diff: reordering and renaming of variables
function old new delta diff_main 843 848 +5 get_recursive_dirlist 177 180 +3 add_to_dirlist 64 66 +2 change 329 326 -3 files_differ 182 176 -6 diffreg 1823 1808 -15 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/3 up/down: 10/-24) Total: -14 bytes
This commit is contained in:
Denis Vlasenko
parent
73132b9c12
commit
7fe0ebac5f
123
editors/diff.c
123
editors/diff.c
@ -95,54 +95,53 @@ struct context_vec {
|
||||
#define g_read_buf bb_common_bufsiz1
|
||||
|
||||
struct globals {
|
||||
USE_FEATURE_DIFF_DIR(char **dl;)
|
||||
bool anychange;
|
||||
smallint exit_status;
|
||||
int opt_U_context;
|
||||
size_t max_context; /* size of context_vec_start */
|
||||
USE_FEATURE_DIFF_DIR(int dl_count;)
|
||||
int status;
|
||||
/* This is the default number of lines of context. */
|
||||
int context;
|
||||
size_t max_context;
|
||||
char *start;
|
||||
USE_FEATURE_DIFF_DIR(char **dl;)
|
||||
char *opt_S_start;
|
||||
const char *label1;
|
||||
const char *label2;
|
||||
struct line *file[2];
|
||||
int *J; /* will be overlaid on class */
|
||||
int clen;
|
||||
int len[2];
|
||||
int pref, suff; /* length of prefix and suffix */
|
||||
int nlen[2];
|
||||
int slen[2];
|
||||
bool anychange;
|
||||
long *ixnew; /* will be overlaid on file[1] */
|
||||
long *ixold; /* will be overlaid on klist */
|
||||
struct cand *clist; /* merely a free storage pot for candidates */
|
||||
int clistlen; /* the length of clist */
|
||||
struct cand *clist; /* merely a free storage pot for candidates */
|
||||
long *ixnew; /* will be overlaid on nfile[1] */
|
||||
long *ixold; /* will be overlaid on klist */
|
||||
struct line *nfile[2];
|
||||
struct line *sfile[2]; /* shortened by pruning common prefix/suffix */
|
||||
struct context_vec *context_vec_start;
|
||||
struct context_vec *context_vec_end;
|
||||
struct context_vec *context_vec_ptr;
|
||||
struct stat stb1, stb2;
|
||||
char *tempname1, *tempname2;
|
||||
struct stat stb1, stb2;
|
||||
};
|
||||
#define G (*ptr_to_globals)
|
||||
#define dl (G.dl )
|
||||
#define dl_count (G.dl_count )
|
||||
#define context (G.context )
|
||||
#define anychange (G.anychange )
|
||||
#define exit_status (G.exit_status )
|
||||
#define opt_U_context (G.opt_U_context )
|
||||
#define max_context (G.max_context )
|
||||
#define status (G.status )
|
||||
#define start (G.start )
|
||||
#define dl_count (G.dl_count )
|
||||
#define dl (G.dl )
|
||||
#define opt_S_start (G.opt_S_start )
|
||||
#define label1 (G.label1 )
|
||||
#define label2 (G.label2 )
|
||||
#define file (G.file )
|
||||
#define J (G.J )
|
||||
#define clen (G.clen )
|
||||
#define len (G.len )
|
||||
#define pref (G.pref )
|
||||
#define suff (G.suff )
|
||||
#define nlen (G.nlen )
|
||||
#define slen (G.slen )
|
||||
#define anychange (G.anychange )
|
||||
#define clistlen (G.clistlen )
|
||||
#define clist (G.clist )
|
||||
#define ixnew (G.ixnew )
|
||||
#define ixold (G.ixold )
|
||||
#define clist (G.clist )
|
||||
#define clistlen (G.clistlen )
|
||||
#define nfile (G.nfile )
|
||||
#define sfile (G.sfile )
|
||||
#define context_vec_start (G.context_vec_start )
|
||||
#define context_vec_end (G.context_vec_end )
