dedup-{format,sift}.c: Find ways to save space by making hardlinks.

[rsync-backup] / dedup-format.c

#include <errno.h>
#include <stdio.h>
#include <string.h>

#include <mLib/dstr.h>
#include <mLib/macros.h>
#include <mLib/quis.h>
#include <mLib/report.h>

struct field {
  const char *p;
  size_t n;
};

int main(int argc, char *argv[])
{
  int i, j;
  FILE *fp;
  dstr d = DSTR_INIT, dd = DSTR_INIT;
  const char *fn, *p, *q;
  size_t tagsz;
  struct field f[7];

  ego(argv[0]);

  for (i = 1; i < argc; i++) {
    fn = argv[i];
    if ((fp = fopen(fn, "r")) == 0)
      die(1, "fopen(%s): %s", fn, strerror(errno));
    q = strrchr(fn, '.'); tagsz = q ? q - fn : strlen(fn);

    for (;;) {
      DRESET(&d); DRESET(&dd);
      if (dstr_putline(&d, fp) == EOF) break;

      if (!d.len || d.buf[0] == '*' || d.buf[0] == '[') continue;

      for (p = d.buf, j = 0; j < N(f); j++) {
	while (*p == ' ') p++;
	if (!*p) break;
	f[j].p = p;
	if (j == N(f) - 1) {
	  f[j++].n = d.buf + d.len - p;
	  break;
	}
	while (*p && *p != ' ') p++;
	if (!*p) break;
	f[j].n = p - f[j].p;
      }
      if (j < N(f)) die(1, "failed to parse input");

      DPUTM(&dd, f[0].p, f[0].n); DPUTC(&dd, ' ');
      DPUTM(&dd, f[2].p, f[2].n); DPUTC(&dd, ' ');
      DPUTM(&dd, f[3].p, f[3].n); DPUTC(&dd, ' ');
      DPUTM(&dd, f[4].p, f[4].n); DPUTC(&dd, ' ');
      DPUTM(&dd, f[5].p, f[5].n); DPUTC(&dd, '|');
      DPUTM(&dd, fn, tagsz); DPUTC(&dd, '|');
      DPUTM(&dd, f[6].p, f[6].n); DPUTC(&dd, '\n');
      fwrite(dd.buf, 1, dd.len, stdout);
    }

    if (ferror(fp)) die(1, "ferror(%s)", fn);
    fclose(fp);
  }

  if (ferror(stdout) || fflush(stdout) || fclose(stdout))
    die(1, "stdout: %s", strerror(errno));

  return (0);
}