23 files changed, 485 insertions, 130 deletions

@@ -1,4 +1,4 @@
-CGIT_VERSION = v0.8.3.4
+CGIT_VERSION = v0.9
 CGIT_SCRIPT_NAME = cgit.cgi
 CGIT_SCRIPT_PATH = /var/www/htdocs/cgit
 CGIT_DATA_PATH = $(CGIT_SCRIPT_PATH)
@@ -12,7 +12,7 @@ htmldir = $(docdir)
 pdfdir = $(docdir)
 mandir = $(prefix)/share/man
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 1.7.3
+GIT_VER = 1.7.4
 GIT_URL = http://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.bz2
 INSTALL = install
 MAN5_TXT = $(wildcard *.5.txt)
@@ -115,6 +115,7 @@ OBJECTS += ui-stats.o
 OBJECTS += ui-summary.o
 OBJECTS += ui-tag.o
 OBJECTS += ui-tree.o
+OBJECTS += vector.o
 
 ifdef NEEDS_LIBICONV
         EXTLIBS += -liconv
@@ -240,4 +241,4 @@ clean-doc:
         rm -f cgitrc.5 cgitrc.5.html cgitrc.5.pdf cgitrc.5.xml cgitrc.5.fo
 
 get-git:
-        curl $(GIT_URL) | tar -xj && rm -rf git && mv git-$(GIT_VER) git
+        curl $(GIT_URL) | tar -xjf - && rm -rf git && mv git-$(GIT_VER) git
@@ -36,7 +36,7 @@ file (see the Makefile for details).
 
 
 Dependencies:
-  -git 1.5.3
+  -git 1.7.4
   -zip lib
   -crypto lib
   -openssl lib
@@ -86,13 +86,6 @@ The missing features
   repository. This should probably be extended to a generic map between
   submodule path and url.
 
-* Branch- and tag-lists in the summary page can get very long, they should
-  probably only show something like the ten "latest modified" branches and
-  a similar number of "most recent" tags.
-
-* There should be a new page for browsing refs/heads and refs/tags, with links
-  from the summary page whenever the branch/tag lists overflow.
-
 * The log-page should have more/better search options (author, committer,
   pickaxe, paths) and possibly support arbitrary revision specifiers.
 
@@ -29,15 +29,17 @@ void add_mimetype(const char *name, const char *value)
 struct cgit_filter *new_filter(const char *cmd, int extra_args)
 {
         struct cgit_filter *f;
+        int args_size = 0;
 
         if (!cmd || !cmd[0])
                 return NULL;
 
         f = xmalloc(sizeof(struct cgit_filter));
         f->cmd = xstrdup(cmd);
-        f->argv = xmalloc((2 + extra_args) * sizeof(char *));
+        args_size = (2 + extra_args) * sizeof(char *);
+        f->argv = xmalloc(args_size);
+        memset(f->argv, 0, args_size);
         f->argv[0] = f->cmd;
-        f->argv[1] = NULL;
         return f;
 }
 
@@ -57,6 +59,8 @@ void repo_config(struct cgit_repo *repo, const char *name, const char *value)
                 repo->defbranch = xstrdup(value);
         else if (!strcmp(name, "snapshots"))
                 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
+        else if (!strcmp(name, "enable-commit-graph"))
+                repo->enable_commit_graph = ctx.cfg.enable_commit_graph * atoi(value);
         else if (!strcmp(name, "enable-log-filecount"))
                 repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
         else if (!strcmp(name, "enable-log-linecount"))
@@ -71,9 +75,13 @@ void repo_config(struct cgit_repo *repo, const char *name, const char *value)
                 repo->module_link= xstrdup(value);
         else if (!strcmp(name, "section"))
                 repo->section = xstrdup(value);
-        else if (!strcmp(name, "readme") && value != NULL) {
+        else if (!strcmp(name, "readme") && value != NULL)
                 repo->readme = xstrdup(value);
-        } else if (ctx.cfg.enable_filter_overrides) {
+        else if (!strcmp(name, "logo") && value != NULL)
+                repo->logo = xstrdup(value);
+        else if (!strcmp(name, "logo-link") && value != NULL)
+                repo->logo_link = xstrdup(value);
+        else if (ctx.cfg.enable_filter_overrides) {
                 if (!strcmp(name, "about-filter"))
                         repo->about_filter = new_filter(value, 0);
                 else if (!strcmp(name, "commit-filter"))
@@ -143,6 +151,8 @@ void config_cb(const char *name, const char *value)
                 ctx.cfg.enable_http_clone = atoi(value);
         else if (!strcmp(name, "enable-index-links"))
                 ctx.cfg.enable_index_links = atoi(value);
+        else if (!strcmp(name, "enable-commit-graph"))
+                ctx.cfg.enable_commit_graph = atoi(value);
         else if (!strcmp(name, "enable-log-filecount"))
                 ctx.cfg.enable_log_filecount = atoi(value);
         else if (!strcmp(name, "enable-log-linecount"))
@@ -197,6 +207,8 @@ void config_cb(const char *name, const char *value)
                                       ctx.cfg.project_list, repo_config);
                 else
                         scan_tree(expand_macros(value), repo_config);
+        else if (!strcmp(name, "scan-hidden-path"))
+                ctx.cfg.scan_hidden_path = atoi(value);
         else if (!strcmp(name, "section-from-path"))
                 ctx.cfg.section_from_path = atoi(value);
         else if (!strcmp(name, "source-filter"))
@@ -318,6 +330,7 @@ static void prepare_context(struct cgit_context *ctx)
         ctx->cfg.robots = "index, nofollow";
         ctx->cfg.root_title = "Git repository browser";
         ctx->cfg.root_desc = "a fast webinterface for the git dscm";
+        ctx->cfg.scan_hidden_path = 0;
         ctx->cfg.script_name = CGIT_SCRIPT_NAME;
         ctx->cfg.section = "";
         ctx->cfg.summary_branches = 10;
@@ -550,6 +563,8 @@ void print_repo(FILE *f, struct cgit_repo *repo)
                 fprintf(f, "repo.section=%s\n", repo->section);
         if (repo->clone_url)
                 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
+        fprintf(f, "repo.enable-commit-graph=%d\n",
+                repo->enable_commit_graph);
         fprintf(f, "repo.enable-log-filecount=%d\n",
                 repo->enable_log_filecount);
         fprintf(f, "repo.enable-log-linecount=%d\n",
@@ -749,10 +764,11 @@ int main(int argc, const char **argv)
         http_parse_querystring(ctx.qry.raw, querystring_cb);
 
