/*
* Output flags
*/
-#define D_HEADER 1 /* Print a header/footer between files */
-#define D_EMPTY1 2 /* Treat first file as empty (/dev/null) */
-#define D_EMPTY2 4 /* Treat second file as empty (/dev/null) */
+#define D_HEADER 1 /* Print a header/footer between files */
+#define D_EMPTY1 2 /* Treat first file as empty (/dev/null) */
+#define D_EMPTY2 4 /* Treat second file as empty (/dev/null) */
/*
* Status values for print_status() and diffreg() return values
/* Command line options */
static unsigned long cmd_flags;
+
#define FLAG_a (1<<0)
#define FLAG_b (1<<1)
#define FLAG_d (1<<2)
int dl_count = 0;
struct cand {
- int x;
- int y;
- int pred;
+ int x;
+ int y;
+ int pred;
};
struct line {
- int serial;
- int value;
+ int serial;
+ int value;
} *file[2];
/*
* understand the highly mnemonic field names)
*/
struct context_vec {
- int a; /* start line in old file */
- int b; /* end line in old file */
- int c; /* start line in new file */
- int d; /* end line in new file */
+ int a; /* start line in old file */
+ int b; /* end line in old file */
+ int c; /* start line in new file */
+ int d; /* end line in new file */
};
-static int *J; /* will be overlaid on class */
-static int *class; /* will be overlaid on file[0] */
-static int *klist; /* will be overlaid on file[0] after class */
-static int *member; /* will be overlaid on file[1] */
-static int clen;
-static int len[2];
-static int pref, suff; /* length of prefix and suffix */
-static int slen[2];
-static int anychange;
-static long *ixnew; /* will be overlaid on file[1] */
-static long *ixold; /* will be overlaid on klist */
-static struct cand *clist; /* merely a free storage pot for candidates */
-static int clistlen; /* the length of clist */
-static struct line *sfile[2]; /* shortened by pruning common prefix/suffix */
+static int *J; /* will be overlaid on class */
+static int *class; /* will be overlaid on file[0] */
+static int *klist; /* will be overlaid on file[0] after class */
+static int *member; /* will be overlaid on file[1] */
+static int clen;
+static int len[2];
+static int pref, suff; /* length of prefix and suffix */
+static int slen[2];
+static int anychange;
+static long *ixnew; /* will be overlaid on file[1] */
+static long *ixold; /* will be overlaid on klist */
+static struct cand *clist; /* merely a free storage pot for candidates */
+static int clistlen; /* the length of clist */
+static struct line *sfile[2]; /* shortened by pruning common prefix/suffix */
static struct context_vec *context_vec_start;
static struct context_vec *context_vec_end;
static struct context_vec *context_vec_ptr;
static void print_only(const char *path, size_t dirlen, const char *entry)
{
- if (dirlen > 1)
- dirlen--;
- printf("Only in %.*s: %s\n", (int)dirlen, path, entry);
+ if (dirlen > 1)
+ dirlen--;
+ printf("Only in %.*s: %s\n", (int) dirlen, path, entry);
}
static void print_status(int val, char *path1, char *path2, char *entry)
{
- const char * const _entry = entry ? entry : "";
+ const char *const _entry = entry ? entry : "";
char *_path1 = entry ? concat_path_file(path1, _entry) : path1;
char *_path2 = entry ? concat_path_file(path2, _entry) : path2;
- switch (val) {
- case D_ONLY:
- print_only(path1, strlen(path1), entry);
- break;
- case D_COMMON:
- printf("Common subdirectories: %s and %s\n", _path1, _path2);
- break;
- case D_BINARY:
- printf("Binary files %s and %s differ\n", _path1, _path2);
- break;
- case D_DIFFER:
- if (cmd_flags & FLAG_q)
- printf("Files %s and %s differ\n", _path1, _path2);
- break;
- case D_SAME:
- if (cmd_flags & FLAG_s)
- printf("Files %s and %s are identical\n", _path1, _path2);
- break;
- case D_MISMATCH1:
- printf("File %s is a directory while file %s is a regular file\n",
- _path1, _path2);
- break;
- case D_MISMATCH2:
- printf("File %s is a regular file while file %s is a directory\n",
- _path1, _path2);
- break;
- case D_SKIPPED1:
- printf("File %s is not a regular file or directory and was skipped\n",
- _path1);
- break;
- case D_SKIPPED2:
- printf("File %s is not a regular file or directory and was skipped\n",
- _path2);
- break;
- }
- if (entry) {
- free(_path1);
- free(_path2);
- }
+
+ switch (val) {
+ case D_ONLY:
+ print_only(path1, strlen(path1), entry);
+ break;
+ case D_COMMON:
+ printf("Common subdirectories: %s and %s\n", _path1, _path2);
+ break;
+ case D_BINARY:
+ printf("Binary files %s and %s differ\n", _path1, _path2);
+ break;
+ case D_DIFFER:
+ if (cmd_flags & FLAG_q)
+ printf("Files %s and %s differ\n", _path1, _path2);
+ break;
+ case D_SAME:
+ if (cmd_flags & FLAG_s)
+ printf("Files %s and %s are identical\n", _path1, _path2);
+ break;
+ case D_MISMATCH1:
+ printf("File %s is a directory while file %s is a regular file\n",
+ _path1, _path2);
+ break;
+ case D_MISMATCH2:
+ printf("File %s is a regular file while file %s is a directory\n",
+ _path1, _path2);
+ break;
+ case D_SKIPPED1:
+ printf("File %s is not a regular file or directory and was skipped\n",
+ _path1);
+ break;
+ case D_SKIPPED2:
+ printf("File %s is not a regular file or directory and was skipped\n",
+ _path2);
+ break;
+ }
+ if (entry) {
+ free(_path1);
+ free(_path2);
+ }
}
/*
* Hash function taken from Robert Sedgewick, Algorithms in C, 3d ed., p 578.
