Add log filtering by path and link to it from tree view

This enables path-filtering in log-view, and adds a link per entry in
tree-view to show the log for each file/directory.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

6 files changed, 37 insertions, 13 deletions

diff --git a/cgit.c b/cgit.c
index 3d85a08..9e63d18 100644
--- a/cgit.c
+++ b/cgit.c
@@ -79,67 +79,68 @@ static void cgit_print_repo_page(struct cacheitem *item)
         show_search = 0;
         setenv("GIT_DIR", cgit_repo->path, 1);
 
         if (cgit_query_page) {
             if (cgit_repo->snapshots && !strcmp(cgit_query_page, "snapshot")) {
                 cgit_print_snapshot(item, cgit_query_sha1, "zip", 
                                     cgit_repo->url, cgit_query_name);
                 return;
             }
             if (!strcmp(cgit_query_page, "blob")) {
                     cgit_print_blob(item, cgit_query_sha1, cgit_query_path);
                     return;
             }
         }
 
         if (cgit_query_page && !strcmp(cgit_query_page, "log"))
                 show_search = 1;
 
         cgit_print_docstart(title, item);
 
 
         if (!cgit_query_page) {
                 cgit_print_pageheader("summary", show_search);
                 cgit_print_summary();
                 cgit_print_docend();
                 return;
         }
 
         cgit_print_pageheader(cgit_query_page, show_search);
 
         if (!strcmp(cgit_query_page, "log")) {
                 cgit_print_log(cgit_query_head, cgit_query_ofs,
-                               cgit_max_commit_count, cgit_query_search);
+                               cgit_max_commit_count, cgit_query_search,
+                               cgit_query_path);
         } else if (!strcmp(cgit_query_page, "tree")) {
-                cgit_print_tree(cgit_query_sha1, cgit_query_path);
+                cgit_print_tree(cgit_query_head, cgit_query_sha1, cgit_query_path);
         } else if (!strcmp(cgit_query_page, "commit")) {
                 cgit_print_commit(cgit_query_sha1);
         } else if (!strcmp(cgit_query_page, "view")) {
                 cgit_print_view(cgit_query_sha1, cgit_query_path);
         } else if (!strcmp(cgit_query_page, "diff")) {
                 cgit_print_diff(cgit_query_sha1, cgit_query_sha2, cgit_query_path);
         } else {
                 cgit_print_error("Invalid request");
         }
         cgit_print_docend();
 }
 
 static void cgit_fill_cache(struct cacheitem *item, int use_cache)
 {
         static char buf[PATH_MAX];
         int stdout2;
 
         getcwd(buf, sizeof(buf));
         item->st.st_mtime = time(NULL);
 
         if (use_cache) {
                 stdout2 = chk_positive(dup(STDOUT_FILENO), 
                                        "Preserving STDOUT");
                 chk_zero(close(STDOUT_FILENO), "Closing STDOUT");
                 chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
         }
 
         if (cgit_query_repo)
                 cgit_print_repo_page(item);
         else
                 cgit_print_repolist(item);
 
diff --git a/cgit.css b/cgit.css
index fe0ba50..6231e28 100644
--- a/cgit.css
+++ b/cgit.css
@@ -160,64 +160,69 @@ td#archivelist table th {
 }
 
 td#content {
         padding: 1em 0.5em;
 }
 
 div#blob {
         border: solid 1px black;
 }
 
 div.error {
         color: red;
         font-weight: bold;
         margin: 1em 2em;
 }
 
 td.ls-blob, td.ls-dir, td.ls-mod {
         font-family: monospace;
 }
 
 div.ls-dir a {
         font-weight: bold;
 }
 
 th.filesize, td.filesize {
         text-align: right;
 }
 
 td.filesize {
         font-family: monospace;
 }
 
+td.links {
+        font-size: 80%;
+        padding-left: 2em;
+}
+
 td.filemode {
         font-family: monospace;
 }
 
 td.blob {
         white-space: pre;
         font-family: monospace;
         background-color: white;
 }
 
