From b0a3a31d5caaeafb63ff415fc9b86b537b759f21 Mon Sep 17 00:00:00 2001
From: Thibaut Horel <thibaut.horel@gmail.com>
Date: Thu, 4 Feb 2016 21:15:50 -0500
Subject: Remove redundant entry list

---
 BibTeX.py | 36 +++++++++++++++---------------------
 1 file changed, 15 insertions(+), 21 deletions(-)

(limited to 'BibTeX.py')

diff --git a/BibTeX.py b/BibTeX.py
index 1fe4c94..e07fe63 100644
--- a/BibTeX.py
+++ b/BibTeX.py
@@ -25,26 +25,24 @@ class ParseError(Exception):
 class BibTeX:
     """A parsed BibTeX file"""
     def __init__(self):
-        self.entries = []  # List of BibTeXEntry
-        self.byKey = {}  # Map from BibTeX key to BibTeX entry.
+        self.entries = {}
 
     def addEntry(self, ent):
         """Add a BibTeX entry to this file."""
         k = ent.key
-        if self.byKey.get(ent.key.lower()):
+        if k.lower() in self.entries:
             print >> sys.stderr, "Already have an entry named %s" % k
             return
-        self.entries.append(ent)
-        self.byKey[ent.key.lower()] = ent
+        self.entries[k.lower()] = ent
 
     def resolve(self):
         """Validate all entries in this file, and resolve cross-references"""
         seen = {}
-        for ent in self.entries:
+        for ent in self.entries.values():
             seen.clear()
             while ent.get('crossref'):
                 try:
-                    cr = self.byKey[ent['crossref'].lower()]
+                    cr = self.entries[ent['crossref'].lower()]
                 except KeyError:
                     print "No such crossref: %s" % ent['crossref']
                     break
@@ -64,20 +62,16 @@ class BibTeX:
                         ent.entries[k] = cr.entries[k]
 
             ent.resolve()
-        newEntries = []
         rk = config.REQUIRE_KEY
         if rk is None:
             # hack: if no key is required, require "title", since every
             # entry will have a title.
             rk = "title"
 
-        for ent in self.entries:
+        for ent in self.entries.values():
             if ent.type in config.OMIT_ENTRIES or not ent.has_key(rk):
                 ent.check()
-                del self.byKey[ent.key.lower()]
-            else:
-                newEntries.append(ent)
-        self.entries = newEntries
+                del self.entries[ent.key.lower()]
 
 
 class FileIter:
@@ -117,6 +111,7 @@ BRACE_CLOSE_RE = re.compile(r'^([^\{\}]*)\}(.*)')
 BRACE_OPEN_RE = re.compile(r'^([^\{\}]*\{)(.*)')
 RAW_DATA_RE = re.compile(r'^([^\s\},]+)(.*)')
 
+
 class Parser:
     """Parser class: reads BibTeX from a file and returns a BibTeX object."""
     # Fields
@@ -136,7 +131,7 @@ class Parser:
         self.newStrings = {}
         self.invStrings = {}
         for k, v in config.INITIAL_STRINGS.items():
-            self.invStrings[v]=k
+            self.invStrings[v] = k
         self.fileiter = fileiter
         if result is None:
             result = BibTeX()
@@ -326,8 +321,7 @@ class Parser:
                                  self.litStringLine)
             elif self.entryLine:
                 raise ParseError("Unexpected EOF at line %s (entry started "
-                                 "on %s)" % (self.fileiter.lineno,
-                                             self.entryLine))
+                                 "on %s)" % (self.lineno, self.entryLine))
 
         self.result.invStrings = self.invStrings
         self.result.newStrings = self.newStrings
@@ -336,7 +330,7 @@ class Parser:
 
     def _parse(self):
         line = self.fileiter.next()
-        while 1:
+        while True:
             # Skip blank lines.
             while not line or line.isspace() or OUTER_COMMENT_RE.match(line):
                 line = self.fileiter.next()
@@ -349,7 +343,7 @@ class Parser:
                 self.entryLine = 0
             else:
                 raise ParseError("Bad input at line %s (expected a new entry.)"
-                                 % self.fileiter.lineno)
+                                 % self.lineno)
 
 
 def parseFile(filename, result=None):
@@ -358,7 +352,7 @@ def parseFile(filename, result=None):
     p = Parser(f, {}, result)
     r = p.parse()
     r.resolve()
-    for e in r.entries:
+    for e in r.entries.values():
         e.check()
     return r
 
@@ -369,7 +363,7 @@ def parseString(string, result=None):
     p = Parser(f, {}, result)
     r = p.parse()
     r.resolve()
-    for e in r.entries:
+    for e in r.entries.values():
         e.check()
     return r
 
@@ -381,7 +375,7 @@ if __name__ == '__main__':
 
     r = parseFile(fname)
 
-    for e in r.entries:
+    for e in r.entries.values():
         if e.type in ("proceedings", "journal"):
             continue
         print e.to_html()
-- 
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