t4209: factor out helper function test_log()

diff --git a/line-log.c b/line-log.c
index c2d01dccc2a12a767c442de58ed78df130699d74..717638b333b680da7a3a5acefcb73db9d956a00f 100644 (file)
--- a/line-log.c
+++ b/line-log.c
@@ -23,7 +23,7 @@ static void range_set_grow(struct range_set *rs, size_t extra)
 /* Either initialization would be fine */
 #define RANGE_SET_INIT {0}
 
-static void range_set_init(struct range_set *rs, size_t prealloc)
+void range_set_init(struct range_set *rs, size_t prealloc)
 {
        rs->alloc = rs->nr = 0;
        rs->ranges = NULL;
@@ -31,7 +31,7 @@ static void range_set_init(struct range_set *rs, size_t prealloc)
                range_set_grow(rs, prealloc);
 }
 
-static void range_set_release(struct range_set *rs)
+void range_set_release(struct range_set *rs)
 {
        free(rs->ranges);
        rs->alloc = rs->nr = 0;
@@ -56,7 +56,7 @@ static void range_set_move(struct range_set *dst, struct range_set *src)
 }
 
 /* tack on a _new_ range _at the end_ */
-static void range_set_append_unsafe(struct range_set *rs, long a, long b)
+void range_set_append_unsafe(struct range_set *rs, long a, long b)
 {
        assert(a <= b);
        range_set_grow(rs, 1);
@@ -65,7 +65,7 @@ static void range_set_append_unsafe(struct range_set *rs, long a, long b)
        rs->nr++;
 }
 
-static void range_set_append(struct range_set *rs, long a, long b)
+void range_set_append(struct range_set *rs, long a, long b)
 {
        assert(rs->nr == 0 || rs->ranges[rs->nr-1].end <= a);
        range_set_append_unsafe(rs, a, b);
@@ -107,7 +107,7 @@ static void range_set_check_invariants(struct range_set *rs)
  * In-place pass of sorting and merging the ranges in the range set,
  * to establish the invariants when we get the ranges from the user
  */
-static void sort_and_merge_range_set(struct range_set *rs)
+void sort_and_merge_range_set(struct range_set *rs)
 {
        int i;
        int o = 0; /* output cursor */
@@ -291,7 +291,6 @@ static void line_log_data_insert(struct line_log_data **list,
 
        if (p) {
                range_set_append_unsafe(&p->ranges, begin, end);
-               sort_and_merge_range_set(&p->ranges);
                free(path);
                return;
        }
@@ -299,7 +298,6 @@ static void line_log_data_insert(struct line_log_data **list,
        p = xcalloc(1, sizeof(struct line_log_data));
        p->path = path;
        range_set_append(&p->ranges, begin, end);
-       sort_and_merge_range_set(&p->ranges);
        if (ip) {
                p->next = ip->next;
                ip->next = p;
@@ -566,12 +564,14 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
        struct nth_line_cb cb_data;
        struct string_list_item *item;
        struct line_log_data *ranges = NULL;
+       struct line_log_data *p;
 
        for_each_string_list_item(item, args) {
                const char *name_part, *range_part;
                char *full_name;
                struct diff_filespec *spec;
                long begin = 0, end = 0;
+               long anchor;
 
                name_part = skip_range_arg(item->string);
                if (!name_part || *name_part != ':' || !name_part[1])
@@ -590,17 +590,23 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
                cb_data.lines = lines;
                cb_data.line_ends = ends;
 
+               p = search_line_log_data(ranges, full_name, NULL);
+               if (p && p->ranges.nr)
+                       anchor = p->ranges.ranges[p->ranges.nr - 1].end + 1;
+               else
+                       anchor = 1;
+
                if (parse_range_arg(range_part, nth_line, &cb_data,
-                                   lines, &begin, &end,
+                                   lines, anchor, &begin, &end,
                                    full_name))
                        die("malformed -L argument '%s'", range_part);
+               if (lines < end || ((lines || begin) && lines < begin))
+                       die("file %s has only %lu lines", name_part, lines);
                if (begin < 1)
                        begin = 1;
                if (end < 1)
                        end = lines;
                begin--;
-               if (lines < end || lines < begin)
-                       die("file %s has only %ld lines", name_part, lines);
                line_log_data_insert(&ranges, full_name, begin, end);
 
                free_filespec(spec);
@@ -608,6 +614,9 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
                ends = NULL;
        }
 
+       for (p = ranges; p; p = p->next)
+               sort_and_merge_range_set(&p->ranges);
+
        return ranges;
 }
 
@@ -751,7 +760,8 @@ void line_log_init(struct rev_info *rev, const char *prefix, struct string_list
                        r = r->next;
                }
                paths[count] = NULL;
-               init_pathspec(&rev->diffopt.pathspec, paths);
+               parse_pathspec(&rev->diffopt.pathspec, 0,
+                              PATHSPEC_PREFER_FULL, "", paths);
                free(paths);
        }
 }