Initial checkin!

Thanks to Jefferey Harris for the following modifications:

- read files before starting curses, since opening a pipe hangs curses
in cygwin
- made a few minor changes to make it Python2.4 compatible, since that's
what I'm running in Cygwin (try:except:finally: requires Python 2.5, as
does the "normal if test else alternate" construct)
- added help text
- removed a bunch of unneeded semi-colons ;)
- added a more pythonic idiom here and there (enumerate, a format
string, and a join instead of constructing a string in place)


git-svn-id: http://svnreview.googlecode.com/svn/trunk@2 79c90660-5d2f-0410-960b-fd9bd8afac0e

svnreview.py

@@ -0,0 +1,166 @@
+#!/usr/bin/env python
+import os
+import curses
+import logging
+
+#globals
+currentLine = 0
+page = 0
+err = None
+
+logging.basicConfig(level=logging.DEBUG,
+                    format='%(asctime)s %(levelname)s %(message)s',
+                    filename='/tmp/myapp.log',
+                    filemode='w')
+
+def getFileList():
+    fileList = []
+    for line in os.popen("svn status").read().splitlines():
+        status = line[0:7].strip()
+        if status == "?":
+            # ignore files that aren't in version control
+            continue
+        file = line[7:].strip()
+        fileList.append({"status" : status, "file" : file, "checked" : False})
+    return fileList 
+
+#def getFileList():
+#     fileList = list()
+#     for i in range(0,200):
+#         fileList.append({"status": "M", "file":"/cosmo/blah" + str(i), "checked": False})
+#     return fileList
+
+#init curses
+def initCurses():
+    global stdscr 
+    global pad
+    stdscr = curses.initscr()
+    curses.noecho()
+    curses.cbreak()
+    stdscr.keypad(1)
+    pad = curses.newpad(1000, 1000)
+
+
+#clean up
+def cleanupCurses():
+    curses.nocbreak()
+    stdscr.keypad(0)
+    curses.echo()
+    curses.endwin()
+
+end_buffer_size = 3
+
+def getMaxLines():
+    return stdscr.getmaxyx()[0] - end_buffer_size
+
+line_format = "[%(checkmark)s] %(status)-6s %(file)s"
+help_string1 = "q     - quit          | a - check all   | up/down    - move one line"
+help_string2 = "space - check/uncheck | u - uncheck all | right/left - page up/down"
+
+def redraw():
+    global err
+    global page
+    maxLines = getMaxLines()
+    page = currentLine / maxLines
+    start = page * maxLines
+    stdscr.erase()
+    for linenumber, fileinfo in enumerate(filelist[start:start + maxLines]):
+        if fileinfo['checked']:
+            fileinfo['checkmark'] = 'x'
+        else:
+            fileinfo['checkmark'] = ' '
+        try:
+            stdscr.addstr(linenumber, 0, line_format % fileinfo, curses.A_BOLD)
+        except Exception, err:
+            logging.error(err)
+    if len(filelist) == 0:
+        stdscr.addstr(0, 0, "No files changes - press 'q' to quit", curses.A_BOLD)
+    else:
+        stdscr.addstr(maxLines + 1,     0, help_string1, curses.A_DIM)
+        stdscr.addstr(maxLines + 2, 0, help_string2, curses.A_DIM)
+
+
+def toggleChecked(index):
+    checked = filelist[index]["checked"]
+    filelist[index]["checked"] = not checked
+
+def checkall(checked=True):
+    for file in filelist:
+        file["checked"] = checked
+
+def move(amount):
+    global currentLine
+    if (amount + currentLine < 0):
+        currentLine = 0
+    elif (amount + currentLine > (len(filelist) - 1)):
+        currentLine = len(filelist) - 1
+    else:
+        currentLine = currentLine + amount
+    redraw()
+    positionCursor()
+
+def positionCursor():
+    stdscr.move((currentLine % getMaxLines()) ,1)
+
+def gotoPage(newPage):
+    newLine = newPage * getMaxLines() + (currentLine % getMaxLines())
+    move(newLine - currentLine)
+    redraw()
+    positionCursor()
+
+def main():
+    global stdscr
+    try:
+        global filelist
+        # get the file list before initCurses, because opening a pipe
+        # after curses is initialized causes Cygwin to hang
+        filelist = getFileList()
+        initCurses()
+
+        redraw()
+
+        y,x = curses.getsyx()
+        stdscr.move(0,1)
+        while 1:
+            c = stdscr.getch()
+            logging.debug(c)
+            if c == ord('q'): break  # Exit the while()
+            elif c == curses.KEY_UP: 
+                logging.debug("KEYUP!")
+                move(-1)
+            elif c == curses.KEY_DOWN : 
+                logging.debug("KEYDOWN")
+                move(1)
+            elif c == ord(' '):
+                logging.debug("SPACE")
+                toggleChecked(currentLine)
+                move(1)
+            elif c == ord('a'):
+                y,x = curses.getsyx()
+                checkall()
+                redraw()
+                stdscr.move(y,x)
+            elif c == ord('u'):
+                y,x = curses.getsyx()
+                checkall(False)
+                redraw()
+                stdscr.move(y,x)
+            elif c == curses.KEY_RIGHT: 
+                logging.debug("KEY_RIGHT")
+                move(getMaxLines())
+            elif c == curses.KEY_LEFT: 
+                logging.debug("KEY_LEFT")
+                move(-getMaxLines())
+            elif 0 <= c <= 256 and chr(c).isdigit():
+                destination = 10
+                if chr(c) != 0:
+                    destination = int(chr(c)) - 1
+                gotoPage(destination)
+
+    except Exception, err:
+        logging.error(err)
+    cleanupCurses()
+    print " ".join(f["file"] for f in filelist if f["checked"])
+
+if __name__ == "__main__":
+    main()