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                 char *filter_arg = xstrdup(name);
  49                 html("<td class='lines'><pre><code>");
  50                 cgit_open_filter(ctx.repo->source_filter, filter_arg);
  51                 html_raw(buf, size);
  52                 cgit_close_filter(ctx.repo->source_filter);
  53                 free(filter_arg);
  54                 html("</code></pre></td></tr></table>\n");
  55                 return;
  56         }
  57
  58         html("<td class='lines'><pre><code>");
  59         html_txt(buf);
  60         html("</code></pre></td></tr></table>\n");
  61 }
  62
  63 #define ROWLEN 32
  64
  65 static void print_binary_buffer(char *buf, unsigned long size)
  66 {
  67         unsigned long ofs, idx;
  68         static char ascii[ROWLEN + 1];
  69
  70         html("<table summary='blob content' class='bin-blob'>\n");
  71         html("<tr><th>ofs</th><th>hex dump</th><th>ascii</th></tr>");
  72         for (ofs = 0; ofs < size; ofs += ROWLEN, buf += ROWLEN) {
  73                 htmlf("<tr><td class='right'>%04lx</td><td class='hex'>", ofs);
  74                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
  75                         htmlf("%*s%02x",
  76                               idx == 16 ? 4 : 1, "",
  77                               buf[idx] & 0xff);
  78                 html(" </td><td class='hex'>");
  79                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
  80                         ascii[idx] = isgraph(buf[idx]) ? buf[idx] : '.';
  81                 ascii[idx] = '\0';
  82                 html_txt(ascii);
  83                 html("</td></tr>\n");
  84         }
  85         html("</table>\n");
  86 }
  87
  88 static void print_object(const unsigned char *sha1, char *path, const char *basename, const char *rev)
  89 {
  90         enum object_type type;
  91         char *buf;
  92         unsigned long size;
  93
  94         type = sha1_object_info(sha1, &size);
  95         if (type == OBJ_BAD) {
  96                 cgit_print_error("Bad object name: %s", sha1_to_hex(sha1));
  97                 return;
  98         }
  99
 100         buf = read_sha1_file(sha1, &type, &size);
 101         if (!buf) {
 102                 cgit_print_error("Error reading object %s", sha1_to_hex(sha1));
 103                 return;
 104         }
 105
 106         htmlf("blob: %s (", sha1_to_hex(sha1));
 107         cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
 108                         rev, path);
 109         html(")\n");
 110
 111         if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
 112                 htmlf("<div class='error'>blob size (%ldKB) exceeds display size limit (%dKB).</div>",
 113                                 size / 1024, ctx.cfg.max_blob_size);
 114                 return;
 115         }
 116
 117         if (buffer_is_binary(buf, size))
 118                 print_binary_buffer(buf, size);
 119         else
 120                 print_text_buffer(basename, buf, size);
 121 }
 122
 123
 124 static int ls_item(const unsigned char *sha1, struct strbuf *base,
 125                 const char *pathname, unsigned mode, int stage, void *cbdata)
 126 {
 127         struct walk_tree_context *walk_tree_ctx = cbdata;
 128         char *name;
 129         struct strbuf fullpath = STRBUF_INIT;
 130         struct strbuf class = STRBUF_INIT;
 131         enum object_type type;
 132         unsigned long size = 0;
 133
 134         name = xstrdup(pathname);
 135         strbuf_addf(&fullpath, "%s%s%s", ctx.qry.path ? ctx.qry.path : "",
 136                     ctx.qry.path ? "/" : "", name);
 137
 138         if (!S_ISGITLINK(mode)) {
 139                 type = sha1_object_info(sha1, &size);
 140                 if (type == OBJ_BAD) {
 141                         htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
 142                               name,
 143                               sha1_to_hex(sha1));
 144                         return 0;
 145                 }
 146         }
 147
 148         html("<tr><td class='ls-mode'>");
 149         cgit_print_filemode(mode);
 150         html("</td><td>");
 151         if (S_ISGITLINK(mode)) {
 152                 cgit_submodule_link("ls-mod", fullpath.buf, sha1_to_hex(sha1));
 153         } else if (S_ISDIR(mode)) {
 154                 cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head,
 155                                walk_tree_ctx->curr_rev, fullpath.buf);
 156         } else {
 157                 char *ext = strrchr(name, '.');
 158                 strbuf_addstr(&class, "ls-blob");
 159                 if (ext)
