localrepo: refactor prepush logic
Simplifies the prepush check logic and makes it a lot more direct and
comprehensible. Instead of comparing the total local vs. remote head count, it
compares the number of new vs. removed heads.
#!/bin/sh
cat > writepatterns.py <<EOF
import sys
path = sys.argv[1]
patterns = sys.argv[2:]
fp = file(path, 'wb')
for pattern in patterns:
count = int(pattern[0:-1])
char = pattern[-1] + '\n'
fp.write(char*count)
fp.close()
EOF
echo % prepare repo
hg init a
cd a
# These initial lines of Xs were not in the original file used to generate
# the patch. So all the patch hunks need to be applied to a constant offset
# within this file. If the offset isn't tracked then the hunks can be
# applied to the wrong lines of this file.
python ../writepatterns.py a 34X 10A 1B 10A 1C 10A 1B 10A 1D 10A 1B 10A 1E 10A 1B 10A
hg commit -Am adda
# This is a cleaner patch generated via diff
# In this case it reproduces the problem when
# the output of hg export does not
echo % import patch
hg import -v -m 'b' -d '2 0' - <<EOF
--- a/a 2009-12-08 19:26:17.000000000 -0800
+++ b/a 2009-12-08 19:26:17.000000000 -0800
@@ -9,7 +9,7 @@
A
A
B
-A
+a
A
A
A
@@ -53,7 +53,7 @@
A
A
B
-A
+a
A
A
A
@@ -75,7 +75,7 @@
A
A
B
-A
+a
A
A
A
EOF
echo % compare imported changes against reference file
python ../writepatterns.py aref 34X 10A 1B 1a 9A 1C 10A 1B 10A 1D 10A 1B 1a 9A 1E 10A 1B 1a 9A
diff aref a