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-rw-r--r--libsmartcols/src/calculate.c98
1 files changed, 56 insertions, 42 deletions
diff --git a/libsmartcols/src/calculate.c b/libsmartcols/src/calculate.c
index ad0b15d..84198da 100644
--- a/libsmartcols/src/calculate.c
+++ b/libsmartcols/src/calculate.c
@@ -12,19 +12,19 @@ static void dbg_column(struct libscols_table *tb, struct libscols_column *cl)
st = &cl->wstat;
- DBG(COL, ul_debugobj(cl, "%15s seq=%zu, width=%zd, "
- "hint=%d, max=%zu, min=%zu, "
+ DBG(COL, ul_debugobj(cl, "#%zu %12s: width=%zd "
+ "hint=%d max=%zu min=%zu "
"0x04%x [%s%s%s]",
- cl->header.data, cl->seqnum, cl->width,
+ cl->seqnum, cl->header.data, cl->width,
cl->width_hint >= 1.0 ? (int) cl->width_hint :
(int) (cl->width_hint * tb->termwidth),
st->width_max,
st->width_min,
cl->flags,
- cl->flags & SCOLS_FL_TRUNC ? "trunc" : "",
- scols_column_is_right(cl) ? " right" : "",
- scols_column_is_noextremes(cl) ? " noextrem" : ""));
+ cl->flags & SCOLS_FL_TRUNC ? "trunc " : "",
+ scols_column_is_right(cl) ? "right " : "",
+ scols_column_is_noextremes(cl) ? "noextrem " : ""));
}
static void dbg_columns(struct libscols_table *tb)
@@ -42,41 +42,38 @@ static int count_cell_width(struct libscols_table *tb,
struct libscols_column *cl,
struct ul_buffer *buf)
{
- size_t len;
- char *data;
- int rc;
+ size_t len = 0;
+ int rc = 0;
struct libscols_cell *ce;
- struct libscols_wstat *st;
+ char *data;
- rc = __cell_to_buffer(tb, ln, cl, buf);
+ ce = scols_line_get_cell(ln, cl->seqnum);
+ scols_table_set_cursor(tb, ln, cl, ce);
+
+ rc = __cursor_to_buffer(tb, buf, 1);
if (rc)
- return rc;
+ goto done;
data = ul_buffer_get_data(buf, NULL, NULL);
- if (!data)
- len = 0;
- else if (scols_column_is_customwrap(cl))
- len = cl->wrap_chunksize(cl, data, cl->wrapfunc_data);
- else if (scols_table_is_noencoding(tb))
- len = mbs_width(data);
- else
- len = mbs_safe_width(data);
-
- if (len == (size_t) -1) /* ignore broken multibyte strings */
- len = 0;
-
- ce = scols_line_get_cell(ln, cl->seqnum);
- ce->width = len;
+ if (data) {
+ len = scols_table_is_noencoding(tb) ?
+ mbs_width(data) :
+ mbs_safe_width(data);
- st = &cl->wstat;
- st->width_max = max(len, st->width_max);
+ if (len == (size_t) -1) /* ignore broken multibyte strings */
+ len = 0;
+ }
if (scols_column_is_tree(cl)) {
size_t treewidth = ul_buffer_get_safe_pointer_width(buf, SCOLS_BUFPTR_TREEEND);
cl->width_treeart = max(cl->width_treeart, treewidth);
}
- return 0;
+ ce->width = len;
+ cl->wstat.width_max = max(len, cl->wstat.width_max);
+done:
+ scols_table_reset_cursor(tb);
+ return rc;
}
static int walk_count_cell_width(struct libscols_table *tb,
@@ -121,7 +118,7 @@ static void count_column_deviation(struct libscols_table *tb, struct libscols_co
}
if (n)
- st->width_avg = sum / n;
+ st->width_avg = (double) sum / (double) n;
/* count deviation */
if (n > 1) {
@@ -136,7 +133,7 @@ static void count_column_deviation(struct libscols_table *tb, struct libscols_co
st->width_sqr_sum += diff * diff; /* aka pow(x, 2) */
}
- variance = st->width_sqr_sum / (n - 1);
+ variance = st->width_sqr_sum / (double) (n - 1);
st->width_deviation = sqrtroot(variance);
}
@@ -175,8 +172,9 @@ static int count_column_width(struct libscols_table *tb,
}
/* set minimal width according to header width */
- data = scols_cell_get_data(&cl->header);
- if (data) {
+ if (!scols_table_is_noheadings(tb) &&
+ (data = scols_cell_get_data(&cl->header))) {
+
size_t len = scols_table_is_noencoding(tb) ?
