Merge pull request #1 from cngkaygusuz/master

Add Scrutinizer-CI configuration and other niceties

1 files changed, 55 insertions, 0 deletions

diff --git a/examples/position.py b/examples/position.py
new file mode 100644
index 0000000..984c018
--- /dev/null
+++ b/examples/position.py
@@ -0,0 +1,55 @@
+from pyparsing import *

+

+text = """Lorem ipsum dolor sit amet, consectetur adipisicing 

+elit, sed do eiusmod tempor incididunt ut labore et dolore magna 

+aliqua. Ut enim ad minim veniam, quis nostrud exercitation 

+ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis 

+aute irure dolor in reprehenderit in voluptate velit esse cillum 

+dolore eu fugiat nulla pariatur. Excepteur sint occaecat 

+cupidatat non proident, sunt in culpa qui officia deserunt 

+mollit anim id est laborum"""

+

+# find all words beginning with a vowel

+vowels = "aeiouAEIOU"

+initialVowelWord = Word(vowels,alphas)

+

+# Unfortunately, searchString will advance character by character through

+# the input text, so it will detect that the initial "Lorem" is not an

+# initialVowelWord, but then it will test "orem" and think that it is. So

+# we need to add a do-nothing term that will match the words that start with

+# consonants, but we will just throw them away when we match them. The key is

+# that, in having been matched, the parser will skip over them entirely when

+# looking for initialVowelWords.

+consonants = ''.join(c for c in alphas if c not in vowels)

+initialConsWord = Word(consonants, alphas).suppress()

+

+# using scanString to locate where tokens are matched

+for t,start,end in (initialConsWord|initialVowelWord).scanString(text):

+    if t:

+        print(start,':', t[0])

+

+# add parse action to annotate the parsed tokens with their location in the

+# input string

+def addLocnToTokens(s,l,t):

+    t['locn'] = l

+    t['word'] = t[0]

+initialVowelWord.setParseAction(addLocnToTokens)

+

+for ivowelInfo in (initialConsWord | initialVowelWord).searchString(text):

+    if not ivowelInfo:

+        continue

+    print(ivowelInfo.locn, ':', ivowelInfo.word)

+

+

+# alternative - add an Empty that will save the current location

+def location(name):

+    return Empty().setParseAction(lambda s,l,t: t.__setitem__(name,l))

+locateInitialVowels = location("locn") + initialVowelWord("word")

+

+# search through the input text

+for ivowelInfo in (initialConsWord | locateInitialVowels).searchString(text):

+    if not ivowelInfo:

+        continue

+    print(ivowelInfo.locn, ':', ivowelInfo.word)

+    

+