tgethead.c - plan9port - [fork] Plan 9 from user space
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       ---
       tgethead.c (737B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <bin.h>
            4 #include <httpd.h>
            5 
            6 /*
            7  * read in some header lines, either one or all of them.
            8  * copy results into header log buffer.
            9  */
           10 int
           11 hgethead(HConnect *c, int many)
           12 {
           13         Hio *hin;
           14         char *s, *p, *pp;
           15         int n;
           16 
           17         hin = &c->hin;
           18         for(;;){
           19                 s = (char*)hin->pos;
           20                 pp = s;
           21                 while(p = memchr(pp, '\n', (char*)hin->stop - pp)){
           22                         if(!many || p == pp || (p == pp + 1 && *pp == '\r')){
           23                                 pp = p + 1;
           24                                 break;
           25                         }
           26                         pp = p + 1;
           27                 }
           28                 hin->pos = (uchar*)pp;
           29                 n = pp - s;
           30                 if(c->hstop + n > &c->header[HBufSize])
           31                         return -1;
           32                 memmove(c->hstop, s, n);
           33                 c->hstop += n;
           34                 *c->hstop = '\0';
           35                 if(p != nil)
           36                         return 0;
           37                 if(hreadbuf(hin, hin->pos) == nil || hin->state == Hend)
           38                         return -1;
           39         }
           40 }