From 05f1685b4ce49e79cbe632a6779556a42263be2f Mon Sep 17 00:00:00 2001
From: Jonas Fonseca <fonseca@diku.dk>
Date: Tue, 11 Apr 2006 02:29:14 +0200
Subject: [PATCH] Half working prototype

---
 Makefile |   7 ++
 cgit     | Bin 10702 -> 16787 bytes
 cgit.c   | 271 ++++++++++++++++++++++++++++++++++++++++++++-----------
 3 files changed, 223 insertions(+), 55 deletions(-)

diff --git a/Makefile b/Makefile
index ca09fb2..eec1e03 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,12 @@
 LDFLAGS = -lcurses
+CFLAGS	= -g
 
 all: cgit
 
+install: all
+	install cgit $(HOME)/bin
+
+clean:
+	rm -f cgit
+
 cgit: cgit.c
diff --git a/cgit b/cgit
index 5913b2d4009fd7c5436db14fea49d621f45dca25..8397f2759ebefd958cd202866e23cc47d8f02d97 100755
GIT binary patch
literal 16787
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diff --git a/cgit.c b/cgit.c
index 5bb8832..a22dfbe 100644
--- a/cgit.c
+++ b/cgit.c
@@ -10,11 +10,39 @@
 
 #include <curses.h>
 
+#define CGIT_HELP "(q)uit, (s)hell, (j) down, (k) up"
+#define KEY_ESC	27
+#define KEY_TAB	9
+
+/* +------------------------------------+
+ * |titlewin				|
+ * +------------------------------------+
+ * |mainwin				|
+ * |					|
+ * |					|
+ * |					|
+ * |					|
+ * +------------------------------------+
+ * |statuswin				|
+ * +------------------------------------+
+ */
+
+WINDOW *titlewin;
+WINDOW *mainwin;
+WINDOW *statuswin;
+
+typedef void (*pipe_filter_T)(char *, int);
+
+FILE *pipe;
+long  pipe_lineno;
+pipe_filter_T pipe_filter;
+
 /*
  * Init and quit
  */
 
-static void quit(int sig)
+static void
+quit(int sig)
 {
 	endwin();
 
@@ -26,31 +54,153 @@ static void quit(int sig)
 static void
 init_colors(void)
 {
+	int bg = COLOR_BLACK;
+
 	start_color();
 
-	init_pair(COLOR_BLACK,	 COLOR_BLACK,	COLOR_BLACK);
-	init_pair(COLOR_GREEN,	 COLOR_GREEN,	COLOR_BLACK);
-	init_pair(COLOR_RED,	 COLOR_RED,	COLOR_BLACK);
-	init_pair(COLOR_CYAN,	 COLOR_CYAN,	COLOR_BLACK);
-	init_pair(COLOR_WHITE,	 COLOR_WHITE,	COLOR_BLACK);
-	init_pair(COLOR_MAGENTA, COLOR_MAGENTA,	COLOR_BLACK);
-	init_pair(COLOR_BLUE,	 COLOR_BLUE,	COLOR_BLACK);
-	init_pair(COLOR_YELLOW,	 COLOR_YELLOW,	COLOR_BLACK);
+	if (use_default_colors())
+		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);
 }
 
 static void
 init(void)
 {
-	(void) signal(SIGINT, quit);      /* arrange interrupts to terminate */
+	int x, y;
 
-	(void) initscr();      /* initialize the curses library */
-	keypad(stdscr, TRUE);  /* enable keyboard mapping */
-	(void) nonl();         /* tell curses not to do NL->CR/NL on output */
-	(void) cbreak();       /* take input chars one at a time, no wait for \n */
-	(void) noecho();       /* don't echo input */
+	signal(SIGINT, quit);
+
+	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 */
 
