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make stdio open, read, and write operations cancellation points
[oweals/musl.git]
/
src
/
misc
/
dirname.c
1
#include <string.h>
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#include <libgen.h>
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char *dirname(char *s)
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{
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size_t i;
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if (!s || !*s || !strchr(s, '/')) return ".";
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i = strlen(s)-1;
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for (; i&&s[i]=='/'; i--);
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for (; i&&s[i-1]!='/'; i--);
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for (; i&&s[i-1]=='/'; i--);
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if (!i && *s=='/') i++;
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s[i] = 0;
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return s;
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}