Fix typo in git-rebase.sh.
[gitweb.git] / combine-diff.c
index 506c095997f3d5c97a4443ce7860e4af143d6cc7..d812600d1185aa82b3a0dae69f61daca789b9322 100644 (file)
@@ -8,8 +8,6 @@ static int uninteresting(struct diff_filepair *p)
 {
        if (diff_unmodified_pair(p))
                return 1;
-       if (!S_ISREG(p->one->mode) || !S_ISREG(p->two->mode))
-               return 1;
        return 0;
 }
 
@@ -41,6 +39,7 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr,
                        p->mode = q->queue[i]->two->mode;
                        memcpy(p->parent[n].sha1, q->queue[i]->one->sha1, 20);
                        p->parent[n].mode = q->queue[i]->one->mode;
+                       p->parent[n].status = q->queue[i]->status;
                        *tail = p;
                        tail = &p->next;
                }
@@ -64,6 +63,7 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr,
                                memcpy(p->parent[n].sha1,
                                       q->queue[i]->one->sha1, 20);
                                p->parent[n].mode = q->queue[i]->one->mode;
+                               p->parent[n].status = q->queue[i]->status;
                                break;
                        }
                }
@@ -226,6 +226,9 @@ static void combine_diff(const unsigned char *parent, const char *ourtmp,
        unsigned long nmask = (1UL << n);
        struct sline *lost_bucket = NULL;
 
+       if (!cnt)
+               return; /* result deleted */
+
        write_temp_blob(parent_tmp, parent);
        sprintf(cmd, "diff --unified=0 -La/x -Lb/x '%s' '%s'",
                parent_tmp, ourtmp);
@@ -542,6 +545,9 @@ static void dump_sline(struct sline *sline, unsigned long cnt, int num_parent)
        int i;
        unsigned long lno = 0;
 
+       if (!cnt)
+               return; /* result deleted */
+
        while (1) {
                struct sline *sl = &sline[lno];
                int hunk_end;
@@ -610,10 +616,12 @@ static void reuse_combine_diff(struct sline *sline, unsigned long cnt,
                        sline->flag |= imask;
                sline++;
        }
+       /* the overall size of the file (sline[cnt]) */
+       sline->p_lno[i] = sline->p_lno[j];
 }
 
-int show_combined_diff(struct combine_diff_path *elem, int num_parent,
-                      int dense, const char *header)
+static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
+                          int dense, const char *header)
 {
        unsigned long size, cnt, lno;
        char *result, *cp, *ep;
@@ -622,9 +630,10 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
        int i, show_hunks, shown_header = 0;
        char ourtmp_buf[TMPPATHLEN];
        char *ourtmp = ourtmp_buf;
+       int working_tree_file = !memcmp(elem->sha1, null_sha1, 20);
 
        /* Read the result of merge first */
-       if (memcmp(elem->sha1, null_sha1, 20)) {
+       if (!working_tree_file) {
                result = grab_blob(elem->sha1, &size);
                write_to_temp_file(ourtmp, result, size);
        }
@@ -638,6 +647,7 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
                        int len = st.st_size;
                        int cnt = 0;
 
+                       elem->mode = DIFF_FILE_CANON_MODE(st.st_mode);
                        size = len;
                        result = xmalloc(len + 1);
                        while (cnt < len) {
@@ -653,6 +663,7 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
                else {
                        /* deleted file */
                        size = 0;
+                       elem->mode = 0;
                        result = xmalloc(1);
                        result[0] = 0;
                        ourtmp = "/dev/null";
@@ -665,27 +676,26 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
                if (*cp == '\n')
                        cnt++;
        }
-       if (result[size-1] != '\n')
+       if (size && result[size-1] != '\n')
                cnt++; /* incomplete line */
 
