]> git.cameronkatri.com Git - cgit.git/blobdiff - ui-log.c
ui-shared: fix resource leak: free allocation from cgit_currenturl
[cgit.git] / ui-log.c
index 499534c1a8b359833576392e582aba0d4171986e..0782478d3b6af207e86f0aff068fe7eb212b91fd 100644 (file)
--- a/ui-log.c
+++ b/ui-log.c
@@ -12,7 +12,7 @@
 #include "ui-shared.h"
 #include "argv-array.h"
 
-int files, add_lines, rem_lines;
+static int files, add_lines, rem_lines, lines_counted;
 
 /*
  * The list of available column colors in the commit graph.
@@ -56,41 +56,41 @@ static void inspect_files(struct diff_filepair *pair)
 
 void show_commit_decorations(struct commit *commit)
 {
-       struct name_decoration *deco;
+       const struct name_decoration *deco;
        static char buf[1024];
 
        buf[sizeof(buf) - 1] = 0;
-       deco = lookup_decoration(&name_decoration, &commit->object);
+       deco = get_name_decoration(&commit->object);
        html("<span class='decoration'>");
        while (deco) {
-               if (!prefixcmp(deco->name, "refs/heads/")) {
+               if (starts_with(deco->name, "refs/heads/")) {
                        strncpy(buf, deco->name + 11, sizeof(buf) - 1);
                        cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
                                      ctx.qry.vpath, 0, NULL, NULL,
-                                     ctx.qry.showmsg);
+                                     ctx.qry.showmsg, 0);
                }
-               else if (!prefixcmp(deco->name, "tag: refs/tags/")) {
+               else if (starts_with(deco->name, "tag: refs/tags/")) {
                        strncpy(buf, deco->name + 15, sizeof(buf) - 1);
-                       cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
+                       cgit_tag_link(buf, NULL, "tag-deco", buf);
                }
-               else if (!prefixcmp(deco->name, "refs/tags/")) {
+               else if (starts_with(deco->name, "refs/tags/")) {
                        strncpy(buf, deco->name + 10, sizeof(buf) - 1);
-                       cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
+                       cgit_tag_link(buf, NULL, "tag-deco", buf);
                }
-               else if (!prefixcmp(deco->name, "refs/remotes/")) {
+               else if (starts_with(deco->name, "refs/remotes/")) {
                        if (!ctx.repo->enable_remote_branches)
                                goto next;
                        strncpy(buf, deco->name + 13, sizeof(buf) - 1);
                        cgit_log_link(buf, NULL, "remote-deco", NULL,
                                      sha1_to_hex(commit->object.sha1),
                                      ctx.qry.vpath, 0, NULL, NULL,
-                                     ctx.qry.showmsg);
+                                     ctx.qry.showmsg, 0);
                }
                else {
                        strncpy(buf, deco->name, sizeof(buf) - 1);
                        cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
                                         sha1_to_hex(commit->object.sha1),
-                                        ctx.qry.vpath, 0);
+                                        ctx.qry.vpath);
                }
 next:
                deco = deco->next;
@@ -98,6 +98,74 @@ next:
        html("</span>");
 }
 
