cGit-UI for Git Repositories

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <stdio.h>
#include <sys/sysinfo.h>
#include <sys/types.h>
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#else
#include <stdint.h>
#endif
#include <stddef.h>   /* offsetof(3) */
#include <dirent.h>
#include <sys/stat.h> /* chmod(2)    */
#include <sys/file.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <limits.h>
#include <string.h>   /* strdup(3)   */
#include <libgen.h>   /* basename(3) */
#include <ctype.h>    /* tolower(3)  */
#include <errno.h>
#include <time.h>
#include <sys/time.h>
#include <pwd.h>
#include <grp.h>
#include <stdarg.h>
#include <locale.h>
#include <unistd.h>

#include <git2.h>

#include <nls.h>

#include <defs.h>

#include <fatal.h>
#include <http.h>
#include <html.h>

#include <cmpvers.h>
#include <dlist.h>
#include <strbuf.h>
#include <repolist.h>
#include <wrapper.h>
#include <system.h>
#include <date.h>

#include <ctx.h>
#include <git-shared.h>
#include <ui-shared.h>


/********************************
  Sorted dlist functions:
 */
struct tree_line {
  char           *name;
  char           *revision;
  git_filemode_t  mode;
  git_time_t      date;
  int             offset;
  git_off_t       size;
};

static struct dlist *directories = NULL;
static struct dlist *files       = NULL;

static struct tree_line *tree_line_alloc( const char *name, const char *revision, git_filemode_t mode, git_time_t date, int offset, git_off_t size  )
{
  struct tree_line *line = NULL;
  line = (struct tree_line *)xmalloc( sizeof(struct tree_line) );

  if( name )     { line->name     = xstrdup( name );     }
  if( revision ) { line->revision = xstrdup( revision ); }

  if( mode ) line->mode = mode;
  else       line->mode = GIT_FILEMODE_TREE;

  if( date ) line->date = date;
  else       line->date = -1;

  if( size ) line->size = size;
  else       line->size = 4096;

  return line;
}

static void __line_free( void *data, void *user_data )
{
  struct tree_line *line = (struct tree_line *)data;
  if( line )
  {
    if( line->name )     { free( line->name );     line->name     = NULL; }
    if( line->revision ) { free( line->revision ); line->revision = NULL; }

    free( line );
  }
}

static struct dlist *tree_lines_free( struct dlist *lines )
{
  if( lines )
  {
    dlist_free( lines, __line_free );
    lines = NULL;
  }
  return lines;
}

static int __cmp_tree_lines_byname( const void *a, const void *b )
{
  int ret = -1;

  struct tree_line *line1 = (struct tree_line *)a;
  struct tree_line *line2 = (struct tree_line *)b;

  if( line1->name && line2->name )
  {
    ret = strcmp( line1->name, line2->name );
  }
  else
    return ret;

  return ret;
}

static int __cmp_tree_lines_bytag( const void *a, const void *b )
{
  char *v1 = NULL, *v2 = NULL;
  int   ret = -1;

  struct tree_line *line1 = (struct tree_line *)a;
  struct tree_line *line2 = (struct tree_line *)b;

  if( line1->name && line2->name )
  {
    v1 = line1->name;
    v2 = line2->name;
    while( *v1 && !isdigit( *v1 ) ) ++v1;
    while( *v2 && !isdigit( *v2 ) ) ++v2;
    ret = strcmp( line1->name, line2->name );
  }
  else
    return ret;

  if( !*v1 || !*v2 )
  {
    return ret;
  }

  /******************************************
    sort reversive to show newest tag first:
   */
  return -cmp_version( (const char *)v1, (const char *)v2 );
}

static struct dlist *tree_lines_sort_byname( struct dlist *lines )
{
  if( lines ) { lines = dlist_sort( lines, __cmp_tree_lines_byname ); }
  return lines;
}

static struct dlist *tree_lines_sort_bytag( struct dlist *lines )
{
  if( lines ) { lines = dlist_sort( lines, __cmp_tree_lines_bytag ); }
  return lines;
}
/*
  End of sorted dlist functions.
 ********************************/

static void cgit_print_branches( struct strbuf *sb, const char *relative_path )
{
  git_repository *repo = NULL;
  git_reference_iterator *iter = NULL;
  const char *name = NULL;
  const char *refs = "refs/heads/*";

  const char *query_string = NULL;