         /* If virtual-root isn't specified in cgitrc, lets pretend
-         * that virtual-root equals SCRIPT_NAME.
+         * that virtual-root equals SCRIPT_NAME, minus any possibly
+         * trailing slashes.
          */
         if (!ctx.cfg.virtual_root)
-                ctx.cfg.virtual_root = ctx.cfg.script_name;
+                ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');
 
         /* If no url parameter is specified on the querystring, lets
          * use PATH_INFO as url. This allows cgit to work with virtual
@@ -153,26 +153,44 @@ table.list td {
         padding: 0.1em 0.5em 0.1em 0.5em;
 }
 
-table.list td.logsubject {
+table.list td.commitgraph {
         font-family: monospace;
-        font-weight: bold;
+        white-space: pre;
 }
 
-table.list td.logmsg {
-        font-family: monospace;
-        white-space: pre;
-        padding: 1em 0.5em 2em 0.5em;
+table.list td.commitgraph .column1 {
+        color: #a00;
+}
+
+table.list td.commitgraph .column2 {
+        color: #0a0;
+}
+
+table.list td.commitgraph .column3 {
+        color: #aa0;
 }
 
-table.list td.lognotes-label {
-        text-align:right;
-        vertical-align:top;
+table.list td.commitgraph .column4 {
+        color: #00a;
 }
 
-table.list td.lognotes {
+table.list td.commitgraph .column5 {
+        color: #a0a;
+}
+
+table.list td.commitgraph .column6 {
+        color: #0aa;
+}
+
+table.list td.logsubject {
+        font-family: monospace;
+        font-weight: bold;
+}
+
+table.list td.logmsg {
         font-family: monospace;
         white-space: pre;
-        padding: 0em 0.5em 2em 0.5em;
+        padding: 0 0.5em;
 }
 
 table.list td a {
@@ -275,7 +293,7 @@ table.blob pre {
         padding: 0; margin: 0;
 }
 
-table.blob a.no {
+table.blob a.no, table.ssdiff a.no {
         color: gray;
         text-align: right;
         text-decoration: none;
@@ -20,6 +20,7 @@
 #include <xdiff/xdiff.h>
 #include <utf8.h>
 #include <notes.h>
+#include <graph.h>
 
 
 /*
@@ -70,7 +71,10 @@ struct cgit_repo {
         char *readme;
         char *section;
         char *clone_url;
+        char *logo;
+        char *logo_link;
         int snapshots;
+        int enable_commit_graph;
         int enable_log_filecount;
         int enable_log_linecount;
         int enable_remote_branches;
@@ -189,6 +193,7 @@ struct cgit_config {
         int enable_gitweb_owner;
         int enable_http_clone;
         int enable_index_links;
+        int enable_commit_graph;
         int enable_log_filecount;
         int enable_log_linecount;
         int enable_remote_branches;
@@ -208,6 +213,7 @@ struct cgit_config {
         int noheader;
         int renamelimit;
         int remove_suffix;
+        int scan_hidden_path;
         int section_from_path;
         int snapshots;
         int summary_branches;
@@ -90,7 +90,12 @@ embedded::
         Flag which, when set to "1", will make cgit generate a html fragment
         suitable for embedding in other html pages. Default value: none. See
         also: "noheader".
-        
+
+enable-commit-graph::
+        Flag which, when set to "1", will make cgit print an ASCII-art commit
+        history graph to the left of the commit messages in the repository
+        log page. Default value: "0".
+
 enable-filter-overrides::
         Flag which, when set to "1", allows all filter settings to be
         overridden in repository-specific cgitrc files. Default value: none.
@@ -274,13 +279,22 @@ root-title::
         Text printed as heading on the repository index page. Default value:
         "Git Repository Browser".
 