*/
-static int readhash(FILE *f)
+static int readhash(FILE * f)
{
- int i, t, space;
- int sum;
-
- sum = 1;
- space = 0;
- if (!(cmd_flags & FLAG_b) && !(cmd_flags & FLAG_w)) {
- if (FLAG_i)
- for (i = 0; (t = getc(f)) != '\n'; i++) {
- if (t == EOF) {
- if (i == 0)
- return (0);
- break;
- }
- sum = sum * 127 + t;
- }
- else
- for (i = 0; (t = getc(f)) != '\n'; i++) {
- if (t == EOF) {
- if (i == 0)
- return (0);
- break;
- }
- sum = sum * 127 + t;
- }
- } else {
- for (i = 0;;) {
- switch (t = getc(f)) {
- case '\t':
- case '\r':
- case '\v':
- case '\f':
- case ' ':
- space++;
- continue;
- default:
- if (space && !(cmd_flags & FLAG_w)) {
- i++;
- space = 0;
- }
- sum = sum * 127 + t;
- i++;
- continue;
- case EOF:
- if (i == 0)
- return (0);
- /* FALLTHROUGH */
- case '\n':
- break;
- }
- break;
- }
- }
- /*
- * There is a remote possibility that we end up with a zero sum.
- * Zero is used as an EOF marker, so return 1 instead.
- */
- return (sum == 0 ? 1 : sum);
+ int i, t, space;
+ int sum;
+
+ sum = 1;
+ space = 0;
+ if (!(cmd_flags & FLAG_b) && !(cmd_flags & FLAG_w)) {
+ if (FLAG_i)
+ for (i = 0; (t = getc(f)) != '\n'; i++) {
+ if (t == EOF) {
+ if (i == 0)
+ return (0);
+ break;
+ }
+ sum = sum * 127 + t;
+ } else
+ for (i = 0; (t = getc(f)) != '\n'; i++) {
+ if (t == EOF) {
+ if (i == 0)
+ return (0);
+ break;
+ }
+ sum = sum * 127 + t;
+ }
+ } else {
+ for (i = 0;;) {
+ switch (t = getc(f)) {
+ case '\t':
+ case '\r':
+ case '\v':
+ case '\f':
+ case ' ':
+ space++;
+ continue;
+ default:
+ if (space && !(cmd_flags & FLAG_w)) {
+ i++;
+ space = 0;
+ }
+ sum = sum * 127 + t;
+ i++;
+ continue;
+ case EOF:
+ if (i == 0)
+ return (0);
+ /* FALLTHROUGH */
+ case '\n':
+ break;
+ }
+ break;
+ }
+ }
+ /*
+ * There is a remote possibility that we end up with a zero sum.
+ * Zero is used as an EOF marker, so return 1 instead.
+ */
+ return (sum == 0 ? 1 : sum);
}
* Check to see if the given files differ.
* Returns 0 if they are the same, 1 if different, and -1 on error.
*/
-static int files_differ(FILE *f1, FILE *f2, int flags)
+static int files_differ(FILE * f1, FILE * f2, int flags)
{
- char buf1[BUFSIZ], buf2[BUFSIZ];
- size_t i, j;
-
- if ((flags & (D_EMPTY1|D_EMPTY2)) || stb1.st_size != stb2.st_size ||
- (stb1.st_mode & S_IFMT) != (stb2.st_mode & S_IFMT))
- return (1);
- while(1) {
- i = fread(buf1, 1, sizeof(buf1), f1);
- j = fread(buf2, 1, sizeof(buf2), f2);
- if (i != j)
- return (1);
- if (i == 0 && j == 0) {
- if (ferror(f1) || ferror(f2))
- return (1);
- return (0);
- }
- if (memcmp(buf1, buf2, i) != 0)
- return (1);
- }
+ char buf1[BUFSIZ], buf2[BUFSIZ];
+ size_t i, j;
+
+ if ((flags & (D_EMPTY1 | D_EMPTY2)) || stb1.st_size != stb2.st_size ||
+ (stb1.st_mode & S_IFMT) != (stb2.st_mode & S_IFMT))
+ return (1);
+ while (1) {
+ i = fread(buf1, 1, sizeof(buf1), f1);
+ j = fread(buf2, 1, sizeof(buf2), f2);
+ if (i != j)
+ return (1);
+ if (i == 0 && j == 0) {
+ if (ferror(f1) || ferror(f2))
+ return (1);
+ return (0);
+ }
+ if (memcmp(buf1, buf2, i) != 0)
+ return (1);
+ }
}
-static void prepare(int i, FILE *fd, off_t filesize)
+static void prepare(int i, FILE * fd, off_t filesize)
{
- struct line *p;
- int h;
- size_t j, sz;
-
- rewind(fd);
-
- sz = (filesize <= FSIZE_MAX ? filesize : FSIZE_MAX) / 25;
- if (sz < 100)
- sz = 100;
-
- p = xmalloc((sz + 3) * sizeof(struct line));
- for (j = 0; (h = readhash(fd));) {
- if (j == sz) {
- sz = sz * 3 / 2;
- p = xrealloc(p, (sz + 3) * sizeof(struct line));
- }
- p[++j].value = h;
- }
- len[i] = j;
- file[i] = p;
+ struct line *p;
+ int h;
+ size_t j, sz;
+
+ rewind(fd);
+
+ sz = (filesize <= FSIZE_MAX ? filesize : FSIZE_MAX) / 25;
+ if (sz < 100)
+ sz = 100;
+
+ p = xmalloc((sz + 3) * sizeof(struct line));
+ for (j = 0; (h = readhash(fd));) {
+ if (j == sz) {
+ sz = sz * 3 / 2;
+ p = xrealloc(p, (sz + 3) * sizeof(struct line));
+ }
+ p[++j].value = h;
+ }
+ len[i] = j;
+ file[i] = p;
}
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 (suff = 0; suff < len[0] - pref && suff < len[1] - pref &&
- file[0][len[0] - suff].value == file[1][len[1] - suff].value;
- suff++)
- ;
- for (j = 0; j < 2; j++) {
- sfile[j] = file[j] + pref;
- slen[j] = len[j] - pref - suff;
- for (i = 0; i <= slen[j]; i++)
- sfile[j][i].serial = i;
- }
+ int i, j;
+
+ for (pref = 0; pref < len[0] && pref < len[1] &&
+ file[0][pref + 1].value == file[1][pref + 1].value; pref++);
+ for (suff = 0; suff < len[0] - pref && suff < len[1] - pref &&
+ file[0][len[0] - suff].value == file[1][len[1] - suff].value;
+ suff++);
+ for (j = 0; j < 2; j++) {
+ sfile[j] = file[j] + pref;
+ slen[j] = len[j] - pref - suff;
+ for (i = 0; i <= slen[j]; i++)
+ sfile[j][i].serial = i;
+ }
}
static void equiv(struct line *a, int n, struct line *b, int m, int *c)
{
- int i, j;
-
- i = j = 1;
- while (i <= n && j <= m) {
- if (a[i].value < b[j].value)
- a[i++].value = 0;
- else if (a[i].value == b[j].value)
- a[i++].value = j;
- else
- j++;
- }
- while (i <= n)
- a[i++].value = 0;
