From 7a6f5b2c1d83fe62c62f0c30cad28eb091d52dfe Mon Sep 17 00:00:00 2001
From: necoro <>
Date: Fri, 20 Apr 2007 14:44:45 +0000
Subject: Made qt plugin-ready; lots of documentation

---
 portato/gui/qt/highlighter.py | 74 ++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 66 insertions(+), 8 deletions(-)

(limited to 'portato/gui/qt/highlighter.py')

diff --git a/portato/gui/qt/highlighter.py b/portato/gui/qt/highlighter.py
index 5572930..74d9ac9 100644
--- a/portato/gui/qt/highlighter.py
+++ b/portato/gui/qt/highlighter.py
@@ -19,30 +19,59 @@ from portato.helper import debug
 import re # prefer Python-Module over Qt-one
 
 class EbuildHighlighter (Qt.QSyntaxHighlighter):
+	"""A QSyntaxHighlighter implementation for the use with ebuild-syntax."""
 
 	NORMAL_STATE = 0
 	STRING_STATE = 1
 
 	def __init__ (self, edit):
+		"""Constructor.
+
+		@param edit: the EditWidget to use the highlighter with
+		@type edit: Qt.QTextEdit"""
+
 		Qt.QSyntaxHighlighter.__init__(self, edit)
 		
+		#
+		# the regular expressions ... *muahahaha*
+		#
+		
+		# comments
 		self.comment = self.__create(r'#.*', color = "steelblue", italic = True)
+		
+		# bash variables
 		self.bashVar = self.__create(r'(\$\{.+?\})|(\$\w+)', color = "green")
 		
+		# a string
+		self.string = self.__create(r'(?<!\\)"', color = "fuchsia")
+		
+		# the syntax elements, which are checked in a loop
 		self.syntax = {}
+
+		# bash syntax
 		self.syntax["bashSyn"] = self.__create(r'\b(case|do|done|elif|else|esac|exit|fi|for|function|if|in|local|read|return|select|shift|then|time|until|while)\b', color = "navy", underline = True)
 
+		# special bash commands
 		self.syntax["bashCmd"] = self.__create(r'\b(make|awk|cat|cd|chmod|chown|cp|echo|env|export|grep|head|let|ln|mkdir|mv|rm|sed|set|tail|tar|touch|unset)\b', color = "navy", bold = True)
 		
+		# portage variables
 		self.syntax["portVar"] = self.__create(r'\b((ARCH|HOMEPAGE|DESCRIPTION|IUSE|SRC_URI|LICENSE|SLOT|KEYWORDS|FILESDIR|WORKDIR|(P|R)?DEPEND|PROVIDE|DISTDIR|RESTRICT|USERLAND)|(S|D|T|PV|PF|P|PN|A)|C(XX)?FLAGS|LDFLAGS|C(HOST|TARGET|BUILD))\b', color = "saddlebrown", bold = True)
 		
+		# portage commands
 		self.syntax["portCmd"] = self.__create(r'\b(e(begin|end|conf|install|make|warn|infon?|error|patch)|die|built_with_use|use(_(with|enable))?|inherit|hasq?|(has|best)_version|unpack|(do|new)(ins|s?bin|doc|lib(|\.so|\.a)|man|info|exe|initd|confd|envd|pam|menu|icon)|do(python|sed|dir|hard|sym|html|jar|mo)|keepdir|prepall(|docs|info|man|strip)|prep(info|lib|lib\.(so|a)|man|strip)|(|doc|ins|exe)into|f(owners|perms)|(exe|ins|dir)opts)\b', color = "saddlebrown", bold = True)
 		
+		# portage functions, i.e. the functions implemented by the ebuild
 		self.syntax["portFunc"] = self.__create(r'^(src_(unpack|compile|install|test)|pkg_(config|nofetch|setup|(pre|post)(inst|rm)))', color = "green")
 		
-		self.string = self.__create(r'(?<!\\)"', color = "fuchsia")
-
 	def do_reg_exp (self, syntaxTuple, string):
+		"""Tries to match a regular expression and if this succeeds, 
+		sets the text format.
+
+		@param syntaxTuple: tuple holding regexp and format
+		@type sytaxTuple: (RE-object, Qt.QTextCharFormat)
+		@param string: the string to look in
+		@type string: string"""
+
 		regexp, format = syntaxTuple
 
 		match = regexp.search(string)
@@ -55,19 +84,27 @@ class EbuildHighlighter (Qt.QSyntaxHighlighter):
 			match = regexp.search(string, span[1])
 
 	def highlightBlock (self, string):
+		"""This function is called, whenever the edit want to have some text checked.
+		
+		@param string: the text to check
+		@type string: Qt.QString"""
+
 		string = str(string) # we got a QString here
 
+		# check the normal syntax elements
 		for t in self.syntax.values():
 			self.do_reg_exp(t, string)
 
+		# reset to normal state :)
 		self.setCurrentBlockState(self.NORMAL_STATE)
 
 		# look for strings
 		prevStart = 0
 		foundEnd = False
 		stringMatch = self.string[0].search(string)
-		if self.previousBlockState() == self.STRING_STATE:
-			if stringMatch is None:
+		
+		if self.previousBlockState() == self.STRING_STATE: # we were in a string last time
+			if stringMatch is None: # and there is no end of string in this line
 				self.setFormat(0, len(string), self.string[1])
 				self.setCurrentBlockState(self.STRING_STATE)
 			else:
@@ -75,17 +112,22 @@ class EbuildHighlighter (Qt.QSyntaxHighlighter):
 
 		while stringMatch is not None:
 
-			if foundEnd:
+			if foundEnd: # we know that the string will end in this block
 				self.setCurrentBlockState(self.NORMAL_STATE)
 				self.setFormat(prevStart, stringMatch.end() - prevStart, self.string[1])
+				
+				# look for a possible start of another string
 				stringMatch = self.string[0].search(string, stringMatch.end())
 				foundEnd = False
-			else:
+			
+			else: # we have entered a new string
+				
 				prevStart = stringMatch.start()
-				stringMatch = self.string[0].search(string, stringMatch.end())
+				stringMatch = self.string[0].search(string, stringMatch.end()) # the end of string
+				
 				if stringMatch is not None:
 					foundEnd = True
-				else:
+				else: # no string end: mark the rest of the line as string
 					self.setCurrentBlockState(self.STRING_STATE)
 					self.setFormat(prevStart, len(string) - prevStart, self.string[1])
 
@@ -93,6 +135,22 @@ class EbuildHighlighter (Qt.QSyntaxHighlighter):
 		self.do_reg_exp(self.comment, string) # do comments last
 
 	def __create (self, regexp, color = None, italic = False, bold = False, underline = False):
+		"""This creates a syntax tuple.
+		
+		@param regexp: the regular expression
+		@type regexp: string
+		@param color: the color to take; if None, take standard color
+		@type color: string
+		@param italic: italic-flag
+		@type italic: bool
+		@param bold: bold-flag
+		@type bold: bool
+		@param underline: underline-flag
+		@type underline: bool
+		
+		@returns: the created syntax-tuple
+		@rtype: (RE-object, Qt.QTextCharFormat)
+		"""
 
 		compRe = re.compile(regexp)
 		format = Qt.QTextCharFormat()
-- 
cgit v1.2.3-70-g09d2