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garray: comment and refactor a bit more

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The following functions are affected:

- ga_remove_duplicate_strings
- ga_append
This commit is contained in:
Nicolas Hillegeer 2014-04-27 10:50:56 +02:00 committed by Thiago de Arruda
parent eea98c4d3b
commit 852f0aaae8
1 changed files with 15 additions and 8 deletions
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23
src/garray.c
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@ -76,24 +76,30 @@ void ga_grow(garray_T *gap, int n)
gap->ga_data = pp; gap->ga_data = pp;
} }
/// Sort "gap" and remove duplicate entries. "gap" is expected to contain a /// Sort "gap" and remove duplicate entries. "gap" is expected to contain a
/// list of file names in allocated memory. /// list of file names in allocated memory.
/// ///
/// @param gap /// @param gap
void ga_remove_duplicate_strings(garray_T *gap) void ga_remove_duplicate_strings(garray_T *gap)
{ {
int i; char_u **fnames = gap->ga_data;
int j;
char_u **fnames = (char_u **)gap->ga_data;
// sort the growing array, which puts duplicates next to each other
sort_strings(fnames, gap->ga_len); sort_strings(fnames, gap->ga_len);
for (i = gap->ga_len - 1; i > 0; --i)
// loop over the growing array in reverse
for (int i = gap->ga_len - 1; i > 0; i--) {
if (fnamecmp(fnames[i - 1], fnames[i]) == 0) { if (fnamecmp(fnames[i - 1], fnames[i]) == 0) {
vim_free(fnames[i]); vim_free(fnames[i]);
for (j = i + 1; j < gap->ga_len; ++j)
// close the gap (move all strings one slot lower)
for (int j = i + 1; j < gap->ga_len; j++) {
fnames[j - 1] = fnames[j]; fnames[j - 1] = fnames[j];
}
--gap->ga_len; --gap->ga_len;
} }
}
} }
/// For a growing array that contains a list of strings: concatenate all the /// For a growing array that contains a list of strings: concatenate all the
@ -165,8 +171,9 @@ void ga_concat(garray_T *gap, const char_u *restrict s)
void ga_append(garray_T *gap, char c) void ga_append(garray_T *gap, char c)
{ {
ga_grow(gap, 1); ga_grow(gap, 1);
*((char *)gap->ga_data + gap->ga_len) = c; char *str = gap->ga_data;
++gap->ga_len; str[gap->ga_len] = c;
gap->ga_len++;
} }
#if defined(UNIX) || defined(WIN3264) #if defined(UNIX) || defined(WIN3264)