- b[m + 1].value = 0;
- j = 0;
- while (++j <= m) {
- c[j] = -b[j].serial;
- while (b[j + 1].value == b[j].value) {
- j++;
- c[j] = b[j].serial;
- }
- }
- c[j] = -1;
+ int i, j;
+
+ i = j = 1;
+ while (i <= n && j <= m) {
+ if (a[i].value < b[j].value)
+ a[i++].value = 0;
+ else if (a[i].value == b[j].value)
+ a[i++].value = j;
+ else
+ j++;
+ }
+ while (i <= n)
+ a[i++].value = 0;
+ b[m + 1].value = 0;
+ j = 0;
+ while (++j <= m) {
+ c[j] = -b[j].serial;
+ while (b[j + 1].value == b[j].value) {
+ j++;
+ c[j] = b[j].serial;
+ }
+ }
+ c[j] = -1;
}
-static int isqrt(int n) {
+static int isqrt(int n)
+{
int y, x = 1;
- if (n == 0) return(0);
+
+ if (n == 0)
+ return (0);
do {
y = x;
static int newcand(int x, int y, int pred)
{
- struct cand *q;
-
- if (clen == clistlen) {
- clistlen = clistlen * 11 / 10;
- clist = xrealloc(clist, clistlen * sizeof(struct cand));
- }
- q = clist + clen;
- q->x = x;
- q->y = y;
- q->pred = pred;
- return (clen++);
+ struct cand *q;
+
+ if (clen == clistlen) {
+ clistlen = clistlen * 11 / 10;
+ clist = xrealloc(clist, clistlen * sizeof(struct cand));
+ }
+ q = clist + clen;
+ q->x = x;
+ q->y = y;
+ q->pred = pred;
+ return (clen++);
}
static int search(int *c, int k, int y)
{
- int i, j, l, t;
-
- if (clist[c[k]].y < y) /* quick look for typical case */
- return (k + 1);
- i = 0;
- j = k + 1;
- while (1) {
- l = i + j;
- if ((l >>= 1) <= i)
- break;
- t = clist[c[l]].y;
- if (t > y)
- j = l;
- else if (t < y)
- i = l;
- else
- return (l);
- }
- return (l + 1);
+ int i, j, l, t;
+
+ if (clist[c[k]].y < y) /* quick look for typical case */
+ return (k + 1);
+ i = 0;
+ j = k + 1;
+ while (1) {
+ l = i + j;
+ if ((l >>= 1) <= i)
+ break;
+ t = clist[c[l]].y;
+ if (t > y)
+ j = l;
+ else if (t < y)
+ i = l;
+ else
+ return (l);
+ }
+ return (l + 1);
}
static int stone(int *a, int n, int *b, int *c)
{
- int i, k, y, j, l;
- int oldc, tc, oldl;
- unsigned int numtries;
+ int i, k, y, j, l;
+ int oldc, tc, oldl;
+ unsigned int numtries;
+
#if ENABLE_FEATURE_DIFF_MINIMAL
- const unsigned int bound = (cmd_flags & FLAG_d) ? UINT_MAX : MAX(256, isqrt(n));
+ const unsigned int bound =
+ (cmd_flags & FLAG_d) ? UINT_MAX : MAX(256, isqrt(n));
#else
- const unsigned int bound = MAX(256, isqrt(n));
+ const unsigned int bound = MAX(256, isqrt(n));
#endif
- k = 0;
- c[0] = newcand(0, 0, 0);
- for (i = 1; i <= n; i++) {
- j = a[i];
- if (j == 0)
- continue;
- y = -b[j];
- oldl = 0;
- oldc = c[0];
- numtries = 0;
- do {
- if (y <= clist[oldc].y)
- continue;
- l = search(c, k, y);
- if (l != oldl + 1)
- oldc = c[l - 1];
- if (l <= k) {
- if (clist[c[l]].y <= y)
- continue;
- tc = c[l];
- c[l] = newcand(i, y, oldc);
- oldc = tc;
- oldl = l;
- numtries++;
- } else {
- c[l] = newcand(i, y, oldc);
- k++;
- break;
- }
- } while ((y = b[++j]) > 0 && numtries < bound);
- }
- return (k);
+ k = 0;
+ c[0] = newcand(0, 0, 0);
+ for (i = 1; i <= n; i++) {
+ j = a[i];
+ if (j == 0)
+ continue;
+ y = -b[j];
+ oldl = 0;
+ oldc = c[0];
+ numtries = 0;
+ do {
+ if (y <= clist[oldc].y)
+ continue;
+ l = search(c, k, y);
+ if (l != oldl + 1)
+ oldc = c[l - 1];
+ if (l <= k) {
+ if (clist[c[l]].y <= y)
+ continue;
+ tc = c[l];
+ c[l] = newcand(i, y, oldc);
+ oldc = tc;
+ oldl = l;
+ numtries++;
+ } else {
+ c[l] = newcand(i, y, oldc);
+ k++;
+ break;
+ }
+ } while ((y = b[++j]) > 0 && numtries < bound);
+ }
+ return (k);
}
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 (q = clist + p; q->y != 0; q = clist + q->pred)
- J[q->x + pref] = q->y + pref;
+ 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 (q = clist + p; q->y != 0; q = clist + q->pred)
+ J[q->x + pref] = q->y + pref;
}
static void unsort(struct line *f, int l, int *b)
{
- int *a, i;
-
- a = xmalloc((l + 1) * sizeof(int));
- for (i = 1; i <= l; i++)
- a[f[i].serial] = f[i].value;
- for (i = 1; i <= l; i++)
- b[i] = a[i];
- free(a);
+ int *a, i;
+
+ a = xmalloc((l + 1) * sizeof(int));
+ for (i = 1; i <= l; i++)
+ a[f[i].serial] = f[i].value;
+ for (i = 1; i <= l; i++)
+ b[i] = a[i];
+ free(a);
}
-static int skipline(FILE *f)
+static int skipline(FILE * f)
{
- int i, c;
+ int i, c;
- for (i = 1; (c = getc(f)) != '\n' && c != EOF; i++)
- continue;
- return (i);
+ for (i = 1; (c = getc(f)) != '\n' && c != EOF; i++)
+ continue;
+ return (i);
}
* to confounding by hashing (which result in "jackpot")
* 2. collect random access indexes to the two files
*/
-static void check(FILE *f1, FILE *f2)
+static void check(FILE * f1, FILE * f2)
{
- int i, j, jackpot, c, d;
- long ctold, ctnew;
-
- rewind(f1);
- rewind(f2);
- j = 1;
- ixold[0] = ixnew[0] = 0;
- jackpot = 0;
- ctold = ctnew = 0;
- for (i = 1; i <= len[0]; i++) {
- if (J[i] == 0) {
- ixold[i] = ctold += skipline(f1);
- continue;
- }
- while (j < J[i]) {
- ixnew[j] = ctnew += skipline(f2);
- j++;
- }
- if ((cmd_flags & FLAG_b) || (cmd_flags & FLAG_w) || (cmd_flags & FLAG_i)) {
- while (1) {
- c = getc(f1);
- d = getc(f2);
- /*
- * GNU diff ignores a missing newline
- * in one file if bflag || wflag.