  if( !sb || !relative_path || !*relative_path ) return;

  query_string = ctx_remove_query_param( ctx.env.query_string, "rev" );
  query_string = ctx_remove_query_param( query_string, "op" );

  if( !(repo = cgit_open_repository()) ) return;

  if( git_reference_iterator_glob_new( &iter, repo, refs ) < 0 )
  {
    close_repository( repo );
    return;
  }

  strbuf_addstr( sb, "\n" );
  strbuf_addf( sb, "              <div class=\"repo-tree-header\">\n" );
  strbuf_addf( sb, "                <div class=\"row\">\n" );
  strbuf_addf( sb, "                  <div class=\"col-path\">Path</div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-size\"><div class=\"tree-size trunc\">Size</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-rev\"><div class=\"tree-rev trunc\">Rev</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-date\"><div class=\"tree-date trunc\">Date</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-links\"><div class=\"tree-links trunc\">Links</div></div>\n" );
  strbuf_addf( sb, "                </div>\n" );
  strbuf_addf( sb, "              </div>\n\n" );
  strbuf_addf( sb, "              <div class=\"tree\">\n\n" );

  while( !git_reference_next_name( &name, iter ) )
  {
    struct tree_line *line = NULL;
    git_commit       *commit = NULL;
    const git_oid    *oid;
    git_time_t        date;
    int               offset;
    char id[GIT_OID_HEXSZ+1] = { 0 };

    if( !(commit = get_commit_by_ref( repo, name )) ) continue;

    oid     = git_commit_id( commit );
    date    = git_commit_time( commit );
    offset  = git_commit_time_offset( commit );

    offset = (offset % 60) + ((offset / 60) * 100);

    if( git_oid_fmt( (char *)&id[0], oid ) < 0 )
    {
      git_commit_free( commit );
      continue;
    }

    line = tree_line_alloc( (const char *)&name[11], (const char *)&id[0], 0, date, offset, 0 );
    directories = dlist_append( directories, (void *)line );

    git_commit_free( commit );
  }

  git_reference_iterator_free( iter );
  close_repository( repo );

  /*************************
    Print directories list:
   */
  if( directories )
  {
    struct dlist *list = NULL;

    directories = tree_lines_sort_byname( directories );

    list = directories;

    while( list )
    {
      struct tree_line *line = (struct tree_line *)list->data;

      if( strcmp( line->name, ctx.repo.trunk ) ) /* Do not print Trunk. */
      {
        /*************************
          Print branch Reference:
         */
        strbuf_addf( sb, "                <div class=\"row\">\n" );
        if( ctx.env.query_string && *ctx.env.query_string )
          strbuf_addf( sb, "                  <div class=\"col-path\"><a href=\"/%s/branches/%s/?%s\"><div class=\"tree-path dir\">%s/</div></a></div>\n", ctx.repo.name, line->name, ctx.env.query_string, line->name );
        else
          strbuf_addf( sb, "                  <div class=\"col-path\"><a href=\"/%s/branches/%s/\"><div class=\"tree-path dir\">%s/</div></a></div>\n", ctx.repo.name, line->name, line->name );
        strbuf_addf( sb, "                  <div class=\"col-size\"><div onclick=\"trunc(this)\" class=\"tree-size trunc\">%ld</div></div>\n", line->size );
        strbuf_addf( sb, "                  <div class=\"col-rev\"><div onclick=\"trunc(this)\" class=\"tree-rev trunc\"><span class=\"rev-short\" title=\"%s\">%0.8s</span></div></div>\n", line->revision, line->revision );
        if( line->date != -1 )
        {
          strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">" );
          cgit_print_age( sb, (time_t)line->date, line->offset, 0 );
          strbuf_addf( sb, "</div></div>\n" );
        }
        else
        {
          strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">unknown</div></div>\n" );
        }
        strbuf_addf( sb, "                  <div class=\"col-links\">\n" );
        strbuf_addf( sb, "                    <div onclick=\"trunc(this)\" class=\"tree-links trunc\">\n" );
        if( query_string && *query_string )
        {
          strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/branches/%s/?op=log&rev=%s&%s\">log</a> &nbsp;\n", line->revision, ctx.repo.name, line->name, line->revision, query_string );
          strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/branches/%s/?op=diff&rev=%s&%s\">diff</a>\n", ctx.repo.name, line->name, line->revision, query_string );
        }
        else
        {
          strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/branches/%s/?op=log&rev=%s\">log</a> &nbsp;\n", line->revision, ctx.repo.name, line->name, line->revision );
          strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/branches/%s/?op=diff&rev=%s\">diff</a>\n", ctx.repo.name, line->name, line->revision );
        }
        strbuf_addf( sb, "                    </div>\n" );
        strbuf_addf( sb, "                  </div>\n" );
        strbuf_addf( sb, "                </div>\n\n" );
        /*
          End of printing.
         *************************/
      }

