Add generic support for search box in page header

This adds the ability to show a search box in any pageheader with correct href and
hidden form data, but does not enable the box on any pages.

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

7 files changed, 51 insertions, 5 deletions

diff --git a/cgit.c b/cgit.c
index ac43441..277b849 100644
--- a/cgit.c
+++ b/cgit.c
@@ -1,160 +1,160 @@
 /* cgit.c: cgi for the git scm
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 const char cgit_version[] = CGIT_VERSION;
 
 static void cgit_print_repo_page(struct cacheitem *item)
 {
         if (chdir(fmt("%s/%s", cgit_root, cgit_query_repo)) || 
             cgit_read_config("info/cgit", cgit_repo_config_cb)) {
                 char *title = fmt("%s - %s", cgit_root_title, "Bad request");
                 cgit_print_docstart(title, item);
-                cgit_print_pageheader(title);
+                cgit_print_pageheader(title, 0);
                 cgit_print_error(fmt("Unable to scan repository: %s",
                                      strerror(errno)));
                 cgit_print_docend();
                 return;
         }
         setenv("GIT_DIR", fmt("%s/%s", cgit_root, cgit_query_repo), 1);
         char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc);
         cgit_print_docstart(title, item);
-        cgit_print_pageheader(title);
+        cgit_print_pageheader(title, 0);
         if (!cgit_query_page) {
                 cgit_print_summary();
         } else if (!strcmp(cgit_query_page, "log")) {
                 cgit_print_log(cgit_query_head, cgit_query_ofs, 100);
         } else if (!strcmp(cgit_query_page, "tree")) {
                 cgit_print_tree(cgit_query_sha1);
         } 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);
         } else if (!strcmp(cgit_query_page, "diff")) {
                 cgit_print_diff(cgit_query_sha1, cgit_query_sha2);
         }
         cgit_print_docend();
 }
 
 static void cgit_fill_cache(struct cacheitem *item)
 {
         static char buf[PATH_MAX];
 
         getcwd(buf, sizeof(buf));
         htmlfd = item->fd;
         item->st.st_mtime = time(NULL);
         if (cgit_query_repo)
                 cgit_print_repo_page(item);
         else
                 cgit_print_repolist(item);
         chdir(buf);
 }
 
 static void cgit_check_cache(struct cacheitem *item)
 {
         int i = 0;
 
         cache_prepare(item);
  top:
         if (++i > cgit_max_lock_attempts) {
                 die("cgit_refresh_cache: unable to lock %s: %s",
                     item->name, strerror(errno));
         }
         if (!cache_exist(item)) {
                 if (!cache_lock(item)) {
                         sleep(1);
                         goto top;
                 }
                 if (!cache_exist(item)) {
                         cgit_fill_cache(item);
                         cache_unlock(item);
                 } else {
                         cache_cancel_lock(item);
                 }
         } else if (cache_expired(item) && cache_lock(item)) {
                 if (cache_expired(item)) {
                         cgit_fill_cache(item);
                         cache_unlock(item);
                 } else {
                         cache_cancel_lock(item);
                 }
         }
 }
 
 static void cgit_print_cache(struct cacheitem *item)
 {
         static char buf[4096];
         ssize_t i;
 
         int fd = open(item->name, O_RDONLY);
         if (fd<0)
                 die("Unable to open cached file %s", item->name);
 
         while((i=read(fd, buf, sizeof(buf))) > 0)
                 write(STDOUT_FILENO, buf, i);
 
         close(fd);
 }
 
 static void cgit_parse_args(int argc, const char **argv)
 {
         int i;
 
         for (i = 1; i < argc; i++) {
                 if (!strncmp(argv[i], "--root=", 7)) {
                         cgit_root = xstrdup(argv[i]+7);
                 }
                 if (!strncmp(argv[i], "--cache=", 8)) {
                         cgit_cache_root = xstrdup(argv[i]+8);
                 }
                 if (!strcmp(argv[i], "--nocache")) {
                         cgit_nocache = 1;
                 }
                 if (!strncmp(argv[i], "--query=", 8)) {
                         cgit_querystring = xstrdup(argv[i]+8);
                 }
                 if (!strncmp(argv[i], "--repo=", 7)) {
                         cgit_query_repo = xstrdup(argv[i]+7);
                 }
                 if (!strncmp(argv[i], "--page=", 7)) {
                         cgit_query_page = xstrdup(argv[i]+7);
                 }
                 if (!strncmp(argv[i], "--head=", 7)) {
                         cgit_query_head = xstrdup(argv[i]+7);
                         cgit_query_has_symref = 1;
                 }
                 if (!strncmp(argv[i], "--sha1=", 7)) {
                         cgit_query_sha1 = xstrdup(argv[i]+7);
                         cgit_query_has_sha1 = 1;
                 }
                 if (!strncmp(argv[i], "--ofs=", 6)) {
                         cgit_query_ofs = atoi(argv[i]+6);
                 }
         }
 }
 
