OpenSystemsDevelopment / qpdf

Commit a318b203bea956dbe17c30f87c0a8a5293f027f2

Authored by m-holger
1 parent dc5c8b82

Refactor FileInputSource::seek and FileInputSource::unreadCh 

Avoid building error message each call "just in case".
Inline Side-by-side
Showing 1 changed file with 9 additions and 8 deletions
libqpdf/FileInputSource.cc
  View file @a318b20
... ... @@ -102,11 +102,12 @@ FileInputSource::tell()
102 102 void
103 103 FileInputSource::seek(qpdf_offset_t offset, int whence)
104 104 {
105   - QUtil::os_wrapper(
106   - (std::string("seek to ") + this->filename + ", offset " +
107   - QUtil::int_to_string(offset) + " (" + QUtil::int_to_string(whence) +
108   - ")"),
109   - QUtil::seek(this->file, offset, whence));
  105 + if (QUtil::seek(this->file, offset, whence) == -1) {
  106 + QUtil::throw_system_error(
  107 + std::string("seek to ") + this->filename + ", offset " +
  108 + QUtil::int_to_string(offset) + " (" + QUtil::int_to_string(whence) +
  109 + ")");
  110 + }
110 111 }
111 112  
112 113 void
... ... @@ -140,7 +141,7 @@ FileInputSource::read(char* buffer, size_t length)
140 141 void
141 142 FileInputSource::unreadCh(char ch)
142 143 {
143   - QUtil::os_wrapper(
144   - this->filename + ": unread character",
145   - ungetc(static_cast<unsigned char>(ch), this->file));
  144 + if (ungetc(static_cast<unsigned char>(ch), this->file) == -1) {
  145 + QUtil::throw_system_error(this->filename + ": unread character");
  146 + }
146 147 }
... ...