      list = dlist_next( list );
    }
    directories = tree_lines_free( directories );
  }

  strbuf_addf( sb, "              </div> <!-- End of Tree -->\n\n" );
}


static void cgit_print_tags( struct strbuf *sb, const char *relative_path )
{
  git_repository *repo = NULL;
  git_reference_iterator *iter = NULL;
  const char *name = NULL;
  const char *refs = "refs/tags/*";

  const char *query_string = NULL;

  if( !sb || !relative_path || !*relative_path ) return;

  query_string = ctx_remove_query_param( ctx.env.query_string, "rev" );
  query_string = ctx_remove_query_param( query_string, "op" );

  if( !(repo = cgit_open_repository()) ) return;

  if( git_reference_iterator_glob_new( &iter, repo, refs ) < 0 )
  {
    close_repository( repo );
    return;
  }

  strbuf_addstr( sb, "\n" );
  strbuf_addf( sb, "              <div class=\"repo-tree-header\">\n" );
  strbuf_addf( sb, "                <div class=\"row\">\n" );
  strbuf_addf( sb, "                  <div class=\"col-path\">Path</div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-size\"><div class=\"tree-size trunc\">Size</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-rev\"><div class=\"tree-rev trunc\">Rev</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-date\"><div class=\"tree-date trunc\">Date</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-links\"><div class=\"tree-links trunc\">Links</div></div>\n" );
  strbuf_addf( sb, "                </div>\n" );
  strbuf_addf( sb, "              </div>\n\n" );
  strbuf_addf( sb, "              <div class=\"tree\">\n\n" );

  while( !git_reference_next_name( &name, iter ) )
  {
    struct tree_line *line = NULL;
    git_commit       *commit = NULL;
    const git_oid    *oid;
    git_time_t        date;
    int               offset;
    char id[GIT_OID_HEXSZ+1] = { 0 };

    if( !(commit = get_commit_by_ref( repo, name )) ) continue;

    oid     = git_commit_id( commit );
    date    = git_commit_time( commit );
    offset  = git_commit_time_offset( commit );

    offset = (offset % 60) + ((offset / 60) * 100);

    if( git_oid_fmt( (char *)&id[0], oid ) < 0 )
    {
      git_commit_free( commit );
      continue;
    }

    line = tree_line_alloc( (const char *)&name[10], (const char *)&id[0], 0, date, offset, 0 );
    directories = dlist_append( directories, (void *)line );

    git_commit_free( commit );
  }

  git_reference_iterator_free( iter );
  close_repository( repo );

  /*************************
    Print directories list:
   */
  if( directories )
  {
    struct dlist *list = NULL;

    directories = tree_lines_sort_bytag( directories );

    list = directories;

    while( list )
    {
      struct tree_line *line = (struct tree_line *)list->data;

