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-rw-r--r--toys/pending/diff.c312
1 files changed, 156 insertions, 156 deletions
diff --git a/toys/pending/diff.c b/toys/pending/diff.c
index 97cb9475..1b3f80bb 100644
--- a/toys/pending/diff.c
+++ b/toys/pending/diff.c
@@ -34,12 +34,12 @@ config DIFF
#include "toys.h"
GLOBALS(
- long ct;
- char *start;
- struct arg_list *L_list;
+ long ct;
+ char *start;
+ struct arg_list *L_list;
- int dir_num, size, is_binary, status, change, len[2];
- int *offset[2];
+ int dir_num, size, is_binary, status, change, len[2];
+ int *offset[2];
)
#define MIN(x,y) ((x) < (y) ? (x) : (y))
@@ -100,7 +100,7 @@ static int search (struct candidate **K, int r, int k, int j)
{
int low = r, upper = k, mid;
- mid = (low + upper) / 2;
+ mid = (low + upper) / 2;
while (low <= mid) {
if (((struct candidate*)(K[mid]))->b < j &&
((struct candidate*)(K[mid + 1]))->b > j)
@@ -119,7 +119,7 @@ static struct candidate * new_candidate (int i, int j, struct candidate* prev)
{
struct candidate *c = xzalloc(sizeof(struct candidate));
- c->a = i;
+ c->a = i;
c->b = j;
c->prev = prev;
return c;
@@ -128,12 +128,12 @@ static struct candidate * new_candidate (int i, int j, struct candidate* prev)
static void free_candidates(struct candidate *c)
{
- struct candidate *t = c;
-
- while ((t = c)) {
- c = c->next;
- free(t);
- }
+ struct candidate *t = c;
+
+ while ((t = c)) {
+ c = c->next;
+ free(t);
+ }
}
/*
* 1. Search K[r: k] for an element K[s] such that K[s]-> b < j and K[s + 1]->b > j
@@ -147,32 +147,32 @@ static void free_candidates(struct candidate *c)
static void do_merge(struct candidate **K, int *k, int i,
struct v_vector *E, int p)
{
- int r = 0, s, j;
- struct candidate *pr = 0, *c = K[0];
-
- while (1) {
- j = E[p].serial;
- s = search(K, r, *k, j);
- if (s >= 0 && (((struct candidate*)(K[s]))->b < j &&
- ((struct candidate*)(K[s + 1]))->b > j)) {
-
- if (((struct candidate*)(K[s + 1]))->b > j) {
- pr = K[s];
- if (r && K[r]) c->next = K[r];
- K[r] = c;
- r = s + 1;
- c = new_candidate(i , j, pr);
- }
- if (s == *k) {
- K[*k + 2] = K[*k + 1];
- *k = *k + 1;
- break;
- }
- }
- if (E[p].last) break;
- else p = p + 1;
- }
- K[r] = c;
+ int r = 0, s, j;
+ struct candidate *pr = 0, *c = K[0];
+
+ while (1) {
+ j = E[p].serial;
+ s = search(K, r, *k, j);
+ if (s >= 0 && (((struct candidate*)(K[s]))->b < j &&
+ ((struct candidate*)(K[s + 1]))->b > j)) {
+
+ if (((struct candidate*)(K[s + 1]))->b > j) {
+ pr = K[s];
+ if (r && K[r]) c->next = K[r];
+ K[r] = c;
+ r = s + 1;
+ c = new_candidate(i , j, pr);
+ }
+ if (s == *k) {
+ K[*k + 2] = K[*k + 1];
+ *k = *k + 1;
+ break;
+ }
+ }
+ if (E[p].last) break;
+ else p = p + 1;
+ }
+ K[r] = c;
}
static FILE* read_stdin()
@@ -228,15 +228,15 @@ static int read_tok(FILE *fp, off_t *off, int tok)
int bcomp(const void *a, const void *b)
{
- struct v_vector *l = (struct v_vector*)a,
- *r = (struct v_vector*)b;
- int ret = l->hash - r->hash;
-
- if (!ret) {
- if ((r -1)->last) return 0;
- else return -1;
- }
- return ret;
+ struct v_vector *l = (struct v_vector*)a,
+ *r = (struct v_vector*)b;
+ int ret = l->hash - r->hash;
+
+ if (!ret) {
+ if ((r -1)->last) return 0;
+ else return -1;
+ }
+ return ret;
}
/* file[0] corresponds file 1 and file[1] correspond file 2.
