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Split in TextWindow and SourceWindow.

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Count lines in Python.
This commit is contained in:
Guido van Rossum 1992-01-27 16:58:03 +00:00
parent 0bf32e3c78
commit 6fd42b8e92
2 changed files with 102 additions and 48 deletions
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75
Lib/lib-stdwin/srcwin.py
View file

@ -7,58 +7,62 @@
WIDTH = 40 WIDTH = 40
MAXHEIGHT = 24 MAXHEIGHT = 24
class SourceWindow(basewin.BaseWindow):
def init(self, filename): class TextWindow(basewin.BaseWindow):
self.filename = filename
# def init(self, title, contents):
f = open(self.filename, 'r') # raise exception if not found self.contents = contents
self.contents = f.read() self.linecount = countlines(self.contents)
f.seek(0)
self.linecount = len(f.readlines())
f.close()
# #
self.lineheight = lh = stdwin.lineheight() self.lineheight = lh = stdwin.lineheight()
self.leftmargin = stdwin.textwidth('00000000') self.leftmargin = self.getmargin()
self.top = 0
self.rightmargin = 30000 # Infinity self.rightmargin = 30000 # Infinity
self.bottom = lh * self.linecount self.bottom = lh * self.linecount
# #
stdwin.setdefwinpos(0, 0)
width = WIDTH*stdwin.textwidth('0') width = WIDTH*stdwin.textwidth('0')
height = lh*min(MAXHEIGHT, self.linecount) height = lh*min(MAXHEIGHT, self.linecount)
stdwin.setdefwinsize(width, height) stdwin.setdefwinsize(width, height)
self = basewin.BaseWindow.init(self, filename) self = basewin.BaseWindow.init(self, title)
# #
self.win.setdocsize(0, self.bottom + lh) self.win.setdocsize(0, self.bottom)
self.initeditor() self.initeditor()
return self return self
def initeditor(self): def initeditor(self):
r = (self.leftmargin, 0), (self.rightmargin, self.bottom) r = (self.leftmargin, self.top), (self.rightmargin, self.bottom)
self.editor = self.win.textcreate(r) self.editor = self.win.textcreate(r)
self.editor.settext(self.contents) self.editor.settext(self.contents)
def closeeditor(self): def closeeditor(self):
self.editor.close() self.editor.close()
def reopen(self): # def reopen(self):
self.closeeditor() # self.closeeditor()
basewin.BaseWindow.reopen(self) # basewin.BaseWindow.reopen(self)
self.initeditor() # self.initeditor()
def close(self): # Override the following two methods to format line numbers differently
self.closeeditor()
basewin.BaseWindow.close(self)
# Override this method to format line numbers differently
def getmark(self, lineno): def getmark(self, lineno):
return `lineno` return `lineno`
def getmargin(self):
return stdwin.textwidth(`self.linecount + 1` + ' ')
# Event dispatcher, called from mainloop.mainloop()
def dispatch(self, event): def dispatch(self, event):
if event[0] == WE_NULL: return # Dummy tested by mainloop if event[0] == WE_NULL: return # Dummy tested by mainloop
if event[0] == WE_DRAW or not self.editor.event(event): if event[0] == WE_DRAW or not self.editor.event(event):
basewin.BaseWindow.dispatch(self, event) basewin.BaseWindow.dispatch(self, event)
# Event handlers
def close(self):
self.closeeditor()
basewin.BaseWindow.close(self)
def draw(self, detail): def draw(self, detail):
dummy = self.editor.draw(detail) dummy = self.editor.draw(detail)
# Draw line numbers # Draw line numbers
@ -75,7 +79,9 @@ def draw(self, detail):
finally: finally:
d.close() d.close()
def changemark(self, lineno): # Calls from outside
def changemark(self, lineno): # redraw the mark for a line
left = 0 left = 0
top = (lineno-1) * self.lineheight top = (lineno-1) * self.lineheight
right = self.leftmargin right = self.leftmargin
@ -87,7 +93,7 @@ def changemark(self, lineno):
finally: finally:
d.close() d.close()
def showline(self, lineno): def showline(self, lineno): # scroll to make a line visible
left = 0 left = 0
top = (lineno-1) * self.lineheight top = (lineno-1) * self.lineheight
right = self.leftmargin right = self.leftmargin
@ -95,6 +101,27 @@ def showline(self, lineno):
self.win.show((left, top), (right, bottom)) self.win.show((left, top), (right, bottom))
# Subroutine to count the number of lines in a string
def countlines(text):
n = 0
for c in text:
if c == '\n': n = n+1
if text and text[-1] != '\n': n = n+1 # Partial last line
return n
class SourceWindow(TextWindow):
def init(self, filename):
self.filename = filename
f = open(self.filename, 'r')
contents = f.read()
f.close()
return TextWindow.init(self, self.filename, contents)
# ------------------------------ testing ------------------------------
TESTFILE = 'srcwin.py' TESTFILE = 'srcwin.py'
def test(): def test():

