ui-tree.c

   1 /* ui-tree.c: functions for tree output
   2  *
   3  * Copyright (C) 2006 Lars Hjemli
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include <ctype.h>
  10 #include "cgit.h"
  11 #include "html.h"
  12 #include "ui-shared.h"
  13
  14 struct walk_tree_context {
  15         char *curr_rev;
  16         char *match_path;
  17         int state;
  18 };
  19
  20 static void print_text_buffer(const char *name, char *buf, unsigned long size)
  21 {
  22         unsigned long lineno, idx;
  23         const char *numberfmt =
  24                 "<a class='no' id='n%1$d' name='n%1$d' href='#n%1$d'>%1$d</a>\n";
  25
  26         html("<table summary='blob content' class='blob'>\n");
  27
  28         if (ctx.cfg.enable_tree_linenumbers) {
  29                 html("<tr><td class='linenumbers'><pre>");
  30                 idx = 0;
  31                 lineno = 0;
  32
  33                 if (size) {
  34                         htmlf(numberfmt, ++lineno);
  35                         while (idx < size - 1) { // skip absolute last newline
  36                                 if (buf[idx] == '\n')
  37                                         htmlf(numberfmt, ++lineno);
  38                                 idx++;
  39                         }
  40                 }
  41                 html("</pre></td>\n");
  42         }
  43         else {
  44                 html("<tr>\n");
  45         }
  46
  47         if (ctx.repo->source_filter) {
  48                 html("<td class='lines'><pre><code>");
  49                 ctx.repo->source_filter->argv[1] = xstrdup(name);
  50                 cgit_open_filter(ctx.repo->source_filter);
  51                 html_raw(buf, size);
  52                 cgit_close_filter(ctx.repo->source_filter);
  53                 free(ctx.repo->source_filter->argv[1]);
  54                 ctx.repo->source_filter->argv[1] = NULL;
  55                 html("</code></pre></td></tr></table>\n");
  56                 return;
  57         }
  58
  59         html("<td class='lines'><pre><code>");
  60         html_txt(buf);
  61         html("</code></pre></td></tr></table>\n");
  62 }
  63
  64 #define ROWLEN 32
  65
  66 static void print_binary_buffer(char *buf, unsigned long size)
  67 {
  68         unsigned long ofs, idx;
  69         static char ascii[ROWLEN + 1];
  70
  71         html("<table summary='blob content' class='bin-blob'>\n");
  72         html("<tr><th>ofs</th><th>hex dump</th><th>ascii</th></tr>");
  73         for (ofs = 0; ofs < size; ofs += ROWLEN, buf += ROWLEN) {
  74                 htmlf("<tr><td class='right'>%04lx</td><td class='hex'>", ofs);
  75                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
  76                         htmlf("%*s%02x",
  77                               idx == 16 ? 4 : 1, "",
  78                               buf[idx] & 0xff);
  79                 html(" </td><td class='hex'>");
  80                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
  81                         ascii[idx] = isgraph(buf[idx]) ? buf[idx] : '.';
  82                 ascii[idx] = '\0';
  83                 html_txt(ascii);
  84                 html("</td></tr>\n");
  85         }
  86         html("</table>\n");
  87 }
  88
  89 static void print_object(const unsigned char *sha1, char *path, const char *basename, const char *rev)
  90 {
  91         enum object_type type;
  92         char *buf;
  93         unsigned long size;
  94
  95         type = sha1_object_info(sha1, &size);
  96         if (type == OBJ_BAD) {
  97                 cgit_print_error(fmt("Bad object name: %s",
  98                                      sha1_to_hex(sha1)));
  99                 return;
 100         }
 101
 102         buf = read_sha1_file(sha1, &type, &size);
 103         if (!buf) {
 104                 cgit_print_error(fmt("Error reading object %s",
 105                                      sha1_to_hex(sha1)));
 106                 return;
 107         }
 108
 109         htmlf("blob: %s (", sha1_to_hex(sha1));
 110         cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
 111                         rev, path);
 112         html(")\n");
 113
 114         if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
 115                 htmlf("<div class='error'>blob size (%ldKB) exceeds display size limit (%dKB).</div>",
 116                                 size / 1024, ctx.cfg.max_blob_size);
 117                 return;
 118         }
 119
 120         if (buffer_is_binary(buf, size))
 121                 print_binary_buffer(buf, size);
 122         else
 123                 print_text_buffer(basename, buf, size);
 124 }
 125
 126
 127 static int ls_item(const unsigned char *sha1, const char *base, int baselen,
 128                    const char *pathname, unsigned int mode, int stage,
 129                    void *cbdata)
 130 {
 131         struct walk_tree_context *walk_tree_ctx = cbdata;
 132         char *name;
 133         char *fullpath;
 134         char *class;
 135         enum object_type type;
 136         unsigned long size = 0;
 137
 138         name = xstrdup(pathname);
 139         fullpath = fmt("%s%s%s", ctx.qry.path ? ctx.qry.path : "",
 140                        ctx.qry.path ? "/" : "", name);
 141
 142         if (!S_ISGITLINK(mode)) {
 143                 type = sha1_object_info(sha1, &size);
 144                 if (type == OBJ_BAD) {
 145                         htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