      /**********************
        Print tag Reference:
       */
      strbuf_addf( sb, "                <div class=\"row\">\n" );
      if( ctx.env.query_string && *ctx.env.query_string )
        strbuf_addf( sb, "                  <div class=\"col-path\"><a href=\"/%s/tags/%s/?%s\"><div class=\"tree-path dir\">%s/</div></a></div>\n", ctx.repo.name, line->name, ctx.env.query_string, line->name );
      else
        strbuf_addf( sb, "                  <div class=\"col-path\"><a href=\"/%s/tags/%s/\"><div class=\"tree-path dir\">%s/</div></a></div>\n", ctx.repo.name, line->name, line->name );
      strbuf_addf( sb, "                  <div class=\"col-size\"><div onclick=\"trunc(this)\" class=\"tree-size trunc\">%ld</div></div>\n", line->size );
      strbuf_addf( sb, "                  <div class=\"col-rev\"><div onclick=\"trunc(this)\" class=\"tree-rev trunc\"><span class=\"rev-short\" title=\"%s\">%0.8s</span></div></div>\n", line->revision, line->revision );
      if( line->date != -1 )
      {
        strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">" );
        cgit_print_age( sb, (time_t)line->date, line->offset, 0 );
        strbuf_addf( sb, "</div></div>\n" );
      }
      else
      {
        strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">unknown</div></div>\n" );
      }
      strbuf_addf( sb, "                  <div class=\"col-links\">\n" );
      strbuf_addf( sb, "                    <div onclick=\"trunc(this)\" class=\"tree-links trunc\">\n" );
      if( query_string && *query_string )
      {
        strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/tags/%s/?op=log&rev=%s&%s\">log</a> &nbsp;\n", line->revision, ctx.repo.name, line->name, line->revision, query_string );
        strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/tags/%s/?op=diff&rev=%s&%s\">diff</a>\n", ctx.repo.name, line->name, line->revision, query_string );
      }
      else
      {
        strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/tags/%s/?op=log&rev=%s\">log</a> &nbsp;\n", line->revision, ctx.repo.name, line->name, line->revision );
        strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/tags/%s/?op=diff&rev=%s\">diff</a>\n", ctx.repo.name, line->name, line->revision );
      }
      strbuf_addf( sb, "                    </div>\n" );
      strbuf_addf( sb, "                  </div>\n" );
      strbuf_addf( sb, "                </div>\n\n" );
      /*
        End of printing.
       **********************/

      list = dlist_next( list );
    }
    directories = tree_lines_free( directories );
  }

  strbuf_addf( sb, "              </div> <!-- End of Tree -->\n\n" );
}


static void cgit_print_tree( struct strbuf *sb, const char *relative_path, const char *revision )
{
  struct cgit_info info = CGIT_INFO_INIT;
  const char *query_string = NULL;

  if( !sb || !relative_path || !*relative_path ) return;

  if( !strcmp( relative_path, "tags"     ) ) return cgit_print_tags( sb, relative_path );
  if( !strcmp( relative_path, "branches" ) ) return cgit_print_branches( sb, relative_path );

  if( revision && strcmp( revision, (const char *)&ctx.repo.relative_info.revision[0] ) )
  {
    cgit_rpath_info( &info, relative_path, revision );
    if( info.kind != GIT_OBJECT_BLOB )
    {
      strbuf_addf( sb, "              <h1>Requested resource cannot be shown</h1>\n" );
      strbuf_addf( sb, "              <p class='leading'>The Tree with specified revision '%s' cannot be shown.</p>\n", revision );
      return;
    }
  }
  else
  {
    memcpy( (void *)&info, (void *)&ctx.repo.relative_info, sizeof( struct cgit_info ) );
  }

  query_string = ctx_remove_query_param( ctx.env.query_string, "rev" );
  query_string = ctx_remove_query_param( query_string, "op" );

  strbuf_addstr( sb, "\n" );
  strbuf_addf( sb, "              <div class=\"repo-tree-header\">\n" );
  strbuf_addf( sb, "                <div class=\"row\">\n" );
  strbuf_addf( sb, "                  <div class=\"col-path\">Path</div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-size\"><div class=\"tree-size trunc\">Size</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-rev\"><div class=\"tree-rev trunc\">Rev</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-date\"><div class=\"tree-date trunc\">Date</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-links\"><div class=\"tree-links trunc\">Links</div></div>\n" );
  strbuf_addf( sb, "                </div>\n" );
  strbuf_addf( sb, "              </div>\n\n" );
  strbuf_addf( sb, "              <div class=\"tree\">\n\n" );

  if( info.kind == GIT_OBJECT_TREE )
  {
    git_repository *repo = NULL;
    git_tree       *tree = NULL;
    git_oid         oid;
    size_t          i, count;
    char rpath[PATH_MAX] = { 0 };

    if( git_oid_fromstr( &oid, (const char *)&info.oid[0] ) < 0 )
    {
      return;
    }

    if( !(repo = cgit_open_repository()) )
    {
      return;
    }

    if( git_tree_lookup( &tree, repo, &oid ) < 0 )
    {
      close_repository( repo );
      return;
    }

