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 "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 =
  25                 "<a class='no' id='n%1$d' name='n%1$d' href='#n%1$d'>%1$d</a>\n";
  26
  27         html("<table summary='blob content' class='blob'>\n");
  28
  29         if (ctx.cfg.enable_tree_linenumbers) {
  30                 html("<tr><td class='linenumbers'><pre>");
  31                 idx = 0;
  32                 lineno = 0;
  33
  34                 if (size) {
  35                         htmlf(numberfmt, ++lineno);
  36                         while (idx < size - 1) { // skip absolute last newline
  37                                 if (buf[idx] == '\n')
  38                                         htmlf(numberfmt, ++lineno);
  39                                 idx++;
  40                         }
  41                 }
  42                 html("</pre></td>\n");
  43         }
  44         else {
  45                 html("<tr>\n");
  46         }
  47
  48         if (ctx.repo->source_filter) {
  49                 html("<td class='lines'><pre><code>");
  50                 ctx.repo->source_filter->argv[1] = xstrdup(name);
  51                 cgit_open_filter(ctx.repo->source_filter);
  52                 html_raw(buf, size);
  53                 cgit_close_filter(ctx.repo->source_filter);
  54                 free(ctx.repo->source_filter->argv[1]);
  55                 ctx.repo->source_filter->argv[1] = NULL;
  56                 html("</code></pre></td></tr></table>\n");
  57                 return;
  58         }
  59
  60         html("<td class='lines'><pre><code>");
  61         html_txt(buf);
  62         html("</code></pre></td></tr></table>\n");
  63 }
  64
  65 #define ROWLEN 32
  66
  67 static void print_binary_buffer(char *buf, unsigned long size)
  68 {
  69         unsigned long ofs, idx;
  70         static char ascii[ROWLEN + 1];
  71
  72         html("<table summary='blob content' class='bin-blob'>\n");
  73         html("<tr><th>ofs</th><th>hex dump</th><th>ascii</th></tr>");
  74         for (ofs = 0; ofs < size; ofs += ROWLEN, buf += ROWLEN) {
  75                 htmlf("<tr><td class='right'>%04lx</td><td class='hex'>", ofs);
  76                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
  77                         htmlf("%*s%02x",
  78                               idx == 16 ? 4 : 1, "",
  79                               buf[idx] & 0xff);
  80                 html(" </td><td class='hex'>");
  81                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
  82                         ascii[idx] = isgraph(buf[idx]) ? buf[idx] : '.';
  83                 ascii[idx] = '\0';
  84                 html_txt(ascii);
  85                 html("</td></tr>\n");
  86         }
  87         html("</table>\n");
  88 }
  89
  90 static void print_object(const unsigned char *sha1, char *path, const char *basename, const char *rev)
  91 {
  92         enum object_type type;
  93         char *buf;
  94         unsigned long size;
  95
  96         type = sha1_object_info(sha1, &size);
  97         if (type == OBJ_BAD) {
  98                 cgit_print_error("Bad object name: %s", sha1_to_hex(sha1));
  99                 return;
 100         }
 101
 102         buf = read_sha1_file(sha1, &type, &size);
 103         if (!buf) {
 104                 cgit_print_error("Error reading object %s", sha1_to_hex(sha1));
 105                 return;
 106         }
 107
 108         htmlf("blob: %s (", sha1_to_hex(sha1));
 109         cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
 110                         rev, path);
 111         html(")\n");
 112
 113         if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
 114                 htmlf("<div class='error'>blob size (%ldKB) exceeds display size limit (%dKB).</div>",
 115                                 size / 1024, ctx.cfg.max_blob_size);
 116                 return;
 117         }
 118
 119         if (buffer_is_binary(buf, size))
 120                 print_binary_buffer(buf, size);
 121         else
 122                 print_text_buffer(basename, buf, size);
 123 }
 124
 125
 126 static int ls_item(const unsigned char *sha1, const char *base, int baselen,
 127                    const char *pathname, unsigned int mode, int stage,
 128                    void *cbdata)
 129 {
 130         struct walk_tree_context *walk_tree_ctx = cbdata;
 131         char *name;
 132         struct strbuf fullpath = STRBUF_INIT;
 133         struct strbuf class = STRBUF_INIT;
 134         enum object_type type;
 135         unsigned long size = 0;
 136
 137         name = xstrdup(pathname);
 138         strbuf_addf(&fullpath, "%s%s%s", ctx.qry.path ? ctx.qry.path : "",
 139                     ctx.qry.path ? "/" : "", name);
 140
 141         if (!S_ISGITLINK(mode)) {
