b7b8a0efc1
add a few buffer_init*_forread variants to pretend we have type safety make sure buffer_init_staticcontents handles flushing attempts
39 lines
991 B
C
39 lines
991 B
C
// goddamn glibc!
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#define _XOPEN_SOURCE
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#include <libowfat/byte.h>
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#include <libowfat/buffer.h>
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#include <string.h> /* for memccpy */
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ssize_t buffer_get_token(buffer* b,char* x,size_t len,const char* charset,size_t setlen) {
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size_t blen;
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if ((ssize_t)len<0) len=(ssize_t)(((size_t)-1)>>1);
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if (setlen==1) {
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for (blen=0; blen<len; ) {
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ssize_t n=buffer_feed(b);
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char* d;
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if (n<=0) return blen;
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if (n>(ssize_t)(len-blen)) n=len-blen;
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if ((d=memccpy(x+blen,b->x+b->p,(unsigned char)charset[0],n))) {
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/* memccpy returns a pointer to the next char after matching
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* char or NULL if it copied all bytes it was asked for */
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b->p+=(d-(x+blen));
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return d-x-1;
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}
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blen+=n;
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b->p+=n;
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}
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} else {
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for (blen=0;blen<len;++blen) {
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register ssize_t r;
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if ((r=buffer_getc(b,x))<0) return r;
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if (r==0) { *x=0; break; }
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if (byte_chr(charset,setlen,*x)<setlen) break;
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++x;
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}
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}
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return (ssize_t)blen;
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}
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