 160                         strbuf_addf(&class, " %s", ext + 1);
 161                 cgit_tree_link(name, NULL, class.buf, ctx.qry.head,
 162                                walk_tree_ctx->curr_rev, fullpath.buf);
 163         }
 164         htmlf("</td><td class='ls-size'>%li</td>", size);
 165
 166         html("<td>");
 167         cgit_log_link("log", NULL, "button", ctx.qry.head,
 168                       walk_tree_ctx->curr_rev, fullpath.buf, 0, NULL, NULL,
 169                       ctx.qry.showmsg);
 170         if (ctx.repo->max_stats)
 171                 cgit_stats_link("stats", NULL, "button", ctx.qry.head,
 172                                 fullpath.buf);
 173         if (!S_ISGITLINK(mode))
 174                 cgit_plain_link("plain", NULL, "button", ctx.qry.head,
 175                                 walk_tree_ctx->curr_rev, fullpath.buf);
 176         html("</td></tr>\n");
 177         free(name);
 178         strbuf_release(&fullpath);
 179         strbuf_release(&class);
 180         return 0;
 181 }
 182
 183 static void ls_head(void)
 184 {
 185         html("<table summary='tree listing' class='list'>\n");
 186         html("<tr class='nohover'>");
 187         html("<th class='left'>Mode</th>");
 188         html("<th class='left'>Name</th>");
 189         html("<th class='right'>Size</th>");
 190         html("<th/>");
 191         html("</tr>\n");
 192 }
 193
 194 static void ls_tail(void)
 195 {
 196         html("</table>\n");
 197 }
 198
 199 static void ls_tree(const unsigned char *sha1, char *path, struct walk_tree_context *walk_tree_ctx)
 200 {
 201         struct tree *tree;
 202         struct pathspec paths = {
 203                 .nr = 0
 204         };
 205
 206         tree = parse_tree_indirect(sha1);
 207         if (!tree) {
 208                 cgit_print_error("Not a tree object: %s", sha1_to_hex(sha1));
 209                 return;
 210         }
 211
 212         ls_head();
 213         read_tree_recursive(tree, "", 0, 1, &paths, ls_item, walk_tree_ctx);
 214         ls_tail();
 215 }
 216
 217
 218 static int walk_tree(const unsigned char *sha1, struct strbuf *base,
 219                 const char *pathname, unsigned mode, int stage, void *cbdata)
 220 {
 221         struct walk_tree_context *walk_tree_ctx = cbdata;
 222         static char buffer[PATH_MAX];
 223
 224         if (walk_tree_ctx->state == 0) {
 225                 memcpy(buffer, base->buf, base->len);
 226                 strcpy(buffer + base->len, pathname);
 227                 if (strcmp(walk_tree_ctx->match_path, buffer))
 228                         return READ_TREE_RECURSIVE;
 229
 230                 if (S_ISDIR(mode)) {
 231                         walk_tree_ctx->state = 1;
 232                         ls_head();
 233                         return READ_TREE_RECURSIVE;
 234                 } else {
 235                         print_object(sha1, buffer, pathname, walk_tree_ctx->curr_rev);
 236                         return 0;
 237                 }
 238         }
 239         ls_item(sha1, base, pathname, mode, stage, walk_tree_ctx);
 240         return 0;
 241 }
 242
 243 /*
 244  * Show a tree or a blob
 245  *   rev:  the commit pointing at the root tree object
 246  *   path: path to tree or blob
 247  */
 248 void cgit_print_tree(const char *rev, char *path)
 249 {
 250         unsigned char sha1[20];
 251         struct commit *commit;
 252         struct pathspec_item path_items = {
 253                 .match = path,
 254                 .len = path ? strlen(path) : 0
 255         };
 256         struct pathspec paths = {
 257                 .nr = path ? 1 : 0,
 258                 .items = &path_items
 259         };
 260         struct walk_tree_context walk_tree_ctx = {
 261                 .match_path = path,
 262                 .state = 0
 263         };
 264
 265         if (!rev)
 266                 rev = ctx.qry.head;
 267
 268         if (get_sha1(rev, sha1)) {
 269                 cgit_print_error("Invalid revision name: %s", rev);
 270                 return;
 271         }
 272         commit = lookup_commit_reference(sha1);
 273         if (!commit || parse_commit(commit)) {
 274                 cgit_print_error("Invalid commit reference: %s", rev);
 275                 return;
 276         }
 277
 278         walk_tree_ctx.curr_rev = xstrdup(rev);
 279
 280         if (path == NULL) {
 281                 ls_tree(commit->tree->object.sha1, NULL, &walk_tree_ctx);
 282                 goto cleanup;
 283         }
 284
 285         read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
 286         if (walk_tree_ctx.state == 1)
 287                 ls_tail();
 288
 289 cleanup:
 290         free(walk_tree_ctx.curr_rev);
 291 }