- 论坛徽章:
- 0
|
本帖最后由 funexploit 于 2014-10-01 22:12 编辑
如果只是需要看懂代码的话,我的完全可以满足要求:
1、建立tmp.c,复制代码
2、全选,运行格式化代码的命令C-M-\
格式化后的代码如下:- function mod(p)
- {
- return (p % 256)}
- function div(p)
- {
- return int (p / 256)} function str_val(str, ret, chars, n, i, k, c)
- {
- if (str ~ /^0[0 - 7] * $ /) {
- n = length(str);
- ret = 0;
- for (i = 1; i <= n; i++) {
- c = substr(str, i, 1);
- if ((k = index("01234567", c)) > 0)
- k--;
- ret = ret * 8 + k}
- } else if (str ~ /^0[xX][[: xdigit:]] + /) {
- str = substr(str, 3);
- n = length(str);
- ret = 0;
- for (i = 1; i <= n; i++) {
- c = substr(str, i, 1);
- c = tolower(c);
- if ((k = index("0123456789", c)) > 0)
- k--;
- else if ((k = index("abcdef", c)) > 0)
- k += 9;
- ret = ret * 16 + k}
- } else if (str ~
- /^[-+]? ([0 - 9] +
- ([.][0 - 9] * ([Ee][0 - 9] +) ?) ? |([.][0 - 9] +
- ([Ee][-+]?[0 - 9]
- +) ?)) $ /) {
- ret = str + 0} else
- ret = "NOT-A-NUMBER";
- return ret}
- function hex_ary(p, ary)
- {
- p = str_val(p);
- ary = "";
- while (p > 0) {
- ary = sprintf("%s:%d", ary, mod(p));
- p = div(p)}
- ary = substr(ary, 2);
- return ary}
- function b_mul(a, b, c, i, j, m, n)
- {
- m = length(a);
- n = length(b);
- for (i = 1; i <= m; i++)
- for (j = 1; j <= n; j++) {
- c[i + j - 1] += a[i] * b[j];
- c[i + j] += div(c[i + j - 1]);
- c[i + j - 1] = mod(c[i + j - 1])}
- for (i = length(c); c[i] < 1 && i > 1; i--)
- delete c[i]} BEGIN {
- split(key, ks, ":");
- split(ord, o, ":");
- for (i = 1; i <= l; i++)
- k[i] = str_val(sprintf("%s%s", "0x", ks[length(ks) + 1 - o[i]]));
- split(hex_ary(ka), a, ":");
- split(hex_ary(kb), b, ":");
- split(hex_ary(kc), c, ":");
- h = l;
- la = length(a);
- lb = length(b);
- lc = length(c);
- h = (h < la) ? la : h;
- h = (h < lb) ? lb : h;
- h = (h < lc) ? lc : h;
- ta = str_val(ka);
- tb = str_val(kb);
- tc = str_val(kc)} {
- for (i = 1; i <= NF; i++)
- printf "%02X ", xor(k[i], $i);
- if (NF < l)
- exit;
- tk = 0;
- for (i = l; i > 0; i--)
- tk = tk * 256 + k[o[i]];
- delete t;
- delete d;
- for (i = 1; i <= 2 * h; i++)
- t[i] = (i > lb) ? 0 : b[i];
- for (i = 1; i <= l; i++)
- d[i] = k[o[i]];
- b_mul(d, a, t);
- delete p;
- tp = int ((tk * ta + tb) / tc);
- i = 1;
- while (tp > 0) {
- p[i++] = mod(tp);
- tp = div(tp)};
- delete q;
- b_mul(p, c, q);
- m = length(q);
- for (i = 1; i <= m; i++) {
- t[i] -= q[i];
- t[i + 1] -= (t[i] < 0);
- t[i] = mod(t[i] + 256)}
- for (i = length(t); t[i] < 1 && i > 1; i--)
- delete t[i];
- for (i = 1; i <= l; i++)
- k[o[i]] = t[i];
- }
复制代码 格式化命令C-M-\对应的elisp函数:- ;; 调用外部的indent命令格式化代码
- (defun edx-indent-region (start end)
- (interactive "r")
- (let ((old-region-end (- (point-max) end)))
- (save-excursion
- ;; 先调用Gnu indent命令对选中的代码进行格式化
- (call-process-region
- start end "indent" t (list (buffer-name) nil) nil
- "-kr" ; K&R风格
- "-l80" ; 超过这个值后断行
- )
- ;; 然后用emacs自带的indent-region命令对代码进行二次格式化
- (indent-region start (- (point-max) old-region-end))
- (save-buffer)
- )))
复制代码 |
|