+static void handle_rename(struct diff_filepair *pair)
+{
+       /*
+        * After we have seen a rename, we generate links to the previous
+        * name of the file so that commit & diff views get fed the path
+        * that is correct for the commit they are showing, avoiding the
+        * need to walk the entire history leading back to every commit we
+        * show in order detect renames.
+        */
+       if (0 != strcmp(ctx.qry.vpath, pair->two->path)) {
+               free(ctx.qry.vpath);
+               ctx.qry.vpath = xstrdup(pair->two->path);
+       }
+       inspect_files(pair);
+}
+
+static int show_commit(struct commit *commit, struct rev_info *revs)
+{
+       struct commit_list *parents = commit->parents;
+       struct commit *parent;
+       int found = 0, saved_fmt;
+       unsigned saved_flags = revs->diffopt.flags;
+
+
+       /* Always show if we're not in "follow" mode with a single file. */
+       if (!ctx.qry.follow)
+               return 1;
+
+       /*
+        * In "follow" mode, we don't show merges.  This is consistent with
+        * "git log --follow -- <file>".
+        */
+       if (parents && parents->next)
+               return 0;
+
+       /*
+        * If this is the root commit, do what rev_info tells us.
+        */
+       if (!parents)
+               return revs->show_root_diff;
+
+       /* When we get here we have precisely one parent. */
+       parent = parents->item;
+       parse_commit(parent);
+
+       files = 0;
+       add_lines = 0;
+       rem_lines = 0;
+
+       DIFF_OPT_SET(&revs->diffopt, RECURSIVE);
+       diff_tree_sha1(parent->tree->object.sha1,
+                      commit->tree->object.sha1,
+                      "", &revs->diffopt);
+       diffcore_std(&revs->diffopt);
+
+       found = !diff_queue_is_empty();
+       saved_fmt = revs->diffopt.output_format;
+       revs->diffopt.output_format = DIFF_FORMAT_CALLBACK;
+       revs->diffopt.format_callback = cgit_diff_tree_cb;
+       revs->diffopt.format_callback_data = handle_rename;
+       diff_flush(&revs->diffopt);
+       revs->diffopt.output_format = saved_fmt;
+       revs->diffopt.flags = saved_flags;
+
+       lines_counted = 1;
+       return found;
+}
+
 static void print_commit(struct commit *commit, struct rev_info *revs)
 {
        struct commitinfo *info;
@@ -165,7 +233,7 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
                }
        }
        cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
-                        sha1_to_hex(commit->object.sha1), ctx.qry.vpath, 0);
+                        sha1_to_hex(commit->object.sha1), ctx.qry.vpath);
        show_commit_decorations(commit);
        html("</td><td>");
        cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");
@@ -177,7 +245,8 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
                cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
        }
 
-       if (ctx.repo->enable_log_filecount || ctx.repo->enable_log_linecount) {
+       if (!lines_counted && (ctx.repo->enable_log_filecount ||
+                              ctx.repo->enable_log_linecount)) {
                files = 0;
                add_lines = 0;
                rem_lines = 0;
@@ -249,11 +318,11 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
 
 static const char *disambiguate_ref(const char *ref, int *must_free_result)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        struct strbuf longref = STRBUF_INIT;
 
        strbuf_addf(&longref, "refs/heads/%s", ref);
-       if (get_sha1(longref.buf, sha1) == 0) {
+       if (get_sha1(longref.buf, oid.hash) == 0) {
                *must_free_result = 1;
                return strbuf_detach(&longref, NULL);
        }
@@ -325,7 +394,17 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
                        }
                }
        }
-       if (commit_graph) {
+
+       if (!path || !ctx.cfg.enable_follow_links) {
+               /*
+                * If we don't have a path, "follow" is a no-op so make sure
+                * the variable is set to false to avoid needing to check
+                * both this and whether we have a path everywhere.
+                */
+               ctx.qry.follow = 0;
+       }
+
+       if (commit_graph && !ctx.qry.follow) {
                argv_array_push(&rev_argv, "--graph");
                argv_array_push(&rev_argv, "--color");
                graph_set_column_colors(column_colors_html,
@@ -337,25 +416,36 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
        else if (commit_sort == 2)
                argv_array_push(&rev_argv, "--topo-order");
 