75
Lib/stdwin/srcwin.py
View file

@ -7,58 +7,62 @@
WIDTH = 40 WIDTH = 40
MAXHEIGHT = 24 MAXHEIGHT = 24
class SourceWindow(basewin.BaseWindow):
def init(self, filename): class TextWindow(basewin.BaseWindow):
self.filename = filename
# def init(self, title, contents):
f = open(self.filename, 'r') # raise exception if not found self.contents = contents
self.contents = f.read() self.linecount = countlines(self.contents)
f.seek(0)
self.linecount = len(f.readlines())
f.close()
# #
self.lineheight = lh = stdwin.lineheight() self.lineheight = lh = stdwin.lineheight()
self.leftmargin = stdwin.textwidth('00000000') self.leftmargin = self.getmargin()
self.top = 0
self.rightmargin = 30000 # Infinity self.rightmargin = 30000 # Infinity
self.bottom = lh * self.linecount self.bottom = lh * self.linecount
# #
stdwin.setdefwinpos(0, 0)
width = WIDTH*stdwin.textwidth('0') width = WIDTH*stdwin.textwidth('0')
height = lh*min(MAXHEIGHT, self.linecount) height = lh*min(MAXHEIGHT, self.linecount)
stdwin.setdefwinsize(width, height) stdwin.setdefwinsize(width, height)
self = basewin.BaseWindow.init(self, filename) self = basewin.BaseWindow.init(self, title)
# #
self.win.setdocsize(0, self.bottom + lh) self.win.setdocsize(0, self.bottom)
self.initeditor() self.initeditor()
return self return self
def initeditor(self): def initeditor(self):
r = (self.leftmargin, 0), (self.rightmargin, self.bottom) r = (self.leftmargin, self.top), (self.rightmargin, self.bottom)
self.editor = self.win.textcreate(r) self.editor = self.win.textcreate(r)
self.editor.settext(self.contents) self.editor.settext(self.contents)
def closeeditor(self): def closeeditor(self):
self.editor.close() self.editor.close()
def reopen(self): # def reopen(self):
self.closeeditor() # self.closeeditor()
basewin.BaseWindow.reopen(self) # basewin.BaseWindow.reopen(self)
self.initeditor() # self.initeditor()
def close(self): # Override the following two methods to format line numbers differently
self.closeeditor()
basewin.BaseWindow.close(self)
# Override this method to format line numbers differently
def getmark(self, lineno): def getmark(self, lineno):
return `lineno` return `lineno`
def getmargin(self):
return stdwin.textwidth(`self.linecount + 1` + ' ')
# Event dispatcher, called from mainloop.mainloop()
def dispatch(self, event): def dispatch(self, event):
if event[0] == WE_NULL: return # Dummy tested by mainloop if event[0] == WE_NULL: return # Dummy tested by mainloop
if event[0] == WE_DRAW or not self.editor.event(event): if event[0] == WE_DRAW or not self.editor.event(event):
basewin.BaseWindow.dispatch(self, event) basewin.BaseWindow.dispatch(self, event)
# Event handlers
def close(self):
self.closeeditor()
basewin.BaseWindow.close(self)
def draw(self, detail): def draw(self, detail):
dummy = self.editor.draw(detail) dummy = self.editor.draw(detail)
# Draw line numbers # Draw line numbers
@ -75,7 +79,9 @@ def draw(self, detail):
finally: finally:
d.close() d.close()
def changemark(self, lineno): # Calls from outside
def changemark(self, lineno): # redraw the mark for a line
left = 0 left = 0
top = (lineno-1) * self.lineheight top = (lineno-1) * self.lineheight
right = self.leftmargin right = self.leftmargin
@ -87,7 +93,7 @@ def changemark(self, lineno):
finally: finally:
d.close() d.close()
def showline(self, lineno): def showline(self, lineno): # scroll to make a line visible
left = 0 left = 0
top = (lineno-1) * self.lineheight top = (lineno-1) * self.lineheight
right = self.leftmargin right = self.leftmargin
@ -95,6 +101,27 @@ def showline(self, lineno):
self.win.show((left, top), (right, bottom)) self.win.show((left, top), (right, bottom))
# Subroutine to count the number of lines in a string
def countlines(text):
n = 0
for c in text:
if c == '\n': n = n+1
if text and text[-1] != '\n': n = n+1 # Partial last line
return n
class SourceWindow(TextWindow):
def init(self, filename):
self.filename = filename
f = open(self.filename, 'r')
contents = f.read()
f.close()
return TextWindow.init(self, self.filename, contents)
# ------------------------------ testing ------------------------------
TESTFILE = 'srcwin.py' TESTFILE = 'srcwin.py'
def test(): def test():