- */
- if (((cmd_flags & FLAG_b) || (cmd_flags & FLAG_w)) &&
- ((c == EOF && d == '\n') ||
- (c == '\n' && d == EOF))) {
- break;
- }
- ctold++;
- ctnew++;
- if ((cmd_flags & FLAG_b) && isspace(c) && isspace(d)) {
- do {
- if (c == '\n')
- break;
- ctold++;
- } while (isspace(c = getc(f1)));
- do {
- if (d == '\n')
- break;
- ctnew++;
- } while (isspace(d = getc(f2)));
- } else if (cmd_flags & FLAG_w) {
- while (isspace(c) && c != '\n') {
- c = getc(f1);
- ctold++;
- }
- while (isspace(d) && d != '\n') {
- d = getc(f2);
- ctnew++;
- }
- }
- if (c != d) {
- jackpot++;
- J[i] = 0;
- if (c != '\n' && c != EOF)
- ctold += skipline(f1);
- if (d != '\n' && c != EOF)
- ctnew += skipline(f2);
- break;
- }
- if (c == '\n' || c == EOF)
- break;
- }
- } else {
- while (1) {
- ctold++;
- ctnew++;
- if ((c = getc(f1)) != (d = getc(f2))) {
- J[i] = 0;
- if (c != '\n' && c != EOF)
- ctold += skipline(f1);
- if (d != '\n' && c != EOF)
- ctnew += skipline(f2);
- break;
- }
- if (c == '\n' || c == EOF)
- break;
- }
- }
- ixold[i] = ctold;
- ixnew[j] = ctnew;
- j++;
- }
- for (; j <= len[1]; j++)
- ixnew[j] = ctnew += skipline(f2);
+ int i, j, jackpot, c, d;
+ long ctold, ctnew;
+
+ rewind(f1);
+ rewind(f2);
+ j = 1;
+ ixold[0] = ixnew[0] = 0;
+ jackpot = 0;
+ ctold = ctnew = 0;
+ for (i = 1; i <= len[0]; i++) {
+ if (J[i] == 0) {
+ ixold[i] = ctold += skipline(f1);
+ continue;
+ }
+ while (j < J[i]) {
+ ixnew[j] = ctnew += skipline(f2);
+ j++;
+ }
+ if ((cmd_flags & FLAG_b) || (cmd_flags & FLAG_w)
+ || (cmd_flags & FLAG_i)) {
+ while (1) {
+ c = getc(f1);
+ d = getc(f2);
+ /*
+ * GNU diff ignores a missing newline
+ * in one file if bflag || wflag.
+ */
+ if (((cmd_flags & FLAG_b) || (cmd_flags & FLAG_w)) &&
+ ((c == EOF && d == '\n') || (c == '\n' && d == EOF))) {
+ break;
+ }
+ ctold++;
+ ctnew++;
+ if ((cmd_flags & FLAG_b) && isspace(c) && isspace(d)) {
+ do {
+ if (c == '\n')
+ break;
+ ctold++;
+ } while (isspace(c = getc(f1)));
+ do {
+ if (d == '\n')
+ break;
+ ctnew++;
+ } while (isspace(d = getc(f2)));
+ } else if (cmd_flags & FLAG_w) {
+ while (isspace(c) && c != '\n') {
+ c = getc(f1);
+ ctold++;
+ }
+ while (isspace(d) && d != '\n') {
+ d = getc(f2);
+ ctnew++;
+ }
+ }
+ if (c != d) {
+ jackpot++;
+ J[i] = 0;
+ if (c != '\n' && c != EOF)
+ ctold += skipline(f1);
+ if (d != '\n' && c != EOF)
+ ctnew += skipline(f2);
+ break;
+ }
+ if (c == '\n' || c == EOF)
+ break;
+ }
+ } else {
+ while (1) {
+ ctold++;
+ ctnew++;
+ if ((c = getc(f1)) != (d = getc(f2))) {
+ J[i] = 0;
+ if (c != '\n' && c != EOF)
+ ctold += skipline(f1);
+ if (d != '\n' && c != EOF)
+ ctnew += skipline(f2);
+ break;
+ }
+ if (c == '\n' || c == EOF)
+ break;
+ }
+ }
+ ixold[i] = ctold;
+ ixnew[j] = ctnew;
+ j++;
+ }
+ for (; j <= len[1]; j++)
+ ixnew[j] = ctnew += skipline(f2);
}
/* shellsort CACM #201 */
static void sort(struct line *a, int n)
{
- struct line *ai, *aim, w;
- int j, m = 0, k;
-
- if (n == 0)
- return;
- for (j = 1; j <= n; j *= 2)
- m = 2 * j - 1;
- for (m /= 2; m != 0; m /= 2) {
- k = n - m;
- for (j = 1; j <= k; j++) {
- for (ai = &a[j]; ai > a; ai -= m) {
- aim = &ai[m];
- if (aim < ai)
- break; /* wraparound */
- if (aim->value > ai[0].value ||
- (aim->value == ai[0].value &&
- aim->serial > ai[0].serial))
- break;
- w.value = ai[0].value;
- ai[0].value = aim->value;
- aim->value = w.value;
- w.serial = ai[0].serial;
- ai[0].serial = aim->serial;
- aim->serial = w.serial;
- }
- }
- }
+ struct line *ai, *aim, w;
+ int j, m = 0, k;
+
+ if (n == 0)
+ return;
+ for (j = 1; j <= n; j *= 2)
+ m = 2 * j - 1;
+ for (m /= 2; m != 0; m /= 2) {
+ k = n - m;
+ for (j = 1; j <= k; j++) {
+ for (ai = &a[j]; ai > a; ai -= m) {
+ aim = &ai[m];
+ if (aim < ai)
+ break; /* wraparound */
+ if (aim->value > ai[0].value ||
+ (aim->value == ai[0].value && aim->serial > ai[0].serial))
+ break;
+ w.value = ai[0].value;
+ ai[0].value = aim->value;
+ aim->value = w.value;
+ w.serial = ai[0].serial;
+ ai[0].serial = aim->serial;
+ aim->serial = w.serial;
+ }
+ }
+ }
}
static void uni_range(int a, int b)
{
- if (a < b)
- printf("%d,%d", a, b - a + 1);
- else if (a == b)
- printf("%d", b);
- else
- printf("%d,0", b);
+ if (a < b)
+ printf("%d,%d", a, b - a + 1);
+ else if (a == b)
+ printf("%d", b);
+ else
+ printf("%d,0", b);
}
-static int fetch(long *f, int a, int b, FILE *lb, int ch)
+static int fetch(long *f, int a, int b, FILE * lb, int ch)
{
- int i, j, c, lastc, col, nc;
-
- if (a > b)
- return (0);
- for (i = a; i <= b; i++) {
- fseek(lb, f[i - 1], SEEK_SET);
- nc = f[i] - f[i - 1];
- if (ch != '\0') {
- putchar(ch);
- if (cmd_flags & FLAG_T)