|
||||
@ -153,7 +152,7 @@ struct globals {
|
||||
#define tempname2 (G.tempname2 )
|
||||
#define INIT_G() do { \
|
||||
SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
|
||||
context = 3; \
|
||||
opt_U_context = 3; \
|
||||
max_context = 64; \
|
||||
} while (0)
|
||||
|
||||
@ -353,8 +352,8 @@ static void prepare(int i, FILE *fp /*, off_t filesize*/)
|
||||
}
|
||||
p[++j].value = h;
|
||||
}
|
||||
len[i] = j;
|
||||
file[i] = p;
|
||||
nlen[i] = j;
|
||||
nfile[i] = p;
|
||||
}
|
||||
|
||||
|
||||
@ -362,16 +361,16 @@ static void prune(void)
|
||||
{
|
||||
int i, j;
|
||||
|
||||
for (pref = 0; pref < len[0] && pref < len[1] &&
|
||||
file[0][pref + 1].value == file[1][pref + 1].value; pref++)
|
||||
for (pref = 0; pref < nlen[0] && pref < nlen[1] &&
|
||||
nfile[0][pref + 1].value == nfile[1][pref + 1].value; pref++)
|
||||
continue;
|
||||
for (suff = 0; suff < len[0] - pref && suff < len[1] - pref &&
|
||||
file[0][len[0] - suff].value == file[1][len[1] - suff].value;
|
||||
for (suff = 0; suff < nlen[0] - pref && suff < nlen[1] - pref &&
|
||||
nfile[0][nlen[0] - suff].value == nfile[1][nlen[1] - suff].value;
|
||||
suff++)
|
||||
continue;
|
||||
for (j = 0; j < 2; j++) {
|
||||
sfile[j] = file[j] + pref;
|
||||
slen[j] = len[j] - pref - suff;
|
||||
sfile[j] = nfile[j] + pref;
|
||||
slen[j] = nlen[j] - pref - suff;
|
||||
for (i = 0; i <= slen[j]; i++)
|
||||
sfile[j][i].serial = i;
|
||||
}
|
||||
@ -516,8 +515,8 @@ static void unravel(int p)
|
||||
struct cand *q;
|
||||
int i;
|
||||
|
||||
for (i = 0; i <= len[0]; i++)
|
||||
J[i] = i <= pref ? i : i > len[0] - suff ? i + len[1] - len[0] : 0;
|
||||
for (i = 0; i <= nlen[0]; i++)
|
||||
J[i] = i <= pref ? i : i > nlen[0] - suff ? i + nlen[1] - nlen[0] : 0;
|
||||
for (q = clist + p; q->y != 0; q = clist + q->pred)
|
||||
J[q->x + pref] = q->y + pref;
|
||||
}
|
||||
@ -563,7 +562,7 @@ static NOINLINE void check(FILE *f1, FILE *f2)
|
||||
ixold[0] = ixnew[0] = 0;
|
||||
jackpot = 0;
|
||||
ctold = ctnew = 0;
|
||||
for (i = 1; i <= len[0]; i++) {
|
||||
for (i = 1; i <= nlen[0]; i++) {
|
||||
if (J[i] == 0) {
|
||||
ixold[i] = ctold += skipline(f1);
|
||||
continue;
|
||||
@ -645,7 +644,7 @@ static NOINLINE void check(FILE *f1, FILE *f2)
|
||||
ixnew[j] = ctnew;
|
||||
j++;
|
||||
}
|
||||
for (; j <= len[1]; j++)
|
||||
for (; j <= nlen[1]; j++)
|
||||
ixnew[j] = ctnew += skipline(f2);
|
||||
}
|
||||
|
||||
@ -764,10 +763,10 @@ static void dump_unified_vec(FILE *f1, FILE *f2)
|
||||
return;
|
||||
|
||||
b = d = 0; /* gcc */
|
||||
lowa = MAX(1, cvp->a - context);
|
||||
upb = MIN(len[0], context_vec_ptr->b + context);
|
||||
lowc = MAX(1, cvp->c - context);
|
||||
upd = MIN(len[1], context_vec_ptr->d + context);
|
||||
lowa = MAX(1, cvp->a - opt_U_context);
|
||||
upb = MIN(nlen[0], context_vec_ptr->b + opt_U_context);
|
||||
lowc = MAX(1, cvp->c - opt_U_context);
|
||||
upd = MIN(nlen[1], context_vec_ptr->d + opt_U_context);
|
||||
|
||||
printf("@@ -");
|
||||
uni_range(lowa, upb);
|
||||
@ -875,8 +874,8 @@ static void change(char *file1, FILE *f1, char *file2, FILE *f2,
|
||||
* Print the context/unidiff header first time through.
