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string_list: add function string_list_append_nodup()

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Add a new function that appends a string to a string_list without
copying it.  This can be used to pass ownership of an already-copied
string to a string_list that has strdup_strings set.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty
2012-09-12 16:04:42 +02:00
committed by Junio C Hamano
parent 0ce9864461
commit e448fed8e6
3 changed files with 47 additions and 8 deletions
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17
Documentation/technical/api-string-list.txt
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@ -20,8 +20,8 @@ If you need something advanced, you can manually malloc() the `items`
member (you need this if you add things later) and you should set the
`nr` and `alloc` members in that case, too.
. Adds new items to the list, using `string_list_append` or
`string_list_insert`.
. Adds new items to the list, using `string_list_append`,
`string_list_append_nodup`, or `string_list_insert`.
. Can check if a string is in the list using `string_list_has_string` or
`unsorted_string_list_has_string` and get it from the list using
@ -100,7 +100,18 @@ write `string_list_insert(...)->util = ...;`.
`string_list_append`::
Append a new string to the end of the string_list.
Append a new string to the end of the string_list. If
`strdup_string` is set, then the string argument is copied;
otherwise the new `string_list_entry` refers to the input
string.
`string_list_append_nodup`::
Append a new string to the end of the string_list. The new
`string_list_entry` always refers to the input string, even if
`strdup_string` is set. This function can be used to hand
ownership of a malloc()ed string to a `string_list` that has
`strdup_string` set.
`sort_string_list`::