+scan-hidden-path::
+        If set to "1" and scan-path is enabled, scan-path will recurse into
+        directories whose name starts with a period ('.'). Otherwise,
+        scan-path will stay away from such directories (considered as
+        "hidden"). Note that this does not apply to the ".git" directory in
+        non-bare repos. This must be defined prior to scan-path.
+        Default value: 0. See also: scan-path.
+
 scan-path::
         A path which will be scanned for repositories. If caching is enabled,
         the result will be cached as a cgitrc include-file in the cache
         directory. If project-list has been defined prior to scan-path,
         scan-path loads only the directories listed in the file pointed to by
-        project-list. Default value: none. See also: cache-scanrc-ttl,
-        project-list.
+        project-list. Be advised that only the global settings taken
+        before the scan-path directive will be applied to each repository.
+        Default value: none. See also: cache-scanrc-ttl, project-list.
 
 section::
         The name of the current repository section - all repositories defined
@@ -300,7 +314,8 @@ side-by-side-diffs::
 snapshots::
         Text which specifies the default set of snapshot formats generated by
         cgit. The value is a space-separated list of zero or more of the
-        values "tar", "tar.gz", "tar.bz2" and "zip". Default value: none.
+        values "tar", "tar.gz", "tar.bz2", "tar.xz" and "zip". Default value:
+        none.
 
 source-filter::
         Specifies a command which will be invoked to format plaintext blobs
@@ -359,6 +374,10 @@ repo.defbranch::
 repo.desc::
         The value to show as repository description. Default value: none.
 
+repo.enable-commit-graph::
+        A flag which can be used to disable the global setting
+        `enable-commit-graph'. Default value: none.
+
 repo.enable-log-filecount::
         A flag which can be used to disable the global setting
         `enable-log-filecount'. Default value: none.
@@ -375,6 +394,15 @@ repo.enable-subject-links::
         A flag which can be used to override the global setting
         `enable-subject-links'. Default value: none.
 
+repo.logo::
+        Url which specifies the source of an image which will be used as a logo
+        on this repo's pages. Default value: global logo.
+
+repo.logo-link::
+        Url loaded when clicking on the cgit logo image. If unspecified the
+        calculated url of the repository index page will be used. Default
+        value: global logo-link.
+
 repo.max-stats::
         Override the default maximum statistics period. Valid values are equal
         to the values specified for the global "max-stats" setting. Default
@@ -446,6 +474,10 @@ css=/css/cgit.css
 enable-index-links=1
 
 
+# Enable ASCII art commit history graph on the log pages
+enable-commit-graph=1
+
+
 # Show number of affected files per commit on the log pages
 enable-log-filecount=1
 
@@ -67,7 +67,8 @@ static void info_fn(struct cgit_context *ctx)
 static void log_fn(struct cgit_context *ctx)
 {
         cgit_print_log(ctx->qry.sha1, ctx->qry.ofs, ctx->cfg.max_commit_count,
-                       ctx->qry.grep, ctx->qry.search, ctx->qry.path, 1);
+                       ctx->qry.grep, ctx->qry.search, ctx->qry.path, 1,
+                       ctx->repo->enable_commit_graph);
 }
 
 static void ls_cache_fn(struct cgit_context *ctx)
-Subproject 87b50542a08ac6caa083ddc376e674424e37940
+Subproject 7ed863a85a6ce2c4ac4476848310b8f917ab41f
@@ -18,7 +18,7 @@ static const char* url_escape_table[256] = {
         "%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07", "%08", "%09",
         "%0a", "%0b", "%0c", "%0d", "%0e", "%0f", "%10", "%11", "%12", "%13",
         "%14", "%15", "%16", "%17", "%18", "%19", "%1a", "%1b", "%1c", "%1d",
-        "%1e", "%1f", "%20", 0, "%22", "%23", 0, "%25", "%26", "%27", 0, 0, 0,
+        "%1e", "%1f", "+", 0, "%22", "%23", 0, "%25", "%26", "%27", 0, 0, 0,
         "%2b", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%3c", "%3d",
         "%3e", "%3f", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
         0, 0, 0, 0, 0, 0, 0, 0, 0, "%5c", 0, "%5e", 0, "%60", 0, 0, 0, 0, 0,
@@ -181,7 +181,7 @@ void html_url_arg(const char *txt)
                 const char *e = url_escape_table[c];
                 if (e) {
                         html_raw(txt, t - txt);
-                        html_raw(e, 3);
+                        html_raw(e, strlen(e));
                         txt = t+1;
                 }
                 t++;
@@ -277,7 +277,7 @@ char *convert_query_hexchar(char *txt)
         d1 = hextoint(*(txt+1));
         d2 = hextoint(*(txt+2));
         if (d1<0 || d2<0) {
-                memmove(txt, txt+3, n-3);
+                memmove(txt, txt+3, n-2);
                 return txt-1;
         } else {
                 *txt = d1 * 16 + d2;
@@ -106,7 +106,11 @@ const char *reencode(char **txt, const char *src_enc, const char *dst_enc)
         if (!txt || !*txt || !src_enc || !dst_enc)
                 return *txt;
 