|
||||
*/
|
||||
print_header(file1, file2);
|
||||
} else if (a > context_vec_ptr->b + (2 * context) + 1
|
||||
&& c > context_vec_ptr->d + (2 * context) + 1
|
||||
} else if (a > context_vec_ptr->b + (2 * opt_U_context) + 1
|
||||
&& c > context_vec_ptr->d + (2 * opt_U_context) + 1
|
||||
) {
|
||||
/*
|
||||
* If this change is more than 'context' lines from the
|
||||
@ -902,9 +901,9 @@ static void output(char *file1, FILE *f1, char *file2, FILE *f2)
|
||||
|
||||
rewind(f1);
|
||||
rewind(f2);
|
||||
m = len[0];
|
||||
m = nlen[0];
|
||||
J[0] = 0;
|
||||
J[m + 1] = len[1] + 1;
|
||||
J[m + 1] = nlen[1] + 1;
|
||||
for (i0 = 1; i0 <= m; i0 = i1 + 1) {
|
||||
while (i0 <= m && J[i0] == J[i0 - 1] + 1)
|
||||
i0++;
|
||||
@ -919,7 +918,7 @@ static void output(char *file1, FILE *f1, char *file2, FILE *f2)
|
||||
}
|
||||
if (m == 0) {
|
||||
// change() seeks!
|
||||
change(file1, f1, file2, f2, 1, 0, 1, len[1]);
|
||||
change(file1, f1, file2, f2, 1, 0, 1, nlen[1]);
|
||||
}
|
||||
if (anychange != 0 && !(option_mask32 & FLAG_q)) {
|
||||
// dump_unified_vec() seeks!
|
||||
@ -993,9 +992,9 @@ static void output(char *file1, FILE *f1, char *file2, FILE *f2)
|
||||
* are not both DIRectories. */
|
||||
static unsigned diffreg(char *file1, char *file2, int flags)
|
||||
{
|
||||
int *member; /* will be overlaid on file[1] */
|
||||
int *class; /* will be overlaid on file[0] */
|
||||
int *klist; /* will be overlaid on file[0] after class */
|
||||
int *member; /* will be overlaid on nfile[1] */
|
||||
int *class; /* will be overlaid on nfile[0] */
|
||||
int *klist; /* will be overlaid on nfile[0] after class */
|
||||
FILE *f1;
|
||||
FILE *f2;
|
||||
unsigned rval;
|
||||
@ -1025,13 +1024,13 @@ static unsigned diffreg(char *file1, char *file2, int flags)
|
||||
i = files_differ(f1, f2, flags);
|
||||
if (i != 1) { /* not different? */
|
||||
if (i != 0) /* error? */
|
||||
status |= 2;
|
||||
exit_status |= 2;
|
||||
goto closem;
|
||||
}
|
||||
|
||||
if (!asciifile(f1) || !asciifile(f2)) {
|
||||
rval = D_BINARY;
|
||||
status |= 1;
|
||||
exit_status |= 1;
|
||||
goto closem;
|
||||
}
|
||||
|
||||
@ -1042,11 +1041,11 @@ static unsigned diffreg(char *file1, char *file2, int flags)
|
||||
sort(sfile[0], slen[0]);
|
||||
sort(sfile[1], slen[1]);
|
||||
|
||||
member = (int *) file[1];
|
||||
member = (int *) nfile[1];
|
||||
equiv(sfile[0], slen[0], sfile[1], slen[1], member);
|
||||
member = xrealloc(member, (slen[1] + 2) * sizeof(int));
|
||||
|
||||
class = (int *) file[0];
|
||||
class = (int *) nfile[0];
|
||||
unsort(sfile[0], slen[0], class);
|
||||