- putchar('\t');
- }
- col = 0;
- for (j = 0, lastc = '\0'; j < nc; j++, lastc = c) {
- if ((c = getc(lb)) == EOF) {
- puts("\n\\ No newline at end of file");
- return (0);
- }
- if (c == '\t' && (cmd_flags & FLAG_t)) {
- do {
- putchar(' ');
- } while (++col & 7);
- } else {
- putchar(c);
- col++;
- }
- }
- }
- return (0);
+ int i, j, c, lastc, col, nc;
+
+ if (a > b)
+ return (0);
+ for (i = a; i <= b; i++) {
+ fseek(lb, f[i - 1], SEEK_SET);
+ nc = f[i] - f[i - 1];
+ if (ch != '\0') {
+ putchar(ch);
+ if (cmd_flags & FLAG_T)
+ putchar('\t');
+ }
+ col = 0;
+ for (j = 0, lastc = '\0'; j < nc; j++, lastc = c) {
+ if ((c = getc(lb)) == EOF) {
+ puts("\n\\ No newline at end of file");
+ return (0);
+ }
+ if (c == '\t' && (cmd_flags & FLAG_t)) {
+ do {
+ putchar(' ');
+ } while (++col & 7);
+ } else {
+ putchar(c);
+ col++;
+ }
+ }
+ }
+ return (0);
}
-static int asciifile(FILE *f)
+static int asciifile(FILE * f)
{
#if ENABLE_FEATURE_DIFF_BINARY
unsigned char buf[BUFSIZ];
}
/* dump accumulated "unified" diff changes */
-static void dump_unified_vec(FILE *f1, FILE *f2)
+static void dump_unified_vec(FILE * f1, FILE * f2)
{
struct context_vec *cvp = context_vec_start;
- int lowa, upb, lowc, upd;
- int a, b, c, d;
- char ch;
-
- if (context_vec_start > context_vec_ptr)
- 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);
-
- fputs("@@ -", stdout);
- uni_range(lowa, upb);
- fputs(" +", stdout);
- uni_range(lowc, upd);
- fputs(" @@", stdout);
- putchar('\n');
-
- /*
- * Output changes in "unified" diff format--the old and new lines
- * are printed together.
- */
- for (; cvp <= context_vec_ptr; cvp++) {
- a = cvp->a;
- b = cvp->b;
- c = cvp->c;
- d = cvp->d;
-
- /*
- * c: both new and old changes
- * d: only changes in the old file
- * a: only changes in the new file
- */
- if (a <= b && c <= d)
- ch = 'c';
- else
- ch = (a <= b) ? 'd' : 'a';
+ int lowa, upb, lowc, upd;
+ int a, b, c, d;
+ char ch;
+
+ if (context_vec_start > context_vec_ptr)
+ 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);
+
+ fputs("@@ -", stdout);
+ uni_range(lowa, upb);
+ fputs(" +", stdout);
+ uni_range(lowc, upd);
+ fputs(" @@", stdout);
+ putchar('\n');
+
+ /*
+ * Output changes in "unified" diff format--the old and new lines
+ * are printed together.
+ */
+ for (; cvp <= context_vec_ptr; cvp++) {
+ a = cvp->a;
+ b = cvp->b;
+ c = cvp->c;
+ d = cvp->d;
+
+ /*
+ * c: both new and old changes
+ * d: only changes in the old file
+ * a: only changes in the new file
+ */
+ if (a <= b && c <= d)
+ ch = 'c';
+ else
+ ch = (a <= b) ? 'd' : 'a';
#if 0
- switch (ch) {
- case 'c':
- fetch(ixold, lowa, a - 1, f1, ' ');
- fetch(ixold, a, b, f1, '-');
- fetch(ixnew, c, d, f2, '+');
- break;
- case 'd':
- fetch(ixold, lowa, a - 1, f1, ' ');
- fetch(ixold, a, b, f1, '-');
- break;
- case 'a':
- fetch(ixnew, lowc, c - 1, f2, ' ');
- fetch(ixnew, c, d, f2, '+');
- break;
- }
+ switch (ch) {
+ case 'c':
+ fetch(ixold, lowa, a - 1, f1, ' ');
+ fetch(ixold, a, b, f1, '-');
+ fetch(ixnew, c, d, f2, '+');
+ break;
+ case 'd':
+ fetch(ixold, lowa, a - 1, f1, ' ');
+ fetch(ixold, a, b, f1, '-');
+ break;
+ case 'a':
+ fetch(ixnew, lowc, c - 1, f2, ' ');
+ fetch(ixnew, c, d, f2, '+');
+ break;
+ }
#else
- if (ch == 'c' || ch == 'd') {
- fetch(ixold, lowa, a - 1, f1, ' ');
- fetch(ixold, a, b, f1, '-');
- }
- if (ch == 'a')
- fetch(ixnew, lowc, c - 1, f2, ' ');
- if (ch == 'c' || ch == 'a')
- fetch(ixnew, c, d, f2, '+');
+ if (ch == 'c' || ch == 'd') {
+ fetch(ixold, lowa, a - 1, f1, ' ');
+ fetch(ixold, a, b, f1, '-');
+ }
+ if (ch == 'a')
+ fetch(ixnew, lowc, c - 1, f2, ' ');
+ if (ch == 'c' || ch == 'a')
+ fetch(ixnew, c, d, f2, '+');
#endif
- lowa = b + 1;
- lowc = d + 1;
- }
- fetch(ixnew, d + 1, upd, f2, ' ');
+ lowa = b + 1;
+ lowc = d + 1;
+ }
+ fetch(ixnew, d + 1, upd, f2, ' ');
- context_vec_ptr = context_vec_start - 1;
+ context_vec_ptr = context_vec_start - 1;
}
static void print_header(const char *file1, const char *file2)
{
- if (label[0] != NULL)
- printf("%s %s\n", "---",
- label[0]);
- else
- printf("%s %s\t%s", "---",
- file1, ctime(&stb1.st_mtime));
- if (label[1] != NULL)
- printf("%s %s\n", "+++",
- label[1]);
- else
- printf("%s %s\t%s", "+++",
- file2, ctime(&stb2.st_mtime));
+ if (label[0] != NULL)
+ printf("%s %s\n", "---", label[0]);
+ else
+ printf("%s %s\t%s", "---", file1, ctime(&stb1.st_mtime));
+ if (label[1] != NULL)
+ printf("%s %s\n", "+++", label[1]);
+ else
+ printf("%s %s\t%s", "+++", file2, ctime(&stb2.st_mtime));
}
* lines appended (beginning at b). If c is greater than d then there are
* lines missing from the to file.