* 1. calc hashes for both the files and store them in vector(v[0], v[1])
@@ -306,14 +306,14 @@ static int * create_j_vector()
}
p_vector = xzalloc((file[0].len + 2) * sizeof(int));
- for (i = 1; i <= file[0].len; i++) {
- void *r = bsearch(&v[0][i], (e + 1), file[1].len, sizeof(e[0]), bcomp);
- if (r) p_vector[i] = (struct v_vector*)r - e;
- }
+ for (i = 1; i <= file[0].len; i++) {
+ void *r = bsearch(&v[0][i], (e + 1), file[1].len, sizeof(e[0]), bcomp);
+ if (r) p_vector[i] = (struct v_vector*)r - e;
+ }
- for (i = 1; i <= file[0].len; i++)
- e[i].p = p_vector[i];
- free(p_vector);
+ for (i = 1; i <= file[0].len; i++)
+ e[i].p = p_vector[i];
+ free(p_vector);
size = 100;
kcand = xzalloc(size * sizeof(struct candidate*));
@@ -340,8 +340,8 @@ static int * create_j_vector()
J[pr->a] = pr->b;
J[file[0].len + 1] = file[1].len+1; //mark boundary
- for (i = k + 1; i >= 0; i--) free_candidates(kcand[i]);
- free(kcand);
+ for (i = k + 1; i >= 0; i--) free_candidates(kcand[i]);
+ free(kcand);
for (i = 1; i <= file[0].len; i++) { // jackpot?
if (!J[i]) continue;
@@ -473,7 +473,7 @@ static void add_to_list(struct dirtree *node)
{
char *full_path;
- dir[TT.dir_num].list = xrealloc(dir[TT.dir_num].list,
+ dir[TT.dir_num].list = xrealloc(dir[TT.dir_num].list,
(TT.size + 1)*sizeof(char*));
TT.size++;
full_path = dirtree_path(node, NULL);
@@ -513,19 +513,19 @@ static void do_diff(char **files)
{
long i = 1, size = 1, x = 0, change = 0, ignore_white,
- start1, end1, start2, end2;
+ start1, end1, start2, end2;
struct diff *d;
struct arg_list *llist = TT.L_list;
int *J;
-
- TT.offset[0] = TT.offset[1] = NULL;
- J = diff(files);
+
+ TT.offset[0] = TT.offset[1] = NULL;
+ J = diff(files);
if (!J) return; //No need to compare, have to status only
d = xzalloc(size *sizeof(struct diff));
do {
- ignore_white = 0;
+ ignore_white = 0;
for (d[x].a = i; d[x].a <= file[0].len; d[x].a++) {
if (J[d[x].a] != (J[d[x].a - 1] + 1)) break;
else continue;
@@ -538,22 +538,22 @@ static void do_diff(char **files)
}
d[x].d = (J[d[x].b + 1] - 1);
- if ((toys.optflags & FLAG_B)) {
- if (d[x].a <= d[x].b) {
- if ((TT.offset[0][d[x].b] - TT.offset[0][d[x].a - 1])
- == (d[x].b - d[x].a + 1))
- ignore_white = 1;
- } else if (d[x].c <= d[x].d){
- if ((TT.offset[1][d[x].d] - TT.offset[1][d[x].c - 1])
- == (d[x].d - d[x].c + 1))
- ignore_white = 1;
- }
- }
-
- if ((d[x].a <= d[x].b || d[x].c <= d[x].d) && !ignore_white)
+ if ((toys.optflags & FLAG_B)) {
+ if (d[x].a <= d[x].b) {
+ if ((TT.offset[0][d[x].b] - TT.offset[0][d[x].a - 1])
+ == (d[x].b - d[x].a + 1))
+ ignore_white = 1;
+ } else if (d[x].c <= d[x].d){
+ if ((TT.offset[1][d[x].d] - TT.offset[1][d[x].c - 1])
+ == (d[x].d - d[x].c + 1))
+ ignore_white = 1;
+ }
+ }
+
+ if ((d[x].a <= d[x].b || d[x].c <= d[x].d) && !ignore_white)
change = 1; //is we have diff ?