 int main(int argc, const char **argv)
 {
         struct cacheitem item;
 
         cgit_read_config("/etc/cgitrc", cgit_global_config_cb);
         if (getenv("QUERY_STRING"))
                 cgit_querystring = xstrdup(getenv("QUERY_STRING"));
         cgit_parse_args(argc, argv);
         cgit_parse_query(cgit_querystring, cgit_querystring_cb);
 
         if (cgit_nocache) {
                 item.fd = STDOUT_FILENO;
                 cgit_fill_cache(&item);
         } else {
                 cgit_check_cache(&item);
                 cgit_print_cache(&item);
         }
         return 0;
 }
diff --git a/cgit.css b/cgit.css
index 459dca7..9112bfe 100644
--- a/cgit.css
+++ b/cgit.css
@@ -1,191 +1,196 @@
 body {
         font-family: arial;
         font-size: normal;
         background: white;
         padding: 0em;
         margin: 0.5em 1em;
 }
 
 
 h2 {
         font-size: 100%;
         font-weight: bold;
         margin-bottom: 0.1em;
 }
 
 a {
         color: blue;
         text-decoration: none;
 }
 
 a:hover {
         text-decoration: underline;
 }
 
 table.list {
         border: solid 1px black;
         border-collapse: collapse;
         border: solid 1px #aaa;
 }
 table.list tr {
         background: white;
 }
 table.list tr:hover {
         background: #eeb;
 }
 table.list th {
         font-weight: normal;
         background: #ddd;
         border-bottom: solid 1px #aaa;
         padding: 0.1em 0.5em 0.1em 0.5em;
         vertical-align: baseline;
 }
 table.list td {
         border: none;
         padding: 0.1em 0.5em 0.1em 0.5em;
 }
 img {
         border: none;
 }
 
 
 div#header {
         background-color: #ddd;
         padding: 0.25em 0.25em 0.25em 0.5em;
         font-size: 150%;
         font-weight: bold;
         border: solid 1px #aaa;
         vertical-align: middle;
         margin-bottom: 2em;
 }
 div#header img#logo {
         float: right;
 }
+
+div#header input {
+        float: right;
+        margin: 0.25em 1em;
+}
 div#header a {
         color: black;
 }
 
 div#content {
         margin: 0.5em 0.5em;
 }
 
 div#blob {
         border: solid 1px black;
 }
 
 div.error {
         color: red;
         font-weight: bold;
         margin: 1em 2em;
 }
 div.ls-blob, div.ls-dir {
         font-family: monospace;
 }
 div.ls-dir a {
         font-weight: bold;
 }
 th.filesize, td.filesize {
         text-align: right;
 }
 td.filesize {
         font-family: monospace;
 }
 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;
         font-size: 125%;
         margin: 1.5em 0em 0.5em 0em;
         padding: 0em;
 }
 div.commit-msg {
         white-space: pre;
         font-family: monospace;
 }
 table.diffstat {
         border-collapse: collapse;
         margin-top: 1.5em;
 }
 table.diffstat th {
         font-weight: normal;
         text-align: left;
         text-decoration: underline;
         padding: 0.1em 1em 0.1em 0.1em;
         font-size: 100%;
 }
 table.diffstat td {
         padding: 0.1em 1em 0.1em 0.1em;
         font-size: 100%;
 }
 table.diffstat td span.modechange {
         padding-left: 1em;
         color: red;
 }
 table.diffstat td.add a {
         color: green;
 }
 table.diffstat td.del a {
         color: red;
 }
 table.diffstat td.upd a {
         color: blue;
 }
 table.diffstat td.summary {
         /* border-top: solid 1px black; */
         color: #888;
         padding-top: 0.5em;
 }
 
