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gdc / gdc.test / runnable / wc3.d

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// PERMUTE_ARGS:
// EXECUTE_ARGS: runnable/extra-files/alice30.txt

import std.stdio;
import std.file;

int main (string[] args)
{
    int w_total;
    int l_total;
    int c_total;
    int[string] dictionary;

    writefln("   lines   words   bytes file");
    foreach (arg; args[1 .. args.length])
    {
	int w_cnt, l_cnt, c_cnt;
	size_t wstart;
	bool inword;

	auto input = cast(string)std.file.read(arg);

	foreach (j, c; input)
	{
	    if (c == '\n')
		++l_cnt;
	    if (c >= '0' && c <= '9')
	    {
	    }
	    else if (c >= 'a' && c <= 'z' ||
		     c >= 'A' && c <= 'Z')
	    {
		if (!inword)
		{
		    wstart = j;
		    inword = true;
		    ++w_cnt;
		}
	    }
	    else if (inword)
	    {	auto word = input[wstart .. j];

		dictionary[word]++;
		inword = false;
	    }
	    ++c_cnt;
	}
	if (inword)
	{   auto w = input[wstart .. input.length];
	    dictionary[w]++;
	}
	writefln("%8s%8s%8s %s", l_cnt, w_cnt, c_cnt, arg);
	l_total += l_cnt;
	w_total += w_cnt;
	c_total += c_cnt;
    }

    if (args.length > 2)
    {
	writefln("--------------------------------------\n%8s%8s%8s total",
	    l_total, w_total, c_total);
    }

    writefln("--------------------------------------");

    foreach (word1; dictionary.keys.sort)
    {
	writefln("%3s %s", dictionary[word1], word1);
    }
    return 0;
}