-        tmp = reencode_string(*txt, src_enc, dst_enc);
+        /* no encoding needed if src_enc equals dst_enc */
+        if(!strcasecmp(src_enc, dst_enc))
+                return *txt;
+
+        tmp = reencode_string(*txt, dst_enc, src_enc);
         if (tmp) {
                 free(*txt);
                 *txt = tmp;
@@ -160,6 +164,10 @@ struct commitinfo *cgit_parse_commit(struct commit *commit)
                 }
         }
 
+        /* if no special encoding is found, assume UTF-8 */
+        if(!ret->msg_encoding)
+                ret->msg_encoding = xstrdup("UTF-8");
+
         // skip unknown header fields
         while (p && *p && (*p != '\n')) {
                 p = strchr(p, '\n');
@@ -189,14 +197,12 @@ struct commitinfo *cgit_parse_commit(struct commit *commit)
         } else
                 ret->subject = xstrdup(p);
 
-        if (ret->msg_encoding) {
-                reencode(&ret->author, PAGE_ENCODING, ret->msg_encoding);
-                reencode(&ret->author_email, PAGE_ENCODING, ret->msg_encoding);
-                reencode(&ret->committer, PAGE_ENCODING, ret->msg_encoding);
-                reencode(&ret->committer_email, PAGE_ENCODING, ret->msg_encoding);
-                reencode(&ret->subject, PAGE_ENCODING, ret->msg_encoding);
-                reencode(&ret->msg, PAGE_ENCODING, ret->msg_encoding);
-        }
+        reencode(&ret->author, ret->msg_encoding, PAGE_ENCODING);
+        reencode(&ret->author_email, ret->msg_encoding, PAGE_ENCODING);
+        reencode(&ret->committer, ret->msg_encoding, PAGE_ENCODING);
+        reencode(&ret->committer_email, ret->msg_encoding, PAGE_ENCODING);
+        reencode(&ret->subject, ret->msg_encoding, PAGE_ENCODING);
+        reencode(&ret->msg, ret->msg_encoding, PAGE_ENCODING);
 
         return ret;
 }
@@ -159,24 +159,23 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn)
 
 static void scan_path(const char *base, const char *path, repo_config_fn fn)
 {
-        DIR *dir;
+        DIR *dir = opendir(path);
         struct dirent *ent;
         char *buf;
         struct stat st;
 
+        if (!dir) {
+                fprintf(stderr, "Error opening directory %s: %s (%d)\n",
+                        path, strerror(errno), errno);
+                return;
+        }
         if (is_git_dir(path)) {
                 add_repo(base, path, fn);
-                return;
+                goto end;
         }
         if (is_git_dir(fmt("%s/.git", path))) {
                 add_repo(base, fmt("%s/.git", path), fn);
-                return;
-        }
-        dir = opendir(path);
-        if (!dir) {
-                fprintf(stderr, "Error opening directory %s: %s (%d)\n",
-                        path, strerror(errno), errno);
-                return;
+                goto end;
         }
         while((ent = readdir(dir)) != NULL) {
                 if (ent->d_name[0] == '.') {
@@ -184,6 +183,8 @@ static void scan_path(const char *base, const char *path, repo_config_fn fn)
                                 continue;
                         if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
                                 continue;
+                        if (!ctx.cfg.scan_hidden_path)
+                                continue;
                 }
                 buf = malloc(strlen(path) + strlen(ent->d_name) + 2);
                 if (!buf) {
@@ -202,6 +203,7 @@ static void scan_path(const char *base, const char *path, repo_config_fn fn)
                         scan_path(base, buf, fn);
                 free(buf);
         }
+end:
         closedir(dir);
 }
 
@@ -217,6 +219,7 @@ void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn
         if (!projects) {
                 fprintf(stderr, "Error opening projectsfile %s: %s (%d)\n",
                         projectsfile, strerror(errno), errno);
+                return;
         }
         while (fgets(line, sizeof(line), projects) != NULL) {
                 for (z = &lastc(line);
@@ -56,6 +56,7 @@ struct cgit_repo *cgit_add_repo(const char *url)
         ret->section = ctx.cfg.section;
         ret->defbranch = "master";
         ret->snapshots = ctx.cfg.snapshots;
+        ret->enable_commit_graph = ctx.cfg.enable_commit_graph;
         ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
         ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
         ret->enable_remote_branches = ctx.cfg.enable_remote_branches;
@@ -34,6 +34,17 @@ static struct fileinfo {
 } *items;
 
 static int use_ssdiff = 0;
+static struct diff_filepair *current_filepair;
+
+struct diff_filespec *cgit_get_current_old_file(void)
+{
+        return current_filepair->one;
+}
+
+struct diff_filespec *cgit_get_current_new_file(void)
+{
+        return current_filepair->two;
+}
 
 static void print_fileinfo(struct fileinfo *info)
 {
@@ -161,8 +172,11 @@ void cgit_print_diffstat(const unsigned char *old_sha1,
         html("<div class='diffstat-header'>");
         cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
                        ctx.qry.sha2, NULL, 0);
-        if (prefix)
-                htmlf(" (limited to '%s')", prefix);
+        if (prefix) {
+                html(" (limited to '");
+                html_txt(prefix);
+                html("')");
+        }
         html(" (");
         ctx.qry.context = (save_context > 0 ? save_context : 3) << 1;
         cgit_self_link("more", NULL, NULL, &ctx);
@@ -284,6 +298,7 @@ static void filepair_cb(struct diff_filepair *pair)
         int binary = 0;
         linediff_fn print_line_fn = print_line;
 
