ui-tree.c

   1 /* ui-tree.c: functions for tree output
   2  *
   3  * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   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 "ui-tree.h"
  12 #include "html.h"
  13 #include "ui-shared.h"
  14
  15 struct walk_tree_context {
  16         char *curr_rev;
  17         char *match_path;
  18         int state;
  19 };
  20
  21 static void print_text_buffer(const char *name, char *buf, unsigned long size)
  22 {
  23         unsigned long lineno, idx;
  24         const char *numberfmt = "<a id='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("Bad object name: %s", sha1_to_hex(sha1));
  98                 return;
  99         }
 100
 101         buf = read_sha1_file(sha1, &type, &size);
 102         if (!buf) {
 103                 cgit_print_error("Error reading object %s", sha1_to_hex(sha1));
 104                 return;
 105         }
 106
 107         htmlf("blob: %s (", sha1_to_hex(sha1));
 108         cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
 109                         rev, path);
 110         html(")\n");
 111
 112         if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
 113                 htmlf("<div class='error'>blob size (%ldKB) exceeds display size limit (%dKB).</div>",
 114                                 size / 1024, ctx.cfg.max_blob_size);
 115                 return;
 116         }
 117
 118         if (buffer_is_binary(buf, size))
 119                 print_binary_buffer(buf, size);
 120         else
 121                 print_text_buffer(basename, buf, size);
 122 }
 123
 124
 125 static int ls_item(const unsigned char *sha1, const char *base, int baselen,
 126                    const char *pathname, unsigned int mode, int stage,
 127                    void *cbdata)
 128 {
 129         struct walk_tree_context *walk_tree_ctx = cbdata;
 130         char *name;
 131         struct strbuf fullpath = STRBUF_INIT;
 132         struct strbuf class = STRBUF_INIT;
 133         enum object_type type;
 134         unsigned long size = 0;
 135
 136         name = xstrdup(pathname);
 137         strbuf_addf(&fullpath, "%s%s%s", ctx.qry.path ? ctx.qry.path : "",
 138                     ctx.qry.path ? "/" : "", name);
 139
 140         if (!S_ISGITLINK(mode)) {
 141                 type = sha1_object_info(sha1, &size);
 142                 if (type == OBJ_BAD) {
 143                         htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
 144                               name,
 145                               sha1_to_hex(sha1));
 146                         return 0;
 147                 }
 148         }
 149
 150         html("<tr><td class='ls-mode'>");
 151         cgit_print_filemode(mode);
 152         html("</td><td>");
 153         if (S_ISGITLINK(mode)) {
 154                 cgit_submodule_link("ls-mod", fullpath.buf, sha1_to_hex(sha1));
 155         } else if (S_ISDIR(mode)) {
 156                 cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head,
 157                                walk_tree_ctx->curr_rev, fullpath.buf);
 158         } else {
 159                 char *ext = strrchr(name, '.');
 160                 strbuf_addstr(&class, "ls-blob");
 161                 if (ext)
 162                         strbuf_addf(&class, " %s", ext + 1);
 163                 cgit_tree_link(name, NULL, class.buf, ctx.qry.head,
 164                                walk_tree_ctx->curr_rev, fullpath.buf);
 165         }
 166         htmlf("</td><td class='ls-size'>%li</td>", size);
 167
 168         html("<td>");
 169         cgit_log_link("log", NULL, "button", ctx.qry.head,
 170                       walk_tree_ctx->curr_rev, fullpath.buf, 0, NULL, NULL,
 171                       ctx.qry.showmsg);
 172         if (ctx.repo->max_stats)
 173                 cgit_stats_link("stats", NULL, "button", ctx.qry.head,
 174                                 fullpath.buf);
 175         if (!S_ISGITLINK(mode))
 176                 cgit_plain_link("plain", NULL, "button", ctx.qry.head,
