log.c

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#include <unistd.h>
#include "buffer.h"
#include "readwrite.h"
#include "stralloc.h"
#include "logaddr.h"
#include "now.h"
#include "fmt.h"
#include "open.h"
 
#define WHO "log"

 
 
static buffer bl;
static char logbuf[128];
static char num[FMT_ULONG];
static stralloc line = {0};
static stralloc fn = {0};
 
void logaddr(const char *dir,const char *event,const char *addr,const char *comment)
{
  char ch;
  int fd;
 
  if (!stralloc_copyb(&line,num,fmt_ulong(num,(unsigned long) now()))) return;
  if (!stralloc_cats(&line," ")) return;
  if (!stralloc_cats(&line,event)) return;
  if (!stralloc_cats(&line," ")) return;
  while ((ch = *addr++)) {
    if ((ch < 33) || (ch > 126)) ch = '?';
    if (!stralloc_append(&line,&ch)) return;
  }
  if (comment && *comment) {
    if (!stralloc_cats(&line," ")) return;
    while ((ch = *comment++)) {
      if (ch == '\t')
        ch = ' ';
      else 
        if ((ch < 32) || (ch > 126)) ch = '?';
      if (!stralloc_append(&line,&ch)) return;
    }
  }
  if (!stralloc_cats(&line,"\n")) return;
 
  if (!stralloc_copys(&fn,dir)) return;
  if (!stralloc_cats(&fn,"/Log")) return;
  if (!stralloc_0(&fn)) return;
 
  fd = open_append(fn.s);
  if (fd == -1) return;
  buffer_init(&bl,buffer_unixwrite,fd,logbuf,sizeof(logbuf));
  buffer_putflush(&bl,line.s,line.len);
  close(fd);
 
  return;
}