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cols: simplify filling with spaces 

Use printf("%*s", n, "") instead of allocating
a string filled with spaces.
This commit is contained in:
Jakob Kramer 2014-06-04 17:46:22 +02:00 committed by sin
parent 2e1580ed2d
commit 7f7e7dcbb9
1 changed files with 5 additions and 10 deletions
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15
cols.c
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@ -26,8 +26,8 @@ int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
long i, l, col; long i, l, col;
size_t maxlen = 0; size_t len;
char *space; int maxlen = 0;
struct winsize w; struct winsize w;
FILE *fp; FILE *fp;
@ -59,7 +59,7 @@ main(int argc, char *argv[])
} }
for(l = 0; l < b.nlines; ++l) { for(l = 0; l < b.nlines; ++l) {
size_t len = strlen(b.lines[l]); len = strlen(b.lines[l]);
if(len > 0 && b.lines[l][len-1] == '\n') if(len > 0 && b.lines[l][len-1] == '\n')
b.lines[l][--len] = '\0'; b.lines[l][--len] = '\0';
if(len > maxlen) if(len > maxlen)
@ -76,21 +76,16 @@ main(int argc, char *argv[])
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }
if(!(space = malloc(maxlen + 2)))
eprintf("malloc:");
memset(space, ' ', maxlen + 1);
space[maxlen + 1] = '\0';
n_rows = (b.nlines + (n_columns - 1)) / n_columns; n_rows = (b.nlines + (n_columns - 1)) / n_columns;
for(i = 0; i < n_rows; ++i) { for(i = 0; i < n_rows; ++i) {
for(l = i, col = 1; l < b.nlines; l += n_rows, ++col) { for(l = i, col = 1; l < b.nlines; l += n_rows, ++col) {
len = strlen(b.lines[l]);
fputs(b.lines[l], stdout); fputs(b.lines[l], stdout);
if(col < n_columns) if(col < n_columns)
fputs(space + strlen(b.lines[l]), stdout); printf("%*s", maxlen + 1 - (int)len, "");
} }
fputs("\n", stdout); fputs("\n", stdout);
} }
free(space);
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }