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ensure that string field 'build' operation only evaluates arguments one time

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fix some minor documentation errors
return proper type from string field space allocator


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7841 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2006-01-06 19:19:17 +00:00
parent d44823b5b8
commit 1fe5108763
2 changed files with 43 additions and 13 deletions
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25
utils.c
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@@ -943,8 +943,8 @@ int __ast_string_field_init(struct ast_string_field_pool *pool, size_t size,
return pool->base ? 0 : -1;
}
char *__ast_string_field_alloc_space(struct ast_string_field_pool *pool, size_t needed,
ast_string_field *fields, int num_fields)
ast_string_field __ast_string_field_alloc_space(struct ast_string_field_pool *pool, size_t needed,
ast_string_field *fields, int num_fields)
{
char *result = NULL;
@@ -974,3 +974,24 @@ char *__ast_string_field_alloc_space(struct ast_string_field_pool *pool, size_t
pool->space -= needed;
return result;
}
void __ast_string_field_index_build(struct ast_string_field_pool *pool,
ast_string_field *fields, int num_fields,
int index, const char *format, ...)
{
char s;
size_t needed;
va_list ap1, ap2;
va_start(ap1, format);
va_copy(ap2, ap1);
needed = vsnprintf(&s, 1, format, ap1) + 1;
va_end(ap1);
if ((fields[index] = __ast_string_field_alloc_space(pool, needed, fields, num_fields)))
vsprintf((char *) fields[index], format, ap2);
va_end(ap2);
}