 table.nowrap td {
         white-space: nowrap;
 }
 
 table.commit-info {
         border-collapse: collapse;
         margin-top: 1.5em;
 }
 
 table.commit-info th {
         text-align: left;
         font-weight: normal;
         padding: 0.1em 1em 0.1em 0.1em;
 }
 
 table.commit-info td {
         font-weight: normal;
         padding: 0.1em 1em 0.1em 0.1em;
 }
 
 div.commit-subject {
         font-weight: bold;
diff --git a/cgit.h b/cgit.h
index 93699b5..0fff7b0 100644
--- a/cgit.h
+++ b/cgit.h
@@ -140,43 +140,43 @@ extern void html_attr(char *txt);
 extern void html_hidden(char *name, char *value);
 extern void html_link_open(char *url, char *title, char *class);
 extern void html_link_close(void);
 extern void html_filemode(unsigned short mode);
 
 extern int cgit_read_config(const char *filename, configfn fn);
 extern int cgit_parse_query(char *txt, configfn fn);
 extern struct commitinfo *cgit_parse_commit(struct commit *commit);
 extern struct taginfo *cgit_parse_tag(struct tag *tag);
 
 extern char *cache_safe_filename(const char *unsafe);
 extern int cache_lock(struct cacheitem *item);
 extern int cache_unlock(struct cacheitem *item);
 extern int cache_cancel_lock(struct cacheitem *item);
 extern int cache_exist(struct cacheitem *item);
 extern int cache_expired(struct cacheitem *item);
 
 extern char *cgit_repourl(const char *reponame);
 extern char *cgit_pageurl(const char *reponame, const char *pagename, 
                           const char *query);
 
 extern void cgit_print_error(char *msg);
 extern void cgit_print_date(unsigned long secs);
 extern void cgit_print_docstart(char *title, struct cacheitem *item);
 extern void cgit_print_docend();
 extern void cgit_print_pageheader(char *title, int show_search);
 extern void cgit_print_snapshot_start(const char *mimetype, 
                                       const char *filename, 
                                       struct cacheitem *item);
 
 extern void cgit_print_repolist(struct cacheitem *item);
 extern void cgit_print_summary();
-extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep);
+extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *path);
 extern void cgit_print_view(const char *hex, char *path);
 extern void cgit_print_blob(struct cacheitem *item, const char *hex, char *path);
-extern void cgit_print_tree(const char *hex, char *path);
+extern void cgit_print_tree(const char *rev, const char *hex, char *path);
 extern void cgit_print_commit(const char *hex);
 extern void cgit_print_diff(const char *old_hex, const char *new_hex, char *path);
 extern void cgit_print_snapshot(struct cacheitem *item, const char *hex, 
                                 const char *format, const char *prefix,
                                 const char *filename);
 
 #endif /* CGIT_H */
diff --git a/ui-commit.c b/ui-commit.c
index b3d1c28..20a7cb2 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -157,65 +157,66 @@ void cgit_print_commit(const char *hex)
         unsigned char sha1[20];
         char *query;
         char *filename;
         int i;
 
         if (get_sha1(hex, sha1)) {
                 cgit_print_error(fmt("Bad object id: %s", hex));
                 return;
         }
         commit = lookup_commit_reference(sha1);
         if (!commit) {
                 cgit_print_error(fmt("Bad commit reference: %s", hex));
                 return;
         }
         info = cgit_parse_commit(commit);
 