+        current_filepair = pair;
         if (use_ssdiff) {
                 cgit_ssdiff_header_begin();
                 print_line_fn = cgit_ssdiff_line_cb;
@@ -7,4 +7,10 @@ extern void cgit_print_diffstat(const unsigned char *old_sha1,
 extern void cgit_print_diff(const char *new_hex, const char *old_hex,
                             const char *prefix);
 
+extern struct diff_filespec *cgit_get_current_old_file(void);
+extern struct diff_filespec *cgit_get_current_new_file(void);
+
+extern unsigned char old_rev_sha1[20];
+extern unsigned char new_rev_sha1[20];
+
 #endif /* UI_DIFF_H */
@@ -9,9 +9,25 @@
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
+#include "vector.h"
 
 int files, add_lines, rem_lines;
 
+/*
+ * The list of available column colors in the commit graph.
+ */
+static const char *column_colors_html[] = {
+        "<span class='column1'>",
+        "<span class='column2'>",
+        "<span class='column3'>",
+        "<span class='column4'>",
+        "<span class='column5'>",
+        "<span class='column6'>",
+        "</span>",
+};
+
+#define COLUMN_COLORS_HTML_MAX (ARRAY_SIZE(column_colors_html) - 1)
+
 void count_lines(char *line, int size)
 {
         if (size <= 0)
@@ -76,63 +92,160 @@ void show_commit_decorations(struct commit *commit)
         }
 }
 
-void print_commit(struct commit *commit)
+void print_commit(struct commit *commit, struct rev_info *revs)
 {
         struct commitinfo *info;
         char *tmp;
-        int cols = 2;
+        int cols = revs->graph ? 3 : 2;
+        struct strbuf graphbuf = STRBUF_INIT;
+        struct strbuf msgbuf = STRBUF_INIT;
+
+        if (ctx.repo->enable_log_filecount)
+                cols++;
+        if (ctx.repo->enable_log_linecount)
+                cols++;
+
+        if (revs->graph) {
+                /* Advance graph until current commit */
+                while (!graph_next_line(revs->graph, &graphbuf)) {
+                        /* Print graph segment in otherwise empty table row */
+                        html("<tr class='nohover'><td class='commitgraph'>");
+                        html(graphbuf.buf);
+                        htmlf("</td><td colspan='%d' /></tr>\n", cols);
+                        strbuf_setlen(&graphbuf, 0);
+                }
+                /* Current commit's graph segment is now ready in graphbuf */
+        }
 
         info = cgit_parse_commit(commit);
-        htmlf("<tr%s><td>",
-                ctx.qry.showmsg ? " class='logheader'" : "");
-        tmp = fmt("id=%s", sha1_to_hex(commit->object.sha1));
-        tmp = cgit_fileurl(ctx.repo->url, "commit", ctx.qry.vpath, tmp);
-        html_link_open(tmp, NULL, NULL);
-        cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
-        html_link_close();
-        htmlf("</td><td%s>",
-                ctx.qry.showmsg ? " class='logsubject'" : "");
+        htmlf("<tr%s>", ctx.qry.showmsg ? " class='logheader'" : "");
+
+        if (revs->graph) {
+                /* Print graph segment for current commit */
+                html("<td class='commitgraph'>");
+                html(graphbuf.buf);
+                html("</td>");
+                strbuf_setlen(&graphbuf, 0);
+        }
+        else {
+                html("<td>");
+                tmp = fmt("id=%s", sha1_to_hex(commit->object.sha1));
+                tmp = cgit_fileurl(ctx.repo->url, "commit", ctx.qry.vpath, tmp);
+                html_link_open(tmp, NULL, NULL);
+                cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
+                html_link_close();
+                html("</td>");
+        }
+
+        htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");
+        if (ctx.qry.showmsg) {
+                /* line-wrap long commit subjects instead of truncating them */
+                size_t subject_len = strlen(info->subject);
+
+                if (subject_len > ctx.cfg.max_msg_len &&
+                    ctx.cfg.max_msg_len >= 15) {
+                        /* symbol for signaling line-wrap (in PAGE_ENCODING) */
+                        const char wrap_symbol[] = { ' ', 0xE2, 0x86, 0xB5, 0 };
+                        int i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
+
+                        /* Rewind i to preceding space character */
+                        while (i > 0 && !isspace(info->subject[i]))
+                                --i;
+                        if (!i) /* Oops, zero spaces. Reset i */
+                                i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
+
+                        /* add remainder starting at i to msgbuf */
+                        strbuf_add(&msgbuf, info->subject + i, subject_len - i);
+                        strbuf_trim(&msgbuf);
+                        strbuf_add(&msgbuf, "\n\n", 2);
+
+                        /* Place wrap_symbol at position i in info->subject */
+                        strcpy(info->subject + i, wrap_symbol);
+                }
+        }
         cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
                          sha1_to_hex(commit->object.sha1), ctx.qry.vpath, 0);
         show_commit_decorations(commit);
         html("</td><td>");
         html_txt(info->author);
-        if (ctx.repo->enable_log_filecount) {
+
+        if (revs->graph) {
+                html("</td><td>");
+                tmp = fmt("id=%s", sha1_to_hex(commit->object.sha1));
+                tmp = cgit_fileurl(ctx.repo->url, "commit", ctx.qry.vpath, tmp);
+                html_link_open(tmp, NULL, NULL);
+                cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
+                html_link_close();
+        }
+
+        if (ctx.repo->enable_log_filecount || ctx.repo->enable_log_linecount) {
                 files = 0;
                 add_lines = 0;
                 rem_lines = 0;
                 cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
-                html("</td><td>");
-                htmlf("%d", files);
-                if (ctx.repo->enable_log_linecount) {
-                        html("</td><td>");
-                        htmlf("-%d/+%d", rem_lines, add_lines);
-                }
         }
+
+        if (ctx.repo->enable_log_filecount)
+                htmlf("</td><td>%d", files);
+        if (ctx.repo->enable_log_linecount)
+                htmlf("</td><td>-%d/+%d", rem_lines, add_lines);
+
         html("</td></tr>\n");
-        if (ctx.qry.showmsg) {
-                struct strbuf notes = STRBUF_INIT;
-                format_note(NULL, commit->object.sha1, &notes, PAGE_ENCODING, 0);
 
