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printf: allow flags for the %s format string aswell - sbase - suckless unix too… |
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git clone git://git.suckless.org/sbase |
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commit 1cc5a57fd7f0c72d9e4c383cfb5c7decf39fa346 |
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parent 61be841f5cc4019890c769cec33744616614ea10 |
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Author: Hiltjo Posthuma <[email protected]> |
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Date: Sun, 25 Jul 2021 14:24:41 +0200 |
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printf: allow flags for the %s format string aswell |
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This is useful for example to left-align strings and pad them with spaces. |
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printf '%-12.12s: %s\n' 'user' "$USER" |
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Diffstat: |
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M printf.c | 6 +++++- |
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1 file changed, 5 insertions(+), 1 deletion(-) |
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--- |
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diff --git a/printf.c b/printf.c |
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@@ -127,7 +127,11 @@ main(int argc, char *argv[]) |
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free(rarg); |
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break; |
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case 's': |
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- printf("%*.*s", width, precision, arg); |
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+ fmt = estrdup(flag ? "%#*.*s" : "%*.*s"); |
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+ if (flag) |
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+ fmt[1] = flag; |
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+ printf(fmt, width, precision, arg); |
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+ free(fmt); |
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break; |
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case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': |
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for (j = 0; isspace(arg[j]); j++); |