    count = git_tree_entrycount( tree );
    for( i = 0; i < count; ++i )
    {
      struct tree_line *line = NULL;
      struct cgit_info entry_info = CGIT_INFO_INIT;
      git_object *obj = NULL;
      git_off_t   rawsize = 4096;
      const git_tree_entry *entry = git_tree_entry_byindex( (const git_tree *)tree, i );
      const char *name = git_tree_entry_name( entry ); /* filename */

      git_tree_entry_to_object( &obj, repo, entry );
      if( git_object_type( (const git_object *)obj ) == GIT_OBJECT_BLOB )
      {
        rawsize = git_blob_rawsize( (git_blob *)obj );
      }
      git_object_free( obj );

      sprintf( (char *)&rpath[0], "%s/%s", relative_path, name );
      cgit_rpath_info( &entry_info, (char *)&rpath[0], info.revision );

      line = tree_line_alloc( name, (const char *)&entry_info.revision[0], entry_info.mode, entry_info.date, entry_info.offset, rawsize );

      if( entry_info.kind == GIT_OBJECT_TREE )
      {
        directories = dlist_append( directories, (void *)line );
      }
      else
      {
        files = dlist_append( files, (void *)line );
      }
    }

    git_tree_free( tree );
    close_repository( repo );


    /*************************
      Print directories list:
     */
    if( directories )
    {
      struct dlist *list = NULL;

      directories = tree_lines_sort_byname( directories );

      list = directories;

      while( list )
      {
        const char *mode = "";
        struct tree_line *line = (struct tree_line *)list->data;

        if( line->mode == GIT_FILEMODE_LINK )
          mode = " link";
        else
          mode = "";

        /*************************
          Print branch Reference:
         */
        strbuf_addf( sb, "                <div class=\"row\">\n" );
        if( ctx.env.query_string && *ctx.env.query_string )
          strbuf_addf( sb, "                  <div class=\"col-path\"><a href=\"/%s/%s/%s/?%s\"><div class=\"tree-path dir%s\">%s/</div></a></div>\n", ctx.repo.name, relative_path, line->name, ctx.env.query_string, mode, line->name );
        else
          strbuf_addf( sb, "                  <div class=\"col-path\"><a href=\"/%s/%s/%s/\"><div class=\"tree-path dir%s\">%s/</div></a></div>\n", ctx.repo.name, relative_path, line->name, mode, line->name );
        strbuf_addf( sb, "                  <div class=\"col-size\"><div onclick=\"trunc(this)\" class=\"tree-size trunc\">%ld</div></div>\n", line->size );
        strbuf_addf( sb, "                  <div class=\"col-rev\"><div onclick=\"trunc(this)\" class=\"tree-rev trunc\"><span class=\"rev-short\" title=\"%s\">%0.8s</span></div></div>\n", line->revision, line->revision );
        if( line->date != -1 )
        {
          strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">" );
          cgit_print_age( sb, (time_t)line->date, line->offset, 0 );
          strbuf_addf( sb, "</div></div>\n" );
        }
        else
        {
          strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">unknown</div></div>\n" );
        }
        strbuf_addf( sb, "                  <div class=\"col-links\">\n" );
        strbuf_addf( sb, "                    <div onclick=\"trunc(this)\" class=\"tree-links trunc\">\n" );
        if( query_string && *query_string )
        {
          strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/%s/%s/?op=log&rev=%s&%s\">log</a> &nbsp;\n", line->revision, ctx.repo.name, relative_path, line->name, line->revision, query_string );
          strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/%s/%s/?op=diff&rev=%s&%s\">diff</a>\n", ctx.repo.name, relative_path, line->name, line->revision, query_string );
        }
        else
        {
          strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/%s/%s/?op=log&rev=%s\">log</a> &nbsp;\n", line->revision, ctx.repo.name, relative_path, line->name, line->revision );
          strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/%s/%s/?op=diff&rev=%s\">diff</a>\n", ctx.repo.name, relative_path, line->name, line->revision );
        }
        strbuf_addf( sb, "                    </div>\n" );
        strbuf_addf( sb, "                  </div>\n" );
        strbuf_addf( sb, "                </div>\n\n" );
        /*
          End of printing.
         *************************/

        list = dlist_next( list );
      }
      directories = tree_lines_free( directories );
    }