*/
-static void change(char *file1, FILE *f1, char *file2, FILE *f2, int a, int b, int c, int d)
+static void change(char *file1, FILE * f1, char *file2, FILE * f2, int a,
+ int b, int c, int d)
{
static size_t max_context = 64;
- if (a > b && c > d) return;
- if (cmd_flags & FLAG_q) return;
-
- /*
- * Allocate change records as needed.
- */
- if (context_vec_ptr == context_vec_end - 1) {
- ptrdiff_t offset = context_vec_ptr - context_vec_start;
- max_context <<= 1;
- context_vec_start = xrealloc(context_vec_start,
- max_context * sizeof(struct context_vec));
- context_vec_end = context_vec_start + max_context;
- context_vec_ptr = context_vec_start + offset;
- }
- if (anychange == 0) {
- /*
- * Print the context/unidiff header first time through.
- */
- print_header(file1, file2);
- anychange = 1;
- } else if (a > context_vec_ptr->b + (2 * context) + 1 &&
- c > context_vec_ptr->d + (2 * context) + 1) {
- /*
- * If this change is more than 'context' lines from the
- * previous change, dump the record and reset it.
- */
- dump_unified_vec(f1, f2);
- }
- context_vec_ptr++;
- context_vec_ptr->a = a;
- context_vec_ptr->b = b;
- context_vec_ptr->c = c;
- context_vec_ptr->d = d;
- return;
-
+ if (a > b && c > d)
+ return;
+ if (cmd_flags & FLAG_q)
+ return;
+
+ /*
+ * Allocate change records as needed.
+ */
+ if (context_vec_ptr == context_vec_end - 1) {
+ ptrdiff_t offset = context_vec_ptr - context_vec_start;
+
+ max_context <<= 1;
+ context_vec_start = xrealloc(context_vec_start,
+ max_context *
+ sizeof(struct context_vec));
+ context_vec_end = context_vec_start + max_context;
+ context_vec_ptr = context_vec_start + offset;
+ }
+ if (anychange == 0) {
+ /*
+ * Print the context/unidiff header first time through.
+ */
+ print_header(file1, file2);
+ anychange = 1;
+ } else if (a > context_vec_ptr->b + (2 * context) + 1 &&
+ c > context_vec_ptr->d + (2 * context) + 1) {
+ /*
+ * If this change is more than 'context' lines from the
+ * previous change, dump the record and reset it.
+ */
+ dump_unified_vec(f1, f2);
+ }
+ context_vec_ptr++;
+ context_vec_ptr->a = a;
+ context_vec_ptr->b = b;
+ context_vec_ptr->c = c;
+ context_vec_ptr->d = d;
+ return;
+
}
-static void output(char *file1, FILE *f1, char *file2, FILE *f2)
+static void output(char *file1, FILE * f1, char *file2, FILE * f2)
{
- /* Note that j0 and j1 can't be used as they are defined in math.h.
- * This also allows the rather amusing variable 'j00'... */
- int m, i0, i1, j00, j01;
-
- rewind(f1);
- rewind(f2);
- m = len[0];
- J[0] = 0;
- J[m + 1] = len[1] + 1;
- for (i0 = 1; i0 <= m; i0 = i1 + 1) {
- while (i0 <= m && J[i0] == J[i0 - 1] + 1)
- i0++;
- j00 = J[i0 - 1] + 1;
- i1 = i0 - 1;
- while (i1 < m && J[i1 + 1] == 0)
- i1++;
- j01 = J[i1 + 1] - 1;
- J[i1] = j01;
- change(file1, f1, file2, f2, i0, i1, j00, j01);
- }
- if (m == 0) {
- change(file1, f1, file2, f2, 1, 0, 1, len[1]);
+ /* Note that j0 and j1 can't be used as they are defined in math.h.