-                if (ctx.repo->enable_log_filecount) {
-                        cols++;
-                        if (ctx.repo->enable_log_linecount)
-                                cols++;
+        if (revs->graph || ctx.qry.showmsg) { /* Print a second table row */
+                html("<tr class='nohover'>");
+
+                if (ctx.qry.showmsg) {
+                        /* Concatenate commit message + notes in msgbuf */
+                        if (info->msg && *(info->msg)) {
+                                strbuf_addstr(&msgbuf, info->msg);
+                                strbuf_addch(&msgbuf, '\n');
+                        }
+                        format_note(NULL, commit->object.sha1, &msgbuf,
+                                    PAGE_ENCODING,
+                                    NOTES_SHOW_HEADER | NOTES_INDENT);
+                        strbuf_addch(&msgbuf, '\n');
+                        strbuf_ltrim(&msgbuf);
                 }
-                htmlf("<tr class='nohover'><td/><td colspan='%d' class='logmsg'>",
-                        cols);
-                html_txt(info->msg);
-                html("</td></tr>\n");
-                if (notes.len != 0) {
-                        html("<tr class='nohover'>");
-                        html("<td class='lognotes-label'>Notes:</td>");
-                        htmlf("<td colspan='%d' class='lognotes'>",
-                                cols);
-                        html_txt(notes.buf);
-                        html("</td></tr>\n");
+
+                if (revs->graph) {
+                        int lines = 0;
+
+                        /* Calculate graph padding */
+                        if (ctx.qry.showmsg) {
+                                /* Count #lines in commit message + notes */
+                                const char *p = msgbuf.buf;
+                                lines = 1;
+                                while ((p = strchr(p, '\n'))) {
+                                        p++;
+                                        lines++;
+                                }
+                        }
+
+                        /* Print graph padding */
+                        html("<td class='commitgraph'>");
+                        while (lines > 0 || !graph_is_commit_finished(revs->graph)) {
+                                if (graphbuf.len)
+                                        html("\n");
+                                strbuf_setlen(&graphbuf, 0);
+                                graph_next_line(revs->graph, &graphbuf);
+                                html(graphbuf.buf);
+                                lines--;
+                        }
+                        html("</td>\n");
                 }
-                strbuf_release(&notes);
+                else
+                        html("<td/>"); /* Empty 'Age' column */
+
+                /* Print msgbuf into remainder of table row */
+                htmlf("<td colspan='%d'%s>\n", cols,
+                        ctx.qry.showmsg ? " class='logmsg'" : "");
+                html_txt(msgbuf.buf);
+                html("</td></tr>\n");
         }
+
+        strbuf_release(&msgbuf);
+        strbuf_release(&graphbuf);
         cgit_free_commitinfo(info);
 }
 
@@ -148,38 +261,94 @@ static const char *disambiguate_ref(const char *ref)
         return ref;
 }
 
+static char *next_token(char **src)
+{
+        char *result;
+
+        if (!src || !*src)
+                return NULL;
+        while (isspace(**src))
+                (*src)++;
+        if (!**src)
+                return NULL;
+        result = *src;
+        while (**src) {
+                if (isspace(**src)) {
+                        **src = '\0';
+                        (*src)++;
+                        break;
+                }
+                (*src)++;
+        }
+        return result;
+}
+
 void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
-                    char *path, int pager)
+                    char *path, int pager, int commit_graph)
 {
         struct rev_info rev;
         struct commit *commit;
-        const char *argv[] = {NULL, NULL, NULL, NULL, NULL};
-        int argc = 2;
+        struct vector vec = VECTOR_INIT(char *);
         int i, columns = 3;
+        char *arg;
+
+        /* First argv is NULL */
+        vector_push(&vec, NULL, 0);
 
         if (!tip)
                 tip = ctx.qry.head;
-
-        argv[1] = disambiguate_ref(tip);
+        tip = disambiguate_ref(tip);
+        vector_push(&vec, &tip, 0);
 