    /********************
      Print filess list:
     */
    if( files )
    {
      struct dlist *list = NULL;

      files = tree_lines_sort_byname( files );

      list = files;

      while( list )
      {
        const char *mode = "";
        const char *mode_prefix = "";
        struct tree_line *line = (struct tree_line *)list->data;

        if( line->mode == GIT_FILEMODE_LINK )
        {
          mode = " link";
          mode_prefix = "@";
        }
        else if( line->mode == GIT_FILEMODE_BLOB_EXECUTABLE )
        {
          mode = " exec";
          mode_prefix = "";
        }
        else
        {
          mode = "";
          mode_prefix = "";
        }

        /*************************
          Print branch Reference:
         */
        strbuf_addf( sb, "                <div class=\"row\">\n" );
        if( ctx.env.query_string && *ctx.env.query_string )
          strbuf_addf( sb, "                  <div class=\"col-path\"><a href=\"/%s/%s/%s/?%s\"><div class=\"tree-path file%s\">%s%s</div></a></div>\n", ctx.repo.name, relative_path, line->name, ctx.env.query_string, mode, mode_prefix, line->name );
        else
          strbuf_addf( sb, "                  <div class=\"col-path\"><a href=\"/%s/%s/%s/\"><div class=\"tree-path file%s\">%s%s</div></a></div>\n", ctx.repo.name, relative_path, line->name, mode, mode_prefix, line->name );
        strbuf_addf( sb, "                  <div class=\"col-size\"><div onclick=\"trunc(this)\" class=\"tree-size trunc\">%ld</div></div>\n", line->size );
        strbuf_addf( sb, "                  <div class=\"col-rev\"><div onclick=\"trunc(this)\" class=\"tree-rev trunc\"><span class=\"rev-short\" title=\"%s\">%0.8s</span></div></div>\n", line->revision, line->revision );
        if( line->date != -1 )
        {
          strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">" );
          cgit_print_age( sb, (time_t)line->date, line->offset, 0 );
          strbuf_addf( sb, "</div></div>\n" );
        }
        else
        {
          strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">unknown</div></div>\n" );
        }
        strbuf_addf( sb, "                  <div class=\"col-links\">\n" );
        strbuf_addf( sb, "                    <div onclick=\"trunc(this)\" class=\"tree-links trunc\">\n" );
        if( query_string && *query_string )
        {
          strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/%s/%s/?op=log&rev=%s&%s\">log</a> &nbsp;\n", line->revision, ctx.repo.name, relative_path, line->name, line->revision, query_string );
          strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/%s/%s/?op=diff&rev=%s&%s\">diff</a> &nbsp;\n", ctx.repo.name, relative_path, line->name, line->revision, query_string );
          strbuf_addf( sb, "                      <a href=\"/%s/%s/%s/?op=blame&rev=%s&%s\">blame</a>\n", ctx.repo.name, relative_path, line->name, line->revision, query_string );
        }
        else
        {
          strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/%s/%s/?op=log&rev=%s\">log</a> &nbsp;\n", line->revision, ctx.repo.name, relative_path, line->name, line->revision );
          strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/%s/%s/?op=diff&rev=%s\">diff</a> &nbsp;\n", ctx.repo.name, relative_path, line->name, line->revision );
          strbuf_addf( sb, "                      <a href=\"/%s/%s/%s/?op=blame&rev=%s\">blame</a>\n", ctx.repo.name, relative_path, line->name, line->revision );
        }
        strbuf_addf( sb, "                    </div>\n" );
        strbuf_addf( sb, "                  </div>\n" );
        strbuf_addf( sb, "                </div>\n\n" );
        /*
          End of printing.
         *************************/

        list = dlist_next( list );
      }
      files = tree_lines_free( files );
    }
  }

  strbuf_addf( sb, "              </div> <!-- End of Tree -->\n\n" );

  return;
}

static void cgit_print_summary( struct strbuf *sb, const char *relative_path, const char *revision )
{
  struct cgit_info  info;
  const char       *query_string = NULL;

  if( !sb ) return;

  if( relative_path && *relative_path )
    return cgit_print_tree( sb, relative_path, revision );

  query_string = ctx_remove_query_param( ctx.env.query_string, "rev" );
  query_string = ctx_remove_query_param( query_string, "op" );