+ * This also allows the rather amusing variable 'j00'... */
+ int m, i0, i1, j00, j01;
+
+ rewind(f1);
+ rewind(f2);
+ m = len[0];
+ J[0] = 0;
+ J[m + 1] = len[1] + 1;
+ for (i0 = 1; i0 <= m; i0 = i1 + 1) {
+ while (i0 <= m && J[i0] == J[i0 - 1] + 1)
+ i0++;
+ j00 = J[i0 - 1] + 1;
+ i1 = i0 - 1;
+ while (i1 < m && J[i1 + 1] == 0)
+ i1++;
+ j01 = J[i1 + 1] - 1;
+ J[i1] = j01;
+ change(file1, f1, file2, f2, i0, i1, j00, j01);
+ }
+ if (m == 0) {
+ change(file1, f1, file2, f2, 1, 0, 1, len[1]);
}
if (anychange != 0) {
- dump_unified_vec(f1, f2);
- }
+ dump_unified_vec(f1, f2);
+ }
}
/*
static int diffreg(char *ofile1, char *ofile2, int flags)
{
- char *file1 = ofile1;
- char *file2 = ofile2;
- FILE *f1 = NULL;
- FILE *f2 = NULL;
- int rval = D_SAME;
- int i;
-
- anychange = 0;
- context_vec_ptr = context_vec_start - 1;
-
- if (S_ISDIR(stb1.st_mode) != S_ISDIR(stb2.st_mode))
- return (S_ISDIR(stb1.st_mode) ? D_MISMATCH1 : D_MISMATCH2);
- if (strcmp(file1, "-") == 0 && strcmp(file2, "-") == 0)
- goto closem;
-
- if (flags & D_EMPTY1)
- f1 = bb_xfopen(bb_dev_null, "r");
- else {
- if (strcmp(file1, "-") == 0)
- f1 = stdin;
- else
- f1 = bb_xfopen(file1, "r");
- }
-
- if (flags & D_EMPTY2)
- f2 = bb_xfopen(bb_dev_null, "r");
- else {
- if (strcmp(file2, "-") == 0)
- f2 = stdin;
- else
- f2 = bb_xfopen(file2, "r");
- }
-
- if ((i=files_differ(f1, f2, flags)) == 0)
- goto closem;
- else if (i != 1) {/* 1 == ok */
- /* error */
- status |= 2;
- goto closem;
- }
-
- if (!asciifile(f1) || !asciifile(f2)) {
- rval = D_BINARY;
- status |= 1;
- goto closem;
- }
-
- prepare(0, f1, stb1.st_size);
- prepare(1, f2, stb2.st_size);
- prune();
- sort(sfile[0], slen[0]);
- sort(sfile[1], slen[1]);
-
- member = (int *)file[1];
- equiv(sfile[0], slen[0], sfile[1], slen[1], member);
- member = xrealloc(member, (slen[1] + 2) * sizeof(int));
-
- class = (int *)file[0];
- unsort(sfile[0], slen[0], class);
- class = xrealloc(class, (slen[0] + 2) * sizeof(int));
-
- klist = xmalloc((slen[0] + 2) * sizeof(int));
- clen = 0;
- clistlen = 100;
- clist = xmalloc(clistlen * sizeof(struct cand));
- i = stone(class, slen[0], member, klist);
- free(member);
- free(class);
-
- J = xrealloc(J, (len[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));
- check(f1, f2);
- output(file1, f1, file2, f2);
-
-closem:
- if (anychange) {
+ char *file1 = ofile1;
+ char *file2 = ofile2;
+ FILE *f1 = NULL;
+ FILE *f2 = NULL;
+ int rval = D_SAME;
+ int i;
+
+ anychange = 0;
+ context_vec_ptr = context_vec_start - 1;
+
+ if (S_ISDIR(stb1.st_mode) != S_ISDIR(stb2.st_mode))
+ return (S_ISDIR(stb1.st_mode) ? D_MISMATCH1 : D_MISMATCH2);
+ if (strcmp(file1, "-") == 0 && strcmp(file2, "-") == 0)
+ goto closem;
+
+ if (flags & D_EMPTY1)
+ f1 = bb_xfopen(bb_dev_null, "r");
+ else {
+ if (strcmp(file1, "-") == 0)
+ f1 = stdin;
+ else
+ f1 = bb_xfopen(file1, "r");
+ }
+
+ if (flags & D_EMPTY2)
+ f2 = bb_xfopen(bb_dev_null, "r");
+ else {
+ if (strcmp(file2, "-") == 0)
+ f2 = stdin;
+ else
+ f2 = bb_xfopen(file2, "r");
+ }
+
+ if ((i = files_differ(f1, f2, flags)) == 0)
+ goto closem;
+ else if (i != 1) { /* 1 == ok */
+ /* error */
+ status |= 2;
+ goto closem;
+ }
+
+ if (!asciifile(f1) || !asciifile(f2)) {
+ rval = D_BINARY;
+ status |= 1;
+ goto closem;
+ }
+
+ prepare(0, f1, stb1.st_size);
+ prepare(1, f2, stb2.st_size);
+ prune();
+ sort(sfile[0], slen[0]);
+ sort(sfile[1], slen[1]);
+
+ member = (int *) file[1];
+ equiv(sfile[0], slen[0], sfile[1], slen[1], member);
+ member = xrealloc(member, (slen[1] + 2) * sizeof(int));
+
+ class = (int *) file[0];
+ unsort(sfile[0], slen[0], class);
+ class = xrealloc(class, (slen[0] + 2) * sizeof(int));
+
+ klist = xmalloc((slen[0] + 2) * sizeof(int));
+ clen = 0;
+ clistlen = 100;
+ clist = xmalloc(clistlen * sizeof(struct cand));
+ i = stone(class, slen[0], member, klist);
+ free(member);
+ free(class);
+
+ J = xrealloc(J, (len[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));
+ check(f1, f2);
+ output(file1, f1, file2, f2);
+
+ closem:
+ if (anychange) {
status |= 1;
- if (rval == D_SAME)
- rval = D_DIFFER;
- }
- if (f1 != NULL)
- fclose(f1);
- if (f2 != NULL)
- fclose(f2);
- if (file1 != ofile1)
- free(file1);
- if (file2 != ofile2)
- free(file2);
+ if (rval == D_SAME)
+ rval = D_DIFFER;
+ }
+ if (f1 != NULL)
+ fclose(f1);
+ if (f2 != NULL)
+ fclose(f2);
+ if (file1 != ofile1)
+ free(file1);
+ if (file2 != ofile2)
+ free(file2);
return (rval);
}
#if ENABLE_FEATURE_DIFF_DIR
-static void do_diff (char *dir1, char *path1, char *dir2, char *path2) {
-
+static void do_diff(char *dir1, char *path1, char *dir2, char *path2)
+{
+
int flags = D_HEADER;
int val;
-
+
char *fullpath1 = bb_xasprintf("%s/%s", dir1, path1);
char *fullpath2 = bb_xasprintf("%s/%s", dir2, path2);
if (stb1.st_mode == 0)
stb1.st_mode = stb2.st_mode;
-
+
if (S_ISDIR(stb1.st_mode) && S_ISDIR(stb2.st_mode)) {
printf("Common subdirectories: %s and %s\n", fullpath1, fullpath2);
return;
val = D_SKIPPED2;
else
val = diffreg(fullpath1, fullpath2, flags);
-
+
print_status(val, fullpath1, fullpath2, NULL);