 	if (has_colors())
 		init_colors();
+
+	getmaxyx(stdscr, y, x);
+
+	titlewin = newwin(1, 0, 0, 0);
+
+	wattrset(titlewin, COLOR_PAIR(COLOR_GREEN));
+	waddch(titlewin, ACS_VLINE);
+	wprintw(titlewin, "%s", "cg-view");
+	waddch(titlewin, ACS_LTEE);
+	whline(titlewin, ACS_HLINE, x);
+	wrefresh(titlewin);
+
+	statuswin = newwin(1, 0, y - 1, 0);
+
+	wattrset(statuswin, COLOR_PAIR(COLOR_GREEN));
+	wprintw(statuswin, "%s", CGIT_HELP);
+	wrefresh(statuswin);
+
+	mainwin = newwin(y - 2, 0, 1, 0);
+	scrollok(mainwin, TRUE);
+	keypad(mainwin, TRUE);  /* enable keyboard mapping */
+}
+
+/*
+ * Pipe filters
+ */
+
+#define DIFF_CMD	\
+	"git-rev-list $(git-rev-parse --since=1.month) HEAD^..HEAD | " \
+	"git-diff-tree --stdin --pretty -r --cc --always"
+
+
+#define LOG_CMD	\
+	"git-rev-list $(git-rev-parse --since=1.month) HEAD | " \
+	"git-diff-tree --stdin --pretty -r"
+
+static void
+log_filter(char *line, int lineno)
+{
+	static int log_filter_skip;
+
+	if (!line) {
+		wattrset(mainwin, A_NORMAL);
+		log_filter_skip = 0;
+		return;
+	}
+
+	if (!strncmp("commit ", line, 7)) {
+		attrset(COLOR_PAIR(COLOR_GREEN));
+
+	} else if (!strncmp("Author: ", line, 8)) {
+		wattrset(mainwin, COLOR_PAIR(COLOR_CYAN));
+
+	} else if (!strncmp("Date:   ", line, 6)) {
+		wattrset(mainwin, COLOR_PAIR(COLOR_YELLOW));
+
+	} else if (!strncmp("diff --git ", line, 11)) {
+		wattrset(mainwin, COLOR_PAIR(COLOR_YELLOW));
+
+	} else if (!strncmp("diff-tree ", line, 10)) {
+		wattrset(mainwin, COLOR_PAIR(COLOR_BLUE));
+
+	} else if (!strncmp("index ", line, 6)) {
+		wattrset(mainwin, COLOR_PAIR(COLOR_BLUE));
+
+	} else if (line[0] == '-') {
+		wattrset(mainwin, COLOR_PAIR(COLOR_RED));
+
+	} else if (line[0] == '+') {
+		wattrset(mainwin, COLOR_PAIR(COLOR_GREEN));
+
+	} else if (line[0] == '@') {
+		wattrset(mainwin, COLOR_PAIR(COLOR_MAGENTA));
+
+	} else if (line[0] == ':') {
+		log_filter_skip = 1;
+		return;
+
+	} else if (log_filter_skip) {
+		log_filter_skip = 0;
+		return;
+
+	} else {
+		wattrset(mainwin, A_NORMAL);
+	}
+
+	mvwaddstr(mainwin, lineno, 0, line);
+}
+
+static FILE *
+open_pipe(char *cmd, pipe_filter_T filter)
+{
+	pipe = popen(cmd, "r");
+	pipe_lineno = 1;
+	pipe_filter = filter;
+	return pipe;
+}
+
+static void
+read_pipe(int lines)
+{
+	char buffer[BUFSIZ];
+	char *line;
+
+	while ((line = fgets(buffer, sizeof(buffer), pipe))) {
+		pipe_filter(line, pipe_lineno++);
+		if (!--lines)
+			break;
+	}
+
+	if (feof(pipe) || ferror(pipe)) {
+		pipe_filter(NULL, pipe_lineno - 1);
+		pclose(pipe);
+		pipe = NULL;
+		pipe_filter = NULL;
+	}
 }
 
 /*
@@ -60,68 +210,79 @@ init(void)
 int
 main(int argc, char *argv[])
 {
-	int x, y;
-
 	init();
 
-	getmaxyx(stdscr, y, x);
-
-	attrset(COLOR_PAIR(COLOR_GREEN));
-
-	addch(ACS_VLINE);
-	printw("%s", "cg-view");
-	addch(ACS_LTEE);
-	addch(ACS_HLINE);
-	addch(ACS_HLINE);
-	addch(ACS_HLINE);
-	addch(ACS_HLINE);
-	addch(ACS_HLINE);
-	addch(ACS_HLINE);
-	addch(ACS_HLINE);
-	mvprintw(y - 1, 0, "%s", "press 'q' to quit");
-
-	{
-		FILE *rev_list = popen("git-rev-list $(git-rev-parse --since=1.month) HEAD", "r");
-		char buffer[BUFSIZ];
-		char *line;
-		int lineno = 1;
-
-		while ((line = fgets(buffer, sizeof(buffer), rev_list))) {
-			move(lineno, 0);
-			printw("%2d: ", lineno++);
-			addch(ACS_LTEE);
-			addch(ACS_HLINE);
-			addstr(line);
-		}
-	}
-	attrset(A_NORMAL);
-/*        scrollok();*/
+	pipe = open_pipe(LOG_CMD, log_filter);
 
 	for (;;) {
-		int c = getch();     /* refresh, accept single keystroke of input */
+		int c;
+
+		if (pipe) read_pipe(20);
+		if (pipe) nodelay(mainwin, TRUE);
+
+		c = wgetch(mainwin);     /* refresh, accept single keystroke of input */
+
+		if (pipe) nodelay(mainwin, FALSE);
+
+		if (c == ERR)
+			continue;
 
 		/* Process the command keystroke */
 		switch (c) {
+		case KEY_ESC:
 		case 'q':
 			quit(0);
 			return 0;
 
+		case KEY_DOWN:
+		case 'j':
+			wscrl(mainwin, 1);
+			break;
+
+		case KEY_UP:
+		case 'k':
+			wscrl(mainwin, -1);
+			break;
+
+		case 'd':
+			pipe = open_pipe(DIFF_CMD, log_filter);
+			wclear(mainwin);
+			wmove(mainwin, 0, 0);
+			break;
+
+		case 'l':
+			pipe = open_pipe(LOG_CMD, log_filter);
+			wclear(mainwin);
+			wmove(mainwin, 0, 0);
+			break;
+
 		case 's':
-			addstr("Shelling out...");
+			mvwaddstr(statuswin, 0, 0, "Shelling out......................");
 			def_prog_mode();           /* save current tty modes */
 			endwin();                  /* restore original tty modes */
 			system("sh");              /* run shell */
-			addstr("returned.\n");     /* prepare return message */
+
+			wclear(statuswin);
+			mvwaddstr(statuswin, 0, 0, CGIT_HELP);
 			reset_prog_mode();
 			//refresh();                 /* restore save modes, repaint screen */
 			break;
 
-		default:
-			if (isprint(c) || isspace(c))
-				addch(c);
+/*                default:*/
+/*                        if (isprint(c) || isspace(c))*/
+/*                                addch(c);*/
 		}
 
+		redrawwin(mainwin);
+		wrefresh(mainwin);
+/*                redrawwin(titlewin);*/
+/*                wrefresh(titlewin);*/
+/*                redrawwin(statuswin);*/
+/*                wrefresh(statuswin);*/
 	}
 
 	quit(0);
 }
+
+/*                        addch(ACS_LTEE);*/
+/*                        addch(ACS_HLINE);*/
-- 
2.30.2