         html("<table class='commit-info'>\n");
         html("<tr><th>author</th><td>");
         html_txt(info->author);
         html(" ");
         html_txt(info->author_email);
         html("</td><td class='right'>");
         cgit_print_date(info->author_date);
         html("</td></tr>\n");
         html("<tr><th>committer</th><td>");
         html_txt(info->committer);
         html(" ");
         html_txt(info->committer_email);
         html("</td><td class='right'>");
         cgit_print_date(info->committer_date);
         html("</td></tr>\n");
         html("<tr><th>tree</th><td colspan='2' class='sha1'><a href='");
-        query = fmt("id=%s", sha1_to_hex(commit->tree->object.sha1));
+        query = fmt("h=%s&id=%s", sha1_to_hex(commit->object.sha1),
+                    sha1_to_hex(commit->tree->object.sha1));
         html_attr(cgit_pageurl(cgit_query_repo, "tree", query));
         htmlf("'>%s</a></td></tr>\n", sha1_to_hex(commit->tree->object.sha1));
               for (p = commit->parents; p ; p = p->next) {
                 parent = lookup_commit_reference(p->item->object.sha1);
                 if (!parent) {
                         html("<tr><td colspan='3'>");
                         cgit_print_error("Error reading parent commit");
                         html("</td></tr>");
                         continue;
                 }
                 html("<tr><th>parent</th>"
                      "<td colspan='2' class='sha1'>"
                      "<a href='");
                 query = fmt("id=%s", sha1_to_hex(p->item->object.sha1));
                 html_attr(cgit_pageurl(cgit_query_repo, "commit", query));
                 htmlf("'>%s</a> (<a href='",
                       sha1_to_hex(p->item->object.sha1));
                 query = fmt("id=%s&id2=%s", sha1_to_hex(parent->tree->object.sha1),
                             sha1_to_hex(commit->tree->object.sha1));
                 html_attr(cgit_pageurl(cgit_query_repo, "diff", query));
                 html("'>diff</a>)</td></tr>");
         }
         if (cgit_repo->snapshots) {
                 htmlf("<tr><th>download</th><td colspan='2' class='sha1'><a href='");
                 filename = fmt("%s-%s.zip", cgit_query_repo, hex);
                 html_attr(cgit_pageurl(cgit_query_repo, "snapshot",
                                        fmt("id=%s&name=%s", hex, filename)));
                 htmlf("'>%s</a></td></tr>", filename);
         }
         html("</table>\n");
         html("<div class='commit-subject'>");
         html_txt(info->subject);
diff --git a/ui-log.c b/ui-log.c
index 7d1985e..6d5509b 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -24,74 +24,78 @@ void inspect_files(struct diff_filepair *pair)
 
 void print_commit(struct commit *commit)
 {
         char buf[32];
         struct commitinfo *info;
         struct tm *time;
 
         info = cgit_parse_commit(commit);
         time = gmtime(&commit->date);
         html("<tr><td>");
         strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M", time);
         html_txt(buf);
         html("</td><td>");
         char *qry = fmt("id=%s", sha1_to_hex(commit->object.sha1));
         char *url = cgit_pageurl(cgit_query_repo, "commit", qry);
         html_link_open(url, NULL, NULL);
         html_ntxt(cgit_max_msg_len, info->subject);
         html_link_close();
         files = 0;
         lines = 0;
         cgit_diff_commit(commit, inspect_files);
         html("</td><td class='right'>");
         htmlf("%d", files);
         html("</td><td class='right'>");
         htmlf("%d", lines);
         html("</td><td>");
         html_txt(info->author);
         html("</td></tr>\n");
         cgit_free_commitinfo(info);
 }
 
 
-void cgit_print_log(const char *tip, int ofs, int cnt, char *grep)
+void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *path)
 {
         struct rev_info rev;
         struct commit *commit;
-        const char *argv[3] = {NULL, tip, NULL};
+        const char *argv[] = {NULL, tip, NULL, NULL, NULL};
         int argc = 2;
         int i;
 
         if (grep)
                 argv[argc++] = fmt("--grep=%s", grep);
+        if (path) {
+                argv[argc++] = "--";
+                argv[argc++] = path;
+        }
         init_revisions(&rev, NULL);
         rev.abbrev = DEFAULT_ABBREV;
         rev.commit_format = CMIT_FMT_DEFAULT;
         rev.verbose_header = 1;
         rev.show_root_diff = 0;
         setup_revisions(argc, argv, &rev, NULL);
         if (rev.grep_filter) {
                 rev.grep_filter->regflags |= REG_ICASE;
                 compile_grep_patterns(rev.grep_filter);
         }
         prepare_revision_walk(&rev);
 