 table.diff td {
         border: solid 1px black;
         font-family: monospace;
         white-space: pre;
 }
 
 table.diff td div.hunk {
         background: #ccc;
 }
 
 table.diff td div.add {
         color: green;
 }
 
 table.diff td div.del {
         color: red;
 }
 
 .sha1 {
         font-family: courier;
         font-size: 90%;
 }
 .left {
         text-align: left;
 }
 .right {
         text-align: right;
 }
diff --git a/cgit.h b/cgit.h
index 362b435..e114a50 100644
--- a/cgit.h
+++ b/cgit.h
@@ -1,111 +1,113 @@
 #ifndef CGIT_H
 #define CGIT_H
 
 #include "git.h"
 #include <openssl/sha.h>
 #include <ctype.h>
 #include <sched.h>
 
 typedef void (*configfn)(const char *name, const char *value);
 
 struct cacheitem {
         char *name;
         struct stat st;
         int ttl;
         int fd;
 };
 
 struct commitinfo {
         struct commit *commit;
         char *author;
         char *author_email;
         unsigned long author_date;
         char *committer;
         char *committer_email;
         unsigned long committer_date;
         char *subject;
         char *msg;
 };
 
 extern const char cgit_version[];
 
 extern char *cgit_root;
 extern char *cgit_root_title;
 extern char *cgit_css;
 extern char *cgit_logo;
 extern char *cgit_logo_link;
 extern char *cgit_virtual_root;
 extern char *cgit_cache_root;
 
 extern int cgit_nocache;
 extern int cgit_max_lock_attempts;
 extern int cgit_cache_root_ttl;
 extern int cgit_cache_repo_ttl;
 extern int cgit_cache_dynamic_ttl;
 extern int cgit_cache_static_ttl;
 extern int cgit_cache_max_create_time;
 
 extern char *cgit_repo_name;
 extern char *cgit_repo_desc;
 extern char *cgit_repo_owner;
 
 extern int cgit_query_has_symref;
 extern int cgit_query_has_sha1;
 
 extern char *cgit_querystring;
 extern char *cgit_query_repo;
 extern char *cgit_query_page;
+extern char *cgit_query_search;
 extern char *cgit_query_head;
 extern char *cgit_query_sha1;
 extern char *cgit_query_sha2;
 extern int   cgit_query_ofs;
 
 extern int htmlfd;
 
 extern void cgit_global_config_cb(const char *name, const char *value);
 extern void cgit_repo_config_cb(const char *name, const char *value);
 extern void cgit_querystring_cb(const char *name, const char *value);
 
 extern void *cgit_free_commitinfo(struct commitinfo *info);
 
 extern char *fmt(const char *format,...);
 
 extern void html(const char *txt);
 extern void htmlf(const char *format,...);
 extern void html_txt(char *txt);
 extern void html_ntxt(int len, char *txt);
 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 void cache_prepare(struct cacheitem *item);
 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);
+extern void cgit_print_pageheader(char *title, int show_search);
 
 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);
 extern void cgit_print_view(const char *hex);
 extern void cgit_print_tree(const char *hex);
 extern void cgit_print_commit(const char *hex);
 extern void cgit_print_diff(const char *old_hex, const char *new_hex);
 
 #endif /* CGIT_H */
diff --git a/html.c b/html.c
index 3a5d28d..c0b2ed4 100644
--- a/html.c
+++ b/html.c
@@ -1,157 +1,167 @@
 /* html.c: helper functions for html output
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 char *fmt(const char *format, ...)
 {
         static char buf[8][1024];
         static int bufidx;
         int len;
         va_list args;
 
         bufidx++;
         bufidx &= 7;
 
         va_start(args, format);
         len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
         va_end(args);
         if (len>sizeof(buf[bufidx]))
                 die("[html.c] string truncated: %s", format);
         return buf[bufidx];
 }
 
 void html(const char *txt)
 {
         write(htmlfd, txt, strlen(txt));
 }
 
 void htmlf(const char *format, ...)
 {
         static char buf[65536];
         va_list args;
 
         va_start(args, format);
         vsnprintf(buf, sizeof(buf), format, args);
         va_end(args);
         html(buf);
 }
 
