62 lines
854 B
C
62 lines
854 B
C
#include <stdio.h>
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// replacing empty strings consisting of only spaces
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// to tabs and spaces so it keeps initial indentation
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int _getline(char s[], int lim)
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{
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int c, i, j;
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for (i = 0; (c = getchar()) != '\n'; ++i)
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{
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if (i < lim - 1)
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s[i] = c;
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}
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j = i;
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if (j > lim - 1)
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j = lim - 1;
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s[j] = '\0';
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return j - 1;
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}
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void entab(char to[], char from[], int columns)
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{
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int spaces_counter = 0;
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int from_i = 0;
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int to_i = 0;
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while (from[from_i] != '\0')
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{
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++spaces_counter;
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++from_i;
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if (spaces_counter == columns)
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{
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to[to_i] = '\t';
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++to_i;
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spaces_counter = 0;
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}
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}
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while (spaces_counter > 0)
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{
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to[to_i] = '_';
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++to_i;
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--spaces_counter;
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}
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to[to_i] = '\0';
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}
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main()
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{
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int size = 500;
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char from[size];
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char to[size];
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while (1)
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{
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_getline(from, size);
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entab(to, from, 4);
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printf("%s\n", to);
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}
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}
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