mbs_width(data) : mbs_safe_width(data);
@@ -242,8 +240,8 @@ static int cmp_deviation(struct list_head *a, struct list_head *b,
struct libscols_column *ca = list_entry(a, struct libscols_column, cl_columns);
struct libscols_column *cb = list_entry(b, struct libscols_column, cl_columns);
- double xa = ca->wstat.width_avg + (3*ca->wstat.width_deviation);
- double xb = cb->wstat.width_avg + (3*cb->wstat.width_deviation);
+ double xa = ca->wstat.width_avg + (3.0 * ca->wstat.width_deviation);
+ double xb = cb->wstat.width_avg + (3.0 * cb->wstat.width_deviation);
return cmp_numbers(xa, xb);
}
@@ -282,9 +280,15 @@ static void reduce_to_68(struct libscols_column *cl, size_t wanted)
if (st->width_deviation < 1.0)
return;
- new = st->width_avg + st->width_deviation;
+ new = (size_t) (st->width_avg + st->width_deviation);
+
if (new < st->width_min)
new = st->width_min;
+ else if (new > st->width_max)
+ new = st->width_max;
+
+ if (new >= cl->width)
+ return;
if (cl->width - new > wanted)
cl->width -= wanted;
@@ -509,6 +513,8 @@ int __scols_calculate(struct libscols_table *tb, struct ul_buffer *buf)
/* enlarge */
if (width < tb->termwidth) {
+ DBG(TAB, ul_debugobj(tb, " enlarge (extreme, avalable %zu)",
+ tb->termwidth - width));
if (ignore_extremes) {
if (!sorted) {
sort_columns(tb, cmp_deviation);
@@ -523,14 +529,17 @@ int __scols_calculate(struct libscols_table *tb, struct ul_buffer *buf)
continue;
if (cl->wstat.width_min == 0 && cl->width == 0)
continue;
+ if (cl->width >= cl->wstat.width_max)
+ continue;
add = tb->termwidth - width;
- if (add && cl->wstat.width_max &&
- cl->width + add > cl->wstat.width_max)
+ if (add && cl->wstat.width_max
+ && cl->width + add > cl->wstat.width_max)
add = cl->wstat.width_max - cl->width;
+
if (!add)
continue;
- DBG(TAB, ul_debugobj(tb, " add +%zd (extreme %s)",
+ DBG(COL, ul_debugobj(cl, " add +%zd (%s)",
add, cl->header.data));
cl->width += add;
width += add;
@@ -541,7 +550,8 @@ int __scols_calculate(struct libscols_table *tb, struct ul_buffer *buf)
}
if (width < tb->termwidth && scols_table_is_maxout(tb)) {
- DBG(TAB, ul_debugobj(tb, " enlarge width (max-out)"));
+ DBG(TAB, ul_debugobj(tb, " enlarge (max-out, avalable %zu)",
+ tb->termwidth - width));
/* try enlarging all columns */
while (width < tb->termwidth) {
@@ -549,7 +559,7 @@ int __scols_calculate(struct libscols_table *tb, struct ul_buffer *buf)
while (scols_table_next_column(tb, &itr, &cl) == 0) {
if (scols_column_is_hidden(cl))
continue;
- DBG(TAB, ul_debugobj(tb, " enlarge (max-out %s)",
+ DBG(COL, ul_debugobj(cl, " add +1 (%s)",
cl->header.data));
cl->width++;
width++;
@@ -559,9 +569,13 @@ int __scols_calculate(struct libscols_table *tb, struct ul_buffer *buf)
}
} else if (width < tb->termwidth) {
/* enlarge the last column */
- DBG(TAB, ul_debugobj(tb, " enlarge width (last column)"));
+ DBG(TAB, ul_debugobj(tb, " enlarge (last column, avalable %zu)",
+ tb->termwidth - width));
if (!scols_column_is_right(last_cl)) {
+ DBG(COL, ul_debugobj(last_cl, " add +%zu (%s)",
+ tb->termwidth - width,
+ last_cl->header.data));
last_cl->width += tb->termwidth - width;
width = tb->termwidth;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 12:52:14 +0000