         if (grep && pattern && *pattern) {
+                pattern = xstrdup(pattern);
                 if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
-                    !strcmp(grep, "committer"))
-                        argv[argc++] = fmt("--%s=%s", grep, pattern);
-                if (!strcmp(grep, "range"))
-                        argv[1] = pattern;
+                    !strcmp(grep, "committer")) {
+                        arg = fmt("--%s=%s", grep, pattern);
+                        vector_push(&vec, &arg, 0);
+                }
+                if (!strcmp(grep, "range")) {
+                        /* Split the pattern at whitespace and add each token
+                         * as a revision expression. Do not accept other
+                         * rev-list options. Also, replace the previously
+                         * pushed tip (it's no longer relevant).
+                         */
+                        vec.count--;
+                        while ((arg = next_token(&pattern))) {
+                                if (*arg == '-') {
+                                        fprintf(stderr, "Bad range expr: %s\n",
+                                                arg);
+                                        break;
+                                }
+                                vector_push(&vec, &arg, 0);
+                        }
+                }
+        }
+        if (commit_graph) {
+                static const char *graph_arg = "--graph";
+                static const char *color_arg = "--color";
+                vector_push(&vec, &graph_arg, 0);
+                vector_push(&vec, &color_arg, 0);
+                graph_set_column_colors(column_colors_html,
+                                        COLUMN_COLORS_HTML_MAX);
         }
 
         if (path) {
-                argv[argc++] = "--";
-                argv[argc++] = path;
+                arg = "--";
+                vector_push(&vec, &arg, 0);
+                vector_push(&vec, &path, 0);
         }
+
+        /* Make sure the vector is NULL-terminated */
+        vector_push(&vec, NULL, 0);
+        vec.count--;
+
         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);
+        setup_revisions(vec.count, vec.data, &rev, NULL);
         load_ref_decorations(DECORATE_FULL_REFS);
         rev.show_decorations = 1;
         rev.grep_filter.regflags |= REG_ICASE;
@@ -189,8 +358,12 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
         if (pager)
                 html("<table class='list nowrap'>");
 
-        html("<tr class='nohover'><th class='left'>Age</th>"
-              "<th class='left'>Commit message");
+        html("<tr class='nohover'>");
+        if (commit_graph)
+                html("<th></th>");
+        else
+                html("<th class='left'>Age</th>");
+        html("<th class='left'>Commit message");
         if (pager) {
                 html(" (");
                 cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
@@ -200,13 +373,15 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
                 html(")");
         }
         html("</th><th class='left'>Author</th>");
+        if (commit_graph)
+                html("<th class='left'>Age</th>");
         if (ctx.repo->enable_log_filecount) {
                 html("<th class='left'>Files</th>");
                 columns++;
-                if (ctx.repo->enable_log_linecount) {
-                        html("<th class='left'>Lines</th>");
-                        columns++;
-                }
+        }
+        if (ctx.repo->enable_log_linecount) {
+                html("<th class='left'>Lines</th>");
+                columns++;
         }
         html("</tr>\n");
 
@@ -221,7 +396,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
         }
 
         for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
-                print_commit(commit);
+                print_commit(commit, &rev);
                 free(commit->buffer);
                 commit->buffer = NULL;
                 free_commit_list(commit->parents);
@@ -2,7 +2,8 @@
 #define UI_LOG_H
 
 extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep,
-                           char *pattern, char *path, int pager);
+                           char *pattern, char *path, int pager,
+                           int commit_graph);
 extern void show_commit_decorations(struct commit *commit);
 
 #endif /* UI_LOG_H */
@@ -574,7 +574,7 @@ void cgit_print_http_headers(struct cgit_context *ctx)
         else if (ctx->page.mimetype)
                 htmlf("Content-Type: %s\n", ctx->page.mimetype);
         if (ctx->page.size)
-                htmlf("Content-Length: %ld\n", ctx->page.size);
+                htmlf("Content-Length: %zd\n", ctx->page.size);
         if (ctx->page.filename)
                 htmlf("Content-Disposition: inline; filename=\"%s\"\n",
                       ctx->page.filename);
@@ -756,17 +756,27 @@ static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
 
 static void print_header(struct cgit_context *ctx)
 {
+        char *logo = NULL, *logo_link = NULL;
+
         html("<table id='header'>\n");
         html("<tr>\n");
 
-        if (ctx->cfg.logo && ctx->cfg.logo[0] != 0) {
+        if (ctx->repo && ctx->repo->logo && *ctx->repo->logo)
+                logo = ctx->repo->logo;
+        else
+                logo = ctx->cfg.logo;
+        if (ctx->repo && ctx->repo->logo_link && *ctx->repo->logo_link)
+                logo_link = ctx->repo->logo_link;
+        else
+                logo_link = ctx->cfg.logo_link;
+        if (logo && *logo) {
                 html("<td class='logo' rowspan='2'><a href='");
-                if (ctx->cfg.logo_link)
-                        html_attr(ctx->cfg.logo_link);
+                if (logo_link && *logo_link)
+                        html_attr(logo_link);
                 else
                         html_attr(cgit_rooturl());
                 html("'><img src='");
-                html_attr(ctx->cfg.logo);
+                html_attr(logo);
                 html("' alt='cgit logo'/></a></td>\n");
         }
 