-       if (path) {
-               argv_array_push(&rev_argv, "--");
+       if (path && ctx.qry.follow)
+               argv_array_push(&rev_argv, "--follow");
+       argv_array_push(&rev_argv, "--");
+       if (path)
                argv_array_push(&rev_argv, path);
-       }
 
        init_revisions(&rev, NULL);
        rev.abbrev = DEFAULT_ABBREV;
        rev.commit_format = CMIT_FMT_DEFAULT;
        rev.verbose_header = 1;
        rev.show_root_diff = 0;
+       rev.ignore_missing = 1;
+       rev.simplify_history = 1;
        setup_revisions(rev_argv.argc, rev_argv.argv, &rev, NULL);
        load_ref_decorations(DECORATE_FULL_REFS);
        rev.show_decorations = 1;
        rev.grep_filter.regflags |= REG_ICASE;
+
+       rev.diffopt.detect_rename = 1;
+       rev.diffopt.rename_limit = ctx.cfg.renamelimit;
+       if (ctx.qry.ignorews)
+               DIFF_XDL_SET(&rev.diffopt, IGNORE_WHITESPACE);
+
        compile_grep_patterns(&rev.grep_filter);
        prepare_revision_walk(&rev);
 
-       if (pager)
+       if (pager) {
+               cgit_print_layout_start();
                html("<table class='list nowrap'>");
+       }
 
        html("<tr class='nohover'>");
        if (commit_graph)
@@ -368,11 +458,12 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
                cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
                              NULL, ctx.qry.head, ctx.qry.sha1,
                              ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
-                             ctx.qry.search, ctx.qry.showmsg ? 0 : 1);
+                             ctx.qry.search, ctx.qry.showmsg ? 0 : 1,
+                             ctx.qry.follow);
                html(")");
        }
        html("</th><th class='left'>Author</th>");
-       if (commit_graph)
+       if (rev.graph)
                html("<th class='left'>Age</th>");
        if (ctx.repo->enable_log_filecount) {
                html("<th class='left'>Files</th>");
@@ -387,17 +478,32 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
        if (ofs<0)
                ofs = 0;
 
-       for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; i++) {
-               free(commit->buffer);
-               commit->buffer = NULL;
+       for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; /* nop */) {
+               if (show_commit(commit, &rev))
+                       i++;
+               free_commit_buffer(commit);
                free_commit_list(commit->parents);
                commit->parents = NULL;
        }
 
-       for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
-               print_commit(commit, &rev);
-               free(commit->buffer);
-               commit->buffer = NULL;
+       for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; /* nop */) {
+               /*
+                * In "follow" mode, we must count the files and lines the
+                * first time we invoke diff on a given commit, and we need
+                * to do that to see if the commit touches the path we care
+                * about, so we do it in show_commit.  Hence we must clear
+                * lines_counted here.
+                *
+                * This has the side effect of avoiding running diff twice
+                * when we are both following renames and showing file
+                * and/or line counts.
+                */
+               lines_counted = 0;
+               if (show_commit(commit, &rev)) {
+                       i++;
+                       print_commit(commit, &rev);
+               }
+               free_commit_buffer(commit);
                free_commit_list(commit->parents);
                commit->parents = NULL;
        }
@@ -408,7 +514,8 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
                        cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
                                      ctx.qry.sha1, ctx.qry.vpath,
                                      ofs - cnt, ctx.qry.grep,
-                                     ctx.qry.search, ctx.qry.showmsg);
+                                     ctx.qry.search, ctx.qry.showmsg,
+                                     ctx.qry.follow);
                        html("</li>");
                }
                if ((commit = get_revision(&rev)) != NULL) {
@@ -416,14 +523,17 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
                        cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
                                      ctx.qry.sha1, ctx.qry.vpath,
                                      ofs + cnt, ctx.qry.grep,
-                                     ctx.qry.search, ctx.qry.showmsg);
+                                     ctx.qry.search, ctx.qry.showmsg,
+                                     ctx.qry.follow);
                        html("</li>");
                }
                html("</ul>");
+               cgit_print_layout_end();
        } else if ((commit = get_revision(&rev)) != NULL) {
                htmlf("<tr class='nohover'><td colspan='%d'>", columns);
                cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
-                             ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg);
+                             ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg,
+                             ctx.qry.follow);
                html("</td></tr>\n");
        }