regex: add regexec_buf() that can work on a non NUL-terminated string

diff --git a/combine-diff.c b/combine-diff.c
index 55713049a4d6764722307e2a2c870996ff9b373b..0e1d4b0893ce0266a6d15f880bb6ad66eb2619fb 100644 (file)
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -189,11 +189,11 @@ static struct lline *coalesce_lines(struct lline *base, int *lenbase,
         *   - Else if we have NEW, insert newend lline into base and
         *   consume newend
         */
-       lcs = xcalloc(origbaselen + 1, sizeof(int*));
-       directions = xcalloc(origbaselen + 1, sizeof(enum coalesce_direction*));
+       lcs = xcalloc(st_add(origbaselen, 1), sizeof(int*));
+       directions = xcalloc(st_add(origbaselen, 1), sizeof(enum coalesce_direction*));
        for (i = 0; i < origbaselen + 1; i++) {
-               lcs[i] = xcalloc(lennew + 1, sizeof(int));
-               directions[i] = xcalloc(lennew + 1, sizeof(enum coalesce_direction));
+               lcs[i] = xcalloc(st_add(lennew, 1), sizeof(int));
+               directions[i] = xcalloc(st_add(lennew, 1), sizeof(enum coalesce_direction));
                directions[i][0] = BASE;
        }
        for (j = 1; j < lennew + 1; j++)
@@ -319,7 +319,7 @@ static void append_lost(struct sline *sline, int n, const char *line, int len)
        if (line[len-1] == '\n')
                len--;
 
-       lline = xmalloc(sizeof(*lline) + len + 1);
+       FLEX_ALLOC_MEM(lline, line, line, len);
        lline->len = len;
        lline->next = NULL;
        lline->prev = sline->plost.lost_tail;
@@ -330,8 +330,6 @@ static void append_lost(struct sline *sline, int n, const char *line, int len)
        sline->plost.lost_tail = lline;
        sline->plost.len++;
        lline->parent_map = this_mask;
-       memcpy(lline->line, line, len);
-       lline->line[len] = 0;
 }
 
 struct combine_diff_state {
@@ -1043,7 +1041,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
                                elem->mode = canon_mode(S_IFLNK);
 
                        result_size = len;
-                       result = xmalloc(len + 1);
+                       result = xmallocz(len);
 
                        done = read_in_full(fd, result, len);
                        if (done < 0)
@@ -1051,8 +1049,6 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
                        else if (done < len)
                                die("early EOF '%s'", elem->path);
 
-                       result[len] = 0;
-
                        /* If not a fake symlink, apply filters, e.g. autocrlf */
                        if (is_file) {
                                struct strbuf buf = STRBUF_INIT;
@@ -1115,7 +1111,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
        if (result_size && result[result_size-1] != '\n')
                cnt++; /* incomplete line */
 
-       sline = xcalloc(cnt+2, sizeof(*sline));
+       sline = xcalloc(st_add(cnt, 2), sizeof(*sline));
        sline[0].bol = result;
        for (lno = 0, cp = result; cp < result + result_size; cp++) {
                if (*cp == '\n') {
@@ -1134,7 +1130,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
        /* Even p_lno[cnt+1] is valid -- that is for the end line number
         * for deletion hunk at the end.
         */
-       sline[0].p_lno = xcalloc((cnt+2) * num_parent, sizeof(unsigned long));
+       sline[0].p_lno = xcalloc(st_mult(st_add(cnt, 2), num_parent), sizeof(unsigned long));
        for (lno = 0; lno <= cnt; lno++)
                sline[lno+1].p_lno = sline[lno].p_lno + num_parent;
 
@@ -1266,7 +1262,7 @@ static struct diff_filepair *combined_pair(struct combine_diff_path *p,
        struct diff_filespec *pool;
 
        pair = xmalloc(sizeof(*pair));
-       pool = xcalloc(num_parent + 1, sizeof(struct diff_filespec));
+       pool = xcalloc(st_add(num_parent, 1), sizeof(struct diff_filespec));
        pair->one = pool + 1;
        pair->two = pool;
 
@@ -1372,7 +1368,7 @@ static struct combine_diff_path *find_paths_multitree(
        struct combine_diff_path paths_head;
        struct strbuf base;
 
-       parents_sha1 = xmalloc(nparent * sizeof(parents_sha1[0]));
+       ALLOC_ARRAY(parents_sha1, nparent);
        for (i = 0; i < nparent; i++)
                parents_sha1[i] = parents->sha1[i];
 
@@ -1483,7 +1479,7 @@ void diff_tree_combined(const unsigned char *sha1,
        if (opt->orderfile && num_paths) {
                struct obj_order *o;
 
-               o = xmalloc(sizeof(*o) * num_paths);
+               ALLOC_ARRAY(o, num_paths);
                for (i = 0, p = paths; p; p = p->next, i++)
                        o[i].obj = p;
                order_objects(opt->orderfile, path_path, o, num_paths);