diff options
Diffstat (limited to 'sphinx/util/stemmer.py')
| -rw-r--r-- | sphinx/util/stemmer.py | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/sphinx/util/stemmer.py b/sphinx/util/stemmer.py index 7eeb77b2b..10ce90656 100644 --- a/sphinx/util/stemmer.py +++ b/sphinx/util/stemmer.py @@ -111,14 +111,16 @@ class PorterStemmer(object): return self.cons(j) def cvc(self, i): - """cvc(i) is TRUE <=> i-2,i-1,i has the form consonant - vowel - consonant + """cvc(i) is TRUE <=> i-2,i-1,i has the form + consonant - vowel - consonant and also if the second c is not w,x or y. this is used when trying to restore an e at the end of a short e.g. cav(e), lov(e), hop(e), crim(e), but snow, box, tray. """ - if i < (self.k0 + 2) or not self.cons(i) or self.cons(i-1) or not self.cons(i-2): + if i < (self.k0 + 2) or not self.cons(i) or self.cons(i-1) \ + or not self.cons(i-2): return 0 ch = self.b[i] if ch == 'w' or ch == 'x' or ch == 'y': @@ -138,7 +140,8 @@ class PorterStemmer(object): return 1 def setto(self, s): - """setto(s) sets (j+1),...k to the characters in the string s, readjusting k.""" + """setto(s) sets (j+1),...k to the characters in the string s, + readjusting k.""" length = len(s) self.b = self.b[:self.j+1] + s + self.b[self.j+length+1:] self.k = self.j + length @@ -193,7 +196,8 @@ class PorterStemmer(object): self.setto("e") def step1c(self): - """step1c() turns terminal y to i when there is another vowel in the stem.""" + """step1c() turns terminal y to i when there is another vowel in + the stem.""" if (self.ends("y") and self.vowelinstem()): self.b = self.b[:self.k] + 'i' + self.b[self.k+1:] @@ -236,7 +240,8 @@ class PorterStemmer(object): # To match the published algorithm, delete this phrase def step3(self): - """step3() dels with -ic-, -full, -ness etc. similar strategy to step2.""" + """step3() dels with -ic-, -full, -ness etc. similar strategy + to step2.""" if self.b[self.k] == 'e': if self.ends("icate"): self.r("ic") elif self.ends("ative"): self.r("") |