[PATCH 5 of 9 hglib] client: add grep command

[Idan Kamara]

# HG changeset patch
# User Idan Kamara <idankk86 at gmail.com>
# Date 1313773693 -10800
# Node ID 9bd819da245aa135591d29426f000af997fc5010
# Parent  5833f6ac0929e53cc3cd085ecf8d19ebb688007e
client: add grep command

diff -r 5833f6ac0929 -r 9bd819da245a hglib/client.py
--- a/hglib/client.py	Fri Aug 19 20:08:13 2011 +0300
+++ b/hglib/client.py	Fri Aug 19 20:08:13 2011 +0300
@@ -396,6 +396,44 @@
 
         return bool(eh)
 
+    def grep(self, pattern, files=[], all=False, text=False, follow=False,
+             ignorecase=False, fileswithmatches=False, line=False, user=False,
+             date=False, include=None, exclude=None):
+        """
+        search for a pattern in specified files and revisions
+
+        yields (filename, revision, [line, [match status, [user, [date, [match]]]]])
+        per match depending on the given options.
+        """
+        if not isinstance(files, list):
+            files = [files]
+
+        args = cmdbuilder('grep', *[pattern] + files, all=all, a=text, f=follow,
+                          i=ignorecase, l=fileswithmatches, n=line, u=user, d=date,
+                          I=include, X=exclude)
+        args.append('-0')
+
+        def eh(ret, out, err):
+            if ret != 1:
+                raise error.CommandError(args, ret, out, err)
+            return ''
+
+        out = self.rawcommand(args, eh=eh).split('\0')
+
+        fieldcount = 3
+        if user:
+            fieldcount += 1
+        if date:
+            fieldcount += 1
+        if line:
+            fieldcount += 1
+        if all:
+            fieldcount += 1
+        if fileswithmatches:
+            fieldcount -= 1
+
+        return util.grouper(fieldcount, out)
+
     def diff(self, files=[], revs=[], change=None, text=False,
              git=False, nodates=False, showfunction=False, reverse=False,
              ignoreallspace=False, ignorespacechange=False, ignoreblanklines=False,
diff -r 5833f6ac0929 -r 9bd819da245a tests/test-grep.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-grep.py	Fri Aug 19 20:08:13 2011 +0300
@@ -0,0 +1,38 @@
+import common
+
+class test_grep(common.basetest):
+    def test_basic(self):
+        self.append('a', 'a\n')
+        self.append('b', 'ab\n')
+        self.client.commit('first', addremove=True)
+
+        # no match
+        self.assertEquals(list(self.client.grep('c')), [])
+
+        self.assertEquals(list(self.client.grep('a')),
+                          [('a', '0', 'a'), ('b', '0', 'ab')])
+        self.assertEquals(list(self.client.grep('a', 'a')), [('a', '0', 'a')])
+
+        self.assertEquals(list(self.client.grep('b')), [('b', '0', 'ab')])
+
+    def test_options(self):
+        self.append('a', 'a\n')
+        self.append('b', 'ab\n')
+        rev, node = self.client.commit('first', addremove=True)
+
+        self.assertEquals([('a', '0', '+', 'a'), ('b', '0', '+', 'ab')],
+                          list(self.client.grep('a', all=True)))
+
+        self.assertEquals([('a', '0'), ('b', '0')],
+                          list(self.client.grep('a', fileswithmatches=True)))
+
+        self.assertEquals([('a', '0', '1', 'a'), ('b', '0', '1', 'ab')],
+                          list(self.client.grep('a', line=True)))
+
+        self.assertEquals([('a', '0', 'test', 'a'), ('b', '0', 'test', 'ab')],
+                          list(self.client.grep('a', user=True)))
+
+        self.assertEquals([('a', '0', '1', '+', 'test'),
+                           ('b', '0', '1', '+', 'test')],
+                          list(self.client.grep('a', all=True, user=True, line=True,
+                                                fileswithmatches=True)))