        sline = xcalloc(cnt+1, sizeof(*sline));
        ep = result;
        sline[0].bol = result;
+       for (lno = 0; lno <= cnt; lno++) {
+               sline[lno].lost_tail = &sline[lno].lost_head;
+               sline[lno].flag = 0;
+       }
        for (lno = 0, cp = result; cp - result < size; cp++) {
                if (*cp == '\n') {
-                       sline[lno].lost_tail = &sline[lno].lost_head;
                        sline[lno].len = cp - sline[lno].bol;
-                       sline[lno].flag = 0;
                        lno++;
                        if (lno < cnt)
                                sline[lno].bol = cp + 1;
                }
        }
-       if (result[size-1] != '\n') {
-               sline[cnt-1].lost_tail = &sline[cnt-1].lost_head;
+       if (size && result[size-1] != '\n')
                sline[cnt-1].len = size - (sline[cnt-1].bol - result);
-               sline[cnt-1].flag = 0;
-       }
 
        sline[0].p_lno = xcalloc((cnt+1) * num_parent, sizeof(unsigned long));
        for (lno = 0; lno < cnt; lno++)
@@ -709,12 +719,9 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
 
        show_hunks = make_hunks(sline, cnt, num_parent, dense);
 
-       if (show_hunks || mode_differs) {
+       if (show_hunks || mode_differs || working_tree_file) {
                const char *abb;
-               char null_abb[DEFAULT_ABBREV + 1];
 
-               memset(null_abb, '0', DEFAULT_ABBREV);
-               null_abb[DEFAULT_ABBREV] = 0;
                if (header) {
                        shown_header++;
                        puts(header);
@@ -727,30 +734,34 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
                putchar('\n');
                printf("index ");
                for (i = 0; i < num_parent; i++) {
-                       if (elem->parent[i].mode != elem->mode)
-                               mode_differs = 1;
-                       if (memcmp(elem->parent[i].sha1, null_sha1, 20))
-                               abb = find_unique_abbrev(elem->parent[i].sha1,
-                                                        DEFAULT_ABBREV);
-                       else
-                               abb = null_abb;
+                       abb = find_unique_abbrev(elem->parent[i].sha1,
+                                                DEFAULT_ABBREV);
                        printf("%s%s", i ? "," : "", abb);
                }
-               if (memcmp(elem->sha1, null_sha1, 20))
-                       abb = find_unique_abbrev(elem->sha1, DEFAULT_ABBREV);
-               else
-                       abb = null_abb;
+               abb = find_unique_abbrev(elem->sha1, DEFAULT_ABBREV);
                printf("..%s\n", abb);
 
                if (mode_differs) {
-                       printf("mode ");
-                       for (i = 0; i < num_parent; i++) {
-                               printf("%s%06o", i ? "," : "",
-                                      elem->parent[i].mode);
+                       int added = !!elem->mode;
+                       for (i = 0; added && i < num_parent; i++)
+                               if (elem->parent[i].status !=
+                                   DIFF_STATUS_ADDED)
+                                       added = 0;
+                       if (added)
+                               printf("new file mode %06o", elem->mode);
+                       else {
+                               if (!elem->mode)
+                                       printf("deleted file ");
+                               printf("mode ");
+                               for (i = 0; i < num_parent; i++) {
+                                       printf("%s%06o", i ? "," : "",
+                                              elem->parent[i].mode);
+                               }
+                               if (elem->mode)
+                                       printf("..%06o", elem->mode);
                        }
-                       printf("..%06o\n", elem->mode);
+                       putchar('\n');
                }
-               /* if (show_hunks) perhaps */
                dump_sline(sline, cnt, num_parent);
        }
        if (ourtmp == ourtmp_buf)
@@ -772,8 +783,92 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
        return shown_header;
 }
 