 void html_txt(char *txt)
 {
         char *t = txt;
         while(t && *t){
                 int c = *t;
                 if (c=='<' || c=='>' || c=='&') {
                         *t = '\0';
                         html(txt);
                         *t = c;
                         if (c=='>')
                                 html("&gt;");
                         else if (c=='<')
                                 html("&lt;");
                         else if (c=='&')
                                 html("&amp;");
                         txt = t+1;
                 }
                 t++;
         }
         if (t!=txt)
                 html(txt);
 }
 
 void html_ntxt(int len, char *txt)
 {
         char *t = txt;
         while(t && *t && len--){
                 int c = *t;
                 if (c=='<' || c=='>' || c=='&') {
                         *t = '\0';
                         html(txt);
                         *t = c;
                         if (c=='>')
                                 html("&gt;");
                         else if (c=='<')
                                 html("&lt;");
                         else if (c=='&')
                                 html("&amp;");
                         txt = t+1;
                 }
                 t++;
         }
         if (t!=txt) {
                 char c = *t;
                 *t = '\0';
                 html(txt);
                 *t = c;
         }
         if (len<0)
                 html("...");
 }
 
 void html_attr(char *txt)
 {
         char *t = txt;
         while(t && *t){
                 int c = *t;
                 if (c=='<' || c=='>' || c=='\'') {
                         *t = '\0';
                         html(txt);
                         *t = c;
                         if (c=='>')
                                 html("&gt;");
                         else if (c=='<')
                                 html("&lt;");
                         else if (c=='\'')
                                 html("&quote;");
                         txt = t+1;
                 }
                 t++;
         }
         if (t!=txt)
                 html(txt);
 }
 
+void html_hidden(char *name, char *value)
+{
+        html("<input type='hidden' name='");
+        html_attr(name);
+        html("' value='");
+        html_attr(value);
+        html("'/>");
+}
+
 void html_link_open(char *url, char *title, char *class)
 {
         html("<a href='");
         html_attr(url);
         if (title) {
                 html("' title='");
                 html_attr(title);
         }
         if (class) {
                 html("' class='");
                 html_attr(class);
         }
         html("'>");
 }
 
 void html_link_close(void)
 {
         html("</a>");
 }
 
 void html_fileperm(unsigned short mode)
 {
         htmlf("%c%c%c", (mode & 4 ? 'r' : '-'), 
               (mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
 }
 
 void html_filemode(unsigned short mode)
 {
         if (S_ISDIR(mode))
                 html("d");
         else if (S_ISLNK(mode))
                 html("l");
         else
                 html("-");
         html_fileperm(mode >> 6);
         html_fileperm(mode >> 3);
         html_fileperm(mode);
 }
+
diff --git a/shared.c b/shared.c
index 18b795b..7def51a 100644
--- a/shared.c
+++ b/shared.c
@@ -1,112 +1,115 @@
 /* shared.c: global vars + some callback functions
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 char *cgit_root         = "/usr/src/git";
 char *cgit_root_title   = "Git repository browser";
 char *cgit_css          = "/cgit.css";
 char *cgit_logo         = "/git-logo.png";
 char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
 char *cgit_virtual_root = NULL;
 
 char *cgit_cache_root   = "/var/cache/cgit";
 
 int cgit_nocache               =  0;
 int cgit_max_lock_attempts     =  5;
 int cgit_cache_root_ttl        =  5;
 int cgit_cache_repo_ttl        =  5;
 int cgit_cache_dynamic_ttl     =  5;
 int cgit_cache_static_ttl      = -1;
 int cgit_cache_max_create_time =  5;
 
 char *cgit_repo_name    = NULL;
 char *cgit_repo_desc    = NULL;
 char *cgit_repo_owner   = NULL;
 
 int cgit_query_has_symref = 0;
 int cgit_query_has_sha1   = 0;
 
 char *cgit_querystring  = NULL;
 char *cgit_query_repo   = NULL;
 char *cgit_query_page   = NULL;
 char *cgit_query_head   = NULL;
+char *cgit_query_search = NULL;
 char *cgit_query_sha1   = NULL;
 char *cgit_query_sha2   = NULL;
 int   cgit_query_ofs    = 0;
 
 int htmlfd = 0;
 
