight the
+ * entire line or not. --fonseca */
+ /* No empty lines makes cursor drawing and clearing implicit. */
+ if (!*line)
+ line = " ", linelen = 1;
+#endif
+ mvwaddnstr(view->win, lineno, 0, line, linelen);
}
- wattrset(view->win, attr);
- //mvwprintw(view->win, lineno, 0, "%4d: %s", view->offset + lineno, line);
- mvwaddstr(view->win, lineno, 0, line);
+ /* Paint the rest of the line if it's the cursor line. */
+ if (type == LINE_CURSOR)
+ wchgat(view->win, -1, 0, type, NULL);
return TRUE;
}
-/*
- * Main
- */
+static bool
+pager_read(struct view *view, char *line)
+{
+ view->line[view->lines] = strdup(line);
+ if (!view->line[view->lines])
+ return FALSE;
-static void
-quit(int sig)
+ view->lines++;
+ return TRUE;
+}
+
+static bool
+pager_enter(struct view *view)
{
- if (status_win)
- delwin(status_win);
- endwin();
+ char *line = view->line[view->lineno];
- /* FIXME: Shutdown gracefully. */
+ if (get_line_type(line) == LINE_COMMIT) {
+ open_view(view, REQ_VIEW_DIFF, OPEN_DEFAULT);
+ }
- exit(0);
+ return TRUE;
}
-static void die(const char *err, ...)
+static struct view_ops pager_ops = {
+ pager_draw,
+ pager_read,
+ pager_enter,
+};
+
+
+static bool
+main_draw(struct view *view, unsigned int lineno)
{
- va_list args;
+ char buf[DATE_COLS + 1];
+ struct commit *commit;
+ enum line_type type;
+ int cols = 0;
+ size_t timelen;
- endwin();
+ if (view->offset + lineno >= view->lines)
+ return FALSE;
- va_start(args, err);
- fputs("tig: ", stderr);
- vfprintf(stderr, err, args);
- fputs("\n", stderr);
- va_end(args);
+ commit = view->line[view->offset + lineno];
+ if (!*commit->author)
+ return FALSE;
- exit(1);
+ if (view->offset + lineno == view->lineno) {
+ string_copy(view->ref, commit->id);
+ string_copy(ref_commit, view->ref);
+ type = LINE_CURSOR;
+ } else {
+ type = LINE_MAIN_COMMIT;
+ }
+
+ wmove(view->win, lineno, cols);
+ wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
+
+ timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
+ waddnstr(view->win, buf, timelen);
+ waddstr(view->win, " ");
+
+ cols += DATE_COLS;
+ wmove(view->win, lineno, cols);
+ wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
+
+ if (strlen(commit->author) > 19) {
+ waddnstr(view->win, commit->author, 18);
+ wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
+ waddch(view->win, '~');
+ } else {
+ waddstr(view->win, commit->author);
+ }
+
+ cols += 20;
+ wattrset(view->win, A_NORMAL);
+ mvwaddch(view->win, lineno, cols, ACS_LTEE);
+ wattrset(view->win, get_line_attr(type));
+ mvwaddstr(view->win, lineno, cols + 2, commit->title);
+ wattrset(view->win, A_NORMAL);
+
+ return TRUE;
+}
+
+/* Reads git log --pretty=raw output and parses it into the commit struct. */
+static bool
+main_read(struct view *view, char *line)
+{
+ 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;
+
+ line += STRING_SIZE("commit ");
+
+ view->line[view->lines++] = commit;
+ string_copy(commit->id, line);
+ break;
+
+ case LINE_AUTHOR:
+ {
+ char *ident = line + STRING_SIZE("author ");
+ char *end = strchr(ident, '<');
+
+ if (end) {
+ for (; end > ident && isspace(end[-1]); end--) ;
+ *end = 0;
+ }
+
+ commit = view->line[view->lines - 1];
+ string_copy(commit->author, ident);
+
+ /* Parse epoch and timezone */
+ if (end) {
+ char *secs = strchr(end + 1, '>');
+ char *zone;
+ time_t time;
+
+ if (!secs || secs[1] != ' ')
+ break;
+
+ secs += 2;
+ time = (time_t) atol(secs);
+ zone = strchr(secs, ' ');
+ if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
+ long tz;
+
+ zone++;
+ tz = ('0' - zone[1]) * 60 * 60 * 10;
+ tz += ('0' - zone[2]) * 60 * 60;
+ tz += ('0' - zone[3]) * 60;
+ tz += ('0' - zone[4]) * 60;
+
+ if (zone[0] == '-')
+ tz = -tz;
+
+ time -= tz;
+ }
+ gmtime_r(&time, &commit->time);
+ }
+ break;
+ }
+ default:
+ /* We should only ever end up here if there has already been a
+ * commit line, however, be safe. */
+ if (view->lines == 0)
+ break;
+
+ /* Fill in the commit title if it has not already been set. */
+ commit = view->line[view->lines - 1];
+ if (commit->title[0])
+ break;
+
+ /* Require titles to start with a non-space character at the
+ * offset used by git log. */
+ /* FIXME: More gracefull handling of titles; append "..." to
+ * shortened titles, etc. */
+ if (strncmp(line, " ", 4) ||
+ isspace(line[4]))
+ break;
+
+ string_copy(commit->title, line + 4);
+ }
+
+ return TRUE;
+}
+
+static bool
+main_enter(struct view *view)
+{
+ open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT | OPEN_BACKGROUNDED);
+ return TRUE;
}
+static struct view_ops main_ops = {
+ main_draw,
+ main_read,
+ main_enter,
+};
+
+/*
+ * Status management
+ */
+
+/* Whether or not the curses interface has been initialized. */
+bool cursed = FALSE;
+
+/* The status window is used for polling keystrokes. */
+static WINDOW *status_win;
+
+/* Update status and title window. */
static void
report(const char *msg, ...)