         html("<table class='list nowrap'>");
         html("<tr class='nohover'><th class='left'>Date</th>"
              "<th class='left'>Message</th>"
              "<th class='left'>Files</th>"
              "<th class='left'>Lines</th>"
              "<th class='left'>Author</th></tr>\n");
 
         if (ofs<0)
                 ofs = 0;
 
         for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; i++) {
                 free(commit->buffer);
                 commit->buffer = NULL;
                 free_commit_list(commit->parents);
                 commit->parents = NULL;
         }
 
         for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
                 print_commit(commit);
                 free(commit->buffer);
diff --git a/ui-tree.c b/ui-tree.c
index dee8309..db63e13 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -1,81 +1,94 @@
 /* ui-tree.c: functions for tree output
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
+char *curr_rev;
 
-static int print_entry(const unsigned char *sha1, const char *base, 
-                       int baselen, const char *pathname, unsigned int mode, 
+static int print_entry(const unsigned char *sha1, const char *base,
+                       int baselen, const char *pathname, unsigned int mode,
                        int stage)
 {
         char *name;
         enum object_type type;
         unsigned long size = 0;
 
         name = xstrdup(pathname);
         type = sha1_object_info(sha1, &size);
         if (type == OBJ_BAD && !S_ISDIRLNK(mode)) {
                 htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
                       name,
                       sha1_to_hex(sha1));
                 return 0;
         }
         html("<tr><td class='filemode'>");
         html_filemode(mode);
         html("</td><td ");
         if (S_ISDIRLNK(mode)) {
                 htmlf("class='ls-mod'><a href='");
                 html_attr(fmt(cgit_repo->module_link,
                               name,
                               sha1_to_hex(sha1)));
         } else if (S_ISDIR(mode)) {
                 html("class='ls-dir'><a href='");
-                html_attr(cgit_pageurl(cgit_query_repo, "tree", 
-                                       fmt("id=%s&path=%s%s/", 
+                html_attr(cgit_pageurl(cgit_query_repo, "tree",
+                                       fmt("h=%s&id=%s&path=%s%s/",
+                                           curr_rev,
                                            sha1_to_hex(sha1),
                                            cgit_query_path ? cgit_query_path : "",
                                            pathname)));
         } else {
                 html("class='ls-blob'><a href='");
                 html_attr(cgit_pageurl(cgit_query_repo, "view",
-                                      fmt("id=%s&path=%s%s", sha1_to_hex(sha1),
+                                      fmt("h=%s&id=%s&path=%s%s", curr_rev,
+                                          sha1_to_hex(sha1),
                                           cgit_query_path ? cgit_query_path : "",
                                           pathname)));
         }
         htmlf("'>%s</a></div></td>", name);
         htmlf("<td class='filesize'>%li</td>", size);
+
+        html("<td class='links'><a href='");
+        html_attr(cgit_pageurl(cgit_query_repo, "log",
+                               fmt("h=%s&path=%s%s",
+                                   curr_rev,
+                                   cgit_query_path ? cgit_query_path : "",
+                                   pathname)));
+        html("'>history</a></td>");
         html("</tr>\n");
         free(name);
         return 0;
 }
 
-void cgit_print_tree(const char *hex, char *path)
+void cgit_print_tree(const char *rev, const char *hex, char *path)
 {
         struct tree *tree;
         unsigned char sha1[20];
 
+        curr_rev = xstrdup(rev);
         if (get_sha1_hex(hex, sha1)) {
                 cgit_print_error(fmt("Invalid object id: %s", hex));
                 return;
         }
         tree = parse_tree_indirect(sha1);
         if (!tree) {
                 cgit_print_error(fmt("Not a tree object: %s", hex));
                 return;
         }
 
         html_txt(path);
         html("<table class='list'>\n");
         html("<tr class='nohover'>");
         html("<th class='left'>Mode</th>");
         html("<th class='left'>Name</th>");
         html("<th class='right'>Size</th>");
+        html("<th/>");
         html("</tr>\n");
         read_tree_recursive(tree, "", 0, 1, NULL, print_entry);
         html("</table>\n");
 }