@@ -1,6 +1,7 @@
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
+#include "ui-diff.h"
 
 extern int use_ssdiff;
 
@@ -191,17 +192,24 @@ static void print_ssdiff_line(char *class,
                               char *new_line, int individual_chars)
 {
         char *lcs = NULL;
+
         if (old_line)
                 old_line = replace_tabs(old_line + 1);
         if (new_line)
                 new_line = replace_tabs(new_line + 1);
         if (individual_chars && old_line && new_line)
                 lcs = longest_common_subsequence(old_line, new_line);
-        html("<tr>");
-        if (old_line_no > 0)
-                htmlf("<td class='lineno'>%d</td><td class='%s'>",
-                      old_line_no, class);
-        else if (old_line)
+        html("<tr>\n");
+        if (old_line_no > 0) {
+                struct diff_filespec *old_file = cgit_get_current_old_file();
+                char *lineno_str = fmt("n%d", old_line_no);
+                char *id_str = fmt("%s#%s", is_null_sha1(old_file->sha1)?"HEAD":sha1_to_hex(old_rev_sha1), lineno_str);
+                html("<td class='lineno'><a class='no' href='");
+                html(cgit_fileurl(ctx.repo->url, "tree", old_file->path, id_str));
+                htmlf("' id='%s' name='%s'>%s</a>", lineno_str, lineno_str, lineno_str + 1);
+                html("</td>");
+                htmlf("<td class='%s'>", class);
+        } else if (old_line)
                 htmlf("<td class='lineno'></td><td class='%s'>", class);
         else
                 htmlf("<td class='lineno'></td><td class='%s_dark'>", class);
@@ -212,11 +220,17 @@ static void print_ssdiff_line(char *class,
                         html_txt(old_line);
         }
 
-        html("</td>");
-        if (new_line_no > 0)
-                htmlf("<td class='lineno'>%d</td><td class='%s'>",
-                      new_line_no, class);
-        else if (new_line)
+        html("</td>\n");
+        if (new_line_no > 0) {
+                struct diff_filespec *new_file = cgit_get_current_new_file();
+                char *lineno_str = fmt("n%d", new_line_no);
+                char *id_str = fmt("%s#%s", is_null_sha1(new_file->sha1)?"HEAD":sha1_to_hex(new_rev_sha1), lineno_str);
+                html("<td class='lineno'><a class='no' href='");
+                html(cgit_fileurl(ctx.repo->url, "tree", new_file->path, id_str));
+                htmlf("' id='%s' name='%s'>%s</a>", lineno_str, lineno_str, lineno_str + 1);
+                html("</td>");
+                htmlf("<td class='%s'>", class);
+        } else if (new_line)
                 htmlf("<td class='lineno'></td><td class='%s'>", class);
         else
                 htmlf("<td class='lineno'></td><td class='%s_dark'>", class);
@@ -59,7 +59,7 @@ void cgit_print_summary()
         if (ctx.cfg.summary_log > 0) {
                 html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
                 cgit_print_log(ctx.qry.head, 0, ctx.cfg.summary_log, NULL,
-                               NULL, NULL, 0);
+                               NULL, NULL, 0, 0);
         }
         if (ctx.repo->clone_url)
                 print_urls(ctx.repo->clone_url, NULL);
@@ -48,6 +48,8 @@ static void print_text_buffer(const char *name, char *buf, unsigned long size)
                 cgit_open_filter(ctx.repo->source_filter);
                 html_raw(buf, size);
                 cgit_close_filter(ctx.repo->source_filter);
+                free(ctx.repo->source_filter->argv[1]);
+                ctx.repo->source_filter->argv[1] = NULL;
                 html("</code></pre></td></tr></table>\n");
                 return;
         }
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include "vector.h"
+
+static int grow(struct vector *vec, int gently)
+{
+        size_t new_alloc;
+        void *new_data;
+
+        new_alloc = vec->alloc * 3 / 2;
+        if (!new_alloc)
+                new_alloc = 8;
+        new_data = realloc(vec->data, new_alloc * vec->size);
+        if (!new_data) {
+                if (gently)
+                        return ENOMEM;
+                perror("vector.c:grow()");
+                exit(1);
+        }
+        vec->data = new_data;
+        vec->alloc = new_alloc;
+        return 0;
+}
+
+int vector_push(struct vector *vec, const void *data, int gently)
+{
+        int rc;
+
+        if (vec->count == vec->alloc && (rc = grow(vec, gently)))
+                return rc;
+        if (data)
+                memmove(vec->data + vec->count * vec->size, data, vec->size);
+        else
+                memset(vec->data + vec->count * vec->size, 0, vec->size);
+        vec->count++;
+        return 0;
+}
@@ -0,0 +1,17 @@
+#ifndef CGIT_VECTOR_H
+#define CGIT_VECTOR_H
+
+#include <stdlib.h>
+
+struct vector {
+        size_t size;
+        size_t count;
+        size_t alloc;
+        void *data;
+};
+
+#define VECTOR_INIT(type) {sizeof(type), 0, 0, NULL}
+
+int vector_push(struct vector *vec, const void *data, int gently);
+
+#endif /* CGIT_VECTOR_H */