ui-blob.c

   1 /* ui-blob.c: show blob content
   2  *
   3  * Copyright (C) 2008 Lars Hjemli
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10 #include "html.h"
  11 #include "ui-shared.h"
  12
  13 static char *match_path;
  14 static unsigned char *matched_sha1;
  15
  16 static int walk_tree(const unsigned char *sha1, const char *base,int baselen,
  17         const char *pathname, unsigned mode, int stage, void *cbdata) {
  18         if(strncmp(base,match_path,baselen)
  19                 || strcmp(match_path+baselen,pathname) )
  20                 return READ_TREE_RECURSIVE;
  21         memmove(matched_sha1,sha1,20);
  22         return 0;
  23 }
  24
  25 void cgit_print_blob(const char *hex, char *path, const char *head)
  26 {
  27
  28         unsigned char sha1[20];
  29         enum object_type type;
  30         char *buf;
  31         unsigned long size;
  32         struct commit *commit;
  33         const char *paths[] = {path, NULL};
  34
  35         if (hex) {
  36                 if (get_sha1_hex(hex, sha1)){
  37                         cgit_print_error(fmt("Bad hex value: %s", hex));
  38                         return;
  39                 }
  40         } else {
  41                 if (get_sha1(head,sha1)) {
  42                         cgit_print_error(fmt("Bad ref: %s", head));
  43                         return;
  44                 }
  45         }
  46
  47         type = sha1_object_info(sha1, &size);
  48
  49         if((!hex) && type == OBJ_COMMIT && path) {
  50                 commit = lookup_commit_reference(sha1);
  51                 match_path = path;
  52                 matched_sha1 = sha1;
  53                 read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree, NULL);
  54                 type = sha1_object_info(sha1,&size);
  55         }
  56
  57         if (type == OBJ_BAD) {
  58                 cgit_print_error(fmt("Bad object name: %s", hex));
  59                 return;
  60         }
  61
  62         buf = read_sha1_file(sha1, &type, &size);
  63         if (!buf) {
  64                 cgit_print_error(fmt("Error reading object %s", hex));
  65                 return;
  66         }
  67
  68         buf[size] = '\0';
  69         ctx.page.mimetype = ctx.qry.mimetype;
  70         if (!ctx.page.mimetype) {
  71                 if (buffer_is_binary(buf, size))
  72                         ctx.page.mimetype = "application/octet-stream";
  73                 else
  74                         ctx.page.mimetype = "text/plain";
  75         }
  76         ctx.page.filename = path;
  77         cgit_print_http_headers(&ctx);
  78         write(htmlfd, buf, size);
  79 }