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/// @file garray.c
///
/// Functions for handling growing arrays.
#include <string.h>
#include "vim.h"
#include "ascii.h"
#include "misc2.h"
#include "memory.h"
#include "path.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);
// Initialize growing array without resetting itemsize or growsize
gap->ga_data = NULL;
gap->ga_maxlen = 0;
gap->ga_len = 0;
}
/// Clear a growing array that contains a list of strings.
///
/// @param gap
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.
///
/// @param gap
/// @param itemsize
/// @param growsize
void ga_init(garray_T *gap, int itemsize, int growsize)
{
gap->ga_data = NULL;
gap->ga_maxlen = 0;
gap->ga_len = 0;
gap->ga_itemsize = itemsize;
gap->ga_growsize = growsize;
}
/// Make room in growing array "gap" for at least "n" items.
///
/// @param gap
/// @param n
void 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)
: xrealloc(gap->ga_data, new_len);
old_len = gap->ga_itemsize * gap->ga_maxlen;
memset(pp + old_len, 0, new_len - old_len);
gap->ga_maxlen = gap->ga_len + n;
gap->ga_data = pp;
}
}
/// Sort "gap" and remove duplicate entries. "gap" is expected to contain a
/// list of file names in allocated memory.
///
/// @param gap
void ga_remove_duplicate_strings(garray_T *gap)
{
int i;
int j;
char_u **fnames = (char_u **)gap->ga_data;
sort_strings(fnames, gap->ga_len);
for (i = gap->ga_len - 1; i > 0; --i)
if (fnamecmp(fnames[i - 1], fnames[i]) == 0) {
vim_free(fnames[i]);
for (j = i + 1; j < gap->ga_len; ++j)
fnames[j - 1] = fnames[j];
--gap->ga_len;
}
}
/// For a growing array that contains a list of strings: concatenate all the
/// strings with a separating comma.
///
/// @param gap
///
/// @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);
*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!
///
/// @param gap
/// @param s
void ga_concat(garray_T *gap, char_u *s)
{
int len = (int)STRLEN(s);
ga_grow(gap, len);
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.
///
/// @param gap
/// @param c
void ga_append(garray_T *gap, int c)
{
ga_grow(gap, 1);
*((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".
///
/// @param 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 // if defined(UNIX) || defined(WIN3264)
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