}
#endif
#if ENABLE_FEATURE_DIFF_DIR
-static int dir_strcmp(const void *p1, const void *p2) {
- return strcmp(*(char * const *)p1, *(char * const *)p2);
+static int dir_strcmp(const void *p1, const void *p2)
+{
+ return strcmp(*(char *const *) p1, *(char *const *) p2);
}
/* This function adds a filename to dl, the directory listing. */
-static int add_to_dirlist (const char *filename,
- struct stat ATTRIBUTE_UNUSED *sb, void *userdata) {
+static int add_to_dirlist(const char *filename,
+ struct stat ATTRIBUTE_UNUSED * sb, void *userdata)
+{
dl_count++;
dl = xrealloc(dl, dl_count * sizeof(char *));
dl[dl_count - 1] = bb_xstrdup(filename);
if (cmd_flags & FLAG_r) {
int *pp = (int *) userdata;
int path_len = *pp + 1;
+
dl[dl_count - 1] = &(dl[dl_count - 1])[path_len];
}
return TRUE;
}
/* This returns a sorted directory listing. */
-static char **get_dir(char *path) {
+static char **get_dir(char *path)
+{
int i;
char **retval;
/* Now fill dl with a listing. */
if (cmd_flags & FLAG_r)
- recursive_action(path, TRUE, TRUE, FALSE, add_to_dirlist, NULL, userdata);
+ recursive_action(path, TRUE, TRUE, FALSE, add_to_dirlist, NULL,
+ userdata);
else {
DIR *dp;
struct dirent *ep;
return retval;
}
-static void diffdir (char *p1, char *p2) {
-
+static void diffdir(char *p1, char *p2)
+{
+
char **dirlist1, **dirlist2;
char *dp1, *dp2;
int dirlist1_count, dirlist2_count;
int pos;
/* Check for trailing slashes. */
-
+
if (p1[strlen(p1) - 1] == '/')
p1[strlen(p1) - 1] = '\0';
if (p2[strlen(p2) - 1] == '/')
p2[strlen(p2) - 1] = '\0';
-
+
/* Get directory listings for p1 and p2. */
-
+
dirlist1 = get_dir(p1);
dirlist1_count = dl_count;
dirlist1[dirlist1_count] = NULL;
dirlist2 = get_dir(p2);
dirlist2_count = dl_count;
dirlist2[dirlist2_count] = NULL;
-
+
/* If -S was set, find the starting point. */
if (start) {
while (*dirlist1 != NULL && strcmp(*dirlist1, start) < 0)
if ((*dirlist1 == NULL) || (*dirlist2 == NULL))
bb_error_msg("Invalid argument to -S");
}
-
+
/* Now that both dirlist1 and dirlist2 contain sorted directory
* listings, we can start to go through dirlist1. If both listings
* contain the same file, then do a normal diff. Otherwise, behaviour
- * is determined by whether the -N flag is set. */
+ * is determined by whether the -N flag is set. */
while (*dirlist1 != NULL || *dirlist2 != NULL) {
dp1 = *dirlist1;
dp2 = *dirlist2;
do_diff(p1, dp1, p2, dp2);
dirlist1++;
dirlist2++;
- }
- else if (pos < 0) {
+ } else if (pos < 0) {
if (cmd_flags & FLAG_N)
do_diff(p1, dp1, p2, NULL);
else
print_only(p1, strlen(p1) + 1, dp1);
dirlist1++;
- }
- else {
+ } else {
if (cmd_flags & FLAG_N)
do_diff(p1, NULL, p2, dp2);
else
-int diff_main(int argc, char **argv) {
+int diff_main(int argc, char **argv)
+{
char *ep;
int gotstdin = 0;
char *U_opt;
llist_t *L_arg = NULL;
+
bb_opt_complementally = "L::";
- cmd_flags = bb_getopt_ulflags(argc, argv, "abdiL:NqrsS:tTU:wu", &L_arg, &start, &U_opt);
+ cmd_flags =
+ bb_getopt_ulflags(argc, argv, "abdiL:NqrsS:tTU:wu", &L_arg, &start,
+ &U_opt);
if (cmd_flags & FLAG_L) {
while (L_arg) {
/* If both label[0] and label[1] were set, they need to be swapped. */
if (label[0] && label[1]) {
char *tmp;
+
tmp = label[1];
label[1] = label[0];
label[0] = tmp;
}
}
- context = 3; /* This is the default number of lines of context. */
+ context = 3; /* This is the default number of lines of context. */
if (cmd_flags & FLAG_U) {
context = strtol(U_opt, &ep, 10);
if (context == 0) {
}
}
argc -= optind;
- argv += optind;
+ argv += optind;
- /*
- * Do sanity checks, fill in stb1 and stb2 and call the appropriate
- * driver routine. Both drivers use the contents of stb1 and stb2.
- */
- if (argc < 2) {
+ /*
+ * Do sanity checks, fill in stb1 and stb2 and call the appropriate
+ * driver routine. Both drivers use the contents of stb1 and stb2.
+ */
+ if (argc < 2) {
bb_error_msg("Missing filename");
bb_show_usage();
}
- if (strcmp(argv[0], "-") == 0) {
- fstat(STDIN_FILENO, &stb1);
- gotstdin = 1;
- } else
- xstat(argv[0], &stb1);
- if (strcmp(argv[1], "-") == 0) {
- fstat(STDIN_FILENO, &stb2);
- gotstdin = 1;
- } else
- xstat(argv[1], &stb2);
- if (gotstdin && (S_ISDIR(stb1.st_mode) || S_ISDIR(stb2.st_mode)))
- bb_error_msg_and_die("Can't compare - to a directory");
- if (S_ISDIR(stb1.st_mode) && S_ISDIR(stb2.st_mode)) {
+ if (strcmp(argv[0], "-") == 0) {
+ fstat(STDIN_FILENO, &stb1);
+ gotstdin = 1;
+ } else
+ xstat(argv[0], &stb1);
+ if (strcmp(argv[1], "-") == 0) {
+ fstat(STDIN_FILENO, &stb2);
+ gotstdin = 1;
+ } else
+ xstat(argv[1], &stb2);
+ if (gotstdin && (S_ISDIR(stb1.st_mode) || S_ISDIR(stb2.st_mode)))
+ bb_error_msg_and_die("Can't compare - to a directory");
+ if (S_ISDIR(stb1.st_mode) && S_ISDIR(stb2.st_mode)) {
#if ENABLE_FEATURE_DIFF_DIR
diffdir(argv[0], argv[1]);
#else
bb_error_msg_and_die("Directory comparison not supported");
#endif
- }
- else {
+ } else {
if (S_ISDIR(stb1.st_mode)) {
argv[0] = concat_path_file(argv[0], argv[1]);
xstat(argv[0], &stb1);
}
exit(status);
}
-
projects / oweals / busybox.git / blobdiff