src/plugins/litehtml_viewer/litehtml/url_path.cpp

   1 // Copyright (C) 2020-2021 Primate Labs Inc.
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  29
  30 #include "url_path.h"
  31
  32 namespace litehtml {
  33
  34 bool is_url_path_absolute(const string& path)
  35 {
  36     return path.length() > 0 && path[0] == '/';
  37 }
  38
  39 string url_path_directory_name(const string& path)
  40 {
  41     size_t offset = path.find_last_of('/');
  42     if (offset == string::npos) {
  43         return ".";
  44     } else {
  45         return path.substr(0, offset + 1);
  46     }
  47 }
  48
  49 string url_path_base_name(const string& path)
  50 {
  51     size_t offset = path.find_last_of('/');
  52     if (offset == string::npos) {
  53         return path;
  54     } else {
  55         return path.substr(offset + 1);
  56     }
  57 }
  58
  59 string url_path_append(const string& base, const string& path)
  60 {
  61     string result(base);
  62
  63     // Only append a separator if both base and path are not empty and if the
  64     // last character of base is not already a separator.
  65     if (!result.empty() && !path.empty() && result.back() != '/') {
  66         result.append(1, '/');
  67     }
  68
  69     result.append(path);
  70
  71     return result;
  72 }
  73
  74 string url_path_resolve(const string& base, const string& path)
  75 {
  76
  77     // If the possibly relative path is an absolute path then it is not
  78     // relative and the base path is irrelevant.
  79     if (is_url_path_absolute(path)) {
  80         return path;
  81     }
  82
  83     return url_path_append(url_path_directory_name(base), path);
  84 }
  85
  86 } // namespace litehtml