95 lines
1.8 KiB
C
95 lines
1.8 KiB
C
#ifndef KSTRING_H
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#define KSTRING_H
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#include <stdlib.h>
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#include <string.h>
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#ifndef kroundup32
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#define kroundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
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#endif
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#ifndef KSTRING_T
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#define KSTRING_T kstring_t
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typedef struct __kstring_t {
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size_t l, m;
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char *s;
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} kstring_t;
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#endif
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static inline void ks_resize(kstring_t *s, size_t size)
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{
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if (s->m < size) {
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s->m = size;
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kroundup32(s->m);
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s->s = (char*)realloc(s->s, s->m);
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}
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}
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static inline int kputsn(const char *p, int l, kstring_t *s)
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{
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if (s->l + l + 1 >= s->m) {
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s->m = s->l + l + 2;
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kroundup32(s->m);
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s->s = (char*)realloc(s->s, s->m);
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}
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memcpy(s->s + s->l, p, l);
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s->l += l;
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s->s[s->l] = 0;
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return l;
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}
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static inline int kputs(const char *p, kstring_t *s)
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{
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return kputsn(p, strlen(p), s);
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}
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static inline int kputc(int c, kstring_t *s)
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{
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if (s->l + 1 >= s->m) {
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s->m = s->l + 2;
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kroundup32(s->m);
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s->s = (char*)realloc(s->s, s->m);
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}
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s->s[s->l++] = c;
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s->s[s->l] = 0;
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return c;
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}
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static inline int kputw(int c, kstring_t *s)
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{
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char buf[16];
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int l, x;
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if (c == 0) return kputc('0', s);
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for (l = 0, x = c < 0? -c : c; x > 0; x /= 10) buf[l++] = x%10 + '0';
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if (c < 0) buf[l++] = '-';
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if (s->l + l + 1 >= s->m) {
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s->m = s->l + l + 2;
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kroundup32(s->m);
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s->s = (char*)realloc(s->s, s->m);
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}
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for (x = l - 1; x >= 0; --x) s->s[s->l++] = buf[x];
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s->s[s->l] = 0;
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return 0;
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}
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static inline int kputuw(unsigned c, kstring_t *s)
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{
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char buf[16];
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int l, i;
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unsigned x;
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if (c == 0) return kputc('0', s);
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for (l = 0, x = c; x > 0; x /= 10) buf[l++] = x%10 + '0';
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if (s->l + l + 1 >= s->m) {
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s->m = s->l + l + 2;
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kroundup32(s->m);
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s->s = (char*)realloc(s->s, s->m);
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}
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for (i = l - 1; i >= 0; --i) s->s[s->l++] = buf[i];
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s->s[s->l] = 0;
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return 0;
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}
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int ksprintf(kstring_t *s, const char *fmt, ...);
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#endif
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