 void cgit_global_config_cb(const char *name, const char *value)
 {
         if (!strcmp(name, "root"))
                 cgit_root = xstrdup(value);
         else if (!strcmp(name, "root-title"))
                 cgit_root_title = xstrdup(value);
         else if (!strcmp(name, "css"))
                 cgit_css = xstrdup(value);
         else if (!strcmp(name, "logo"))
                 cgit_logo = xstrdup(value);
         else if (!strcmp(name, "logo-link"))
                 cgit_logo_link = xstrdup(value);
         else if (!strcmp(name, "virtual-root"))
                 cgit_virtual_root = xstrdup(value);
         else if (!strcmp(name, "nocache"))
                 cgit_nocache = atoi(value);
         else if (!strcmp(name, "cache-root"))
                 cgit_cache_root = xstrdup(value);
         else if (!strcmp(name, "cache-root-ttl"))
                 cgit_cache_root_ttl = atoi(value);
         else if (!strcmp(name, "cache-repo-ttl"))
                 cgit_cache_repo_ttl = atoi(value);
         else if (!strcmp(name, "cache-static-ttl"))
                 cgit_cache_static_ttl = atoi(value);
         else if (!strcmp(name, "cache-dynamic-ttl"))
                 cgit_cache_dynamic_ttl = atoi(value);
 }
 
 void cgit_repo_config_cb(const char *name, const char *value)
 {
         if (!strcmp(name, "name"))
                 cgit_repo_name = xstrdup(value);
         else if (!strcmp(name, "desc"))
                 cgit_repo_desc = xstrdup(value);
         else if (!strcmp(name, "owner"))
                 cgit_repo_owner = xstrdup(value);
 }
 
 void cgit_querystring_cb(const char *name, const char *value)
 {
         if (!strcmp(name,"r")) {
                 cgit_query_repo = xstrdup(value);
         } else if (!strcmp(name, "p")) {
                 cgit_query_page = xstrdup(value);
+        } else if (!strcmp(name, "q")) {
+                cgit_query_search = xstrdup(value);
         } else if (!strcmp(name, "h")) {
                 cgit_query_head = xstrdup(value);
                 cgit_query_has_symref = 1;
         } else if (!strcmp(name, "id")) {
                 cgit_query_sha1 = xstrdup(value);
                 cgit_query_has_sha1 = 1;
         } else if (!strcmp(name, "id2")) {
                 cgit_query_sha2 = xstrdup(value);
                 cgit_query_has_sha1 = 1;
         } else if (!strcmp(name, "ofs")) {
                 cgit_query_ofs = atoi(value);
         }
 }
 
 void *cgit_free_commitinfo(struct commitinfo *info)
 {
         free(info->author);
         free(info->author_email);
         free(info->committer);
         free(info->committer_email);
         free(info->subject);
         free(info);
         return NULL;
 }
diff --git a/ui-repolist.c b/ui-repolist.c
index 7090c12..9f12b18 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -1,63 +1,63 @@
 /* ui-repolist.c: functions for generating the repolist page
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 void cgit_print_repolist(struct cacheitem *item)
 {
         DIR *d;
         struct dirent *de;
         struct stat st;
         char *name;
 
         chdir(cgit_root);
         cgit_print_docstart(cgit_root_title, item);
-        cgit_print_pageheader(cgit_root_title);
+        cgit_print_pageheader(cgit_root_title, 0);
 
         if (!(d = opendir("."))) {
                 cgit_print_error(fmt("Unable to scan repository directory: %s",
                                      strerror(errno)));
                 cgit_print_docend();
                 return;
         }
 
         html("<h2>Repositories</h2>\n");
         html("<table class='list nowrap'>");
         html("<tr>"
              "<th class='left'>Name</th>"
              "<th class='left'>Description</th>"
              "<th class='left'>Owner</th></tr>\n");
         while ((de = readdir(d)) != NULL) {
                 if (de->d_name[0] == '.')
                         continue;
                 if (stat(de->d_name, &st) < 0)
                         continue;
                 if (!S_ISDIR(st.st_mode))
                         continue;
 
                 cgit_repo_name = cgit_repo_desc = cgit_repo_owner = NULL;
                 name = fmt("%s/info/cgit", de->d_name);
                 if (cgit_read_config(name, cgit_repo_config_cb))
                         continue;
 