  strbuf_addstr( sb, "\n" );
  strbuf_addf( sb, "              <div class=\"repo-tree-header\">\n" );
  strbuf_addf( sb, "                <div class=\"row\">\n" );
  strbuf_addf( sb, "                  <div class=\"col-path\">Refs</div>\n" );
  strbuf_addf( sb, "                </div>\n" );
  strbuf_addf( sb, "              </div>\n\n" );
  strbuf_addf( sb, "              <div class=\"tree\">\n\n" );
  strbuf_addf( sb, "                <div class=\"row\">\n" );
  strbuf_addf( sb, "                  <div class=\"col-path\"><div class=\"tree-path dir\"><a href=\"/%s/branches/\">branches/</a></div></div>\n", ctx.repo.name );
  strbuf_addf( sb, "                </div>\n" );
  strbuf_addf( sb, "                <div class=\"row\">\n" );
  strbuf_addf( sb, "                  <div class=\"col-path\"><div class=\"tree-path dir\"><a href=\"/%s/tags/\">tags/</a></div></div>\n", ctx.repo.name );
  strbuf_addf( sb, "                </div>\n\n" );
  strbuf_addf( sb, "              </div> <!-- End of Tree -->\n" );

  cgit_rpath_info( &info, "/", revision );
  if( info.kind != GIT_OBJECT_TREE && info.kind != GIT_OBJECT_BLOB )
  {
    memcpy( (void *)&info, (const void *)&ctx.repo.relative_info, sizeof( struct cgit_info ) );
    ctx.query.revision = NULL;
    (void)ctx_grab_str_query_param( "rev" );
    ctx.query.rev = "0";
  }

  strbuf_addstr( sb, "\n" );
  strbuf_addf( sb, "              <div class=\"repo-tree-header\">\n" );
  strbuf_addf( sb, "                <div class=\"row\">\n" );
  strbuf_addf( sb, "                  <div class=\"col-path\">Path</div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-size\"><div class=\"tree-size trunc\">Size</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-rev\"><div class=\"tree-rev trunc\">Rev</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-date\"><div class=\"tree-date trunc\">Date</div></div>\n" );
  strbuf_addf( sb, "                  <div class=\"col-links\"><div class=\"tree-links trunc\">Links</div></div>\n" );
  strbuf_addf( sb, "                </div>\n" );
  strbuf_addf( sb, "              </div>\n\n" );
  strbuf_addf( sb, "              <div class=\"tree\">\n\n" );

  /************************
    Print trunk Reference:
   */
  strbuf_addf( sb, "                <div class=\"row\">\n" );
  strbuf_addf( sb, "                  <div class=\"col-path\"><a href=\"/%s/trunk/\"><div class=\"tree-path dir\">trunk/</div></a></div>\n", ctx.repo.name );
  strbuf_addf( sb, "                  <div class=\"col-size\"><div onclick=\"trunc(this)\" class=\"tree-size trunc\">%ld</div></div>\n", (git_off_t)4096 );
  strbuf_addf( sb, "                  <div class=\"col-rev\"><div onclick=\"trunc(this)\" class=\"tree-rev trunc\"><span class=\"rev-short\" title=\"%s\">%0.8s</span></div></div>\n", info.revision, info.revision );
  if( info.date != -1 )
  {
    strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">" );
    cgit_print_age( sb, (time_t)info.date, info.offset, 0 );
    strbuf_addf( sb, "</div></div>\n" );
  }
  else
  {
    strbuf_addf( sb, "                  <div class=\"col-date\"><div onclick=\"trunc(this)\" class=\"tree-date trunc\">unknown</div></div>\n" );
  }
  strbuf_addf( sb, "                  <div class=\"col-links\">\n" );
  strbuf_addf( sb, "                    <div onclick=\"trunc(this)\" class=\"tree-links trunc\">\n" );
  if( query_string && *query_string )
  {
    strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/trunk/?op=log&rev=%s&%s\">log</a> &nbsp;\n", info.revision, ctx.repo.name, info.revision, query_string );
    strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/trunk/?op=diff&rev=%s&%s\">diff</a>\n", ctx.repo.name, info.revision, query_string );
  }
  else
  {
    strbuf_addf( sb, "                      <a title=\"Log from: %s\" href=\"/%s/trunk/?op=log&rev=%s\">log</a> &nbsp;\n", info.revision, ctx.repo.name, info.revision );
    strbuf_addf( sb, "                      <a title=\"Compare with Previous\" href=\"/%s/trunk/?op=diff&rev=%s\">diff</a>\n", ctx.repo.name, info.revision );
  }
  strbuf_addf( sb, "                    </div>\n" );
  strbuf_addf( sb, "                  </div>\n" );
  strbuf_addf( sb, "                </div>\n\n" );

