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/*
* Functions for handling growing arrays.
*/
#include "vim.h"
#include "ascii.h"
#include "misc2.h"
#include "garray.h"
//#include "globals.h"
#include "memline.h"
/*
* Clear an allocated growing array.
*/
void ga_clear(garray_T *gap)
{
vim_free(gap->ga_data);
ga_init(gap);
}
/*
* Clear a growing array that contains a list of strings.
*/
void ga_clear_strings(garray_T *gap)
{
int i;
for (i = 0; i < gap->ga_len; ++i)
vim_free(((char_u **)(gap->ga_data))[i]);
ga_clear(gap);
}
/*
* Initialize a growing array. Don't forget to set ga_itemsize and
* ga_growsize! Or use ga_init2().
*/
void ga_init(garray_T *gap)
{
gap->ga_data = NULL;
gap->ga_maxlen = 0;
gap->ga_len = 0;
}
void ga_init2(garray_T *gap, int itemsize, int growsize)
{
ga_init(gap);
gap->ga_itemsize = itemsize;
gap->ga_growsize = growsize;
}
/*
* Make room in growing array "gap" for at least "n" items.
* Return FAIL for failure, OK otherwise.
*/
int ga_grow(garray_T *gap, int n)
{
size_t old_len;
size_t new_len;
char_u *pp;
if (gap->ga_maxlen - gap->ga_len < n) {
if (n < gap->ga_growsize)
n = gap->ga_growsize;
new_len = gap->ga_itemsize * (gap->ga_len + n);
pp = (gap->ga_data == NULL)
? alloc((unsigned)new_len) : vim_realloc(gap->ga_data, new_len);
if (pp == NULL)
return FAIL;
old_len = gap->ga_itemsize * gap->ga_maxlen;
vim_memset(pp + old_len, 0, new_len - old_len);
gap->ga_maxlen = gap->ga_len + n;
gap->ga_data = pp;
}
return OK;
}
/*
* For a growing array that contains a list of strings: concatenate all the
* strings with a separating comma.
* Returns NULL when out of memory.
*/
char_u *ga_concat_strings(garray_T *gap)
{
int i;
int len = 0;
char_u *s;
for (i = 0; i < gap->ga_len; ++i)
len += (int)STRLEN(((char_u **)(gap->ga_data))[i]) + 1;
s = alloc(len + 1);
if (s != NULL) {
*s = NUL;
for (i = 0; i < gap->ga_len; ++i) {
if (*s != NUL)
STRCAT(s, ",");
STRCAT(s, ((char_u **)(gap->ga_data))[i]);
}
}
return s;
}
/*
* Concatenate a string to a growarray which contains characters.
* Note: Does NOT copy the NUL at the end!
*/
void ga_concat(garray_T *gap, char_u *s)
{
int len = (int)STRLEN(s);
if (ga_grow(gap, len) == OK) {
mch_memmove((char *)gap->ga_data + gap->ga_len, s, (size_t)len);
gap->ga_len += len;
}
}
/*
* Append one byte to a growarray which contains bytes.
*/
void ga_append(garray_T *gap, int c)
{
if (ga_grow(gap, 1) == OK) {
*((char *)gap->ga_data + gap->ga_len) = c;
++gap->ga_len;
}
}
#if defined(UNIX) || defined(WIN3264)
/*
* Append the text in "gap" below the cursor line and clear "gap".
*/
void append_ga_line(garray_T *gap)
{
/* Remove trailing CR. */
if (gap->ga_len > 0
&& !curbuf->b_p_bin
&& ((char_u *)gap->ga_data)[gap->ga_len - 1] == CAR)
--gap->ga_len;
ga_append(gap, NUL);
ml_append(curwin->w_cursor.lnum++, gap->ga_data, 0, FALSE);
gap->ga_len = 0;
}
#endif
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