1 files changed, 150 insertions, 0 deletions
diff --git a/.vim/plugin/autotag.vim b/.vim/plugin/autotag.vim
new file mode 100644
index 0000000..8bb2d0e
--- /dev/null
+++ b/.vim/plugin/autotag.vim
@@ -0,0 +1,150 @@
+" This file supplies automatic tag regeneration when saving files
+" There's a problem with ctags when run with -a (append)
+" ctags doesn't remove entries for the supplied source file that no longer exist
+" so this script (implemented in python) finds a tags file for the file vim has
+" just saved, removes all entries for that source file and *then* runs ctags -a
+
+if has("python")
+
+python << EEOOFF
+import os
+import string
+import os.path
+import fileinput
+import sys
+import vim
+
+def echo(str):
+   str=str.replace('\\', '\\\\')
+   str=str.replace('"', "'")
+   vim.command("redraw | echo \"%s\"" % str)
+
+class AutoTag:
+   def __init__(self, excludesuffix="", ctags_cmd="ctags", verbose=0):
+      self.tags = {}
+      self.excludesuffix = [ "." + s for s in excludesuffix.split(".") ]
+      verbose = long(verbose)
+      if verbose > 0:
+         self.verbose = verbose
+      else:
+         self.verbose = 0
+      self.sep_used_by_ctags = '/'
+      self.cwd = os.getcwd()
+      self.ctags_cmd = ctags_cmd
+      self.count = 0
+
+   def findTagFile(self, source):
+      ( drive, file ) = os.path.splitdrive(source)
+      while file:
+         file = os.path.dirname(file)
+         tagsFile = os.path.join(drive, file, "tags")
+         self.diag(2, "does %s exist?", tagsFile)
+         if os.path.isfile(tagsFile):
+            self.diag(2, "Found tags file %s", tagsFile)
+            return tagsFile
+         elif not file or file == os.sep or file == "//" or file == "\\\\":
+            self.diag(2, "exhausted search for tag file for %s", source)
+            return None
+         self.diag(2, "Nope. :-| %s does NOT exist", tagsFile)
+      return None
+
+   def addSource(self, source):
+      if not source:
+         return
+      if os.path.splitext(source)[1] in self.excludesuffix:
+         self.diag(1, "Ignoring excluded file " + source)
+         return
+      tagsFile = self.findTagFile(source)
+      if tagsFile:
+         self.diag(2, "if tagsFile:")
+         relativeSource = source[len(os.path.dirname(tagsFile)):]
+         self.diag(2, "relativeSource = source[len(os.path.dirname(tagsFile)):]")
+         if relativeSource[0] == os.sep:
+            self.diag(2, "if relativeSource[0] == os.sep:")
+            relativeSource = relativeSource[1:]
+            self.diag(2, "relativeSource = relativeSource[1:]")
+         if os.sep != self.sep_used_by_ctags:
+            self.diag(2, "if os.sep != self.sep_used_by_ctags:")
+            relativeSource = string.replace(relativeSource, os.sep, self.sep_used_by_ctags)
+            self.diag(2, "relativeSource = string.replace(relativeSource, os.sep, self.sep_used_by_ctags)")
+         if self.tags.has_key(tagsFile):
+            self.diag(2, "if self.tags.has_key(tagsFile):")
+            self.tags[tagsFile].append(relativeSource)
+            self.diag(2, "self.tags[tagsFile].append(relativeSource)")
+         else:
+            self.diag(2, "else:")
+            self.tags[tagsFile] = [ relativeSource ]
+            self.diag(2, "self.tags[tagsFile] = [ relativeSource ]")
+
+   def stripTags(self, tagsFile, sources):
+      self.diag(1, "Removing tags for %s from tags file %s", (sources, tagsFile))
+      backup = ".SAFE"
+      for line in fileinput.input(files=tagsFile, inplace=True, backup=backup):
+         if line[-1:] == '\n':
+            line = line[:-1]
+         if line[-1:] == '\r':
+            line = line[:-1]
+         if line[0] == "!":
+            print line
+         else:
+            fields = string.split(line, "\t")
+            if len(fields) > 3:
+               found = False
+               for source in sources:
+                  if fields[1] == source:
+                     found = True
+                     break
+               if not found:
+                  print line
+            else:
+               print line
+      os.unlink(tagsFile + backup)
+
+   def rebuildTagFiles(self):
+      for tagsFile in self.tags.keys():
+         tagsDir = os.path.dirname(tagsFile)
+         sources = self.tags[tagsFile]
+         os.chdir(tagsDir)
+         self.stripTags(tagsFile, sources)
+         cmd = "%s -a " % self.ctags_cmd
+         for source in sources:
+            if os.path.isfile(source):
+               cmd += " '%s'" % source
+         self.diag(1, "%s: %s", (tagsDir, cmd))
+         (ch_in, ch_out) = os.popen2(cmd)
+         for line in ch_out:
+            pass
+      os.chdir(self.cwd)
+
+   def diag(self, level, msg, args = None):
+      if msg and args:
+         msg = msg % args
+      if level <= self.verbose:
+         echo(msg)
+EEOOFF
+
+function! AutoTag()
+python << EEOOFF
+at = AutoTag(vim.eval("g:autotagExcludeSuffixes"), vim.eval("g:autotagCtagsCmd"), long(vim.eval("g:autotagVerbosityLevel")))
+at.addSource(vim.eval("expand(\"%:p\")"))
+at.rebuildTagFiles()
+EEOOFF
+endfunction
+
+if !exists("g:autotagVerbosityLevel")
+   let g:autotagVerbosityLevel=0
+endif
+if !exists("g:autotagExcludeSuffixes")
+   let g:autotagExcludeSuffixes="tml.xml"
+endif
+if !exists("g:autotagCtagsCmd")
+   let g:autotagCtagsCmd="ctags"
+endif
+if !exists("g:autotag_autocmd_set")
+   let g:autotag_autocmd_set=1
+   autocmd BufWritePost,FileWritePost * call AutoTag ()
+endif
+
+endif " has("python")
+
+" vim:sw=3:ts=3