author | Junio C Hamano <gitster@pobox.com> | |
Sun, 20 Dec 2009 07:20:16 +0000 (23:20 -0800) | ||
committer | Junio C Hamano <gitster@pobox.com> | |
Sun, 20 Dec 2009 07:20:16 +0000 (23:20 -0800) |
* maint:
rebase -i: abort cleanly if the editor fails to launch
technical-docs: document hash API
api-strbuf.txt: fix typos and document launch_editor()
rebase -i: abort cleanly if the editor fails to launch
technical-docs: document hash API
api-strbuf.txt: fix typos and document launch_editor()
Documentation/technical/api-hash.txt | patch | blob | history | |
Documentation/technical/api-strbuf.txt | patch | blob | history | |
git-rebase--interactive.sh | patch | blob | history |
index c784d3edcb2537b84bfb5db3da55faaf45995155..e5061e0677e05f8127b0808104269961ee21f830 100644 (file)
hash API
========
-Talk about <hash.h>
+The hash API is a collection of simple hash table functions. Users are expected
+to implement their own hashing.
-(Linus)
+Data Structures
+---------------
+
+`struct hash_table`::
+
+ The hash table structure. The `array` member points to the hash table
+ entries. The `size` member counts the total number of valid and invalid
+ entries in the table. The `nr` member keeps track of the number of
+ valid entries.
+
+`struct hash_table_entry`::
+
+ An opaque structure representing an entry in the hash table. The `hash`
+ member is the entry's hash key and the `ptr` member is the entry's
+ value.
+
+Functions
+---------
+
+`init_hash`::
+
+ Initialize the hash table.
+
+`free_hash`::
+
+ Release memory associated with the hash table.
+
+`insert_hash`::
+
+ Insert a pointer into the hash table. If an entry with that hash
+ already exists, a pointer to the existing entry's value is returned.
+ Otherwise NULL is returned. This allows callers to implement
+ chaining, etc.
+
+`lookup_hash`::
+
+ Lookup an entry in the hash table. If an entry with that hash exists
+ the entry's value is returned. Otherwise NULL is returned.
+
+`for_each_hash`::
+
+ Call a function for each entry in the hash table. The function is
+ expected to take the entry's value as its only argument and return an
+ int. If the function returns a negative int the loop is aborted
+ immediately. Otherwise, the return value is accumulated and the sum
+ returned upon completion of the loop.
index 7438149249364ca8837811771b072b20990b3a5d..a0e0f850f83fe164dd7c1ca87d001fe485ba2ec2 100644 (file)
strbufs has some invariants that are very important to keep in mind:
-. The `buf` member is never NULL, so you it can be used in any usual C
+. The `buf` member is never NULL, so it can be used in any usual C
string operations safely. strbuf's _have_ to be initialized either by
`strbuf_init()` or by `= STRBUF_INIT` before the invariants, though.
+
* `struct strbuf`
-This is string buffer structure. The `len` member can be used to
+This is the string buffer structure. The `len` member can be used to
determine the current length of the string, and `buf` member provides access to
the string itself.
comments are considered contents to be removed or not.
`launch_editor`::
+
+ Launch the user preferred editor to edit a file and fill the buffer
+ with the file's contents upon the user completing their editing. The
+ third argument can be used to set the environment which the editor is
+ run in. If the buffer is NULL the editor is launched as usual but the
+ file's contents are not read into the buffer upon completion.
index 0bd3bf78b8563f29a24dbc7dcc4ef308b3381157..d52932878c05af1aeb714c0cf4d48dbbcddc19ee 100755 (executable)
cp "$TODO" "$TODO".backup
git_editor "$TODO" ||
- die "Could not execute editor"
+ die_abort "Could not execute editor"
has_action "$TODO" ||
die_abort "Nothing to do"