                 html("<tr><td>");
                 html_link_open(cgit_repourl(de->d_name), NULL, NULL);
                 html_txt(cgit_repo_name);
                 html_link_close();
                 html("</td><td>");
                 html_txt(cgit_repo_desc);
                 html("</td><td>");
                 html_txt(cgit_repo_owner);
                 html("</td></tr>\n");
         }
         closedir(d);
         html("</table>");
         cgit_print_docend();
 }
 
 
diff --git a/ui-shared.c b/ui-shared.c
index 9ec4be8..b9c1243 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -1,113 +1,139 @@
 /* ui-shared.c: common web output functions
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 const char cgit_doctype[] =
 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
 "  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
 
 static char *http_date(time_t t)
 {
         static char day[][4] = 
                 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
         static char month[][4] = 
                 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
                  "Jul", "Aug", "Sep", "Oct", "Now", "Dec"};
         struct tm *tm = gmtime(&t);
         return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
                    tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
                    tm->tm_hour, tm->tm_min, tm->tm_sec);
 }
 
 static int ttl_seconds(int ttl)
 {
         if (ttl<0)
                 return 60 * 60 * 24 * 365;
         else
                 return ttl * 60;
 }
 
 void cgit_print_error(char *msg)
 {
         html("<div class='error'>");
         html_txt(msg);
         html("</div>\n");
 }
 
 char *cgit_repourl(const char *reponame)
 {
         if (cgit_virtual_root) {
                 return fmt("%s/%s/", cgit_virtual_root, reponame);
         } else {
                 return fmt("?r=%s", reponame);
         }
 }
 
 char *cgit_pageurl(const char *reponame, const char *pagename, 
                    const char *query)
 {
         if (cgit_virtual_root) {
                 return fmt("%s/%s/%s/?%s", cgit_virtual_root, reponame, 
                            pagename, query);
         } else {
                 return fmt("?r=%s&p=%s&%s", reponame, pagename, query);
         }
 }
 
+char *cgit_currurl()
+{
+        if (!cgit_virtual_root)
+                return "./cgit.cgi";
+        else if (cgit_query_page)
+                return fmt("%s/%s/%s/", cgit_virtual_root, cgit_query_repo, cgit_query_page);
+        else if (cgit_query_repo)
+                return fmt("%s/%s/", cgit_virtual_root, cgit_query_repo);
+        else
+                return fmt("%s/", cgit_virtual_root);
+}
+
 
 void cgit_print_date(unsigned long secs)
 {
         char buf[32];
         struct tm *time;
 
         time = gmtime(&secs);
         strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
         html_txt(buf);
         
 }
 
 void cgit_print_docstart(char *title, struct cacheitem *item)
 {
         html("Content-Type: text/html; charset=utf-8\n");
         htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
         htmlf("Expires: %s\n", http_date(item->st.st_mtime +
                                          ttl_seconds(item->ttl)));
         html("\n");
         html(cgit_doctype);
         html("<html>\n");
         html("<head>\n");
         html("<title>");
         html_txt(title);
         html("</title>\n");
         htmlf("<meta name='generator' content='cgit v%s'/>\n", cgit_version);
         html("<link rel='stylesheet' type='text/css' href='");
         html_attr(cgit_css);
         html("'/>\n");
         html("</head>\n");
         html("<body>\n");
 }
 
 void cgit_print_docend()
 {
         html("</body>\n</html>\n");
 }
 
-void cgit_print_pageheader(char *title)
+void cgit_print_pageheader(char *title, int show_search)
 {
         html("<div id='header'>");
         htmlf("<a href='%s'>", cgit_logo_link);
         htmlf("<img id='logo' src='%s'/>\n", cgit_logo);
         htmlf("</a>");
+        if (show_search) {
+                html("<form method='get' href='");
+                html_attr(cgit_currurl());
+                html("'>");
+                if (cgit_query_head)
+                        html_hidden("h", cgit_query_head);
+                if (cgit_query_sha1)
+                        html_hidden("id", cgit_query_sha1);
+                if (cgit_query_sha2)
+                        html_hidden("id2", cgit_query_sha2);
+                html("<input type='text' name='q' value='");
+                html_attr(cgit_query_search);
+                html("'/></form>");
+        }
         if (cgit_query_repo)
                 htmlf("<a href='%s'>", cgit_repourl(cgit_query_repo));
         html_txt(title);
         if (cgit_query_repo)
                 html("</a>");
         html("</div>");
 }