  strbuf_addf( sb, "              </div> <!-- End of Tree -->\n\n" );
}


static void cgit_print_clone_urls( struct strbuf *sb, const char *relative_path )
{
  char  ref[PATH_MAX] = { 0 };
  char  rpath[PATH_MAX] = { 0 };
  char  branch[PATH_MAX] = { 0 };

  if( !sb ) return;

  parse_relative_path( (char *)&ref[0], (char *)&rpath[0], relative_path );

  if( ref[0] && strlen( (char *)&ref[0] ) > 11 )
  {
    const char *b = NULL;
    if( !strncmp( (char *)&ref[0], "refs/heads/", 11 ) )
    {
      b = (const char *)&ref[11];
      sprintf( (char *)&branch[0], "--branch %s -- ", b );
    }

    if( b && !strcmp( b, ctx.repo.trunk ) )
    {
      branch[0] = '\0';
    }
  }

  strbuf_addf( sb, "              <div class=\"clone-box\">\n" );
  strbuf_addf( sb, "                <div class=\"clone-header\">Clone</div>\n" );
  strbuf_addf( sb, "                <div class=\"clone-urls\">\n" );
  strbuf_addf( sb, "                  <div class=\"clone-line\">\n" );
  strbuf_addf( sb, "                    <div class=\"clone-perms\">ro:</div>\n" );

  strbuf_addf( sb, "                    <div class=\"clone-url\">git clone %s%s/%s</div>\n", branch, ctx.repo.clone_ro_prefix, ctx.repo.name );

  strbuf_addf( sb, "                  </div>\n" );
  if( ctx.repo.clone_prefix && *ctx.repo.clone_prefix )
  {
    strbuf_addf( sb, "                  <div class=\"clone-line\">\n" );
    strbuf_addf( sb, "                    <div class=\"clone-perms\">rw:</div>\n" );

    strbuf_addf( sb, "                    <div class=\"clone-url\">git clone %s%s/%s</div>\n", branch, ctx.repo.clone_prefix, ctx.repo.name );

    strbuf_addf( sb, "                  </div>\n" );
  }
  strbuf_addf( sb, "                </div>\n" );
  strbuf_addf( sb, "              </div> <!-- End of Clone -->\n\n" );
}

void cgit_print_tree_page( void )
{
  FILE  *fp;
  struct strbuf buf = STRBUF_INIT;

  fp = xfopen( ctx.page.header, "r" );
  (void)strbuf_env_fread( &buf, fp );
  fclose( fp );

  strbuf_addf( &buf, "        <div class=\"content segment\">\n" );
  strbuf_addf( &buf, "          <div class=\"container\">\n" );
  strbuf_addf( &buf, "            <div class=\"cgit-main-content\">\n" );

  if( ctx.repo.relative_info.kind == GIT_OBJECT_TREE )
  {
    if( ctx.repo.name )
    {
      cgit_print_summary( &buf, ctx.repo.relative_path, (!strcmp( ctx.query.rev, "0" )) ? (const char *)&ctx.repo.relative_info.revision[0] : ctx.query.rev );
      cgit_print_clone_urls( &buf, ctx.repo.relative_path );
    }
    else
    {
      strbuf_addf( &buf, "              <h1>Requested resource cannot be shown</h1>\n" );
      strbuf_addf( &buf, "              <p class='leading'>Repository '%s' not found.</p>\n", ctx.repo.name );
    }
  }
  else
  {
    strbuf_addf( &buf, "              <h1>Requested resource cannot be shown</h1>\n" );
    strbuf_addf( &buf, "              <p class='leading'>This page assume the repository tree to be shown.</p>\n" );
  }

  strbuf_addf( &buf, "            </div> <!-- End of cgit-main-content -->\n" );
  strbuf_addf( &buf, "          </div> <!-- End of container -->\n" );
  strbuf_addf( &buf, "        </div> <!-- End of content segment -->\n" );

  fp = xfopen( ctx.page.footer, "r" );
  (void)strbuf_env_fread( &buf, fp );
  fclose( fp );

  ctx.page.size = buf.len;
  cgit_print_http_headers();
  strbuf_write( &buf, STDOUT_FILENO );
  strbuf_release( &buf );
}