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#include <u.h>
#include <libc.h>
#include <bio.h>
#include "diff.h"
static int
itemcmp(const void *v1, const void *v2)
{
char *const*d1 = v1, *const*d2 = v2;
return strcmp(*d1, *d2);
}
static char **
scandir(char *name)
{
char **cp;
Dir *db;
int nitems;
int fd, n;
if ((fd = open(name, OREAD)) < 0){
panic(mflag ? 0 : 2, "can't open %s\n", name);
return nil;
}
cp = 0;
nitems = 0;
if((n = dirreadall(fd, &db)) > 0){
while (n--) {
cp = REALLOC(cp, char *, (nitems+1));
cp[nitems] = MALLOC(char, strlen((db+n)->name)+1);
strcpy(cp[nitems], (db+n)->name);
nitems++;
}
free(db);
}
cp = REALLOC(cp, char*, (nitems+1));
cp[nitems] = 0;
close(fd);
qsort((char *)cp, nitems, sizeof(char*), itemcmp);
return cp;
}
static int
isdotordotdot(char *p)
{
if (*p == '.') {
if (!p[1])
return 1;
if (p[1] == '.' && !p[2])
return 1;
}
return 0;
}
void
diffdir(char *f, char *t, int level)
{
char **df, **dt, **dirf, **dirt;
char *from, *to;
int res;
char fb[MAXPATHLEN+1], tb[MAXPATHLEN+1];
df = scandir(f);
dt = scandir(t);
dirf = df;
dirt = dt;
if(df == nil || dt == nil)
goto Out;
while (*df || *dt) {
from = *df;
to = *dt;
if (from && isdotordotdot(from)) {
df++;
continue;
}
if (to && isdotordotdot(to)) {
dt++;
continue;
}
if (!from)
res = 1;
else if (!to)
res = -1;
else
res = strcmp(from, to);
if (res < 0) {
if (mode == 0 || mode == 'n')
Bprint(&stdout, "Only in %s: %s\n", f, from);
df++;
continue;
}
if (res > 0) {
if (mode == 0 || mode == 'n')
Bprint(&stdout, "Only in %s: %s\n", t, to);
dt++;
continue;
}
if (mkpathname(fb, f, from))
continue;
if (mkpathname(tb, t, to))
continue;
diff(fb, tb, level+1);
df++; dt++;
}
Out:
for (df = dirf; df && *df; df++)
FREE(*df);
for (dt = dirt; dt && *dt; dt++)
FREE(*dt);
FREE(dirf);
FREE(dirt);
}
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