 177                                 walk_tree_ctx->curr_rev, fullpath.buf);
 178         html("</td></tr>\n");
 179         free(name);
 180         strbuf_release(&fullpath);
 181         strbuf_release(&class);
 182         return 0;
 183 }
 184
 185 static void ls_head()
 186 {
 187         html("<table summary='tree listing' class='list'>\n");
 188         html("<tr class='nohover'>");
 189         html("<th class='left'>Mode</th>");
 190         html("<th class='left'>Name</th>");
 191         html("<th class='right'>Size</th>");
 192         html("<th/>");
 193         html("</tr>\n");
 194 }
 195
 196 static void ls_tail()
 197 {
 198         html("</table>\n");
 199 }
 200
 201 static void ls_tree(const unsigned char *sha1, char *path, struct walk_tree_context *walk_tree_ctx)
 202 {
 203         struct tree *tree;
 204         struct pathspec paths = {
 205                 .nr = 0
 206         };
 207
 208         tree = parse_tree_indirect(sha1);
 209         if (!tree) {
 210                 cgit_print_error("Not a tree object: %s", sha1_to_hex(sha1));
 211                 return;
 212         }
 213
 214         ls_head();
 215         read_tree_recursive(tree, "", 0, 1, &paths, ls_item, walk_tree_ctx);
 216         ls_tail();
 217 }
 218
 219
 220 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 221                      const char *pathname, unsigned mode, int stage,
 222                      void *cbdata)
 223 {
 224         struct walk_tree_context *walk_tree_ctx = cbdata;
 225         static char buffer[PATH_MAX];
 226
 227         if (walk_tree_ctx->state == 0) {
 228                 memcpy(buffer, base, baselen);
 229                 strcpy(buffer + baselen, pathname);
 230                 if (strcmp(walk_tree_ctx->match_path, buffer))
 231                         return READ_TREE_RECURSIVE;
 232
 233                 if (S_ISDIR(mode)) {
 234                         walk_tree_ctx->state = 1;
 235                         ls_head();
 236                         return READ_TREE_RECURSIVE;
 237                 } else {
 238                         print_object(sha1, buffer, pathname, walk_tree_ctx->curr_rev);
 239                         return 0;
 240                 }
 241         }
 242         ls_item(sha1, base, baselen, pathname, mode, stage, walk_tree_ctx);
 243         return 0;
 244 }
 245
 246
 247 /*
 248  * Show a tree or a blob
 249  *   rev:  the commit pointing at the root tree object
 250  *   path: path to tree or blob
 251  */
 252 void cgit_print_tree(const char *rev, char *path)
 253 {
 254         unsigned char sha1[20];
 255         struct commit *commit;
 256         struct pathspec_item path_items = {
 257                 .match = path,
 258                 .len = path ? strlen(path) : 0
 259         };
 260         struct pathspec paths = {
 261                 .nr = path ? 1 : 0,
 262                 .items = &path_items
 263         };
 264         struct walk_tree_context walk_tree_ctx = {
 265                 .match_path = path,
 266                 .state = 0
 267         };
 268
 269         if (!rev)
 270                 rev = ctx.qry.head;
 271
 272         if (get_sha1(rev, sha1)) {
 273                 cgit_print_error("Invalid revision name: %s", rev);
 274                 return;
 275         }
 276         commit = lookup_commit_reference(sha1);
 277         if (!commit || parse_commit(commit)) {
 278                 cgit_print_error("Invalid commit reference: %s", rev);
 279                 return;
 280         }
 281
 282         walk_tree_ctx.curr_rev = xstrdup(rev);
 283
 284         if (path == NULL) {
 285                 ls_tree(commit->tree->object.sha1, NULL, &walk_tree_ctx);
 286                 goto cleanup;
 287         }
 288
 289         read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
 290         if (walk_tree_ctx.state == 1)
 291                 ls_tail();
 292
 293 cleanup:
 294         free(walk_tree_ctx.curr_rev);
 295 }