 146                               name,
 147                               sha1_to_hex(sha1));
 148                         return 0;
 149                 }
 150         }
 151
 152         html("<tr><td class='ls-mode'>");
 153         cgit_print_filemode(mode);
 154         html("</td><td>");
 155         if (S_ISGITLINK(mode)) {
 156                 cgit_submodule_link("ls-mod", fullpath, sha1_to_hex(sha1));
 157         } else if (S_ISDIR(mode)) {
 158                 cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head,
 159                                walk_tree_ctx->curr_rev, fullpath);
 160         } else {
 161                 class = strrchr(name, '.');
 162                 if (class != NULL) {
 163                         class = fmt("ls-blob %s", class + 1);
 164                 } else
 165                         class = "ls-blob";
 166                 cgit_tree_link(name, NULL, class, ctx.qry.head,
 167                                walk_tree_ctx->curr_rev, fullpath);
 168         }
 169         htmlf("</td><td class='ls-size'>%li</td>", size);
 170
 171         html("<td>");
 172         cgit_log_link("log", NULL, "button", ctx.qry.head,
 173                       walk_tree_ctx->curr_rev, fullpath, 0, NULL, NULL,
 174                       ctx.qry.showmsg);
 175         if (ctx.repo->max_stats)
 176                 cgit_stats_link("stats", NULL, "button", ctx.qry.head,
 177                                 fullpath);
 178         if (!S_ISGITLINK(mode))
 179                 cgit_plain_link("plain", NULL, "button", ctx.qry.head,
 180                                 walk_tree_ctx->curr_rev, fullpath);
 181         html("</td></tr>\n");
 182         free(name);
 183         return 0;
 184 }
 185
 186 static void ls_head()
 187 {
 188         html("<table summary='tree listing' class='list'>\n");
 189         html("<tr class='nohover'>");
 190         html("<th class='left'>Mode</th>");
 191         html("<th class='left'>Name</th>");
 192         html("<th class='right'>Size</th>");
 193         html("<th/>");
 194         html("</tr>\n");
 195 }
 196
 197 static void ls_tail()
 198 {
 199         html("</table>\n");
 200 }
 201
 202 static void ls_tree(const unsigned char *sha1, char *path, struct walk_tree_context *walk_tree_ctx)
 203 {
 204         struct tree *tree;
 205         struct pathspec paths = {
 206                 .nr = 0
 207         };
 208
 209         tree = parse_tree_indirect(sha1);
 210         if (!tree) {
 211                 cgit_print_error(fmt("Not a tree object: %s",
 212                                      sha1_to_hex(sha1)));
 213                 return;
 214         }
 215
 216         ls_head();
 217         read_tree_recursive(tree, "", 0, 1, &paths, ls_item, walk_tree_ctx);
 218         ls_tail();
 219 }
 220
 221
 222 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 223                      const char *pathname, unsigned mode, int stage,
 224                      void *cbdata)
 225 {
 226         struct walk_tree_context *walk_tree_ctx = cbdata;
 227         static char buffer[PATH_MAX];
 228
 229         if (walk_tree_ctx->state == 0) {
 230                 memcpy(buffer, base, baselen);
 231                 strcpy(buffer + baselen, pathname);
 232                 if (strcmp(walk_tree_ctx->match_path, buffer))
 233                         return READ_TREE_RECURSIVE;
 234
 235                 if (S_ISDIR(mode)) {
 236                         walk_tree_ctx->state = 1;
 237                         ls_head();
 238                         return READ_TREE_RECURSIVE;
 239                 } else {
 240                         print_object(sha1, buffer, pathname, walk_tree_ctx->curr_rev);
 241                         return 0;
 242                 }
 243         }
 244         ls_item(sha1, base, baselen, pathname, mode, stage, walk_tree_ctx);
 245         return 0;
 246 }
 247
 248
 249 /*
 250  * Show a tree or a blob
 251  *   rev:  the commit pointing at the root tree object
 252  *   path: path to tree or blob
 253  */
 254 void cgit_print_tree(const char *rev, char *path)
 255 {
 256         unsigned char sha1[20];
 257         struct commit *commit;
 258         struct pathspec_item path_items = {
 259                 .match = path,
 260                 .len = path ? strlen(path) : 0
 261         };
 262         struct pathspec paths = {
 263                 .nr = path ? 1 : 0,
 264                 .items = &path_items
 265         };
 266         struct walk_tree_context walk_tree_ctx = {
 267                 .match_path = path,
 268                 .state = 0
 269         };
 270
 271         if (!rev)
 272                 rev = ctx.qry.head;
 273
 274         walk_tree_ctx.curr_rev = xstrdup(rev);
 275         if (get_sha1(rev, sha1)) {
 276                 cgit_print_error(fmt("Invalid revision name: %s", rev));
 277                 return;
 278         }
 279         commit = lookup_commit_reference(sha1);
 280         if (!commit || parse_commit(commit)) {
 281                 cgit_print_error(fmt("Invalid commit reference: %s", rev));
 282                 return;
 283         }
 284
 285         if (path == NULL) {
 286                 ls_tree(commit->tree->object.sha1, NULL, &walk_tree_ctx);
 287                 return;
 288         }
 289
 290         read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
 291         if (walk_tree_ctx.state == 1)
 292                 ls_tail();
 293 }