[HarfBuzz] harfbuzz-ng: Branch 'master'
Behdad Esfahbod
behdad at kemper.freedesktop.org
Tue Sep 20 08:22:52 PDT 2011
util/Makefile.am | 2 +
util/hb-diff | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 61 insertions(+)
New commits:
commit e700bce1189465a159a7c3c179f231be224f31cc
Author: Behdad Esfahbod <behdad at behdad.org>
Date: Tue Sep 20 11:20:53 2011 -0400
[util] Add hb-diff
A diff program written in Python that is more suitable for comparing
hb-shape output from different backends. Main differences with stock
diff:
1. It outputs one line's comparison at a time, as opposed to batching
'+' lines and '-' lines.
2. It colors the part of the line that changed, taking word boundaries
into consideration.
You can pipe the colored output to 'less -r'.
diff --git a/util/Makefile.am b/util/Makefile.am
index cb91381..223a59a 100644
--- a/util/Makefile.am
+++ b/util/Makefile.am
@@ -57,4 +57,6 @@ bin_PROGRAMS += hb-shape
endif
endif
+EXTRA_DIST += hb-diff
+
-include $(top_srcdir)/git.mk
diff --git a/util/hb-diff b/util/hb-diff
new file mode 100755
index 0000000..7b91601
--- /dev/null
+++ b/util/hb-diff
@@ -0,0 +1,59 @@
+#!/usr/bin/python
+
+import sys, re, difflib, os
+
+red_color = green_color = end_color = ""
+if 1 or os.isatty (sys.stdout.fileno ()):
+ red_color = '\033[41;37;1m'
+ green_color = '\033[42;37;1m'
+ end_color = '\033[m'
+
+def fancy_diff (l1, l2):
+
+ sep = "|<>@+,="
+ r ="(["+sep+"]?)([^"+sep+"]*)"
+ ss = [re.findall (r, l) for l in (l1, l2)]
+ ss = [reduce ((lambda a,b: a+b), s) for s in ss]
+ ss = [[x+"\n" for x in s] for s in ss]
+ oo = ["",""]
+ st = [0,0]
+ for l in difflib.Differ().compare (*ss):
+ if l[0] == '?':
+ continue
+ if l[0] == ' ':
+ for i in range(2):
+ if st[i]:
+ oo[i] += end_color
+ st[i] = 0
+ oo = [o + l[2:] for o in oo]
+ continue
+ if l[0] == '-':
+ if not st[0]:
+ oo[0] += red_color
+ st[0] = 1
+ oo[0] += l[2:]
+ continue
+ if l[0] == '+':
+ if not st[1]:
+ oo[1] += green_color
+ st[1] = 1
+ oo[1] += l[2:]
+ for i in range(2):
+ if st[i]:
+ oo[i] += end_color
+ st[i] = 0
+ oo = [o.replace ('\n', '') for o in oo]
+ if oo[0] == oo[1]:
+ return ' ' + oo[0] + '\n'
+ return '-'+oo[0]+'\n'+'+'+oo[1]+'\n'
+
+
+f1, f2 = (file (f) for f in sys.argv[1:3])
+
+for (l1,l2) in zip (f1, f2):
+ if l1 == l2:
+ print " " + l1.strip ()
+ continue
+ l1, l2 = l1.strip (), l2.strip ()
+
+ sys.stdout.writelines (fancy_diff (l1, l2))
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