/**
* scols_table_new_column:
* @tb: table
* @name: column header
* @whint: column width hint (absolute width: N > 1; relative width: N < 1)
* @flags: flags integer
*
* This is shortcut for
*
* cl = scols_new_column();
* scols_column_set_....(cl, ...);
* scols_table_add_column(tb, cl);
*
* The column width is possible to define by three ways:
*
* @whint = 0..1 : relative width, percent of terminal width
*
* @whint = 1..N : absolute width, empty colum will be truncated to
* the column header width
*
* @whint = 1..N
*
* The column is necessary to address by
* sequential number. The first defined column has the colnum = 0. For example:
*
* scols_table_new_column(tab, "FOO", 0.5, 0); // colnum = 0
* scols_table_new_column(tab, "BAR", 0.5, 0); // colnum = 1
* .
* .
* scols_line_get_cell(line, 0); // FOO column
* scols_line_get_cell(line, 1); // BAR column
*
* Returns: newly allocated column
*/
struct libscols_column *scols_table_new_column(struct libscols_table *tb,
const char *name,
double whint,
int flags)
{
struct libscols_column *cl;
struct libscols_cell *hr;
assert (tb);
if (!tb)
return NULL;
cl = scols_new_column();
if (!cl)
return NULL;
/* set column name */
hr = scols_column_get_header(cl);
if (!hr)
goto err;
if (scols_cell_set_data(hr, name))
goto err;
scols_column_set_whint(cl, whint);
scols_column_set_flags(cl, flags);
if (scols_table_add_column(tb, cl)) /* this increments column ref-counter */
goto err;
scols_unref_column(cl);
return cl;
err:
scols_unref_column(cl);
return NULL;
}
static struct libscols_column *parse_column(FILE *f)
{
size_t len = 0;
char *line = NULL;
int nlines = 0;
struct libscols_column *cl = NULL;
while (getline(&line, &len, f) != -1) {
char *p = strrchr(line, '\n');
if (p)
*p = '\0';
switch (nlines) {
case 0: /* NAME */
{
struct libscols_cell *hr;
cl = scols_new_column();
if (!cl)
goto fail;
hr = scols_column_get_header(cl);
if (!hr || scols_cell_set_data(hr, line))
goto fail;
break;
}
case 1: /* WIDTH-HINT */
{
double whint = strtod_or_err(line, "failed to parse column whint");
if (scols_column_set_whint(cl, whint))
goto fail;
break;
}
case 2: /* FLAGS */
{
int num_flags = parse_column_flags(line);
if (scols_column_set_flags(cl, num_flags))
goto fail;
if (strcmp(line, "wrapnl") == 0) {
scols_column_set_wrapfunc(cl,
scols_wrapnl_chunksize,
scols_wrapnl_nextchunk,
NULL);
scols_column_set_safechars(cl, "\n");
}
break;
}
case 3: /* COLOR */
if (scols_column_set_color(cl, line))
goto fail;
break;
default:
break;
}
nlines++;
}
free(line);
return cl;
fail:
free(line);
scols_unref_column(cl);
return NULL;
}
