Last change
on this file since 400 was 337, checked in by coas-nagasima, 6 years ago |
ASP3版ECNLを追加
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-
Property svn:eol-style
set to
native
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Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
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File size:
1.1 KB
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Rev | Line | |
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[337] | 1 | #include "stdio_impl.h"
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| 2 | #include <string.h>
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| 3 | #include <inttypes.h>
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| 4 | #include <errno.h>
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| 5 |
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| 6 | #define MIN(a,b) ((a)<(b) ? (a) : (b))
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| 7 |
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| 8 | ssize_t getdelim(char **restrict s, size_t *restrict n, int delim, FILE *restrict f)
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| 9 | {
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| 10 | char *tmp;
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| 11 | unsigned char *z;
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| 12 | size_t k;
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| 13 | size_t i=0;
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| 14 | int c;
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| 15 |
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| 16 | FLOCK(f);
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| 17 |
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| 18 | if (!n || !s) {
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| 19 | f->flags |= F_ERR;
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| 20 | FUNLOCK(f);
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| 21 | errno = EINVAL;
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| 22 | return -1;
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| 23 | }
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| 24 |
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| 25 | if (!*s) *n=0;
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| 26 |
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| 27 | for (;;) {
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| 28 | z = memchr(f->rpos, delim, f->rend - f->rpos);
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| 29 | k = z ? z - f->rpos + 1 : f->rend - f->rpos;
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| 30 | if (i+k+1 >= *n) {
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| 31 | if (k >= SIZE_MAX/2-i) goto oom;
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| 32 | size_t m = i+k+2;
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| 33 | if (!z && m < SIZE_MAX/4) m += m/2;
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| 34 | tmp = realloc(*s, m);
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| 35 | if (!tmp) {
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| 36 | m = i+k+2;
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| 37 | tmp = realloc(*s, m);
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| 38 | if (!tmp) goto oom;
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| 39 | }
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| 40 | *s = tmp;
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| 41 | *n = m;
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| 42 | }
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| 43 | memcpy(*s+i, f->rpos, k);
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| 44 | f->rpos += k;
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| 45 | i += k;
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| 46 | if (z) break;
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| 47 | if ((c = getc_unlocked(f)) == EOF) {
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| 48 | if (!i || !feof(f)) {
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| 49 | FUNLOCK(f);
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| 50 | return -1;
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| 51 | }
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| 52 | break;
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| 53 | }
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| 54 | if (((*s)[i++] = c) == delim) break;
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| 55 | }
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| 56 | (*s)[i] = 0;
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| 57 |
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| 58 | FUNLOCK(f);
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| 59 |
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| 60 | return i;
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| 61 | oom:
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| 62 | f->flags |= F_ERR;
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| 63 | FUNLOCK(f);
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| 64 | errno = ENOMEM;
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| 65 | return -1;
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| 66 | }
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| 67 |
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| 68 | weak_alias(getdelim, __getdelim);
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