 142                 type = sha1_object_info(sha1, &size);
 143                 if (type == OBJ_BAD) {
 144                         htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
 145                               name,
 146                               sha1_to_hex(sha1));
 147                         return 0;
 148                 }
 149         }
 150
 151         html("<tr><td class='ls-mode'>");
 152         cgit_print_filemode(mode);
 153         html("</td><td>");
 154         if (S_ISGITLINK(mode)) {
 155                 cgit_submodule_link("ls-mod", fullpath.buf, sha1_to_hex(sha1));
 156         } else if (S_ISDIR(mode)) {
 157                 cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head,
 158                                walk_tree_ctx->curr_rev, fullpath.buf);
 159         } else {
 160                 char *ext = strrchr(name, '.');
 161                 strbuf_addstr(&class, "ls-blob");
 162                 if (ext)
 163                         strbuf_addf(&class, " %s", ext + 1);
 164                 cgit_tree_link(name, NULL, class.buf, ctx.qry.head,
 165                                walk_tree_ctx->curr_rev, fullpath.buf);
 166         }
 167         htmlf("</td><td class='ls-size'>%li</td>", size);
 168
 169         html("<td>");
 170         cgit_log_link("log", NULL, "button", ctx.qry.head,
 171                       walk_tree_ctx->curr_rev, fullpath.buf, 0, NULL, NULL,
 172                       ctx.qry.showmsg);
 173         if (ctx.repo->max_stats)
 174                 cgit_stats_link("stats", NULL, "button", ctx.qry.head,
 175                                 fullpath.buf);
 176         if (!S_ISGITLINK(mode))
 177                 cgit_plain_link("plain", NULL, "button", ctx.qry.head,
 178                                 walk_tree_ctx->curr_rev, fullpath.buf);
 179         html("</td></tr>\n");
 180         free(name);
 181         strbuf_release(&fullpath);
 182         strbuf_release(&class);
 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("Not a tree object: %s", sha1_to_hex(sha1));
 212                 return;
 213         }
 214
 215         ls_head();
 216         read_tree_recursive(tree, "", 0, 1, &paths, ls_item, walk_tree_ctx);
 217         ls_tail();
 218 }
 219
 220
 221 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 222                      const char *pathname, unsigned mode, int stage,
 223                      void *cbdata)
 224 {
 225         struct walk_tree_context *walk_tree_ctx = cbdata;
 226         static char buffer[PATH_MAX];
 227
 228         if (walk_tree_ctx->state == 0) {
 229                 memcpy(buffer, base, baselen);
 230                 strcpy(buffer + baselen, pathname);
 231                 if (strcmp(walk_tree_ctx->match_path, buffer))
 232                         return READ_TREE_RECURSIVE;
 233
 234                 if (S_ISDIR(mode)) {
 235                         walk_tree_ctx->state = 1;
 236                         ls_head();
 237                         return READ_TREE_RECURSIVE;
 238                 } else {
 239                         print_object(sha1, buffer, pathname, walk_tree_ctx->curr_rev);
 240                         return 0;
 241                 }
 242         }
 243         ls_item(sha1, base, baselen, pathname, mode, stage, walk_tree_ctx);
 244         return 0;
 245 }
 246
 247
 248 /*
 249  * Show a tree or a blob
 250  *   rev:  the commit pointing at the root tree object
 251  *   path: path to tree or blob
 252  */
 253 void cgit_print_tree(const char *rev, char *path)
 254 {
 255         unsigned char sha1[20];
 256         struct commit *commit;
 257         struct pathspec_item path_items = {
 258                 .match = path,
 259                 .len = path ? strlen(path) : 0
 260         };
 261         struct pathspec paths = {
 262                 .nr = path ? 1 : 0,
 263                 .items = &path_items
 264         };
 265         struct walk_tree_context walk_tree_ctx = {
 266                 .match_path = path,
 267                 .state = 0
 268         };
 269
 270         if (!rev)
 271                 rev = ctx.qry.head;
 272
 273         if (get_sha1(rev, sha1)) {
 274                 cgit_print_error("Invalid revision name: %s", rev);
 275                 return;
 276         }
 277         commit = lookup_commit_reference(sha1);
 278         if (!commit || parse_commit(commit)) {
 279                 cgit_print_error("Invalid commit reference: %s", rev);
 280                 return;
 281         }
 282
 283         walk_tree_ctx.curr_rev = xstrdup(rev);
 284
 285         if (path == NULL) {
 286                 ls_tree(commit->tree->object.sha1, NULL, &walk_tree_ctx);
 287                 goto cleanup;
 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
 294 cleanup:
 295         free(walk_tree_ctx.curr_rev);
 296 }