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libsmartcols: add scols_table_move_column() 

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2017-03-29 14:06:37 +02:00
parent 52f35f1ecc
commit 7bdefc7fc0
4 changed files with 35 additions and 0 deletions
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1
libsmartcols/docs/libsmartcols-sections.txt
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@ -139,6 +139,7 @@ scols_table_is_nolinesep
scols_table_is_nowrap
scols_table_is_raw
scols_table_is_tree
scols_table_move_column
scols_table_new_column
scols_table_new_line
scols_table_next_column

1
libsmartcols/src/libsmartcols.h.in
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@ -244,6 +244,7 @@ extern void scols_unref_table(struct libscols_table *tb);
extern int scols_table_add_column(struct libscols_table *tb, struct libscols_column *cl);
extern int scols_table_remove_column(struct libscols_table *tb, struct libscols_column *cl);
extern int scols_table_remove_columns(struct libscols_table *tb);
extern int scols_table_move_column(struct libscols_table *tb, struct libscols_column *pre, struct libscols_column *cl);
extern struct libscols_column *scols_table_new_column(struct libscols_table *tb, const char *name, double whint, int flags);
extern int scols_table_next_column(struct libscols_table *tb, struct libscols_iter *itr, struct libscols_column **cl);
extern const char *scols_table_get_column_separator(const struct libscols_table *tb);

1
libsmartcols/src/libsmartcols.sym
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@ -162,4 +162,5 @@ global:
SMARTCOLS_2.30 {
global:
scols_cell_get_alignment;
scols_table_move_column;
} SMARTCOLS_2.29;

32
libsmartcols/src/table.c
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@ -251,6 +251,38 @@ int scols_table_remove_columns(struct libscols_table *tb)
return 0;
}
/**
* scols_table_move_column:
* @tb: table
* @pre: column before the column
* @cl: colum to move
*
* Move the @cl behind @pre. The the @pre is NULL then the @col is the fist
* column in the table.
*
* Returns: 0, a negative number in case of an error.
*/
int scols_table_move_column(struct libscols_table *tb,
struct libscols_column *pre,
struct libscols_column *cl)
{
struct list_head *head;
struct libscols_iter itr;
size_t n = 0;
list_del_init(&cl->cl_columns); /* remove from old position */
head = pre ? &pre->cl_columns : &tb->tb_columns;
list_add(&cl->cl_columns, head); /* add to the new place */
/* fix seq. numbers */
scols_reset_iter(&itr, SCOLS_ITER_FORWARD);
while (scols_table_next_column(tb, &itr, &cl) == 0)
cl->seqnum = n++;
return 0;
}
/**
* scols_table_new_column:
* @tb: table