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BEGIN {
split("c: ::ab+", fs_arr, ":")
}
{
for (i = 1; i in fs_arr; ++i) {
split($0, a, fs_arr[i], seps)
print zipcat(a, seps)
dump_array(seps)
}
}
END {
seps[1] = "123"; seps[5] = 10
for (i = 1; i in fs_arr; ++i) {
split("", a, fs_arr[i], seps)
dump_array(seps)
}
}
function dump_array(a, i, mini, maxi)
{
mini = minidx(a) + 0
maxi = maxidx(a) + 0
printf "{"
for (i = mini; i <= maxi; ++i)
if (i in a) {
if (i > mini)
printf ", "
printf "%d => \"%s\"", i, a[i]
}
printf "}\n"
}
function zipcat(a, b, c)
{
zip(a, b, c)
return cat(c)
}
function cat(a, mini, maxi, i, s)
{
mini = minidx(a) + 0
maxi = maxidx(a) + 0
for (i = mini; i <= maxi; ++i)
if (i in a)
s = s a[i]
return s
}
function zip(a, b, c, mini, maxi, i)
{
del(c)
mini = minidx2(a, b) + 0
maxi = maxidx2(a, b) + 0
for (i = mini; i <= maxi; ++i) {
if (i in a)
c[i] = a[i]
if (i in b)
c[i] = c[i] b[i]
}
}
function maxidx2(a, b)
{
if (emptyarr(a))
return maxidx(b)
else if (emptyarr(b))
return maxidx(a)
else
return max(maxidx(a), maxidx(b))
}
function minidx2(a, b)
{
if (emptyarr(a))
return minidx(b)
else if (emptyarr(b))
return minidx(a)
else
return min(minidx(a), minidx(b))
}
function maxidx(a, i, m)
{
if (emptyarr(a))
m = ""
else {
m = choose(a) + 0
for (i in a) {
i += 0
if (i > m)
m = i
}
}
return m
}
function minidx(a, i, m)
{
if (emptyarr(a))
m = ""
else {
m = choose(a) + 0
for (i in a) {
i += 0
if (i < m)
m = i
}
}
return m
}
function choose(a, m)
{
for (m in a)
return m
return ""
}
function emptyarr(a, k)
{
for (k in a)
return 0
return 1
}
# portable delete
function del(a)
{
split("", a)
}
function max(x, y)
{
return x > y ? x : y
}
function min(x, y)
{
return x < y ? x : y
}
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