- if (!ignore_white) d = xrealloc(d, (x + 2) *sizeof(struct diff));
+ if (!ignore_white) d = xrealloc(d, (x + 2) *sizeof(struct diff));
i = d[x].b + 1;
if (i > file[0].len) break;
J[d[x].b] = d[x].d;
@@ -561,7 +561,7 @@ static void do_diff(char **files)
} while (i <= file[0].len);
i = x+1;
- TT.status = change; //update status, may change bcoz of -w etc.
+ TT.status = change; //update status, may change bcoz of -w etc.
if (!(toys.optflags & FLAG_q) && change) { //start of !FLAG_q
@@ -575,40 +575,40 @@ static void do_diff(char **files)
struct diff *t, *ptr1 = d, *ptr2 = d;
while (i) {
- long a,b;
+ long a,b;
- if (TT.ct > file[0].len) TT.ct = file[0].len; //trim context to file len.
+ if (TT.ct > file[0].len) TT.ct = file[0].len; //trim context to file len.
if (ptr1->b < ptr1->a && ptr1->d < ptr1->c) {
i--;
continue;
- }
- //Handle the context stuff
- a = ptr1->a;
- b = ptr1->b;
-
- b = MIN(file[0].len, b);
- if (i == x + 1) ptr1->suff = MAX(1,a - TT.ct);
- else {
- if ((ptr1 - 1)->prev >= (ptr1->a - TT.ct))
- ptr1->suff = (ptr1 - 1)->prev + 1;
- else ptr1->suff = ptr1->a - TT.ct;
- }
+ }
+ //Handle the context stuff
+ a = ptr1->a;
+ b = ptr1->b;
+
+ b = MIN(file[0].len, b);
+ if (i == x + 1) ptr1->suff = MAX(1,a - TT.ct);
+ else {
+ if ((ptr1 - 1)->prev >= (ptr1->a - TT.ct))
+ ptr1->suff = (ptr1 - 1)->prev + 1;
+ else ptr1->suff = ptr1->a - TT.ct;
+ }
calc_ct:
- if (i > 1) {
- if ((ptr2->b + TT.ct) >= (ptr2 + 1)->a) {
- ptr2++;
- i--;
- goto calc_ct;
- } else ptr2->prev = ptr2->b + TT.ct;
- } else ptr2->prev = ptr2->b;
- start1 = (ptr2->prev - ptr1->suff + 1);
- end1 = (start1 == 1) ? -1 : start1;
- start2 = MAX(1, ptr1->c - (ptr1->a - ptr1->suff));
- end2 = ptr2->prev - ptr2->b + ptr2->d;
-
- printf("@@ -%ld", start1 ? ptr1->suff: (ptr1->suff -1));
- if (end1 != -1) printf(",%ld ", ptr2->prev-ptr1->suff + 1);
- else putchar(' ');
+ if (i > 1) {
+ if ((ptr2->b + TT.ct) >= (ptr2 + 1)->a) {
+ ptr2++;
+ i--;
+ goto calc_ct;
+ } else ptr2->prev = ptr2->b + TT.ct;
+ } else ptr2->prev = ptr2->b;
+ start1 = (ptr2->prev - ptr1->suff + 1);
+ end1 = (start1 == 1) ? -1 : start1;
+ start2 = MAX(1, ptr1->c - (ptr1->a - ptr1->suff));
+ end2 = ptr2->prev - ptr2->b + ptr2->d;
+
+ printf("@@ -%ld", start1 ? ptr1->suff: (ptr1->suff -1));
+ if (end1 != -1) printf(",%ld ", ptr2->prev-ptr1->suff + 1);
+ else putchar(' ');
printf("+%ld", (end2 - start2 + 1) ? start2: (start2 -1));
if ((end2 - start2 +1) != 1) printf(",%ld ", (end2 - start2 +1));
@@ -636,45 +636,45 @@ calc_ct:
static void show_status(char **files)
{
- switch (TT.status) {
- case SAME:
- if (toys.optflags & FLAG_s)
- printf("Files %s and %s are identical\n",files[0], files[1]);
- break;
- case DIFFER:
- if ((toys.optflags & FLAG_q) || TT.is_binary)
- printf("Files %s and %s differ\n",files[0], files[1]);
- break;