-int diff_tree_combined_merge(const unsigned char *sha1,
-                            const char *header, int dense)
+#define COLONS "::::::::::::::::::::::::::::::::"
+
+static void show_raw_diff(struct combine_diff_path *p, int num_parent, const char *header, struct diff_options *opt)
+{
+       int i, offset, mod_type = 'A';
+       const char *prefix;
+       int line_termination, inter_name_termination;
+
+       line_termination = opt->line_termination;
+       inter_name_termination = '\t';
+       if (!line_termination)
+               inter_name_termination = 0;
+
+       if (header)
+               puts(header);
+
+       for (i = 0; i < num_parent; i++) {
+               if (p->parent[i].mode)
+                       mod_type = 'M';
+       }
+       if (!p->mode)
+               mod_type = 'D';
+
+       if (opt->output_format == DIFF_FORMAT_RAW) {
+               offset = strlen(COLONS) - num_parent;
+               if (offset < 0)
+                       offset = 0;
+               prefix = COLONS + offset;
+
+               /* Show the modes */
+               for (i = 0; i < num_parent; i++) {
+                       printf("%s%06o", prefix, p->parent[i].mode);
+                       prefix = " ";
+               }
+               printf("%s%06o", prefix, p->mode);
+
+               /* Show sha1's */
+               for (i = 0; i < num_parent; i++)
+                       printf(" %s", diff_unique_abbrev(p->parent[i].sha1,
+                                                        opt->abbrev));
+               printf(" %s ", diff_unique_abbrev(p->sha1, opt->abbrev));
+       }
+
+       if (opt->output_format == DIFF_FORMAT_RAW ||
+           opt->output_format == DIFF_FORMAT_NAME_STATUS) {
+               for (i = 0; i < num_parent; i++)
+                       putchar(p->parent[i].status);
+               putchar(inter_name_termination);
+       }
+
+       if (line_termination) {
+               if (quote_c_style(p->path, NULL, NULL, 0))
+                       quote_c_style(p->path, NULL, stdout, 0);
+               else
+                       printf("%s", p->path);
+               putchar(line_termination);
+       }
+       else {
+               printf("%s%c", p->path, line_termination);
+       }
+}
+
+int show_combined_diff(struct combine_diff_path *p,
+                      int num_parent,
+                      int dense,
+                      const char *header,
+                      struct diff_options *opt)
+{
+       if (!p->len)
+               return 0;
+       switch (opt->output_format) {
+       case DIFF_FORMAT_RAW:
+       case DIFF_FORMAT_NAME_STATUS:
+       case DIFF_FORMAT_NAME:
+               show_raw_diff(p, num_parent, header, opt);
+               return 1;
+
+       default:
+       case DIFF_FORMAT_PATCH:
+               return show_patch_diff(p, num_parent, dense, header);
+       }
+}
+
+const char *diff_tree_combined_merge(const unsigned char *sha1,
+                            const char *header, int dense,
+                            struct diff_options *opt)
 {
        struct commit *commit = lookup_commit(sha1);
        struct diff_options diffopts;
@@ -781,7 +876,7 @@ int diff_tree_combined_merge(const unsigned char *sha1,
        struct combine_diff_path *p, *paths = NULL;
        int num_parent, i, num_paths;
 
-       diff_setup(&diffopts);
+       diffopts = *opt;
        diffopts.output_format = DIFF_FORMAT_NO_OUTPUT;
        diffopts.recursive = 1;
 
@@ -798,6 +893,7 @@ int diff_tree_combined_merge(const unsigned char *sha1,
                struct commit *parent = parents->item;
                diff_tree_sha1(parent->object.sha1, commit->object.sha1, "",
                               &diffopts);
+               diffcore_std(&diffopts);
                paths = intersect_paths(paths, i, num_parent);
                diff_flush(&diffopts);
        }
@@ -809,9 +905,8 @@ int diff_tree_combined_merge(const unsigned char *sha1,
        }
        if (num_paths) {
                for (p = paths; p; p = p->next) {
-                       if (!p->len)
-                               continue;
-                       if (show_combined_diff(p, num_parent, dense, header))
+                       if (show_combined_diff(p, num_parent, dense,
+                                              header, opt))
                                header = NULL;
                }
        }
@@ -822,5 +917,5 @@ int diff_tree_combined_merge(const unsigned char *sha1,
                paths = paths->next;
                free(tmp);
        }
-       return 0;
+       return header;
 }