{
va_list args;
+ /* Update the title window first, so the cursor ends up in the status
+ * window. */
+ update_view_title(display[current_view]);
+
va_start(args, msg);
werase(status_win);
wmove(status_win, 0, 0);
-
-#if 0
- if (display[current_view])
- wprintw(status_win, "%s %4s: ", commit_id, display[current_view]->name);
-#endif
- vwprintw(status_win, msg, args);
+ if (*msg)
+ vwprintw(status_win, msg, args);
wrefresh(status_win);
va_end(args);
}
+/* Controls when nodelay should be in effect when polling user input. */
static void
-init_colors(void)
+set_nonblocking_input(bool loading)
{
- int bg = COLOR_BLACK;
-
- start_color();
+ /* The number of loading views. */
+ static unsigned int nloading;
- 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);
+ if ((loading == FALSE && nloading-- == 1) ||
+ (loading == TRUE && nloading++ == 0))
+ nodelay(status_win, loading);
}
-int
-main(int argc, char *argv[])
+static void
+init_display(void)
{
- int request = REQ_MAIN;
int x, y;
- signal(SIGINT, quit);
+ /* Initialize the curses library */
+ if (isatty(STDIN_FILENO)) {
+ cursed = !!initscr();
+ } else {
+ /* Leave stdin and stdout alone when acting as a pager. */
+ FILE *io = fopen("/dev/tty", "r+");
- initscr(); /* initialize the curses library */
- nonl(); /* tell curses not to do NL->CR/NL on output */
- cbreak(); /* take input chars one at a time, no wait for \n */
- noecho(); /* don't echo input */
+ cursed = !!newterm(NULL, io, io);
+ }
+
+ if (!cursed)
+ die("Failed to initialize curses");
+
+ nonl(); /* Tell curses not to do NL->CR/NL on output */
+ cbreak(); /* Take input chars one at a time, no wait for \n */
+ noecho(); /* Don't echo input */
leaveok(stdscr, TRUE);
- /* curs_set(0); */
if (has_colors())
init_colors();
/* Enable keyboard mapping */
keypad(status_win, TRUE);
- wattrset(status_win, COLOR_PAIR(COLOR_GREEN));
+ wbkgdset(status_win, get_line_attr(LINE_STATUS));
+}
+
+/*
+ * Main
+ */
+
+static void
+quit(int sig)
+{
+ /* XXX: Restore tty modes and let the OS cleanup the rest! */
+ if (cursed)
+ endwin();
+ exit(0);
+}
+
+static void die(const char *err, ...)
+{
+ va_list args;
+
+ endwin();
+
+ va_start(args, err);
+ fputs("tig: ", stderr);
+ vfprintf(stderr, err, args);
+ fputs("\n", stderr);
+ va_end(args);
+
+ exit(1);
+}
+
+#include <readline/readline.h>
+
+int
+main(int argc, char *argv[])
+{
+ struct view *view;
+ enum request request;
+ size_t i;
+
+ signal(SIGINT, quit);
+
+ if (!parse_options(argc, argv))
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
+ view->cmd_env = getenv(view->cmd_env);
+
+ request = opt_request;
+
+ init_display();
while (view_driver(display[current_view], request)) {
- struct view *view;
+ int key;
int i;
- foreach_view (view, i) {
- if (view->pipe) {
- update_view(view);
- }
- }
+ foreach_view (view, i)
+ update_view(view);
/* Refresh, accept single keystroke of input */
- request = wgetch(status_win);
- if (request == KEY_RESIZE) {
- int lines, cols;
+ key = wgetch(status_win);
+ request = get_request(key);
+
+ /* Some low-level request handling. This keeps handling of
+ * status_win restricted. */
+ switch (request) {
+ case REQ_PROMPT:
+ report(":");
+ /* Temporarily switch to line-oriented and echoed
+ * input. */
+ nocbreak();
+ echo();
+
+ if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) {
+ memcpy(opt_cmd, "git ", 4);
+ opt_request = REQ_VIEW_PAGER;
+ } else {
+ request = ERR;
+ }
+
+ noecho();
+ cbreak();
+ break;
+
+ case REQ_SCREEN_RESIZE:
+ {
+ int height, width;
+
+ getmaxyx(stdscr, height, width);
- getmaxyx(stdscr, lines, cols);
- mvwin(status_win, lines - 1, 0);
- wresize(status_win, 1, cols - 1);
+ /* Resize the status view and let the view driver take
+ * care of resizing the displayed views. */
+ wresize(status_win, 1, width);
+ mvwin(status_win, height - 1, 0);
+ wrefresh(status_win);
+ break;
+ }
+ default:
+ break;
}
}
}
/**
+ * TODO
+ * ----
+ * Features that should be explored.
+ *
+ * - Searching.
+ *
+ * - Locale support.
+ *
* COPYRIGHT
* ---------
- * Copyright (c) Jonas Fonseca, 2006
+ * Copyright (c) Jonas Fonseca <fonseca@diku.dk>, 2006
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
* SEE ALSO
* --------
+ * [verse]
* link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)],
* link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)]
+ * gitk(1): git repository browser written using tcl/tk,
+ * gitview(1): git repository browser written using python/gtk.
**/