- }
+ switch (TT.status) {
+ case SAME:
+ if (toys.optflags & FLAG_s)
+ printf("Files %s and %s are identical\n",files[0], files[1]);
+ break;
+ case DIFFER:
+ if ((toys.optflags & FLAG_q) || TT.is_binary)
+ printf("Files %s and %s differ\n",files[0], files[1]);
+ break;
+ }
}
static void create_empty_entry(int l , int r, int j)
{
- struct stat st[2];
- char *f[2], *path[2];
- int i;
-
- if (j > 0 && (toys.optflags & FLAG_N)) {
- path[0] = concat_file_path(dir[0].list[0], dir[1].list[r] + TT.len[1]);
- f[0] = "/dev/null";
- path[1] = f[1] = dir[1].list[r];
- stat(f[1], &st[0]);
- st[1] = st[0];
- }
- else if (j < 0 && (toys.optflags & FLAG_N)) {
- path[1] = concat_file_path(dir[1].list[0], dir[0].list[l] + TT.len[0]);
- f[1] = "/dev/null";
- path[0] = f[0] = dir[0].list[l];
- stat(f[0], &st[0]);
- st[1] = st[0];
- }
-
- if (!j) {
- for (i = 0; i < 2; i++) {
- path[i] = f[i] = dir[i].list[!i ? l: r];
- stat(f[i], &st[i]);
- }
- }
+ struct stat st[2];
+ char *f[2], *path[2];
+ int i;
+
+ if (j > 0 && (toys.optflags & FLAG_N)) {
+ path[0] = concat_file_path(dir[0].list[0], dir[1].list[r] + TT.len[1]);
+ f[0] = "/dev/null";
+ path[1] = f[1] = dir[1].list[r];
+ stat(f[1], &st[0]);
+ st[1] = st[0];
+ }
+ else if (j < 0 && (toys.optflags & FLAG_N)) {
+ path[1] = concat_file_path(dir[1].list[0], dir[0].list[l] + TT.len[0]);
+ f[1] = "/dev/null";
+ path[0] = f[0] = dir[0].list[l];
+ stat(f[0], &st[0]);
+ st[1] = st[0];
+ }
+
+ if (!j) {
+ for (i = 0; i < 2; i++) {
+ path[i] = f[i] = dir[i].list[!i ? l: r];
+ stat(f[i], &st[i]);
+ }
+ }
if (S_ISDIR(st[0].st_mode) && S_ISDIR(st[1].st_mode))
printf("Common subdirectories: %s and %s\n", path[0], path[1]);
@@ -694,8 +694,8 @@ static void create_empty_entry(int l , int r, int j)
} else {
do_diff(f);
show_status(path);
- if (file[0].fp) fclose(file[0].fp);
- if (file[1].fp) fclose(file[1].fp);
+ if (file[0].fp) fclose(file[0].fp);
+ if (file[1].fp) fclose(file[1].fp);
}
if ((toys.optflags & FLAG_N) && j) {
@@ -770,18 +770,18 @@ void diff_main(void)
char *files[2];
struct dirtree *root;
- for (j = 0; j < 2; j++) {
- files[j] = toys.optargs[j];
- if (IS_STDIN(files[j])) {
- if (fstat(0, &st[j]) == -1)
- perror_exit("can fstat %s", files[j]);
- } else {
- if (stat(files[j], &st[j]) == -1)
- perror_exit("can't stat %s", files[j]);
- }
- }
-
- if (IS_STDIN(files[0]) && IS_STDIN(files[1])) { //compat :(
+ for (j = 0; j < 2; j++) {
+ files[j] = toys.optargs[j];
+ if (IS_STDIN(files[j])) {
+ if (fstat(0, &st[j]) == -1)
+ perror_exit("can fstat %s", files[j]);
+ } else {
+ if (stat(files[j], &st[j]) == -1)
+ perror_exit("can't stat %s", files[j]);
+ }
+ }
+
+ if (IS_STDIN(files[0]) && IS_STDIN(files[1])) { //compat :(
show_status(files); //check ASAP
return;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 11:08:29 +0000