class = xrealloc(class, (slen[0] + 2) * sizeof(int));
|
||||
|
||||
@ -1058,13 +1057,13 @@ static unsigned diffreg(char *file1, char *file2, int flags)
|
||||
free(member);
|
||||
free(class);
|
||||
|
||||
J = xrealloc(J, (len[0] + 2) * sizeof(int));
|
||||
J = xrealloc(J, (nlen[0] + 2) * sizeof(int));
|
||||
unravel(klist[i]);
|
||||
free(clist);
|
||||
free(klist);
|
||||
|
||||
ixold = xrealloc(ixold, (len[0] + 2) * sizeof(long));
|
||||
ixnew = xrealloc(ixnew, (len[1] + 2) * sizeof(long));
|
||||
ixold = xrealloc(ixold, (nlen[0] + 2) * sizeof(long));
|
||||
ixnew = xrealloc(ixnew, (nlen[1] + 2) * sizeof(long));
|
||||
// Rewind inside!
|
||||
check(f1, f2);
|
||||
// Rewind inside!
|
||||
@ -1072,7 +1071,7 @@ static unsigned diffreg(char *file1, char *file2, int flags)
|
||||
|
||||
closem:
|
||||
if (anychange) {
|
||||
status |= 1;
|
||||
exit_status |= 1;
|
||||
if (rval == D_SAME)
|
||||
rval = D_DIFFER;
|
||||
}
|
||||
@ -1216,10 +1215,10 @@ static void diffdir(char *p1, char *p2)
|
||||
dirlist2 = get_recursive_dirlist(p2);
|
||||
|
||||
/* If -S was set, find the starting point. */
|
||||
if (start) {
|
||||
while (*dirlist1 != NULL && strcmp(*dirlist1, start) < 0)
|
||||
if (opt_S_start) {
|
||||
while (*dirlist1 != NULL && strcmp(*dirlist1, opt_S_start) < 0)
|
||||
dirlist1++;
|
||||
while (*dirlist2 != NULL && strcmp(*dirlist2, start) < 0)
|
||||
while (*dirlist2 != NULL && strcmp(*dirlist2, opt_S_start) < 0)
|
||||
dirlist2++;
|
||||
if ((*dirlist1 == NULL) || (*dirlist2 == NULL))
|
||||
bb_error_msg(bb_msg_invalid_arg, "NULL", "-S");
|
||||
@ -1268,7 +1267,7 @@ int diff_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
||||
opt_complementary = "=2:L::U+";
|
||||
getopt32(argv, "abdiL:NqrsS:tTU:wu"
|
||||
"p" /* ignored (for compatibility) */,
|
||||
&L_arg, &start, &context);
|
||||
&L_arg, &opt_S_start, &opt_U_context);
|
||||
/*argc -= optind;*/
|
||||
argv += optind;
|
||||
while (L_arg) {
|
||||
@ -1307,7 +1306,7 @@ int diff_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
||||
if (S_ISDIR(stb1.st_mode) && S_ISDIR(stb2.st_mode)) {
|
||||
#if ENABLE_FEATURE_DIFF_DIR
|
||||
diffdir(f1, f2);
|
||||
return status;
|
||||
return exit_status;
|
||||
#else
|
||||
bb_error_msg_and_die("no support for directory comparison");
|
||||
#endif
|
||||
@ -1330,5 +1329,5 @@ int diff_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
||||
* they are not both DIRestories */
|
||||
print_status((gotstdin > 1 ? D_SAME : diffreg(f1, f2, 0)),
|
||||
f1, f2 /*, NULL*/);
|
||||
return status;
|
||||
return exit_status;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user