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# numeric before string, ascending by index
function comp_num_str(s1, v1, s2, v2, n1, n2) {
n1 = s1 + 0
n2 = s2 + 0
if (n1 == s1)
return (n2 == s2) ? (n1 - n2) : -1
else if (n2 == s2)
return 1
return (s1 < s2) ? -1 : (s1 != s2)
}
# ascending index number
function comp_idx_num(s1, v1, s2, v2)
{
return (s1 - s2)
}
# ascending value number
function comp_val_num(s1, v1, s2, v2, num)
{
num = "^[-+]?([0-9]+[.]?[0-9]*|[.][0-9]+)([eE][-+]?[0-9]+)?$"
# force stable sort, compare as strings if not numeric
if ((v1 - v2) == 0 && (v1 !~ num || v2 !~ num))
return comp_val_str(s1, v1, s2, v2)
return (v1 - v2)
}
# ascending value string
function comp_val_str(s1, v1, s2, v2)
{
v1 = v1 ""
v2 = v2 ""
return (v1 < v2) ? -1 : (v1 != v2)
}
# deterministic, by value (and index), descending numeric
function comp_val_idx(s1, v1, s2, v2)
{
return (v1 != v2) ? (v2 - v1) : (s2 - s1)
}
BEGIN {
a[1] = 10; a[100] = 1; a[2] = 200
a["cat"] = "tac"; a["rat"] = "tar";a["bat"] = "tab"
print "--- number before string, ascending by index ---"
PROCINFO["sorted_in"] = "comp_num_str"
for (i in a)
printf("%-10s%-s\n", i, a[i])
delete a
a[11] = 10; a[100] = 5; a[2] = 200
a[4] = 1; a[20] = 10; a[14] = 10
print "--- deterministic, by value (index), descending numeric ---"
PROCINFO["sorted_in"] = "comp_val_idx"
for (i in a)
printf("%-10s%-s\n", i, a[i])
for (IGNORECASE=0; IGNORECASE <= 1; IGNORECASE++) {
makea(a)
SORT_STR = "comp_val_num"
printf("--- asort(a, b, \"%s\"), IGNORECASE = %d---\n", SORT_STR, IGNORECASE)
asort2(a, "")
makea(a)
SORT_STR = "comp_val_str"
printf("--- asort(a, b, \"%s\"), IGNORECASE = %d---\n", SORT_STR, IGNORECASE)
asort2(a, "")
makea(a)
SORT_STR = "comp_val_str"
printf("--- asort(a, a, \"%s\"), IGNORECASE = %d---\n", SORT_STR, IGNORECASE)
asort1(a, "")
}
}
function makea(aa)
{
delete aa
aa[1] = "barz";
aa[2] = "blattt";
aa[3] = "Zebra";
aa[4] = 1234;
aa[5] = 234;
}
# source array != destination array
function asort2(c, s, d, k, m)
{
if (SORT_STR < 0)
m = asort(c, d);
else
m = asort(c, d, SORT_STR);
for (k=1; k <= m; k++) {
if (isarray(d[k]))
asort2(d[k], s"["k"]")
else
printf("%-10s:%-10s%-10s\n", s"["k"]", c[k], d[k])
}
}
# source array == destination array
function asort1(c, s, k, m)
{
if (SORT_STR < 0)
m = asort(c)
else if (SORT_STR != "")
m = asort(c, c, SORT_STR)
else
m = asort(c, c);
for (k=1; k <= m; k++) {
if (isarray(c[k]))
asort1(c[k], s"["k"]")
else
printf("%-10s:%-10s\n", s"["k"]", c[k])
}
}
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